Anti-falling coupler

Abstract

The utility model discloses an anti-falling coupler, and belongs to the technical field of couplings. The anti-disengaging coupler comprises a first shaft sleeve and a second shaft sleeve, the connecting ends of the first shaft sleeve and the second shaft sleeve are provided with a first borrowed sleeve tooth and a second borrowed sleeve tooth respectively, and the anti-disengaging coupler further comprises a locking mechanism which enables the first shaft sleeve and the second shaft sleeve to be connected in a meshed mode through the first sleeve tooth and the second sleeve tooth, and then the first shaft sleeve and the second shaft sleeve are connected in a meshed mode and locked in the first shaft sleeve and the second shaft sleeve in a meshed mode. The anti-torsion degree of transmission of the two shaft sleeves is improved through meshing connection, then the meshing connection is locked and prevented from falling off in the two shaft sleeves, locking is detachable, and the shaft sleeve disassembling and assembling difficulty is low. The technical problem that the service life of an existing coupler is short due to the fact that the existing coupler is often loosened after being used for a long time is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, and more specifically to an anti-slip coupling. Background Art

[0002] A coupling is a device that connects two shafts, or a shaft and a rotating part, rotating together to transmit motion and power, and cannot be disengaged under normal circumstances. It is also sometimes used as a safety device to prevent excessive loads on the connected parts, providing overload protection. Existing couplings use a single-screw clamping method, which can loosen over time, shortening the product's overall lifespan.

[0003] After searching, the patent number is 202021361780.X, which discloses an anti-slip coupling diaphragm sleeve, including a sleeve body, an axial hole extending to both ends is opened at the center of the sleeve body, and protruding claws are fixed around the lower end of the sleeve body. A first slit and an extension groove extending outward are opened at the side end of the axial hole. The first slit and the extension groove are in the same straight line. The first slit extends to the outer end of the sleeve body, and the extension groove does not exceed one-quarter of the radius of the sleeve body. A second slit perpendicular to the first slit is opened at the side end of the sleeve body, and the lower end of the first slit extends to the second slit and is connected to it. A first bolt hole and a second bolt hole are opened at the side end of the sleeve body, and the first bolt hole and the second bolt hole are arranged in parallel and pass through the first slit. Bolts are fixedly installed in the first bolt hole and the second bolt hole. Bolt head mounting grooves are opened at one end of the first bolt hole and the second bolt hole, and a mounting platform is opened at the bottom end of the bolt head mounting groove. In this solution, two holes need to be opened on the sleeve so that two bolts can be installed in reverse to achieve the anti-slip effect. This design not only greatly reduces the torsion resistance of the sleeve, but also greatly increases the difficulty of disassembling and assembling the sleeve. Utility Model Content

[0004] 1. Technical problems to be solved by the utility model:

[0005] In order to solve the problem that existing couplings often become loose after long-term use, resulting in a short service life, the utility model provides an anti-slip coupling, which locks the two engaged shaft sleeves with a locking mechanism to achieve the purpose of anti-slipping. Moreover, the locking is detachable, which reduces the difficulty of disassembling and assembling the shaft sleeves.

[0006] 2. Technical solution:

[0007] In order to achieve the above-mentioned purpose, the technical solution provided by the present utility model is:

[0008] An anti-slip coupling includes a first sleeve and a second sleeve, with first and second sleeve teeth provided at the connecting ends of the first and second sleeves, respectively, for positioning. The coupling also includes a locking mechanism for locking the meshed connection within the first and second sleeves after meshing the first and second sleeves through the first and second sleeve teeth. The meshed connection improves the torsional resistance of the transmission, and the meshed connection is locked within the two sleeves to prevent slippage. Furthermore, the locking mechanism is removable, making assembly and disassembly of the sleeves simple.

[0009] A further technical solution is that the locking mechanism includes a locking sleeve, a locking washer and a locking bolt; locking platform one and locking platform two that match the diameter and thickness of the locking sleeve and the locking washer are respectively provided on the inner wall near the connecting end of the sleeve one and the sleeve two; the locking bolt screws the locking sleeve onto the locking washer to lock the sleeve one and the sleeve two, and the locking is achieved through the cooperation of the locking sleeve, locking washer and locking bolt, while making disassembly more convenient.

[0010] A further technical solution is that the inner walls of locking platform one and locking platform two are respectively provided with retaining spring groove one and retaining spring groove two, and retaining spring groove one and retaining spring groove two are respectively pressed into the retaining spring groove one and retaining spring groove two to limit the lateral displacement of the locking sleeve and the locking pad, thereby improving the locking effect and facilitating disassembly and assembly.

[0011] A further technical solution also includes an elastic pad, which is annular in shape and has pad teeth arranged on the circumference. The pad teeth are connected to the gap reserved when the sleeve teeth 1 and 2 are misaligned and engaged, thereby improving the torsion resistance of the transmission and avoiding excessive hard contact between the sleeve teeth 1 and 2 during the torsion resistance process, thereby further improving the service life.

[0012] A further technical solution is to set a positioning cone on the side of the pad tooth, and set a positioning blind hole adapted to the positioning cone on the end face of the shaft sleeve between two adjacent sleeve teeth, which facilitates disassembly and assembly while further improving the torsion resistance of the transmission.

[0013] 3. Beneficial effects:

[0014] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0015] The anti-slip coupling of the utility model realizes locking and is convenient for disassembly through the cooperation of the locking sleeve, the locking washer, the locking bolt and the retaining ring groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of an explosion of an anti-slip coupling according to a specific embodiment;

[0017] Figure 2 Schematic cross-sectional view of an anti-slip coupling according to a specific embodiment;

[0018] Figure 3 This is a cross-sectional diagram of the internal structure of the two sleeves before locking.

[0019] In the figure: 1. Shaft sleeve 1; 2. Shaft sleeve 2; 3. Locking sleeve; 4. Locking bolt; 5. Elastic washer; 6. Circlip 1; 7. Circlip 2; 8. Locking washer; 9. Ring cavity; 11. Sleeve tooth 1; 21. Sleeve tooth 2; 51. Gasket tooth; 52. Positioning round table; 100. Locking table 1; 101. Circlip groove 1; 200. Locking table 2; 201. Circlip groove 2. DETAILED DESCRIPTION

[0020] In order to further understand the content of the utility model, the utility model is described in detail with reference to the accompanying drawings.

[0021] Example 1

[0022] The anti-drop coupling of this embodiment is as follows Figure 1 、 2 As shown, the assembly comprises a first sleeve 1 and a second sleeve 2, with the connecting ends of the first and second sleeves respectively provided with a first sleeve tooth 11 and a second sleeve tooth 21 for positioning. Furthermore, the assembly comprises a locking mechanism for locking the meshed connection within the first and second sleeves after the first and second sleeves 1 and 2 are meshed and connected via the first and second sleeve teeth 11 and 21. The meshed connection improves the torsional resistance of the transmission, and the meshed connection is locked within the two sleeves to prevent disengagement. Furthermore, the locking mechanism is removable, making assembly and disassembly of the sleeves simple.

[0023] The locking mechanism used in this embodiment includes a locking sleeve 3, a locking washer 8 and a locking bolt 4; Figure 3 As shown, the inner walls near the connecting ends of the shaft sleeve 1 and the shaft sleeve 2 are respectively provided with a locking platform 100 and a locking platform 200 that match the diameter and thickness of the locking sleeve 3 and the locking washer 8, both of which are annular steps; the locking bolt 4 screws the locking sleeve 3 onto the locking washer 8 to lock the shaft sleeve 1 and the shaft sleeve 2. While locking is achieved through the cooperation of the locking sleeve 3, the locking washer 8 and the locking bolt 4, disassembly is more convenient.

[0024] To further improve the locking effect, Figure 3 As shown, a retaining spring groove 101 and a retaining spring groove 201 are respectively provided on the inner walls of the locking platform 100 and the locking platform 2 200. Both grooves are annular grooves. The retaining spring 1 6 and the retaining spring 2 7 for limiting the lateral displacement of the locking sleeve 3 and the locking pad 8 are respectively pressed into the retaining spring groove 101 and the retaining spring groove 201, thereby improving the locking effect and saving effort and making disassembly and assembly convenient.

[0025] To prevent excessive contact between sleeve teeth 11 and 21 during torsion resistance and further improve service life, an elastic pad 5 is installed between sleeve 1 and sleeve 2. This pad 5 is annular and features spacers 51 on its circumference. These spacers 51 fill the gap left when sleeve teeth 11 and 21 engage in misaligned engagement, further enhancing the transmission's torsion resistance. Positioning bosses 52 are located on the sides of spacers 51, and blind holes are located on the end faces of sleeve 1 between two adjacent sleeve teeth 11, accommodating these bosses 52. This facilitates assembly and disassembly while further enhancing the transmission's torsion resistance.

[0026] Example 2

[0027] The anti-drop coupling of this embodiment is as follows Figure 2 As shown, the basic structure is the same as that of Example 1, except that the elastic pad 5 is a GR elastic pad with a total of 10 pad teeth 51 symmetrically distributed in a plum blossom shape, and the corresponding sleeve teeth 1 11 and sleeve teeth 2 21 are evenly distributed with 5 each. The cross-section of the locking sleeve 3 is T-shaped, and the diameter of the sleeve body is smaller than the inner hole diameter of the GR elastic pad. A closed annular cavity 9 is formed between the sleeve body and the inner hole, and lubricating oil can be filled in the annular cavity 9. The lubricating oil is close to the retaining spring groove 101 and the retaining spring groove 201, which can effectively prevent the retaining spring 1 6 and the retaining spring 2 7 from rusting and becoming difficult to disassemble after long-term use.

[0028] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure and manufacturing steps are not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the inventive purpose of the present invention, designs a structure and embodiment similar to the technical solution without creatively designing, they shall fall within the scope of protection of the present invention.

Claims

1. An anti-slip coupling, comprising a shaft sleeve 1 (1) and a shaft sleeve 2 (2), wherein the connecting ends of the shaft sleeve 1 (1) and the shaft sleeve 2 (2) are respectively provided with a sleeve tooth 1 (11) and a sleeve tooth 2 (21) for borrowing, and characterized in that: The invention also includes a locking mechanism for locking the meshing connection between the first sleeve (1) and the second sleeve (2) after the first sleeve (1) and the second sleeve (2) are meshed and connected through the first sleeve tooth (11) and the second sleeve tooth (21).

2. The anti-slip coupling according to claim 1, characterized in that: The locking mechanism comprises a locking sleeve (3), a locking washer (8) and a locking bolt (4); a locking platform (100) and a locking platform (200) are respectively provided on the inner wall near the connecting end of the shaft sleeve (1) and the shaft sleeve (2), and the locking platform matches the diameter and thickness of the locking sleeve (3) and the locking washer (8); the locking bolt (4) screws the locking sleeve (3) onto the locking washer (8) to lock the shaft sleeve (1) and the shaft sleeve (2).

3. The anti-slip coupling according to claim 2, characterized in that: The inner walls of the locking platform 1 (100) and the locking platform 2 (200) are respectively provided with a retaining spring groove 1 (101) and a retaining spring groove 2 (201), and the retaining spring groove 1 (101) and the retaining spring groove 2 (201) are respectively pressed into the retaining spring groove 1 (6) and the retaining spring groove 2 (7) for limiting the lateral displacement of the locking sleeve (3) and the locking pad (8).

4. The anti-slip coupling according to claim 2, characterized in that: The elastic pad (5) is also included. The elastic pad (5) is annular and has pad teeth (51) arranged on the circumference. The pad teeth (51) are padded in the gap reserved when the first sleeve tooth (11) and the second sleeve tooth (21) are misaligned and engaged.

5. The anti-slip coupling according to claim 4, characterized in that: A positioning cone (52) is provided on the side of the pad tooth (51), and a positioning blind hole adapted to the positioning cone (52) is provided on the end surface of the shaft sleeve (1) between two adjacent sleeve teeth (11).

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