Axial force eliminating mechanism of direct-connection steering engine

A technology directly connected to the steering gear and axial force, which is applied in the aerospace field and can solve problems such as damage to the steering gear and poor resistance to axial force

Active Publication Date: 2020-01-17
BEIJING SPACE TECH RES & TEST CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its anti-axial force performance is poor, and the steering gear may be damaged when the axial force is too large

Method used

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  • Axial force eliminating mechanism of direct-connection steering engine
  • Axial force eliminating mechanism of direct-connection steering engine

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Experimental program
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Effect test

Embodiment approach

[0028] According to one embodiment of the present invention, the front end of the shaft body 31 (the left end in the figure) is provided with threads, the first mounting hole 231 on the first arc frame 23 is provided with internal threads, and the shaft body 31 is connected with the first mounting hole 231 Thread fit connection. In this way, the connection strength is ensured, and at the same time, the axial stress is prevented from being well transmitted to the stress transfer frame 2 due to the gap.

[0029] According to an embodiment of the present invention, along the direction from the second installation hole 241 to the first installation hole 231 , the outer diameter of the shaft body 31 decreases gradually. At the same time, the diameters of the second mounting hole 241 , the radial through hole 11 and the first mounting hole 231 are also sequentially reduced. That is, the outer peripheral surface of the connecting shaft is a tapered surface, which can further ensure ...

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PUM

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Abstract

The invention relates to an axial force eliminating mechanism of a direct-connection steering engine. The mechanism is installed on a rudder shaft (1) and comprises a stress transfer frame (2) and a connecting shaft (3), and the stress transfer frame (2) comprises a first connecting end (21), a second connecting end (22), a first arc-shaped frame (23) and a second arc-shaped frame (24), wherein the first connecting end and the second connecting end are oppositely arranged; the first arc-shaped frame and the second arc-shaped frame are connected with the first connecting end (21) and the secondconnecting end (22) respectively and arranged oppositely; the first connecting end (21) and the second connecting end (22) are fixedly connected with a rudder shaft (1), a radial through hole (11) matched with the connecting shaft (3) is formed in the rudder shaft (1), and the connecting shaft (3) penetrates through the radial through hole (11) to be connected with the first arc-shaped frame (23)and the second arc-shaped frame (24). According to the axial eliminating mechanism of the direct-connection steering engine, the axial force of the rudder shaft can be transferred, and the adverse effect of the axial direction on the steering engine is avoided.

Description

technical field [0001] The invention relates to the field of aerospace technology, in particular to a direct-connected steering gear axial force elimination mechanism. Background technique [0002] There are usually two ways to connect the rotation axis (rudder shaft) of the aircraft rudder surface (such as aileron, rudder, elevator, etc.) to the steering gear. The first way is that the steering gear drives the rudder shaft through the hinge rocker mechanism. In this method, the output shaft of the steering gear and the rudder shaft are not coaxial, and are connected through a hinged rocker structure to realize the drive of the rudder surface. The advantage of this connection method is that it can avoid the axial force on the rudder shaft from being transmitted to the steering gear. The disadvantage is that the connection structure is complex, which brings problems of large connection gap (the hinge needs clearance fit for movement) and low connection stiffness. cause adve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C13/24
CPCB64C13/24
Inventor 乔宇航刘昶秀陈冲王开强陈润峰
Owner BEIJING SPACE TECH RES & TEST CENT
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