Novel hydraulic serpentine spring coupling
By adopting a separate plug-in design of the shaft sleeve and the gear disc in the hydraulic snake spring coupling, and setting a limit and anti-slip structure at the plug-in, the problem of high wear and replacement costs caused by the integrated design of the shaft sleeve and the gear disc in the prior art is solved, and a higher connection density and faster maintenance process is achieved.
Patent Information
- Application Number
- CN202422163659.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-09-04
AI Technical Summary
In the existing hydraulic snake spring coupling, the sleeve and the gear disc are integrated. After long-term use, the gear disc is prone to wear, resulting in the need to replace the entire sleeve, which increases the cost of use.
A new hydraulic snake-shaped spring coupling was designed, using the method of separate connection between the shaft sleeve and the gear disc, and a limit slot and limit teeth, an anti-slip disk and an anti-slip slot are set at the plug for pairing and plugging, increasing the tightness of the connection, and fixing the gear discs with multiple reinforcement bolts for easy replacement.
Through the separation of the plug-in design and limiting structure, the tightness of the connection is maximized, damage caused by the connection is reduced, and the gear plate replacement is simple and fast, reducing maintenance costs.
Smart Images
Figure CN222910571U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of couplings, and particularly relates to a new type of hydraulic serpentine spring coupling. Background Art
[0002] A coupling refers to a device that connects two shafts or a shaft and a rotating part, rotates together during the transmission of motion and power, and does not disengage under normal circumstances. A serpentine spring coupling is an advanced metal structure that transmits torque through serpentine spring plates. It is the most advanced shaft connection and transmission component in the international mechanical field today and is also a very common shaft connection and transmission component. The main structure of a serpentine spring coupling consists of two half couplings, two half outer covers, two sealing rings, and serpentine spring plates. Its advantages are good shock absorption, long service life, low noise, and good lubrication performance.
[0003] In the existing hydraulic serpentine spring coupling, the bushing and the gear disk are mostly integrally designed. After long-term use, the gear disk part is prone to wear. When the wear is severe, it cannot be used continuously, and at this time, the entire bushing needs to be replaced, greatly increasing the actual use cost. Content of the Utility Model
[0004] The technical problem to be solved by the utility model is that in the existing hydraulic serpentine spring coupling, the bushing and the gear disk are mostly integrally designed. After long-term use, the gear disk part is prone to wear, so the entire bushing needs to be replaced, resulting in a high cost.
[0005] To solve the above technical problem, the technical solution provided by the utility model is: a new type of hydraulic serpentine spring coupling, including two symmetrically arranged bushings, a serpentine spring, a sealing ring, and a housing. There is an installation gap between the two bushings. The inner side of the bushing is provided with a keyway for mating connection with an external shaft body. It is characterized in that: a gear disk is inserted at the bottom of the bushing. A plurality of square-wave-shaped limiting slots are arranged on the outer side of the bottom of the bushing, and a plurality of limiting teeth matching the shape of the limiting slots are arranged on the inner side of the gear disk. A gear-shaped anti-slip disk is arranged at the bottom of the bushing, and a corresponding anti-slip groove is arranged at the bottom of the gear disk at the position of the anti-slip disk. The gear disk is fixedly connected to the bottom of the bushing through a plurality of reinforcing bolts between the protection grooves. A plurality of tooth grooves for mating with the serpentine spring are arranged on the outer side of the gear disk; a combined plate is arranged on the outer side of the bottom of the bushing, and an annular oil storage cavity is arranged between the combined plate and the bushing. One end of the oil storage cavity is provided with an oil injection hole, and the other end is provided with a plurality of lubrication holes; the housing wraps the outside of the gear disk and the serpentine spring, and both ends of the housing are rotatably connected to the outer side of the bushing. A plurality of sealing grooves are arranged at the connection between the housing and the bushing, and the sealing ring is located in the sealing grooves.
[0006] Preferably, the diameters of the toothed disc and the shaft sleeve at the insertion joints of the limit slots and the multiple limit teeth are the same, and the height of the upper end surface of the toothed disc is 2 / 3 of the height of the multiple limit teeth.
[0007] Preferably, the multiple limit slots and the multiple limit teeth are both arranged in an annular array on the shaft sleeve and the toothed disc, and the number of the multiple limit slots is greater than 12.
[0008] Preferably, the thickness of the anti-slip disc at the bottom of the shaft sleeve is the same as the thickness of the anti-slip groove at the bottom of the toothed disc, and corresponding counterbore holes are provided at the positions of the multiple reinforcing bolts at the bottom of the toothed disc, and the outer end surfaces of the multiple reinforcing bolts are flush with the lower end surface of the toothed disc or are located inside the counterbore holes.
[0009] Preferably, the combined plate is fixedly welded to the shaft sleeve, and the connection position between the housing and the shaft sleeve is located in the middle of the combined plate.
[0010] Preferably, the oil injection hole is located outside the housing, and an oil plug is provided at the oil injection hole, and the multiple lubricating holes are located on one side of the housing close to the serpentine spring.
[0011] Preferably, the housing includes two semi-circular shells, corresponding connecting ears are provided at the four corners of the two shells, and the connecting parts are fixedly connected by the cooperation of connecting bolts and nuts.
[0012] Preferably, the depth of the sealing groove is 1-2 mm less than the transverse thickness of the sealing ring, and the number of the sealing grooves is two.
[0013] The advantages of the present utility model compared with the prior art are as follows:
[0014] This hydraulic serpentine spring coupling is connected by adopting the method of separating and inserting the shaft sleeve and the toothed disc, and limit slots, multiple limit teeth, a protective disc and an anti-slip groove are arranged at the insertion joint for paired insertion, so as to maximize the connection tightness, reduce the damage caused by connection, and at the same time adopt the insertion method for connection. By removing the multiple reinforcing bolts at the bottom of the toothed disc, replacement can be carried out, which is convenient and fast. Description of the Drawings
[0015] Figure 1 It is a structural diagram of a novel hydraulic serpentine spring coupling of the present utility model.
[0016] Figure 2 It is a sectional three-dimensional structural diagram of a novel hydraulic serpentine spring coupling of the present utility model.
[0017] Figure 3 It is a connection structural diagram of the shaft sleeve and the toothed disc of a novel hydraulic serpentine spring coupling of the present utility model.
[0018] Figure 4Shaft sleeve and tooth disc explosion structure of a new type of hydraulic serpentine spring coupling of the present utility model Figure 1 。
[0019] Figure 5 Shaft sleeve and tooth disc explosion structure of a new type of hydraulic serpentine spring coupling of the present utility model Figure 2 。
[0020] As shown in the figure:
[0021] 1. Shaft sleeve; 2. Serpentine spring; 3. Sealing ring; 4. Outer shell; 5. Installation gap; 6. Keyway; 7. Tooth disc; 8. Limit slot; 9. Multiple limit teeth; 10. Anti-slip disc; 11. Anti-slip groove; 12. Multiple reinforcing bolts; 13. Multiple tooth grooves; 14. Composite plate; 15. Oil storage cavity; 16. Oil injection hole; 17. Multiple lubricating holes; 18. Multiple sealing grooves; 19. Countersunk hole; 20. Oil plug; 21. Housing; 22. Connecting part; 23. Connecting bolt; 24. Nut Specific implementation mode
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0023] In the description of the utility model, it should be noted that unless otherwise clearly defined and limited, terms such as "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0024] Embodiment 1:
[0025] As shown in the specification appendix Figures 1-5As shown in the figure, a new type of hydraulic serpentine spring coupling 2 includes two symmetrically arranged shaft sleeves 1, a serpentine spring 2, a sealing ring 3, and a housing 4. There is an installation gap 5 between the two shaft sleeves 1. The inner side of the shaft sleeve 1 is provided with a keyway 6 for mating connection with an external shaft body. A toothed disc 7 is inserted at the bottom of the shaft sleeve 1. A plurality of square-wave-shaped limiting slots 8 are provided on the outer side of the bottom of the shaft sleeve 1, and a plurality of limiting teeth 9 matching the shape of the limiting slots 8 are provided on the inner side of the toothed disc 7. The diameter of the toothed disc 7 and the shaft sleeve 1 at the insertion position of the limiting slots 8 and the plurality of limiting teeth 9 is the same, and the height of the upper end surface of the toothed disc 7 is 2 / 3 of the height of the plurality of limiting teeth 9. The plurality of limiting slots 8 and the plurality of limiting teeth 9 are both arranged in a circular array on the shaft sleeve 1 and the toothed disc 7, and the number of the plurality of limiting slots 8 is greater than 12. A gear-shaped anti-slip disc 10 is provided at the bottom of the shaft sleeve 1, and a corresponding anti-slip groove 11 is provided at the bottom of the toothed disc 7 at the position of the anti-slip disc 10. The toothed disc 7 is fixedly connected to the bottom of the shaft sleeve 1 through a plurality of reinforcing bolts 12 between the protective grooves. The thickness of the anti-slip disc 10 at the bottom of the shaft sleeve 1 is the same as the thickness of the anti-slip groove 11 at the bottom of the toothed disc 7, and corresponding counterbore holes 19 are provided at the positions of the plurality of reinforcing bolts 12 at the bottom of the toothed disc 7. The outer end surfaces of the plurality of reinforcing bolts 12 are flush with the lower end surface of the toothed disc 7 or are located inside the counterbore holes 19. A plurality of tooth grooves 13 for mating with the serpentine spring 2 are provided on the outer side of the toothed disc 7.
[0026] In the present utility model, a combined plate 14 is provided on the outer side of the bottom of the shaft sleeve 1. The combined plate 14 is fixedly connected to the shaft sleeve 1 by welding, and the connection position between the housing 4 and the shaft sleeve 1 is located at the middle position of the combined plate 14. An annular oil storage cavity 15 is provided between the combined plate 14 and the shaft sleeve 1. An oil injection hole 16 is provided at one end of the oil storage cavity 15, and a plurality of lubricating holes 17 are provided at the other end. The oil injection hole 16 is located on the outer side of the housing 4, and an oil plug 20 is provided at the oil injection hole 16. The plurality of lubricating holes 17 are located on the inner side of the housing 4 close to the serpentine spring 2.
[0027] In the present utility model, the housing 4 wraps around the outer sides of the toothed disc 7 and the serpentine spring 2, and both ends of the housing 4 are rotatably connected to the outer sides of the shaft sleeves 1. The housing 4 includes two semi-circular shells 21. Corresponding connecting ears 22 are provided at the four corners of the two shells 4. The connecting part 22 is fixedly connected through the cooperation of connecting bolts 23 and nuts 24. A plurality of sealing grooves 18 are provided at the connection position between the housing 4 and the shaft sleeve 1. The sealing ring 3 is located in the sealing groove. The depth of the sealing groove is 1-2 mm less than the transverse thickness of the sealing ring 3, and the number of the sealing grooves is two.
[0028] When the present utility model is specifically implemented, an external mandrel is fixedly clamped to the keyway 6 inside the bushing 1 through a key, and after directly injecting lubricating oil at the oil injection hole 16, it can be used. During the rotation of the bushing 1 with the mandrel, the lubricating oil inside the oil storage cavity 15 is discharged from a plurality of lubricating holes 17 under the action of centrifugal force, thereby lubricating the serpentine spring 2 inside the housing 4; and by removing the connecting bolts 23 and nuts 24, the two semi-circular housings 21 can be opened, and the serpentine spring 2 inside can be removed to replace the toothed disc 7 on the bushing 1. Moreover, the toothed disc 7 can be separated from the bushing 1 for replacement through a plurality of reinforcing bolts 12. After replacement, when the plurality of limiting teeth 9 and protective grooves on the toothed disc 7 are buckled with the limiting slots 8 and anti-slip discs 10 at the bottom of the bushing 1, fixation through a plurality of reinforcing bolts 12 can complete the replacement. The whole process is simple and fast.
[0029] The above describes the present utility model and its implementation manners. Such description is not restrictive. What is shown in the specific implementation manners is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and, without departing from the creative concept of the present utility model, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present utility model.
Claims
1. A new type of hydraulic serpentine spring coupling, comprising two symmetrically arranged sleeves, a serpentine spring, a sealing ring and a housing, an installation gap is provided between the two sleeves, and a keyway is provided on the inner side of the sleeve to cooperate with the external shaft body, characterized in that: A toothed disc is inserted at the bottom of the sleeve, a plurality of square wave-shaped limiting slots are arranged on the outer side of the bottom of the sleeve, and a plurality of limiting teeth matching the shape of the limiting slots are arranged on the inner side of the toothed disc, a gear-shaped anti-skid disc is arranged at the bottom of the sleeve, and a corresponding anti-skid groove is arranged at the bottom of the toothed disc at the anti-skid disc, the toothed disc is located between the protective grooves and is fixedly connected to the bottom of the sleeve by a plurality of reinforcing bolts, and a plurality of tooth grooves assembled with a serpentine spring are arranged on the outer side of the toothed disc; A combination plate is arranged on the outer side of the bottom of the shaft sleeve, and an annular oil storage cavity is arranged between the combination plate and the shaft sleeve, wherein an oil filling hole is arranged at one end of the oil storage cavity, and a plurality of lubrication holes are arranged at the other end; The outer shell is wrapped around the outer side of the gear disc and the serpentine spring, and the two ends of the outer shell are rotatably connected to the outer side of the sleeve. A plurality of sealing grooves are arranged at the connection between the outer shell and the sleeve, and the sealing ring is located in the sealing groove.
2. A novel hydraulic serpentine spring coupling according to claim 1, characterized in that: The diameters of the toothed disc and the shaft sleeve at the limiting slot and the insertion position of the plurality of limiting teeth are the same, and the height of the upper end surface of the toothed disc is 2 / 3 of the height of the plurality of limiting teeth.
3. A new type of hydraulic serpentine spring coupling according to claim 1, characterized in that: The plurality of limiting slots and the plurality of limiting teeth are arranged in a ring array on the shaft sleeve and the toothed disc, and the number of the plurality of limiting slots is greater than twelve.
4. A novel hydraulic serpentine spring coupling according to claim 1, characterized in that: The thickness of the anti-skid disk at the bottom of the sleeve is the same as the thickness of the anti-skid groove at the bottom of the gear plate, and corresponding countersunk holes are provided at the bottom of the gear plate at multiple reinforcement bolts, and the outer end faces of the multiple reinforcement bolts are flush with the lower end face of the gear plate or located inside the countersunk holes.
5. The novel hydraulic serpentine spring coupling according to claim 1 is characterized in that: The combined plate and the shaft sleeve are welded and fixed, and the connection between the shell and the shaft sleeve is located in the middle of the combined plate.
6. A novel hydraulic serpentine spring coupling according to claim 1, characterized in that: The oil filling hole is located on the outside of the shell, and an oil plug is arranged at the oil filling hole. The plurality of lubrication holes are located inside the shell on one side close to the serpentine spring.
7. A novel hydraulic serpentine spring coupling according to claim 1, characterized in that: The housing comprises two semi-annular shells, and corresponding connecting ears are arranged at the four corners of the two shells. The connecting ears are fixedly connected by the cooperation of connecting bolts and nuts.
8. The novel hydraulic serpentine spring coupling according to claim 1 is characterized in that: The depth of the sealing groove is 1-2 mm less than the transverse thickness of the sealing ring, and the number of the sealing grooves is two.