Permanent magnet synchronous traction machine suitable for elevator

Abstract

The permanent magnet synchronous traction machine comprises a machine frame, a machine base is arranged on the machine frame, a rotating shaft is arranged on the machine base, a traction wheel and a brake wheel are arranged on the rotating shaft, the traction wheel and the brake wheel are located on the two opposite sides of the machine base respectively, and a brake is arranged on the side, away from the traction wheel, of the brake wheel. A protective cover is arranged on the machine base and located above the traction wheel and the brake wheel, and a sound absorption layer is arranged on the inner side of the protective cover. Oil separating rings are arranged on the inner rim and the outer rim of the brake wheel, and the diameter of the oil separating rings is larger than that of the brake wheel. The traction machine has the advantages of saving side face installation space and improving work reliability of the traction machine.

Description

Technical Field

[0001] This utility model relates to a traction machine, and more particularly to a permanent magnet synchronous traction machine suitable for elevators. Background Technology

[0002] A permanent magnet synchronous traction machine is a traction machine based on permanent magnet synchronous motor technology. It is usually used as the power drive component of an elevator. It replaces the traditional gear transmission system with a direct drive method. It uses the output torque of the traction sheave at the end of the traction machine shaft to provide power output to the elevator car and other components. It uses a brake wheel and related braking components to form a brake to provide braking torque output to the elevator car and other components when the elevator needs to stop. It has the characteristics of high efficiency and energy saving.

[0003] Existing permanent magnet synchronous traction machines have the brake installed on the side of the machine base, close to the wall. This results in a relatively wide structure for the traction machine, which is prone to interference with the wall, making maintenance difficult and hindering the layout of elevator components. Moreover, the traction sheave and brake sheave are exposed to the outside, making them susceptible to environmental contamination and impacts, affecting the working performance of the traction machine. In the event of oil leaks from the bearing housing, traction ropes, or other components, the oil can seep onto the braking surface of the brake sheave, reducing the friction coefficient of the brake sheave surface, leading to insufficient braking torque, reduced braking performance, and ultimately affecting the reliability of the traction machine. Utility Model Content

[0004] The purpose of this invention is to provide a permanent magnet synchronous traction machine suitable for elevators. This invention features space-saving side installation and improved reliability of the traction machine.

[0005] The technical solution of this utility model is as follows: A permanent magnet synchronous traction machine suitable for elevators includes a frame, a base on the frame, a rotating shaft on the base, a traction sheave and a brake sheave on the rotating shaft, the traction sheave and the brake sheave being located on opposite sides of the base, and a brake being provided on the side of the brake sheave away from the traction sheave; a protective cover is provided on the base above the traction sheave and the brake sheave, and a sound-absorbing layer is provided on the inner side of the protective cover; an oil separator ring is provided on both the inner and outer rims of the brake sheave, and the diameter of the oil separator ring is larger than the diameter of the brake sheave.

[0006] In the aforementioned permanent magnet synchronous traction machine for elevators, the base is provided with a rope-blocking assembly. The rope-blocking assembly includes a transverse support located above the traction sheave. Mounting brackets are provided at both ends of the transverse support. A limiting plate located outside the traction sheave is provided at the end of the mounting bracket. The limiting plate is arc-shaped on the side facing the traction sheave and matches the outer rim of the traction sheave.

[0007] In the aforementioned permanent magnet synchronous traction machine suitable for elevators, the inner side of the limiting plate is provided with several arc-shaped grooves, and the arc-shaped grooves correspond one-to-one with the rope grooves of the traction sheave.

[0008] In the aforementioned permanent magnet synchronous traction machine suitable for elevators, the transverse support is provided with an elongated hole, and the elongated hole is provided with a fixing bolt for connecting to the machine base; the mounting bracket is provided with a mounting bolt for connecting to the elongated hole.

[0009] In the aforementioned permanent magnet synchronous traction machine suitable for elevators, the frame includes a first base plate and a second base plate, and a plurality of shock-absorbing pads are provided between the first base plate and the second base plate. The perimeter of the shock-absorbing pads is an arc angle, and the side of the shock-absorbing pads is provided with a buffer groove.

[0010] In the aforementioned permanent magnet synchronous traction machine suitable for elevators, a number of adjusting bolts are provided between the first base plate and the second base plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention mounts both the traction sheave and the brake wheel on a rotating shaft, which enables the traction sheave and brake wheel to rotate synchronously, achieving stable torque transmission. The traction sheave and brake wheel are located on opposite sides of the machine base, with the brake located on the side of the brake wheel away from the traction sheave. This saves side installation space for the traction machine, avoids interference with the shaft wall, and facilitates the arrangement and maintenance of elevator components.

[0013] The protective cover is designed to shield against pollutants from the external environment, reducing contamination and impacts on the rope grooves of the traction sheave and the braking surface of the brake wheel, thus improving the operational reliability of the traction sheave and brake wheel. Furthermore, the sound-absorbing layer can more comprehensively absorb the noise generated during the operation of the traction machine, improving the quietness of the elevator operation.

[0014] By installing oil separator rings on the inner and outer rims of the brake wheel, oil contamination from the bearing housing, traction rope, and other traction machine components can be effectively prevented from flowing to the brake wheel and contaminating its braking surface, thus ensuring reliable braking performance.

[0015] Therefore, this utility model has the advantages of saving side space for elevator installation and improving the reliability of traction machine operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the installation of the traction machine in this utility model.

[0017] Figure 2 This is a schematic diagram of the traction machine.

[0018] Figure 3 This is a structural diagram of the rope-blocking assembly.

[0019] The markings in the attached diagram are as follows: 1. Frame; 11. First base plate; 12. Second base plate; 13. Vibration damping pad; 14. Buffer groove; 15. Adjusting bolt; 2. Base; 3. Shaft; 31. Traction sheave; 32. Brake wheel; 33. Brake; 34. Protective cover; 35. Sound-absorbing layer; 4. Oil separator ring; 51. Transverse support; 52. Mounting bracket; 53. Limiting plate; 54. Long hole; 55. Fixing bolt; 56. Mounting bolt. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[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, a hinged connection, a rotating 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, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Example:

[0023] like Figures 1-3 As shown, a permanent magnet synchronous traction machine suitable for elevators includes a frame 1, a base 2 on the frame 1, a rotating shaft 3 on the base 2, a traction sheave 31 and a brake sheave 32 on the rotating shaft 3, the traction sheave 31 and the brake sheave 32 are located on opposite sides of the base 2, and a brake 33 is provided on the side of the brake sheave 32 away from the traction sheave 31; a protective cover 34 is provided on the base 2 above the traction sheave 31 and the brake sheave 32, and a sound-absorbing layer 35 is provided on the inner side of the protective cover 34; an oil separator ring 4 is provided on both the inner and outer rims of the brake sheave 32, and the diameter of the oil separator ring 4 is larger than the diameter of the brake sheave 32.

[0024] This invention mounts both the traction sheave 31 and the brake wheel 32 on the rotating shaft 3, enabling them to rotate synchronously and achieve stable torque transmission. The traction sheave 31 and brake wheel 32 are located on opposite sides of the base 2, with the brake 33 located on the side of the brake wheel 32 furthest from the traction sheave 31. This saves side installation space for the traction machine, avoids interference with the shaft walls, and facilitates the layout and maintenance of elevator components. The protective cover 34 shields against pollutants from the external environment, reducing contamination and impact on the rope groove of the traction sheave 31 and the braking surface of the brake wheel 32, thus improving the operational reliability of the traction sheave 31 and brake wheel 32. Furthermore, the sound-absorbing layer 35 more comprehensively absorbs the noise generated during the operation of the traction machine, improving the quietness of the elevator operation. By setting oil-separating rings 4 on the inner and outer rims of the brake wheel 32, oil contaminants from the bearing housing, traction rope, and other traction machine components can be effectively prevented from flowing to the brake wheel 32 and contaminating its braking surface, thereby ensuring that the brake 33 has reliable braking performance.

[0025] The base 2 is equipped with a rope-blocking assembly, which includes a transverse support 51 located above the traction sheave 31. Mounting brackets 52 are located at both ends of the transverse support 51. A limiting plate 53 is located at the end of each mounting bracket 52 on the outer side of the traction sheave 31. The limiting plate 53 is arc-shaped on the side facing the traction sheave 31 and matches the outer rim of the traction sheave 31. The limiting plate 53 limits the traction rope on the traction sheave 31, effectively preventing the traction rope from derailing and ensuring the stability of the traction rope and elevator movement. Furthermore, the arc-shaped inner side of the limiting plate 53, matching the outer rim of the traction sheave 31, provides better coverage of the traction sheave 31 and a better limiting effect on the traction rope.

[0026] The inner side of the limiting plate 53 is provided with several arc-shaped grooves, which correspond one-to-one with the rope grooves of the traction wheel 31. By providing arc-shaped grooves corresponding to the rope grooves of the traction wheel 31 on the inner side of the limiting plate 53, the space between the arc-shaped grooves and the rope grooves forms a channel for the traction rope to move, which ensures that the traction rope moves on the path defined by the traction wheel 31.

[0027] The transverse support 51 is provided with an elongated hole 54, and a fixing bolt 55 for connecting to the base 2 is provided on the elongated hole 54; the mounting bracket 52 is provided with a mounting bolt 56 for connecting to the elongated hole 54. By connecting the mounting bracket 52 to the elongated hole 54 through the mounting bolt 56, the position of the mounting bracket 52 relative to the traction sheave 31 can be adjusted, thereby adjusting the gap between the limiting plate 53 and the outer rim of the traction sheave 31, thus adapting to the limiting of traction ropes of different diameters.

[0028] The frame 1 includes a first base plate 11 and a second base plate 12. A plurality of shock-absorbing pads 13 are provided between the first base plate 11 and the second base plate 12. The perimeter of the shock-absorbing pads 13 is a rounded corner, and the side of the shock-absorbing pads 13 is provided with a buffer groove 14.

[0029] The vibration damping pads 13 are designed to buffer the vibration generated by the traction machine, thereby improving stability. The buffer grooves 14 on the side of the damping pads 13 provide sufficient deformation buffer space for the damping pads 13 under pressure, and the rounded corners can also prevent stress concentration, thereby improving the mechanical stress resistance of the damping pads 13 and extending their service life.

[0030] A number of adjusting bolts 15 are provided between the first base plate 11 and the second base plate 12. By adjusting the adjusting bolts 15 at different positions, the levelness of the second base plate 12 and the machine base 2 can be adjusted, thereby improving the stability, reliability and safety of the traction machine.

[0031] The parts of this utility model not described in detail are existing technologies and therefore will not be specifically described here.

Claims

1. A permanent magnet synchronous traction machine suitable for an elevator, comprising a frame (1), a machine base (2) is arranged on the frame (1), a rotating shaft (3) is arranged on the machine base (2), characterized in that: The rotating shaft (3) is provided with a traction wheel (31) and a brake wheel (32), the traction wheel (31) and the brake wheel (32) are located on the opposite sides of the base (2) respectively, the brake wheel (32) is provided with a brake (33) on the side away from the traction wheel (31); The base (2) is provided with a protective cover (34) above the traction wheel (31) and the brake wheel (32), the inner side of the protective cover (34) is provided with a sound absorbing layer (35); The inner rim and the outer rim of the brake wheel (32) are both provided with an oil separation ring (4), the diameter of the oil separation ring (4) is greater than the diameter of the brake wheel (32).

2. A permanent magnet synchronous traction machine suitable for use in an elevator according to claim 1, characterized in that: The base (2) is provided with a rope blocking assembly, the rope blocking assembly includes a transverse support (51) above the traction wheel (31), the two ends of the transverse support (51) are respectively provided with a mounting bracket (52), the end of the mounting bracket (52) is provided with a limiting plate (53) outside the traction wheel (31), the side of the limiting plate (53) facing the traction wheel (31) is arc-shaped and matches the outer rim of the traction wheel (31).

3. A permanent magnet synchronous traction machine suitable for use in an elevator according to claim 2, characterized in that: The inner side of the limiting plate (53) is provided with a plurality of arc-shaped grooves, the arc-shaped grooves correspond one-to-one with the rope grooves of the traction wheel (31).

4. A permanent magnet synchronous traction machine suitable for use in an elevator according to claim 2, characterized in that: The transverse support (51) is provided with an elongated hole (54), the elongated hole (54) is provided with a fixing bolt (55) connected with the base (2); The mounting bracket (52) is provided with a mounting bolt (56) connected with the elongated hole (54).

5. A permanent magnet synchronous traction machine suitable for use in an elevator according to claim 1, characterized in that: The rack (1) includes a first bottom plate (11) and a second bottom plate (12), a plurality of shock pads (13) are arranged between the first bottom plate (11) and the second bottom plate (12), the peripheral angle of the shock pad (13) is a circular arc angle, and the side surface of the shock pad (13) is provided with a buffer groove (14).

6. A permanent magnet synchronous traction machine suitable for use in an elevator according to claim 5, characterized in that: A plurality of adjusting bolts (15) are arranged between the first bottom plate (11) and the second bottom plate (12).

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