CN211449591U - Speed reducer for underwater operation - Google Patents
Speed reducer for underwater operation Download PDFInfo
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- CN211449591U CN211449591U CN202020029557.9U CN202020029557U CN211449591U CN 211449591 U CN211449591 U CN 211449591U CN 202020029557 U CN202020029557 U CN 202020029557U CN 211449591 U CN211449591 U CN 211449591U
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Abstract
The utility model belongs to the technical field of the reduction gear equipment, concretely relates to reduction gear that underwater operation used. The speed reducer solves the problems that the existing speed reducer for underwater operation is short in service life and not compact in structure. This reduction gear that underwater operation used, including casing, output shaft and motor shaft, its characterized in that, the casing is integrated into one piece structure, is equipped with thrust bearing in the casing, and through-hole one and through-hole two have been seted up at the both ends of casing, and the output shaft passes through-hole one, and the tip of output shaft pegs graft on thrust bearing, motor shaft's one end is passed through-hole two and is stretched into in the casing, and motor shaft and the coaxial setting of output shaft, the terminal surface next-door neighbour that motor shaft and output shaft are relative sets up and has the clearance, still be equipped with the transmission shaft in the casing, motor shaft passes through. The utility model discloses an improve reduction gear life and the compact structure that underwater operation used.
Description
Technical Field
The utility model belongs to the technical field of the reduction gear equipment, concretely relates to reduction gear that underwater operation used.
Background
The reducer in the current mechanism for transmitting power and motion has a wide application range, and can be seen in the transmission system of almost all kinds of machines, from the heavy machines for ships, automobiles and locomotives of vehicles and buildings, the processing machines and automatic production equipment used in the mechanical industry, to the common electric clock and watch in daily life, and the like. The application of the speed reducer can be seen from the transmission work of large power to the transmission of small load and accurate angle, and the speed reducer has the functions of speed reduction and torque increase in industrial application, so that the speed reducer is widely applied to speed and torque conversion equipment.
In recent years, the national demand for environmental protection is rising, the requirements for sewage discharge and treatment are higher and higher, a higher sewage discharge standard is established, and a sewage treatment process is improved. The technical content of mechanical equipment is higher and higher, and the quantity of the mechanical equipment is also larger and larger.
The common reducer is applied to sewage treatment equipment, and although the transmission ratio meets the requirement, the actual situation is not ideal, namely the common reducer has large volume, the structure of a speed reduction link is loose, and the requirements of compact arrangement of a diving structure and small volume and weight are not met; and secondly, the comprehensive mechanical strength is low, the impact resistance is poor and the failure rate is high in sewage application of transmission parts such as gears and bearings. And also limits the popularization and application of the speed reducer in sewage equipment.
Disclosure of Invention
The utility model aims at having the above-mentioned problem to current technique, provided a reduction gear that underwater operation used, the utility model aims to solve the technical problem that: the service life of the speed reducer for underwater operation is prolonged, and the structure is compact.
The purpose of the utility model can be realized by the following technical proposal:
the utility model provides a reduction gear that underwater operation used, includes casing, output shaft and motor shaft, its characterized in that, and the casing is the integrated into one piece structure, is equipped with thrust bearing in the casing, and through-hole one and through-hole two have been seted up at the both ends of casing, and the output shaft passes through-hole one, and the tip of output shaft pegs graft on thrust bearing, motor shaft's one end is passed through-hole two and is stretched into in the casing, and motor shaft and the coaxial setting of output shaft, the motor shaft has the clearance with the setting of the relative terminal surface next-door neighbour of output shaft, still be equipped with the transmission shaft in the casing.
The impeller is connected to the output shaft of the speed reducer for underwater operation, the rotation of the impeller can cause large axial recoil force to the output shaft, the rotation of the output shaft can also generate large axial and radial loads, the output shaft of the speed reducer for underwater operation is inserted into the thrust bearing, the thrust bearing can bear the axial recoil force generated by the rotation of the impeller and the rotation of the output shaft, the axial load and the radial load, the axial float of the output shaft is avoided, stable and reliable transmission is realized between the transmission shaft and the output shaft, stable and reliable transmission is also realized between the transmission shaft and the motor rotating shaft, and the service life of the speed reducer for underwater operation is obviously prolonged. The end face distance between the output shaft of the speed reducer for underwater operation and the motor rotating shaft is small, and the axial lead is coaxial, so the structure is more compact, the appearance of the speed reducer for underwater operation can be made into a cylinder shape, and the size of the speed reducer for underwater operation is smaller compared with the speed reducer with the output shaft and the motor rotating shaft which are not coaxial.
In the reducer for underwater operation, a first roller bearing is further arranged in the shell, the first roller bearing is located below the thrust bearing, and the transmission shaft is inserted into the first roller bearing. The transmission shaft is connected with the shell through the roller bearing I, so that the transmission shaft is rotatably arranged on the shell, and the roller bearing I can bear larger axial load and reduce the axial movement of the transmission shaft.
In the reducer for underwater operation, the transmission shaft is provided with a gear part, the output shaft is provided with a first gear meshed with the gear part, the transmission shaft is provided with a second gear, and the rotating shaft of the motor is provided with a third gear meshed with the second gear. And a third gear on the rotating shaft of the motor is meshed with a second gear on the transmission shaft to drive the transmission shaft to rotate, and a gear part on the transmission shaft is meshed with a first gear on the output shaft to drive the output shaft to rotate.
In the reducer for underwater operation, a second roller bearing is further arranged in the shell, the end part of the transmission shaft is inserted into the second roller bearing, and the second roller bearing is positioned below the output shaft. And the second roller bearing further prevents the axial movement of the transmission shaft, and prolongs the service life of the speed reducer for underwater operation.
In the reducer for underwater operation, the ball bearing is arranged between the first through hole and the output shaft, the shell is provided with an elastic check ring for preventing the ball bearing from falling off, and a waveform gasket is arranged between the elastic check ring and the ball bearing. The wave form gasket has the performance that prevents not hard up, the bradyseism, be equipped with good elasticity and shock resistance, set up it between ball bearing and circlip, because the wave form gasket can apply the axial pretightning force towards thrust bearing after the installation and prevent that thrust bearing from taking place axial displacement and axial float, improve thrust bearing's rigidity, can effectually prevent that the axial recoil force that the impeller rotation produced from to thrust bearing, ball bearing and the influence to the output shaft, improve reduction gear life that the operation was used under water.
Compared with the prior art, the speed reducer for underwater operation has the following advantages:
1. the thrust bearing can bear axial recoil force caused by rotation of the impeller, the rotation of the output shaft can generate larger axial and radial loads, the thrust bearing prevents axial movement of the output shaft, transmission failure between the output shaft and a motor rotating shaft is prevented, and the service life of the speed reducer for underwater operation is prolonged.
2. The setting of wave form gasket can give the thrust bearing pretightning force, has eliminated inside play behind the thrust bearing pretensioning, makes every roller all bear certain preload, is supporting the lasso from all directions, can improve rotation accuracy, makes the output shaft can pinpoint in axial and radial, prevents effectively that the axial recoil force that the impeller rotation produced from to ball bearing, thrust bearing and to the influence that the output shaft produced, improves the reduction gear life that the operation was used under water.
3. The output shaft and the motor rotating shaft are coaxially designed, so that the excircle of the speed reducer is designed to be cylindrical, and the structure of the speed reducer for underwater operation is more compact and the volume is smaller.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a partial enlarged view I of fig. 1.
In the figure, 1, a housing; 2. a thrust bearing; 3. a first through hole; 4. a second through hole; 5. an output shaft; 6. a motor shaft; 7. a drive shaft; 8a, a gear portion; 8b, a first gear; 9a, a second gear; 9b, a third gear; 10. a roller bearing I; 11. a roller bearing II; 12. a circlip; 13. a wave-shaped gasket; 14. ball bearings.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 2, the embodiment of the utility model provides a including casing 1, output shaft 5 and motor shaft 6, casing 1 is cylindricly, is equipped with the bearing mount pad in casing 1, and two bearing mounting holes about bearing mount pad and 1 an organic whole setting of casing have on the bearing mount pad, are equipped with thrust bearing 2 in the bearing mounting hole on bearing mount pad upper portion, are equipped with roller bearing 10 in the bearing mounting hole of bearing mount pad lower part. The two ends of the shell 1 are provided with a first through hole 3 and a second through hole 4, a ball bearing 14 is arranged in the first through hole 3, an elastic retainer ring 12 for preventing the ball bearing 14 from disengaging is further arranged in the first through hole 3, a waveform gasket 13 is arranged between the elastic retainer ring 12 and the ball bearing 14, an output shaft 5 is inserted in the ball bearing 14, and the end part of the output shaft 5, which is positioned in the shell 1, is inserted in the thrust bearing 2. One end of the motor rotating shaft 6 penetrates through the second through hole 4 and extends into the shell 1, the motor rotating shaft 6 and the output shaft 5 are coaxially arranged, and a gap is formed between the motor rotating shaft 6 and the end face, opposite to the output shaft 5, of the motor rotating shaft in an adjacent arrangement mode. Because the output shaft 5 and the motor rotating shaft 6 are coaxial and the end parts are arranged close to each other, the reducer for underwater operation can be made into a cylindrical shape, and the size is smaller compared with the case that the output shaft 5 and the motor rotating shaft 6 are not coaxial. The thrust bearing is specifically a compound thrust roller needle bearing, and the ball bearing 14 is specifically a deep groove ball bearing. In a traditional speed reducer for underwater operation, an output shaft 5 is connected with a shell 1 through a pair of tapered roller bearings, and if the output shaft 5 is connected with the shell 1 through the pair of tapered roller bearings, the installation hole diameter of a thrust bearing needs to be enlarged, the center distance of a transmission gear is enlarged, and the appearance of a product is enlarged. The device is deviated from the compact structure design of a speed device for underwater operation. The reducer for underwater operation has larger axial force, particularly axial impact force, generated by the impeller in practical application. The output shaft 5 of the speed reducer for underwater operation is arranged in the shell 1 through a deep groove ball bearing and a composite thrust roller needle bearing. The deep groove ball bearing can bear radial load and also can bear certain axial load. When the radial play of the bearing is increased, the bearing has the function of an angular contact bearing and can bear larger axial load. The needle roller bearing of the composite thrust roller bearing can bear radial force and can bear larger axial load. The axial bearing capacity is increased by selecting the two bearings, and the needle roller bearing of the composite type thrust roller bearing is small in size and can meet the requirement of compact structure.
As shown in fig. 1, a transmission shaft 7 is inserted into a roller bearing one 10, the transmission shaft 7 is connected with the housing 1 through the roller bearing one 10, so that the transmission shaft 7 is rotatably arranged on the housing 1, and the roller bearing one 10 can bear a large axial load and reduce the axial movement of the transmission shaft 7. One end of the transmission shaft 7 close to the output shaft 5 is provided with a gear part 8a, the output shaft 5 is provided with a gear 8b meshed with the gear part 8a, and the gear part 8a can be gear teeth processed on the transmission shaft 7 or a gear disc sleeved on the transmission shaft 7. A second gear 9a is arranged at one end of the transmission shaft 7 close to the motor rotating shaft 6, and a third gear 9b meshed with the second gear 9a is arranged on the motor rotating shaft 6. The third gear 9b on the motor rotating shaft 6 is meshed with the second gear 9a on the transmission shaft 7 to drive the transmission shaft 7 to rotate, and the gear part 8a on the transmission shaft 7 is meshed with the first gear 8b on the output shaft 5 to drive the output shaft 5 to rotate by the transmission shaft 7.
As shown in fig. 1, a bearing installation cavity is further arranged in the housing 1, the bearing installation cavity is coaxial with the transmission shaft 7, the bearing installation cavity is located below the output shaft 5, a second roller bearing 11 is arranged in the bearing installation cavity, and the end of the transmission shaft 7 is inserted into the second roller bearing 11. The first roller bearing 10 and the second roller bearing 11 are used in pairs, and the second roller bearing 11 further prevents the transmission shaft 7 from axially moving. Specifically, the first roller bearing and the second roller bearing are both tapered roller bearings.
As shown in fig. 1 and fig. 2, the wave washer 13 has the functions of preventing looseness, buffering impact, and having good elasticity and impact resistance, and is arranged between the ball bearing 14 and the elastic retainer ring 12, because the wave washer 13 can apply axial pretightening force to the thrust bearing 2 after being installed, the thrust bearing 2 is prevented from axial displacement and axial movement, the rigidity of the thrust bearing 2 is improved, and the influence of axial recoil force generated by rotation of the impeller on the ball bearing 14, the output shaft 5 and the thrust bearing 2 is effectively prevented; thrust bearing 2 can bear the impeller rotation and the produced axial recoil force of 5 rotations of output shaft, axial load and radial load, avoids output shaft 5 to take place the axial float, and output shaft 5 does not take place the axial float and can avoid causing the influence to the meshing between gear portion 8a and gear 8b to the gear teeth damage scheduling problem, show the life who promotes the reduction gear of underwater operation usefulness.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (5)
1. A speed reducer for underwater operation comprises a shell (1), an output shaft (5) and a motor rotating shaft (6), it is characterized in that the shell (1) is of an integrated structure, a thrust bearing (2) is arranged in the shell (1), a first through hole (3) and a second through hole (4) are arranged at two ends of the shell (1), an output shaft (5) passes through the first through hole (3), the end part of the output shaft (5) is inserted on the thrust bearing (2), one end of the motor rotating shaft (6) penetrates through the second through hole (4) and extends into the shell (1), the motor rotating shaft (6) and the output shaft (5) are coaxially arranged, the end surface of the motor rotating shaft (6) opposite to the output shaft (5) is provided with a gap in an adjacent way, still be equipped with transmission shaft (7) in casing (1), motor shaft (6) drive output shaft (5) through transmission shaft (7) and rotate.
2. A retarder for underwater operation according to claim 1, characterised in that a roller bearing (10) is arranged in the housing (1), the roller bearing (10) being located below the thrust bearing (2), the drive shaft (7) being inserted in the roller bearing (10).
3. A decelerator according to claim 2, wherein the transmission shaft (7) has a gear portion (8a), the output shaft (5) has a first gear (8b) engaged with the gear portion (8a), the transmission shaft (7) has a second gear (9a), and the motor shaft (6) has a third gear (9b) engaged with the second gear (9 a).
4. A decelerator for use in underwater operations as claimed in claim 3, wherein a second roller bearing (11) is further provided in the housing (1), the end of the drive shaft (7) is inserted into the second roller bearing (11), and the second roller bearing (11) is located below the output shaft (5).
5. A reducer for underwater operation according to claim 4, wherein a ball bearing (14) is provided between the first through hole (3) and the output shaft (5), a circlip (12) for preventing the ball bearing (14) from coming off is provided on the housing (1), and a wave-shaped gasket (13) is provided between the circlip (12) and the ball bearing (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020029557.9U CN211449591U (en) | 2020-01-07 | 2020-01-07 | Speed reducer for underwater operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020029557.9U CN211449591U (en) | 2020-01-07 | 2020-01-07 | Speed reducer for underwater operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211449591U true CN211449591U (en) | 2020-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020029557.9U Active CN211449591U (en) | 2020-01-07 | 2020-01-07 | Speed reducer for underwater operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211449591U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115854004A (en) * | 2023-02-27 | 2023-03-28 | 江苏泰隆减速机股份有限公司 | Underwater omnidirectional anti-impact vibration cylindrical helical tooth speed reducer |
-
2020
- 2020-01-07 CN CN202020029557.9U patent/CN211449591U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115854004A (en) * | 2023-02-27 | 2023-03-28 | 江苏泰隆减速机股份有限公司 | Underwater omnidirectional anti-impact vibration cylindrical helical tooth speed reducer |
| CN115854004B (en) * | 2023-02-27 | 2023-05-16 | 江苏泰隆减速机股份有限公司 | Cylindrical helical gear speed reducer capable of preventing underwater omnidirectional impact vibration |
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