A.53*59 drilling rod adopted,high rigidity and strong delivery torque. the machine is equipped with national patent technology—taper clutch,with charactristics of strong transmission troque,easy operation and free maintenance. B.for the winch,we use large module planetary gear and add supporting frame,greatly increasing hoisting and braking ability of the winch. C.vertical spindle are fixed by 4 groups of bearings to ensure that the rotary machine is rigid enough for gravel layer and other complex geoloical conditions. D.we are the first 1 to equip mud pump with the flow 160L/min in china so that it will save cost and also make the machine compact,moblie and lightweight.
2.HW-230 Water Well Drilling Rig Applications
HW-230 drilling rig is mainly used for geological general investigation and exploration,road and tall buliding foundation exploration,kinds of hole in concrete structure,river levees,subgrade grouting hole drillling and driect grouting,civil wells and earth temperature entral air-conditioner,etc.
Main Technical Parameter
Drilling depth
30-230m
Max open hole caliber
3
HangZhou CZPT Mining Machinery Co., Ltd.
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Stiffness and Torsional Vibration of Spline-Couplings
In this paper, we describe some basic characteristics of spline-coupling and examine its torsional vibration behavior. We also explore the effect of spline misalignment on rotor-spline coupling. These results will assist in the design of improved spline-coupling systems for various applications. The results are presented in Table 1.
Stiffness of spline-coupling
The stiffness of a spline-coupling is a function of the meshing force between the splines in a rotor-spline coupling system and the static vibration displacement. The meshing force depends on the coupling parameters such as the transmitting torque and the spline thickness. It increases nonlinearly with the spline thickness. A simplified spline-coupling model can be used to evaluate the load distribution of splines under vibration and transient loads. The axle spline sleeve is displaced a z-direction and a resistance moment T is applied to the outer face of the sleeve. This simple model can satisfy a wide range of engineering requirements but may suffer from complex loading conditions. Its asymmetric clearance may affect its engagement behavior and stress distribution patterns. The results of the simulations show that the maximum vibration acceleration in both Figures 10 and 22 was 3.03 g/s. This results indicate that a misalignment in the circumferential direction increases the instantaneous impact. Asymmetry in the coupling geometry is also found in the meshing. The right-side spline’s teeth mesh tightly while those on the left side are misaligned. Considering the spline-coupling geometry, a semi-analytical model is used to compute stiffness. This model is a simplified form of a classical spline-coupling model, with submatrices defining the shape and stiffness of the joint. As the design clearance is a known value, the stiffness of a spline-coupling system can be analyzed using the same formula. The results of the simulations also show that the spline-coupling system can be modeled using MASTA, a high-level commercial CAE tool for transmission analysis. In this case, the spline segments were modeled as a series of spline segments with variable stiffness, which was calculated based on the initial gap between spline teeth. Then, the spline segments were modelled as a series of splines of increasing stiffness, accounting for different manufacturing variations. The resulting analysis of the spline-coupling geometry is compared to those of the finite-element approach. Despite the high stiffness of a spline-coupling system, the contact status of the contact surfaces often changes. In addition, spline coupling affects the lateral vibration and deformation of the rotor. However, stiffness nonlinearity is not well studied in splined rotors because of the lack of a fully analytical model.
Characteristics of spline-coupling
The study of spline-coupling involves a number of design factors. These include weight, materials, and performance requirements. Weight is particularly important in the aeronautics field. Weight is often an issue for design engineers because materials have varying dimensional stability, weight, and durability. Additionally, space constraints and other configuration restrictions may require the use of spline-couplings in certain applications. The main parameters to consider for any spline-coupling design are the maximum principal stress, the maldistribution factor, and the maximum tooth-bearing stress. The magnitude of each of these parameters must be smaller than or equal to the external spline diameter, in order to provide stability. The outer diameter of the spline must be at least 4 inches larger than the inner diameter of the spline. Once the physical design is validated, the spline coupling knowledge base is created. This model is pre-programmed and stores the design parameter signals, including performance and manufacturing constraints. It then compares the parameter values to the design rule signals, and constructs a geometric representation of the spline coupling. A visual model is created from the input signals, and can be manipulated by changing different parameters and specifications. The stiffness of a spline joint is another important parameter for determining the spline-coupling stiffness. The stiffness distribution of the spline joint affects the rotor’s lateral vibration and deformation. A finite element method is a useful technique for obtaining lateral stiffness of spline joints. This method involves many mesh refinements and requires a high computational cost. The diameter of the spline-coupling must be large enough to transmit the torque. A spline with a larger diameter may have greater torque-transmitting capacity because it has a smaller circumference. However, the larger diameter of a spline is thinner than the shaft, and the latter may be more suitable if the torque is spread over a greater number of teeth. Spline-couplings are classified according to their tooth profile along the axial and radial directions. The radial and axial tooth profiles affect the component’s behavior and wear damage. Splines with a crowned tooth profile are prone to angular misalignment. Typically, these spline-couplings are oversized to ensure durability and safety.
Stiffness of spline-coupling in torsional vibration analysis
This article presents a general framework for the study of torsional vibration caused by the stiffness of spline-couplings in aero-engines. It is based on a previous study on spline-couplings. It is characterized by the following 3 factors: bending stiffness, total flexibility, and tangential stiffness. The first criterion is the equivalent diameter of external and internal splines. Both the spline-coupling stiffness and the displacement of splines are evaluated by using the derivative of the total flexibility. The stiffness of a spline joint can vary based on the distribution of load along the spline. Variables affecting the stiffness of spline joints include the torque level, tooth indexing errors, and misalignment. To explore the effects of these variables, an analytical formula is developed. The method is applicable for various kinds of spline joints, such as splines with multiple components. Despite the difficulty of calculating spline-coupling stiffness, it is possible to model the contact between the teeth of the shaft and the hub using an analytical approach. This approach helps in determining key magnitudes of coupling operation such as contact peak pressures, reaction moments, and angular momentum. This approach allows for accurate results for spline-couplings and is suitable for both torsional vibration and structural vibration analysis. The stiffness of spline-coupling is commonly assumed to be rigid in dynamic models. However, various dynamic phenomena associated with spline joints must be captured in high-fidelity drivetrain models. To accomplish this, a general analytical stiffness formulation is proposed based on a semi-analytical spline load distribution model. The resulting stiffness matrix contains radial and tilting stiffness values as well as torsional stiffness. The analysis is further simplified with the blockwise inversion method. It is essential to consider the torsional vibration of a power transmission system before selecting the coupling. An accurate analysis of torsional vibration is crucial for coupling safety. This article also discusses case studies of spline shaft wear and torsionally-induced failures. The discussion will conclude with the development of a robust and efficient method to simulate these problems in real-life scenarios.
Effect of spline misalignment on rotor-spline coupling
In this study, the effect of spline misalignment in rotor-spline coupling is investigated. The stability boundary and mechanism of rotor instability are analyzed. We find that the meshing force of a misaligned spline coupling increases nonlinearly with spline thickness. The results demonstrate that the misalignment is responsible for the instability of the rotor-spline coupling system. An intentional spline misalignment is introduced to achieve an interference fit and zero backlash condition. This leads to uneven load distribution among the spline teeth. A further spline misalignment of 50um can result in rotor-spline coupling failure. The maximum tensile root stress shifted to the left under this condition. Positive spline misalignment increases the gear mesh misalignment. Conversely, negative spline misalignment has no effect. The right-handed spline misalignment is opposite to the helix hand. The high contact area is moved from the center to the left side. In both cases, gear mesh is misaligned due to deflection and tilting of the gear under load. This variation of the tooth surface is measured as the change in clearance in the transverse plain. The radial and axial clearance values are the same, while the difference between the 2 is less. In addition to the frictional force, the axial clearance of the splines is the same, which increases the gear mesh misalignment. Hence, the same procedure can be used to determine the frictional force of a rotor-spline coupling. Gear mesh misalignment influences spline-rotor coupling performance. This misalignment changes the distribution of the gear mesh and alters contact and bending stresses. Therefore, it is essential to understand the effects of misalignment in spline couplings. Using a simplified system of helical gear pair, Hong et al. examined the load distribution along the tooth interface of the spline. This misalignment caused the flank contact pattern to change. The misaligned teeth exhibited deflection under load and developed a tilting moment on the gear. The effect of spline misalignment in rotor-spline couplings is minimized by using a mechanism that reduces backlash. The mechanism comprises cooperably splined male and female members. One member is formed by 2 coaxially aligned splined segments with end surfaces shaped to engage in sliding relationship. The connecting device applies axial loads to these segments, causing them to rotate relative to 1 another.
High Quality Portable Water Well Drilling Rigs Machine
Product description: Hydraulic core drilling rig is mainly used for geological general investigation and exploration,kinds of hole in concrete structure,road and tall building foundation exploration,river levees,subgrade grouting hole drilling and direct grouting,civil wells and earth temperature central air conditioner,etc.
Features:
Engine:Feed by hydraulic cylinder,the drilling efficiency is higher and it can save labor.
Drill rod:53×59 drilling rod adopted,high rigidity and strong delivery torque.
Spindle:Vertical spindle are fixed by 4 groups of bearing to ensure that the rotary machine is rigid enough for gravel layer and other complex geoloical conditions.
Mud pump:Equip mud pump with flow 160L/min,save cost and also make the structure compact
Concentrated handle, small footprint,light weight, strong decomposition, easy to move.
Technical parameters:
The whole machine parameters
Model
YG130Y/130YY
YG180YG/180YYG
YG200Y/200YY
Drill hole depth
130m
180m
200m
Maximum opening diameter
Φ75-Φ220mm
Φ75-Φ220mm
Φ75-Φ325mm
Final hole diameter
Φ75mm
Φ75mm
Φ75mm
Take the initiative to drill pipe
53/59*4200mm
53/59*4200mm
53/59*4200mm
Drill pipe diameter
Φ42-60mm
Φ42-60mm
Φ42-60mm
Borehole inclination
90°- 75°
90°- 75°
90°- 75°
Power(diesel engine)
13.2/2200kw/r/min
13.2/2200kw/r/min
15/2200kw/r/min
Size
2.4*0.8*1.4m
2.4*0.8*1.3m
2.7*0.9*1.5
Vertical shaft
Vertical spindle speed
142,285,570r/min
130,480,730,1045r/min
64,28,287,557r/min
Vertical stroke
450mm
450mm
450mm
Hoist
Single rope lift
2000
2100
2500
Single rope winding speed
0.41-1.64m/s
0.35-2.23m/s
0.12-0.95m/s
Drum diameter
Φ140mm
Φ140mm
Φ140mm
Diameter of wire rope
Φ9.3mm
Φ9.3mm
Φ13mm
Wire rope capacity
27m
27m
35m
Rig
Rated load
18t
18t
18t
Effective height
6.5m
6.5m
6.5m
Tower leg specifications
Φ73mm
Φ73mm
Φ89mm
Mud pump
Model
BW95
BW95
BW145
Flow
95L/min
95L/min
145L/min
Maximum pressure
1.2Mpa
1.2Mpa
2Mpa
Reciprocating frequency
93times/min
93times/min
93times/min
Suction pipe diameter
Φ51mm*4.5m
Φ51mm*4.5m
Φ51mm*4.5m
Packing&Delivery:
Company Informations:
Applications of Spline Couplings
A spline coupling is a highly effective means of connecting 2 or more components. These types of couplings are very efficient, as they combine linear motion with rotation, and their efficiency makes them a desirable choice in numerous applications. Read on to learn more about the main characteristics and applications of spline couplings. You will also be able to determine the predicted operation and wear. You can easily design your own couplings by following the steps outlined below.
Optimal design
The spline coupling plays an important role in transmitting torque. It consists of a hub and a shaft with splines that are in surface contact without relative motion. Because they are connected, their angular velocity is the same. The splines can be designed with any profile that minimizes friction. Because they are in contact with each other, the load is not evenly distributed, concentrating on a small area, which can deform the hub surface. Optimal spline coupling design takes into account several factors, including weight, material characteristics, and performance requirements. In the aeronautics industry, weight is an important design factor. S.A.E. and ANSI tables do not account for weight when calculating the performance requirements of spline couplings. Another critical factor is space. Spline couplings may need to fit in tight spaces, or they may be subject to other configuration constraints. Optimal design of spline couplers may be characterized by an odd number of teeth. However, this is not always the case. If the external spline’s outer diameter exceeds a certain threshold, the optimal spline coupling model may not be an optimal choice for this application. To optimize a spline coupling for a specific application, the user may need to consider the sizing method that is most appropriate for their application. Once a design is generated, the next step is to test the resulting spline coupling. The system must check for any design constraints and validate that it can be produced using modern manufacturing techniques. The resulting spline coupling model is then exported to an optimisation tool for further analysis. The method enables a designer to easily manipulate the design of a spline coupling and reduce its weight. The spline coupling model 20 includes the major structural features of a spline coupling. A product model software program 10 stores default values for each of the spline coupling’s specifications. The resulting spline model is then calculated in accordance with the algorithm used in the present invention. The software allows the designer to enter the spline coupling’s radii, thickness, and orientation.
Characteristics
An important aspect of aero-engine splines is the load distribution among the teeth. The researchers have performed experimental tests and have analyzed the effect of lubrication conditions on the coupling behavior. Then, they devised a theoretical model using a Ruiz parameter to simulate the actual working conditions of spline couplings. This model explains the wear damage caused by the spline couplings by considering the influence of friction, misalignment, and other conditions that are relevant to the splines’ performance. In order to design a spline coupling, the user first inputs the design criteria for sizing load carrying sections, including the external spline 40 of the spline coupling model 30. Then, the user specifies torque margin performance requirement specifications, such as the yield limit, plastic buckling, and creep buckling. The software program then automatically calculates the size and configuration of the load carrying sections and the shaft. These specifications are then entered into the model software program 10 as specification values. Various spline coupling configuration specifications are input on the GUI screen 80. The software program 10 then generates a spline coupling model by storing default values for the various specifications. The user then can manipulate the spline coupling model by modifying its various specifications. The final result will be a computer-aided design that enables designers to optimize spline couplings based on their performance and design specifications. The spline coupling model software program continually evaluates the validity of spline coupling models for a particular application. For example, if a user enters a data value signal corresponding to a parameter signal, the software compares the value of the signal entered to the corresponding value in the knowledge base. If the values are outside the specifications, a warning message is displayed. Once this comparison is completed, the spline coupling model software program outputs a report with the results. Various spline coupling design factors include weight, material properties, and performance requirements. Weight is 1 of the most important design factors, particularly in the aeronautics field. ANSI and S.A.E. tables do not consider these factors when calculating the load characteristics of spline couplings. Other design requirements may also restrict the configuration of a spline coupling.
Applications
Spline couplings are a type of mechanical joint that connects 2 rotating shafts. Its 2 parts engage teeth that transfer load. Although splines are commonly over-dimensioned, they are still prone to fatigue and static behavior. These properties also make them prone to wear and tear. Therefore, proper design and selection are vital to minimize wear and tear on splines. There are many applications of spline couplings. A key design is based on the size of the shaft being joined. This allows for the proper spacing of the keys. A novel method of hobbing allows for the formation of tapered bases without interference, and the root of the keys is concentric with the axis. These features enable for high production rates. Various applications of spline couplings can be found in various industries. To learn more, read on. FE based methodology can predict the wear rate of spline couplings by including the evolution of the coefficient of friction. This method can predict fretting wear from simple round-on-flat geometry, and has been calibrated with experimental data. The predicted wear rate is reasonable compared to the experimental data. Friction evolution in spline couplings depends on the spline geometry. It is also crucial to consider the lubrication condition of the splines. Using a spline coupling reduces backlash and ensures proper alignment of mated components. The shaft’s splined tooth form transfers rotation from the splined shaft to the internal splined member, which may be a gear or other rotary device. A spline coupling’s root strength and torque requirements determine the type of spline coupling that should be used. The spline root is usually flat and has a crown on 1 side. The crowned spline has a symmetrical crown at the centerline of the face-width of the spline. As the spline length decreases toward the ends, the teeth are becoming thinner. The tooth diameter is measured in pitch. This means that the male spline has a flat root and a crowned spline.
Predictability
Spindle couplings are used in rotating machinery to connect 2 shafts. They are composed of 2 parts with teeth that engage each other and transfer load. Spline couplings are commonly over-dimensioned and are prone to static and fatigue behavior. Wear phenomena are also a common problem with splines. To address these issues, it is essential to understand the behavior and predictability of these couplings. Dynamic behavior of spline-rotor couplings is often unclear, particularly if the system is not integrated with the rotor. For example, when a misalignment is not present, the main response frequency is 1 X-rotating speed. As the misalignment increases, the system starts to vibrate in complex ways. Furthermore, as the shaft orbits depart from the origin, the magnitudes of all the frequencies increase. Thus, research results are useful in determining proper design and troubleshooting of rotor systems. The model of misaligned spline couplings can be obtained by analyzing the stress-compression relationships between 2 spline pairs. The meshing force model of splines is a function of the system mass, transmitting torque, and dynamic vibration displacement. This model holds when the dynamic vibration displacement is small. Besides, the CZPT stepping integration method is stable and has high efficiency. The slip distributions are a function of the state of lubrication, coefficient of friction, and loading cycles. The predicted wear depths are well within the range of measured values. These predictions are based on the slip distributions. The methodology predicts increased wear under lightly lubricated conditions, but not under added lubrication. The lubrication condition and coefficient of friction are the key factors determining the wear behavior of splines.
Hydraulic Mountain Drilling Machine Borehole Drill Rig Made in China
Product Information of XY-600F Drilling Rig Machine
XY-600F hydraulic drilling rig adopts the latest technology for CZPT drilling. It is widely used to drill water well, geothermal hole, mining blasting, geological exploration, water conservancy, etc.
Parameters of XY-600F Drilling Rig Machine
XY-600F Drilling Rig
1. Main Parameters
Max. Drilling Depth
600m
Diameter of drill pipe
Φ42,Φ50,Φ60,Φ76
Angle of vertical spindle
90°~65°
Drilling capability
Φ75mm drill diameter
Max. Depth 600m
Φ108mm drill diameter
Max. Depth 500m
Φ127mm drill diameter
Max. Depth 400m
Φ159mm drill diameter
Max. Depth 300m
Φ219mm drill diameter
Max. Depth 210m
Φ273mm(10-4/5in) drill diameter
Max. Depth 150m
Φ500mm(19-3/5in) drill diameter
Max. Depth 80m
2. Vertical Spindle
Rotation speed
Forward 10 grades
30-1050r/min
Reverse 2 grades
29-137r/min
Spindle stroke
560mm
Spindle bore
96mm
Hoisting capability
6000kg
Max. Torque
3800N.m
3. Main hoist
Lifting speed of single wire
0.5-1.9m/s
Diameter of wire rope
12.5mm
Carry capacity of single wire
4000kg
Diameter of winding drum
300mm
Volume of winding drum
50m
Lifting capability of single wire
3000kg
4.Auxiliary Hoist
Winding drum
140mm
Diameter of steel wire rope
6mm
Volume of winding drum
450m
5. Mud pump(as per your choice)
Horizontal triplex mud pump
BW-200II
Displacement
200L/min
Working pressure
50kg/cm² @ 5MPa
Diameter of water inlet hose
65mm
Diameter of water outlet hose
38mm
6.Power supply(choose 1 between the following two)
Diesel engine
Model 4100,38KW(50PS)
Electrical motor
Y180M-4B35,22kw
7. Weight and Dimension of main drilling rig
Weight
2880kg
Dimension
3700×1850×3200mm
8.Six-wheel Trailer
Walking speed
25Km/hr
Frame carrying capacity
4 tons
Steering wheel 600-14
0.75 tons
Bearing wheel 650-15
0.9 tons
Minimum turning angle
6.8m
9. Oil Pump
CBN-F32
Working pressure
20Mpa
Displacement
32L/min
Characteristics of XY-600F Drilling Rig Machine
(1) XY-600F adopts the newest automobile transmission assembly, with 10 grades forward rotation speed and 2 grades reverse rotation speed, reasonable design, wide speed adjustable range, can meet various stratum drilling requirements.
(2) Can meet the demand for various high efficiency drilling process needs, such as diamond wire line coring, impact drilling, reverse circulation continuous coring (sampling) etc.
(3) Strong power, strong torque, strong bearing capacity, convenient to solve different downhole accidents. Compact mechanical transmission structure, light weight, large diameter of spindle bore, hydraulic stabilizer legs, good rigidity .
(4) Using hexagonal kelly bar to ensure the stable transmission of torque. Can not only meet the small-diameter CZPT deep hole drilling, but also can satisfy the large-diameter carbide drilling and different engineering drilling works.
(5) Advanced hydraulic system design makes the control handles concentrated, compact layout reasonable, easy operation, flexible and reliable; Can realize remote speed change, more humanization operation.
(6) The hydraulic system can adjust the feed pressure and feed speed during controlling the feed process, in order to meet different stratum drilling needs. At the same time it is equipped with the bottom hole pressure indicator, easy to master the situation inside the hole.
(7) The vertical spindle is equipped with hydraulic chuck,using the connecting rod type spring to clamp, hydraulic chuck to loosen, carbide welding type slips, strong clamping force,long service life and reliable operation.
(8) Advanced transfer case design, can implement easily independent operation of vertical shaft and winch.
Working of Drilling Rig Machine
DEFY Service
1.Professional technical support pre-sale, sale and after-sale . 2.Your problems can get feedback in 8 hours and be solved in 24 hours. 3.Machine can be customized as per your requirement. 4.One year quality warranty. 5.Training: operation manual and DVD operation video, overseas installation is also available. 6.Spare parts are available in our factory at cost price for former customers.
Other models for your choice:
Model
Drilling Caliber
Max. depth
Feature
XY100
75~300mm
100m
Disassemble drill tower;
Small in size.
XY-130
75~300mm
130m
XY-150
75~400mm
150m
XY-180
75~400mm
180m
XY-200
75~400mm
200m
XY-200F
75~400mm
200m
Integrative drill tower;
Easy to transport.
XY-200C
75~400mm
200m
XY-600F
75~500mm
600m
FAQ
Q1: Are you trading company or manufacturer? A1: We are original equipment manufacturer.we design,produce and sell.We master the core technology, and constantly adjust our products according to the market trend and customer feedback, ensure product quality.
Q2: How long is your delivery time? A2: It is according to the model and quantity. Generally it is 3-5 days if the machines are in stock. It will be 15-30 days if you want to customize the machines.
Q3: What do I need to do after payment? A3: a) If under FOB trading terms,you need to employ a ship forwarder to ship the goods to you; b) Under CIF trading terms,we send the goods to the destination port,and contact you to pick up the goods; All documents for customs clearance will be sent to you by international express after shipment.
How to choose a suitable drilling rig?
1. What will you do using drilling rig? —For water project, core sample, soil test, mineral prospect or others?
2. The depth you need? —For water well, generally, 30-200m. For core sample, 30-600m, even more.
3. Any requirements to hole diameter?
—Within a certain range, the smaller diameter, the deeper depth. Mathematically, we call it inversely proportional.
4. Working land condition? A. soil, sand, weathered land, etc. soft stratum. B. soil, sand, soft and hard rock stratum, mixed one. C. Mainly hard rock, like granite.
Based on the above information, Our experienced engineers will help you recommend suitable machine and price. If you have special demands, please tell us ahead.
About Us
HangZhou CZPT Mechanical & Electrical Equipment Co.,Ltd. locates in High-tech zone of HangZhou city, China.
Our factory dedicates in manufacturing drilling rig since 1970s, more than 40 years’ experience of production and development makes our product quality rank in the leading position at home and abroad.
We are always seeking for ever greater perfection, keeping improving the production technology, offering better user experience.
An Overview of Worm Shafts and Gears
This article provides an overview of worm shafts and gears, including the type of toothing and deflection they experience. Other topics covered include the use of aluminum versus bronze worm shafts, calculating worm shaft deflection and lubrication. A thorough understanding of these issues will help you to design better gearboxes and other worm gear mechanisms. For further information, please visit the related websites. We also hope that you will find this article informative.
Double throat worm gears
The pitch diameter of a worm and the pitch of its worm wheel must be equal. The 2 types of worm gears have the same pitch diameter, but the difference lies in their axial and circular pitches. The pitch diameter is the distance between the worm’s teeth along its axis and the pitch diameter of the larger gear. Worms are made with left-handed or right-handed threads. The lead of the worm is the distance a point on the thread travels during 1 revolution of the worm gear. The backlash measurement should be made in a few different places on the gear wheel, as a large amount of backlash implies tooth spacing. A double-throat worm gear is designed for high-load applications. It provides the tightest connection between worm and gear. It is crucial to mount a worm gear assembly correctly. The keyway design requires several points of contact, which block shaft rotation and help transfer torque to the gear. After determining the location of the keyway, a hole is drilled into the hub, which is then screwed into the gear. The dual-threaded design of worm gears allows them to withstand heavy loads without slipping or tearing out of the worm. A double-throat worm gear provides the tightest connection between worm and gear, and is therefore ideal for hoisting applications. The self-locking nature of the worm gear is another advantage. If the worm gears are designed well, they are excellent for reducing speeds, as they are self-locking. When choosing a worm, the number of threads that a worm has is critical. Thread starts determine the reduction ratio of a pair, so the higher the threads, the greater the ratio. The same is true for the worm helix angles, which can be one, two, or 3 threads long. This varies between a single thread and a double-throat worm gear, and it is crucial to consider the helix angle when selecting a worm. Double-throat worm gears differ in their profile from the actual gear. Double-throat worm gears are especially useful in applications where noise is an issue. In addition to their low noise, worm gears can absorb shock loads. A double-throat worm gear is also a popular choice for many different types of applications. These gears are also commonly used for hoisting equipment. Its tooth profile is different from that of the actual gear.
Bronze or aluminum worm shafts
When selecting a worm, a few things should be kept in mind. The material of the shaft should be either bronze or aluminum. The worm itself is the primary component, but there are also addendum gears that are available. The total number of teeth on both the worm and the addendum gear should be greater than 40. The axial pitch of the worm needs to match the circular pitch of the larger gear. The most common material used for worm gears is bronze because of its desirable mechanical properties. Bronze is a broad term referring to various copper alloys, including copper-nickel and copper-aluminum. Bronze is most commonly created by alloying copper with tin and aluminum. In some cases, this combination creates brass, which is a similar metal to bronze. The latter is less expensive and suitable for light loads. There are many benefits to bronze worm gears. They are strong and durable, and they offer excellent wear-resistance. In contrast to steel worms, bronze worm gears are quieter than their counterparts. They also require no lubrication and are corrosion-resistant. Bronze worms are popular with small, light-weight machines, as they are easy to maintain. You can read more about worm gears in CZPT’s CZPT. Although bronze or aluminum worm shafts are the most common, both materials are equally suitable for a variety of applications. A bronze shaft is often called bronze but may actually be brass. Historically, worm gears were made of SAE 65 gear bronze. However, newer materials have been introduced. SAE 65 gear bronze (UNS C90700) remains the preferred material. For high-volume applications, the material savings can be considerable. Both types of worms are essentially the same in size and shape, but the lead on the left and right tooth surfaces can vary. This allows for precise adjustment of the backlash on a worm without changing the center distance between the worm gear. The different sizes of worms also make them easier to manufacture and maintain. But if you want an especially small worm for an industrial application, you should consider bronze or aluminum.
Calculation of worm shaft deflection
The centre-line distance of a worm gear and the number of worm teeth play a crucial role in the deflection of the rotor. These parameters should be entered into the tool in the same units as the main calculation. The selected variant is then transferred to the main calculation. The deflection of the worm gear can be calculated from the angle at which the worm teeth shrink. The following calculation is helpful for designing a worm gear. Worm gears are widely used in industrial applications due to their high transmittable torques and large gear ratios. Their hard/soft material combination makes them ideally suited for a wide range of applications. The worm shaft is typically made of case-hardened steel, and the worm wheel is fabricated from a copper-tin-bronze alloy. In most cases, the wheel is the area of contact with the gear. Worm gears also have a low deflection, as high shaft deflection can affect the transmission accuracy and increase wear. Another method for determining worm shaft deflection is to use the tooth-dependent bending stiffness of a worm gear’s toothing. By calculating the stiffness of the individual sections of a worm shaft, the stiffness of the entire worm can be determined. The approximate tooth area is shown in figure 5. Another way to calculate worm shaft deflection is by using the FEM method. The simulation tool uses an analytical model of the worm gear shaft to determine the deflection of the worm. It is based on a two-dimensional model, which is more suitable for simulation. Then, you need to input the worm gear’s pitch angle and the toothing to calculate the maximum deflection.
Lubrication of worm shafts
In order to protect the gears, worm drives require lubricants that offer excellent anti-wear protection, high oxidation resistance, and low friction. While mineral oil lubricants are widely used, synthetic base oils have better performance characteristics and lower operating temperatures. The Arrhenius Rate Rule states that chemical reactions double every 10 degrees C. Synthetic lubricants are the best choice for these applications. Synthetics and compounded mineral oils are the most popular lubricants for worm gears. These oils are formulated with mineral basestock and 4 to 6 percent synthetic fatty acid. Surface-active additives give compounded gear oils outstanding lubricity and prevent sliding wear. These oils are suited for high-speed applications, including worm gears. However, synthetic oil has the disadvantage of being incompatible with polycarbonate and some paints. Synthetic lubricants are expensive, but they can increase worm gear efficiency and operating life. Synthetic lubricants typically fall into 2 categories: PAO synthetic oils and EP synthetic oils. The latter has a higher viscosity index and can be used at a range of temperatures. Synthetic lubricants often contain anti-wear additives and EP (anti-wear). Worm gears are frequently mounted over or under the gearbox. The proper lubrication is essential to ensure the correct mounting and operation. Oftentimes, inadequate lubrication can cause the unit to fail sooner than expected. Because of this, a technician may not make a connection between the lack of lube and the failure of the unit. It is important to follow the manufacturer’s recommendations and use high-quality lubricant for your gearbox. Worm drives reduce backlash by minimizing the play between gear teeth. Backlash can cause damage if unbalanced forces are introduced. Worm drives are lightweight and durable because they have minimal moving parts. In addition, worm drives are low-noise and vibration. In addition, their sliding motion scrapes away excess lubricant. The constant sliding action generates a high amount of heat, which is why superior lubrication is critical. Oils with a high film strength and excellent adhesion are ideal for lubrication of worm gears. Some of these oils contain sulfur, which can etch a bronze gear. In order to avoid this, it is imperative to use a lubricant that has high film strength and prevents asperities from welding. The ideal lubricant for worm gears is 1 that provides excellent film strength and does not contain sulfur.
Drill Machinery Rock Core Bore Borehole Water Well Drilling Rig Machine with Price
Crawler Mine Drill Rig Machinery for water well
Production Description YG series hydraulic water well drilling rig is mainly used for water well / borehole / wellhole /, geological general investigation and exploration/ drillinng coring ,kinds of hole in concrete structure,road and tall building foundation exploration,river levees,subgrade grouting hole drilling and direct grouting,civil wells and earth temperature central air conditioner,etc.
Feature
1.Engine:Feed by hydraulic cylinder,the drilling efficiency is higher and it can save labor. 2.Drill rod:53×59 drilling rod adopted,high rigidity and strong delivery torque. 3.Spindle:Vertical spindle are fixed by 4 groups of bearing to ensure that the rotary machine is rigid enough for gravel layer and other complex geoloical conditions. 4.Mud pump:Equip mud pump with flow 160L/min,save cost and also make the structure compact. 5.Concentrated handle, small footprint,light weight, strong decomposition, easy to move.
Technical Parameter
The whole machine parameters
Model
YG-130Y/130YY
YG-180Y/180YY
YG-200Y/200YY
Drill hole depth
130m
180m
200m
Maximum opening diameter
220mm
220mm
325mm
Final hole diameter
75mm
75mm
75mm
Drill pipe diameter
Φ42mm,50mm,60mm
Φ42mm,50mm,60mm
Φ42mm,50mm,60mm
Borehole inclination
90°- 75°
90°- 75°
90°- 75°
Power(diesel engine)
13.2/2200kw/r/min
13.2/2200kw/r/min
15/2200kw/r/min
Motor
22KW
36kw
42kw
Vertical shaft
Vertical spindle speed
142,285,570r/min
130,480,730,1045r/min
130,480,730,1045r/mi
Vertical stroke
450mm
450mm
450mm
Hoist
Single line lifting capacity
20KN
21KN
25KN
Single rope lifting speed
0.41-1.64m/s
0.35-2.23m/s
0.12-0.95m/s
Drum diameter
Φ140mm
Φ140mm
Φ140mm
Diameter of wire rope
Φ9.3mm
Φ9.3mm
Φ13mm
Wire rope capacity
27m
27m
35m
Mud pump
Model
BW160
BW160
BW250
Flow
160L/min
160L/min
250L/min
Maximum pressure
12Mpa
12Mpa
17Mpa
Reciprocating frequency
93times/min
93times/min
93times/min
Water inlet diameter
Φ51mm
Φ51mm
Φ75mm
Water to exit diameter
Φ32mm
Φ32mm
Φ50mm
Drilling Tower
Rated load
18Ton
18Ton
18Ton
Effective height
6.5m
7.5m
9m
Tower leg spec.
Φ73mm
Φ73mm
Φ73mm
Package
Water well drilling rig machine use Standard export wooden case or as your requirement.
Company Information ZheJiang CZPT Machinery Co., Ltd., located in Xihu (West Lake) Dis. District of HangZhou City, ZheJiang Province, is a large engineering machinery manufacturing enterprise which focuses on research and development, production and sales of drilling equipment in mining, tunnel, road and bridge construction. We can produce sets of construction system equipment such as drilling machine, road construction machine and demolition cutting machine, etc. Technical design, material purchasing, precise manufacturing and strict quality inspection are all processed according to top standard. “Quality First, Reputation First, Be Innovative, Be Excellent.” has always been our purpose. We warmly welcome your corporation from all fields and build great future for us all.
Working Cases
Purchase Assurance High quality raw material suppliers provide us stable and excellent performance drillinh rig machines; skilled and responsible engineers, technicians and workers keep our production line proceed well-organized; we’ll test running every machine before delivery, to make sure it works well in clients’ construction sites; all machines have one–year warranty and lifelong maintenance, our sales manager provide elaborate machine-related consulting service and technical assistance during pre and after-sales, to make sure clients are proficient in operating our machines.
Related Machines
Portable / Trailer Wheel / CrawlerHydraulic Water Well Drilling Rig Machine
Screws and Screw Shafts
A screw is a mechanical device that holds objects together. Screws are usually forged or machined. They are also used in screw jacks and press-fitted vises. Their self-locking properties make them a popular choice in many different industries. Here are some of the benefits of screws and how they work. Also read about their self-locking properties. The following information will help you choose the right screw for your application.
Machined screw shaft
A machined screw shaft can be made of various materials, depending on the application. Screw shafts can be made from stainless steel, brass, bronze, titanium, or iron. Most manufacturers use high-precision CNC machines or lathes to manufacture these products. These products come in many sizes and shapes, and they have varying applications. Different materials are used for different sizes and shapes. Here are some examples of what you can use these screws for: Screws are widely used in many applications. One of the most common uses is in holding objects together. This type of fastener is used in screw jacks, vises, and screw presses. The thread pitch of a screw can vary. Generally, a smaller pitch results in greater mechanical advantage. Hence, a machined screw shaft should be sized appropriately. This ensures that your product will last for a long time. A machined screw shaft should be compatible with various threading systems. In general, the ASME system is used for threaded parts. The threaded hole occupies most of the shaft. The thread of the bolt occupy either part of the shaft, or the entire one. There are also alternatives to bolts, including riveting, rolling pins, and pinned shafts. These alternatives are not widely used today, but they are useful for certain niche applications. If you are using a ball screw, you can choose to anneal the screw shaft. To anneal the screw shaft, use a water-soaked rag as a heat barrier. You can choose from 2 different options, depending on your application. One option is to cover the screw shaft with a dust-proof enclosure. Alternatively, you can install a protective heat barrier over the screw shaft. You can also choose to cover the screw shaft with a dust-proof machine. If you need a smaller size, you can choose a smaller screw. It may be smaller than a quarter of an inch, but it may still be compatible with another part. The smaller ones, however, will often have a corresponding mating part. These parts are typically denominated by their ANSI numerical size designation, which does not indicate threads-per-inch. There is an industry standard for screw sizes that is a little easier to understand.
Ball screw nut
When choosing a Ball screw nut for a screw shaft, it is important to consider the critical speed of the machine. This value excites the natural frequency of a screw and determines how fast it can be turned. In other words, it varies with the screw diameter and unsupported length. It also depends on the screw shaft’s diameter and end fixity. Depending on the application, the nut can be run at a maximum speed of about 80% of its theoretical critical speed. The inner return of a ball nut is a cross-over deflector that forces the balls to climb over the crest of the screw. In 1 revolution of the screw, a ball will cross over the nut crest to return to the screw. Similarly, the outer circuit is a circular shape. Both flanges have 1 contact point on the ball shaft, and the nut is connected to the screw shaft by a screw. The accuracy of ball screws depends on several factors, including the manufacturing precision of the ball grooves, the compactness of the assembly, and the set-up precision of the nut. Depending on the application, the lead accuracy of a ball screw nut may vary significantly. To improve lead accuracy, preloading, and lubrication are important. Ewellix ball screw assembly specialists can help you determine the best option for your application. A ball screw nut should be preloaded prior to installation in order to achieve the expected service life. The smallest amount of preload required can reduce a ball screw’s calculated life by as much as 90 percent. Using a lubricant of a standard grade is recommended. Some lubricants contain additives. Using grease or oil in place of oil can prolong the life of the screw. A ball screw nut is a type of threaded nut that is used in a number of different applications. It works similar to a ball bearing in that it contains hardened steel balls that move along a series of inclined races. When choosing a ball screw nut, engineers should consider the following factors: speed, life span, mounting, and lubrication. In addition, there are other considerations, such as the environment in which the screw is used.
Self-locking property of screw shaft
A self-locking screw is 1 that is capable of rotating without the use of a lock washer or bolt. This property is dependent on a number of factors, but 1 of them is the pitch angle of the thread. A screw with a small pitch angle is less likely to self-lock, while a large pitch angle is more likely to spontaneously rotate. The limiting angle of a self-locking thread can be calculated by calculating the torque Mkdw at which the screw is first released. The pitch angle of the screw’s threads and its coefficient of friction determine the self-locking function of the screw. Other factors that affect its self-locking function include environmental conditions, high or low temperature, and vibration. Self-locking screws are often used in single-line applications and are limited by the size of their pitch. Therefore, the self-locking property of the screw shaft depends on the specific application. The self-locking feature of a screw is an important factor. If a screw is not in a state of motion, it can be a dangerous or unusable machine. The self-locking property of a screw is critical in many applications, from corkscrews to threaded pipe joints. Screws are also used as power linkages, although their use is rarely necessary for high-power operations. In the archimedes’ screw, for example, the blades of the screw rotate around an axis. A screw conveyor uses a rotating helical chamber to move materials. A micrometer uses a precision-calibrated screw to measure length. Self-locking screws are commonly used in lead screw technology. Their pitch and coefficient of friction are important factors in determining the self-locking property of screws. This property is advantageous in many applications because it eliminates the need for a costly brake. Its self-locking property means that the screw will be secure without requiring a special kind of force or torque. There are many other factors that contribute to the self-locking property of a screw, but this is the most common factor. Screws with right-hand threads have threads that angle up to the right. The opposite is true for left-hand screws. While turning a screw counter-clockwise will loosen it, a right-handed person will use a right-handed thumb-up to turn it. Similarly, a left-handed person will use their thumb to turn a screw counter-clockwise. And vice versa.
Materials used to manufacture screw shaft
Many materials are commonly used to manufacture screw shafts. The most common are steel, stainless steel, brass, bronze, and titanium. These materials have advantages and disadvantages that make them good candidates for screw production. Some screw types are also made of copper to fight corrosion and ensure durability over time. Other materials include nylon, Teflon, and aluminum. Brass screws are lightweight and have aesthetic appeal. The choice of material for a screw shaft depends on the use it will be made for. Shafts are typically produced using 3 steps. Screws are manufactured from large coils, wire, or round bar stock. After these are produced, the blanks are cut to the appropriate length and cold headed. This cold working process pressudes features into the screw head. More complicated screw shapes may require 2 heading processes to achieve the desired shape. The process is very precise and accurate, so it is an ideal choice for screw manufacturing. The type of material used to manufacture a screw shaft is crucial for the function it will serve. The type of material chosen will depend on where the screw is being used. If the screw is for an indoor project, you can opt for a cheaper, low-tech screw. But if the screw is for an outdoor project, you’ll need to use a specific type of screw. This is because outdoor screws will be exposed to humidity and temperature changes. Some screws may even be coated with a protective coating to protect them from the elements. Screws can also be self-threading and self-tapping. The self-threading or self-tapping screw creates a complementary helix within the material. Other screws are made with a thread which cuts into the material it fastens. Other types of screws create a helical groove on softer material to provide compression. The most common uses of a screw include holding 2 components together. There are many types of bolts available. Some are more expensive than others, but they are generally more resistant to corrosion. They can also be made from stainless steel or aluminum. But they require high-strength materials. If you’re wondering what screws are, consider this article. There are tons of options available for screw shaft manufacturing. You’ll be surprised how versatile they can be! The choice is yours, and you can be confident that you’ll find the screw shaft that will best fit your application.
