CN113847406A - Anti-backlash gear mechanism - Google Patents
Anti-backlash gear mechanism Download PDFInfo
- Publication number
- CN113847406A CN113847406A CN202111188775.2A CN202111188775A CN113847406A CN 113847406 A CN113847406 A CN 113847406A CN 202111188775 A CN202111188775 A CN 202111188775A CN 113847406 A CN113847406 A CN 113847406A
- Authority
- CN
- China
- Prior art keywords
- backlash
- backlash gear
- gear
- meshing
- helical tooth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- F16H55/17—Toothed wheels
- F16H55/18—Special devices for taking up backlash
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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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
Abstract
The invention discloses an anti-backlash gear mechanism, which is characterized in that; one end of the shaft (3) is respectively sleeved with a pressure spring (4), an anti-backlash gear B (2) and an anti-backlash gear A (1), an upper flat pad (5) is placed, and is screwed into a bolt (6) for connection, the anti-backlash gear A (1) is provided with a meshing helical tooth (7), the anti-backlash gear B (2) is provided with a meshing helical tooth groove (8), and the meshing helical tooth (7) is clamped into the meshing helical tooth groove (8) for meshing. The invention is convenient to install, can transmit certain load and has high reliability.
Description
Technical Field
The invention belongs to the technical field of aircrafts, and particularly relates to an anti-backlash gear mechanism.
Background
The anti-backlash gear mechanism is arranged in the control transmission system, and the output end of the anti-backlash gear mechanism is connected with a rotary differential transformer type angular displacement sensor (RVDT) to realize the high-precision transmission of the position information of the throttle lever. The electric signal of the throttle lever position is accurately read through the RVDT, the electric signal is transmitted to the engine controller, and the engine controller transmits the instruction to the executing mechanism, so that the function of automatically controlling the throttle lever with high precision is realized. In the traditional accelerator platform control transmission system, the adopted backlash eliminating gear mechanism is a double-gear piece and tension spring combined backlash eliminating method, the backlash caused by the error of the gear can be eliminated by the eliminating method, and the backlash caused by the gear abrasion can also be properly eliminated, but the installation and the transmission of certain load are inconvenient due to the limitation of the size of the spring, the tension spring becomes loose after the gear is abraded, and the reliability is low.
Disclosure of Invention
The invention aims to overcome the defects and provide an anti-backlash gear mechanism which is convenient to mount, can transmit a certain load and has high reliability.
The purpose of the invention and the main technical problem of solving the invention are realized by adopting the following technical scheme:
the invention discloses an anti-backlash gear mechanism, which is characterized in that a gear body is arranged on the gear body; one end of the shaft is respectively sleeved with a pressure spring, a clearance eliminating gear B and a clearance eliminating gear A, an upper flat pad is placed on the clearance eliminating gear A, the clearance eliminating gear A is screwed into a bolt for connection, meshing helical teeth are arranged on the clearance eliminating gear A, meshing helical tooth grooves are arranged on the clearance eliminating gear B, and the meshing helical teeth are clamped into the meshing helical tooth grooves for meshing.
The meshing helical teeth are angular protrusions with one side vertical and the other side inclined.
The meshing skewed tooth groove is an angular groove with one vertical side and the other inclined side.
Compared with the prior art, the invention has obvious beneficial effects, and the technical scheme shows that: the invention is connected by a pressure spring, an anti-backlash gear B and an anti-backlash gear A which are respectively sleeved on one end of a shaft, an upper flat pad is placed on the anti-backlash gear A, and a screw bolt is screwed in the anti-backlash gear A, meshing helical teeth are arranged on the anti-backlash gear A, and the meshing helical teeth are clamped into the meshing helical teeth grooves for meshing. When the anti-backlash gear A and the anti-backlash gear are assembled, the meshing helical teeth and the meshing helical tooth grooves are meshed, and meanwhile, under the action of the meshing helical teeth, the two anti-backlash gears A and the anti-backlash gear B rotate relatively along the helical tooth surface, so that the backlash meshed with the mating gear is eliminated. When the anti-backlash gear A and the anti-backlash gear B are assembled, the meshing helical teeth and the meshing helical tooth grooves are tightly attached together through locking of the bolts, and then the pre-tightening force of gear meshing is obtained through the spring. Finally, the anti-backlash gear A and the anti-backlash gear B rotate relatively to meet the requirement, the backlash of the gear pair is filled, and the backlash-free meshing of the gears is realized. The installation is convenient, certain load can be transmitted, and the reliability is high.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1A-A;
FIG. 3 is an enlarged view of FIG. 1 a;
FIG. 4 is a front view of an anti-backlash gear A and an anti-backlash gear B of the present invention;
FIG. 5 is a cross-sectional view of FIG. 4B-B;
FIG. 6 is a schematic structural view of an anti-backlash gear A and meshing helical teeth of the present invention;
FIG. 7 is a schematic structural view of the anti-backlash gear B and the meshing skewed tooth slot of the present invention.
The labels in the figure are:
1. a backlash eliminating gear A; 2. an anti-backlash gear B; 3. a shaft; 4. a pressure spring; 5. flattening the cushion; 6. a bolt 7, meshing helical teeth; 8. engaging the skewed tooth slot.
Detailed Description
The invention is further described with reference to the following drawings and detailed description.
The invention discloses an anti-backlash gear mechanism, which is characterized in that a gear body is arranged on the gear body; one end of the shaft 3 is respectively sleeved with a pressure spring 4, an anti-backlash gear B2 and an anti-backlash gear A1, an upper flat pad 5 is placed, and the upper flat pad is screwed into a bolt 6 for connection, an engaging helical tooth 7 is arranged on the anti-backlash gear A1, an engaging helical tooth groove 8 is arranged on the anti-backlash gear B2, and the engaging helical tooth 7 is clamped into the engaging helical tooth groove 8 for engagement.
The engaging helical teeth 7 are angular protrusions with one side vertical and the other side inclined.
The engaging skewed tooth slot 8 is an angular groove with one side vertical and the other side inclined.
When in use; when the anti-backlash gear A1 is assembled with the anti-backlash gear 2, the meshing helical teeth 7 and the meshing helical tooth grooves 8 are meshed, meanwhile, under the action of the meshing helical teeth 7, the two anti-backlash gears A1 and the anti-backlash gear B2 rotate relatively along the helical tooth surfaces, the backlash meshed with the mating gears is eliminated, referring to fig. 5-7, when the anti-backlash gear A1 is assembled with the anti-backlash gear B2, the meshing helical teeth 7 and the meshing helical tooth grooves 8 are tightly attached together through locking of the bolts 6, and then the pre-tightening force of gear meshing is obtained through the springs 4, referring to fig. 2. When the anti-backlash gear A1 and the anti-backlash gear B2 rotate relatively to each other to fill up the backlash of the gear pair.
Claims (3)
1. An anti-backlash gear mechanism is characterized in that; one end of the shaft (3) is respectively sleeved with a pressure spring (4), an anti-backlash gear B (2) and an anti-backlash gear A (1), an upper flat pad (5) is placed, and is screwed into a bolt (6) for connection, the anti-backlash gear A (1) is provided with a meshing helical tooth (7), the anti-backlash gear B (2) is provided with a meshing helical tooth groove (8), and the meshing helical tooth (7) is clamped into the meshing helical tooth groove (8) for meshing.
2. The anti-backlash gear mechanism of claim 1, wherein; the meshing helical teeth (7) are angular protrusions with one vertical side and the other inclined side.
3. The anti-backlash gear mechanism of claim 1, wherein; the meshing skewed tooth groove (8) is an angular groove with one vertical side and the other oblique side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111188775.2A CN113847406A (en) | 2021-10-12 | 2021-10-12 | Anti-backlash gear mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111188775.2A CN113847406A (en) | 2021-10-12 | 2021-10-12 | Anti-backlash gear mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113847406A true CN113847406A (en) | 2021-12-28 |
Family
ID=78978011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111188775.2A Pending CN113847406A (en) | 2021-10-12 | 2021-10-12 | Anti-backlash gear mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113847406A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2755358Y (en) * | 2004-10-29 | 2006-02-01 | 哈尔滨量具刃具集团有限责任公司 | Transmission backlash eliminating device of helical gears |
| CN103016680A (en) * | 2012-12-20 | 2013-04-03 | 西南计算机有限责任公司 | Automatic tooth backlash eliminating mechanism of gear pair |
| CN106286791A (en) * | 2016-08-16 | 2017-01-04 | 广东技术师范学院 | A kind of automatic removing method of travelling gear backlash |
| US20190210356A1 (en) * | 2016-07-04 | 2019-07-11 | I.Mer Co., Ltd. | Printing Machine Provided with Plate Cylinder Driving Device |
| CN112096828A (en) * | 2020-10-15 | 2020-12-18 | 沈阳埃克斯邦科技有限公司 | Helical spline anti-backlash gear |
-
2021
- 2021-10-12 CN CN202111188775.2A patent/CN113847406A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2755358Y (en) * | 2004-10-29 | 2006-02-01 | 哈尔滨量具刃具集团有限责任公司 | Transmission backlash eliminating device of helical gears |
| CN103016680A (en) * | 2012-12-20 | 2013-04-03 | 西南计算机有限责任公司 | Automatic tooth backlash eliminating mechanism of gear pair |
| US20190210356A1 (en) * | 2016-07-04 | 2019-07-11 | I.Mer Co., Ltd. | Printing Machine Provided with Plate Cylinder Driving Device |
| CN106286791A (en) * | 2016-08-16 | 2017-01-04 | 广东技术师范学院 | A kind of automatic removing method of travelling gear backlash |
| CN112096828A (en) * | 2020-10-15 | 2020-12-18 | 沈阳埃克斯邦科技有限公司 | Helical spline anti-backlash gear |
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