Agricultural vehicle chassis with stepless-regulated wheel track

Abstract

The invention belongs to the technical field of a vehicle chassis and relates to an agricultural vehicle chassis with a stepless-regulated wheel track. The longitudinal central planes of commonly used vehicle chassises of two groups of agricultural vehicle wheel track stepless regulation devices are arranged on a rectangular vehicle frame back and forth according to the vehicle wheel shaft distance; the two groups wheel track stepless regulation devices are respectively and fixedly connected with the front end and the back end of the vehicle frame through level tracks to form the agriculturalvehicle chassis with the stepless-regulated wheel track; each wheel track stepless regulation device consists of a screw rod, a nut, a slide block, a bearing rod, a vehicle wheel shaft, wheels, one level track, a coupler and a retarder; and the two retarders of the front and back wheel track stepless regulation devices are synchronously driven by an outer driving force, and input shaft rotating angles of the front and the back retarders are synchronously changed and kept the same, and distances between each wheel and the vehicle longitudinal central plane are symmetrically changed, so wheel track stepless regulation on the vehicle chassis is realized, and the mechanical operation requirement on crops with different row spaces is met. The agricultural vehicle chassis with the stepless-regulated wheel track is suitable for mechanical operation for field management in a growing period of the crops.

Description

technical field [0001] The invention belongs to the technical field of vehicle chassis, in particular to an agricultural vehicle chassis with stepless wheelbase adjustment. Background technique [0002] my country is a vast agricultural country with a wide range of crops. There are many types of crops in the north and south with great differences. The row spacing of different crops is generally different, and the row spacing of the same crop in different regions or different planting methods is generally different. During the growth period of crops, field management mechanization operations such as weeding, spraying, and fertilization require operating vehicles to walk along the row spacing of crops. Therefore, the wheelbase of the agricultural vehicle chassis is required to be adjusted according to the change of the row spacing of the crops, and an agricultural vehicle chassis with a large wheelbase adjustment is required. . With the development of our country's economy, t...

AI Technical Summary

Problems solved by technology

At present, domestic tractors and agricultural machinery chassis generally have a fixed wheelbase, which is difficult to meet the requirements of mechanized crop field management; however, some existing public technologies have realized wheelbase adjustment, and the application number is "200920212687.X", and the name is The utility model patent of "adjustable wheelbase device" can realize the wheelbase adjustment by directly connecting the wheel and the drive shaft, or removing the distance-increasing connector, but the distance-increasing connector needs to be replaced during the wheelbase adjustment process. The adjustment is inconvenient; the application number is "200920223898.3", and the utility model patent named "Track Adjustment Mechanism for Vehicles" is connected to the wheel through a telescopic half shaft. Although it can also change the track of the vehicle, it focuses on adjusting the center of gravity of the vehicle. , to ensure the stable running of the vehicle, the adjustment range of the wheel base is small, and the application has certain limitations; the foreign model of the CASE spraying machine, PATRIOT4420, pushes the wheel supporting part to move relative to the frame through the hydraulic cylinder, and the wheel base can be realized. However, four groups of hydraulic cylinders drive each wheel supporting part to move independently. Due to the different moving resistance of each wheel, it is difficult to coordinate and move in unison, resulting in complex control and detection systems, high failure rates, and poor reliability and stability.

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