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A pre-tightening anti-backlash transmission device

A transmission device and anti-backlash technology, which is applied to transmission devices, belts/chains/gears, mechanical equipment, etc., can solve problems such as failure to meet control requirements, and achieve the effects of improving assembly processability, convenient installation, and strengthening gap control

Active Publication Date: 2018-08-28
SHANGHAI AEROSPACE CONTROL TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the transmission method mainly adopts the screw rocker mechanism, and the gap between the opening groove of the rocker arm and the screw nut will change significantly with the rotation of the screw, which cannot meet the control requirements in a hypersonic environment

Method used

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  • A pre-tightening anti-backlash transmission device
  • A pre-tightening anti-backlash transmission device
  • A pre-tightening anti-backlash transmission device

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Experimental program
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Embodiment Construction

[0015] Such as Figure 1-3 As shown, a pre-tightening and anti-backlash transmission device includes an output shaft 10, a rocker arm 21, a ball screw 31, a nut 32, and a fastening bolt 41; the ball screw 31 and the nut 32 are mated and connected, and the A driving rod 33 is fixedly arranged on the screw nut 32; the output shaft 10 is rigidly connected to the rocker arm 21, and one end of the rocking arm 21 is provided with an open slot 22, and the driving rod 33 is placed in the open slot 22 along the In the groove width direction of the opening groove 22, the opening groove 22 is provided with a threaded hole, and the fastening bolt 41 passes through the threaded hole to close the opening groove 22, and at the same time, the driving rod 33 is fixed in the closed position. In the open slot 22 of the opening; the driving device drives the ball screw 31 to rotate, and the nut 32 makes a reciprocating linear motion on the ball screw 31, and drives the rocker arm 21 to swing thro...

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Abstract

Disclosed is a pretightening clearance eliminating transmission device. The pretightening clearance eliminating transmission device comprises an output shaft, a rocker, a screw rod, a nut and a fastening bolt. The screw rod and the nut are in matched connection. A poking rod is fixedly arranged on the nut. The output shaft and the rocker are in rigid connection. One end of the rocker is provided with an open groove. The poking rod is arranged in the open groove. The open groove is provided with a threaded hole in the groove width direction of the open groove. The fastening bolt penetrates through the threaded hole to close the open groove and fix the poking rod in the closed open groove. A driving device drives the screw rod to rotate. The nut does reciprocating rectilinear motion on the screw rod, the rocker is driven by the poking rod to swing, and then the output shaft is driven to swing. The pretightening clearance eliminating transmission device is convenient to install, clearance control precision is high, and non-clearance transmission can be achieved.

Description

technical field [0001] The invention relates to a mechanism for controlling transmission gaps in the field of hypersonic aircraft, in particular to a pre-tightening and anti-backlash transmission device for electric steering gear control mechanisms in hypersonic aircraft. Background technique [0002] Under the condition of hypersonic flight, the load on the rudder surface increases, the flight distance per unit time increases, and the response time for the control mechanism decreases. Therefore, it is necessary to improve the control accuracy of the aircraft. To improve the control accuracy, it is necessary to reduce the transmission gap, especially to reduce the transmission gap under load conditions. In the prior art, the transmission method mainly adopts the screw rocker mechanism, and the gap between the opening groove of the rocker arm and the screw nut will change significantly with the rotation of the screw, which cannot meet the control requirements in a hypersonic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H25/20
CPCF16H25/2003
Inventor 奚勇唐德佳陶键刘一张纪林
Owner SHANGHAI AEROSPACE CONTROL TECH INST