Shaft breakage prevention coupling

Abstract

The utility model discloses a shaft breakage prevention coupling which comprises two shaft sleeves and flanges, the number of the shaft sleeves and the number of the flanges are both two, the flanges are fixedly connected to the shaft sleeves in a sleeved mode, and a rubber bag is arranged between the two flanges. In the assembling process of the coupler, the gasket is arranged in the rubber bag, the bolt penetrates through the rubber bag and the flange, the nut is connected to the bolt in a screwed mode, whether parts are damaged or loosened or abraded or not is checked regularly, problems are found in time, maintenance is conducted, and the lubricating structure is arranged in the rubber bag through cooperation of the lubricating structure and the reinforcing structure; along with continuous use, lubricating oil in the lubricating structure can lubricate the shaft body, good lubrication is ensured, friction and abrasion are reduced, the purpose of preventing the shaft from being broken is achieved, correct installation procedures and specified torque are followed during installation, firm and stable installation can be ensured under the cooperation of the reinforcing structure, and the service life of the shaft is prolonged. Overload use is not needed in the use process, the phenomenon of shaft breakage is prevented, and safety is improved.

Description

Technical Field

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

[0002] A coupling is a device that connects two shafts or a shaft and a rotating part. They rotate together during the transmission of motion and power and do not disengage under normal circumstances. It is sometimes also used as a safety device to prevent the connected parts from being subjected to excessive loads and play a role in overload protection. A shaft is also called a coupling. It is a mechanical component used to firmly connect the driving shaft and the driven shaft in different mechanisms to rotate together and transmit motion and torque. It is sometimes also used to connect the shaft with other parts, such as gears and pulleys. It is often composed of two halves, which are connected by keys or tight fits, fastened to the two shaft ends, and then connected in some way. The coupling can also compensate for the inaccuracies in manufacturing and installation between the two shafts, and the workmanship. The displacement caused by deformation during operation or thermal expansion, including axial displacement, radial displacement, angular displacement or combined displacement; as well as impact mitigation and vibration absorption, most commonly used couplings have been standardized or normalized. In general, it is only necessary to correctly select the type of coupling, determine the model and size of the coupling, and perform load capacity verification on its vulnerable links when necessary. When the speed is high, it is also necessary to verify the centrifugal force of the outer edge and the deformation of the elastic element, perform balance verification, etc. During use, due to some improper operations, the shaft will break, which will not only damage the connected shaft, but also cause parts to splash, which will seriously threaten the safety of the staff. Utility Model Content

[0003] The purpose of the present utility model is to provide a shaft-breaking prevention coupling to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a shaft-breaking prevention coupling, comprising a shaft sleeve and a flange, wherein the number of the shaft sleeve and the number of the flanges are both two, the flange is fixedly sleeved on the shaft sleeve, a rubber bag is arranged between the two flanges, the inner wall of the rubber bag is plugged with two gaskets, the two flanges are located on the upper and lower sides of the inner wall of the rubber bag, a plurality of bolts are fixedly assembled on the surface of the gasket, the bolts pass through the rubber bag and the flanges, the outer wall of the bolts is screwed with a nut, the nut is tightly fitted with the adjacent flange, a lubrication structure is arranged inside the rubber bag, and the outer wall of the rubber bag is provided with a reinforcement structure for use with the bolts.

[0005] Preferably, the lubrication structure includes an opening, which is opened on the inner side of the rubber bag, the opening is annular, the inner wall of the opening is provided with a cavity, the inner wall of the cavity is plugged with a sponge strip, and the sponge strip is soaked in lubricating oil.

[0006] Preferably, the cavity is annular, and the inner diameter of the cavity becomes smaller as it is closer to the opening.

[0007] Preferably, the reinforcement structure includes a top block and a connecting rod. There are two top blocks, and the two top blocks are fixedly assembled at both ends of the connecting rod. The connecting rod is arc-shaped and fits tightly with the rubber bag. A through hole is opened on the surface of the top block, and the bolt passes through the adjacent through holes.

[0008] Preferably, a groove is formed on a side surface of the flange close to the top block, and the top block is clamped in the adjacent groove.

[0009] Preferably, the inner side surface of the gasket is provided with ridges.

[0010] Compared with the prior art, the beneficial effects of the present invention are: a coupling that prevents broken shafts. During the assembly of the coupling, a gasket is placed inside the rubber bag, a bolt passes through the rubber bag and the flange, and a nut is screwed to the bolt. In order to avoid broken shafts, regular inspections are required. Regularly check whether the parts are damaged, loose or worn, and find problems in time and perform maintenance. Through the cooperation of the lubrication structure and the reinforcement structure, a lubrication structure is set in the rubber bag. With continuous use, the lubricating oil in the lubrication structure can lubricate the shaft and ensure good lubrication to reduce friction and wear, thereby achieving the purpose of preventing broken shafts. During installation, follow the correct installation procedure and specified torque. With the cooperation of the reinforcement structure, it can ensure that the installation is firm and stable. Do not overload during use to prevent broken shafts and improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of the utility model.

[0012] Figure 2 This is a cross-sectional view of the structure of the utility model.

[0013] Figure 3 This is a top view of the rubber bag and top block structure of the utility model.

[0014] In the figure: 1. sleeve; 2. flange; 3. gasket; 4. bolt; 5. nut; 6. top block; 7. connecting rod; 8. rubber bag; 9. opening; 10. cavity; 11. sponge strip; 12. groove. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] See also Figure 1-3 The utility model provides a technical solution: an anti-shaft-breaking coupling, including a sleeve 1 and a flange 2. The number of the sleeve 1 and the number of the flange 2 are both two. The flange 2 is fixedly sleeved on the sleeve 1. A rubber bag 8 is provided between the two flanges 2. Two gaskets 3 are inserted into the inner wall of the rubber bag 8. The two flanges are located on the upper and lower sides of the inner wall of the rubber bag 8. A plurality of bolts 4 are fixedly assembled on the surface of the gasket 3. The bolts 4 pass through the rubber bag 8 and the flange 2. The outer wall of the bolt 4 is screwed with a nut 5. The nut 5 fits tightly with the adjacent flange 2. A lubrication structure is provided in the rubber bag 8, and the outer wall of the rubber bag 8 is provided with a reinforcement structure used in conjunction with the bolt 4.

[0017] During the assembly of the coupling, place the gasket 3 inside the rubber bag 8, the bolt 4 passes through the rubber bag 8 and the flange 2, and the nut 5 is screwed onto the bolt 4. In order to avoid the phenomenon of broken shafts, regular inspections are required. Regularly check whether the parts are damaged, loose or worn, and find problems in time and perform maintenance. A lubrication structure is set in the rubber bag 8. With continuous use, the lubricating oil in the lubrication structure can lubricate the shaft body and ensure good lubrication to reduce friction and wear, thereby achieving the purpose of preventing broken shafts. Follow the correct installation procedure and specified torque during installation. With the cooperation of the reinforcement structure, it can ensure that the installation is firm and stable. Do not overload during use to prevent broken shafts.

[0018] Specifically, the lubrication structure includes an opening 9 , which is provided on the inner side of the rubber bag 8 and is annular. A cavity 10 is provided on the inner wall of the opening 9 , and a sponge strip 11 is inserted into the inner wall of the cavity 10 , and the sponge strip 11 is soaked in lubricating oil.

[0019] The lubrication structure can lubricate the rotating shaft. The sponge strip 11 is inserted into the interior of the cavity 10 from the position of the opening 9. The sponge strip 11 has a certain deformation ability and can pass through the narrow opening 9. After the sponge strip 11 is placed, use a dropper to drip lubricating oil into the cavity 10 and soak the sponge strip 11 with lubricating oil. During use, the rubber bag 8 undergoes elastic deformation. As the rubber bag 8 deforms, the lubricating oil in the sponge strip 11 seeps out from the position of the opening 9 and acts on the shaft to achieve the lubrication effect.

[0020] Specifically, the cavity 10 is annular, and the inner diameter of the cavity 10 becomes smaller as it is closer to the opening 9 .

[0021] The cross section of the cavity 10 is as follows: Figure 2 As shown in FIG, the cavity 10 is in the shape of a horizontal water drop, which can achieve the purpose of storing lubricating oil.

[0022] Specifically, the reinforcement structure includes a top block 6 and a connecting rod 7. There are two top blocks 6. The two top blocks 6 are fixedly assembled at both ends of the connecting rod 7. The connecting rod 7 is arc-shaped and fits tightly with the rubber bag 8. A through hole is opened on the surface of the top block 6, and the bolt 4 passes through the adjacent through hole.

[0023] The reinforcement structure is mainly used to improve the stability of the rubber bag 8. The top block 6 is sleeved on the bolts 4 at the corresponding upper and lower positions, and the connecting rod 7 is fitted into the side of the rubber bag 8 in an arc shape to reinforce the position where the bolt 4 passes through the rubber bag 8 to improve the stability of the rubber bag 8.

[0024] Specifically, a groove 12 is formed on a side surface of the flange 2 close to the top block 6 , and the top block 6 is snapped into the adjacent groove 12 .

[0025] A circular groove 12 is formed on the flange 2, and the top block 6 is clamped to the inner wall of the groove 12, which can increase the contact area between the top block 6 and the flange 2 and make it more stable during use.

[0026] Specifically, the inner side surface of the gasket 3 is provided with ridges.

[0027] A ridge is provided on the inner side of the gasket 3 , and the ridge can shield the edge of the rubber bag 8 , thereby increasing the contact area between the gasket 3 and the rubber bag 8 and improving the integrity.

[0028] Working principle: During the assembly of the coupling, place the gasket 3 inside the rubber bag 8, the bolt 4 passes through the rubber bag 8 and the flange 2, and the nut 5 is screwed onto the bolt 4. In order to avoid the phenomenon of broken shaft, a lubrication structure is set in the rubber bag 8. With continuous use, the lubricating oil in the lubrication structure can lubricate the shaft body and ensure good lubrication to reduce friction and wear, so as to achieve the purpose of preventing broken shaft. During installation, follow the correct installation procedure and specified torque. With the cooperation of the reinforcement structure, it can ensure that the installation is firm and stable. Do not overload during use to prevent the phenomenon of broken shaft.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shaft-breaking prevention coupling, comprising a shaft sleeve (1) and a flange (2), wherein the number of the shaft sleeve (1) and the number of the flange (2) are both two, and the flange (2) is fixedly sleeved on the shaft sleeve (1), characterized in that: A rubber bag (8) is provided between the two flanges (2), and two gaskets (3) are inserted into the inner wall of the rubber bag (8). The two flanges are located on the upper and lower sides of the inner wall of the rubber bag (8). A plurality of bolts (4) are fixedly assembled on the surface of the gasket (3). The bolts (4) pass through the rubber bag (8) and the flange (2). The outer wall of the bolt (4) is screwed with a nut (5), and the nut (5) is tightly fitted with the adjacent flange (2). A lubrication structure is provided in the rubber bag (8), and a reinforcement structure used in conjunction with the bolts (4) is provided on the outer wall of the rubber bag (8).

2. The anti-shaft-breakage coupling according to claim 1, characterized in that: The lubricating structure comprises an opening (9), the opening (9) is opened on the inner side of the rubber bag (8), the opening (9) is annular, the inner wall of the opening (9) is provided with a cavity (10), the inner wall of the cavity (10) is plugged with a sponge strip (11), and the sponge strip (11) is soaked with lubricating oil.

3. The anti-shaft-breakage coupling according to claim 2, characterized in that: The cavity (10) is annular, and the inner diameter of the cavity (10) decreases as it is closer to the opening (9).

4. The anti-shaft-breakage coupling according to claim 1, characterized in that: The reinforcement structure comprises a top block (6) and a connecting rod (7). There are two top blocks (6). The two top blocks (6) are fixedly assembled at both ends of the connecting rod (7). The connecting rod (7) is arc-shaped and fits tightly with the rubber bag (8). Through holes are opened on the surface of the top block (6), and the bolts (4) pass through adjacent through holes.

5. The anti-shaft-breakage coupling according to claim 4, characterized in that: A groove (12) is provided on a side of the flange (2) close to the top block (6), and the top block (6) is clamped in the adjacent groove (12).

6. The anti-shaft-breakage coupling according to claim 1, characterized in that: The inner side surface of the gasket (3) is provided with ridges.

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