Coupling for speed reducer

Abstract

The utility model relates to the technical field of couplings, and discloses a coupler for a speed reducer, which comprises a first connecting rod, the right end of the first connecting rod is fixedly connected with a damping ring, the inner wall of the damping ring is fixedly connected with a ring body, the inner wall of the ring body is fixedly provided with a rotating rod, and the outer wall of the rotating rod is fixedly connected with a piston plate. The outer wall of one side of the piston plate is fixedly connected with a damping shaft, one end of the damping shaft is fixedly connected with an oil seal ring, the outer wall of the oil seal ring is slidably connected with an inner cylinder, the outer wall of the damping shaft is slidably connected with a cylinder cover, and the oil seal ring is provided with a through hole. According to the shock-absorbing oil seal, the shock-absorbing ring and the ring body are fixedly connected, and the ring body and the oil storage chambers are alternately distributed, so that the oil seal ring slides in the inner cylinder, shock-absorbing oil between the inner cylinder and the oil seal ring is extruded, meanwhile, the shock-absorbing oil enters the other side of the oil seal ring through the through hole, pressure difference is generated, and the effect of reducing vibration of the coupler is achieved.

Description

Technical Field

[0001] This utility model relates to the field of coupling technology, and in particular to a coupling for a speed reducer. Background Technology

[0002] A speed reducer is an independent component consisting of gear transmission, worm transmission, or gear-worm transmission enclosed in a rigid housing. It is commonly used as a speed reduction transmission device between the prime mover and the working machine. A coupling is a device that connects two shafts or a shaft and a rotating component, allowing them to rotate together during the transmission of motion and power.

[0003] In mechanical transmission systems, the gearbox coupling, as a key component connecting the gearbox and the drive equipment, directly affects the stability and efficiency of the entire transmission system. Traditional gearbox couplings, during torque transmission, often experience significant loads due to motor starting or braking, leading to substantial vibration and impact. This vibration and impact not only reduce transmission efficiency and increase energy consumption but also damage the gearbox, drive equipment, and the entire transmission system, shortening its service life. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a coupling for a speed reducer, which aims to solve the problem that the large vibration and impact generated by the coupling not only reduces transmission efficiency and increases energy consumption, but also damages the speed reducer, drive equipment and the entire transmission system, and shortens its service life.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coupling for a speed reducer, comprising a connecting rod, a shock-absorbing ring fixedly connected to the right end of the connecting rod, a driven shaft fixedly disposed on the right side of the shock-absorbing ring, a ring body fixedly connected to the inner wall of the shock-absorbing ring, a rotating rod fixedly disposed on the inner wall of the ring body, a piston plate fixedly connected to the outer wall of the rotating rod, an oil reservoir disposed inside the shock-absorbing ring, the piston plate disposed inside the oil reservoir, a shock-absorbing shaft fixedly connected to one side of the outer wall of the piston plate, an oil seal ring fixedly connected to one end of the shock-absorbing shaft, an inner cylinder slidably connected to the outer wall of the oil seal ring, a cylinder cover slidably connected to the outer wall of the shock-absorbing shaft, the outer wall of the cylinder cover fixedly connected to the inner wall of the inner cylinder, a through hole disposed on the oil seal ring, and the inner cylinder disposed inside the ring body.

[0006] Preferably, the oil storage chamber and the ring are alternately distributed inside the shock-absorbing ring, and the inner cylinder and the shock-absorbing shaft are arc-shaped and on the same center as the shock-absorbing ring.

[0007] Preferably, the outer wall of the driven shaft passes through the right side of the shock-absorbing ring, and the left end of the driven shaft is fixedly connected to the right outer wall of the rotating rod.

[0008] Preferably, a spring is provided on the outer wall of the shock-absorbing shaft, and the spring is disposed between the oil seal ring and the cylinder cover.

[0009] Preferably, a connecting sleeve is connected to the outer wall of the left end of the connecting rod, a coupling plate is fixedly connected to the left side of the connecting sleeve, a connecting bolt is threaded onto the coupling plate, a drive shaft is fixedly connected to the left side of the coupling plate, and a motor is fixedly mounted on the left side of the drive shaft.

[0010] Preferably, an input shaft is internally connected to the driven shaft, a speed reducer is fixedly installed on the right side of the input shaft, and an output shaft is fixedly installed on the right side of the speed reducer.

[0011] Preferably, the drive shaft, connecting sleeve, and driven shaft are all provided with a retaining block, and the retaining block is provided with a fixing bolt.

[0012] Preferably, the fixing bolt and the drive shaft, the connecting sleeve and the driven shaft are all threadedly connected, and the output end of the motor, the connecting rod and the input shaft are all provided with grooves, which fit into the locking block.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the fixed connection between the shock-absorbing ring and the ring body, the fixed arrangement of the shock-absorbing ring and the rotating rod, and the alternating distribution of the ring body and the oil storage chamber, along with the action of inertia, cause the oil seal ring to slide in the inner cylinder, thereby squeezing the shock-absorbing oil between the inner cylinder and the oil seal ring. At the same time, the shock-absorbing oil enters the other side of the oil seal ring through the through hole, generating a pressure difference that acts on the shock-absorbing shaft, thereby reducing the transmission of vibration to the piston plate and the rotating rod, and achieving the reduction of coupling vibration.

[0015] 2. In this utility model, by fixing the drive shaft, connecting sleeve and coupling plate, by threading the coupling plate and connecting bolts, by connecting the connecting sleeve and connecting rod, and by fixing the connecting rod and damping ring, vibration is reduced while precision and torque are transmitted without loss. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a coupling for a speed reducer proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the shock-absorbing ring of a coupling for a speed reducer proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure at the drive shaft of a coupling for a speed reducer proposed in this utility model;

[0019] Figure 4This is a schematic diagram of the vibration damping module structure of a coupling for a speed reducer proposed in this utility model.

[0020] Legend:

[0021] 1. Motor; 2. Clamping block; 3. Fixing bolt; 4. Shock-absorbing ring; 5. Output shaft; 6. Reducer; 7. Input shaft; 8. Driven shaft; 9. Connecting rod; 10. Connecting sleeve; 11. Coupling plate; 12. Connecting bolt; 13. Drive shaft; 14. Piston plate; 15. Ring body; 16. Oil reservoir; 17. Shock-absorbing shaft; 18. Rotating rod; 19. Groove; 20. Inner cylinder; 21. Oil seal ring; 22. Spring; 23. Cylinder cover; 24. Through hole. Detailed Implementation

[0022] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Reference Figures 1-4 An embodiment of this utility model provides a coupling for a speed reducer, including a connecting rod 9. A damping ring 4 is fixedly connected to the right end of the connecting rod 9. A driven shaft 8 is fixedly installed on the right side of the damping ring 4. A ring body 15 is fixedly connected to the inner wall of the damping ring 4. A rotating rod 18 is fixedly installed on the inner wall of the ring body 15. A piston plate 14 is fixedly connected to the outer wall of the rotating rod 18. An oil storage chamber 16 is provided inside the damping ring 4. The piston plate 14 is located in the oil storage chamber 16. A damping shaft 17 is fixedly connected to one side of the outer wall of the piston plate 14. An oil seal ring 21 is fixedly connected to one end of the damping shaft 17. An inner cylinder 20 is slidably connected to the outer wall of the oil seal ring 21. A cylinder cover 23 is slidably connected to the outer wall of the damping shaft 17. The outer wall of the cylinder cover 23 is fixedly connected to the inner wall of the inner cylinder 20. A through hole 24 is provided on the oil seal ring 21. The inner cylinder 20 is located inside the ring body 15.

[0024] In this embodiment, Figure 1The inner cylinder 20 is oriented in all directions (front, back, left, right). It contains damping oil. When the connecting rod 9 rotates, it drives the damping ring 4 to rotate. Through the fixed connection between the damping ring 4 and the ring body 15, the ring body 15 rotates in the same direction and at the same speed, causing the inner cylinder 20 to rotate. Due to inertia, the inner cylinder 20 and the oil seal ring 21 move relative to each other, thus compressing the damping oil between them. This forces the damping oil through the through hole 24 to enter the other side of the oil seal ring 21, thereby generating… The pressure difference reduces the transmission of vibration; and after the piston plate 14 contacts the ring 15, the rotating rod 18 begins to rotate at the same speed and in the same direction as the connecting rod 9; when the connecting rod 9 stops rotating, the ring 15 comes to a standstill, while the rotating rod 18 continues to rotate under the action of inertia, driving the piston plate 14 to continue rotating, thereby allowing the damping oil to enter one side of the oil seal ring 21 through the through hole 24, generating a pressure difference, reducing the transmission of vibration caused by the sudden stop of the connecting rod 9, thus achieving the reduction of coupling vibration.

[0025] Reference Figures 2-4 The oil reservoir 16 and the ring 15 are alternately distributed inside the shock-absorbing ring 4. The inner cylinder 20 and the shock-absorbing shaft 17 are arc-shaped and are on the same center as the shock-absorbing ring 4. Specifically, there are five oil reservoirs 16 and five rings 15, so that the shock-absorbing oil in one of the inner cylinders 20 is always between the inner cylinder 20 and the oil seal ring 21 to achieve its shock absorption effect. Through the arc-shaped design of the inner cylinder 20 and the shock-absorbing shaft 17, the resistance of the piston plate 14 to the shock-absorbing shaft 17 and the inner cylinder 20 during the rotation process is reduced, and the service life of the device is improved.

[0026] Reference Figure 1 The outer wall of the driven shaft 8 passes through the right side of the damping ring 4, and the left end of the driven shaft 8 is fixedly connected to the right outer wall of the rotating rod 18. Through the rotating rod 18, the driven shaft 8 is driven to rotate, thereby transmitting the rotation of the connecting rod 9 to the driven shaft 8. The damping force of the device is transmitted to the driven shaft 8, thus realizing the transmission of the damping effect of the device.

[0027] Reference Figures 2-4 A spring 22 is provided on the outer wall of the damping shaft 17. The spring 22 is located between the oil seal ring 21 and the cylinder cover 23. Specifically, when the connecting rod 9 stops suddenly, the vibration transmission is reduced by the flow of damping oil inside the inner cylinder 20, and the vibration is reduced by the contraction of the spring 22 between the oil seal ring 21 and the cylinder cover 23.

[0028] Reference Figure 1A connecting sleeve 10 is connected to the outer wall of the left end of the connecting rod 9. A coupling plate 11 is fixedly connected to the left side of the connecting sleeve 10. A connecting bolt 12 is threaded onto the coupling plate 11. A drive shaft 13 is fixedly connected to the left side of the coupling plate 11. A motor 1 is fixedly mounted on the left side of the drive shaft 13. There are two coupling plates 11, which are connected and fixed by the connecting bolt 12. When the motor 1 starts running, the rotation of the output end of the motor 1 drives the drive shaft 13 to rotate. Through the threaded connection between the coupling plate 11 and the connecting bolt 12, the lossless transmission of accuracy and torque is achieved.

[0029] Reference Figure 1 An input shaft 7 is connected inside the driven shaft 8. A reducer 6 is fixedly installed on the right side of the input shaft 7, and an output shaft 5 is fixedly installed on the right side of the reducer 6. Specifically, the rotation of the output end of the motor 1 is transmitted to the damping ring 4 through the connection of the connecting rod 9 and the connecting sleeve 10. After the vibration is reduced by the damping ring 4, the rotation is transmitted to the reducer 6 through the connection of the driven shaft 8 and the input shaft 7, and finally output through the output shaft 5, thus reducing the impact of vibration on the reducer 6.

[0030] Reference Figure 1 The drive shaft 13, the connecting sleeve 10 and the driven shaft 8 are all equipped with a locking block 2, and the locking block 2 is equipped with a fixing bolt 3. The locking block 2 and the fixing bolt 3 enable the modularization of the equipment and improve the convenience of maintenance.

[0031] Reference Figures 1-3 The fixing bolt 3 and the drive shaft 13, the connecting sleeve 10 and the driven shaft 8 are all threadedly connected. The output end of the motor 1, the connecting rod 9 and the input shaft 7 are all provided with grooves 19, and the grooves 19 and the locking block 2 are fitted into each other. Specifically, the output end of the motor 1 is placed inside the drive shaft 13, the locking block 2 is passed through the drive shaft 13 and the lower side of the locking block 2 is slid into the groove 19, the fixing bolt 3 is passed through the locking block 2 and threadedly connected to the drive shaft 13. In this way, the connecting sleeve 10 and the connecting rod 9, the driven shaft 8 and the input shaft 7 are connected together by the locking block 2 and the fixing bolt 3, thus completing the assembly of the device and improving the assembly efficiency of the device.

[0032] Working principle: When using this device, the output end of motor 1, drive shaft 13, connecting sleeve 10, connecting rod 9, driven shaft 8, and input shaft 7 are connected and fixed together by the clamp 2 and fixing bolt 3. When motor 1 is started, the rotation of the output end of motor 1 drives the drive shaft 13 to rotate, and the rotation is transmitted to the damping ring 4 through the threaded connection of coupling plate 11 and connecting bolt 12. Through the fixed connection between damping ring 4 and ring body 15, the ring body 15 is driven to rotate in the same direction and at the same speed, thereby causing the inner cylinder 20 to rotate. Under the action of inertia, the rotation of the inner cylinder 20 compresses the shock-absorbing oil, thereby pushing the oil seal ring 21 to slide in the inner cylinder 20. As the piston plate 14 contacts the ring 15, the rotating rod 18 begins to rotate at the same speed and in the same direction as the connecting rod 9. When the connecting rod 9 stops rotating, the rotating rod 18 continues to rotate under the action of inertia, driving the piston plate 14 to continue rotating. This allows the shock-absorbing oil to enter one side of the oil seal ring 21 through the through hole 24, generating a pressure difference. The contraction of the spring 22 between the oil seal ring 21 and the cylinder cover 23 increases the absorption of vibration, reducing the vibration caused by the sudden stop of the connecting rod 9, thus achieving the effect of reducing the vibration of the coupling.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coupling for a speed reducer, comprising a connecting rod (9), characterized in that: A shock-absorbing ring (4) is fixedly connected to the right end of the connecting rod (9). A driven shaft (8) is fixedly installed on the right side of the shock-absorbing ring (4). A ring body (15) is fixedly connected to the inner wall of the shock-absorbing ring (4). A rotating rod (18) is fixedly installed on the inner wall of the ring body (15). A piston plate (14) is fixedly connected to the outer wall of the rotating rod (18). An oil storage chamber (16) is provided inside the shock-absorbing ring (4). The piston plate (14) is located inside the oil storage chamber (16). A damping shaft (17) is fixedly connected to one side of the outer wall of the plug plate (14). An oil seal ring (21) is fixedly connected to one end of the damping shaft (17). An inner cylinder (20) is slidably connected to the outer wall of the oil seal ring (21). A cylinder cover (23) is slidably connected to the outer wall of the damping shaft (17). The outer wall of the cylinder cover (23) is fixedly connected to the inner wall of the inner cylinder (20). A through hole (24) is provided on the oil seal ring (21). The inner cylinder (20) is located inside the ring body (15).

2. The coupling for a speed reducer according to claim 1, characterized in that: The oil storage chamber (16) and the ring body (15) are alternately distributed inside the shock-absorbing ring (4). The inner cylinder (20) and the shock-absorbing shaft (17) are arc-shaped and are on the same center as the shock-absorbing ring (4).

3. The coupling for a speed reducer according to claim 1, characterized in that: The outer wall of the driven shaft (8) passes through the right side of the shock-absorbing ring (4), and the left end of the driven shaft (8) is fixedly connected to the right outer wall of the rotating rod (18).

4. A coupling for a speed reducer according to claim 1, characterized in that: A spring (22) is provided on the outer wall of the shock-absorbing shaft (17), and the spring (22) is located between the oil seal ring (21) and the cylinder cover (23).

5. A coupling for a speed reducer according to claim 1, characterized in that: A connecting sleeve (10) is connected to the outer wall of the left end of the connecting rod (9). A coupling plate (11) is fixedly connected to the left side of the connecting sleeve (10). A connecting bolt (12) is threaded onto the coupling plate (11). A drive shaft (13) is fixedly connected to the left side of the coupling plate (11). A motor (1) is fixedly installed on the left side of the drive shaft (13).

6. A coupling for a speed reducer according to claim 1, characterized in that: An input shaft (7) is connected inside the driven shaft (8). A speed reducer (6) is fixedly installed on the right side of the input shaft (7), and an output shaft (5) is fixedly installed on the right side of the speed reducer (6).

7. A coupling for a speed reducer according to claim 5, characterized in that: The drive shaft (13), connecting sleeve (10) and driven shaft (8) are all provided with a locking block (2), and the locking block (2) is provided with a fixing bolt (3).

8. A coupling for a speed reducer according to claim 7, characterized in that: The fixing bolt (3) and the drive shaft (13), the connecting sleeve (10) and the driven shaft (8) are all threadedly connected. The output end of the motor (1), the connecting rod (9) and the input shaft (7) are all provided with grooves (19), and the grooves (19) and the locking block (2) are fitted together.

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