Differential type power-assisted steering handle device for industrial vehicle

Abstract

The invention relates to a steering operation control device for an industrial vehicle, in particular to a differential type power-assisted steering handle device for the industrial vehicle. The differential type power-assisted steering handle device for the industrial vehicle comprises a handle steering shaft, a driving steering shaft in linkage with a driving wheel and is capable of relatively rotating with the handle steering shaft. The handle device further comprises a feedback part capable of producing changes an operator can sense due to relative rotation of the handle steering shaft and the driving steering shaft, and the change range of the feedback part is controlled by the relative rotation range of the handle steering shaft and the driving steering shaft. The differential type power-assisted steering handle device for the industrial vehicle can avoid the phenomenon of declination in steering judgment when an operator takes a sudden turn, and cost is low.

Description

technical field [0001] The invention relates to a steering operation control device for an industrial vehicle, in particular to a differential power steering handle device for an industrial vehicle. Background technique [0002] The steering mode of industrial vehicles in the prior art generally adopts electronic steering, such as a forklift electronic steering device disclosed in a utility model patent with the authorized announcement number CN201457457U, which includes a stepping motor, an electric power steering assembly, a controller, a Position sensor, proximity switch, display, AC servo motor, the rotating shaft where the direction handwheel is located is coaxially connected with the stepper motor, the stepper motor is connected with the signal of the electric power steering assembly controller, and the limit sensor and proximity switch are arranged side by side Set on both sides of the steering wheel and connected with the signal of the electric power steering assembl...

AI Technical Summary

Problems solved by technology

[0009] Through the setting of the feedback member, even when the operator makes a sharp turn, that is, when the steering operation time is shorter than the motor steering time, the operator can judge whether the drive is driven by feeling the change of the feedback member due to the relative rotation of the steering shaft of the handle and the steering shaft of the drive. The corresponding angle has been turned, so as to solve the phenomenon that the actual steering trajectory of the vehicle does not match the operator's estimate when the steering operation time in the prior art is less than the motor steering time; And the steering motor puts forward higher requirements, it is only to improve the device directly operated by the operator, so the cost is low

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