Permanent magnet coupling

Abstract

The utility model discloses a permanent magnet coupler, which relates to the technical field of couplings and comprises a coupler body, and a first protective cover and a second protective cover which are clamped on the left side and the right side of the coupler body and are used for protecting the coupler body, in the process that the first protective cover is clamped to the second protective cover, the connecting frame connected to one side of the first protective cover can drive the first clamping block to be inserted into the mounting frame, then the first clamping block can extrude the second clamping block to move towards one side, the first protective cover is clamped to the second protective cover, and the second protective cover is clamped to the mounting frame. When the first clamping block is completely inserted into the mounting frame, the second clamping block can limit the first clamping block, so that the first protective cover and the second protective cover are fixed, and the fixing effect of the first protective cover and the second protective cover can be improved. And the situation that the first protective cover and the second protective cover are thrown away by centrifugal force in the using process is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of couplings, and specifically relates to a permanent magnet coupling. Background Art

[0002] A coupling is a device that connects two shafts or a shaft and a rotating part, and rotates together during the transmission of motion and power, and does not disengage under normal circumstances. 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. Sometimes it is also used as a safety device to prevent the connected parts from being subjected to excessive loads, playing the role of overload protection;

[0003] The existing Chinese patent (application number: CN201922044253.X) discloses a permanent magnetic coupling, including: an active disk and a heat dissipation structure, wherein the active disk includes a disk surface, and the disk surface is partially concave to form a ventilation slot; the heat dissipation structure is detachably connected to the active disk and is arranged on the disk surface on the side of the ventilation slot. The ventilation slot is provided, on the one hand, to reduce the weight of the active disk, and on the other hand, to provide flowing air for the heat dissipation of the heat dissipation structure, increase the ventilation volume between the heat dissipation structure and the active disk, and reduce the temperature of the permanent magnetic coupling when it rotates;

[0004] A Chinese patent (application number: CN202320494418.7) discloses a permanent magnet coupling dustproof device, including a first dust cover, a second dust cover movably arranged inside the first dust cover, and the first dust cover and the second dust cover are both columnar structures; an end plate is detachably installed at the end of the second dust cover, and the surface of the second dust cover is a solid closed structure.

[0005] Permanent magnet couplings are often used in situations where the ferromagnetic dust content is relatively high. However, the permanent magnets of permanent magnet couplings are not fully enclosed structures. Ferromagnetic dust will be adsorbed to the surface of the permanent magnets, and will accumulate more and more over time, causing the air gap of the permanent magnet coupling to decrease, thereby affecting its magnetic transmission effect. In the prior art, the coupling is protected by using two pluggable protective covers, but because it is a detachable gap plug-in method, when the speed is too fast during the transmission process of the coupling, the protective cover may fall off due to centrifugal force.

[0006] In view of this, this application is hereby filed. Utility Model Content

[0007] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, provide a permanent magnet coupling, and achieve the purpose of improving the dustproof effect of the coupling.

[0008] In order to solve the above technical problems, the permanent magnet coupling provided by the utility model includes: a coupling body, a first protective cover and a second protective cover which are clamped on the left and right sides of the coupling body to protect the coupling body; the second protective cover is provided with a disassembly and assembly component for fixing the first protective cover, the disassembly and assembly component includes a plurality of connecting frames connected to the first protective cover, one side of the connecting frame is connected to a first clamping block, the second protective cover is connected to an installation frame, one end of the first clamping block is inserted into the installation frame, a second clamping block is slidably connected in the installation frame to limit the first clamping block, the other end of the second clamping block is connected to a compression spring, and the other end of the compression spring is connected to the inner wall of the installation frame.

[0009] Furthermore, there are two groups of disassembly and assembly components, one group of the disassembly and assembly components fixes one side of the first protective cover and the second protective cover, and each group of the disassembly and assembly components includes two connecting frames, and the two connecting frames are symmetrically connected to one side of the first protective cover.

[0010] Furthermore, one side of the first clamping block is configured to be wedge-shaped, and one side of the second clamping block is configured to be provided with a trapezoidal inclined surface that matches the first clamping block.

[0011] Furthermore, one side of the second clamping block is connected to a connecting block, one side of the connecting block is connected to a transmission block, and the transmission block passes through one of the installation frames and extends into the other installation frame.

[0012] Furthermore, a guide block is connected to the other side of the second clamping block, and the guide block is slidably connected in the installation frame. A sliding groove adapted to the guide block is provided in the installation frame.

[0013] Furthermore, a limiting assembly for improving the fixing effect of the first protective cover and the second protective cover is provided at the other end of the transmission block, and the limiting assembly includes a force plate rotatably connected to one end of the transmission block, and the first protective cover is connected to a fixing block, and the fixing block is provided with a limiting groove adapted to the force plate, and the fixing block is connected to a Velcro for fixing the force plate.

[0014] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art.

[0015] 1. In the utility model, in the process of clamping the first protective cover to the second protective cover, the connecting frame connected to one side of the first protective cover can drive the first clamping block to be inserted into the installation frame, and then the first clamping block can squeeze the second clamping block to move to one side. When the first clamping block is fully inserted into the installation frame, the second clamping block can limit the first clamping block, thereby completing the fixation of the first protective cover and the second protective cover. This setting can enhance the fixing effect of the first protective cover and the second protective cover, and avoid the situation where the first protective cover and the second protective cover are thrown away by centrifugal force during use.

[0016] 2. In the present invention, the force plate is rotated so that it is inserted into the limiting groove to limit the position of the force plate, and then the Velcro is used to reposition the position of the force plate, thereby preventing the force plate from causing the transmission block to shift in position. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a side view of the utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the transmission block and the mounting frame of the utility model;

[0021] Figure 4 This is a schematic diagram of the connection structure of the limit assembly in the utility model;

[0022] Figure 5 It is a schematic diagram of the connection structure of the disassembly and assembly components in the utility model.

[0023] Numbers in the figure:

[0024] 1. First protective cover; 2. Second protective cover; 3. Disassembly and assembly components; 301. Connecting frame; 302. First clamping block; 303. Mounting frame; 304. Second clamping block; 305. Compression spring; 4. Connecting block; 5. Transmission block; 6. Guide block; 7. Limiting assembly; 701. Force plate; 702. Fixing block; 703. Limiting groove; 704. Velcro; 8. Coupling body.

[0025] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Embodiment 1

[0030] The utility model provides a permanent magnetic coupling, reference Figure 1-5 , including: a coupling body 8, a first protective cover 1 and a second protective cover 2 which are clamped on the left and right sides of the coupling body 8 to protect the coupling body 8, a disassembly assembly 3 for fixing the first protective cover 1 is provided on the second protective cover 2, the disassembly assembly 3 includes a plurality of connecting frames 301 connected to the first protective cover 1, one side of the connecting frame 301 is connected to a first clamping block 302, the second protective cover 2 is connected to an installation frame 303, one end of the first clamping block 302 is plugged into the installation frame 303, an installation opening for the first clamping block 302 to be plugged into is opened on the installation frame 303, a second clamping block 304 for limiting the first clamping block 302 is slidably connected in the installation frame 303, the other end of the second clamping block 304 is connected to a compression spring 305, and the other end of the compression spring 305 is connected to the inner wall of the installation frame 303.

[0031] The disassembly and assembly components 3 provided can enhance the fixing effect of the first protective cover 1 and the second protective cover 2, and prevent the first protective cover 1 and the second protective cover 2 from being thrown apart by centrifugal force during use. In the process of clamping the first protective cover 1 to the second protective cover 2, the connecting frame 301 connected to one side of the first protective cover 1 can drive the first clamping block 302 to be inserted into the installation frame 303, and then the first clamping block 302 can squeeze the second clamping block 304 to move to one side. When the first clamping block 302 is fully inserted into the installation frame 303, the second clamping block 304 can limit the first clamping block 302, thereby completing the fixing of the first protective cover 1 and the second protective cover 2.

[0032] Specifically, refer to Figure 1 and Figure 2 There are two groups of disassembly and assembly components 3. One group of disassembly and assembly components 3 fixes one side of the first protective cover 1 and the second protective cover 2. Each group of disassembly and assembly components 3 includes two connecting frames 301. The two connecting frames 301 are symmetrically connected to one side of the first protective cover 1.

[0033] This arrangement facilitates fixing both sides of the first protective cover 1 and the second protective cover 2, and the arrangement of four groups symmetrically arranged on both sides of the first protective cover 1 and the second protective cover 2 also improves the uniformity of force, further improving the fixing effect of the first protective cover 1 and the second protective cover 2.

[0034] Specifically, refer to Figure 5 One side of the first clamping block 302 is set to be wedge-shaped, and one side of the second clamping block 304 is set with a trapezoidal inclined surface adapted to the first clamping block 302.

[0035] This arrangement allows the first clamping block 302 to squeeze the second clamping block 304 to move to one side during the downward movement, without the need to pull the second clamping block 304 while plugging the first clamping block 302, thereby improving the convenience of fixing the first protective cover 1 and the second protective cover 2.

[0036] Specifically, refer to Figure 1 and Figure 3 One side of the second clamping block 304 is connected to a connecting block 4 , one side of the connecting block 4 is connected to a transmission block 5 , and the transmission block 5 passes through one of the installation frames 303 and extends into the other installation frame 303 .

[0037] The connecting block 4 and the transmission block 5 can be used in conjunction with each other, so that the operator can use one transmission block 5 to drive the two second clamping blocks 304 to move, which is convenient for operation.

[0038] Specifically, refer to Figure 5 The other side of the second clamping block 304 is connected with a guide block 6 , and the guide block 6 is slidably connected in the installation frame 303 , and a sliding groove adapted to the guide block 6 is opened in the installation frame 303 .

[0039] This arrangement provides a limiting and guiding effect on the movement of the second clamping block 304 , improves the sliding stability of the second clamping block 304 , and also facilitates the installation of the second clamping block 304 .

[0040] Embodiment 2, based on embodiment 1

[0041] The other end of the transmission block 5 is provided with a limiting component 7 for improving the fixing effect of the first protective cover 1 and the second protective cover 2. The limiting component 7 includes a force plate 701 rotatably connected to one end of the transmission block 5. The first protective cover 1 is connected to a fixing block 702. The fixing block 702 is provided with a limiting groove 703 adapted to the force plate 701. The fixing block 702 is connected to a Velcro 704 for fixing the force plate 701.

[0042] Preferably, the Velcro 704 is divided into a mother-and-child tape and is respectively connected to two sides of the fixing block 702 .

[0043] After the disassembly and assembly component 3 is positioned, a limit component 7 is designed to prevent the transmission block 5 from being displaced. The force plate 701 is rotated so that the force plate 701 is inserted into the limit groove 703 to limit the force plate 701. Then, the Velcro 704 is used to re-position the position of the force plate 701, thereby preventing the force plate 701 from causing the transmission block 5 to be displaced.

[0044] Working principle: The disassembly and assembly component 3 is provided to enhance the fixing effect of the first protective cover 1 and the second protective cover 2, and prevent the first protective cover 1 and the second protective cover 2 from being thrown away by centrifugal force during use. In the process of clamping the first protective cover 1 to the second protective cover 2, the connecting frame 301 connected to one side of the first protective cover 1 can drive the first clamping block 302 to be inserted into the installation frame 303, and then the first clamping block 302 can squeeze the second clamping block 304 to move to one side. When the first clamping block 302 is fully inserted into the installation frame 303, the second clamping block 304 can limit the first clamping block 302, thereby completing the fixing of the first protective cover 1 and the second protective cover 2;

[0045] The force plate 701 is rotated so that it is inserted into the limiting groove 703 to limit the force plate 701, and then the position of the force plate 701 is repositioned using the Velcro 704, thereby preventing the force plate 701 from causing the transmission block 5 to shift in position.

[0046] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. Permanent magnetic coupling, including: Coupling body (8); A first protective cover (1) and a second protective cover (2) which are clamped on the left and right sides of the coupling body (8) to protect the coupling body (8); The second protective cover (2) is provided with a disassembly and assembly component (3) for fixing the first protective cover (1); The invention is characterized in that the disassembly and assembly component (3) comprises a plurality of connection frames (301) connected to the first protective cover (1); a first clamping block (302) is connected to one side of the connection frame (301); a mounting frame (303) is connected to the second protective cover (2); one end of the first clamping block (302) is inserted into the mounting frame (303); a second clamping block (304) for limiting the first clamping block (302) is slidably connected in the mounting frame (303); the other end of the second clamping block (304) is connected to a compression spring (305); and the other end of the compression spring (305) is connected to the inner wall of the mounting frame (303).

2. The permanent magnetic coupling according to claim 1, characterized in that: The number of the disassembly and assembly components (3) is two groups, one group of the disassembly and assembly components (3) fixes one side of the first protective cover (1) and the second protective cover (2), and each group of the disassembly and assembly components (3) includes two connecting frames (301), and the two connecting frames (301) are symmetrically connected to one side of the first protective cover (1).

3. The permanent magnetic coupling according to claim 1, characterized in that: One side of the first clamping block (302) is arranged in a wedge shape, and one side of the second clamping block (304) is arranged with a trapezoidal inclined surface adapted to the first clamping block (302).

4. The permanent magnetic coupling according to claim 1, characterized in that: One side of the second clamping block (304) is connected to a connecting block (4), one side of the connecting block (4) is connected to a transmission block (5), and the transmission block (5) passes through one of the installation frames (303) and extends into the other installation frame (303).

5. The permanent magnetic coupling according to claim 1, characterized in that: The other side of the second clamping block (304) is connected to a guide block (6), and the guide block (6) is slidably connected in the installation frame (303). A sliding groove adapted to the guide block (6) is provided in the installation frame (303).

6. The permanent magnetic coupling according to claim 4, characterized in that: The other end of the transmission block (5) is provided with a limiting assembly (7) for improving the fixing effect of the first protective cover (1) and the second protective cover (2), the limiting assembly (7) includes a force plate (701) rotatably connected to one end of the transmission block (5), the first protective cover (1) is connected to a fixing block (702), the fixing block (702) is provided with a limiting groove (703) adapted to the force plate (701), and the fixing block (702) is connected to a Velcro (704) for fixing the force plate (701).

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