Coupling torque overload protection structure
By designing a torque overload protection structure for the coupling, the problem of sensitivity or insensitivity of existing overload protection structures is solved, enabling flexible control of overload torque and ensuring stable equipment operation and protection of the power unit.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU SUWAN UNIVERSAL JOINT
- Filing Date
- 2025-06-10
- Publication Date
- 2026-05-12
AI Technical Summary
Existing coupling torque overload protection structures cannot control the critical point of overload torque according to actual needs, resulting in overly sensitive or sluggish protection structures, affecting the continuous and stable operation of the equipment and the protection effect of the power unit.
By designing a coupling torque overload protection structure, including the cooperation of components such as housing, power shaft, transmission shaft, limit ring, limit block, slider, and spring, flexible control of the overload torque critical point can be achieved, avoiding frequent triggering of the protection mechanism or slow response.
It achieves the control of the critical point of overload torque according to actual needs, ensuring continuous and stable operation of the equipment, and timely disconnection, effectively protecting the power unit and device from damage.
Smart Images
Figure CN224229124U_ABST
Abstract
Description
Technical Field
[0001] This utility model specifically relates to a torque overload protection structure for couplings, belonging to the field of coupling protection technology. Background Technology
[0002] A coupling is a component that connects two different rotating bodies to transmit torque. It reduces the load during assembly and adjustment by absorbing axial misalignment between the rotating bodies. In the event of accidental overload, the coupling is broken, detaching the rotating bodies and protecting the expensive power unit and the entire device.
[0003] Currently, existing coupling torque overload protection structures on the market mostly suffer from the following shortcomings during use: They cannot control the critical point of overload torque according to actual needs. This leads to either overly sensitive protection structures that frequently trigger the protection mechanism, affecting the continuous and stable operation of the equipment, or sluggish protection structures that fail to disconnect the connection in time, thus failing to effectively protect the power unit and the entire device from damage, and thus failing to meet actual market demands. Therefore, we propose a new coupling torque overload protection structure. Utility Model Content
[0004] The purpose of this utility model is to provide a coupling torque overload protection structure to address the shortcomings of the existing technology and solve the problems mentioned in the background art.
[0005] This utility model achieves the above objective through the following technical solution: a coupling torque overload protection structure, comprising:
[0006] The base plate has a limiting block 1 and a limiting block 2 on its top. The top of the limiting block 1 and the limiting block 2 are respectively symmetrically and rotatably mounted with screw 2 and screw 1. The bottom ends of the two screw 1s extend through the limiting block 2 into the base plate, and the bottom ends of the two screw 2s extend through the limiting block 1 into the base plate. The sides of the limiting block 1 and the limiting block 2 that are far apart from each other are respectively provided with a limiting ring 1 and a limiting ring 2.
[0007] The outer casing is positioned between limiting block one and limiting block two. A sliding groove is formed on one side of the outer casing, and an L-shaped groove is formed on the circumferential wall of the outer casing. A power shaft and a transmission shaft are rotatably mounted inside the outer casing. One end of the power shaft passes through limiting block two and limiting ring two and extends to the outside. One end of the transmission shaft passes through limiting ring one and limiting block one and extends to the outside. A cylinder two is fixedly mounted on the circumferential wall of the power shaft and located in the sliding groove. A cylinder one is fixedly mounted on the circumferential wall of the transmission shaft and located in the L-shaped groove. A slider and a spring are sleeved on the transmission shaft. The slider and spring are located between the outer casing and limiting block one, and the spring is located between the outer casing and the slider.
[0008] Through the cooperation of the outer shell, power shaft, transmission shaft, limit ring one, limit block one, slider, spring, cylinder one, limit ring two, cylinder two, base plate, screw one, limit block two, and screw two, the critical point of overload torque can be controlled according to actual needs during use. This prevents the overload protection structure from being overly sensitive and frequently triggering the protection mechanism in actual applications. It will not affect the continuous and stable operation of the equipment, nor will it cause the protection structure to be slow to react and unable to disconnect in time. It effectively protects the power unit and the entire device from damage and meets the actual needs of the market.
[0009] Preferably, the second screw is threadedly connected to the first limiting block and the base plate, and the first screw is threadedly connected to the second limiting block and the base plate, so that under the action of the threads, rotating the second screw can fix the first limiting block and the base plate, and under the action of the threads, rotating the first screw can fix the second limiting block and the base plate.
[0010] Preferably, the first limiting ring is tightly welded to the drive shaft, and the second limiting ring is tightly welded to the power shaft, to ensure the structural stability of the first limiting ring and the drive shaft, and to guarantee the structural stability of the second limiting ring and the power shaft.
[0011] Preferably, the second cylinder and the slide groove are slidably connected, and the first cylinder and the L-shaped groove are slidably connected, ensuring that the second cylinder can slide normally in the slide groove and that the first cylinder can slide normally in the L-shaped groove.
[0012] Preferably, the drive shaft and the first limiting block are rotatably connected, and the power shaft and the second limiting block are rotatably connected, ensuring that the drive shaft can rotate normally within the first limiting block and that the power shaft can rotate normally within the second limiting block.
[0013] Preferably, the slider and the drive shaft are threaded together to ensure that the rotating slider can move left and right on the drive shaft under the action of the thread.
[0014] Preferably, the two ends of the spring are tightly welded to the slider and the outer shell, respectively, to ensure the structural stability of the spring, slider, and outer shell.
[0015] The beneficial effects of this utility model are:
[0016] This coupling torque overload protection structure, through the cooperation of the housing, power shaft, transmission shaft, limit ring one, limit block one, slider, spring, cylinder one, limit ring two, cylinder two, base plate, screw one, limit block two, and screw two, allows for control of the critical point of overload torque according to actual needs during use. This prevents the overload protection structure from being overly sensitive and frequently triggering the protection mechanism in practical applications, ensuring continuous and stable operation of the equipment and avoiding issues such as slow response and failure to disconnect the connection in a timely manner. It effectively protects the power unit and the entire device from damage, meeting the actual needs of the market. Attached Figure Description
[0017] Figure 1 This is one of the overall structural schematic diagrams of this utility model;
[0018] Figure 2 This is the second schematic diagram of the overall structure of this utility model;
[0019] Figure 3 This is a detailed structural diagram of the internal structure of the bottom plate of this utility model;
[0020] Figure 4 This is a detailed structural diagram of the internal structure of the outer shell in this utility model;
[0021] Figure 5 This is a schematic diagram of the outer shell area structure in this utility model.
[0022] In the diagram: 1. Outer shell; 2. L-shaped groove; 3. Slide groove; 4. Power shaft; 5. Transmission shaft; 6. Limiting ring one; 7. Limiting block one; 8. Slider; 9. Spring; 10. Cylinder one; 11. Limiting ring two; 12. Cylinder two; 13. Base plate; 14. Screw one; 15. Limiting block two; 16. Screw two. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figures 1-5 As shown, a torque overload protection structure for a coupling is described.
[0025] This embodiment includes:
[0026] The base plate 13 has a limit block 7 and a limit block 15 on its top. The top of the limit block 7 and the limit block 15 are respectively symmetrically rotated and installed with screws 16 and 14. The bottom ends of the two screws 14 extend through the limit block 15 into the base plate 13, and the bottom ends of the two screws 16 extend through the limit block 7 into the base plate 13. Limit rings 6 and 11 are respectively provided on the side of the limit blocks 7 and the limit blocks 15 that are far apart from each other.
[0027] The outer shell 1 is positioned between the first limiting block 7 and the second limiting block 15. A sliding groove 3 is provided on one side of the outer shell 1, and an L-shaped groove 2 is provided on the circumferential wall of the outer shell 1. A power shaft 4 and a transmission shaft 5 are rotatably installed inside the outer shell 1. One end of the power shaft 4 passes through the second limiting block 15 and the second limiting ring 11 and extends to the outside. One end of the transmission shaft 5 passes through the first limiting ring 6 and the first limiting block 7 and extends to the outside. A cylinder 12 is fixedly installed on the circumferential wall of the power shaft 4 and located in the sliding groove 3. A cylinder 10 is fixedly installed on the circumferential wall of the transmission shaft 5 and located in the L-shaped groove 2. A slider 8 and a spring 9 are sleeved on the transmission shaft 5. The slider 8 and the spring 9 are located between the outer shell 1 and the first limiting block 7, and the spring 9 is located between the outer shell 1 and the slider 8.
[0028] The design incorporates a housing 1, a power shaft 4, a transmission shaft 5, a first limiting ring 6, a first limiting block 7, a slider 8, a spring 9, a first cylinder 10, a second limiting ring 11, a second cylinder 12, a base plate 13, a first screw 14, a second limiting block 15, and a second screw 16. This allows for control of the critical point of overload torque according to actual needs during use. It prevents the overload protection structure from becoming overly sensitive and frequently triggering the protection mechanism in practical applications. It also ensures the continuous and stable operation of the equipment and avoids issues such as slow response and failure to disconnect the connection in a timely manner. This effectively protects the power unit and the entire device from damage, meeting the actual needs of the market.
[0029] In this embodiment, screw 16 is threadedly connected to limit block 7 and base plate 13, and screw 14 is threadedly connected to limit block 15 and base plate 13.
[0030] Specifically, it is ensured that under the action of the thread, rotating screw 16 can fix the limiting block 7 to the base plate 13, and that rotating screw 14 can fix the limiting block 15 and the base plate 13.
[0031] In this embodiment, the limiting ring 6 and the drive shaft 5 are tightly welded together, and the limiting ring 11 and the power shaft 4 are tightly welded together.
[0032] Among them, ensuring the structural stability of the first limiting ring 6 and the transmission shaft 5, and ensuring the structural stability of the second limiting ring 11 and the power shaft 4.
[0033] In this embodiment, cylinder 12 and groove 3 are slidably connected, and cylinder 10 and L-shaped groove 2 are slidably connected.
[0034] Specifically, this ensures that cylinder 12 can slide normally within the slide groove 3, and that cylinder 10 can slide normally within the L-shaped groove 2.
[0035] In this embodiment, the drive shaft 5 and the first limiting block 7 are rotatably connected, and the power shaft 4 and the second limiting block 15 are rotatably connected.
[0036] Specifically, this ensures that the drive shaft 5 can rotate normally within the first limit block 7, and that the power shaft 4 can rotate normally within the second limit block 15.
[0037] In this embodiment, the slider 8 and the drive shaft 5 are threaded together.
[0038] Specifically, it is ensured that the rotating slider 8 can move left and right on the drive shaft 5 under the action of the thread.
[0039] In this embodiment, the two ends of the spring 9 are tightly welded to the slider 8 and the outer shell 1, respectively.
[0040] This ensures the structural stability of the spring 9, the slider 8, and the housing 1.
[0041] Working principle: When the transmission shaft 5 is overloaded, the second cylinder 12 will slide out of the slide groove 3. At the same time, under the action of the slope of the slide groove 3 itself, the outer shell 1 will compress the spring 9 and generate greater elasticity. Meanwhile, under the action of the friction between the second cylinder 12 and the outer shell 1, the first cylinder 10 will also slide from one end of the L-shaped groove 2 to the other end. At the same time, the first cylinder 10, which has moved to the other end of the L-shaped groove 2, will limit the outer shell 1, so that the second cylinder 12 will not enter the slide groove 3 under the drive of the power shaft 4, and thus the second cylinder 12 will not drive the outer shell 1 to rotate.
[0042] When the torque of the drive shaft 5 is not overloaded, the rotating power shaft 4 will drive the cylinder 12 to rotate. The rotating cylinder 12 will drive the outer shell 1 to rotate through the friction with the slide groove 3. Then the rotating outer shell 1 will drive the cylinder 10 to rotate. Then the rotating cylinder 10 will drive the drive shaft 5 to rotate. At the same time, the elastic force of the spring 9 will cause the outer shell 1 to squeeze the cylinder 12, so that a large friction force will be generated between the outer shell 1 and the cylinder 12.
[0043] When it is necessary to increase the torque, simply rotate the slider 8. Under the action of the thread, the rotating slider 8 will compress the spring 9 and generate a large elastic force. At the same time, the elastic force generated by the spring 9 will act between the outer shell 1 and the slide groove 3, thereby increasing the friction between the outer shell 1 and the slide groove 3, thus increasing the torque.
[0044] When torque reduction is required, simply rotate slider 8 in the reverse direction. Under the action of the thread, the rotating slider 8 stretches spring 9 and generates a large pulling force. At the same time, the pulling force generated by spring 9 counteracts the force between housing 1 and slide 3, reducing the friction between housing 1 and slide 3, thereby reducing torque. This allows for control of the critical point of overload torque according to actual needs during use, preventing the overload protection structure from being overly sensitive and frequently triggering the protection mechanism in practical applications. It does not affect the continuous and stable operation of the equipment, nor does it cause the protection structure to be slow to react or fail to disconnect in time. It effectively protects the power unit and the entire device from damage, meeting the actual needs of the market.
[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A torque overload protection structure for a coupling, characterized in that, include: The base plate (13) has a limiting block 1 (7) and a limiting block 2 (15) on its top. The top of the limiting block 1 (7) and the limiting block 2 (15) are respectively symmetrically rotated and installed with screw 2 (16) and screw 1 (14). The bottom ends of the two screws 1 (14) extend through the limiting block 2 (15) into the base plate (13). The bottom ends of the two screws 2 (16) extend through the limiting block 1 (7) into the base plate (13). The sides of the limiting blocks 1 (7) and the limiting block 2 (15) that are far apart from each other are respectively provided with limiting ring 1 (6) and limiting ring 2 (11). The outer shell (1) is disposed between the first limiting block (7) and the second limiting block (15). A sliding groove (3) is provided on one side of the outer shell (1), and an L-shaped groove (2) is provided on the circumferential wall of the outer shell (1). A power shaft (4) and a transmission shaft (5) are rotatably installed inside the outer shell (1). One end of the power shaft (4) passes through the second limiting block (15) and the second limiting ring (11) and extends to the outside. One end of the transmission shaft (5) passes through the first limiting ring (6) and the second limiting ring (11). Limiting block 1 (7) extends to the outside. A cylinder 2 (12) is fixedly installed on the circumferential wall of the power shaft (4) and in the slide groove (3). A cylinder 1 (10) is fixedly installed on the circumferential wall of the transmission shaft (5) and in the L-shaped groove (2). A slider (8) and a spring (9) are sleeved on the transmission shaft (5). The slider (8) and the spring (9) are located between the outer shell (1) and the limiting block 1 (7). The spring (9) is located between the outer shell (1) and the slider (8).
2. The coupling torque overload protection structure as described in claim 1, characterized in that: The second screw (16) is threadedly connected to the first limiting block (7) and the base plate (13), and the first screw (14) is threadedly connected to the second limiting block (15) and the base plate (13).
3. The coupling torque overload protection structure as described in claim 1, characterized in that: The first limiting ring (6) and the drive shaft (5) are tightly welded together, and the second limiting ring (11) and the power shaft (4) are tightly welded together.
4. The coupling torque overload protection structure as described in claim 1, characterized in that: The second cylinder (12) and the groove (3) are slidably connected, and the first cylinder (10) and the L-shaped groove (2) are slidably connected.
5. The coupling torque overload protection structure as described in claim 1, characterized in that: The drive shaft (5) and the first limiting block (7) are rotatably connected, and the power shaft (4) and the second limiting block (15) are rotatably connected.
6. The coupling torque overload protection structure as described in claim 1, characterized in that: The slider (8) and the drive shaft (5) are threaded together.
7. The coupling torque overload protection structure as described in claim 1, characterized in that: The two ends of the spring (9) are tightly welded to the slider (8) and the outer shell (1), respectively.