Double-bracket vibration damping front drive axle of tractor

Abstract

The invention discloses a double-bracket vibration damping front drive axle of a tractor. The double-bracket vibration damping front drive axle comprises a fixed bracket mounted at the bottom of a tractor body, a floating bracket is hinged to the rear portion of the fixed bracket, a vibration damping device is arranged between the fixed bracket and the floating bracket, and the drive axle assemblyis mounted on the floating bracket through a rocking shaft. Due to the fact that the driving axle assembly can swing left and right relative to the floating bracket, in the driving process of the tractor, the driving axle assembly can swing left and right around a hinge point between the floating bracket and the driving axle assembly, front axle driving wheels can be always attached to the ground, the contact condition between the front axle driving wheels and the ground and the adaptability to various terrain are better; the vibration damping device is arranged between the fixed bracket andthe floating bracket, so that the vibration and impact of the tractor during driving on the uneven road surface can be greatly reduced, and the dynamic load on the driving wheels and an axle and the damage of the part are reduced; and the front drive axle also has the advantages of being good in rigidity performance, good in driving stability, comfortable in vibration damping, simple in structureand the like.

Description

technical field [0001] The invention belongs to the technical field of tractors, in particular to a tractor front drive axle with a damping function. Background technique [0002] At present, the front drive axles of four-wheel tractors can basically be divided into three categories: one is the rigid front drive axle, which is fixed to the bracket of the machine body through a swing shaft, and has a simple structure and high rigidity. It meets the needs of low-speed operation of the tractor, but because there is no elastic element, it cannot buffer the vibration impact from the ground. When the tractor is running at high speed, the vibration and bumps of the whole machine are particularly serious, which may easily cause fatigue and discomfort to the driver. The second type is an elastic front axle with two longitudinal leaf springs as damping elements. The structural layout of this type of front axle is basically the same as the leaf spring suspension of a truck. This type ...

AI Technical Summary

Problems solved by technology

[0002] At present, the front drive axles of four-wheel tractors can basically be divided into three categories: one is the rigid front drive axle, which is fixed to the bracket of the machine body through a swing shaft, and has a simple structure and high rigidity. It meets the needs of low-speed operation of the tractor, but because there is no elastic element, it cannot buffer the vibration impact from the ground. When the tractor is running at high speed, the vibration and bumps of the whole machine are particularly serious, which may easily cause fatigue and discomfort to the driver.

The second type is an elastic front axle with two longitudinal leaf springs as damping elements. The structural layout of this type of front axle is basically the same as the leaf spring suspension of a truck. This type of elastic front axle has good damping effect, but there is a problem of insufficient lateral stiffness of the suspension when the tractor is operating under heavy load, so it can only be applied to tractors with small and medium horsepower

The third type is the active damping floating front drive axle. This kind of drive axle includes oil and gas damping components such as electro-hydraulic control system, accumulator and damping oil cylinder. The structure is very complicated and the cost is high.

[0004] However, the above-mentioned patent is only an ordinary steering axle, which cannot be equipped with a transmission mechanism, and cannot be applied to a tractor drive axle. Moreover, its elastic element adopts a coil spring or a rubber spring, which is difficult to achieve variable stiffness adjustment, and cannot adapt to the tractor operating environment with large load changes. , so there is room for further improvement

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