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Multistage-transmission speed-reduction clearance-elimination gear box for airplanes and clearance-elimination method

A technology of gearboxes and driven gears, which is applied to transmission parts, belts/chains/gears, mechanical equipment, etc. It can solve problems such as large gaps and large nonlinear manipulation, and achieve the effects of saving space and strong transmission stability

Pending Publication Date: 2020-04-24
ZHONGHANG ELECTRONICS MEASURING INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the gap in the gear transmission, the steering wheel roll control aileron deceleration mechanism of a certain type of transport aircraft has problems such as large control nonlinearity and large gap. When the traditional spring adjustment method and other flexible anti-backlash methods are used for gear backlash elimination, the spring tension must Maximum torque, otherwise it will lose the effect of eliminating gaps and other problems

Method used

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  • Multistage-transmission speed-reduction clearance-elimination gear box for airplanes and clearance-elimination method
  • Multistage-transmission speed-reduction clearance-elimination gear box for airplanes and clearance-elimination method
  • Multistage-transmission speed-reduction clearance-elimination gear box for airplanes and clearance-elimination method

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Embodiment 1

[0040] like figure 1 and figure 2 As shown, the present invention is a multi-stage transmission deceleration anti-backlash gear box for aircraft, comprising driving gear 5, intermediate gear set, driven gear set, gear box body 1, deep groove ball bearing 4, first hexagon head bolt 3. Anti-backlash block 7. The driven gear set includes: driven gear thin gear 6-a and driven gear thin gear shaft 6-b; the intermediate gear set includes: intermediate gear thin gear 2-a and intermediate gear thin gear shaft 2-b; driving gear 5 , the intermediate gear set and the driven gear set are arranged inside the gear box body 1, the driving gear 5 meshes with the intermediate gear set, and the intermediate gear set meshes with the driven gear set. The driving gear is a thick gear, and the intermediate gear set and the driven gear set are composed of two thin gears with the same number of teeth and tooth width. The tooth width of the thin gear is about 1 / 2 of the tooth width of the thick gea...

Embodiment 2

[0044] A two-stage transmission anti-backlash gear compensation mechanism for aircraft: the driving gear 5 is a thick gear with a tooth width of 30 mm, the intermediate gear set is composed of two thin gears with the same number of teeth, and the tooth width is 15 mm, and the driven gear set is composed of two thin gears with the same number of teeth. Composed of two thin gears, the tooth width is 13mm; the driving gear 5 is a one-piece spur gear, the driving gear 5 meshes with the intermediate gear set, and the intermediate gear set meshes with the driven gear set. One of the thin gears is set on the shaft integrated with the other thin gear, and can perform relative rotation. The driven gear thin gear 6-a and the driven gear thin gear shaft 6-b of the driven gear set are sector gears . A piece of thin gear in the driven gear set has a rectangular notch in the hub web, the rectangular notch is vertically and radially arranged in the middle of the web, one side of the rectangu...

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Abstract

The invention relates to a multistage-transmission speed-reduction clearance-elimination gear box for airplanes. The gear box comprises a gear box body, a clearance-elimination cushion block, bolts, nuts, a driving gear, an intermediate gear set and a driven gear set, wherein the driving gear, the intermediate gear set and the driven gear set are sequentially meshed for transmission; the driven gear set comprises a driven gear thin gear and a driven gear thin gear shaft; the driven gear thin gear sleeves the driven gear thin gear shaft; a rectangular notch is formed in a hub web plate of the driven gear thin gear; a lug is arranged on a web plate of the driven gear thin gear thin gear shaft; the driven gear thin gear passes through the rectangular notch, one side of the lug is arranged ina gap with the rectangular notch, and the other side is pressed against the clearance-elimination cushion block embedded in the rectangular notch; a contact surface of the clearance-elimination cushion block with the rectangular notch is arranged to be an inclined surface flaring outwards; and the bolts penetrate through the clearance-elimination cushion block and the driven gear thin gear shaft and are pressed against the nuts. The invention relates to a clearance elimination method of the multistage-transmission speed-reduction clearance-elimination gear box for airplanes, and tooth staggering clearance is adjusted by screwing nuts for a plurality of times, so that operation is convenient, the structure is simple, and maintenance is convenient.

Description

technical field [0001] The invention relates to the technical field of gear transmission anti-backlash, in particular to a multi-stage transmission deceleration and anti-backlash gear box for aircraft and an anti-backlash method. Background technique [0002] The flight control system is an important functional system of the aircraft. In the rigid mechanical control system, the hand control mechanism is used as the pilot's control device to control the corresponding rudder surface of the aircraft to achieve the pitch, roll, and yaw movements of the aircraft. Due to the gap in the gear transmission, the steering wheel roll control aileron deceleration mechanism of a certain type of transport aircraft has problems such as large control nonlinearity and large gap. When the traditional spring adjustment method and other flexible anti-backlash methods are used for gear backlash elimination, the spring tension must The maximum torque, otherwise it will lose the effect of eliminati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/06F16H55/08F16H57/032F16H57/12
CPCF16H57/12F16H57/032F16H55/06F16H55/0806
Inventor 石荣武张明刘凤凯刘建贾恒信
Owner ZHONGHANG ELECTRONICS MEASURING INSTR
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