CN211259532U - Harmonic reducer taking external load offset into consideration - Google Patents
Harmonic reducer taking external load offset into consideration Download PDFInfo
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- CN211259532U CN211259532U CN201922165404.7U CN201922165404U CN211259532U CN 211259532 U CN211259532 U CN 211259532U CN 201922165404 U CN201922165404 U CN 201922165404U CN 211259532 U CN211259532 U CN 211259532U
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- belt pulley
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Abstract
The utility model discloses a harmonic reducer considering external load offset, which comprises a shell, wherein a harmonic transmission assembly is arranged in the shell and comprises a wave generator, two ends of the wave generator are respectively and coaxially connected with an input shaft and an output shaft, two ends of the input shaft are respectively a first end of the input shaft and a second end of the input shaft, and the first end of the input shaft extends out of a bearing hole arranged on an end cover of the shell; the synchronous belt pulley comprises a connecting flange, a belt pulley seat and a belt pulley, wherein a shaft hole of the connecting flange is connected with a first end of an input shaft through a key, a flange plate of the connecting flange is connected with the end surface of the belt pulley through a bolt, the belt pulley seat comprises a wheel seat flange disc part and a sleeve part, the wheel seat flange disc part is connected with an end cover through a bolt, the sleeve part is sleeved outside the shaft hole of the connecting flange, and a bearing chamber and a bearing are arranged between the outer circumferential surface of the sleeve part and the inner circumferential surface of the belt pulley; the utility model discloses a harmonic speed reducer ware improves harmonic speed reducer ware's transmission precision, improves harmonic speed reducer ware's life.
Description
Technical Field
The utility model belongs to the technical field of the harmonic speed reducer ware technique and specifically relates to indicate a consider eccentric harmonic speed reducer ware of external load.
Background
Harmonic reducers are known to be mechanical actuators that rely on flexible parts to generate controlled elastic mechanical waves to transmit power and motion. The known harmonic reducer generally comprises a wave generator, a rigid gear, a flexible gear, an input shaft, an output shaft, a shell and other structures, and is generally made into a complete machine for facilitating performance test and use. Have among the prior art through the adoption with synchronous pulley and harmonic reducer shaft adopt the tight connected mode of expanding of tight cover that expands to in improving positioning accuracy, adopt such structure, when external force direct action appears on input/output shaft, make the axle produce flexural deformation and radial force, the coaxial error of input with the output has been increaseed, be unfavorable for harmonic reducer's precision drive, and the axle directly bears the external load, can appear reducing harmonic reducer life's problem, consequently, the above-mentioned problem all waits urgently to be solved.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned problem that exists among the prior art, the utility model provides a harmonic speed reducer ware compares in traditional harmonic speed reducer ware, and the installation of being convenient for more need not to make a round trip to send equipment, and the material resources of using manpower sparingly, the application and popularization of being convenient for.
In order to achieve the above effects, the utility model discloses a harmonic reducer adopts following technical scheme:
a harmonic reducer that accounts for external load bias, comprising:
the harmonic drive device comprises a shell, wherein a harmonic drive assembly is arranged in the shell, the harmonic drive assembly comprises a wave generator, two ends of the wave generator are respectively and coaxially connected with an input shaft and an output shaft, two ends of the input shaft are respectively a first end of the input shaft and a second end of the input shaft, and the first end of the input shaft extends out of a bearing hole formed in an end cover of the shell;
the synchronous belt pulley comprises a connecting flange, a belt pulley seat and a belt pulley, wherein a shaft hole of the connecting flange is connected with the first end of the input shaft through a key, a flange plate of the connecting flange is connected with the end surface of the belt pulley through a bolt, the belt pulley seat comprises a wheel seat flange disc part and a sleeve part, the wheel seat flange disc part is connected with the end cover through a bolt, the sleeve part is sleeved outside the shaft hole of the connecting flange, and a bearing chamber and a bearing are arranged between the outer circumferential surface of the sleeve part and the inner circumferential surface of the belt pulley.
Preferably, the second end of the input shaft is connected with the wave generator; the two ends of the output shaft are respectively a first end of the output shaft and a second end of the output shaft, the first end of the output shaft extends out of a shaft hole formed in the shell, and the second end of the output shaft is connected with the wave generator.
Preferably, the wave generator includes a cam, and a rigid gear and a flexible gear coupled to each other, the cam is mounted to a middle portion of the input shaft through a key and a positioning sleeve, the rigid gear is fixed to an inner wall of the housing through a bolt, a bearing is disposed between an inner circumferential surface of the rigid gear and an outer circumferential surface of the cam, and the flexible gear is connected to an end surface of the second end of the output shaft through a bolt.
Preferably, an inner hole is formed in the end face of the second end of the output shaft, and the second end of the input shaft is provided with a step shaft sleeved with the bearing and penetrates into the inner hole in a matched mode.
Preferably, a bearing is provided between the output shaft and the inner wall of the housing.
Preferably, the bearings are arranged in two groups in parallel, and the two groups of bearings are separated by a top ring.
Preferably, an annular groove is arranged on the inner disc surface of the connecting flange, and a shaft elastic retainer ring is embedded in the annular groove.
Preferably, two sets of bearings are arranged in the bearing chamber, and the two sets of bearings are separated by a spacer.
Compared with the prior art, the utility model discloses a consider eccentric harmonic speed reducer ware of external load, not the single key-type connection that passes through between the input shaft of reduction gear and the synchronous pulley, but adopted special pulley block, bearing chamber and flange's mode has reduced the influence of radial biasing power to the input shaft, has improved harmonic speed reducer ware's transmission precision, also is favorable to improving harmonic speed reducer ware's life simultaneously.
Drawings
Fig. 1 is a front view of an embodiment of the present invention.
Description of reference numerals:
1-shell 11-bearing hole 12-end cover 2-wave generator 21-cam 22-rigid gear 23-flexible gear 24-positioning shaft sleeve 3-input shaft 31-input shaft first end 32-input shaft second end 4-output shaft 41-output shaft first end 42-output shaft second end 43-inner hole 5-synchronous pulley 51-connecting flange 52-pulley seat 521-pulley seat flange plate portion 522-sleeve portion 53-pulley 54-key 55-bearing chamber 56-bearing 6-top ring 7-elastic retainer ring 8-spacer bush.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, for convenience of illustration, the sectional views showing the structure of the device will not be enlarged partially according to the general scale, and the schematic drawings are only examples, and should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Referring to fig. 1, the present embodiment provides a harmonic reducer considering external load offset, including a housing 1 and a synchronous pulley 5, where a harmonic transmission assembly is disposed in the housing 1, the harmonic transmission assembly includes a wave generator 2, two ends of the wave generator 2 are respectively and coaxially connected to an input shaft 3 and an output shaft 4, two ends of the input shaft 3 are respectively an input shaft first end 31 and an input shaft second end 32, and the input shaft first end 31 extends out of a bearing hole 11 disposed on an end cover 12 of the housing 1; the synchronous pulley 5 comprises a connecting flange 51, a pulley seat 52 and a pulley 53, wherein a shaft hole of the connecting flange 51 is connected with the first end 31 of the input shaft through a key 54, a flange plate of the connecting flange 51 is connected with the end surface of the pulley 53 through a bolt, the pulley seat 52 comprises a pulley seat flange plate portion 521 and a sleeve portion 522, the pulley seat flange plate portion 521 is connected with the end cover 12 through a bolt, the sleeve portion 522 is sleeved outside the shaft hole of the connecting flange 51, and a bearing chamber 55 and a bearing 56 are formed between the outer circumferential surface of the sleeve portion 522 and the inner circumferential surface of the pulley 53.
By the structure, the bearing 56 and the pulley seat 52 with the buffer function are arranged between the input shaft 3 and the synchronous pulley 5 of the harmonic reducer, so that the input shaft 3 and the synchronous pulley 5 are not connected only by key connection, but are connected in a connection mode with low rigidity, the influence of radial force on the input shaft 3 is reduced, and the service life of the harmonic reducer is prolonged.
In particular, the input shaft second end 32 is connected to the wave generator 2; two ends of the output shaft 4 are respectively an output shaft first end 41 and an output shaft second end 42, the output shaft first end 41 extends out of a shaft hole arranged on the shell 1, and the output shaft second end 42 is connected with the wave generator 2.
Further, the wave generator 2 includes a cam 21 and a rigid gear 22 and a flexible gear 23 coupled to each other, the cam 21 is mounted to the middle of the input shaft 3 through a key and a positioning sleeve 24, the rigid gear 22 is fixed to the inner wall of the housing 1 through a bolt, a bearing 56 is disposed between the inner circumferential surface of the rigid gear 22 and the outer circumferential surface of the cam 21, and the flexible gear 23 is connected to the end surface of the second end 42 of the output shaft through a bolt.
Further, an inner hole 43 is formed in an end surface of the output shaft second end 42, and the input shaft second end 32 is provided with a step shaft sleeved with the bearing 56 and penetrates into the inner hole 43 in a matched manner.
Further, a bearing 56 is provided between the output shaft 4 and the inner wall of the housing 1.
Further, the bearings are arranged in two groups in parallel, and the two groups of bearings 56 are separated by the top ring 6.
Further, an annular groove is arranged on the inner disc surface of the connecting flange 51, and a shaft elastic retainer ring 7 is embedded in the annular groove.
Further, two sets of bearings 56 are disposed in the bearing chamber 55, and the two sets of bearings 56 are separated by the spacer 8.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.
Claims (8)
1. A harmonic reducer taking into account external load bias, comprising:
the harmonic drive device comprises a shell, wherein a harmonic drive assembly is arranged in the shell, the harmonic drive assembly comprises a wave generator, two ends of the wave generator are respectively and coaxially connected with an input shaft and an output shaft, two ends of the input shaft are respectively a first end of the input shaft and a second end of the input shaft, and the first end of the input shaft extends out of a bearing hole formed in an end cover of the shell;
the synchronous belt pulley comprises a connecting flange, a belt pulley seat and a belt pulley, wherein a shaft hole of the connecting flange is connected with the first end of the input shaft through a key, a flange plate of the connecting flange is connected with the end surface of the belt pulley through a bolt, the belt pulley seat comprises a wheel seat flange disc part and a sleeve part, the wheel seat flange disc part is connected with the end cover through a bolt, the sleeve part is sleeved outside the shaft hole of the connecting flange, and a bearing chamber and a bearing are arranged between the outer circumferential surface of the sleeve part and the inner circumferential surface of the belt pulley.
2. The external load offset tolerant harmonic reducer of claim 1 wherein the input shaft second end is connected to the wave generator; the two ends of the output shaft are respectively a first end of the output shaft and a second end of the output shaft, the first end of the output shaft extends out of a shaft hole formed in the shell, and the second end of the output shaft is connected with the wave generator.
3. The harmonic reducer in consideration of external load offset according to claim 2, wherein the wave generator comprises a cam and a rigid gear and a flexible gear coupled to each other, the cam is mounted to a middle portion of the input shaft by a key and a locating boss, the rigid gear is fixed to an inner wall of the housing by a bolt, a bearing is provided between an inner circumferential surface of the rigid gear and an outer circumferential surface of the cam, and the flexible gear is connected to an end surface of the second end of the output shaft by a bolt.
4. The harmonic reducer considering external load offset as claimed in claim 3, wherein the end face of the second end of the output shaft is provided with an inner hole, and the second end of the input shaft is provided with a step shaft sleeved on the bearing and matched to penetrate into the inner hole.
5. The external load offset tolerant harmonic reducer of claim 4 in which a bearing is provided between the output shaft and the housing inner wall.
6. The external load offset tolerant harmonic reducer of claim 5 in which the bearings are arranged in two sets side by side, the two sets being separated by a top ring.
7. The harmonic reducer considering external load offset according to claim 5, wherein an annular groove is formed on the inner disk surface of the connecting flange and a circlip for the shaft is embedded.
8. The external load offset tolerant harmonic reducer of claim 5 wherein two sets of bearings are disposed in the bearing chamber, the two sets of bearings being separated by a spacer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922165404.7U CN211259532U (en) | 2019-12-05 | 2019-12-05 | Harmonic reducer taking external load offset into consideration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922165404.7U CN211259532U (en) | 2019-12-05 | 2019-12-05 | Harmonic reducer taking external load offset into consideration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211259532U true CN211259532U (en) | 2020-08-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922165404.7U Active CN211259532U (en) | 2019-12-05 | 2019-12-05 | Harmonic reducer taking external load offset into consideration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211259532U (en) |
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2019
- 2019-12-05 CN CN201922165404.7U patent/CN211259532U/en active Active
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