Self-braking gear motor for high-voltage switch

Abstract

The utility model discloses a self-braking speed reduction motor for a high-voltage switch, which comprises a speed reduction box, a motor is fixedly connected to the upper side of the speed reduction box, an output shaft is arranged on the upper side of the speed reduction box, a speed reduction unit is arranged on the upper side of the motor, the speed reduction unit comprises a rotating shaft, and the rotating shaft is arranged on the upper side of the motor. A friction plate is fixedly connected to the outer side of the rotating shaft, a protective cover is arranged on the upper side of the motor, a first spring is fixedly connected to the top of the inner side of the protective cover, a lifting plate is fixedly connected to the lower side of the first spring, and an electromagnet is arranged between the lifting plate and the protective cover; the lower sides of the left end and the right end of the lifting plate are fixedly connected with connecting frames. By arranging the first spring, the electromagnet, the brake pad and the friction plate, when the motor is powered off, the rotating shaft of the motor can be decelerated conveniently, and by means of the connecting frame, the front plate, the connecting block, the pull plate, the pull handle and the second spring, the brake pad can be quickly detached conveniently, and replacement of the brake pad in the later period is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of reduction motors, in particular to a self-braking reduction motor for high-voltage switches. Background Art

[0002] High-voltage switch is an electrical product used in power systems, mainly used to control and protect power lines and equipment. When controlling the opening and closing of high-voltage switches, a reduction motor is required to control the opening and closing.

[0003] After searching, the application number is "201721702738.8", which provides a self-braking reduction motor for a high-voltage switch. When in use, the extended end of the output shaft of the reduction box in the self-braking reduction motor for a high-voltage switch of the utility model is connected to the opening and closing of the high-voltage switch through a transmission mechanism. When the reduction motor is operating normally, the motor is powered on and rotates, and the coil is also powered on to generate suction to adsorb the brake pad, so that the brake pad and the friction pad are not in contact, and the friction pad rotates with the motor shaft. At the same time, the brake pad squeezes the compression spring to store energy. After the torque of the motor rotation is decelerated by the reduction box, it is transmitted to the opening and closing of the high-voltage switch through the output shaft to control its opening or closing. When the motor is powered off, the coil is also powered off, and the compressed spring energy is released to push out the brake pad, so that it contacts the friction pad, generating a huge friction force, causing the friction pad and the motor shaft connected to it to stop rotating instantly, thereby achieving the effect of automatic braking.

[0004] The above-mentioned method of controlling the contact between the brake pad and the friction pad on the rotating shaft of the motor facilitates deceleration of the rotating shaft of the motor. When the high-voltage switch needs to be repeatedly controlled to open and close, the brake pad needs to be repeatedly controlled to contact with the friction pad, which makes the brake pad easy to be damaged and difficult to remove, increasing the workload of the subsequent maintenance staff. Utility Model Content

[0005] In order to overcome the disadvantages of the prior art that brake pads are used to decelerate the rotating shaft and the brake pads are inconvenient to replace, one of the purposes of the utility model is to provide a self-braking deceleration motor for a high-voltage switch.

[0006] One of the purposes of the utility model is achieved by the following technical solution: a self-braking reduction motor for a high-voltage switch, comprising a reduction box, a motor is fixedly connected to the upper side of the reduction box, an output shaft is arranged on the upper side of the reduction box: a reduction unit is arranged on the upper side of the motor;

[0007] The deceleration unit includes a rotating shaft, which is arranged on the upper side of the motor, a friction plate is fixedly connected to the outer side of the rotating shaft, a protective cover is arranged on the upper side of the motor, a spring 1 is fixedly connected to the top of the inner side of the protective cover, a lifting plate is fixedly connected to the lower side of the spring 1, an electromagnet is arranged between the lifting plate and the protective cover, a connecting frame is fixedly connected to the lower side of the left and right ends of the lifting plate, a connecting block is arranged on the lower side of the connecting frame, a brake plate is fixedly connected to the lower side of the connecting block, a front plate is fixedly connected to the front side of the connecting frame, a mounting block is arranged on the outer side of the front plate, a rear end of the mounting block passes through the front plate and the connecting block, a pull plate is fixedly connected to the front side of the mounting block, and a spring 2 is fixedly connected between the pull plate and the front plate.

[0008] According to the self-braking reduction motor for a high-voltage switch, the upper end of the connecting block passes through the upper side of the connecting frame.

[0009] According to the self-braking reduction motor for a high-voltage switch, the connection block is slidably connected to the connection frame, and the mounting block is slidably connected to the front plate.

[0010] According to the self-braking reduction motor for a high-voltage switch, a pull handle is fixedly connected to the front side of the pull plate, which facilitates pulling the pull plate.

[0011] According to the self-braking reduction motor for a high-voltage switch, the mounting block is slidably connected to the connecting block.

[0012] According to the self-braking reduction motor for a high-voltage switch, bolts are provided between the protective cover and the motor, so as to facilitate the removal of the protective cover.

[0013] Beneficial effects:

[0014] By arranging the spring one, the electromagnet, the brake pad and the friction pad, the rotating shaft of the motor can be decelerated when the motor is powered off, and the brake pad can be quickly disassembled through the connecting frame, the front plate, the connecting block, the pulling plate, the pulling handle and the spring two, so as to facilitate the replacement of the brake pad at a later time.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 This is the overall three-dimensional structural diagram of a self-braking reduction motor for a high-voltage switch of the utility model;

[0018] Figure 2This is a three-dimensional structural diagram of a self-braking reduction motor for a high-voltage switch without a protective cover;

[0019] Figure 3 This is a partially cutaway stereoscopic structural diagram of a reduction unit in a self-braking reduction motor for a high-voltage switch of the utility model;

[0020] Figure 4 This is a partial three-dimensional structural diagram of a reduction unit in a self-braking reduction motor for a high-voltage switch of the utility model;

[0021] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0022] Legend:

[0023] 1. Gearbox; 2. Output shaft; 3. Motor; 4. Gear reduction unit; 401. Rotating shaft; 402. Friction plate; 403. Protective cover; 404. Spring 1; 405. Electromagnet; 406. Lifting plate; 407. Connecting frame; 408. Connecting block; 409. Brake pad; 410. Front plate; 411. Mounting block; 412. Pull plate; 413. Pull handle; 414. Spring 2. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0025] Reference Figure 1-5 A self-braking reduction motor for a high-voltage switch comprises a reduction box 1, a motor 3 is fixedly connected to the upper side of the reduction box 1, an output shaft 2 is arranged on the upper side of the reduction box 1: a reduction unit 4 is arranged on the upper side of the motor 3, wherein the output part of the motor 3 is connected to the reduction box 1, so as to conveniently control the rotation of the output shaft 2 and decelerate the high-voltage switch.

[0026] The reduction unit 4 includes a rotating shaft 401, which is arranged on the upper side of the motor 3, a friction plate 402 is fixedly connected to the outer side of the rotating shaft 401, a protective cover 403 is arranged on the upper side of the motor 3, a spring 1 404 is fixedly connected to the top of the inner side of the protective cover 403, a lifting plate 406 is fixedly connected to the lower side of the spring 1 404, an electromagnet 405 is arranged between the lifting plate 406 and the protective cover 403, and a connection frame 407 is fixedly connected to the lower side of the left and right ends of the lifting plate 406, and a connection block 408 is arranged on the lower side of the connection frame 407. The lower side of the connecting block 408 is fixedly connected with a brake pad 409, the front side of the connecting frame 407 is fixedly connected with a front plate 410, the outer side of the front plate 410 is provided with a mounting block 411, the rear end of the mounting block 411 passes through the front plate 410 and the connecting block 408, the front side of the mounting block 411 is fixedly connected with a pull plate 412, and a spring 414 is fixedly connected between the pull plate 412 and the front plate 410, the upper end of the connecting block 408 passes through the upper side of the connecting frame 407, the connecting block 408 is slidably connected to the connecting frame 407, and the mounting block 411 is connected to the front plate 410. The front side of the pull plate 412 is fixedly connected with a pull handle 413, and the mounting block 411 is slidably connected to the connecting block 408. When the motor 3 is powered off, the electromagnet 405 is powered off, and under the action of the elastic force of the spring 1 404, the spring 1 404 drives the lifting plate 406 to descend, and the lifting plate 406 drives the connecting block 408 to descend, and the connecting block 408 drives the brake pad 409 to descend, so that the brake pad 409 contacts the friction pad 402, which is convenient for decelerating the rotating shaft 401 of the motor 3. When the brake pad 409 needs to be replaced, first replace the anti- The shield 403 is removed, and then the handle 413 is pulled, so that the handle 413 drives the pull plate 412 to move, and the pull plate 412 drives the installation block 411 to move, so that the installation block 411 is separated from the connecting block 408, and then pulled down to remove the brake pad 409 on the connecting block 408, so as to facilitate the replacement of the brake pad 409. During installation, pull the handle 413, and the connecting block 408 passes through the bottom of the connecting frame 407, and then let go. Under the action of the elastic force of the spring 2 414, the installation block 411 can quickly limit the connecting block 408.

[0027] Bolts are provided between the protective cover 403 and the motor 3, and the protective cover 403 can be easily disassembled by the bolts.

[0028] Working principle: When in use, when the motor 3 is powered off, the electromagnet 405 is powered off, and then under the action of the spring 404, the brake pad 409 is in contact with the friction pad 402, so as to decelerate the rotating shaft 401 of the motor 3. When the brake pad 409 needs to be replaced, the handle 413 is pulled to make the pull plate 412 drive the mounting block 411 to move, so as to separate the mounting block 411 from the connecting block 408, so as to quickly remove the brake pad 409 and facilitate replacement.

[0029] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A self-braking reduction motor for a high-voltage switch, characterized in that: It comprises a reduction box (1), the upper side of which is fixedly connected to a motor (3), the upper side of which is provided with an output shaft (2); and the upper side of which is provided with a reduction unit (4); The reduction unit (4) comprises a rotating shaft (401), wherein the rotating shaft (401) is arranged on the upper side of the motor (3), a friction plate (402) is fixedly connected to the outer side of the rotating shaft (401), a protective cover (403) is arranged on the upper side of the motor (3), a spring 1 (404) is fixedly connected to the top of the inner side of the protective cover (403), a lifting plate (406) is fixedly connected to the lower side of the spring 1 (404), an electromagnet (405) is arranged between the lifting plate (406) and the protective cover (403), and the lower sides of the left and right ends of the lifting plate (406) are fixedly connected to the lower sides of the connecting rods (406). A connecting frame (407), a connecting block (408) is provided on the lower side of the connecting frame (407), a brake pad (409) is fixedly connected to the lower side of the connecting block (408), a front plate (410) is fixedly connected to the front side of the connecting frame (407), a mounting block (411) is provided on the outer side of the front plate (410), a rear end of the mounting block (411) passes through the front plate (410) and the connecting block (408), a pull plate (412) is fixedly connected to the front side of the mounting block (411), and a spring 2 (414) is fixedly connected between the pull plate (412) and the front plate (410).

2. A self-braking reduction motor for a high-voltage switch according to claim 1, characterized in that: The upper end of the connection block (408) passes through the upper side of the connection frame (407).

3. The self-braking reduction motor for high-voltage switch according to claim 1 is characterized in that: The connection block (408) is slidably connected to the connection frame (407), and the installation block (411) is slidably connected to the front plate (410).

4. The self-braking reduction motor for high-voltage switch according to claim 1 is characterized in that: A pull handle (413) is fixedly connected to the front side of the pull plate (412).

5. The self-braking reduction motor for high-voltage switch according to claim 1 is characterized in that: The mounting block (411) is slidably connected to the connecting block (408).

6. The self-braking reduction motor for high-voltage switch according to claim 1, characterized in that: Bolts are provided between the protective cover (403) and the motor (3).

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