A flexible coupling

Abstract

This utility model relates to the field of flexible couplings, specifically to a flexible coupling including a first coupling and a second coupling; the first coupling and the second coupling are sleeved on the outside of a transmission shaft. This utility model provides a flexible coupling by arranging a first coupling, a second coupling, a connecting sleeve, a first connecting block, a first half-groove, a telescopic sleeve rod, a spring, a second connecting block, a second half-groove, and elastic posts. The connecting sleeve inside the first coupling intersects with multiple sets of first connecting blocks and the second connecting blocks inside the second coupling, causing the first half-groove on both sides of the first connecting block to align with the second half-groove of the second connecting block to form a complete groove. The second half-groove is then inserted into the groove to create a compensating buffer. Simultaneously, multiple sets of telescopic sleeve rods inside the connecting sleeve and the external spring provide a buffering effect. The arrangement of multiple elastic posts, telescopic sleeve rods, and springs enhances the overall elasticity and buffering performance.

Description

Technical Field

[0001] This utility model relates to the field of flexible couplings, and specifically to a flexible coupling. Background Technology

[0002] A flexible coupling is a mechanical transmission device used to connect two shafts, enabling them to transmit torque and also providing functions such as compensating for relative displacement between the two shafts and damping vibrations. It is widely used in various mechanical transmission systems, especially in applications requiring vibration absorption, shock reduction, and compensation for axial and radial misalignments.

[0003] A search revealed a utility model of an elastic coupling with publication number CN216691921U. This coupling includes a drive shaft coupling, an elastomer, a housing, and a driven shaft coupling. One end of the drive shaft coupling is fixedly connected to a first connecting seat, the outer side of which is integrally formed with a first positioning tooth. The inner wall of the drive shaft coupling has a first coupling hole, and the inner wall of the driven shaft coupling has a second coupling hole. One end of the driven shaft coupling is fixedly connected to a second connecting seat, the outer side of which is integrally formed with a second positioning tooth. This utility model's elastic coupling features an external quincunx structure, allowing replacement of the flexible elastomer (a wear component) without moving the motor and gearbox. This minimizes the time spent aligning the motor output shaft and gearbox input shaft to improve performance. It eliminates the need for lubrication and securing, and the flexible polyurethane elastomer reduces the cost of regular maintenance.

[0004] In the above comparative cases, the flexible coupling simply achieves the elastic buffering effect through an elastic body. However, simply using an elastic body to compensate for the buffering effect is not ideal, resulting in insufficient compensation capacity, insufficient multi-directional displacement compensation, and weak vibration transmission suppression capability.

[0005] Therefore, it is necessary to invent a flexible coupling to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide an elastic coupling. Through the intersecting of a connecting sleeve inside the first coupling with multiple sets of first connecting blocks and a second connecting block inside the second coupling, the first half-grooves on both sides of the first connecting block and the second half-grooves of the second connecting block are aligned to form a complete groove. The second half-grooves are then inserted into the groove to form a compensation buffer. Simultaneously, multiple sets of telescopic sleeves inside the connecting sleeve and external springs provide a buffering effect. The arrangement of multiple sets of elastic columns, telescopic sleeves, and springs enhances the overall elasticity and buffering performance, thus solving the problems of the elastic couplings in the comparative cases mentioned in the background art, which simply achieve elastic buffering through an elastic body. However, simply using an elastic body for compensation and buffering is not ideal, resulting in insufficient compensation capacity, insufficient multi-directional displacement compensation, and weak vibration transmission suppression.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an elastic coupling, comprising a first coupling and a second coupling; The first coupling and the second coupling are sleeved on the outside of the drive shaft. The front end of the first coupling is threaded with a connecting sleeve. The outside of the first coupling is threaded with a first fixing bolt, which passes through the inside of the connecting sleeve. The outside of the connecting sleeve is fixedly connected with a first connecting block. The two sides of the first connecting block are provided with first half-hole slots. The inside of the connecting sleeve is fixedly connected with a connecting frame. The inside of the connecting frame is fixedly provided with a telescopic sleeve rod. The front end of the telescopic sleeve rod is sleeved with a spring. The second connecting blocks are all fixedly connected to the inner side of the second coupling. The second connecting blocks have second half-cut holes and grooves on both sides. An elastic column is sleeved between the first connecting block and the second connecting block.

[0008] Preferably, the first coupling is divided into two groups, and the first bolts pass through both sides of the first coupling in both groups.

[0009] Preferably, the second coupling is divided into two groups, and a second bolt passes through both sides of the second coupling in both groups.

[0010] Preferably, the telescopic sleeve is provided in multiple sets, and the multiple sets of telescopic sleeves are distributed in a ring array inside the connecting sleeve.

[0011] Preferably, the first connecting block inside the connecting sleeve is inserted into the second connecting block inside the second coupling, and a circular groove is formed between the first half-hole groove on both sides of the first connecting block and the second half-hole groove on both sides of the second connecting block.

[0012] Preferably, the outer side of the connecting sleeve is provided with threaded holes, the outer side of the elastic column abuts against a retaining ring, and a second fixing bolt passes through one side of the retaining ring and passes through the threaded hole provided on the outer side of the connecting sleeve.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows: This invention enhances the overall elasticity and buffering performance of the coupling by incorporating a first coupling, a second coupling, a connecting sleeve, a first connecting block, a first half-groove, a telescopic sleeve rod, a spring, a second connecting block, a second half-groove, and elastic posts. The connecting sleeve inside the first coupling intersects with multiple sets of first connecting blocks and the second connecting block inside the second coupling, causing the first half-groove on both sides of the first connecting block to align with the second half-groove of the second connecting block, forming a complete groove. The second half-groove is then inserted into the groove to create a buffering effect. Simultaneously, multiple sets of telescopic sleeve rods inside the connecting sleeve and the external spring contribute to the buffering effect. The arrangement of multiple elastic posts, telescopic sleeve rods, and springs further strengthens the overall elasticity and buffering performance. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the first coupling and connecting sleeve structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the connecting sleeve of this utility model; Figure 4 This is a schematic diagram of the second coupling structure of this utility model; Figure 5 This is a schematic diagram of the elastic column and retaining ring structure of this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. First coupling; 2. Second coupling; 3. Drive shaft; 4. First bolt; 5. Connecting sleeve; 6. First fixing bolt; 7. First connecting block; 8. First half-hole groove; 9. Threaded hole; 10. Connecting frame; 11. Telescopic sleeve rod; 12. Spring; 13. Second bolt; 14. Second connecting block; 15. Second half-hole groove; 16. Elastic column; 17. Snap ring; 18. Second fixing bolt. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0018] This utility model provides, for example Figure 1-5The flexible coupling shown includes a first coupling 1 and a second coupling 2; The first coupling 1 and the second coupling 2 are sleeved on the outside of the transmission shaft 3. The front end of the first coupling 1 is threaded with a connecting sleeve 5. The outside of the first coupling 1 is threaded with a first fixing bolt 6, which passes through the inside of the connecting sleeve 5. The outside of the connecting sleeve 5 is fixedly connected with a first connecting block 7. The two sides of the first connecting block 7 are provided with a first half-hole groove 8. The inside of the connecting sleeve 5 is fixedly connected with a connecting frame 10. The inside of the connecting frame 10 is fixedly provided with a telescopic sleeve rod 11. The front end of the telescopic sleeve rod 11 is sleeved with a spring 12. The second connecting block 14 is fixedly connected to the inner side of the second coupling 2. The second connecting block 14 has a second half-hole groove 15 on both sides. An elastic post 16 is sleeved between the first connecting block 7 and the second connecting block 14. The connecting sleeve 5 inside the first coupling 1 intersects with the first connecting block 7 and the second connecting block 14 inside the second coupling 2, so that the first half-hole groove 8 on both sides of the first connecting block 7 and the second half-hole groove 15 of the second connecting block 14 are connected to form a complete groove. Then the second half-hole groove 15 is inserted into the groove to form a compensation buffer. At the same time, the multiple sets of telescopic sleeve rods 11 inside the connecting sleeve 5 and the external spring 12 play a buffering role. The overall elasticity and buffering performance are enhanced by the setting of multiple sets of elastic posts 16, telescopic sleeve rods 11 and springs 12.

[0019] like Figure 1 and Figure 2 As shown, the first coupling 1 is divided into two groups. The first bolts 4 pass through both sides of the two groups of first couplings 1. The two groups of first couplings 1 are respectively sleeved on the outside of the transmission shaft 3. The protrusions on the outside of the transmission shaft 3 match the grooves inside the two groups of first couplings 1. The two groups of first couplings 1 are then fixed by the threads of the first bolts 4, which strengthens the installation firmness of the first coupling 1.

[0020] like Figure 1 and Figure 4 As shown, the second coupling 2 is divided into two groups, and the two groups of second coupling 2 are connected by second bolts 13 on both sides. The two groups of second coupling 2 are sleeved on the outside of the transmission shaft 3, and the two groups of second coupling 2 are connected by threads using multiple sets of second bolts 13, thereby strengthening the firmness of the second coupling 2.

[0021] like Figure 3 As shown, multiple sets of telescopic sleeve rods 11 are provided. These multiple sets of telescopic sleeve rods 11 are arranged in a circular array inside the connecting sleeve 5. When the multiple sets of telescopic sleeve rods 11 inside the connecting sleeve 5 swing between the connecting sleeve 5 and the second coupling 2, the spring 12 on the outside of the front end of the telescopic sleeve rod 11 enhances the buffering effect between them.

[0022] like Figure 3 , Figure 4 and Figure 5As shown, the first connecting block 7 inside the connecting sleeve 5 is inserted into the second connecting block 14 inside the second coupling 2. A circular groove is formed between the first half-hole groove 8 on both sides of the first connecting block 7 and the second half-hole groove 15 on both sides of the second connecting block 14. The connecting sleeve 5 inserts the first connecting block 7 on one side into the second connecting block 14 inside the second coupling 2 to form a circular groove. Then, multiple sets of elastic pillars 16 are inserted into the circular groove to enhance the elasticity and compensation buffer between the first connecting block 7 and the second connecting block 14.

[0023] like Figure 1 and Figure 5 As shown, threaded holes 9 are provided on the outside of the connecting sleeve 5, and a retaining ring 17 abuts against the outside of the elastic column 16. A second fixing bolt 18 passes through one side of the retaining ring 17 and passes through the threaded hole 9 on the outside of the connecting sleeve 5. When the elastic column 16 is inserted between the first connecting block 7 and the second connecting block 14, the retaining ring 17 is fitted around the elastic column 16 for limiting, and then the retaining ring 17 is fixed to the outside of the connecting sleeve 5 by the second fixing bolt 18.

[0024] The working principle of this utility model is as follows: First, two sets of first couplings 1 are fitted onto the outside of the left drive shaft 3, and the two sets of first couplings 1 are fixed to the outside using first bolts 4. Next, the connecting sleeve 5 is placed inside the first coupling 1, and the connecting sleeve 5 is fixed by the first fixing bolt 6 passing through both. Then, two sets of second couplings 2 are fitted onto the outside of the right drive shaft 3, and fixed to the connection using second bolts 13. Then, multiple second connecting blocks 14 on the inside of the second coupling 2 are mated at the gaps of the first connecting blocks 7 outside the connecting sleeve 5. When the two are mated, the rear end of the telescopic sleeve rod 11 inside the connecting sleeve 5 will abut against the inside of the second coupling 2. After the two are mated, multiple sets of elastic columns 16 are inserted into the first connecting blocks 7 and the second connecting blocks 14 respectively to splice them. The elastic column 16 is placed in a circular groove, and the other end of the elastic column 16 is against the connecting frame 10 inside the connecting sleeve 5 to improve stability. Finally, the retaining ring 17 is put on the elastic column 16 to limit and fix the elastic column 16. Then, the second fixing bolt 18 is used to pass through the retaining ring 17 and the threaded hole 9 outside the connecting sleeve 5 to limit and fix it. Afterwards, the drive shaft 3 will generate axial displacement during rotation. The multiple sets of elastic columns 16 play a good compensating role for the entire displacement or deformation. At the same time, when the multiple sets of telescopic sleeve rods 11 inside the connecting sleeve 5 shake between the second coupling 2, the spring 12 on the front end of the telescopic sleeve rod 11 rebounds, which strengthens the buffering effect between them. In this way, the use of the elastic coupling is completed.

[0025] The above description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A flexible coupling, characterized in that: Includes the first coupling (1) and the second coupling (2); The first coupling (1) and the second coupling (2) are sleeved on the outside of the transmission shaft (3). The front end of the first coupling (1) is threaded with a connecting sleeve (5). The outside of the first coupling (1) is threaded with a first fixing bolt (6) and the first fixing bolt (6) passes through the inside of the connecting sleeve (5). The outside of the connecting sleeve (5) is fixedly connected with a first connecting block (7). The first connecting block (7) has a first half-cut hole groove (8) on both sides. The inside of the connecting sleeve (5) is fixedly connected with a connecting frame (10). The inside of the connecting frame (10) is fixedly provided with a telescopic sleeve rod (11). The front end of the telescopic sleeve rod (11) is sleeved with a spring (12). The second connecting block (14) is fixedly connected to the inner side of the second coupling (2). The second connecting block (14) has a second half-cut hole groove (15) on both sides. An elastic column (16) is sleeved between the first connecting block (7) and the second connecting block (14).

2. The flexible coupling according to claim 1, characterized in that: The first coupling (1) is divided into two groups, and the first bolt (4) passes through both sides of the first coupling (1) in both groups.

3. The flexible coupling according to claim 1, characterized in that: The second coupling (2) is divided into two groups, and the two sides of the second coupling (2) are each connected by a second bolt (13).

4. The flexible coupling according to claim 1, characterized in that: The telescopic sleeve (11) is provided in multiple sets, and the multiple sets of the telescopic sleeve (11) are arranged in a ring array inside the connecting sleeve (5).

5. The flexible coupling according to claim 1, characterized in that: The first connecting block (7) inside the connecting sleeve (5) is inserted into the second connecting block (14) inside the second coupling (2). A circular groove is formed between the first half-hole groove (8) opened on both sides of the first connecting block (7) and the second half-hole groove (15) opened on both sides of the second connecting block (14).

6. The flexible coupling according to claim 1, characterized in that: The connecting sleeve (5) has threaded holes (9) on its outside. The elastic column (16) has a retaining ring (17) on its outside. A second fixing bolt (18) passes through one side of the retaining ring (17) and the second fixing bolt (18) passes through the threaded hole (9) on the outside of the connecting sleeve (5).

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