CN202228602U - Gear speed reducer - Google Patents
Gear speed reducer Download PDFInfo
- Publication number
- CN202228602U CN202228602U CN2011203516894U CN201120351689U CN202228602U CN 202228602 U CN202228602 U CN 202228602U CN 2011203516894 U CN2011203516894 U CN 2011203516894U CN 201120351689 U CN201120351689 U CN 201120351689U CN 202228602 U CN202228602 U CN 202228602U
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- CN
- China
- Prior art keywords
- gear
- transmission shaft
- shaft
- driven
- keyway
- 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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Abstract
The utility model relates to a speed reducer, in particular to a gear speed reducer, which comprises a box body, a driving transmission shaft, an intermediate transmission shaft and a driven transmission shaft, wherein the driving transmission shaft, the intermediate transmission shaft and the driven transmission shaft are movably supported on the box body. The box body is fixedly connected with an end cover through a bolt, a first driving gear is installed on the driving transmission shaft, a first driven gear and a second driving gear are installed on the intermediate transmission shaft, and a second driven gear is installed on the driven transmission shaft. The first driving gear is meshed with the first driven gear, the second driving gear is meshed with the second driven gear, and double key grooves are arranged on the driving transmission shaft, the intermediate transmission shaft and the driven transmission shaft and symmetrically distributed with the transmission shafts as central lines. By means of the structure, the double key grooves arranged on the transmission shafts can improve extrusion strength of keys and enable the keys to bear large torque.
Description
Technical field
The utility model relates to a kind of speed reducer, particularly a kind of gear reduction unit.
Background technique
Have keyway in the gear reduction unit on the transmission shaft, be used for installing gear, realize gearing down.Keyway receives the extruding from each side easily when work, need bear certain torque.Need to increase the crushing strength of keyway now, make it can bear bigger torque.
China utility model patent specification CN2913732Y discloses a kind of gear reduction unit; Comprise casing and movable supporting main drive shaft, intermediate propeller shaft and the passive transmission shaft on casing, casing connects end cap through bolt, and a master gear is installed on the main drive shaft; Install one on the intermediate propeller shaft by gear and two master gears; Be equipped with two by gear on the passive transmission shaft, a master gear is meshed by gear with one, and master gear with and be meshed by gear; One master gear and one is that 2, two master gears and two are the double circular arc tooth of modulus 3.5 by gear by the modulus of gear.Though the gear reduction unit volume of this utility model patent is little, noise is low, transmission efficiency is high; But the keyway crush resistance strength of main drive shaft, intermediate propeller shaft and passive transmission shaft is low; The torque that can bear is less, makes the life-span of whole gear reduction unit be affected.
Summary of the invention
The utility model technical issues that need to address provide a kind of gear reduction unit that can bear bigger torque.
For solving above-mentioned technical problem; The gear reduction unit of the utility model comprises casing and movable supporting main drive shaft, intermediate propeller shaft and the passive transmission shaft on casing, and casing connects end cap through bolt, and a master gear is installed on the main drive shaft; Install one on the intermediate propeller shaft by gear and two master gears; Be equipped with two by gear on the passive transmission shaft, a master gear is meshed by gear with one, and two master gears are meshed by gear with two; Have two keyways on said main drive shaft, intermediate propeller shaft and the passive transmission shaft, said pair of keyway is symmetrically distributed about the center transmission shaft line.
After adopting said structure, have the crushing strength that two keyways can increase key on the transmission shaft, make it can bear bigger torque.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Fig. 1 is the utility model structural representation.
Fig. 2 is the structural representation of first kind of mode of execution of the utility model keyway.
Fig. 3 is the structural representation of second kind of mode of execution of the utility model keyway.
Among the figure: 1 is main drive shaft, and 2 is intermediate propeller shaft, and 3 is passive transmission shaft, and 4 is a master gear, and 5 is one by gear, and 6 is two master gears, and 7 is two by gear, and 8 is keyway
Embodiment
Mode of execution one:
Gear reduction unit as shown in Figure 1; Comprise casing and movable supporting main drive shaft 1, intermediate propeller shaft 2 and the passive transmission shaft 3 on casing, casing connects end cap through bolt, and a master gear 4 is installed on the main drive shaft 1; Install one on the intermediate propeller shaft 2 by gear 5 and two master gears 6; Be equipped with two on the passive transmission shaft 3 and be meshed by gear 5 with one by gear 7, one master gears 4, two master gears 6 are meshed by gear 7 with two.Motor inputs to main drive shaft 1 with power; One master gear 4 and one is driven intermediate propeller shaft 2 rotations by gear 5; Intermediate propeller shaft 2 drives 6 rotations of two master gears, and two master gears 6 are driven passive transmission shaft 3 through two by gear 7 and rotate, and passive transmission shaft 3 outputs power.Have two keyways on said main drive shaft 1, intermediate propeller shaft 2 and the passive transmission shaft 3, said pair of keyway is exactly two keyways 8, and said pair of keyway is symmetrically distributed about the center transmission shaft line.It is in order to increase the crushing strength of key, to make it can bear bigger torque that each transmission shaft is driven two keyways.
As shown in Figure 2, the joint at said keyway 8 ends and middle part is provided with fillet, and said keyway 8 is shaped as track shape.The purpose that keyway 8 is provided with fillet is to concentrate in order to reduce stress.
Mode of execution two:
As shown in Figure 3, shown in the miscellaneous part of second kind of mode of execution all identical with mode of execution one, be the round rectangle that is shaped as of said keyway 8, the purpose that keyway 8 is set to round rectangle is to concentrate in order to reduce stress equally.
Certainly, the shape of keyway 8 is not limited to shape related in the mode of execution in the utility model, and keyway 8 also can adopt other shapes that is suitable for, and such conversion all drops within the scope of the utility model protection.
Claims (4)
1. gear reduction unit; Comprise casing and movable supporting main drive shaft, intermediate propeller shaft and the passive transmission shaft on casing, casing connects end cap through bolt, and a master gear is installed on the main drive shaft; Install one on the intermediate propeller shaft by gear and two master gears; Be equipped with two by gear on the passive transmission shaft, a master gear is meshed by gear with one, and two master gears are meshed by gear with two; It is characterized in that: have two keyways on said main drive shaft, intermediate propeller shaft and the passive transmission shaft, said pair of keyway is symmetrically distributed about the center transmission shaft line.
2. according to the described gear reduction unit of claim 1, it is characterized in that: the joint at said splined end and middle part is provided with fillet.
3. according to the described gear reduction unit of claim 2, it is characterized in that: said keyway shape is a track shape.
4. according to the described gear reduction unit of claim 2, it is characterized in that: said keyway shape is a round rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203516894U CN202228602U (en) | 2011-09-20 | 2011-09-20 | Gear speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203516894U CN202228602U (en) | 2011-09-20 | 2011-09-20 | Gear speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202228602U true CN202228602U (en) | 2012-05-23 |
Family
ID=46079189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203516894U Expired - Fee Related CN202228602U (en) | 2011-09-20 | 2011-09-20 | Gear speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202228602U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763776A (en) * | 2015-04-16 | 2015-07-08 | 凤阳县鼎盛矿山设备有限公司 | Mill |
| CN105546099A (en) * | 2016-01-26 | 2016-05-04 | 张立 | Industrial speed reducer |
-
2011
- 2011-09-20 CN CN2011203516894U patent/CN202228602U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763776A (en) * | 2015-04-16 | 2015-07-08 | 凤阳县鼎盛矿山设备有限公司 | Mill |
| CN105546099A (en) * | 2016-01-26 | 2016-05-04 | 张立 | Industrial speed reducer |
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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: 20120523 Termination date: 20150920 |
|
| EXPY | Termination of patent right or utility model |