Four-wheel drive rice transplanter self-propelled chassis front and rear wheel steering linkage mechanism

Abstract

The invention provides a front wheel and rear wheel steering linkage mechanism of a self-propelled chassis of a four-wheel drive rice transplanter. A front walking drive bridge assembly and a rear walking drive bridge assembly are respectively mounted on the lower parts of the left side and the right side of the front end and the rear end of a frame welded part in a hanging manner through front suspension double arms, a front hydraulic damping shock absorber, rear suspension double arms and a rear hydraulic damping shock absorber; a main gear case assembly, a walking power transmission gear case, a steering driving hydraulic oil cylinder and an eccentric rotating drive shaft assembly are arranged on the frame welded part; the main gear case assembly is connected with the walking power transmission gear case by a transmission system; the walking power transmission gear case is respectively connected with the front walking drive bridge assembly and the rear walking drive bridge assembly by a front drive force transmission shaft and a rear drive force transmission shaft; and a steering drive hydraulic oil cylinder is respectively connected with spherical case shells on opposite sides of the front walking drive bridge assembly and the rear walking drive bridge assembly by an eccentric rotating drive shaft assembly and a front and rear cornering drive connecting rod combination. When the mechanism turns a corner, ruts of front wheels and rear wheels are superposed, degree of damage to flatness of a paddy field is small, walking resistance is small, and the front wheel and rear wheel steering linkage mechanism runs reliably.

Description

technical field [0001] The invention belongs to agricultural machinery, and mainly relates to a front and rear wheel steering linkage mechanism of a rice transplanter self-propelled chassis. Background technique [0002] The rear driving wheel of the existing four-wheel drive rice transplanter self-propelled chassis rear driving drive axle assembly is not provided with a steering mechanism and does not have a steering function. In the actual operation of the paddy field, when the steering movement is performed, due to the different turning radii of the front and rear driving wheels of the self-propelled chassis of the rice transplanter, the turning radius of the front driving wheel is large, and the turning radius of the rear driving wheel is small. Road wheel grooves destroy the smoothness of the paddy fields, affect and reduce the quality of subsequent rice seedling transplanting operations, and are prone to floating seedlings. Contents of the invention [0003] The pur...

AI Technical Summary

Problems solved by technology

In the actual operation of the paddy field, when the steering movement is performed, due to the different turning radii of the front and rear driving wheels of the self-propelled chassis of the rice transplanter, the turning radius of the front driving wheel is large, and the turning radius of the rear driving wheel is small. Road wheel grooves destroy the flatness of the rice field, affect and reduce the quality of the subsequent rice seedling transplanting operation, and are prone to floating seedlings

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