Electronically controlled steering device for forklift

Abstract

The invention discloses an electronically controlled steering device for a forklift, which is low in cost and power consumption, and consists of a steering handle (1), a steering shaft (3), direction wheels (4), a directional wheel axle (15), a DC motor (7), a steering controller (6) connected with a DC power supply on the forklift, a gearbox (9), a first transmission mechanism, a second transmission mechanism, a first sensor (5), a second sensor (8) and a third sensor (10), wherein the first sensor (5) is fixed on a vehicle body of the forklift and is connected with the lower part of the steering shaft (3) through the second transmission mechanism; the second sensor (8) is fixed on the DC motor (7) and is fixedly connected with a rotating shaft (7.1); the third sensor (10) is arranged between the vehicle body of the forklift and the second transmission mechanism; and the first sensor (5), the DC motor (7), the second sensor (8) and the third sensor (10) are all electrically connected with the steering controller (6).

Description

technical field [0001] The invention relates to an electronic control device for steering operation of a vehicle, in particular to an electronically controlled steering device for a forklift. Background technique [0002] With the continuous improvement of industrial automation, people put forward higher requirements for the comfort, safety and reliability of vehicle driving. This is especially true for some transport vehicles. Since the goods to be transported by these vehicles are relatively heavy, if it is realized only by operating the mechanical steering structure, it will not only be laborious, but also when driving on a bumpy road, the operating handle is easy to shake from side to side. It makes the vehicle difficult to control. [0003] An article titled Application of Electronic Power Steering Control Devices in Electric Forklifts was published in the Journal of Chinese Mechanical Engineers. The steering device consists of steering wheel, stepper motor, AC steerin...

AI Technical Summary

Problems solved by technology

[0004] 1. Since the existing electric forklift is powered by a DC power supply, but the steering control device uses an AC power supply such as an AC motor or a three-phase induction motor, the existing steering control device needs to use an inverter to convert DC power into AC power. Reuse, due to the large loss of the inverter, this not only increases the power consumption of the steering control device to a certain extent, but also increases the cost of the steering control device to a certain extent

[0005] 2. Since the existing steering control device is composed of a stepper motor, an AC steering controller, a three-phase induction motor, a corner position sensor, an AC drive motor, etc., and the motor (such as a stepper motor) is used as a sensor, further increase the cost of the steering control unit

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