An electronically controlled unloadable wheel retracting device and control method

Abstract

The invention provides an electronically controlled unloadable wheel retracting device, comprising a lower cross arm, a transmission short shaft, a torsion bar spring, a wheel retracting and retracting actuator, an electromagnetic unloading mechanism and a sliding spline sleeve; the lower cross arm and the transmission The stub shaft is fixedly connected; the transmission stub shaft and the torsion bar spring are coaxially arranged, and the two can be connected by a sliding spline sleeve; the wheel retractable actuator is arranged on the transmission stub shaft and is used as the sliding spline sleeve shaft When the sliding is disconnected from the torsion bar spring, and connected with the wheel retractable actuator, it drives the transmission short shaft, the suspension and the wheel to lift; the electromagnetic unloading mechanism is connected with the sliding spline sleeve to complete the sliding spline sleeve. Axial sliding of the key sleeve. The invention adopts the combination of an electromagnetic unloading mechanism and a wheel retracting actuator, which can quickly respond and completely remove the load exerted by the suspension elastic and damping elements on the wheel retracting device during the wheel retracting process.

Description

technical field [0001] The invention belongs to the field of amphibious working condition switching equipment for wheeled amphibious vehicles, and particularly relates to an electronically controlled unloadable wheel retracting device and a control method. Background technique [0002] An amphibious vehicle is a special vehicle that has the characteristics of both a vehicle and a boat, and can run on land and float on water. Because of its excellent water and land traffic performance, it can quickly switch between land and water conditions without being restricted by roads, bridges, rivers, lakes, seas and other waters. Professional fields such as transportation have outstanding advantages and special historical significance. [0003] Wheeled amphibious vehicles are driven by wheels on land, which can be driven directly by wheels, or driven by special water propellers (propellers or water jets). The structure is simple, but the water speed and maneuverability are poor. In ...

AI Technical Summary

Problems solved by technology

[0008] In terms of control, most of the existing amphibious vehicle wheel retractable devices adopt hydraulic control or mechanical structure control. Due to the hysteresis of the hydraulic system and the assembly gap of the mechanical structure, the response of the control system to control operations and commands is not timely enough, which increases the overall The time required to complete the wheel retraction action; the control accuracy is low, and the lifting height of the suspension cannot be guaranteed to be constant and the wheel positioning parameters are within a reasonable range

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