Coupling with adjustable transmission torque

Abstract

The utility model provides a coupling with adjustable transmission torque, which relates to the technical field of transmission and comprises a first connecting shaft, a plurality of groups of holes are arranged in the first connecting shaft, fixing blocks are fixedly mounted in the holes, and a telescopic rod is fixedly mounted at one end, far away from the first connecting shaft, of each fixing block. The periphery of the telescopic rod is sleeved with a spring and fixedly connected with the fixing block, and the top end of the telescopic rod is fixedly connected with the fixing block. The side, close to the fixing block, of the first connecting shaft is movably connected with a second connecting shaft. According to the damping device, on one hand, by additionally arranging the spring and the damping ring in the connecting shaft, the damping effect of the device in the working process can be improved; and on the other hand, through fixed connection of a fastening block, a connecting rod and a nut, the first nut in threaded connection with the two-way screw can rotate through rotation of a rotary knob, the torque is adjusted more accurately through a graduated scale arranged on the periphery of the two-way screw, it is ensured that a transmission system operates in the optimal state, and the overall efficiency of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission, in particular to a transmission torque adjustable coupling. Background Art

[0002] A transmission torque adjustable coupling is a mechanical device used to connect two rotating shafts, which can flexibly adjust the transmitted torque according to the load conditions. Its structure generally includes a housing, an inner core and an adjustment mechanism. The inner core is made of elastic material and can effectively absorb vibration and shock. By rotating an external nut or adjusting a cam, the compression degree of the elastic element can be changed, thereby realizing torque adjustment. This coupling is widely used in fields such as motor drive, robotics and industrial automation, and has the advantages of flexibility, wear resistance and easy maintenance, which can improve the operation efficiency and reliability of equipment.

[0003] Although the existing device can effectively absorb vibration and shock, reduce noise and wear in mechanical transmission, and extend the service life of equipment, the existing device does not have a torque adjustable structure, cannot flexibly adjust the transmitted torque according to the actual load demand to adapt to different working conditions, and at the same time cannot ensure the operation of the transmission system in the best state by adjusting the torque in real time, so as to improve the overall efficiency of the device.

[0004] Therefore, we propose a transmission torque adjustable coupling. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the defects existing in the prior art. Although the existing device can effectively absorb vibration and shock, reduce noise and wear in mechanical transmission, and extend the service life of equipment, the existing device does not have a torque adjustable structure, cannot flexibly adjust the transmitted torque according to the actual load demand to adapt to different working conditions, and at the same time cannot ensure the operation of the transmission system in the best state by adjusting the torque in real time, so as to improve the overall efficiency of the device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A transmission torque adjustable coupling includes a first coupling shaft. A plurality of groups of holes are formed inside the first coupling shaft. A fixing block is fixedly installed in the hole. One end of the fixing block away from the first coupling shaft fixedly installs a telescopic rod. A spring is sleeved on the outer periphery of the telescopic rod and fixedly connected with the fixing block. The top end of the telescopic rod is fixedly connected with a fixing block;

[0008] The first coupling shaft is movably connected to a second coupling shaft on one side close to the fixing block. Fixing blocks are fixedly installed on one sides of the first coupling shaft and the second coupling shaft respectively. A connecting rod is fixedly installed on one side of the fixing block away from the first coupling shaft and the second coupling shaft. One end of the connecting rod away from the fixing block is fixedly connected to a first nut.

[0009] Preferably, the two first nuts are screwed and connected to both ends of the bidirectional screw, and limiting rings are fixedly installed at both ends of the bidirectional screw.

[0010] Preferably, a knob is fixedly installed on one side of the bidirectional screw close to the first coupling shaft.

[0011] Preferably, grooves for accommodating shock-absorbing rings are formed inside the first coupling shaft and the second coupling shaft, and they are movably connected to the shock-absorbing rings.

[0012] Preferably, a screw is fixedly installed on the top of the fixed block, and the screw is screwed and connected to the second nut.

[0013] Preferably, a scale is arranged on the outer periphery of the knob.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] In the present utility model, on the one hand, by adding a structure of a spring and a shock-absorbing ring inside the coupling shaft, the shock-absorbing effect of the device during operation can be improved; on the other hand, through the fixed connection of the fastening block, the connecting rod and the nut, the first nut screwed and connected to the bidirectional screw can be rotated by the rotation of the knob, and the torque can be adjusted more precisely through the scale arranged on the outer periphery of the bidirectional screw, ensuring that the transmission system operates in the best state and improving the overall efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. 1 is a schematic diagram of the overall structure of a transmission torque adjustable coupling provided by the present utility model;

[0017] Figure 2 FIG. 2 is an exploded view of the overall structure of a transmission torque adjustable coupling provided by the present utility model;

[0018] Figure 3 FIG. 3 is a sectional view of the overall structure of a transmission torque adjustable coupling provided by the present utility model;

[0019] Figure 4 FIG. 4 is an exploded view of the shock-absorbing part of a transmission torque adjustable coupling provided by the present utility model.

[0020] Legend: 1. First coupling shaft; 2. Second coupling shaft; 3. Shock-absorbing ring; 4. Bidirectional screw; 5. First nut; 6. Knob; 7. Connecting rod; 8. Fastening block; 9. Limiting ring; 10. Telescopic rod; 11. Spring; 12. Screw; 13. Second nut; 14. Fixed block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will describe the technical solutions in the embodiments of the present utility model in a clear and complete manner in combination with 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.

[0022] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant. Several embodiments of the present utility model are given. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixedly installed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] Embodiment 1

[0026] As Figures 1-4 shown, the present utility model provides a technical solution: a transmission torque adjustable coupling, including a first coupling shaft 1. A plurality of groups of holes are provided inside the first coupling shaft 1. A fixing block 14 is fixedly installed in the holes. One end of the fixing block 14 away from the first coupling shaft 1 is fixedly installed with a telescopic rod 10. A spring 11 is sleeved on the outer periphery of the telescopic rod 10 and is fixedly connected to the fixing block 14. The top end of the telescopic rod 10 is fixedly connected to a fixing block 14. By arranging the spring 11 inside the first coupling shaft 1, the purpose of shock absorption is achieved during the working process.

[0027] One side of the first coupling shaft 1 close to the fixed block 14 is movably connected with a second coupling shaft 2. Fastening blocks 8 are fixedly installed on one side of the first coupling shaft 1 and the second coupling shaft 2. A connecting rod 7 is fixedly installed on the side of the fastening block 8 away from the first coupling shaft 1 and the second coupling shaft 2. One end of the connecting rod 7 away from the fastening block 8 is fixedly connected to the first nut 5. By setting the fastening block 8, it is convenient to adjust the torque by pushing the first coupling shaft 1 and the second coupling shaft 2;

[0028] Embodiment 2

[0029] Two first nuts 5 are screwed and connected to both ends of the bidirectional screw rod 4. Limit rings 9 are fixedly installed at both ends of the bidirectional screw rod 4. A knob 6 is fixedly installed on the side of the bidirectional screw rod 4 close to the first coupling shaft 1. A scale is arranged on the outer circumference of the knob 6. Setting the scale can adjust more precisely;

[0030] Embodiment 3

[0031] Grooves for accommodating the damping rings 3 are respectively formed inside the first coupling shaft 1 and the second coupling shaft 2, and are movably connected with the damping rings 3. A screw rod 12 is fixedly installed on the top of the fixed block 14. The screw rod 12 is screwed and connected to the second nut 13. Movably connecting the damping rings 3 inside the first coupling shaft 1 and the second coupling shaft 2 increases the damping effect.

[0032] The working process of the present utility model:

[0033] Step 1: Connect the first coupling shaft 1 and the second coupling shaft 2 respectively between the motor shaft and the driving device to be assembled. By rotating the knob 6, the bidirectional screw rod 4 is driven to rotate. At this time, the first nut 5 screwed and connected with the bidirectional screw rod 4 moves. The fastening block 8 fixedly connected to the first nut 5 through the connecting rod 7. The scale arranged on the outer circumference of the bidirectional screw rod 4 can facilitate pushing the first coupling shaft 1 and the second coupling shaft 2 to a proper position;

[0034] Step 2: After moving to the proper position, rotate the second nut 13 to fix the positions of the first coupling shaft 1 and the second coupling shaft 2.

[0035] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A transmission torque adjustable coupling, comprising a first coupling shaft (1), characterized in that: Multiple groups of holes are formed inside the first coupling shaft (1), and fixing blocks (14) are fixedly installed inside the holes. One end of the fixing block (14) away from the first coupling shaft (1) fixedly installs a telescopic rod (10). A spring (11) is sleeved on the outer periphery of the telescopic rod (10) and fixedly connected to the fixing block (14). The top end of the telescopic rod (10) is fixedly connected to a fixing block (14). One side of the first coupling shaft (1) close to the fixing block (14) is movably connected to a second coupling shaft (2). Fixing blocks (8) are fixedly installed on one side of both the first coupling shaft (1) and the second coupling shaft (2). A connecting rod (7) is fixedly installed on one side of the fixing block (8) away from the first coupling shaft (1) and the second coupling shaft (2). One end of the connecting rod (7) away from the fixing block (8) is fixedly connected to a first nut (5).

2. The adjustable transmission torque coupling according to claim 1, characterized in that: The two first nuts (5) are screwed to both ends of a bidirectional screw rod (4). Limit rings (9) are fixedly installed at both ends of the bidirectional screw rod (4).

3. The adjustable transmission torque coupling according to claim 2, characterized in that: A knob (6) is fixedly installed on one side of the bidirectional screw rod (4) close to the first coupling shaft (1).

4. The adjustable transmission torque coupling according to claim 1, wherein: Grooves for accommodating damping rings (3) are formed inside both the first coupling shaft (1) and the second coupling shaft (2), and are movably connected to the damping rings (3).

5. A transmission torque adjustable coupling according to claim 1, characterized in that: A screw rod (12) is fixedly installed on the top of the fixing block (14), and the screw rod (12) is screwed to a second nut (13).

6. The adjustable transmission torque coupling according to claim 3, characterized in that: A scale is arranged on the outer periphery of the knob (6).

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