Permanent magnet synchronous motor direct drive brake control device for escalator

Abstract

The utility model relates to the technical field of permanent magnet synchronous motors, in particular to a permanent magnet synchronous motor direct-drive brake control device for an escalator, which comprises a shell, a motor body is arranged in the shell, the power output end of the motor body is connected with a brake shaft, and a circulation mechanism is arranged on one side of the shell. The circulation mechanism comprises fan blades, the fan blades are fixed to the side, close to the motor body, of the outer wall of the brake shaft, and a connecting shell is fixed to one side of the outer wall of the shell through bolts. The fan blades are driven by the brake shaft to rotate in the shell, so that air circulation is accelerated, heat is quickly diffused, the heat dissipation effect on the motor body is achieved, the guide mark drives the rotating shaft under the blowing of wind power, the cleaning brush is attached to the filter screen arranged in the circulation groove to rotate under the supporting of the supporting rod, and the cleaning effect is improved. Adsorbed dust, impurities and the like are scraped, and the situation that blockage affects air circulation, heat accumulation is caused, and the heat dissipation effect is poor is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of permanent magnet synchronous motors, in particular to a permanent magnet synchronous motor direct drive brake control device for an escalator. Background Art

[0002] An escalator, also known as an automatic escalator, or an automatic pedestrian elevator, handrail, or escalator, is a type of escalator with circular running steps. It is a fixed electric drive device used to transport passengers upward or downward. When the escalator is in operation, it requires a corresponding braking device to provide power. The use of a permanent magnet synchronous motor is indispensable in the braking device.

[0003] The patent specification with announcement number CN212151288U discloses a permanent magnet synchronous motor directly driven brake control device for an escalator, including a rotating structure formed by a groove frame and a rotating column, which effectively encapsulates a closed frame between the heat dissipation frame and the groove frame. When heat dissipation is required between the heat dissipation frame and the groove frame, the user can move the closed frame to open the gap between the heat dissipation frame and the groove frame, so that the external heat dissipation is sufficiently smooth, which is conducive to extending the service life of the permanent magnet synchronous motor directly driven brake control device.

[0004] However, in the implementation of relevant technologies, it was found that the permanent magnet synchronous motor directly driven brake control device for escalators of the above-mentioned design has the following problems: in the prior art, air circulation is used to dissipate heat through heat dissipation frames and groove frames, but in actual use, hot air will accumulate and is difficult to disperse and diffuse quickly, resulting in a large amount of heat in the shell and poor heat dissipation effect. In view of this, a permanent magnet synchronous motor directly driven brake control device for escalators is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a permanent magnet synchronous motor direct drive brake control device for an escalator.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a permanent magnet synchronous motor direct drive brake control device for an escalator, comprising a housing, a motor body is arranged inside the housing, and a brake shaft is connected to the power output end of the motor body, and a circulation mechanism is arranged on one side of the housing;

[0007] The circulation mechanism includes fan blades, which are fixed to a side of the outer wall of the brake shaft close to the motor body. A connecting shell is fixed to one side of the outer wall of the shell by bolts, and a circulation groove is opened on the outer wall of the connecting shell. A support rod is embedded in the circulation groove, and a rotating shaft is rotatably connected to the inside of the support rod. A guide mark is installed at one end of the rotating shaft that penetrates the shell, and a cleaning brush is fixed at the end of the rotating shaft away from the guide mark. When the motor body is working, the brake shaft is driven to rotate, thereby driving the fan blades to rotate, thereby improving the air circulation inside the shell and achieving a heat dissipation effect.

[0008] As a further description of the above technical solution: the guide mark forms a rotating structure through the rotating shaft and the support rod, and the support rod and the cleaning brush are tightly fitted. The circulating wind blows the guide mark, and the guide mark is driven by the force to drive the support rod to rotate, thereby driving the cleaning brush to clean the filter of the circulation slot to avoid blockage that affects air circulation.

[0009] As a further description of the above technical solution: limiting blocks are arranged at the four corners of the motor body inside the shell, and bonding plates are fixed between two limiting blocks on both sides of the outer wall of the motor body. The motor body is supported and limited by the limiting blocks to avoid air circulation caused by fitting with the shell, and the stability of the motor body is improved by limiting through the bonding plates.

[0010] As a further description of the above technical solution: a filter screen is embedded on the other side of the outer wall of the shell, and a mounting shell is provided at one end of the shell where the filter screen is installed, and a filter plate is embedded on the outer wall of the mounting shell, which can allow external air to be introduced when the fan blades rotate while filtering to prevent the entry of dust and impurities. At the same time, the shell is provided with a filter plate through a threaded mounting shell, which has double-layer filtration to improve the filtering effect.

[0011] As a further description of the above technical solution: a cleaning mechanism is provided on one side of the fan blade, and the cleaning mechanism includes a limiting hole. The limiting hole is opened on one side of the filter screen on the outer wall of the shell, and the internal rotation of the limiting hole is connected with a ring, and the inside of the ring is embedded with a roller. When the brake shaft rotates, the ring is driven to rotate, so that the roller fits in the limiting hole and rolls, thereby improving the smoothness of rotation while limiting.

[0012] As a further description of the above technical solution: the cleaning mechanism also includes a sleeve, which is sleeved on one end of the brake shaft passing through the mounting shell, and a connecting plate is fixed to the outer wall of the sleeve. The sleeve is reversely threadedly connected to the brake shaft for easy disassembly and maintenance, while preventing the sleeve from detaching due to inertia when the brake shaft rotates.

[0013] As a further description of the above technical solution: a rotating structure is formed between the connecting plate and the filter plate, and the filter plate is tightly fitted with the connecting plate. The connecting plate fixed by the sleeve is provided with a brush on the outer wall facing the filter plate, which can scrape and clean the adsorbed dust and impurities to avoid blockage affecting air circulation.

[0014] The utility model has the following beneficial effects:

[0015] The utility model designs a permanent magnet synchronous motor direct-drive brake control device for an escalator. Driven by a brake shaft, the fan blades rotate inside a shell, thereby accelerating air circulation, allowing heat to diffuse quickly, and having a heat dissipation effect on the motor body. The guide mark drives the rotating shaft under the blowing of wind. Supported by a support rod, a cleaning brush rotates in contact with a filter screen provided in a flow slot to scrape off adsorbed dust and impurities, thereby avoiding blockage that affects air circulation and causes heat accumulation, resulting in a poor heat dissipation effect.

[0016] The utility model designs a permanent magnet synchronous motor direct-drive brake control device for an escalator. The brake shaft is located in a limiting hole opened in a shell, and a fixed collar is rotated via a roller. While the brake shaft is kept rotating stably, the smoothness of the rotation is improved by the rolling of the roller. The brake shaft drives the sleeve to rotate, and the connecting plate drives the brush to rotate in contact with the filter plate, thereby preventing the filter plate from absorbing dust and impurities and causing blockage that affects the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the housing of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the connection shell of the utility model;

[0020] Figure 4 It is a schematic diagram of the installation structure of the sleeve ring of the utility model.

[0021] Legend:

[0022] 1. Shell; 2. Motor body; 3. Brake shaft; 4. Circulation mechanism; 401. Fan blade; 402. Connecting shell; 403. Circulation slot; 404. Support rod; 405. Rotating shaft; 406. Guide mark; 407. Cleaning brush; 5. Limit block; 6. Fitting plate; 7. Filter net; 8. Mounting shell; 9. Filter plate; 10. Cleaning mechanism; 1001. Limit hole; 1002. Ring; 1003. Roller; 1004. Sleeve; 1005. Connecting plate. DETAILED DESCRIPTION

[0023] Reference Figure 1-4 The utility model provides a permanent magnet synchronous motor direct drive brake control device for an escalator: comprising a housing 1, a motor body 2 is arranged inside the housing 1, a brake shaft 3 is connected to the power output end of the motor body 2, and a circulation mechanism 4 is arranged on one side of the housing 1;

[0024] The circulation mechanism 4 includes a fan blade 401, which is fixed on the side of the outer wall of the brake shaft 3 close to the motor body 2. A connecting shell 402 is fixed to one side of the outer wall of the shell 1 by bolts. A circulation groove 403 is opened on the outer wall of the connecting shell 402. A support rod 404 is embedded in the circulation groove 403. The support rod 404 is internally connected to a rotating shaft 405 for rotation. A guide mark 406 is installed at one end of the rotating shaft 405 that penetrates into the shell 1. A cleaning brush 407 is fixed at the end of the rotating shaft 405 away from the guide mark 406. When the motor body 2 is working, the brake shaft 3 is driven to rotate, thereby driving the fan blade 401 to rotate, thereby improving the air circulation inside the shell 1 and achieving a heat dissipation effect.

[0025] As a further implementation scheme of the above technical scheme: the guide mark 406 forms a rotating structure through the rotating shaft 405 and the support rod 404, the support rod 404 and the cleaning brush 407 are tightly fitted, and the guide mark 406 is blown by the circulating wind, so that the guide mark 406 is driven by the force to drive the support rod 404 to rotate, thereby driving the cleaning brush 407 to clean the filter of the circulation slot 403 to avoid blockage that affects air circulation.

[0026] As a further implementation scheme of the above technical scheme: limiting blocks 5 are arranged at the four corners of the motor body 2 inside the shell 1, and bonding plates 6 are fixed between the two limiting blocks 5 on both sides of the outer wall of the motor body 2. The motor body 2 is supported and limited by the limiting blocks 5 to avoid the air being unable to circulate due to the fitting with the shell 1, and the stability of the motor body 2 is improved by limiting it through the bonding plates 6.

[0027] In specific implementation, when the motor body 2 is working, the power end drives the brake shaft 3 to rotate, and the fan blade 401 rotates inside the shell 1 following the brake shaft 3, and cooperates with the limit block 5 to support and limit the motor body 2, so that air can circulate inside the shell 1 to achieve heat dissipation effect. The guide mark 406 is blown by the wind to drive the rotating shaft 405 to rotate under the support of the support rod 404. The PVC block fixing the rotating shaft 405 is engaged with the cleaning brush 407 on both sides of the support rod 404 to avoid deviation during rotation, and the cleaning brush 407 can be fitted on the filter screen of the circulation slot 403 to rotate to scrape off the adsorbed dust, etc., to avoid blockage affecting air circulation. The shell 1 and the connecting shell 402 are installed by bolts for easy disassembly and maintenance.

[0028] As a further implementation scheme of the above technical scheme: a filter screen 7 is embedded on the other side of the outer wall of the shell 1, and a mounting shell 8 is provided at one end of the shell 1 on which the filter screen 7 is installed, and a filter plate 9 is embedded on the outer wall of the mounting shell 8. The filter screen 7 can allow the fan blades 401 to rotate while introducing external air, and filter to prevent the entry of dust and impurities. At the same time, the shell 1 is provided with a filter plate 9 through a threaded mounting shell 8, which has double-layer filtration to improve the filtering effect.

[0029] As a further implementation scheme of the above technical scheme: a cleaning mechanism 10 is provided on one side of the fan blade 401, and the cleaning mechanism 10 includes a limiting hole 1001. The limiting hole 1001 is opened on one side of the filter screen 7 on the outer wall of the shell 1. The internal rotation of the limiting hole 1001 is connected with a ring 1002, and the inside of the ring 1002 is embedded with a roller 1003. When the brake shaft 3 rotates, the ring 1002 is driven to rotate, so that the roller 1003 is fitted in the limiting hole 1001 to roll, thereby improving the smoothness of rotation while limiting.

[0030] As a further implementation scheme of the above technical scheme: the cleaning mechanism 10 also includes a sleeve 1004, which is sleeved on one end of the brake shaft 3 that passes through the mounting shell 8, and a connecting plate 1005 is fixed to the outer wall of the sleeve 1004. The sleeve 1004 is reversely threadedly connected to the brake shaft 3 for easy disassembly and maintenance, while preventing the sleeve 1004 from detaching due to inertia when the brake shaft 3 rotates.

[0031] As a further implementation scheme of the above technical scheme: a rotating structure is formed between the connecting plate 1005 and the filter plate 9, the filter plate 9 and the connecting plate 1005 are tightly fitted, and the connecting plate 1005 fixed by the sleeve 1004 is provided with a brush on the outer wall facing the filter plate 9, which can scrape and clean the adsorbed dust and impurities to avoid blockage affecting air circulation.

[0032] During specific implementation, the rotation of the ring 1002 and the roller 1003 along the limiting hole 1001 improves the stability and smoothness of the rotation of the brake shaft 3. At the same time, the rotation of the brake shaft 3 drives the sleeve 1004 to rotate, so that the brush installed on the connecting plate 1005 rotates in contact with the filter plate 9 to scrape the filter plate 9 to avoid blockage caused by the adsorption of dust and impurities.

[0033] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A permanent magnet synchronous motor direct drive brake control device for an escalator, characterized in that: It comprises a housing (1), a motor body (2) is arranged inside the housing (1), a brake shaft (3) is connected to the power output end of the motor body (2), and a circulation mechanism (4) is arranged on one side of the housing (1); The circulation mechanism (4) includes a fan blade (401), and the fan blade (401) is fixed to the outer wall of the brake shaft (3) on one side close to the motor body (2). A connecting shell (402) is fixed to one side of the outer wall of the shell (1) by bolts, and the outer wall of the connecting shell (402) is provided with a circulation groove (403). A support rod (404) is embedded in the circulation groove (403), and a rotating shaft (405) is rotatably connected to the inside of the support rod (404). A guide mark (406) is installed at one end of the rotating shaft (405) that penetrates into the shell (1), and a cleaning brush (407) is fixed to the end of the rotating shaft (405) away from the guide mark (406).

2. The permanent magnet synchronous motor direct drive brake control device for escalator according to claim 1, characterized in that: The guide mark (406) forms a rotating structure through the rotating shaft (405) and the support rod (404), and the support rod (404) and the cleaning brush (407) are tightly fitted.

3. The permanent magnet synchronous motor direct drive brake control device for escalator according to claim 1, characterized in that: Limiting blocks (5) are arranged at the four corners of the motor body (2) inside the housing (1), and bonding plates (6) are fixed between the two limiting blocks (5) on both sides of the outer wall of the motor body (2).

4. The permanent magnet synchronous motor direct drive brake control device for escalator according to claim 1, characterized in that: A filter screen (7) is embedded on the other side of the outer wall of the shell (1), and a mounting shell (8) is sleeved on one end of the shell (1) where the filter screen (7) is mounted, and a filter plate (9) is embedded on the outer wall of the mounting shell (8).

5. The permanent magnet synchronous motor direct drive brake control device for escalator according to claim 1, characterized in that: A cleaning mechanism (10) is provided on one side of the fan blade (401), and the cleaning mechanism (10) comprises a limiting hole (1001), the limiting hole (1001) is opened on one side of the filter screen (7) on the outer wall of the shell (1), and a ring (1002) is rotatably connected inside the limiting hole (1001), and a roller (1003) is embedded inside the ring (1002).

6. The permanent magnet synchronous motor direct drive brake control device for escalator according to claim 5, characterized in that: The cleaning mechanism (10) further comprises a sleeve (1004), wherein the sleeve (1004) is sleeved on one end of the brake shaft (3) passing through the mounting shell (8), and a connecting plate (1005) is fixed to the outer wall of the sleeve (1004).

7. The permanent magnet synchronous motor direct drive brake control device for escalator according to claim 6, characterized in that: A rotating structure is formed between the connecting plate (1005) and the filter plate (9), and the filter plate (9) and the connecting plate (1005) are tightly fitted.

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