CN107842601B - Gear chamber cover connecting device - Google Patents
Gear chamber cover connecting device Download PDFInfo
- Publication number
- CN107842601B CN107842601B CN201711291620.5A CN201711291620A CN107842601B CN 107842601 B CN107842601 B CN 107842601B CN 201711291620 A CN201711291620 A CN 201711291620A CN 107842601 B CN107842601 B CN 107842601B
- Authority
- CN
- China
- Prior art keywords
- gear chamber
- cover body
- compression bolt
- hole
- cover
- 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.)
- Active
Links
- 230000006835 compression Effects 0.000 claims abstract description 49
- 238000007906 compression Methods 0.000 claims abstract description 49
- 238000013016 damping Methods 0.000 claims abstract description 15
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000035939 shock Effects 0.000 claims description 55
- 238000010521 absorption reaction Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 abstract description 12
- 230000005855 radiation Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 10
- 238000007789 sealing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/031—Gearboxes; Mounting gearing therein characterised by covers or lids for gearboxes
-
- 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
- F16H57/025—Support of gearboxes, e.g. torque arms, or attachment to other devices
-
- 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
- F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
-
- 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
- F16H2057/02039—Gearboxes for particular applications
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a gear chamber cover connecting device which comprises a cover body, wherein one end of the cover body is provided with a damping structure, a compression bolt for compressing the cover body on a gear chamber is arranged on the cover body in a penetrating manner, and an elastic compression structure for separating the compression bolt from the cover body is arranged between the compression bolt and the cover body. The invention has reasonable structure, can effectively weaken the vibration transmitted from the gear chamber to the gear chamber cover of the internal combustion engine, and reduce the radiation noise on the surface of the gear chamber cover, thereby reducing the noise of the whole internal combustion engine and the noise pollution of the internal combustion engine.
Description
Technical Field
The invention relates to the technical field of internal combustion engine design, in particular to a gear chamber cover connecting device.
Background
The gear chamber cover is a shell part arranged on the front end face of the gear chamber of the internal combustion engine and is used for sealing the front end of the gear chamber to form a complete inner cavity of the gear chamber.
The traditional connection method between the gear chamber cover and the gear chamber is as follows: the gear chamber cover and the gasket thereof are directly screwed and mounted on the front end face of the gear chamber by bolts, the gear chamber and the gear chamber cover are in metal direct contact with each other, the vibration of the gear chamber can be directly transmitted to the gear chamber cover by the mounting bolts and the gasket, the gear chamber is excited by the strong vibration transmitted by the gear chamber to enable the gear chamber cover to correspondingly follow the vibration, so that stronger radiation noise is generated on the surface of the gear chamber cover, and the gear chamber cover becomes one of the largest noise sources of the internal combustion engine.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art and aims to provide the gear chamber cover connecting device with good damping effect and less noise pollution.
In order to achieve the above purpose, the invention provides a gear chamber cover connecting device, which comprises a cover body, wherein one end of the cover body is provided with a damping structure, the cover body is provided with a compression bolt for compressing the cover body on a gear chamber in a penetrating way, and an elastic compression structure for separating the compression bolt from the cover body is arranged between the compression bolt and the cover body.
Further, the compression bolt include the screw rod section of setting in the front end and set up the screw rod head at the rear end, the middle part of compression bolt is equipped with a location section, the front end protrusion of location section be equipped with the inconsistent location protruding edge of gear room, elasticity compress tightly the structure include the cover be equipped with on the location section of compression bolt with the spaced shock attenuation bush of compression bolt and cover body, shock attenuation bush's one end protrusion be equipped with screw rod head looks adaptation spacing protruding edge.
Furthermore, the cover body is provided with a through hole corresponding to the threaded hole of the gear chamber, and the elastic pressing structure is arranged between the pressing bolt and the through hole.
As a further improvement, the positioning flange of the compression bolt is arranged in clearance with the hole wall of the through hole, the outer circular surface of the shock absorption bushing is matched with the hole wall of the through hole, and the outer diameter of the shock absorption bushing is larger than the diameter of the positioning flange.
Further, the outer diameter of the shock absorbing bushing is smaller than the diameter of the through hole, and a bulge matched with the outer circular surface of the shock absorbing bushing is arranged at the orifice of the through hole in a protruding mode along the radial direction.
Still further, be equipped with on the screw rod head with spacing protruding edge on the shock attenuation bush is fit for flange face structure spacing protruding edge on the shock attenuation bush with be equipped with the gasket between the lid body.
Further, the shock absorbing bushing is of a rubber structure.
As a further improvement, the damping structure comprises a damping pad arranged between the cover body and the gear chamber, a groove is concavely formed in the connecting end face of the cover body, and a clamping part matched with the groove is convexly arranged on the damping pad.
Advantageous effects
Compared with the prior art, the gear chamber cover connecting device has the following beneficial effects: the gear chamber cover connecting device is reasonable in design and good in use and operation manufacturability; the vibration transmitted from the gear chamber to the gear chamber cover of the internal combustion engine can be effectively reduced, and the radiation noise on the surface of the gear chamber cover is reduced, so that the noise of the whole internal combustion engine is reduced, and the noise pollution of the internal combustion engine is reduced; the sealing effect is good, the noise is reduced, and the vibration amplitude of the gear chamber cover is effectively reduced.
Drawings
Fig. 1 is a partial cross-sectional view of a gear chamber cover connection device of the present invention.
In the figure: 1. a cover body; 2. a gear chamber; 3. a compression bolt; 301. a screw section; 302. a screw head; 303. a positioning section; 304. positioning the convex edge; 305. a flange face structure; 4. a shock absorbing structure; 401. a shock pad; 402. a groove; 403. an engagement portion; 5. a shock absorbing bushing; 6. limiting convex edges; 7. a gasket; 8. a through hole; 9. and (3) a threaded hole.
Detailed Description
The following detailed description of embodiments of the invention is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the invention is not limited to the specific embodiments.
The specific embodiments of the present invention are as follows: as shown in fig. 1, a gear chamber cover connecting device comprises a cover body 1, wherein one end of the cover body 1 is provided with a damping structure 4, the cover body 1 is provided with a compression bolt 3 for compressing the cover body on a gear chamber 2 in a penetrating manner, and an elastic compression structure for separating the compression bolt 3 from the cover body 1 is arranged between the compression bolt 3 and the cover body. When the gear chamber cover is installed, the cover body 1 and the gear chamber 2 are in transitional connection by adopting the damping structure 4 made of elastic rubber materials, so that the vibration transmitted from the gear chamber to the gear chamber cover by the internal combustion engine can be effectively weakened, the radiation noise on the surface of the gear chamber cover is reduced, the noise of the whole internal combustion engine is reduced, and the noise pollution of the internal combustion engine is reduced; the compression bolt 3 can be effectively isolated from the cover body 1 by an elastic compression structure, so that contact or collision between the compression bolt 3 and the gear chamber is avoided, vibration force is not directly transmitted to the cover body 1 when the gear chamber 2 and the compression bolt 3 vibrate, vibration and noise generated by the gear chamber cover are greatly reduced after the damping effect of the elastic compression structure is achieved, noise pollution is reduced, the service life of an engine is prolonged, and the overall performance of the engine is improved; reasonable design and good use and operation manufacturability.
In this embodiment, the compression bolt 3 includes the screw rod section 301 that sets up at the front end and sets up the screw rod head 302 at the rear end, the middle part of compression bolt 3 is equipped with a location section 303, the front end protrusion of location section 303 is equipped with the protruding edge 7 of location that contradicts with gear room 2, elasticity compress tightly the structure and include the shock attenuation bush 5 that separates compression bolt 3 and cover body 1 that overlap on the location section 303 of compression bolt 3, the one end protrusion of shock attenuation bush 5 is equipped with the spacing protruding edge 6 that suits with screw rod head 302, screw rod head 302 utilizes the spacing protruding edge 6 of shock attenuation bush 5 to compress tightly in cover body 1, when cover body 1 compresses tightly on gear room 2 through shock-absorbing structure 4, simultaneously, location protruding edge 7 compresses tightly on gear room 2, guarantee the installation accuracy of compression bolt 3, guarantee that shock attenuation bush 5 in the compression bolt 3 is in the compression state, under the dual shock attenuation through shock attenuation of shock attenuation bush 5, shock attenuation structure 4, the shock attenuation effect is obvious, the engine noise has been greatly reduced.
In this embodiment, the cover body 1 is provided with a through hole 8 corresponding to the threaded hole 9 of the gear chamber 2, the elastic compression structure is arranged between the compression bolt 3 and the through hole 8 for damping, the mounting surface of the cover body 1 is provided with a plurality of through holes 8, and the through hole 8 of the gear chamber cover is a circular through hole structure, so that the connection is firm.
In the embodiment, the positioning convex edge 304 of the compression bolt 3 is arranged with a hole wall gap of the through hole 8, the outer circular surface of the shock absorption bushing 5 is matched with the hole wall of the through hole 8, and the outer diameter of the shock absorption bushing 5 is larger than the diameter of the positioning convex edge 304; the positioning convex edge 304 is not contacted or collided with the cover body 1, the structural design is reasonable and compact, the shock absorption structure is simple, and the effect is good; the external diameter of shock attenuation bush 5 is less than the diameter of through-hole 8, and the drill way department of through-hole 8 is along radial direction convex be equipped with shock attenuation bush 5 outer disc compatible protruding, guarantee that shock attenuation bush 5 installs the location accuracy.
In this embodiment, the screw head 302 is provided with a flange surface structure 305 adapted to the limit flange 6 on the shock absorbing bush 5, a gasket 7 is provided between the limit flange 6 on the shock absorbing bush 5 and the cover body 1, the shock absorbing bush 5 is of a rubber structure, and the flat gasket is of a deformable thin steel plate structure adapted to the limit flange 6 of the shock absorbing bush 5, so as to facilitate pressing the cover body 1 onto the gear chamber 2.
In this embodiment, the shock absorbing structure 4 includes a shock absorbing pad 401 disposed between the cover body 1 and the gear chamber 2, a groove 402 is concavely disposed on a connection end surface of the cover body 1, a clamping portion 403 adapted to the groove 402 is convexly disposed on the shock absorbing pad 401, the shock absorbing pad 401 is firmly connected with the cover body 1, and is not easy to separate, so that the cover body 1 and the gear chamber 2 are convenient to assemble. A groove 402 for installing the shock pad 401 is arranged on the mounting surface of the periphery of the cover body 1, and the depth of the groove 402 is 3-11 mm; the shock pad 401 is made of elastic rubber material and is designed along with the trend of the groove 402 on the gear chamber cover, the cross section of the shock pad 401 is T-shaped or L-shaped or rectangular, the sealing effect is good, the noise is reduced, and the clamping part 403 in the groove 402 also has a shock absorption effect, so that the shock amplitude of the cover body 1 is effectively reduced.
When assembled: firstly, a shock pad 401 is arranged in a groove 402 on a gear chamber cover, and then the cover body 1 and the shock pad 401 thereof are covered on the front end surface of the gear chamber 2 together, so that the threaded hole 9 of the front end surface of the gear chamber 2 is centered with a gear chamber cover through hole 8; then, the compression bolt 3 passes through the through hole 8 on the gear chamber cover and is screwed into the threaded hole 9 on the gear chamber; and then, locking and installing the compression bolt 3 until the end face of the positioning convex edge 304 on the compression bolt 3 is compressed with the front end face of the gear chamber 2, so that the assembly process can be completed. The shock pad 401 and the shock absorbing bushing 5 are in a compressed state, and the compression ratio is 10-42%; furthermore, the front end surface of the gear chamber 2 is not in direct contact with the mounting surface of the cover body 1, and an assembly gap of 0.5-3 mm exists. The damping and noise reduction effects of the gear chamber cover connecting device are guaranteed.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these do not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (5)
1. The gear chamber cover connecting device comprises a cover body (1), and is characterized in that one end of the cover body (1) is provided with a damping structure (4), the cover body (1) is provided with a compression bolt (3) for compressing the cover body on a gear chamber (2) in a penetrating manner, and an elastic compression structure for separating the compression bolt (3) from the cover body (1) is arranged between the compression bolt and the cover body;
the compression bolt (3) comprises a screw rod section (301) arranged at the front end and a screw rod head (302) arranged at the rear end, a positioning section (303) is arranged in the middle of the compression bolt (3), a positioning convex edge (7) which is in contact with the gear chamber (2) is convexly arranged at the front end of the positioning section (303), the elastic compression structure comprises a shock absorption lining (5) which is sleeved on the positioning section (303) of the compression bolt (3) and separates the compression bolt (3) from the cover body (1), and a limiting convex edge (6) which is matched with the screw rod head (302) is convexly arranged at one end of the shock absorption lining (5);
the screw head (302) is provided with a flange surface structure (305) which is matched with the limit protruding edge (6) on the shock absorption bushing (5), and a gasket (7) is arranged between the limit protruding edge (6) on the shock absorption bushing (5) and the cover body (1);
the damping structure (4) comprises a damping pad (401) arranged between the cover body (1) and the gear chamber (2), a groove (402) is concavely arranged on the connecting end surface of the cover body (1), and a clamping part (403) matched with the groove (402) is convexly arranged on the damping pad (401);
the depth of the groove (402) is 3-11 mm; the shock pad (401) is made of elastic rubber materials and is designed along with the trend of a groove (402) on the gear chamber cover, and the cross section of the shock pad (401) is T-shaped or L-shaped or rectangular.
2. Gear chamber cover connection device according to claim 1, characterized in that the cover body (1) is provided with a through hole (8) corresponding to the threaded hole (9) of the gear chamber (2), and the elastic compression structure is arranged between the compression bolt (3) and the through hole (8).
3. Gear chamber cover connection according to claim 2, characterized in that the positioning flange (304) of the compression bolt (3) is arranged in a gap with the hole wall of the through hole (8), the outer circumferential surface of the shock absorbing bushing (5) is adapted to the hole wall of the through hole (8), and the outer diameter of the shock absorbing bushing (5) is larger than the diameter of the positioning flange (304).
4. A gear chamber cover connection according to claim 3, characterized in that the outer diameter of the shock absorbing bushing (5) is smaller than the diameter of the through hole (8), and that the orifice of the through hole (8) is provided with protrusions protruding in radial direction, which protrusions are adapted to the outer circumferential surface of the shock absorbing bushing (5).
5. Gear chamber cover connection according to claim 1, characterized in that the shock absorbing bushing (5) is of rubber construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711291620.5A CN107842601B (en) | 2017-12-08 | 2017-12-08 | Gear chamber cover connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711291620.5A CN107842601B (en) | 2017-12-08 | 2017-12-08 | Gear chamber cover connecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107842601A CN107842601A (en) | 2018-03-27 |
| CN107842601B true CN107842601B (en) | 2024-02-09 |
Family
ID=61664027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711291620.5A Active CN107842601B (en) | 2017-12-08 | 2017-12-08 | Gear chamber cover connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107842601B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454296A (en) * | 2019-08-26 | 2019-11-15 | 常州盾嘉精密机械有限公司 | A gear chamber cover and its processing technology |
| CN113062960A (en) * | 2021-02-05 | 2021-07-02 | 浙江吉利控股集团有限公司 | Double damping gear, engine balance shaft gear structure and reducer gear structure |
| JP2023049568A (en) * | 2021-09-29 | 2023-04-10 | 株式会社クボタ | Transmission case attachment device and multi-purpose vehicle having the transmission attachment device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0617364U (en) * | 1991-01-30 | 1994-03-04 | ツェン、テォ・ツァイ | Reducer gearbox for motors |
| JPH0630458U (en) * | 1992-09-22 | 1994-04-22 | いすゞ自動車株式会社 | Washer |
| CN203570987U (en) * | 2013-10-29 | 2014-04-30 | 中国石油化工集团公司 | Side cover fixing device |
| CN204552946U (en) * | 2015-02-10 | 2015-08-12 | 无锡沃尔福汽车技术有限公司 | A kind of denoising device of motor head |
| CN205226310U (en) * | 2015-12-22 | 2016-05-11 | 浙江宏业农装科技股份有限公司 | Gear box case lid |
| CN106704334A (en) * | 2016-11-25 | 2017-05-24 | 奇瑞汽车股份有限公司 | Multifunctional bolt |
| CN206190871U (en) * | 2016-11-09 | 2017-05-24 | 南京创力传动机械有限公司 | Gear box takes precautions against earthquakes |
| CN106989161A (en) * | 2017-05-25 | 2017-07-28 | 贵州大学 | A kind of Hydrodynamic transmission blimp |
| CN207687314U (en) * | 2017-12-08 | 2018-08-03 | 广西玉柴机器股份有限公司 | Gear chamber cover cover connector system |
-
2017
- 2017-12-08 CN CN201711291620.5A patent/CN107842601B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0617364U (en) * | 1991-01-30 | 1994-03-04 | ツェン、テォ・ツァイ | Reducer gearbox for motors |
| JPH0630458U (en) * | 1992-09-22 | 1994-04-22 | いすゞ自動車株式会社 | Washer |
| CN203570987U (en) * | 2013-10-29 | 2014-04-30 | 中国石油化工集团公司 | Side cover fixing device |
| CN204552946U (en) * | 2015-02-10 | 2015-08-12 | 无锡沃尔福汽车技术有限公司 | A kind of denoising device of motor head |
| CN205226310U (en) * | 2015-12-22 | 2016-05-11 | 浙江宏业农装科技股份有限公司 | Gear box case lid |
| CN206190871U (en) * | 2016-11-09 | 2017-05-24 | 南京创力传动机械有限公司 | Gear box takes precautions against earthquakes |
| CN106704334A (en) * | 2016-11-25 | 2017-05-24 | 奇瑞汽车股份有限公司 | Multifunctional bolt |
| CN106989161A (en) * | 2017-05-25 | 2017-07-28 | 贵州大学 | A kind of Hydrodynamic transmission blimp |
| CN207687314U (en) * | 2017-12-08 | 2018-08-03 | 广西玉柴机器股份有限公司 | Gear chamber cover cover connector system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107842601A (en) | 2018-03-27 |
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