CN111059251A - Multi-stage transmission speed reduction anti-backlash gear box for airplane and anti-backlash method - Google Patents
Multi-stage transmission speed reduction anti-backlash gear box for airplane and anti-backlash method Download PDFInfo
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- CN111059251A CN111059251A CN202010023690.8A CN202010023690A CN111059251A CN 111059251 A CN111059251 A CN 111059251A CN 202010023690 A CN202010023690 A CN 202010023690A CN 111059251 A CN111059251 A CN 111059251A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 32
- 230000009467 reduction Effects 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000008030 elimination Effects 0.000 claims abstract description 10
- 238000003379 elimination reaction Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 10
- 210000000078 claw Anatomy 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/08—Profiling
- F16H55/0806—Involute profile
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/032—Gearboxes; Mounting gearing therein characterised by the materials used
Abstract
The invention relates to a multistage transmission speed reduction anti-backlash gear box for an airplane, which comprises: the gear box body, the anti-backlash cushion block, the bolt, the nut, and a driving gear, a middle gear set and a driven gear set which are sequentially meshed and driven; the driven gear set comprises a driven gear thin gear and a driven gear thin gear shaft; the driven gear thin gear is sleeved on the shaft of the driven gear thin gear shaft; a rectangular notch is formed in a hub web plate of the driven gear thin gear; a web plate of the driven gear thin gear shaft is provided with a lug; the lug penetrates through the rectangular notch, one side of the lug is arranged in a clearance with the rectangular notch, and the other side of the lug is tightly propped against the clearance elimination cushion block embedded into the rectangular notch; the contact surface of the anti-backlash cushion block and the rectangular notch is an inclined plane with an outward flaring; and the bolt penetrates through the anti-backlash cushion block and the driven gear thin gear shaft to be connected and pressed with the nut. A clearance eliminating method of a multistage transmission speed reduction clearance eliminating gear box for an airplane is convenient to operate, simple in structure and convenient to maintain.
Description
Technical Field
The invention relates to the technical field of gear transmission clearance elimination, in particular to a multistage transmission speed reduction clearance elimination gear box for an airplane and a clearance elimination method.
Background
The flight control system is an important functional system of the airplane, and in the hard mechanical control system, a hand control mechanism is used as a pilot control device for controlling the corresponding control surface of the airplane to realize pitching, rolling and yawing motions of the airplane. The gear transmission has a gap, so that the problems of large operation nonlinearity, large gap and the like exist in a transverse rolling operation aileron speed reducing mechanism of a certain type of transport plane steering wheel, and when the gear gap elimination is carried out by a flexible gap elimination method such as a traditional spring adjustment method and the like, the maximum torque must be overcome by the spring tension, otherwise, the gap elimination function is lost, and the like.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a multistage transmission speed reduction anti-backlash gear box for an airplane and an anti-backlash method.
The invention is realized by the following technical scheme:
a multi-stage transmission speed reduction anti-backlash gearbox for an aircraft, comprising: the gear box body, the anti-backlash cushion block, the bolt, the nut, and a driving gear, a middle gear set and a driven gear set which are sequentially meshed and driven;
the driving gear, the intermediate gear set and the driven gear set are arranged in the gear box body;
the intermediate gear set comprises an intermediate gear thin gear and an intermediate gear thin gear shaft with the gears integrated with the shaft; the intermediate gear thin gear is sleeved on a shaft of the intermediate gear thin gear shaft;
the driven gear set comprises a driven gear thin gear and a driven gear thin gear shaft with a gear and a shaft integrated; the driven gear thin gear is sleeved on the shaft of the driven gear thin gear shaft;
a rectangular notch is formed in a hub web plate of the driven gear thin gear; a web plate of the driven gear thin gear shaft is provided with a lug; the lug penetrates through the rectangular notch, one side of the lug is arranged in a clearance with the rectangular notch, and the other side of the lug is tightly propped against the clearance elimination cushion block embedded into the rectangular notch; the contact surface of the anti-backlash cushion block and the rectangular notch is an inclined plane with an outward flaring;
the bolt penetrates through the anti-backlash cushion block and the driven gear thin gear shaft to be connected and pressed with the nut, and is used for enabling the upper thin gear and the lower thin gear of the driven gear set to be staggered, so that the upper thin gear and the lower thin gear of the intermediate gear set are driven to be staggered, and the left tooth surface and the right tooth surface of the upper thin gear and the lower thin gear of the intermediate gear set are respectively clung to the left tooth.
Preferably, the gear box body and the anti-backlash cushion block are made of hard aluminum alloy.
Preferably, the gear material is high-strength stainless steel.
Preferably, the driven gear thin gear and the driven gear thin gear shaft of the driven gear set are sector gears.
Preferably, the rectangular notch is vertically and radially arranged in the middle of the hub web of the driven gear thin gear.
Preferably, the thin gear tooth width of the intermediate gear set and the driven gear set is 1/2 of the driving gear tooth width.
Preferably, the bolt and the nut are arranged in pairs, and the bolt and the nut are arranged in a plurality of pairs.
Furthermore, the bolt is a second hexagon head bolt, the angle-shaped duplex stop washer is arranged below the bolt head of the second hexagon head bolt, and the fixing claw of the angle-shaped duplex stop washer is fixed on the hexahedron of the bolt head.
A backlash eliminating method for a multistage transmission speed-reducing backlash eliminating gearbox for an airplane is based on any one of the above multistage transmission speed-reducing backlash eliminating gearbox for the airplane, and comprises the following steps,
step 1: sleeving a middle gear set and a driven gear set respectively, assembling a driving gear to be meshed with the middle gear set, and meshing the middle gear set with the driven gear set;
step 2: a gap eliminating cushion block is placed in a rectangular notch of the driven gear thin gear and connected through a bolt;
and step 3: screwing the nut, screwing pressure to force the conical surface of the anti-backlash cushion block to interact with the conical surface of the rectangular notch, and ejecting the other end surface of the anti-backlash cushion block to the lug, so that the tooth surfaces of the driven gear thin gear and the driven gear thin gear shaft in the driven gear set are staggered, and the left tooth surface and the right tooth surface of the two thin gears are respectively clung to the left tooth surface and the right tooth surface of the intermediate gear thin gear and the intermediate gear thin gear shaft of the intermediate gear set;
and 4, step 4: and then the nut is continuously screwed, and the left and right tooth surfaces of the intermediate gear thin gear on the intermediate gear and the intermediate gear thin gear shaft are also dislocated and respectively cling to the left and right tooth surfaces of the driving gear.
Preferably, step 1 further comprises fixing the fixing claws of the angular double lock washer to the second hexagon head bolt hexahedron before tightening the nut.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a multistage transmission speed reduction anti-backlash gear box for an airplane, which adopts a conical surface positioning principle, achieves the purpose of anti-backlash by adjusting the dislocation of two thin gears through a bolt by matching an anti-backlash cushion block with a conical surface of a rectangular notch, has the advantages of simple structure, small transmission stability, small operation nonlinearity, small backlash friction force, higher transmission rigidity, reasonable arrangement and low manufacturing cost, and can realize the compensation of anti-backlash gears at different temperatures.
Furthermore, the gear box body and the anti-backlash cushion block are made of hard aluminum alloy. The length sizes of the gear box body and the anti-backlash cushion block are correspondingly increased or reduced at different temperatures, so that the gap compensation of the speed-reducing anti-backlash gear with the structure at different temperatures is realized.
Furthermore, the gear is made of high-strength stainless steel, so that the gap generated by the increase or reduction of the center distance of the two thin gear dislocation compensation gears is ensured, and the gap eliminating effect is ensured.
Furthermore, the thin gear tooth width of the intermediate gear set and the driven gear set is 1/2 of the tooth width of the driving gear, so that the space is saved, and the transmission stability is strong.
Furthermore, the bolt and the nut are not less than one pair, the bolt is a hexagon head bolt, the nut is a hexagon self-locking nut, the connection stability is improved by increasing the number of the bolts, and the pressing force of the anti-backlash cushion block is increased.
Furthermore, the bolt is a second hexagon head bolt, the angle-shaped duplex stop washer is arranged below the bolt head of the second hexagon head bolt, and the fixing claw of the angle-shaped duplex stop washer is fixed on the hexahedron of the bolt head. And an angular duplex stop washer is adopted to prevent the bolt from loosening.
The invention provides a backlash eliminating method of a multistage transmission speed reduction backlash eliminating gear box for an airplane, which adjusts the staggered tooth clearance by screwing a nut for multiple times, and has the advantages of simple operation, convenient assembly, simple structure, easy guarantee of precision and convenient maintenance.
Further, before still screwing up the nut, fix hexagonal head bolt hexahedron with the stationary dog of angular form duplex lock washer on, play locking effect through stationary dog fixing bolt, at the nut in-process of screwing up, the bolt can not produce relative rotation, and bolt locking is convenient.
Drawings
FIG. 1 is a top view of a multi-stage transmission speed reduction anti-backlash gearbox for an aircraft according to the present invention;
FIG. 2 is a front cross-sectional view of the multi-stage transmission reduction anti-backlash gearbox for an aircraft of the present invention;
FIG. 3 is a top view of the backlash compensation structure of the driven gear of the present invention;
fig. 4 is a front sectional view of the backlash elimination compensation structure of the driven gear of the present invention.
In the figure: the gear box comprises a gear box body 1, a middle gear thin gear 2-a, a middle gear thin gear shaft 2-b, a first hexagon head bolt 3, a deep groove ball bearing 4, a driving gear 5, a driven gear thin gear 6-a, a driven gear thin gear shaft 6-b, an anti-backlash cushion block 7, a second hexagon head bolt 8, an angular duplex lock washer 9 and a hexagon self-locking nut 10.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The first embodiment is as follows:
as shown in fig. 1 and 2, the invention relates to a multistage transmission speed reduction anti-backlash gear box for an airplane, which comprises a driving gear 5, a middle gear set, a driven gear set, a gear box body 1, a deep groove ball bearing 4, a first hexagon head bolt 3 and an anti-backlash cushion block 7. The driven gear set includes: a driven gear thin gear 6-a and a driven gear thin gear shaft 6-b; the intermediate gear set includes: an intermediate gear thin gear 2-a and an intermediate gear thin gear shaft 2-b; the driving gear 5, the intermediate gear set and the driven gear set are arranged inside the gear box body 1, the driving gear 5 is meshed with the intermediate gear set, and the intermediate gear set is meshed with the driven gear set. The driving gear is a thick gear, the middle gear set and the driven gear set are both composed of two thin gears with the same tooth number and tooth width, and the tooth width of the thin gears is about 1/2 of the tooth width of the thick gears; one of the thin gear wheels is sleeved on the other thin gear wheel shaft and can do relative motion. As shown in fig. 3 and 4, the driven gear thin gear 6-a in the driven gear set is provided with a rectangular notch in a hub web plate, and one side of the notch is a conical surface; the driven gear thin gear shaft 6-b is provided with a through hole and a lug for installing a bolt, the lug can penetrate through the rectangular notch of the driven gear thin gear shaft 6-b, and the lug and the rectangular notch are arranged in a clearance mode. One side of the anti-backlash cushion block 7 is a conical surface and is provided with two through holes for mounting bolts.
During assembly, the thin gear is sleeved on the other thin gear shaft, the gap eliminating cushion block 7 is placed in the thin gear shaft, then the fixing claw of the angular duplex lock washer 9 is fixed on the second hexagon head bolt 8, and the hexagon self-locking nut 10 is screwed down. In the process of screwing the nut, the screw-up pressure forces the conical surface of the anti-backlash cushion block 7 to interact with the conical surface of the rectangular notch of the thin gear, so that the two thin gears are staggered, namely the left and right tooth surfaces of the two thin gears of the driven gear set are respectively clung to the left and right tooth surfaces of the two thin gears of the middle gear set, the nut is continuously locked, the left and right tooth surfaces of the two thin gears on the middle gear set are also staggered and respectively clung to the left and right tooth surfaces of the thick gear, and the anti-backlash purpose is. Assembling the anti-backlash gear set in advance, not screwing the hexagonal self-locking nut 10, fixing the driving gear 5 after the gear box structure is assembled, meshing the thin gear shaft of the middle gear set with the driving gear 5 to enable the thin gear shaft to be attached to the tooth surface of one side of the driving gear 5, and screwing the hexagonal self-locking nut 10 of the anti-backlash gear set to eliminate backlash.
According to the invention, the hexagonal self-locking nut 10 is screwed down, so that the second hexagonal bolt 8 is pressed down, the conical surface of the anti-backlash cushion block 7 is forced to interact with the conical surface of the rectangular notch of the thin gear, and meanwhile, the other end surface of the anti-backlash cushion block 7 is tightly propped against the lug, so that two thin gears in the driven gear set are staggered, and the purposes of compensating processing and assembling clearance are achieved. In addition, the invention considers the factors of thermal expansion and cold contraction of the sizes of the gear box body 1 and the gear set structure material at different temperatures, selects reasonable anti-backlash cushion block materials and designs and determines the length size from the conical surface at one side of the anti-backlash cushion block to the opposite side. When the temperature change is large, the center distance of the gear pair is increased or reduced due to the thermal expansion of the gear box body 1 and the gear material, the length size of the anti-backlash cushion block 7 is correspondingly increased or reduced, and the gap generated by the increase or reduction of the center distance of the two thin gear dislocation compensation gear pairs in the driven gear set is ensured, so that the multi-stage speed reduction anti-backlash gear compensation of the structure at different temperatures is realized. The gear material is preferably high-strength high-quality stainless steel. The materials of the gear box body 1 and the anti-backlash cushion block 7 are preferably hard aluminum alloy.
Example two:
a two-stage transmission anti-backlash gear compensation mechanism for an airplane comprises: the driving gear 5 is a thick gear, the tooth width is 30mm, the middle gear set is composed of two thin gears with the same tooth number, the tooth width is 15mm, the driven gear set is composed of two thin gears with the same tooth number, and the tooth width is 13 mm; the driving gear 5 is an integral straight-tooth gear, the driving gear 5 is meshed with the intermediate gear set, and the intermediate gear set is meshed with the driven gear set. One of the thin gears is sleeved on a shaft integrated with the other thin gear and can do relative motion, and the driven gear thin gear 6-a and the driven gear thin gear shaft 6-b of the driven gear set are sector gears. One thin gear in the driven gear set is provided with a rectangular notch in a hub web plate, the rectangular notch is vertically and radially arranged in the middle of the web plate, and one side of the rectangular notch is a conical surface; the other thin gear which is coaxially integrated is provided with a through hole for mounting a bolt and a lug, the lug can penetrate through a rectangular notch of the thin gear shaft 6-b of the driven gear, and the gap between the lug and the rectangular notch is set to be 0.5 mm. One side of the anti-backlash cushion block 7 is a conical surface and is provided with two through holes for mounting bolts.
During assembly, the thin gear is sleeved on the other thin gear shaft, the gap eliminating cushion block 7 is placed in the thin gear shaft, then the fixing claw of the angular duplex lock washer 9 is fixed on the second hexagon head bolt 8 hexahedron, and the hexagon self-locking nut 10 is screwed down. In the process of screwing the hexagonal self-locking nut 10, the screwing pressure forces the conical surface of the anti-backlash cushion block 7 to interact with the conical surface of the rectangular notch of the thin gear, and the other end surface of the anti-backlash cushion block 7 is propped against the lug, so that two thin gears in the driven gear set are staggered, namely the left tooth surface and the right tooth surface of the two thin gears are respectively clung to the left tooth surface and the right tooth surface of the two thin gears of the middle gear, the hexagonal self-locking nut 10 is continuously locked, the left tooth surface and the right tooth surface of the two thin gears on the middle gear are also staggered and respectively clung to the left tooth surface and the right tooth surface of the driving gear, and the gap caused by processing and.
Meanwhile, according to the difference of the linear expansion coefficients of the materials of the gear box body 1 and the gear set and considering the structural size factor, a reasonable material of the anti-backlash cushion block 7 is selected, and the size from the conical surface at one side of the anti-backlash cushion block to the opposite side is determined according to the linear expansion coefficient, so that the two-stage speed reduction anti-backlash gear compensation of the structure at different temperatures is realized. The gear material is preferably high-strength stainless steel 05Cr17Ni4Cu4 Nb. The anti-backlash cushion block 7 is preferably made of hard aluminum alloy 2024-T351. Compared with a spring or a helical gear, the mechanism has the advantages of large rigidity, small volume, light weight and good manufacturability, and simultaneously realizes the function of backlash compensation when the driving gear rotates in the forward direction and rotates in the reverse direction within a wide temperature range of-70 ℃ to +120 ℃ through the influence of temperature on backlash compensation. As only one gear bears torque during forward rotation and reverse rotation, the bearing capacity is limited, and the strength of the gear is calculated to meet the design requirement. The two-stage speed reduction anti-backlash gear box improves the performance and the stability of airplane control and improves the control comfort of a driver.
The invention discloses a backlash eliminating method of a multistage transmission speed reduction backlash eliminating gear box for an airplane, which comprises the following steps of,
when the gear box is assembled, the assembling gears are meshed; and (3) placing the anti-backlash cushion block 7, fixing the fixing claw of the angular duplex lock washer 9 to the hexagon of the hexagonal head bolt 8 through bolt connection, and screwing the nut. In the process of screwing the nut, the screw-up pressure forces the conical surface of the anti-backlash cushion block 7 to interact with the conical surface of the rectangular notch, and the other end surface of the anti-backlash cushion block 7 is tightly propped against the lug, so that the two thin gears in the driven gear set are staggered, the left tooth surface and the right tooth surface of the two thin gears are respectively tightly attached to the left tooth surface and the right tooth surface of the two thin gears of the middle gear set, the nut is continuously locked, and the left tooth surface and the right tooth surface of the two thin gears on the middle gear set are also staggered and are respectively tightly attached to.
Claims (10)
1. The utility model provides an aircraft is with multistage transmission speed reduction anti-backlash gear box which characterized in that includes: the gear box comprises a gear box body (1), an anti-backlash cushion block (7), a bolt, a nut, a driving gear (5), a middle gear set and a driven gear set which are sequentially meshed and driven;
the driving gear (5), the intermediate gear set and the driven gear set are arranged in the gear box body (1);
the intermediate gear set comprises an intermediate gear thin gear (2-a) and an intermediate gear thin gear shaft (2-b) with gears integrated with the shaft; the intermediate gear thin gear (2-a) is sleeved on the shaft of the intermediate gear thin gear shaft (2-b);
the driven gear set comprises a driven gear thin gear (6-a) and a driven gear thin gear shaft (6-b) with gears integrated with the shaft; the driven gear thin gear (6-a) is sleeved on the shaft of the driven gear thin gear shaft (6-b);
a hub web plate of the driven gear thin gear (6-a) is provided with a rectangular notch; a web plate of the driven gear thin gear shaft (6-b) is provided with a lug; the lug penetrates through the rectangular notch, one side of the lug is arranged in a clearance with the rectangular notch, and the other side of the lug is tightly propped against the clearance elimination cushion block (7) embedded into the rectangular notch; the contact surface of the anti-backlash cushion block (7) and the rectangular notch is an inclined plane with an outward flaring;
the bolt penetrates through the anti-backlash cushion block (7) and the driven gear thin gear shaft (6-b) to be connected and pressed with the nut, and is used for enabling the upper thin gear and the lower thin gear of the driven gear set to be staggered, so that the upper thin gear and the lower thin gear of the middle gear set are driven to be staggered, and the left tooth surface and the right tooth surface of the upper thin gear and the right tooth surface of the lower thin gear of the middle gear set are respectively clu.
2. The multistage transmission speed reduction anti-backlash gearbox for the aircraft as claimed in claim 1, wherein the gearbox body (1) and the anti-backlash cushion block (7) are made of hard aluminum alloy.
3. The multistage transmission speed reduction anti-backlash gearbox for the aircraft as claimed in claim 1, wherein the gear material is high-strength stainless steel.
4. The multistage transmission speed-reducing anti-backlash gearbox for aircraft as claimed in claim 1, wherein the driven gear thin gear (6-a) and the driven gear thin gear shaft (6-b) of the driven gear set are sector gears.
5. The multistage transmission speed-reducing anti-backlash gearbox for the aircraft as claimed in claim 1, wherein the rectangular notch is vertically and radially arranged in the middle of the hub web of the driven gear thin gear (6-a).
6. The multistage transmission speed reduction anti-backlash gearbox for the aircraft as claimed in claim 1, wherein the thin gear tooth width of the intermediate gear set and the driven gear set is 1/2 of the tooth width of the driving gear (5).
7. The multi-stage transmission speed-reducing anti-backlash gear box for the aircraft as claimed in claim 1, wherein the bolts and the nuts are arranged in pairs, and the bolts and the nuts are arranged in multiple pairs.
8. The multistage transmission speed-reducing anti-backlash gearbox for the aircraft as claimed in claim 7, further comprising an angular duplex stop washer (9), wherein the bolt is a second hexagon head bolt (8), the angular duplex stop washer (9) is disposed below a bolt head of the second hexagon head bolt (8), and a fixing claw of the angular duplex stop washer (9) is fixed to a hexahedron of the bolt head.
9. An anti-backlash method for a multi-stage transmission speed-reducing anti-backlash gear box for an airplane, which is characterized in that the multi-stage transmission speed-reducing anti-backlash gear box for the airplane based on any one of claims 1 to 8 comprises,
step 1: sleeving the intermediate gear set and the driven gear set respectively, and assembling a driving gear (5) to be meshed with the intermediate gear set which is meshed with the driven gear set;
step 2: a gap eliminating cushion block (7) is placed in a rectangular notch of the driven gear thin gear (6-a) and connected through a bolt;
and step 3: screwing the nut, screwing pressure to force the conical surface of the anti-backlash cushion block (7) to interact with the conical surface of the rectangular notch, and ejecting the other end surface of the anti-backlash cushion block (7) with the lug, so that the tooth surfaces of the driven gear thin gear (6-a) and the driven gear thin gear shaft (6-b) in the driven gear set are staggered, and the left tooth surface and the right tooth surface of the two thin gears are respectively clung to the left tooth surface and the right tooth surface of the middle gear thin gear (2-a) and the middle gear thin gear shaft (2-b) of the middle gear set;
and 4, step 4: and then the nut is continuously screwed, and the left and right tooth surfaces of the intermediate gear thin gear (2-a) and the intermediate gear thin gear shaft (2-b) on the intermediate gear are also dislocated and respectively cling to the left and right tooth surfaces of the driving gear (5).
10. The anti-backlash method for the multistage transmission speed-reducing anti-backlash gearbox for the aircraft as claimed in claim 9, wherein the step 1 further comprises fixing the fixing claws of the angle-shaped duplex lock washer (9) to the hexahedron of the second hexagon head bolt (8) before tightening the nut.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010023690.8A CN111059251A (en) | 2020-01-09 | 2020-01-09 | Multi-stage transmission speed reduction anti-backlash gear box for airplane and anti-backlash method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010023690.8A CN111059251A (en) | 2020-01-09 | 2020-01-09 | Multi-stage transmission speed reduction anti-backlash gear box for airplane and anti-backlash method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114750205A (en) * | 2022-04-22 | 2022-07-15 | 江苏小野智能装备有限公司 | Five move two overlapping gear transfer mechanisms of platform |
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| CN2705664Y (en) * | 2004-05-11 | 2005-06-22 | 济南二机床集团有限公司 | Gap clearing device for gear driving |
| CN202228639U (en) * | 2011-08-30 | 2012-05-23 | 浙江瑞远机床有限公司 | Novel gear backlash elimination structure |
| CN102588559A (en) * | 2012-02-13 | 2012-07-18 | 北京波尔通导科技有限公司 | Gapless gear transmission device and method for removing gear transmission gap |
| CN104389992A (en) * | 2014-09-28 | 2015-03-04 | 温州职业技术学院 | Cylindrical gear tooth backlash adjusting device with bend screw |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114750205A (en) * | 2022-04-22 | 2022-07-15 | 江苏小野智能装备有限公司 | Five move two overlapping gear transfer mechanisms of platform |
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