A wide ground clearance adjustable chassis and its adjustment method

Abstract

The invention discloses a broad ground clearance adjustable chassis and an adjusting method. The adjustable chassis is composed of a frame, a front axle, a rear axle, a power system, a swinging ground clearance adjusting system, a balanced and steady regulating system and the like. The swinging ground clearance adjusting system comprises a controller, a servo valve, swinging hydraulic cylinders and the like. The balanced and steady regulating system comprises gyroscopes, controllers, servo valves, swinging hydraulic cylinders and the like, wherein the gyroscopes, the controllers, the servo valves, the swinging hydraulic cylinders and the like are arranged on the front axle and the rear axle. The power system comprises an engine, a clutch, a pump station, a hydraulic motor, a proportional valve, front wheels, rear wheels and the like. The controllers control the servo valves to adjust the four swinging hydraulic cylinders to synchronously ascend and descend so as to stably change the ground clearance of the chassis, even the ground clearance of the chassis can be smaller than the radius of the wheels so that the ultra-low ground clearance of the chassis can be achieved. The balanced and steady controllers control the flow of the swinging hydraulic cylinders through the servo valves respectively according to unbalanced and unsteady signals of the front axle and the rear axle collected by the gyroscopes, and therefore the chassis can be automatically adjusted to be balanced and steady.

Description

Technical field: [0001] The invention relates to a high ground clearance self-propelled chassis with adjustable ground clearance, in particular to a hydraulically driven self-propelled chassis whose ground clearance is adjusted through hydraulic cylinder swing. technical background: [0002] In order to meet the field management requirements of high-stem crops in the farmland, a walking chassis with a high clearance is often required, but sometimes, a walking chassis with a lower clearance is required during different growth periods of the crops. However, the existing high ground clearance walking chassis mostly adopt mechanical transmission, which has low transmission stability, heavy weight, fixed ground clearance, and small application range, which cannot meet the requirements of different ground clearance walking chassis in different growth periods of crops. Therefore, in order to meet the field operation requirements of various ground clearances of different crop height...

AI Technical Summary

Problems solved by technology

However, the lifting movements of the four ground clearance adjustment hydraulic cylinders are always in step and at the same lifting height, so the running stability of the chassis is poor

When the ground in the field is not stable, it will cause the chassis to tilt, reduce the efficiency and quality of the sprayer spray, and even damage the spray boom

[0004] In addition, only the lifting hydraulic cylinder is used to adjust the ground clearance of the walking chassis, and its adjustment range is often very limited

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