Coupling for motor

Abstract

The utility model relates to the technical field of couplings, and discloses a coupler for a motor, which comprises a main shaft mechanism, a telescopic shaft mechanism and a fixing mechanism, the inner wall of the side surface of the main shaft mechanism is movably connected with the side surface of the telescopic shaft mechanism, and the inner wall of the side surface of the fixing mechanism is in threaded connection with the side surface of the main shaft mechanism. The main shaft mechanism comprises a main shaft main body, and the telescopic shaft mechanism comprises a telescopic shaft main body; the fastening ring is placed at the right end of the main shaft body, the fixing nut is installed on the main shaft body through the external threads and arranged on the fastening ring in a sleeved mode, then the telescopic shaft body is inserted into the main shaft body, the clamping teeth are meshed with the clamping grooves, and the main shaft mechanism and the telescopic shaft mechanism are integrally kept to be proper in length according to use requirements. And then the fixing nut is tightened, the inner wall of the fixing nut extrudes the fastening ring, the fastening ring is tightly attached to the side face of the telescopic shaft body, the telescopic shaft body is fixed, and the flexibility of the coupler is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, and more particularly to a coupling for an electric motor. Background Art

[0002] An electric motor is a device that converts electrical energy into mechanical energy. During use, a coupling is mostly used to connect the output shaft of the electric motor to the input shaft of other devices. A coupling refers to a device that connects two shafts or a shaft and a rotating part, rotates together during the transmission of motion and power, and does not disengage under normal circumstances. Sometimes it is also used as a safety device to prevent the connected parts from bearing excessive loads and play a role in overload protection.

[0003] Deficiencies of the prior art: Most existing couplings have a fixed structure, and the length of the coupling cannot be adjusted flexibly. When the electric motor is installed, there will be a position deviation, and it is impossible to accurately connect the output shaft of the electric motor to other shafts. At the same time, the installation requirements for different spacings cannot be met. Summary of the Utility Model

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a coupling for an electric motor to solve the problems existing in the above background art.

[0005] To achieve the above object, the utility model provides the following technical solution: A coupling for an electric motor includes a main shaft mechanism, and further includes: a telescopic shaft mechanism and a fixing mechanism. The side inner wall of the main shaft mechanism is movably connected to the side of the telescopic shaft mechanism, and the side inner wall of the fixing mechanism is threadedly connected to the side of the main shaft mechanism. The main shaft mechanism includes a main shaft body, a first mounting flange is fixedly connected to the side of the main shaft body, and a card slot is provided on the side inner wall of the main shaft body. The telescopic shaft mechanism includes a telescopic shaft body, a card tooth is fixedly connected to the side of the telescopic shaft body, and the side of the card tooth is meshed with the side of the card slot. A second mounting flange is fixedly connected to the side of the telescopic shaft body, an external thread is provided on the side of the main shaft body, the fixing mechanism includes a fixing nut, and the side inner wall of the fixing nut is threadedly connected to the side of the external thread. A fastening ring is movably connected to the main shaft body, and the side inner wall of the fastening ring is movably connected to the side of the telescopic shaft body.

[0006] Further, a scale is provided on the side of the telescopic shaft body.

[0007] Further, an elastic clamping block is fixedly connected to the side of the fastening ring, a first inclined surface is provided on the side of the elastic clamping block, and a second inclined surface is provided on the side inner wall of the fixing nut corresponding to the position of the first inclined surface.

[0008] Further, a positioning groove is provided on the side surface of the main shaft body, a first arc angle is provided on the side surface of the positioning groove, a positioning block is fixedly connected to the side surface of the fastening ring, the side surface of the positioning block meshes with the side surface of the positioning groove, and a second arc angle is provided on the side surface of the positioning block.

[0009] Further, a wire groove is provided on the inner side wall of the side surface of the elastic clamping block, an anti-slip groove is provided on the side surface of the fixed nut, and the surface of the telescopic shaft body is subjected to matte treatment.

[0010] Further, both the main shaft mechanism and the telescopic shaft mechanism are of integral structure.

[0011] The technical effects and advantages of the present utility model:

[0012] 1. In the present utility model, the fastening ring is placed at the right end of the main shaft body, the fixed nut is installed on the main shaft body through external threads and sleeved on the fastening ring, then the telescopic shaft body is inserted into the main shaft body, and the teeth are meshed with the slots. According to the use requirements, the overall length of the main shaft mechanism and the telescopic shaft mechanism is kept appropriate. Then, the fixed nut is tightened so that the inner wall of the fixed nut presses the fastening ring to make the fastening ring closely adhere to the side surface of the telescopic shaft body to fix the telescopic shaft body. The coupling is installed by passing bolts through the first mounting flange and the second mounting flange to separately connect the output shaft of the motor and the input shaft of other equipment, which is beneficial to improving the flexibility of the coupling.

[0013] 2. When the fixed nut is tightened by external threads in the present utility model, the second inclined surface on the inner wall of the fixed nut contacts and presses the first inclined surface on the side surface of the elastic clamping block to make the inner wall of the elastic clamping block closely adhere to the side surface of the telescopic shaft body to fix the telescopic shaft body. When it is necessary to adjust the exposed length of the telescopic shaft body, the fixed nut is loosened to separate the second inclined surface from the first inclined surface, the elastic clamping block resets and separates from the side surface of the telescopic shaft body, and the telescopic shaft body can be pulled. The structure is simple and convenient to operate, which is beneficial to improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the main shaft mechanism structure of the present utility model;

[0016] Figure 3 is a schematic diagram of the telescopic shaft mechanism structure of the present utility model;

[0017] Figure 4 is a schematic diagram of the fixing mechanism structure of the present utility model.

[0018] The reference numerals are: 1, main shaft mechanism; 101, main shaft body; 102, first mounting flange; 103, external thread; 104, positioning groove; 105, first arc angle; 106, clamping groove; 2, telescopic shaft mechanism; 201, telescopic shaft body; 202, second mounting flange; 203, scale; 204, locking teeth; 3, fixing mechanism; 301, fixing nut; 302, anti-slip groove; 303, fastening ring; 304, positioning block; 305, first inclined surface; 306, wire groove; 307, elastic clamping block. Detailed implementation mode

[0019] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. In addition, the forms of each structure described in the following implementation modes are merely examples, and a coupling for a motor related to the present invention is not limited to the structures described in the following implementation modes. All other implementation modes obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0020] Refer to Figures 1 to 4, the present utility model provides a coupling for a motor, including a main shaft mechanism 1, and further including: a telescopic shaft mechanism 2 and a fixing mechanism 3. The side inner wall of the main shaft mechanism 1 is movably connected to the side of the telescopic shaft mechanism 2, and the side inner wall of the fixing mechanism 3 is threadedly connected to the side of the main shaft mechanism 1. The main shaft mechanism 1 includes a main shaft body 101, a first mounting flange 102 is fixedly connected to the side of the main shaft body 101, a card slot 106 is provided on the side inner wall of the main shaft body 101. The telescopic shaft mechanism 2 includes a telescopic shaft body 201, a card tooth 204 is fixedly connected to the side of the telescopic shaft body 201, and the side of the card tooth 204 meshes with the side of the card slot 106. A second mounting flange 202 is fixedly connected to the side of the telescopic shaft body 201. An external thread 103 is provided on the side of the main shaft body 101. The fixing mechanism 3 includes a fixing nut 301, and the side inner wall of the fixing nut 301 is threadedly connected to the side of the external thread 103. A fastening ring 303 is movably connected to the main shaft body 101, and the side inner wall of the fastening ring 303 is movably connected to the side of the telescopic shaft body 201. During assembly, the fastening ring 303 is placed at the right end of the main shaft body 101, and the fixing nut 301 is installed on the main shaft body 101 through the external thread 103 and sleeved on the fastening ring 303. Then, the telescopic shaft body 201 is inserted into the main shaft body 101, and the card tooth 204 is meshed with the card slot 106. According to the use requirements, the overall length of the main shaft mechanism 1 and the telescopic shaft mechanism 2 is kept appropriate. Then, the fixing nut 301 is tightened so that the inner wall of the fixing nut 301 presses the fastening ring 303 to make the fastening ring 303 closely adhere to the side of the telescopic shaft body 201 to fix the telescopic shaft body 201. The coupling is installed by passing bolts through the first mounting flange 102 and the second mounting flange 202 to separately connect the motor output shaft and the input shaft of other equipment.

[0021] Wherein, a scale 203 is provided on the side of the telescopic shaft body 201, and the overall length of the main shaft mechanism 1 and the telescopic shaft mechanism 2 can be quickly determined through the scale 203.

[0022] Wherein, an elastic clamping block 307 is fixedly connected to the side of the fastening ring 303, a first inclined surface 305 is provided on the side of the elastic clamping block 307, and a second inclined surface is provided on the side inner wall of the fixing nut 301 corresponding to the position of the first inclined surface 305. When the fixing nut 301 is tightened through the external thread 103, the second inclined surface on the inner wall of the fixing nut 301 contacts and presses the first inclined surface 305 on the side of the elastic clamping block 307 to make the inner wall of the elastic clamping block 307 closely adhere to the side of the telescopic shaft body 201 to fix the telescopic shaft body 201. When the exposed length of the telescopic shaft body 201 needs to be adjusted, the fixing nut 301 is loosened to separate the second inclined surface from the first inclined surface 305, and the elastic clamping block 307 resets and separates from the side of the telescopic shaft body 201, facilitating the movement of the telescopic shaft body 201.

[0023] Among them, a positioning groove 104 is provided on the side surface of the main shaft body 101, a first arc angle 105 is provided on the side surface of the positioning groove 104, a positioning block 304 is fixedly connected to the side surface of the fastening ring 303, the side surface of the positioning block 304 meshes with the side surface of the positioning groove 104, a second arc angle is provided on the side surface of the positioning block 304. When the fastening ring 303 is placed at the right end of the main shaft body 101, the positioning block 304 is inserted into the positioning groove 104, preventing the anti-slip groove 302 from rotating when the fixing nut 301 is rotated, causing the side surface of the telescopic shaft body 201 to slide against the inner side wall of the elastic clamping block 307, resulting in wear and reducing the friction force, thus affecting the fixing effect.

[0024] Among them, a wire groove 306 is provided on the inner side wall of the side surface of the elastic clamping block 307, an anti-slip groove 302 is provided on the side surface of the fixing nut 301, and the surface of the telescopic shaft body 201 is subjected to sandblasting treatment, facilitating the rotation of the fixing nut 301 and increasing the friction force between the inner side wall of the side surface of the elastic clamping block 307 and the side surface of the telescopic shaft body 201, improving the stability.

[0025] Among them, both the main shaft mechanism 1 and the telescopic shaft mechanism 2 are integral structures.

[0026] The working principle of the present utility model: During assembly, the fastening ring 303 is placed at the right end of the main shaft body 101, the positioning block 304 is inserted into the positioning groove 104, preventing the anti-slip groove 302 from rotating when the fixing nut 301 is rotated. The fixing nut 301 is installed on the main shaft body 101 through the external thread 103 and sleeved on the fastening ring 303. Then, the telescopic shaft body 201 is inserted into the main shaft body 101, and the engaging teeth 204 are meshed with the card slots 106. According to the use requirements, the telescopic shaft body 201 is pulled to make the telescopic shaft body 201 slide along the inner wall of the main shaft body 101, and the overall length of the coupling is kept appropriate through the scale 203. Then, the fixing nut 301 is tightened so that the second inclined surface on the inner wall of the fixing nut 301 contacts and presses the elastic clamping block 307 against the first inclined surface 305 on the side surface of the elastic clamping block 307, causing the inner wall of the elastic clamping block 307 to closely adhere to the side surface of the telescopic shaft body 201 to fix the telescopic shaft body 201. The coupling is installed by passing bolts through the first mounting flange 102 and the second mounting flange 202 to separately connect the output shaft of the motor and the input shaft of other equipment. When it is necessary to adjust the exposed length of the telescopic shaft body 201, the fixing nut 301 is loosened to separate the second inclined surface from the first inclined surface 305, the elastic clamping block 307 resets and separates from the side surface of the telescopic shaft body 201, and the telescopic shaft body 201 is pulled to the appropriate length.

[0027] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A coupling for an electric motor, comprising a main shaft mechanism (1), characterized in that, It also includes: A telescopic shaft mechanism (2) and a fixing mechanism (3). The inner side wall of the side surface of the main shaft mechanism (1) is movably connected to the side surface of the telescopic shaft mechanism (2), and the inner side wall of the side surface of the fixing mechanism (3) is threadedly connected to the side surface of the main shaft mechanism (1). The main shaft mechanism (1) includes a main shaft body (101). A first mounting flange (102) is fixedly connected to the side surface of the main shaft body (101). A clamping groove (106) is formed in the inner side wall of the side surface of the main shaft body (101). The telescopic shaft mechanism (2) includes a telescopic shaft body (201). A clamping tooth (204) is fixedly connected to the side surface of the telescopic shaft body (201). The side surface of the clamping tooth (204) is engaged with the side surface of the clamping groove (106). A second mounting flange (202) is fixedly connected to the side surface of the telescopic shaft body (201). An external thread (103) is formed in the side surface of the main shaft body (101). The fixing mechanism (3) includes a fixing nut (301). The inner side wall of the side surface of the fixing nut (301) is threadedly connected to the side surface of the external thread (103). A fastening ring (303) is movably connected to the main shaft body (101). The inner side wall of the side surface of the fastening ring (303) is movably connected to the side surface of the telescopic shaft body (201).

2. The coupling for an electric motor according to claim 1, wherein: A scale (203) is provided on the side surface of the telescopic shaft body (201).

3. The coupling for an electric motor according to claim 1, characterized in that: An elastic clamping block (307) is fixedly connected to the side surface of the fastening ring (303). A first inclined surface (305) is formed in the side surface of the elastic clamping block (307). A second inclined surface is provided at the position corresponding to the first inclined surface (305) on the inner side wall of the side surface of the fixing nut (301).

4. The coupling for an electric motor according to claim 3, characterized in that: A positioning groove (104) is formed in the side surface of the main shaft body (101). A first arc angle (105) is formed in the side surface of the positioning groove (104). A positioning block (304) is fixedly connected to the side surface of the fastening ring (303). The side surface of the positioning block (304) is engaged with the side surface of the positioning groove (104). A second arc angle is formed in the side surface of the positioning block (304).

5. The coupling for a motor according to claim 3, characterized in that: A wire groove (306) is formed in the inner side wall of the side surface of the elastic clamping block (307). An anti-slip groove (302) is formed in the side surface of the fixing nut (301). The surface of the telescopic shaft body (201) is subjected to matte treatment.

6. A coupling for an electric motor according to claim 1, characterized in that: Both the main shaft mechanism (1) and the telescopic shaft mechanism (2) are of integral structure.

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