Steering device, steering hydraulic control oil circuit and forklift comprising

Abstract

The invention discloses a steering device. The steering device comprises a front hinge frame, a rear hinge frame, a hinge spindle and a power system, wherein the front hinge frame is used for being connected with an elevator body; the rear hinge frame is used for being connected with a vehicle body; the front hinge frame and the rear hinge frame are connected with the hinge spindle as the axis toform a hinge mechanism; the power system is used for driving the hinge spindle to be in linkage with the front hinge frame to rotate relative to the rear hinge frame. According to the steering device,a hinge steering device of the compact structure is arranged between the vehicle body and the elevator body so that the elevator body can turn to the left and right sides of the vehicle body by a large angle, and the requirements for operation of a forklift in a narrow roadway are met; meanwhile, the steering device conducts control through a hydraulic system and conducts steering power transmission through a gear transmission unit and can accurately realize the steering angle and improve the steering precision; in addition, a balance valve is arranged in a steering control oil way to realizelocking of the steering state; and thus, the forklift can maintain the steering state.

Description

technical field [0001] The invention relates to the technical field of forklift equipment, in particular to a steering device, a steering hydraulic control oil circuit and a forklift. Background technique [0002] Articulated forklifts operate in narrow lanes, and the required working space directly affects the operating efficiency and storage capacity. The articulated steering mechanism is designed for the main components of the articulated forklift to minimize the space required for maneuvering and improve warehouse capacity; [0003] At present, there are many forms of articulated steering mechanisms, such as direct connection of hydraulic motors, direct connection of slewing ring gears, chain transmission of hydraulic cylinders, and transmission of rotary hydraulic cylinders. All of the above transmission methods have the following obvious disadvantages: [0004] 1. The steering angle is too small, and the steering cannot reach more than 220°; [0005] 2. The size of t...

AI Technical Summary

Problems solved by technology

[0004] 1. The steering angle is too small, and the steering cannot reach more than 220°;

[0005] 2. The size of the steering mechanism is too large, and the distance from the pivot point to the front wheel is large, resulting in a large working channel for the final vehicle;

[0006] 3. Inaccurate steering range control;

[0007] 4. The steering cannot be locked, and the current steering state cannot be maintained

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