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A redundant all-electric actuating device based on cascading planetary roller screw pair

A planetary roller and actuating device technology, applied in the field of aircraft servo drive control and power telex, can solve problems such as poor fault tolerance, stuck, mechanical stuck, etc., to improve system reliability, prevent in-position impact and transmission Parts are unscrewed to achieve the effect of electrical three-redundancy control

Active Publication Date: 2020-10-13
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with the traditional centralized hydraulic servo actuating device and electrostatic hydraulic actuating device, the all-electric actuating device has the advantages of simple structure, high power-to-weight ratio, and small installation space. Limits the application of all-electric actuators to a certain extent
[0003] The current all-electric actuation device has problems such as poor fault tolerance, mechanical stagnation, and jamming, which makes it difficult to guarantee the reliability of the flight control system

Method used

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  • A redundant all-electric actuating device based on cascading planetary roller screw pair
  • A redundant all-electric actuating device based on cascading planetary roller screw pair
  • A redundant all-electric actuating device based on cascading planetary roller screw pair

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Embodiment Construction

[0030] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0031] The purpose of the present invention is to overcome the deficiencies in the existing structure, and to provide a redundant all-electric actuating device based on a cascaded planetary roller screw pair, which can solve the phenomenon of mechanical stagnation and jamming. Servo drive control of the rudder surface.

[0032] refer to Figure 1 to Figure 8 , a redundant all-electric actuating device based on a cascaded planetary roller screw pair, comprising: a first-stage planetary roller screw assembly (1), a first-stage lead screw (1-1), a first-stage rolling Vice (1-2), first-level limit block (1-3); first-level buffer assembly (2), first-level buffer ring 1 (2-1), first-level buffer ring 2 (2-2), first-level Buffer ring 3 (2-3), primary buffer ring 4 (2-4), small thrust bearing (2-5), small back tightening nut (2-6); secondary planetary...

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Abstract

The invention relates to a multi-redundancy all-electric actuating device based on a cascaded planetary roller screw pair, which comprises a planetary roller screw pair assembly, a redundant actuatingassembly, a hollow transmission shaft, a buffer assembly, a mounting shell, motors and the like. The hollow transmission shaft is installed on the mounting shell, the main motor and the auxiliary motor are installed on the mounting shell, and the hollow transmission shaft is driven by a gear to rotate. The two-stage roller screw pair forms a cascaded planetary roller screw pair, and when a certain stage of the screw pair is blocked, the other stage of the screw pair can still realize transmission; a worm gear of the redundant actuating assembly is fixedly connected with the tail end of the first-stage lead screw, and when the main motor and the auxiliary motor break down at the same time, the redundant actuating assembly drives the first-stage lead screw to rotate, and linear output of the system is achieved; the buffer ring is installed between a thrust bearing and a back tightening nut and used for relieving in-place impact of the hollow transmission shaft and the first-stage lead screw. Mechanical clamping stagnation and jamming of the control surface servo driving system can be prevented, multi-redundancy all-electric driving is achieved, and the reliability of the system is improved.

Description

technical field [0001] The invention relates to a redundant all-electric actuating device, in particular to a redundant all-electric actuating device based on a cascaded planetary roller screw pair, and belongs to the field of power transmission and aircraft servo drive control. Background technique [0002] With the development requirements of all-electric aircraft, all-electric actuators have gradually received more attention. Compared with the traditional centralized hydraulic servo actuating device and electrostatic hydraulic actuating device, the all-electric actuating device has the advantages of simple structure, high power-to-weight ratio, and small installation space. To a certain extent, the application of all-electric actuators is limited. [0003] The current all-electric actuation device has problems such as poor fault tolerance, mechanical stagnation, and jamming, which makes it difficult to guarantee the reliability of the flight control system. Therefore, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K7/06H02K7/116F16H25/22F16H57/028
CPCF16H25/2247F16H57/028H02K7/06H02K7/116
Inventor 付永领张文森郑世成付剑张朋李林杰
Owner BEIHANG UNIV
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