Wear-resistant plum coupling

Abstract

The wear-resisting plum coupling comprises a first metal claw disc, a second metal claw disc and an elastic gasket, the first metal claw disc, the second metal claw disc and the elastic gasket can be sequentially connected in an inserted mode, and a plurality of clamping grooves are formed in the outer walls of the opposite sides of the first metal claw disc and the second metal claw disc in the circumferential direction at equal intervals respectively. The clamping grooves are matched with the outer walls of the elastic gaskets, a plurality of blind grooves are formed in the inner walls of the clamping grooves, balls are embedded in inner cavities of the blind grooves in a rolling mode, the outer walls of the balls extend out of the inner cavities of the blind grooves, and the elastic gaskets make contact with the outer walls of the balls. According to the wear-resistant plum coupling, in actual use, static friction among the first metal claw disc, the second metal claw disc and the elastic gasket can be reduced, meanwhile, the basic area can be reduced, aging and wear can be slowed down, meanwhile, the wear-resistant plum coupling can confront force causing deformation, the force of each time of deformation is reduced, the aging speed of the elastic gasket is slowed down, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, in particular to a wear-resistant plum blossom coupling. Background Art

[0002] A coupling is a device that connects two shafts or a shaft and a rotating part. The shafts 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, thus playing a role in overload protection. A common plum blossom coupling has an elastic gasket installed between its two metal claw disks. The elasticity of the gasket is used to counteract and compensate for slight deviations when power is transmitted between the two mechanisms, and to provide a certain buffering capacity. At present, when using a plum blossom coupling, due to the large contact area between the gasket and the outer wall of the metal claw disk, when the elasticity of the gasket is used to counteract and compensate, the gasket is prone to slight displacement with the outer wall of the metal claw disk. The friction caused by repeated displacement and resetting is likely to accelerate the wear and aging of the gasket, shorten its service life, and cause a waste of equipment costs. Based on the above problems, a wear-resistant plum blossom coupling is proposed. Utility Model Content

[0003] The utility model aims to provide a wear-resistant plum blossom coupling to solve the problem in the above background technology that the contact area between the gasket and the metal claw plate is large and the wear caused by friction will shorten the service life.

[0004] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a wear-resistant plum blossom coupling, comprising: a first metal claw plate, a second metal claw plate and an elastic gasket, the first metal claw plate, the second metal claw plate and the elastic gasket can be plugged into each other in sequence, the outer walls of the opposite sides of the first metal claw plate and the second metal claw plate are respectively provided with a plurality of slots equidistantly arranged along the circumferential direction, and the slots are adapted to the outer walls of the elastic gasket, the inner walls of the slots are provided with a plurality of blind grooves, the inner cavity of the blind groove is rolled with a ball embedded therein, and the outer wall of the ball extends out of the inner cavity of the blind groove, and the elastic gasket contacts the outer wall of the ball.

[0005] Preferably, the length of the ball extending out of the inner cavity of the blind groove is smaller than its own radius.

[0006] Preferably, the elastic gasket comprises a skeleton, a plurality of gaskets are equidistantly arranged on the outer wall of the skeleton along the circumferential direction, and the gaskets are embedded in the inner cavity of the slot.

[0007] Preferably, a buffer cavity is provided in the inner cavity of the gasket, and a plurality of fixing cores are circumferentially installed on the outer wall of the skeleton, and the plurality of fixing cores extend into the inner cavities of the plurality of buffer cavities respectively, and a spring is installed at the free end of the fixing core.

[0008] Preferably, the spring piece is arranged in an arc shape and is made of elastic material.

[0009] Preferably, the inner cavity of the buffer cavity is symmetrically provided with two rubber balls, and the rubber balls are respectively located on both sides of the spring sheet, and the outer wall of the rubber ball is in contact with the inner wall of the gasket, wherein the rubber ball is an ellipsoid made of rubber material.

[0010] Preferably, the rubber ball is a hollow cavity.

[0011] Preferably, connecting columns are respectively installed on the outer walls on the opposite sides of the first metal claw plate and the second metal claw plate, and an axial hole is opened at the center position of the outer wall of the connecting column.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the wear-resistant plum blossom coupling reduces the contact area between the elastic gasket and the first metal claw plate and the second metal claw plate through the contact between the ball and the outer wall of the elastic gasket. At the same time, the ball and the elastic gasket are in rolling contact to avoid static friction and greatly reduce friction. At the same time, when the gasket is deformed, the elastic force of the rubber ball and the spring sheet is used to resist the deformed outer wall, thereby reducing the deformation amplitude of the gasket and avoiding aging caused by long-term deformation. In actual use, the static friction between the first metal claw plate, the second metal claw plate and the elastic gasket can be reduced while reducing the base area, which can slow down aging and wear. At the same time, it can resist the force causing deformation, reduce the force of each deformation, slow down the aging rate of the elastic gasket, and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the installation state of the utility model.

[0015] Figure 3 It is a cross-sectional view of the gasket of the utility model.

[0016] In the figure: 1. first metal claw plate, 2. second metal claw plate, 3. elastic gasket, 31. frame, 32. gasket, 4. slot, 5. ball, 7. fixed core, 8. buffer cavity, 9. spring, 10. rubber ball, 11. connecting column, 12. shaft hole. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3 The utility model provides a technical solution of a wear-resistant plum blossom coupling: a wear-resistant plum blossom coupling, comprising: a first metal claw plate 1, a second metal claw plate 2 and an elastic gasket 3, the first metal claw plate 1, the second metal claw plate 2 and the elastic gasket 3 can be plugged into each other in sequence, and can rotate synchronously after being combined, the outer walls of the first metal claw plate 1 and the second metal claw plate 2 on opposite sides are respectively installed with connecting columns 11, and the center position of the outer wall of the connecting column 11 is provided with an axial hole 12, the two axial holes 12 are respectively connected to the shaft of the power output device and the shaft of the external device, so as to realize power transmission, when the first metal claw plate 1 and the second metal claw plate 2 are connected, the first metal claw plate 1 and the second metal claw plate 2 are connected, and the second metal claw plate 2 is connected, and the second metal claw plate 1 ... The rotation speed of the claw plate 2 changes, which can be compensated by the elasticity of the elastic gasket 3. The outer walls of the opposite sides of the first metal claw plate 1 and the second metal claw plate 2 are respectively provided with a plurality of slots 4 equidistantly arranged along the circumferential direction, and the slots 4 are adapted to the outer walls of the elastic gasket 3. During assembly, the elastic gasket 3 can be embedded in the inner cavity of the slot 4. The inner wall of the slot 4 is provided with a plurality of blind slots, and the inner cavity of the blind groove is rolled with a ball 5 embedded therein, and the outer wall of the ball 5 extends out of the inner cavity of the blind groove, and the elastic gasket 3 contacts the outer wall of the ball 5, wherein the length of the part of the ball 5 extending out of the inner cavity of the blind groove is less than its own radius, so as to prevent the ball 5 from escaping from the inner cavity of the blind groove.

[0019] In addition, the elastic gasket 3 includes a skeleton 31, and a plurality of gaskets 32 are equidistantly arranged on the outer wall of the skeleton 31 along the circumferential direction, and the gaskets 32 are embedded in the inner cavity of the card slot 4. The skeleton 31 and the gaskets 32 are both made of rubber and have a certain elastic deformation ability.

[0020] As a preferred solution, further, a buffer cavity 8 is opened in the inner cavity of the gasket 32, and a plurality of fixed cores 7 are installed along the circumferential direction on the outer wall of the skeleton 31, and the plurality of fixed cores 7 extend into the inner cavities of the plurality of buffer cavities 8 respectively, and a spring piece 9 is installed at the free end of the fixed core 7. The spring piece 9 is arranged in an arc shape and is made of elastic material. When the spring piece 9 is subjected to external force, it can undergo elastic deformation and return to its original state after the external force is removed. The preferred materials are: stainless steel or titanium alloy, and elastic hard plastic is also a preferred material.

[0021] As a preferred embodiment, further, the inner cavity of the buffer cavity 8 is symmetrically provided with two rubber balls 10, and the rubber balls 10 are respectively located on both sides of the spring piece 9, and the outer wall of the rubber ball 10 is in contact with the inner wall of the gasket 32. When the outer wall of the gasket 32 ​​is deformed, the rubber ball 10 can be deformed synchronously and squeeze the spring piece 9, thereby resisting the deformation force, wherein the rubber ball 10 is an ellipsoid made of rubber material, wherein the rubber ball 10 is a hollow cavity filled with gas, which can increase the elasticity and enhance the resistance to the deformation force.

[0022] The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0023] When in use, assemble the first metal claw plate 1, the second metal claw plate 2 and the elastic gasket 3 respectively, ensure that the outer wall sides of the elastic gasket 3 are respectively embedded in the slots 4 located on the outer walls of the first metal claw plate 1 and the second metal claw plate 2, and then connect the connecting column 11 of the outer walls of the first metal claw plate 1 and the second metal claw plate 2 to the power output end and the shaft of the external device. At this time, the outer wall of the elastic gasket 3 contacts the outer wall of the ball 5. When the external device is turned on, the first metal claw plate 1, the second metal claw plate 2 and the elastic gasket 3 rotate. When torsion occurs for compensation, the outer wall of the elastic gasket 3 rolls with the ball 5 to prevent the elastic gasket 3 from directly It contacts with the inner wall of the slot 4, reducing the friction. At the same time, when the gasket 32 ​​is deformed, it will squeeze the rubber ball 10, causing the rubber ball 10 to deform and use the elastic force of the rubber ball 10 to resist the deformation force. The spring piece 9 will also be elastically deformed due to the squeezing of the rubber ball 10 and resist the deformation force, which can prevent the gasket 32 ​​from aging prematurely due to excessive deformation. In actual use, it can not only reduce the contact area between the elastic gasket 3 and the first metal claw plate 1 and the second metal claw plate 2, but also ensure that the displacement of the contact surface is dynamic friction, thereby reducing friction. At the same time, it can resist the deformation force and reduce the deformation amplitude, thereby avoiding damage to the elastic gasket 3 and extending its service life.

[0024] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "center position", "other end", "upper", "one side", "top", "inside", "front", "center", "two ends" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation; at the same time, unless otherwise clearly specified and limited, the terms "snapping", "plugging", "welding", "installation", "setting", "interference fit", "screw connection", "pin connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant plum blossom coupling, characterized in that: include: A first metal claw plate (1), a second metal claw plate (2) and an elastic gasket (3), wherein the first metal claw plate (1), the second metal claw plate (2) and the elastic gasket (3) can be plugged into each other in sequence, and the first metal claw plate (1) and the second metal claw plate (2) have a plurality of slots (4) equidistantly formed on their outer walls along the circumferential direction, and the slots (4) are adapted to the outer wall of the elastic gasket (3), and the inner wall of the slots (4) is provided with a plurality of blind slots, and the inner cavity of the blind slot has a ball (5) embedded therein for rolling, and the outer wall of the ball (5) extends out of the inner cavity of the blind slot, and the elastic gasket (3) contacts the outer wall of the ball (5).

2. A wear-resistant plum blossom coupling according to claim 1, characterized in that: The length of the ball (5) extending out of the inner cavity of the blind groove is less than its own radius.

3. A wear-resistant plum blossom coupling according to claim 2, characterized in that: The elastic gasket (3) comprises a frame (31), a plurality of gaskets (32) are arranged equidistantly along the circumferential direction on the outer wall of the frame (31), and the gaskets (32) are embedded in the inner cavity of the card slot (4).

4. A wear-resistant plum blossom coupling according to claim 3, characterized in that: The inner cavity of the gasket (32) is provided with a buffer cavity (8), and the outer wall of the skeleton (31) is also provided with a plurality of fixed cores (7) circumferentially mounted thereon, and the plurality of fixed cores (7) respectively extend into the inner cavities of the plurality of buffer cavities (8), and a spring sheet (9) is mounted at the free end of the fixed core (7).

5. The wear-resistant plum blossom coupling according to claim 4, characterized in that: The spring piece (9) is arranged in an arc shape and is made of elastic material.

6. The wear-resistant plum blossom coupling according to claim 5, characterized in that: The inner cavity of the buffer cavity (8) is symmetrically provided with two rubber balls (10), and the rubber balls (10) are respectively located on both sides of the spring sheet (9), and the outer wall of the rubber ball (10) is in contact with the inner wall of the gasket (32), wherein the rubber ball (10) is an ellipsoid made of rubber material.

7. A wear-resistant plum blossom coupling according to claim 6, characterized in that: The rubber ball (10) is a hollow cavity.

8. A wear-resistant plum blossom coupling according to any one of claims 1 to 7, characterized in that: Connecting columns (11) are respectively installed on the outer walls of the first metal claw plate (1) and the second metal claw plate (2) on opposite sides, and an axial hole (12) is opened at the center of the outer wall of the connecting column (11).

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