CN202851873U - Combined gear - Google Patents
Combined gear Download PDFInfo
- Publication number
- CN202851873U CN202851873U CN2012205369714U CN201220536971U CN202851873U CN 202851873 U CN202851873 U CN 202851873U CN 2012205369714 U CN2012205369714 U CN 2012205369714U CN 201220536971 U CN201220536971 U CN 201220536971U CN 202851873 U CN202851873 U CN 202851873U
- Authority
- CN
- China
- Prior art keywords
- gear
- shaft
- hole
- shaft sleeve
- axle sleeve
- 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.)
- Expired - Fee Related
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- Gears, Cams (AREA)
Abstract
The utility model discloses a combined gear. Grooves are arranged in the wall of an inner hole of a gear body in a distributed mode, a shaft sleeve is assembled in the inner hole of the gear body in an interference mode, protrusive bars in interference fit with the grooves are arranged on the periphery face of the shaft sleeve in a distributed mode, and a key groove is arranged in the wall of an inner hole of the shaft sleeve. The assembly of the gear body and the sleeve is achieved through the interference fit of the grooves in the wall of the inner hole of the gear body and the protrusive bars arranged on the periphery face of the shaft sleeve. A shaft hole of an existing gear can be directly assembled on a gear shaft. When the shaft hole of the gear is abraded, the shaft hole can be expanded to form a round hole, the grooves are arranged in the wall of the round hole, the shaft sleeved provided with the protrusive bars on the periphery face is machined, the shaft sleeve and the gear are assembled together to form the combined gear, and the inner hole of the shaft sleeve forms a new shaft hole of the combined gear. Thus, the combined gear can continue to be used, and the shaft sleeve can be processed in a thermal mode before the assembly of the shaft sleeve and the gear to enhance the strength of the shaft sleeve and to prolong the service life of the obtained combined gear.
Description
Technical field
The utility model relates to a kind of mechanical transmission part, relates in particular to a kind of built-up gear.
Background technique
Gear is as mechanically operated critical piece, the application in the industries such as automobile industry, machine building industry, instrument and apparatus industry, aerospace industry all very extensively, Gear Industry has become industry largest in the Chinese mechanical basic part.With regard to the market demand and production scale, the China Gear industry has surpassed Italy in global rank, occupies the 4th in the world.Because the restriction of China's Machining Technology, heat treatment technology causes gear axis hole serious wear, especially the easier wearing and tearing that cause gear axis hole and axle under impulsive load frequently, in the situation of wearing and tearing, simply repair through processing methods such as welding, turning, millings, its processing difficulties is complicated, cost is high, particularly the gear after repairing is no longer heat-treated, this just causes the wear-resisting poor of gear after the reparation, greatly reduce working life, therefore see that the gear through repairing generally is merely able to use very short a period of time again.In some industry even can be directly discarded gear, not repair, this all can cause very large waste of material.
The model utility content
The purpose of this utility model provides a kind of built-up gear, to solve in the prior art because do not carry out the gear reparation or because of the problem of the very short waste of material that causes in the working life after the gear reparation.
In order to realize above purpose, the utility model adopts following technological scheme: a kind of built-up gear, comprise the gear body, be laid with groove on the endoporus hole wall of gear body, interference is equipped with axle sleeve in the endoporus of described gear body, be laid with the raised line with described groove interference fit on the outer circumferential face of described axle sleeve, be provided with keyway on the endoporus hole wall of described axle sleeve.
Described groove is rectangular recess, and described raised line is the rectangle raised line.
Described groove evenly is laid on the endoporus hole wall of gear body, and described raised line evenly is laid on the outer circumferential face of described axle sleeve.
Described keyway is the flat key keyway.
Built-up gear of the present utility model is comprised of gear body and axle sleeve, realize between the two assembling by being arranged on the groove on the gear body endoporus hole wall and being arranged on interference fit between the raised line on the axle sleeve outer circumferential face between gear body and the axle sleeve, the axis hole of gear of the prior art generally all is circular hole, hole wall at axis hole has the flat key groove, gear can directly be assemblied on the gear shaft like this, after the axis hole wearing and tearing of gear, its axis hole can be expanded into circular hole, and at the hole wall of circular hole upper groove is set, process in addition the axle sleeve that an outer circumferential face has raised line, axle sleeve and gear be assembled together obtain built-up gear, the endoporus of axle sleeve forms the new axis hole of built-up gear, can continue to use through the built-up gear that forms after such reparation, before axle sleeve and original gear assembling, can heat-treat axle sleeve, increase the intensity of axle sleeve, so that the life-span of the built-up gear that obtains after repairing is elongated.By the method gear is repaired, the low also energy of simple to operate, cost is economical with materials well, simultaneously, and the long service life of the built-up gear that obtains after the reparation.In addition, axle sleeve and original gear are realized assembling by interference fit, both are demountable, even if axle sleeve damages and also can more renew easily, can farthest bring into play the effect of a gear, are conducive to saving resource, reduce cost.
Description of drawings
Fig. 1 is the utility model embodiment's overall structure schematic representation;
Fig. 2 is the structural representation of the gear body among Fig. 1;
Fig. 3 is the structural representation of the axle sleeve among Fig. 1.
Embodiment
A kind of embodiment of built-up gear, in Fig. 1 ~ 3, comprise gear body 2, gear body 2 is exactly a gear, on the endoporus hole wall of gear body 2, evenly be laid with rectangular recess 3, these rectangular recess 3 are so that the endoporus of gear body 2 becomes splined hole, interference is equipped with axle sleeve 1 in the endoporus of gear body 2, evenly be laid with the rectangle raised line 4 of the rectangular recess interference fit on the endoporus hole wall with gear body 2 on the outer circumferential face of axle sleeve 1, these rectangle raised lines are so that axle sleeve becomes hub splines.Axle sleeve 1 and gear body 2 have been assembled into an integral body by cooperating between rectangular recess 3 and the rectangle raised line 4.Be provided with flat key keyway 6 on the hole wall of the endoporus 5 of axle sleeve 1, the endoporus of axle sleeve 1 has formed the axis hole of built-up gear.
The groove that is arranged in the present embodiment on the endoporus hole wall of gear body 2 is rectangular recess, also can be other forms of groove, and the raised line that is arranged on accordingly on the outer circumferential face of axle sleeve 1 also should be the other forms of raised line that matches with groove.
The distribution of groove in the present embodiment on the endoporus hole wall of gear body is uniformly, and the same distribution of raised line on the axle sleeve outer circumferential face also is uniformly, and certainly, both distributions also can be inhomogeneous.
Claims (4)
1. built-up gear, it is characterized in that: comprise the gear body, be laid with groove on the endoporus hole wall of gear body, interference is equipped with axle sleeve in the endoporus of described gear body, be laid with the raised line with described groove interference fit on the outer circumferential face of described axle sleeve, be provided with keyway on the endoporus hole wall of described axle sleeve.
2. built-up gear according to claim 1, it is characterized in that: described groove is rectangular recess, described raised line is the rectangle raised line.
3. built-up gear according to claim 2, it is characterized in that: described groove evenly is laid on the endoporus hole wall of gear body, and described raised line evenly is laid on the outer circumferential face of described axle sleeve.
4. according to claim 1 and 2 or 3 described built-up gears, it is characterized in that: described keyway is the flat key keyway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205369714U CN202851873U (en) | 2012-10-19 | 2012-10-19 | Combined gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205369714U CN202851873U (en) | 2012-10-19 | 2012-10-19 | Combined gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851873U true CN202851873U (en) | 2013-04-03 |
Family
ID=47983078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205369714U Expired - Fee Related CN202851873U (en) | 2012-10-19 | 2012-10-19 | Combined gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202851873U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896062A (en) * | 2015-05-26 | 2015-09-09 | 湖州民强炭业有限公司 | Combined structure gear |
| CN106151468A (en) * | 2016-07-25 | 2016-11-23 | 迪百仕电机科技（苏州）有限公司 | A kind of turbine and worm decelerator |
| CN106545640A (en) * | 2015-09-17 | 2017-03-29 | 李天天 | A kind of built-up gear |
| CN108799456A (en) * | 2017-05-05 | 2018-11-13 | 沃得精机(中国)有限公司 | A kind of packaging technology of sprocket wheel lug component |
| CN112780756A (en) * | 2021-01-19 | 2021-05-11 | 临海市海世达机械有限公司 | Single gear box with wheel axles on two sides |
-
2012
- 2012-10-19 CN CN2012205369714U patent/CN202851873U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896062A (en) * | 2015-05-26 | 2015-09-09 | 湖州民强炭业有限公司 | Combined structure gear |
| CN104896062B (en) * | 2015-05-26 | 2017-10-31 | 温州大学激光与光电智能制造研究院 | A kind of composite construction gear |
| CN106545640A (en) * | 2015-09-17 | 2017-03-29 | 李天天 | A kind of built-up gear |
| CN106151468A (en) * | 2016-07-25 | 2016-11-23 | 迪百仕电机科技（苏州）有限公司 | A kind of turbine and worm decelerator |
| CN108799456A (en) * | 2017-05-05 | 2018-11-13 | 沃得精机(中国)有限公司 | A kind of packaging technology of sprocket wheel lug component |
| CN112780756A (en) * | 2021-01-19 | 2021-05-11 | 临海市海世达机械有限公司 | Single gear box with wheel axles on two sides |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20181019 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |