China manufacturer China Manufacturer Tractor 4X4 Wheel 4WD Agricultural Machinery 40HP 50HP 60HP 70HP 80HP 90HP 100HP 120HP 160HP 220HP Farm Tractor for Sale near me factory

Product Description

Product Description

Features:
1.This big tractors is a multi-functional, big horsepower agricultural wheel tractors.
2.It has the characteristics of reliable structure, convenient operation, flexible steering, big traction, easy maintenance etc.
3.This series of tractors is from 110hp to 150hp.
4.It equipped with Weichai, YTO, CZPT diesel engine.
5. The tranmission box  adopt 16F+8R shuttle shifts, front wheel hydraulic steering, mechanical step shift. Brake is adopting doube plates oil bath type disc brake. 
6.Rear positioned independent PTO shaft; it is fixed with split type hydraulic suspension system, rear 3 point linkage, three-way hydraulic output valve, with sealed cabin.
7. Used for tilling rotavating, trailing, spraying, ploughing, harrowng, mower cutting, planting, CZPT husbandry etc. 

GP2204 wheel tractor specification
Item Measure specification
Whole unit Brand / GP
Model / GP2204
Type / 4×4 wheel drive
Usage / Agriculture
Dimension(L×W×H) mm 5400×2370×3270
Wheel base mm 2710
Track base( front/rear) mm 1800 ,1920 ,2020/1720-2300
The smallest clearance mm 490
Min. operational weight g 6410
Gear no. / 16F+16R
Engine Brand / YUCHAI
Type   In-line, direct injection,4-stroke,water cooled
Model / Yuchai YC6J220
Manufacturer / Guangxi Yuchai diesel engine Co.,Ltd
Aspiration way / Turbo
Cylinder no. / 6
Diameter X stroke mm 105*125
Rated power W 162
Rated speed r/min 2200
Cooling type / Water cooled
Fuel tank Capacity L 280
Steering and
brake
Steering gear type / Hydraulic steering
Brake model / wet, disc
Transmission Clutch type / Dry, dual-stage action
Gearbox shifting way / Joggle cover
Walking Tyre size( front/rear) / 18.4-26/20.8-38
Working
device
Suspension model / Rear, three-point linkages
Suspension category / III
Adjusting control / Position control, float control
Hydraulic valve / 3 sets
P.T.O. type / Rear, 6 spline
Diameter of spline mm 35
RPM r/min 760/1000
 
GP2204 wheel tractor specification
Item Measure specification
Whole unit Brand / GP
Model / GP2204
Type / 4×4 wheel drive
Usage / Agriculture
Dimension(L×W×H) mm 5400×2370×3270
Wheel base mm 2710
Track base( front/rear) mm 1800 ,1920 ,2020/1720-2300
The smallest clearance mm 490
Min. operational weight g 6410
Gear no. / 16F+16R
Engine Brand / YUCHAI
Type   In-line, direct injection,4-stroke,water cooled
Model / Yuchai YC6J220
Manufacturer / Guangxi Yuchai diesel engine Co.,Ltd
Aspiration way / Turbo
Cylinder no. / 6
Diameter X stroke mm 105*125
Rated power W 162
Rated speed r/min 2200
Cooling type / Water cooled
Fuel tank Capacity L 280
Steering and
brake
Steering gear type / Hydraulic steering
Brake model / wet, disc
Transmission Clutch type / Dry, dual-stage action
Gearbox shifting way / Joggle cover
Walking Tyre size( front/rear) / 18.4-26/20.8-38
Working
device
Suspension model / Rear, three-point linkages
Suspension category / III
Adjusting control / Position control, float control
Hydraulic valve / 3 sets
P.T.O. type / Rear, 6 spline
Diameter of spline mm 35
RPM r/min 760/1000
 

How to Choose the Right Worm Shaft

You might be curious to know how to choose the right Worm Shaft. In this article, you will learn about worm modules with the same pitch diameter, Double-thread worm gears, and Self-locking worm drive. Once you have chosen the proper Worm Shaft, you will find it easier to use the equipment in your home. There are many advantages to selecting the right Worm Shaft. Read on to learn more.
worm shaft

Concave shape

The concave shape of a worm’s shaft is an important characteristic for the design of a worm gearing. Worm gearings can be found in a wide range of shapes, and the basic profile parameters are available in professional and firm literature. These parameters are used in geometry calculations, and a selection of the right worm gearing for a particular application can be based on these requirements.
The thread profile of a worm is defined by the tangent to the axis of its main cylinder. The teeth are shaped in a straight line with a slightly concave shape along the sides. It resembles a helical gear, and the profile of the worm itself is straight. This type of gearing is often used when the number of teeth is greater than a certain limit.
The geometry of a worm gear depends on the type and manufacturer. In the earliest days, worms were made similar to simple screw threads, and could be chased on a lathe. During this time, the worm was often made with straight-sided tools to produce threads in the acme plane. Later, grinding techniques improved the thread finish and reduced distortions resulting from hardening.
When a worm gearing has multiple teeth, the pitch angle is a key parameter. A greater pitch angle increases efficiency. If you want to increase the pitch angle without increasing the number of teeth, you can replace a worm pair with a different number of thread starts. The helix angle must increase while the center distance remains constant. A higher pitch angle, however, is almost never used for power transmissions.
The minimum number of gear teeth depends on the angle of pressure at zero gearing correction. The diameter of the worm is d1, and is based on a known module value, mx or mn. Generally, larger values of m are assigned to larger modules. And a smaller number of teeth is called a low pitch angle. In case of a low pitch angle, spiral gearing is used. The pitch angle of the worm gear is smaller than 10 degrees.
worm shaft

Multiple-thread worms

Multi-thread worms can be divided into sets of one, two, or four threads. The ratio is determined by the number of threads on each set and the number of teeth on the apparatus. The most common worm thread counts are 1,2,4, and 6. To find out how many threads you have, count the start and end of each thread and divide by two. Using this method, you will get the correct thread count every time.
The tangent plane of a worm’s pitch profile changes as the worm moves lengthwise along the thread. The lead angle is greatest at the throat, and decreases on both sides. The curvature radius r” varies proportionally with the worm’s radius, or pitch angle at the considered point. Hence, the worm leads angle, r, is increased with decreased inclination and decreases with increasing inclination.
Multi-thread worms are characterized by a constant leverage between the gear surface and the worm threads. The ratio of worm-tooth surfaces to the worm’s length varies, which enables the wormgear to be adjusted in the same direction. To optimize the gear contact between the worm and gear, the tangent relationship between the two surfaces is optimal.
The efficiency of worm gear drives is largely dependent on the helix angle of the worm. Multiple thread worms can improve the efficiency of the worm gear drive by as much as 25 to 50% compared to single-thread worms. Worm gears are made of bronze, which reduces friction and heat on the worm’s teeth. A specialized machine can cut the worm gears for maximum efficiency.

Double-thread worm gears

In many different applications, worm gears are used to drive a worm wheel. These gears are unique in that the worm cannot be reversed by the power applied to the worm wheel. Because of their self-locking properties, they can be used to prevent reversing motion, although this is not a dependable function. Applications for worm gears include hoisting equipment, elevators, chain blocks, fishing reels, and automotive power steering. Because of their compact size, these gears are often used in applications with limited space.
Worm sets typically exhibit more wear than other types of gears, and this means that they require more limited contact patterns in new parts. Worm wheel teeth are concave, making it difficult to measure tooth thickness with pins, balls, and gear tooth calipers. To measure tooth thickness, however, you can measure backlash, a measurement of the spacing between teeth in a gear. Backlash can vary from one worm gear to another, so it is important to check the backlash at several points. If the backlash is different in two places, this indicates that the teeth may have different spacing.
Single-thread worm gears provide high speed reduction but lower efficiency. A multi-thread worm gear can provide high efficiency and high speed, but this comes with a trade-off in terms of horsepower. However, there are many other applications for worm gears. In addition to heavy-duty applications, they are often used in light-duty gearboxes for a variety of functions. When used in conjunction with double-thread worms, they allow for a substantial speed reduction in one step.
Stainless-steel worm gears can be used in damp environments. The worm gear is not susceptible to rust and is ideal for wet and damp environments. The worm wheel’s smooth surfaces make cleaning them easy. However, they do require lubricants. The most common lubricant for worm gears is mineral oil. This lubricant is designed to protect the worm drive.
worm shaft

Self-locking worm drive

A self-locking worm drive prevents the platform from moving backward when the motor stops. A dynamic self-locking worm drive is also possible but does not include a holding brake. This type of self-locking worm drive is not susceptible to vibrations, but may rattle if released. In addition, it may require an additional brake to keep the platform from moving. A positive brake may be necessary for safety.
A self-locking worm drive does not allow for the interchangeability of the driven and driving gears. This is unlike spur gear trains that allow both to interchange positions. In a self-locking worm drive, the driving gear is always engaged and the driven gear remains stationary. The drive mechanism locks automatically when the worm is operated in the wrong manner. Several sources of information on self-locking worm gears include the Machinery’s Handbook.
A self-locking worm drive is not difficult to build and has a great mechanical advantage. In fact, the output of a self-locking worm drive cannot be backdriven by the input shaft. DIYers can build a self-locking worm drive by modifying threaded rods and off-the-shelf gears. However, it is easier to make a ratchet and pawl mechanism, and is significantly less expensive. However, it is important to understand that you can only drive one worm at a time.
Another advantage of a self-locking worm drive is the fact that it is not possible to interchange the input and output shafts. This is a major benefit of using such a mechanism, as you can achieve high gear reduction without increasing the size of the gear box. If you’re thinking about buying a self-locking worm gear for a specific application, consider the following tips to make the right choice.
An enveloping worm gear set is best for applications requiring high accuracy and efficiency, and minimum backlash. Its teeth are shaped differently, and the worm’s threads are modified to increase surface contact. They are more expensive to manufacture than their single-start counterparts, but this type is best for applications where accuracy is crucial. The worm drive is also a great option for heavy trucks because of their large size and high-torque capacity.