Electric worm-gear airplane braking system and method for operating braking system

A worm gear, electric brake technology, applied in aircraft braking arrangements, vehicle components, brakes, etc., can solve problems such as far away, and achieve the effects of reducing weight, fast response, and saving space occupancy.

Active Publication Date: 2015-06-03
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the design of the actual brake mechanism and the ground test of the

Method used

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  • Electric worm-gear airplane braking system and method for operating braking system
  • Electric worm-gear airplane braking system and method for operating braking system
  • Electric worm-gear airplane braking system and method for operating braking system

Examples

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Example Embodiment

[0026] Full electric brake system with worm gear actuation as attached figure 1 , 2 , 3, 4, 5, and 6. The working principle of the fully electric brake system with worm gear actuation will be explained here.

[0027] The working principle of the fully electric brake system with worm gear and worm actuation is:

[0028] (a) When the aircraft wheel receives the braking command, the motor 2 starts, the rotor rotates, the worm 5 is driven to rotate through the coupling 4, the worm 5 rotates to drive the worm wheel 3 to rotate, and the worm wheel 3 drives the ball screw 7 connected to it. Rotating together, the nut 6 on the ball screw is fixedly connected with the outer cylinder 8 of the screw nut. Since the outer cylinder 8 is restricted by the square groove opened on the electric actuator support cover 10, the outer cylinder 8 does not have any direction around the axis of the ball screw. The degree of freedom of rotation, so the ball nut 6 and the outer cylinder 8 can only mo...

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Abstract

The invention discloses an electric worm-gear airplane braking system and a method for operating the braking system, and relates to the field of the braking system and operating method. The braking system comprises an electric actuator, wheel axles, a support cover, a pressure sensor, a brake disc, airplane wheels and a revolution speed transducer, wherein the electric actuator comprises an actuator casing, a motor, a coupling shaft, worms, worm gears, a ball screw, ball nuts and an outer cylinder, and the worms and the worm gears are in the engaging transmission state; the revolution speed transducer is connected with the wheel axles through a revolution speed transducer installation shaft. An electric actuation and worm-gear transmission way is applied to the braking system, so that the complexity of the mechanism is reduced, the weight of the mechanism is alleviated, the braking system can offer the possibility to a dual-redundancy design idea; besides the installing problems of the pressure sensor and the revolution speed transducer are considered, the double-feedback control system with pressure and rotation speed closed loops can be realized and efficiency and reliability of the braking system are improved.

Description

technical field [0001] The invention relates to the field of braking systems and working methods, in particular to a worm gear and worm type aircraft electric braking system and working methods. technical background [0002] With the continuous development of the fly-by-wire control system and the technical progress of the electronic drive device, the design idea of ​​"more electric or all electric" is gradually applied to the aircraft design. Traditional aircraft generally use hydraulic brake mechanisms, and the advantages of all-electric brake mechanisms are that they are safer, will not cause fires caused by hydraulic oil leakage, reduce environmental pollution, save energy, have less heat generation, less wear and tear on components, and are more reliable. increase, weight decrease. [0003] The research and application of electric brakes in foreign countries started earlier than domestic ones. Although the technology is mature, in the very few published patents and doc...

Claims

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Application Information

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IPC IPC(8): B64C25/42B60T13/74
Inventor 聂宏尹乔之王永全魏小辉邓健
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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