Anti-falling shaft sleeve for power distribution control equipment

Abstract

The utility model discloses an anti-drop shaft sleeve for power distribution control equipment, which comprises a shaft sleeve body, a plurality of screw holes are formed in the front wall of the shaft sleeve body along the axis in an annular array manner, inner cavities are formed in the rear ends of the screw holes, through holes are formed in the side walls of the inner cavities and penetrate through the outer wall of the shaft sleeve body, and screw rods are arranged in the screw holes in a threaded connection manner. A plurality of inner cavities are formed in the screw rod, through holes are formed in the inner cavities, pushing blocks are movably arranged in the inner cavities, abutting blocks are movably arranged in the through holes, the screw rod is rotationally connected with one sides of the pushing blocks, the side, close to the abutting blocks, of the pushing blocks is provided with a first inclined face, and the side, close to the pushing blocks, of the abutting blocks is provided with a second inclined face. The threaded rod pushes the pushing block to move, under the action of the first inclined face, the second inclined face, the guide rail and the guide groove, the pushing block pushes the abutting block to move out of the through hole, the abutting block abuts against the inner wall of the shaft hole, and therefore the friction force between the shaft sleeve and the shaft sleeve hole and the installation stability can be effectively enhanced, and the problem that the shaft sleeve loosens and falls off is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of power distribution control equipment accessories, specifically to a bushing for power distribution control equipment that prevents detachment. Background Technology

[0002] A bushing is a component used to protect a shaft from wear and to allow sliding or rotational movement between the shaft and its supporting structure. It is typically a form of bearing, fitted onto the shaft to reduce friction between the shaft and the bore, while simultaneously bearing radial and / or axial loads, ensuring smooth operation of mechanical components. Bushings also provide sealing, dust protection, and a degree of correction to compensate for manufacturing tolerances or installation errors.

[0003] In the prior art, bushings are installed by pressing them directly into the bushing hole through an interference fit. However, the outer wall of such bushings is smooth. After frequent use and heat generation, the stability of the connection between the bushing and the bushing hole decreases, which may cause the bushing to loosen and fall off.

[0004] Therefore, the applicant has made beneficial designs and found a way to solve the above problems. The technical solution to be introduced below is generated in this context. Utility Model Content

[0005] The present invention provides a bushing for an anti-detachment power distribution control device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A bushing for an anti-detachment power distribution control device includes a bushing body. The front wall of the bushing body has a plurality of screw holes arranged in a circular array along its axis. Each screw hole has an inner cavity at its rear end. The side wall of each inner cavity has a through hole penetrating the outer wall of the bushing body. A screw is screwed into each screw hole. A push block is movably disposed within each inner cavity. A stop block is movably disposed within each through hole. The screw is rotatably connected to one side of the push block. The push block has a first inclined surface near the stop block, and the stop block has a second inclined surface near the push block. The first inclined surface has a guide rail, and the second inclined surface has a guide groove. The first inclined surface and the second inclined surface are in contact, and the guide rail and the guide groove are slidably connected.

[0008] Preferably, the side wall of the abutment near the opening of the through hole has an arc-shaped structure.

[0009] Beneficial effects

[0010] The above-mentioned technical solutions of one or more of the anti-detachment power distribution control equipment bushings provided in this embodiment of the utility model have at least one of the following technical effects:

[0011] This utility model, through the above-mentioned technical solution, moves the screw towards the inner cavity by tightening the screw, and the screw pushes the push block to move. Under the action of inclined plane one and inclined plane two, as well as the guide rail and guide groove, the push block pushes the abutment block to move outward of the through hole, so that the abutment block abuts against the inner wall of the shaft hole. This can effectively enhance the friction and installation stability between the bushing and the bushing hole, and avoid the problem of the bushing loosening and falling off. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0014] Figure 3 This is a schematic diagram of the connection structure between the push block and the stop block of this utility model;

[0015] Figure 4 This is a schematic diagram of the pusher block structure of this utility model;

[0016] Figure 5 This is a schematic diagram of the block structure of this utility model.

[0017] The correspondence between the labels and component names in the attached figures is as follows:

[0018] 1. Bushing body; 2. Screw hole; 3. Inner cavity; 4. Through hole; 5. Screw; 6. Push block; 7. Abutment block; 8. Inclined surface one; 9. Inclined surface two; 10. Guide rail; 11. Guide groove. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figure 1-5 The diagram shown is a structural schematic of a bushing for an anti-detachment power distribution control device according to a preferred embodiment of the present invention.

[0023] In this embodiment, a bushing body 1 is included. The front wall of the bushing body 1 is provided with a plurality of screw holes 2 arranged in a ring along the axis. The plurality of screw holes 2 are arranged in the same direction as the axis of the bushing body 1. The rear end of each screw hole 2 is provided with an inner cavity 3. The side wall of the inner cavity 3 is provided with a through hole 4 penetrating the outer wall of the bushing body 1. The inner cavity 3 and the through hole 4 form an "L"-shaped structure. Each screw hole 2 is screwed with a screw rod 5. Each inner cavity 3 is provided with a push block 6. Each through hole 4 is provided with a stop block 7. The screw rod 5 is rotatably connected to one side of the push block 6. The push block 6 is provided with a first inclined surface 8 on the side near the stop block 7. The stop block 7 is provided with a second inclined surface 9 on the side near the push block 6. The surface of the first inclined surface 8 is provided with a guide rail 10. The surface of the second inclined surface 9 is provided with a guide groove 11. The first inclined surface 8 and the second inclined surface 9 are in contact. The guide rail 10 and the guide groove 11 are slidably connected, and the stop block 7 is guided by the guide rail 10 and the guide groove 11. Tightening screw 5 causes it to move towards the inner cavity 3. Screw 5 pushes push block 6 to move. Under the action of inclined surface 8 and inclined surface 9, as well as guide rail 10 and guide groove 11, push block 6 pushes abutment block 7 to move outward from through hole 4, so that abutment block 7 abuts against the inner wall of shaft hole. This effectively enhances the friction and installation stability between bushing body 1 and bushing hole, and avoids the problem of bushing body 1 loosening and falling off.

[0024] In this embodiment, the side wall of the abutment 7 near the opening of the through hole 4 has an arc-shaped structure. The arc-shaped structure allows the abutment 7 to better fit the inner wall of the shaft hole.

[0025] The bushing for the anti-fall-off power distribution control equipment of this utility model has common mechanical methods in terms of installation, connection or setting. Any method that can achieve its beneficial effect can be implemented.

[0026] All technologies not described in detail in this utility model are known technologies. Those skilled in the art can easily implement this utility model based on their understanding of this specification, and the contents shown in the accompanying drawings are part of this specification.

[0027] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A bushing for an anti-detachment power distribution control device, characterized in that: The bushing body (1) includes a bushing body (1). The front wall of the bushing body (1) has several screw holes (2) arranged in a ring along the axis. Each screw hole (2) has an inner cavity (3) at its rear end. The sidewall of the inner cavity (3) has a through hole (4) penetrating the outer wall of the bushing body (1). Each screw hole (2) has a screw rod (5) screwed into it. Each inner cavity (3) has a movable push block (6). Each through hole (4) has a movable stop block (7). The screw rod (5)... The push block (6) is rotatably connected to one side of the push block (6). The push block (6) has a first inclined surface (8) on the side near the abutment block (7). The abutment block (7) has a second inclined surface (9) on the side near the push block (6). The first inclined surface (8) has a guide rail (10) on its surface. The second inclined surface (9) has a guide groove (11) on its surface. The first inclined surface (8) and the second inclined surface (9) are in contact. The guide rail (10) and the guide groove (11) are slidably connected.

2. The bushing for an anti-detachment power distribution control device according to claim 1, characterized in that: The side wall of the abutment (7) near the opening of the through hole (4) has an arc-shaped structure.

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