Airplane dragging device based on digital hydraulic motor

Abstract

The invention relates to an aircraft dragging device based on a digital hydraulic motor, which belongs to the technical field of aircraft dragging devices and comprises an aircraft wheel spindle and a controller. The two ends of the aircraft wheel main shaft are rotationally connected with a first aircraft wheel and a second aircraft wheel respectively; the first aircraft wheel is connected with a first digital hydraulic motor; the second aircraft wheel is connected with a second digital hydraulic motor; the first digital hydraulic motor is connected with a first hydraulic system, and the second digital hydraulic motor is connected with a second hydraulic system. The aircraft has the beneficial effects that the digital hydraulic motor is additionally arranged on the undercarriage of the aircraft, and the aircraft wheels are driven to rotate through the digital hydraulic motor, so that the aircraft is dragged to slide on the ground, the oil consumption of an aircraft engine before the aircraft takes off and after the aircraft lands can be saved, the service life of the engine is prolonged, and the passenger transport cost is reduced; differential turning of aircraft wheels can be achieved, the hydraulic system can use an airborne hydraulic source as power input, the weight and the size of an aircraft do not need to be excessively increased, and the safety and the reliability of the aircraft are greatly improved.

Description

technical field [0001] The present disclosure relates to the technical field of aircraft towing devices, in particular to an aircraft towing device based on a digital hydraulic motor. Background technique [0002] With the continuous development of passenger aircraft technology, fuel consumption has become an important indicator of passenger aircraft, and the world's demand for energy saving and emission reduction is also increasing. Among them, the fuel consumption rate of aircraft take-off, landing and cruising has reached the technical bottleneck. The improvement of energy saving is limited, but there is a long time of no-load operation in the taxiing phase on the ground before the aircraft takes off, most of which are due to the taxiing phase at the airport during takeoff and landing, because the aircraft wheels have no power. [0003] There are two main types of power for an aircraft to walk on the ground. One is that the main engine of the aircraft starts to push the a...

AI Technical Summary

Problems solved by technology

Although the purpose is achieved by using the motor drive, due to the shortcomings of the motor itself, there are certain defects in the reliability and stability of the entire system.

Because the motor works in a high-power environment, the load on the motor is very heavy, and it has the disadvantages of volume, heat dissipation and low reliability. It is often necessary to place the heat dissipation device of the motor in the landing gear compartment, which not only affects the overall structure of the landing gear Space presents a challenge and also adds significantly to the weight of the landing gear

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