What is the cause of the tractor front wheel
In 1978, according to the requirements of the ministry of machinery, tiangong set up a series standard of Chinese wheeled loading machine based on the liuzhou Z450. Formulating standards, using have Z on behalf of the loader, L to replace "4" on behalf of the wheel, change for ZL50 Z450, was developed with liugong ZL50 type as the base type of ZL series wheel loader standard in our country, this is a major turning point in the sound on the loader development in our country. After the standards formulated by the industry division of labor, liugong, mansion manufacturing ZL40 more than large and medium-sized wheel loader, a worker, appropriate manufacturing small and medium-sized wheel loader under ZL30, gradually formed the liugong, mansion, and the appropriate the loader four backbone enterprises. By the late 1970s and early 1980s, the manufacturing enterprises of Chinese load-carrying machines had increased to more than 20, which initially formed China's loader industry. So far, the wheel loader has evolved into the third generation, but the most basic structure is still being developed by Z450 (ZL50). The second generation doesn't change very much, the third generation is slightly larger. In 2001, the total industry total sales of China's load-carrying machine had exceeded 30,000, which was one of the highest in the world. As a result, our country has become the world's largest manufacturer of load-producing machines.
The tractor's front wheel vibrates when the tractor is moving in a straight line while the front wheel is rotating while the steering wheel is moving around. This phenomenon is more common in tractor usage. Front wheel shimmy affect tractor straight line driving stability, reduce the use safety of the tractor, accelerate the tire wear, and generate additional load in the steering system, accelerate the wear of steering system parts. So study and solve the front wheel pendulum problem. From the point of view of mechanical vibration, the steering of a wheeled tractor is a system with mass (rotational inertia), damping and elastic elements. The causes of the front wheel oscillation are complex and generally considered to have the following aspects; (1) there is a phase difference between the wobble of the front wheel and the return of the tyre when the current wheel wobbles due to the elasticity of the tyre. This phase...
China's modern wheeled loader began in the mid-1960s with the Z435. This machine is the whole frame, the rear axle turns. After years of efforts, in the absorption of the world's most advanced technology of wheel loader was, on the basis of the successful development of the power of 162 kw type wheel loader shovel, finalize the design for Z450 ZL50 (later), and in December 18, 1971 formally through expert appraisal. In this way, the first articulated wheel loader was born in China, thus creating the history of the formation and development of the loader industry in China. Z450 type loader hydraulic mechanical transmission, power shift, build drive, hydraulic control, articulated power steering, gas pushed oil strength braking, etc. The basic structure of modern wheel loader, as the world's advanced level at that time. It also basically represents the basic structure of the first wheel load in our country. The machine has a good performance in general performance, and the insertion force has the advantages of large excavating force, maneuvering flexibility, maneuverability and high performance.
