Leveling system and leveling method for agricultural power chassis

Abstract

The invention discloses a leveling system and a leveling method for an agricultural power chassis, and belongs to the technical field of vehicle chassis. The leveling system for an agricultural power chassis comprises a distance measuring sensor, a position sensor, a central processor, a vehicle frame, suspensions and wheels; four groups of the suspensions are mounted on the vehicle frame in bilateral symmetry according to the given wheelbase and wheel track, and the lower ends of the suspensions are connected with the wheels; the information of terrain height in front of the wheels is measured by the distance measuring sensor; the heights of the suspensions are measured by the position sensor to obtain the wheel-terrain height information; calculation and analysis are carried out by the central processor; the suspensions are driven by a servo motor and the heights of the suspensions are adjusted in real time; and the wheels actively contour the ground, so that dynamic leveling of the vehicle body during traveling and operation of the agricultural power chassis is achieved.

Description

technical field [0001] The invention relates to the technical field of vehicle chassis, and relates to an agricultural power chassis leveling system and a leveling method thereof, which are suitable for agricultural power chassis with independently liftable suspensions. Background technique [0002] my country is a country with many mountains and hills, and the plain area only accounts for 1 / 3 of the total area of ​​the country. Among the arable land area, hills and slopes occupy a large area. With the acceleration of agricultural mechanization in my country, farmers have to adapt to hills and slopes The demand for small agricultural machinery is becoming more and more urgent, but the terrain of the hilly slope is complex, the ground is uneven, and the vehicle chassis is difficult to maintain level, which affects the vehicle's walking operation on the hilly slope. Therefore, it is more urgent to adjust the vehicle chassis level during the walking operation. In order to improve...

AI Technical Summary

Problems solved by technology

[0002] my country is a country with many mountains and hills, and the plain area only accounts for 1 / 3 of the total area of ​​the country. Among the arable land area, hills and slopes occupy a large area. With the acceleration of agricultural mechanization in my country, farmers have to adapt to hills and slopes The demand for small agricultural machinery is becoming more and more urgent, but the terrain of the hilly slope is complex, the ground is uneven, and the vehicle chassis is difficult to maintain level, which affects the vehicle's walking operation on the hilly slope. Therefore, it is more urgent to adjust the vehicle chassis level during the walking operation. In order to improve the adaptability to hills and slopes; at the same time, according to the characteristics of agricultural vehicles walking on hills and slopes, it is required to realize the dynamic leveling of the agricultural power chassis body within a certain allowable leveling error range to meet the requirements of high-speed walking operations

[0003] The dynamic leveling of the agricultural power chassis in the process of walking on hills and slopes mainly includes two methods: workbench leveling and vehicle body leveling. There are three-point or four-point leveling methods for workbench leveling. There are many applications for leveling the operating parts of construction machinery. Body leveling is to achieve chassis leveling by adjusting the height of each suspension; the leveling principle adopted is to obtain the inclination angle by installing an inclination sensor on the workbench or the body, and use the computer to adjust the workbench or hydraulic cylinder through the ball screw or hydraulic cylinder. The body is leveled; this leveling method is to perform the leveling work when the body tilts instantaneously, which belongs to the hysteresis leveling and is suitable for low-speed or ultra-low-speed walking operations. It is passive ground profiling and has a certain delay , does not have the ability to detect road information in advance, and actively follow the ground to achieve dynamic leveling of the vehicle body

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