A vehicle longitudinal travel steering mechanism

Abstract

The invention discloses a vehicle longitudinal travel steering mechanism. The vehicle longitudinal travel steering mechanism is characterized in that a left steering oil cylinder and a right steering oil cylinder are arranged at the two sides of two front steering wheels in sequence; one ends of the left steering oil cylinder and the right steering oil cylinder are hinged to respective steering arms, and the other ends of the left steering oil cylinder and the right steering oil cylinder are hinged to a frame; a rod cavity of the left steering oil cylinder is in oil way connection with a rodless cavity of the right steering oil cylinder, and the rod cavity of the left steering oil cylinder is equal to the rodless cavity of the right steering oil cylinder in section area; and when the left and right steering is occurred, four axle lines of the front and rear steering wheels at the left and right side of a vehicle are intersected at one point of the symmetrical axis between the left and right steering wheels. The vehicle longitudinal travel steering mechanism controls the steering modes of four motors by adopting the manners of hydraulic pressure and mechanical components to replace the computer programming, so that the reliability of the vehicle longitudinal travel steering mechanism is improved, and the cost is reduced.

Description

technical field [0001] The invention relates to a steering device, in particular to a vehicle longitudinal travel steering mechanism, and is especially suitable for the longitudinal travel steering mechanism of a forklift. 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 re...

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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