Two-way driving switch valve group control realizes two steering modes hydraulic system

Abstract

The invention discloses a two-way driving switch valve group control to realize two steering mode hydraulic systems, including a hydraulic oil tank, a hydraulic pump, an overflow valve, a filter, a solenoid valve, a switch valve group, a front steering gear, a rear steering gear, and a front steering oil cylinder , Rear steering oil cylinder, the inlet of the hydraulic pump is connected to the hydraulic oil tank, the outlet is connected to the overflow valve and the filter in turn, the outlet of the filter is connected to the inlet of the solenoid valve, the two outlets of the solenoid valve are respectively connected to the front steering gear and the rear steering gear, and the solenoid valve The oil return port of the valve is connected to the hydraulic oil tank, the two outlets of the front steering gear are respectively connected with the switch valve group and the front steering cylinder, the two outlets of the rear steering gear are respectively connected with the switch valve group and the rear steering cylinder, and the front steering cylinder and the rear steering cylinder are connected respectively. The oil cylinders are respectively connected with the switching valve group, and the oil return ports of the front steering gear and the rear steering gear are respectively connected with the hydraulic oil tank. The switching of the vehicle steering mode is realized through the switch valve group, the front and rear steering gear and the hydraulic system, which reduces the steering radius of the vehicle and improves the steering flexibility of the vehicle.

Description

technical field [0001] The invention relates to the field of vehicle steering, in particular to a hydraulic system for realizing two steering modes through control of a two-way driving switch valve group. Background technique [0002] At present, two-way driving vehicles can generally realize front-wheel steering or rear-wheel steering, or use a figure-of-eight steering mode in which the front and rear wheels turn simultaneously. If the front-wheel steering or rear-wheel steering is used alone, the turning radius of the vehicle is large, and the steering is not flexible enough in a small space; if the figure-of-eight steering mode is used alone, it is easy to generate an S-shaped path under the working conditions that require straight walking. [0003] At present, in some vehicles, multiple solenoid valves have been used to work together to control the switching of steering modes, which can realize the switching of several steering modes such as front-wheel steering, rear-wh...

AI Technical Summary

Problems solved by technology

If the front-wheel steering or rear-wheel steering is used alone, the turning radius of the vehicle is large, and the steering is not flexible enough in a small space; if the figure-of-eight steering mode is used alone, it is easy to produce an S-shaped path under the working conditions that require straight walking

[0003] At present, in some vehicles, multiple solenoid valves have been used to work together to control the switching of steering modes, which can realize the switching of several steering modes such as front-wheel steering, rear-wheel steering, and figure-of-eight steering. Complexity, high procurement cost, high failure rate and other shortcomings, so it is necessary to develop a simple and reliable steering mode switching hydraulic system

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