Steering device for a vehicle with four wheels and four directions

Abstract

The invention discloses a steering device of a vehicle with four wheels and four driving directions. The steering device is characterized in that the sides of two front steering wheels are provided with a left steering cylinder and a right steering cylinder in sequence; the four axis lines of the front steering wheel and a rear steering wheel at the left side of the vehicle and the front steering wheel and a rear steering wheel at the right side of the vehicle are intersected onto one point of the symmetrical axis line between the left steering wheels and the right steering wheels; in addition, four-station double-acting cylinders are hinged between a front steering arm and a rear steering arm at the left side as well as between a front steering arm and a rear steering arm at the right side; when the front steering wheels are fixed and the rear steering wheels steer, the axis lines of the left steering wheel and the right steering wheel in the rear steering wheels are intersected on the connecting line of the central lines of the two front steering wheels. The steering device disclosed by the invention has the advantages that a mode of hydraulic and mechanical members is adopted for replacing the mode of using computer programming to control steering of four motors, so that the reliability of the steering device of the vehicle with the four wheels and four driving directions is improved, and the cost is reduced.

Description

technical field [0001] The invention relates to a steering device, in particular to a steering device for a vehicle with four wheels and four directions, and is especially suitable for forklifts. Background technique [0002] For four-wheel and four-direction driving vehicles, it has longitudinal and lateral driving functions, especially for four-wheel and four-direction side forklifts, it has the functions of counterbalanced forklift, side forklift, forward forklift, and fixed platform truck. The purpose of one machine with multiple functions makes it suitable for material handling in various fields, especially for driving in narrow passages and for loading long materials. [0003] However, the steering mechanism of the four-wheel four-way driving vehicle is different from the steering mechanism of the conventional four-wheel drive vehicle. During the longitudinal running of the four-wheel four-way driving vehicle, when the two front wheels are required to turn left and rig...

AI Technical Summary

Problems solved by technology

For the steering device of the existing four-wheel and four-way driving vehicle, the manufacturer generally adopts computer programming to control the four motors to turn. The parameter setting of this method all depends on the ideal flat road surface. The actual road surface in the road deviates far from the ideal road surface requirements, resulting in a large difference in the steering resistance of the four wheels, resulting in a large difference in the loads of the four steering motors, which can easily cause the stalling of individual motors, resulting in failures of the motors and electronic control equipment. The ratio is very high, which makes the reliability of the steering system poor and easy to damage. At the same time, the cost of using four steering motors and four sets of steering electronic control equipment is relatively high, which also greatly increases the purchase cost and maintenance cost of the vehicle.

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