Wear-resistant rubber sleeve for coupler

Abstract

The utility model relates to the related technical field of couplings, in particular to a coupling wear-resisting rubber sleeve which comprises a coupling body, a wear-resisting assembly and a shaft body, four limiting grooves are formed in the surface of the shaft body, a plurality of mounting screw holes are formed in the left side and the right side of the coupling body, and the wear-resisting assembly comprises a wear-resisting structure, a connecting structure and a limiting structure. According to the coupling wear-resistant rubber sleeve, through the arrangement of the wear-resistant assembly, when the coupling wear-resistant rubber sleeve is used, a rubber ring can be used as a protection structure for inserting a shaft body into a shaft hole in the wear-resistant sleeve, friction between the shaft body and the inner wall of the wear-resistant sleeve is reduced, and after a rubber clamping sleeve is inserted into a limiting groove, the position of the shaft body in the wear-resistant sleeve can be locked; even if the shaft body rotates, the shaft body and the limiting rod are flexibly connected through the rubber clamping sleeve without friction, and the friction between the shaft body and the rubber ring is reduced when the shaft body rotates, so that the protection effect on the shaft body is obvious, the wear-resistant effect of the shaft body is improved, and the service life of the shaft body is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of couplings, and in particular to a wear-resistant rubber sleeve for couplings. 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 the transmission of motion and power, and not to disengage under normal circumstances. Sometimes it is also used as a safety device to prevent the connected components from bearing excessive loads, thus providing overload protection. It is usually composed of two halves, which are connected by keys or tight fits and fastened to the ends of the two shafts, and then the two halves are connected together in some way. Couplings can compensate for misalignment between two shafts caused by manufacturing and installation inaccuracies, deformation during operation, or thermal expansion, as well as mitigate impacts and absorb vibrations. Couplings can be divided into two main categories: rigid couplings and flexible couplings. Rigid couplings do not have the ability to buffer or compensate for relative displacement between two shafts and require strict alignment of the two shafts. However, this type of coupling has a simple structure, low manufacturing cost, and is easy to install, disassemble, and maintain. It can ensure a high degree of alignment between the two shafts, transmit a large torque, and is widely used. Flexible couplings can be further divided into flexible couplings without elastic elements and flexible couplings with elastic elements. The former only has the ability to compensate for relative displacement between two shafts but cannot buffer or reduce vibrations. In the use of rigid couplings, in order to reduce friction between the shaft and the coupling, some wear-resistant structures are added to the coupling to protect the shaft.

[0003] Most existing wear-resistant structures in rigid couplings involve adding a rubber ring at the rotational connection between the coupling and the shaft. The deformability and elasticity of the rubber provide some protection for the shaft. However, during shaft rotation, the connection between the shaft and the coupling remains rigid, leading to severe friction between the shaft and the coupling in the transmission structure. Therefore, the protection effect on the shaft is poor, and there is room for improvement. Utility Model Content

[0004] The purpose of this utility model is to provide a wear-resistant rubber sleeve for couplings, so as to solve the problem mentioned in the background art that the wear-resistant structure in the existing couplings is only set at the rotational connection between the shaft and the coupling, which is difficult to protect the transmission structure between the shaft and the coupling from wear, and the shaft is easily damaged due to severe friction.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant rubber sleeve for a coupling, comprising a coupling body, a wear-resistant component, and a shaft. The surface of the shaft is provided with four limiting grooves, and the left and right sides of the coupling body are provided with several mounting screw holes. The wear-resistant component includes a wear-resistant structure, a connecting structure, and a limiting structure.

[0006] The connection structure is used to fix the wear-resistant component to the coupling body, and the limiting structure is used to fix the shaft and the wear-resistant component.

[0007] Preferably, the wear-resistant structure includes a wear-resistant sleeve, with a shaft hole at the left end and a wear-resistant hole at the right end. A circular collar is inserted into the inner wall of the wear-resistant hole, and a rubber ring is fixedly connected to the inner wall of the circular collar.

[0008] Preferably, the wear-resistant sleeve has a plurality of locking bolts threaded on its surface, and the ends of the locking bolts away from the wear-resistant sleeve surface extend into the interior of the wear-resistant hole. The surface of the circular collar has a plurality of threaded grooves that are adapted to the locking bolts, and the inner diameter of the rubber ring is adapted to the inner diameter of the shaft hole.

[0009] Preferably, the connection structure includes a connecting flange, and a plurality of connecting bolts are threadedly connected to the side of the connecting flange, and the positions of the connecting bolts correspond to the positions of the mounting bolt holes, and the connecting bolts are adapted to the mounting bolt holes.

[0010] Preferably, the limiting structure includes two positioning frames, which are symmetrically installed on the surface of the wear-resistant sleeve. Two circular through holes are opened on the opposite side of the two positioning frames, and circular grooves are opened on the opposite back side of the two positioning frames. Hexagonal nuts are rotatably connected to the inner wall of the circular grooves, and positioning screws are fixedly connected to the opposite side of the two hexagonal nuts.

[0011] Preferably, the opposite ends of the two positioning screws extend into the interior of the two positioning frames and are rotatably connected to the inner walls of the two positioning frames. The inner walls of the two positioning frames are slidably connected with movable plates, and the two movable plates are threadedly connected to the surfaces of the two positioning screws.

[0012] Preferably, two limiting rods are fixedly connected to the opposite surfaces of the two movable plates. A rubber sleeve is fitted on the end of the limiting rod away from the movable plate, and the rubber sleeve is adapted to the circular through hole and the limiting groove respectively.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This wear-resistant rubber sleeve for couplings, through the setting of wear-resistant components, can use the rubber ring as a protective structure for the shaft to be inserted into the inner hole of the wear-resistant sleeve during use, reducing the friction between the shaft and the inner wall of the wear-resistant sleeve. Furthermore, after the rubber sleeve is inserted into the limiting groove, the position of the shaft in the wear-resistant sleeve can be locked. Even if the shaft rotates, the shaft and the limiting rod are flexibly connected by the rubber sleeve, and no friction will occur. Moreover, the friction between the shaft and the rubber ring when the shaft rotates will also be reduced, thus significantly protecting the shaft, improving the wear resistance of the shaft, and extending the service life of the shaft. Attached Figure Description

[0014] Figure 1This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the wear-resistant component and coupling body after assembly of this utility model;

[0016] Figure 3 This is a schematic diagram of the orthographic structure of the shaft after insertion.

[0017] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Coupling body; 2. Wear-resistant component; 3. Shaft; 4. Limiting groove; 5. Mounting screw hole;

[0019] 21. Wear-resistant structure; 22. Connecting structure; 23. Limiting structure;

[0020] 2101, Wear-resistant sleeve; 2102, Shaft hole; 2103, Wear-resistant hole; 2104, Circular collar; 2105, Rubber ring; 2106, Locking bolt;

[0021] 2201. Connecting flange; 2202. Connecting bolts;

[0022] 2301, Positioning frame; 2302, Hexagonal nut; 2303, Positioning screw; 2304, Movable plate; 2305, Limiting rod; 2306, Rubber sleeve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 This utility model provides a technical solution: a wear-resistant rubber sleeve for a coupling, including a coupling body 1, a wear-resistant component 2 and a shaft 3. The surface of the shaft 3 is provided with four limiting grooves 4. The left and right sides of the coupling body 1 are provided with a number of mounting screw holes 5. The wear-resistant component 2 includes a wear-resistant structure 21, a connecting structure 22 and a limiting structure 23.

[0025] The connecting structure 22 is used to fix the wear-resistant component 2 to the coupling body 1, and the limiting structure 23 is used to fix the shaft 3 and the wear-resistant component 2.

[0026] Furthermore, the wear-resistant structure 21 includes a wear-resistant sleeve 2101. The left end of the wear-resistant sleeve 2101 has a shaft hole 2102, and the right end of the wear-resistant sleeve 2101 has a wear-resistant hole 2103. A circular collar 2104 is inserted into the inner wall of the wear-resistant hole 2103. A rubber ring 2105 is fixedly connected to the inner wall of the circular collar 2104. The circular collar 2104 allows for the disassembly and assembly of the rubber ring 2105, thus facilitating the replacement of the rubber ring 2105 when it is severely worn.

[0027] Furthermore, the wear-resistant sleeve 2101 has several locking bolts 2106 threadedly connected to its surface, and the ends of the locking bolts 2106 away from the surface of the wear-resistant sleeve 2101 extend into the interior of the wear-resistant hole 2103. The surface of the circular collar 2104 has several threaded grooves that are adapted to the locking bolts 2106, and the inner diameter of the rubber ring 2105 is adapted to the inner diameter of the shaft hole 2102. Since the inner diameter of the rubber ring 2105 is the same as the inner diameter of the shaft hole 2102, the shaft 3 can be inserted into the inner wall of the rubber ring 2105. Therefore, the shaft 3 can be protected by the rubber ring 2105 during rotation, reducing the friction between the shaft 3 and the inner wall of the wear-resistant sleeve 2101 and improving the protection effect on the shaft 3.

[0028] Furthermore, the connection structure 22 includes a connection flange 2201, and a number of connection bolts 2202 are threadedly connected to the side of the connection flange 2201. The positions of the connection bolts 2202 correspond to the positions of the mounting screw holes 5. The connection bolts 2202 are adapted to the mounting screw holes 5. After aligning the connection flange 2201 with both sides of the coupling body 1, the connection bolts 2202 can be inserted into the mounting screw holes 5 to lock and assemble the wear-resistant sleeve 2101 and the coupling body 1.

[0029] Furthermore, the limiting structure 23 includes two positioning frames 2301, which are symmetrically installed on the surface of the wear-resistant sleeve 2101. Two circular through holes are opened on the opposite sides of the two positioning frames 2301, and circular grooves are opened on the opposite sides of the two positioning frames 2301. Hexagonal nuts 2302 are rotatably connected to the inner wall of the circular grooves. Positioning screws 2303 are fixedly connected to the opposite sides of the two hexagonal nuts 2302. After inserting a hexagonal screwdriver into the hexagonal nut 2302, the hexagonal nut 2302 can be rotated, thereby driving the two positioning screws 2303 to rotate. During normal use, the two hexagonal nuts 2302 are embedded in the circular grooves, and there is no force-bearing structure to make them rotate, so the stability is higher.

[0030] Furthermore, the opposite ends of the two positioning screws 2303 extend into the interior of the two positioning frames 2301 and are rotatably connected to the inner walls of the two positioning frames 2301. The inner walls of the two positioning frames 2301 are slidably connected to movable plates 2304. The two movable plates 2304 are threadedly connected to the surfaces of the two positioning screws 2303. After the two positioning screws 2303 are rotated, they can drive the two movable plates 2304 to move up and down within the positioning frames 2301.

[0031] Furthermore, two limiting rods 2305 are fixedly connected to the opposite surfaces of the two movable plates 2304. A rubber sleeve 2306 is fitted onto the end of each limiting rod 2305 away from the movable plate 2304. The rubber sleeve 2306 is adapted to both the circular through hole and the limiting groove 4. After being driven by the positioning screw 2303, the two movable plates 2304 can move towards their opposite surfaces, allowing the two limiting rods 2305 to drive the rubber sleeve 2306 through the circular through hole and extend into the shaft hole 2102 until the rubber sleeve... When sleeve 2306 is inserted into the limiting groove 4, the limiting rod 2305 can achieve the positioning effect of shaft 3 through the limiting groove 4, ensuring the connection strength between shaft 3, wear-resistant sleeve 2101 and coupling body 1. After locking shaft 3, even if shaft 3 rotates, the inner wall of its limiting groove 4 and the limiting rod 2305 are flexibly connected through rubber sleeve 2306, and the friction between shaft 3 and rubber ring 2105 is reduced, thereby improving the protection effect of shaft 3 and increasing the wear resistance of shaft 3.

[0032] Working principle: First, the wear-resistant component 2 is locked to the coupling body 1 via the connecting flange 2201 and connecting bolts 2202. Then, the shaft 3 is inserted into the shaft hole 2102 on the side of the wear-resistant sleeve 2101. The shaft 3 can extend to the position of the rubber ring 2105, ensuring that the shaft 3 will not experience severe wear on the inner wall of the wear-resistant sleeve 2101. Furthermore, the circular collar 2104 can be pulled out from the wear-resistant hole 2103 on the right side of the wear-resistant sleeve 2101 using the locking bolt 2106, facilitating the replacement of the rubber ring 2105. After the shaft 3 is inserted, a hex screwdriver is used to rotate the two hex nuts 2302. The two hex nuts 2302 rotate the two positioning screws 2303, thereby causing the two movable plates 2304 to move within the positioning frame 2301 towards the wear-resistant sleeve 2105. As the grinding sleeve 2101 moves, the two movable plates 2304 can drive the two rubber sleeves 2306 through the circular through hole and into the shaft hole 2102 via the two limiting rods 2305, inserting them into the limiting groove 4. After the two rubber sleeves 2306 are inserted into the limiting groove 4, the limiting rods 2305 can limit the shaft 3, thereby improving the connection strength between the shaft 3 and the wear-resistant sleeve 2101 and the coupling body 1. Furthermore, the limiting rods 2305 and the shaft 3 are flexibly connected through the rubber sleeves 2306, which can minimize the friction between the shaft 3 and the limiting rods 2305 during rotation. After limiting the shaft 3, the friction between the shaft 3 and the rubber ring 2105 will also be reduced, thereby improving the protection effect of the shaft 3 and extending the service life of the shaft 3.

[0033] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant rubber sleeve for a coupling, comprising a coupling body (1), a wear-resistant component (2), and a shaft (3), characterized in that: The shaft (3) has four limiting grooves (4) on its surface, and the coupling body (1) has several mounting screw holes (5) on both the left and right sides. The wear-resistant component (2) includes a wear-resistant structure (21), a connecting structure (22) and a limiting structure (23). The connection structure (22) is used to fix the wear-resistant component (2) to the coupling body (1), and the limiting structure (23) is used to fix the shaft (3) and the wear-resistant component (2).

2. The wear-resistant rubber sleeve for a coupling according to claim 1, characterized in that: The wear-resistant structure (21) includes a wear-resistant sleeve (2101), with a shaft hole (2102) at the left end of the wear-resistant sleeve (2101) and a wear-resistant hole (2103) at the right end of the wear-resistant sleeve (2101). A circular collar (2104) is inserted into the inner wall of the wear-resistant hole (2103), and a rubber ring (2105) is fixedly connected to the inner wall of the circular collar (2104).

3. The wear-resistant rubber sleeve for a coupling according to claim 2, characterized in that: The wear-resistant sleeve (2101) has several locking bolts (2106) threadedly connected to its surface, and the ends of the locking bolts (2106) away from the surface of the wear-resistant sleeve (2101) extend into the interior of the wear-resistant hole (2103). The surface of the circular collar (2104) has several threaded grooves that are compatible with the locking bolts (2106), and the inner diameter of the rubber ring (2105) is compatible with the inner diameter of the shaft hole (2102).

4. The wear-resistant rubber sleeve for a coupling according to claim 1, characterized in that: The connection structure (22) includes a connecting flange (2201), and a number of connecting bolts (2202) are threaded on the side of the connecting flange (2201). The positions of the connecting bolts (2202) correspond to the positions of the mounting screw holes (5), and the connecting bolts (2202) are adapted to the mounting screw holes (5).

5. The wear-resistant rubber sleeve for a coupling according to claim 1, characterized in that: The limiting structure (23) includes two positioning frames (2301), which are symmetrically installed on the surface of the wear-resistant sleeve (2101). Two circular through holes are opened on the opposite sides of the two positioning frames (2301), and circular grooves are opened on the opposite sides of the two positioning frames (2301). Hexagonal nuts (2302) are rotatably connected to the inner wall of the circular grooves, and positioning screws (2303) are fixedly connected to the opposite sides of the two hexagonal nuts (2302).

6. The wear-resistant rubber sleeve for a coupling according to claim 5, characterized in that: The opposite ends of the two positioning screws (2303) extend into the interior of the two positioning frames (2301) and are rotatably connected to the inner walls of the two positioning frames (2301). The inner walls of the two positioning frames (2301) are slidably connected with movable plates (2304), and the two movable plates (2304) are threadedly connected to the surfaces of the two positioning screws (2303).

7. The wear-resistant rubber sleeve for a coupling according to claim 6, characterized in that: Two limiting rods (2305) are fixedly connected to the opposite surfaces of the two movable plates (2304). A rubber sleeve (2306) is fitted on the end of the limiting rod (2305) away from the movable plate (2304), and the rubber sleeve (2306) is adapted to the circular through hole and the limiting groove (4) respectively.

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