CN211951405U - Gear transmission clearance eliminating structure of aircraft steering wheel - Google Patents
Gear transmission clearance eliminating structure of aircraft steering wheel Download PDFInfo
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- CN211951405U CN211951405U CN202020137862.XU CN202020137862U CN211951405U CN 211951405 U CN211951405 U CN 211951405U CN 202020137862 U CN202020137862 U CN 202020137862U CN 211951405 U CN211951405 U CN 211951405U
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- backlash
- steering wheel
- groove
- platform
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Abstract
The utility model relates to the technical field of aviation, in particular to a gear transmission clearance eliminating structure of an aircraft steering wheel, which comprises a transmission gear and a clearance eliminating gear set; the transmission gear is sleeved on a transmission device of the aircraft steering wheel and is meshed with the anti-backlash gear set; the anti-backlash gear set comprises a driven gear, an anti-backlash gear and a locking screw; a platform is arranged on a hub web plate of the driven gear, one side of the platform is arranged in a wedge-shaped surface mode, and the other side of the platform is arranged in a vertical surface mode; through holes are symmetrically formed in a hub web plate of the driven gear by taking the platform as a center; a groove is formed in a hub web plate of the anti-backlash gear, one side of the groove is a wedge-shaped surface, and the other side of the groove is a vertical surface; through holes are symmetrically formed in a hub web plate of the anti-backlash gear by taking the groove as a center; the driven gear and the anti-backlash gear are coaxially arranged in parallel, the platform is in mutual contact with the wedge-shaped surface of the groove, the vertical surface is arranged in a clearance, and the locking screws respectively penetrate through holes in the driven gear and the anti-backlash gear and are screwed up.
Description
Technical Field
The utility model relates to an aviation technical field specifically is an aircraft steering wheel gear drive crack structure that disappears.
Background
When a pilot operates the steering wheel, the pilot's operation stroke is transmitted to the control surface of the airplane through the transmission mechanism and the operation line system, so that the flight attitude is controlled. When the transmission mechanism adopts gear transmission, the transmission mechanism has the advantages of high transmission efficiency, compact structure, reliable work, stable transmission ratio and the like. However, in the machining of the gear transmission, in order to compensate for the dimensional errors caused by the machining, installation and other processes and avoid the occurrence of the blocking condition, a certain tooth clearance must be reserved on the non-working surface of the gear teeth, and due to the existence of the clearance, a certain idle stroke exists in the gear mechanism during the reverse rotation, so that the pilot operation is delayed, and the natural frequency of an airplane operation system is reduced. In order to eliminate the adverse effect of gear backlash, a gear backlash elimination technique needs to be adopted. At present, the gear backlash eliminating technology has more types, and a plurality of gear backlash eliminating technologies cannot be applied due to the structural limitation in airplane operation.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides an aircraft steering wheel gear drive gap structure that disappears. The gap eliminating structure is high in transmission rigidity, simple in structure and convenient to install, reduces idle stroke when a pilot operates the steering wheel, improves operation characteristics, and fills up technical blank in the field.
The utility model discloses a realize through following technical scheme:
the utility model relates to a gear transmission anti-backlash structure of an aircraft steering wheel, which comprises a transmission gear and an anti-backlash gear group;
the transmission gear is sleeved on a transmission device of the aircraft steering wheel and is meshed with the anti-backlash gear set;
the anti-backlash gear set comprises a driven gear, an anti-backlash gear and a locking screw;
a platform is arranged on a hub web plate of the driven gear, one side of the platform is arranged in a wedge-shaped surface, and the other side of the platform is arranged in a vertical surface; through holes are symmetrically formed in a hub web plate of the driven gear by taking the platform as a center;
a groove is formed in a hub web plate of the anti-backlash gear, one side of the groove is a wedge-shaped surface, and the other side of the groove is a vertical surface; through holes are symmetrically formed in a hub web plate of the anti-backlash gear by taking the groove as a center;
the driven gear and the anti-backlash gear are coaxially arranged in parallel, the platform is in mutual contact with the wedge-shaped surface of the groove, the vertical surface is arranged in a clearance, and the locking screws respectively penetrate through the driven gear and the through holes in the anti-backlash gear to be screwed down.
Preferably, the transmission device adopts a gear shaft, and the gear shaft and the transmission gear are sleeved and arranged in a rigid connection mode through screws.
Preferably, the driven gear and the anti-backlash gear are sector gears.
Preferably, the through hole on the hub web plate of the anti-backlash gear is provided with an internal thread.
Preferably, the platform and the recess are fan-shaped.
Preferably, the outer side of the hub web of the driven gear is provided with a weight reduction groove.
Preferably, the locking screw rigidly connects the driven gear and the anti-backlash gear.
Preferably, the device further comprises an angular duplex stop washer; an angular duplex lock washer is provided between the lock screw and the driven gear, and a fixing claw of the angular duplex lock washer is fixed to the screw head.
Preferably, the aperture of the driven gear through hole is larger than that of the anti-backlash gear through hole.
Preferably, the land height is equal to the groove depth.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model provides a gear transmission clearance eliminating structure of an aircraft steering wheel, which is characterized in that a driven gear and a clearance eliminating gear are rigidly connected by a locking screw, the structure is simple and the installation is convenient; a wedge-shaped surface exists between the driven gear and the anti-backlash gear, dislocation is achieved through the cooperation of the wedge-shaped surface between the driven gear and the anti-backlash gear, the problem of a gap between the anti-backlash gear set and the transmission gear is solved, and the technical problem of the gear transmission gap when a pilot operates a steering wheel is eliminated.
Furthermore, the gear shaft and the transmission gear are in rigid connection and sleeved by screws, so that the compactness of the structure is improved, the transmission accuracy is improved, the work is reliable, and the service life is prolonged.
Furthermore, the through hole on the wheel hub web plate of the anti-backlash gear is provided with an internal thread, so that the locking screw is fastened and loosened.
Furthermore, a weight reduction groove is formed in a non-contact surface hub web plate of the driven gear, so that the weight of the driven gear is greatly reduced, gear transmission is facilitated, and the transmission efficiency is improved.
Furthermore, locking screw sets up driven gear and clearance elimination gear rigid connection, and greatly increased locking force avoids driven gear and the not hard up dislocation size change that leads to of clearance elimination gear.
Furthermore, the angular duplex lock washer is arranged between the locking screw and the driven gear, and the fixing claw of the angular duplex lock washer is fixed on the screw head, so that the locking screw is prevented from loosening, and the driven gear and the backlash eliminating gear are prevented from falling off in transmission.
Furthermore, the aperture of the through hole of the driven gear is larger than that of the through hole of the anti-backlash gear, so that the anti-backlash gear set is convenient to generate dislocation.
Drawings
FIG. 1 is a schematic illustration of the gear drive of the present embodiment;
FIG. 2 is a schematic view of the driven gear of the present embodiment;
FIG. 3 is a schematic sectional view taken along line A-A of the driven gear in the present embodiment;
FIG. 4 is a schematic view of the anti-backlash gear of the present embodiment;
FIG. 5 is a schematic cross-sectional view taken along line B-B of the anti-backlash gear of this embodiment;
FIG. 6 is a schematic structural diagram of the anti-backlash gear set in this embodiment;
fig. 7 is a schematic cross-sectional view of the anti-backlash gear set according to the present embodiment.
In the figure: 1 is a gear shaft; 2 is a driven gear; 3 is a transmission gear; 4 is an anti-backlash gear; 5 is a locking screw; and 6 is an angular duplex stop washer.
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 utility model provides a gear transmission anti-backlash structure of an aircraft steering wheel, which comprises a transmission gear 3 and an anti-backlash gear set; the transmission gear 3 is sleeved on a transmission device operated by the airplane, and the transmission gear 3 is meshed with the anti-backlash gear set; the anti-backlash gear set comprises a driven gear 2, an anti-backlash gear 4 and a locking screw 5; a platform is arranged on a hub web plate of the driven gear 2, one side of the platform is arranged in a wedge-shaped surface mode, and the other side of the platform is arranged in a vertical surface mode; through holes are symmetrically formed in a hub web plate of the driven gear 2 by taking the platform as a center; a groove is formed in a hub web plate of the anti-backlash gear 4, one side of the groove is a wedge-shaped surface, and the other side of the groove is a vertical surface; through holes are symmetrically formed in the hub web plate of the anti-backlash gear 4 by taking the groove as the center; driven gear 2 and anti-backlash gear 4 are coaxial to be arranged side by side, and the platform contacts with the wedge face of recess each other, and the perpendicular personally submits the clearance setting, and locking screw 5 penetrates driven gear 2 respectively and screws up the setting with the through-hole on the anti-backlash gear 4.
Example 1
The airplane control steering wheel adopts a transmission mechanism to control the flight direction of the airplane and provides a hand control device for a pilot to do twisting motion. A gear shaft 1 on a steering wheel and a transmission gear 3 are in rigid connection through a screw, the transmission gear 3 is meshed with an anti-backlash gear set, and the transmission gear 3 transmits rotating force to the anti-backlash gear set through rotation of the gear shaft 1 to achieve transmission of torque, as shown in fig. 1. The anti-backlash gear set comprises a driven gear 2, an anti-backlash gear 4 and a locking screw 5. The driven gear 2 and the anti-backlash gear 4 are coaxially arranged in parallel, the platform is contacted with the wedge-shaped contact surface of the groove, and the vertical surface is arranged in a clearance way; the locking screws 5 respectively penetrate through the driven gear 2 and the through holes on the anti-backlash gear 4 through the angular duplex stop washers 6 and are screwed tightly, so that the driven gear 2 and the anti-backlash gear 4 are tightly pressed and connected to generate dislocation; the left and right tooth surfaces of the driven gear 2 and the anti-backlash gear 4 are respectively clung to the left and right tooth surfaces of the transmission gear 3. The driven gear 2 and the transmission gear 3 are meshed with each other to transmit torque provided by a pilot, an installation position is provided for the anti-backlash gear, the anti-backlash gear 4 and the driven gear 2 are matched with each other to transmit the torque, and gaps existing in the meshing process of the gears are eliminated.
A platform is arranged on a hub web plate of the driven gear 2, one side of the platform is arranged in a wedge-shaped surface mode, and the other side of the platform is arranged in a vertical surface mode; through holes are symmetrically formed in a hub web plate of the driven gear 2 by taking the platform as a center; a weight reduction groove is arranged on the outer side of a hub web of the driven gear 2, as shown in figure 2; the driven gear 2 is shown in a cross-sectional view a-a in fig. 3.
A groove is formed in a hub web plate of the anti-backlash gear 4, one side of the groove is a wedge-shaped surface, and the other side of the groove is a vertical surface; through holes are symmetrically formed in the hub web plate of the anti-backlash gear 4 by taking the groove as the center; the through hole on the hub web of the anti-backlash gear 4 is provided with internal threads, as shown in fig. 4; a cross-sectional view B-B of the anti-backlash gear 4 is shown in FIG. 5.
Locking screws 5 penetrate through screw through holes in the driven gear 2 and the anti-backlash gear 4 respectively through an angular duplex lock washer 6 and are screwed up, so that the driven gear 2 and the anti-backlash gear 4 are tightly pressed and connected, the platform is in contact with the wedge-shaped surface of the groove, the wedge-shaped contact surface is in an inclined surface self-locking mode, and dislocation is generated. As shown in fig. 6, the staggered size is that the locking screw 5 is screwed down, the size is adjusted, and the purpose of eliminating the gear gap is achieved; a cross-sectional view of the anti-backlash gear set is shown in fig. 7.
Claims (10)
1. The utility model provides an aircraft steering wheel gear drive anti-backlash structure which characterized in that: comprises a transmission gear (3) and an anti-backlash gear set;
the transmission gear (3) is sleeved on a transmission device of the aircraft steering wheel, and the transmission gear (3) is meshed with the anti-backlash gear set;
the anti-backlash gear set comprises a driven gear (2), an anti-backlash gear (4) and a locking screw (5);
a platform is arranged on a hub web plate of the driven gear (2), one side of the platform is arranged in a wedge-shaped surface mode, and the other side of the platform is arranged in a vertical surface mode; through holes are symmetrically formed in a hub web plate of the driven gear (2) by taking the platform as a center;
a hub web plate of the anti-backlash gear (4) is provided with a groove, one side of the groove is arranged in a wedge-shaped surface mode, and the other side of the groove is arranged in a vertical surface mode; through holes are symmetrically formed in a hub web plate of the anti-backlash gear (4) by taking the groove as a center;
driven gear (2) and anti-backlash gear (4) are coaxial and are arranged side by side, the platform contacts with the wedge surface of the groove, the vertical surface is in clearance arrangement, and locking screws (5) penetrate through holes in driven gear (2) and anti-backlash gear (4) respectively and are screwed up.
2. An aircraft steering wheel gear drive backlash elimination structure according to claim 1, wherein: the transmission device adopts a gear shaft (1), and the gear shaft (1) and the transmission gear (3) are sleeved and arranged in a rigid connection mode through screws.
3. An aircraft steering wheel gear drive backlash elimination structure according to claim 1, wherein: the driven gear (2) and the anti-backlash gear (4) are sector gears.
4. An aircraft steering wheel gear drive backlash elimination structure according to claim 1, wherein: and an internal thread is arranged in a through hole in a hub web plate of the anti-backlash gear (4).
5. An aircraft steering wheel gear drive backlash elimination structure according to claim 1, wherein: the platform and the groove are fan-shaped.
6. An aircraft steering wheel gear drive backlash elimination structure according to claim 1, wherein: and a weight reduction groove is formed in the outer side of a hub web plate of the driven gear (2).
7. An aircraft steering wheel gear drive backlash elimination structure according to claim 1, wherein: the locking screw (5) rigidly connects the driven gear (2) and the anti-backlash gear (4).
8. An aircraft steering wheel gear drive backlash elimination structure according to claim 1, wherein: also comprises an angular duplex stop washer (6); the angle-shaped duplex stop washer (6) is arranged between the locking screw (5) and the driven gear (2), and a fixing claw of the angle-shaped duplex stop washer (6) is fixed to a screw head.
9. An aircraft steering wheel gear drive backlash elimination structure according to claim 1, wherein: the aperture of the through hole of the driven gear (2) is larger than that of the through hole of the anti-backlash gear (4).
10. An aircraft steering wheel gear drive backlash elimination structure according to claim 1, wherein: the height of the platform is equal to the depth of the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020137862.XU CN211951405U (en) | 2020-01-20 | 2020-01-20 | Gear transmission clearance eliminating structure of aircraft steering wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020137862.XU CN211951405U (en) | 2020-01-20 | 2020-01-20 | Gear transmission clearance eliminating structure of aircraft steering wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211951405U true CN211951405U (en) | 2020-11-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020137862.XU Active CN211951405U (en) | 2020-01-20 | 2020-01-20 | Gear transmission clearance eliminating structure of aircraft steering wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211951405U (en) |
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2020
- 2020-01-20 CN CN202020137862.XU patent/CN211951405U/en active Active
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