An adjustable coupling

Abstract

This utility model relates to the field of couplings, specifically to an adjustable coupling, including a first coupling and a second coupling; the first coupling and the second coupling are respectively sleeved on the outside of a first drive shaft and a second drive shaft. This utility model's adjustable coupling, through the arrangement of a first coupling, a second coupling, an elastic connecting ring, a connecting rod, a connecting sleeve, a limiting block, a limiting groove, and a damping spring, allows for adjustment. By pressing the limiting block inside the connecting rod and then inserting the connecting rod into the connecting sleeve, the limiting block rebounds when the pressure is released, allowing the limiting block to be positioned in the limiting groove outside the connecting sleeve. Two sets of limiting grooves facilitate length adjustment. The elastic connecting ring is then sleeved between the first coupling and the second coupling. The elastic connecting ring is made of highly elastic and high-strength rubber; when the shafts are misaligned, the elastic connecting ring undergoes elastic deformation, thereby absorbing and buffering the additional load caused by the misalignment.

Description

Technical Field

[0001] This utility model relates to the field of couplings, specifically to an adjustable coupling. Background Technology

[0002] A coupling is a device that connects two shafts or a shaft and a rotating component, allowing them to rotate together during motion and power transmission, and remaining connected under normal conditions. Sometimes it is also used as a safety device to prevent the connected components from bearing excessive loads, thus providing overload protection.

[0003] Traditional couplings have poor adjustability. In mechanical systems, the axial dimension of the drive shaft may vary due to design, manufacturing errors, or installation requirements. Since the coupling has poor adjustability, it can only adapt to drive shafts with specific axial dimensions, which greatly limits its applicability. At the same time, the length of existing couplings is fixed and cannot be adjusted according to the installation conditions.

[0004] Therefore, it is necessary to invent an adjustable coupling to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide an adjustable coupling. By pressing the limiting block inside the connecting rod and then inserting the connecting rod into the connecting sleeve, the limiting block rebounds when the pressure is released, allowing the limiting block to be limited in the limiting groove outside the connecting sleeve. There are two sets of limiting grooves to facilitate length adjustment. Then, an elastic connecting ring is fitted between the first and second couplings. The elastic connecting ring is made of highly elastic and high-strength rubber. When the shafts are misaligned, the elastic connecting ring will undergo elastic deformation, thereby absorbing and buffering the additional load caused by misalignment. This solves the problem mentioned in the background art that traditional couplings have poor adjustability. In mechanical systems, the axial dimension of the transmission shaft may vary due to design, manufacturing errors, or installation requirements. If the coupling has poor adjustability, it can only adapt to transmission shafts with specific axial dimensions, which greatly limits its application range. At the same time, the length of existing couplings is fixed and cannot be adjusted according to the installation situation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable coupling, comprising a first coupling and a second coupling;

[0007] The first coupling and the second coupling are respectively sleeved on the outside of the first drive shaft and the second drive shaft. The outer threads of the first coupling and the second coupling pass through the first bolt, and the front end of the first bolt passes through the inside of the first drive shaft and the second drive shaft.

[0008] An elastic connecting ring is disposed between the first coupling and the second coupling for automatic adjustment and compensation. A connecting rod is fixedly connected inside the first coupling. A connecting sleeve is sleeved on the outside of the connecting rod. The rear end of the connecting sleeve is fixedly connected to the inside of the second coupling. A limit block is slidably connected inside the connecting rod. A limit groove is formed inside the upper part of the connecting sleeve.

[0009] Preferably, the inner surfaces of the first coupling and the second coupling are provided with grooves, and the outer surfaces of the first drive shaft and the second drive shaft are provided with protrusions, which are used in conjunction with the grooves.

[0010] Preferably, both ends of the elastic connecting ring are penetrated by second bolts, and the elastic connecting ring and the first coupling are threadedly connected to the second coupling.

[0011] Preferably, the upper part of the connecting rod has an installation groove, and a spring is fixedly connected inside the installation groove. The lower part of the limiting block is fixedly connected to the spring.

[0012] Preferably, the connecting sleeve has two sets of limiting grooves on its outside, and the limiting block slides with the limiting groove.

[0013] Preferably, a damping spring is fixedly connected inside the connecting sleeve, and the front end of the damping spring abuts against the rear end of the connecting rod.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] This utility model provides a mechanical component that, through the arrangement of a first coupling, a second coupling, an elastic connecting ring, a connecting rod, a connecting sleeve, a limiting block, a limiting groove, and a damping spring, can not only automatically adjust and compensate for errors during operation to achieve smooth transmission, but also adjust its length according to its installation position. By pressing the limiting block inside the connecting rod and then inserting the connecting rod into the connecting sleeve, the limiting block rebounds when the pressure is released, allowing the limiting block to be limited in the limiting groove outside the connecting sleeve. Two sets of limiting grooves facilitate length adjustment. Then, the elastic connecting ring is fitted between the first and second couplings. The elastic connecting ring is made of highly elastic and high-strength rubber. When the axes are misaligned, the elastic connecting ring will undergo elastic deformation, thereby absorbing and buffering the additional load caused by misalignment. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the first and second coupling structures of this utility model;

[0019] Figure 3 This is a schematic diagram of the elastic connecting ring structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the connecting rod and connecting sleeve structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the connecting sleeve of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. First coupling; 2. Second coupling; 3. First drive shaft; 4. Second drive shaft; 5. Groove; 6. First bolt; 7. Elastic connecting ring; 8. Second bolt; 9. Connecting rod; 10. Connecting sleeve; 11. Mounting groove; 12. Spring; 13. Limiting block; 14. Limiting groove; 15. Damping spring. Detailed Implementation

[0024] 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.

[0025] This utility model provides, for example Figure 1-5 An adjustable coupling is shown, comprising a first coupling 1 and a second coupling 2;

[0026] The first coupling 1 and the second coupling 2 are respectively sleeved on the outside of the first drive shaft 3 and the second drive shaft 4. The first bolt 6 is threaded through the outside of the first coupling 1 and the second coupling 2, and the front end of the first bolt 6 passes through the inside of the first drive shaft 3 and the second drive shaft 4.

[0027] An elastic connecting ring 7 is disposed between the first coupling 1 and the second coupling 2 for automatic adjustment and compensation. A connecting rod 9 is fixedly connected inside the first coupling 1, and a connecting sleeve 10 is sleeved on the outside of the connecting rod 9. The rear end of the connecting sleeve 10 is fixedly connected to the inside of the second coupling 2. A limit block 13 is slidably connected inside the connecting rod 9, and a limit groove 14 is opened inside the upper part of the connecting sleeve 10. By pressing the limit block 13 inside the connecting rod 9 and then inserting the connecting rod 9 into the connecting sleeve 10, when the limit block 13 loses pressure, the internal spring 12 rebounds, allowing the limit block 13 to be limited in the limit groove 14 outside the connecting sleeve 10. There are two sets of limit grooves 14 to facilitate length adjustment. Then, the elastic connecting ring 7 is sleeved between the first coupling 1 and the second coupling 2. The elastic connecting ring 7 is made of highly elastic and high-strength rubber. When the axis is misaligned, the elastic connecting ring 7 will undergo elastic deformation, thereby absorbing and buffering the additional load caused by misalignment.

[0028] like Figure 1 and Figure 2 As shown, the inner surfaces of the first coupling 1 and the second coupling 2 are provided with grooves 5, and the outer surfaces of the first drive shaft 3 and the second drive shaft 4 are provided with protrusions. The protrusions and grooves 5 are used in conjunction, and the grooves 5 inside the first coupling 1 and the second coupling 2 are engaged with the protrusions on the outer surfaces of the first drive shaft 3 and the second drive shaft 4, thereby strengthening the firmness between the first coupling 1 and the second coupling 2 and the first drive shaft 3 and the second drive shaft 4.

[0029] like Figure 2 and Figure 3 As shown, the elastic connecting ring 7 has a second bolt 8 through both ends. The elastic connecting ring 7 and the first coupling 1 are threadedly connected to the second coupling 2. The elastic connecting ring 7 is made of highly elastic and high-strength rubber. When the axis is not concentric, the elastic connecting ring 7 will undergo elastic deformation, thereby absorbing and buffering the additional load caused by the non-concentricity. At the same time, the elastic connecting ring 7 is threadedly installed between the first coupling 1 and the second coupling 2 through the second bolt 8.

[0030] like Figure 4 and Figure 5 As shown, an installation groove 11 is provided inside the upper part of the connecting rod 9. A spring 12 is fixedly connected inside the installation groove 11. The lower part of the limiting block 13 is fixedly connected to the spring 12. By pressing the limiting block 13 in the installation groove 11 inside the connecting rod 9, the limiting block 13 squeezes the spring 12. Then, the connecting rod 9 is inserted into the connecting sleeve 10. When it is necessary to adjust to the first limiting groove 14 above the connecting sleeve 10, the limiting block 13 is released and the spring 12 below rebounds, locking the limiting block 13 in the limiting groove 14 to complete the limiting.

[0031] like Figure 4 and Figure 5As shown, the connecting sleeve 10 has two sets of limiting grooves 14 on its outside. The limiting block 13 slides in the limiting groove 14. The two sets of limiting grooves 14 can be adjusted according to the appropriate length between the connecting rod 9 and the connecting sleeve 10. Pressing the limiting block 13 causes the connecting rod 9 to move inside the connecting sleeve 10. After adjusting to the required limiting groove 14, the limiting block 13 is released and springs back into place.

[0032] like Figure 4 and Figure 5 As shown, a damping spring 15 is fixedly connected inside the connecting sleeve 10. The front end of the damping spring 15 abuts against the rear end of the connecting rod 9. There is a relatively long space through the limiting groove 14. The connecting rod 9 can move slightly within the connecting sleeve 10 through the limiting block 13. The damping spring 15 inside the connecting sleeve 10 can abut against the connecting rod 9 to absorb and buffer the impact.

[0033] The working principle of this practical device is as follows: First, the first coupling 1 is fitted onto the outside of the first drive shaft 3, and the first coupling 1 and the first drive shaft 3 are fixed together by the first bolt 6. Then, the elastic connecting ring 7 is inserted into the inside of the first coupling 1 by the second bolt 8. Next, the second coupling 2 is fitted onto the outside of the second drive shaft 4 without fixing it. Then, the limiting block 13 inside the connecting rod 9 is pressed, causing the limiting block 13 to compress the spring 12 inside the mounting groove 11. At this time, the connecting rod 9 is inserted into the connecting sleeve 10. The connecting sleeve 10 has two sets of limiting grooves 14 on its outside. According to the required installation length, the connecting rod 9 and the limiting block 13 are moved below the limiting groove 14. Then, the limiting block 13 is released from compression and rebounds into the limiting groove 14 by the spring 12 below. After adjusting the length, the first bolt 6 is inserted into the second coupling 10. The coupling 2 is threadedly fixed to the second drive shaft 4. Then, the other side of the elastic connecting ring 7 is fixed inside the second coupling 2 by the second bolt 8. After that, the equipment starts to drive the first drive shaft 3 and the second drive shaft 4 and the external first coupling 1 and the second coupling 2 to rotate. The elastic connecting ring 7 between the first coupling 1 and the second coupling 2 is made of highly elastic and high-strength rubber. When the shaft is misaligned, the elastic connecting ring 7 will undergo elastic deformation, thereby absorbing and buffering the additional load caused by misalignment. The limiting groove 14 on the surface of the connecting sleeve 10 has a long space. The limiting block 13 and the connecting rod 9 can move slightly within the connecting sleeve 10. The damping spring 15 inside the connecting sleeve 10 can resist the connecting rod 9 to absorb and buffer the load. In this way, the use of the adjustable coupling is completed.

[0034] 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. An adjustable coupling, characterized in that: Includes the first coupling (1) and the second coupling (2); The first coupling (1) and the second coupling (2) are respectively sleeved on the outside of the first transmission shaft (3) and the second transmission shaft (4). The outer threads of the first coupling (1) and the second coupling (2) pass through the first bolt (6), and the front end of the first bolt (6) passes through the inside of the first transmission shaft (3) and the second transmission shaft (4). An elastic connecting ring (7) is set between the first coupling (1) and the second coupling (2) for automatic adjustment and compensation. A connecting rod (9) is fixedly connected inside the first coupling (1). A connecting sleeve (10) is sleeved on the outside of the connecting rod (9). The rear end of the connecting sleeve (10) is fixedly connected to the inside of the second coupling (2). A limit block (13) is slidably connected inside the connecting rod (9). A limit groove (14) is opened inside the upper part of the connecting sleeve (10).

2. An adjustable coupling according to claim 1, characterized in that: The inner surfaces of the first coupling (1) and the second coupling (2) are provided with grooves (5), and the outer surfaces of the first transmission shaft (3) and the second transmission shaft (4) are provided with protrusions, which are used in conjunction with the grooves (5).

3. An adjustable coupling according to claim 1, characterized in that: The elastic connecting ring (7) has a second bolt (8) through both ends, and the elastic connecting ring (7) and the first coupling (1) are threadedly connected to the second coupling (2).

4. An adjustable coupling according to claim 1, characterized in that: The upper part of the connecting rod (9) is provided with an installation groove (11), and a spring (12) is fixedly connected inside the installation groove (11). The lower part of the limiting block (13) is fixedly connected to the spring (12).

5. An adjustable coupling according to claim 1, characterized in that: The connecting sleeve (10) has two sets of limiting grooves (14) on its outside, and the limiting block (13) slides in the limiting groove (14).

6. An adjustable coupling according to claim 1, characterized in that: A damping spring (15) is fixedly connected inside the connecting sleeve (10), and the front end of the damping spring (15) abuts against the rear end of the connecting rod (9).

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