Independent steering device for four wheels of aircraft traction truck

Abstract

The invention provides an independent steering device for four wheels of an aircraft traction truck. The independent steering device mainly comprises an axle, a steering oil cylinder, a proportion control valve and related electric control units. In the steering system, four oil cylinders respectively control the four wheels, the steering angle of each wheel in various steering modes can be accurately controlled through the electric control units so as to ensure that the steering centers of all wheels are coincident at the same point, the friction loss of power can be furthest reduced, the resource utilization rate can be improved, the steering wear of tires can be reduced and the service life of the tire can be prolonged.

Description

Technical field: [0001] The invention and the field of special equipment for airport ground handling, in particular, relate to a four-wheel independent steering device for controlling an aircraft tractor. Background technique: [0002] The aircraft tractor is a ground support device used to assist the movement of the aircraft on the ground of the airport. It pushes or tows the aircraft through the towbar with its own strong traction. Due to the high requirements for traction stability and the narrow working environment, higher requirements are placed on the steering of aircraft tractors. [0003] The traditional aircraft tractor steering adopts road vehicle axles, so that when the aircraft tractor is making ordinary steering, the steering trapezoid of the axle will play a role to ensure the vehicle's steering center and reduce tire wear. However, when the crab steering is specially required for aircraft tractors, the steering rod limits the inclination angle of the wheels, ...

AI Technical Summary

Problems solved by technology

However, when the crab steering is specially required for aircraft tractors, the steering rod limits the inclination angle of the wheels, resulting in inconsistent inclination angles of the wheels. In the process of forming, there will be huge lateral friction on the wheels, resulting in serious grinding of the wheels, which not only increases the It not only reduces the operating cost of the vehicle, but also has serious safety hazards.

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