Lightweight permanent magnet synchronous traction machine

Abstract

The utility model discloses a kind of lightweight permanent magnet synchronous traction machine, it is related to traction machine technical field, including traction machine shell, stator and rotor are equipped in the inside of traction machine shell, wherein stator is fixed in the inside of traction machine shell;The rotor of the rotor traverses stator inside, and the both ends of rotor are respectively connected with traction machine shell and outer end plate by bearing cooperation;The outer end plate is fixed by bolt with traction machine shell;The rotor one end cooperation is installed with traction wheel, and the other end is equipped with shaft brake mechanism;The utility model, when traction machine is power failure, the magnetic field of magnetic yoke disappears, armature is forced under the top of spring cone-shaped brake disc and cone-shaped friction disc friction, to realize the shaft brake of rotor;This stop mode is directly acted on shaft, relatively simple structure, the number of parts is less, fault point also correspondingly reduces, and reliability is higher;And the braking mode of shaft brake assembly makes braking process more stable, noise is smaller, it is favorable to create quiet living environment.

Description

Technical Field

[0001] This utility model specifically relates to the field of traction machine technology, and more specifically to a lightweight permanent magnet synchronous traction machine. Background Technology

[0002] Traction machines are the core power units of vertical and horizontal transportation equipment such as elevators and escalators. Their core function is to drive the car steps by driving steel wire ropes (elevators) or chains (escalators). Their design and performance directly determine the elevator's operating efficiency, safety, and stability, and they are widely used in residential, commercial buildings, industrial plants, and other scenarios.

[0003] Chinese Patent Application No. 201910353526.0 discloses an external rotor synchronous forced drive traction machine, including a motor, a reducer, a drum assembly, a brake, and a base assembly. The motor is fixed to the reducer, the brake is fixed to the other end of the reducer, and the drum assembly is fixed to the base assembly by bolts. The brake housing is fixed to the housing cover, and the brake is connected to one end of the motor shaft in the motor by a key. One end of the drum in the drum assembly is connected to the output shaft of the reducer by a spline. The reducer is a two-stage gear reduction, and the reducer completes the reduction action by two sets of gear pairs, and then transmits torque through the spline of the reducer output shaft.

[0004] The traction machine in the aforementioned patent uses a motor to drive a reducer, which in turn drives a drum assembly to drive the wire rope. This type of traction machine has a slow response speed, a complex structure, and is heavy; it is very inconvenient to install; and it is especially cumbersome to maintain later. Utility Model Content

[0005] The purpose of this invention is to provide a lightweight permanent magnet synchronous traction machine that directly drives the traction sheave via a rotor, resulting in a fast response speed during elevator ascent and descent, thus achieving synchronization. Furthermore, the direct axle brake method simplifies the braking structure, reduces the number of parts, and consequently decreases potential failure points, leading to higher reliability. The axle brake traction machine also ensures a smoother braking process with lower noise, contributing to a quieter living environment. This invention aims to solve the technical problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A lightweight permanent magnet synchronous traction machine, including

[0008] The traction machine housing has a stator and a rotor inside it, with the stator fixed inside the housing. The rotor passes through the stator and its two ends are connected to the traction machine housing and the outer end plate respectively by bearings.

[0009] The outer end plate is fixed to the traction machine housing by bolts; a traction sheave is installed at one end of the rotor, and a shaft brake mechanism is provided at the other end;

[0010] The shaft brake mechanism includes a magnetic yoke, with multiple countersunk holes evenly distributed in a ring on the side of the magnetic yoke facing the armature, and springs installed in the countersunk holes; the armature is rotatably connected to the internal gear ring through a slip ring; the conical brake disc is installed with the rotor through the internal gear ring and gears; the conical brake disc is frictionally connected to the conical friction disc.

[0011] As a further technical solution of this utility model, the traction machine housing is octagonal in shape, and multiple weight-reducing grooves are provided on the outer side of the traction machine housing, with reinforcing ribs reserved between every two weight-reducing grooves.

[0012] As a further technical solution of this utility model, the top of the traction machine housing is also threaded with a lifting ring, and a controller is provided on one side of the lifting ring.

[0013] As a further technical solution of this utility model, the magnetic yoke is fixed inside the axle brake inner shell by bolts; the axle brake inner shell and the traction machine outer shell are fixed by bolts.

[0014] The internal gear ring is integrally set inside the conical brake disc, and the internal gear ring is meshed with a gear, wherein the gear is interference-fitted and installed on the output shaft of the rotor.

[0015] As a further technical solution of this utility model, the conical brake disc has a concave conical surface; the conical friction disc has a convex conical surface; the taper of the conical surface of the conical brake disc is the same as the taper of the conical surface of the conical friction disc.

[0016] The conical friction disc is fixed to the axle brake housing, and the axis of the conical friction disc and the axis of the conical brake disc are on the same horizontal line; the axle brake housing and the axle brake inner housing are fixed by bolts.

[0017] As a further technical solution of this utility model, a protective cover is fitted onto the outer side of the traction sheave, and the protective cover is fixed to the outer shell of the traction machine by bolts.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. In this utility model, the rotor is directly connected to the traction sheave. During use, the traction sheave has a fast response speed, which can ensure the synchronous operation of the rotor and the traction sheave. Under normal circumstances, after the magnetic yoke is energized, it will generate magnetic attraction force. The magnetic yoke attracts the armature, and the armature drives the internal gear ring and the conical brake disc to slide inward along the gear. At this time, the conical brake disc and the conical friction disc separate, and the conical brake disc can still rotate with the rotor.

[0020] 2. In this utility model, when the traction machine loses power, the magnetic field of the yoke disappears, and the armature, under the action of the spring, forces the conical brake disc and the conical friction disc to rub against each other, thereby achieving shaft braking of the rotor. This braking method acts directly on the shaft, has a relatively simple structure, fewer parts, and fewer failure points, resulting in higher reliability. Moreover, the braking method of the shaft brake assembly makes the braking process smoother and the noise lower, which is conducive to creating a quiet living environment. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This utility model Figure 1 The main view.

[0023] Figure 3 This utility model Figure 2 AA sectional view.

[0024] Figure 4 This utility model Figure 1 Another perspective illustration.

[0025] Figure 5 This utility model Figure 4 A schematic diagram of the split structure.

[0026] Figure 6 This utility model Figure 5 Another perspective illustration.

[0027] Figure 7 This utility model Figure 6 A magnified view of a portion of the image.

[0028] In the diagram: 1-Traction machine housing, 2-Stator, 3-Rotor, 4-Outer end plate, 5-Traction wheel, 6-Protective cover, 7-Axle brake inner housing, 8-Magnetic yoke, 9-Spring, 10-Armature, 11-Gear, 12-Internal gear ring, 13-Conical brake disc, 14-Conical friction disc, 15-Axle brake housing, 16-Controller, 17-Lifting ring, 18-Weight reduction groove, 19-Reinforcing rib. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-7 In this embodiment of the present invention, a lightweight permanent magnet synchronous traction machine includes a traction machine housing 1, a stator 2 and a rotor 3 are provided inside the traction machine housing 1, wherein the stator 2 is fixed inside the traction machine housing 1; the rotor 3 passes through the inside of the stator 2, and the two ends of the rotor 3 are respectively connected to the traction machine housing 1 and the outer end plate 4 through bearings.

[0031] The outer end plate 4 is fixed to the traction machine housing 1 by bolts; the rotor 3 is fitted with a traction wheel 5 at one end and a shaft brake mechanism at the other end; the traction machine housing 1 is octagonal in shape and has multiple weight-reducing grooves 18 on the outside of the traction machine housing 1, with reinforcing ribs 19 reserved between every two weight-reducing grooves 18.

[0032] By adopting the above technical solution, the weight reduction groove 18 reduces the overall weight of the traction machine housing 1, and the reserved reinforcing rib 19 ensures the load-bearing strength of the traction machine housing 1 (the load-bearing strength is the maximum load limit and service life determined according to the traction machine model; and the rated car load).

[0033] The rotor 3 is directly connected to the traction sheave 5. During use, the traction sheave 5 has a fast response speed, which can ensure the synchronous operation of the rotor 3 and the traction sheave 5.

[0034] More specifically, the axle brake mechanism includes a magnetic yoke 8, with multiple countersunk holes evenly distributed in a ring on the side of the magnetic yoke 8 facing the armature 10, and springs 9 installed in the countersunk holes; the armature 10 is rotatably connected to the internal gear ring 12 via a slip ring; the conical brake disc 13 is installed with the rotor 3 through the internal gear ring 12 and gears 11; the conical brake disc 13 is frictionally connected to the conical friction disc 14. The magnetic yoke 8 is fixed inside the axle brake inner housing 7 by bolts; the axle brake inner housing 7 is fixed to the traction machine outer housing 1 by bolts.

[0035] The internal gear ring 12 is integrally disposed inside the conical brake disc 13. The internal gear ring 12 is meshed with the gear 11, wherein the gear 11 is interference-fitted onto the output shaft of the rotor 3.

[0036] By adopting the above technical solution, under normal circumstances, the magnetic yoke 8 will generate magnetic attraction after being energized. The magnetic yoke 8 will attract the armature 10, and the armature 10 will drive the internal gear ring 12 and the conical brake disc 13 to slide inward along the gear 11. At this time, the conical brake disc 13 and the conical friction disc 14 will separate, and the conical brake disc 13 can still rotate with the rotor 3.

[0037] When the traction machine loses power, the magnetic field of the yoke 8 disappears, and the armature 10, under the action of the spring 9, forces the conical brake disc 13 and the conical friction disc 14 to rub against each other, thereby achieving shaft braking of the rotor 3. This braking method acts directly on the shaft, has a relatively simple structure, fewer parts, and fewer failure points, resulting in higher reliability. Moreover, the braking method of the shaft brake assembly makes the braking process smoother and the noise lower, which is conducive to creating a quiet living environment.

[0038] In this embodiment, the top of the traction machine housing 1 is also threadedly connected to a lifting ring 17, and a controller 16 is provided on one side of the lifting ring 17.

[0039] In this embodiment, the conical brake disc 13 has a concave conical surface; the conical friction disc 14 has a convex conical surface; the taper of the conical surface of the conical brake disc 13 and the taper of the conical surface of the conical friction disc 14 are the same.

[0040] The conical friction disc 14 is fixed to the axle brake housing 15, and the axis of the conical friction disc 14 and the axis of the conical brake disc 13 are on the same horizontal line; the axle brake housing 15 and the axle brake inner housing 7 are fixed by bolts.

[0041] By adopting the above technical solution, it is possible to ensure that when the conical brake disc 13 and the conical friction disc 14 come into contact, the convex conical surface of the conical friction disc 14 and the concave conical surface of the conical brake disc 13 can fit together better, thereby ensuring the smoothness and stability of the shaft brake and avoiding the occurrence of brake deviation or radial force on the rotor.

[0042] In this embodiment, a protective cover 6 is fitted onto the outer side of the traction wheel 5, and the protective cover 6 is fixed to the outer casing 1 of the traction machine by bolts.

[0043] The working principle of this utility model is as follows: the rotor 3 is directly connected to the traction wheel 5. When in use, the traction wheel 5 has a fast response speed, which can ensure the synchronous operation of the rotor 3 and the traction wheel 5. Under normal circumstances, after the magnetic yoke 8 is energized, it will generate magnetic attraction force. The magnetic yoke 8 attracts the armature 10. The armature 10 drives the internal gear ring 12 and the conical brake disc 13 to slide inward along the gear 11. At this time, the conical brake disc 13 and the conical friction disc 14 separate. The conical brake disc 13 can still rotate with the rotor 3.

[0044] When the traction machine loses power, the magnetic field of the yoke 8 disappears, and the armature 10, under the action of the spring 9, forces the conical brake disc 13 and the conical friction disc 14 to rub against each other, thereby achieving shaft braking of the rotor 3. This braking method acts directly on the shaft, has a relatively simple structure, fewer parts, and fewer failure points, resulting in higher reliability. Moreover, the braking method of the shaft brake assembly makes the braking process smoother and the noise lower, which is conducive to creating a quiet living environment.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lightweight permanent magnet synchronous traction machine, characterized by: include The traction machine housing (1) has a stator (2) and a rotor (3) inside it. The stator (2) is fixed inside the traction machine housing (1). The rotor (3) passes through the stator (2) and the two ends of the rotor (3) are connected to the traction machine housing (1) and the outer end plate (4) respectively by bearings. The outer end plate (4) is fixed to the traction machine housing (1) by bolts; the rotor (3) is fitted with a traction wheel (5) at one end and a shaft brake mechanism at the other end; The axle brake mechanism includes a magnetic yoke (8), with multiple countersunk holes evenly distributed in a ring on the side of the magnetic yoke (8) facing the armature (10), and a spring (9) is provided in the countersunk hole; the armature (10) is rotatably connected to the internal gear ring (12) through a slip ring; the conical brake disc (13) is installed in cooperation with the rotor (3) through the internal gear ring (12) and the gear (11); the conical brake disc (13) is frictionally connected to the conical friction disc (14).

2. The light-weight permanent magnet synchronous traction machine according to claim 1, characterized in that: The traction machine housing (1) is octagonal in shape, and multiple weight-reducing grooves (18) are provided on the outside of the traction machine housing (1), with reinforcing ribs (19) reserved between each two weight-reducing grooves (18).

3. The light-weight permanent magnet synchronous traction machine according to claim 2, characterized in that: The top of the traction machine housing (1) is also threaded with a lifting ring (17), and a controller (16) is provided on one side of the lifting ring (17).

4. The light-weight permanent magnet synchronous traction machine according to claim 1, characterized in that: The magnetic yoke (8) is fixed inside the axle brake inner shell (7) by bolts; the axle brake inner shell (7) is fixed to the traction machine outer shell (1) by bolts; The internal gear ring (12) is integrally set inside the conical brake disc (13). The internal gear ring (12) is meshed with the gear (11), wherein the gear (11) is interference-fitted on the output shaft of the rotor (3).

5. The light-weight permanent magnet synchronous traction machine according to claim 4, characterized in that: The conical brake disc (13) has a concave conical surface; the conical friction disc (14) has a convex conical surface; the taper of the conical surface of the conical brake disc (13) is the same as the taper of the conical surface of the conical friction disc (14); The conical friction disc (14) is fixed to the axle brake housing (15), and the axis of the conical friction disc (14) and the axis of the conical brake disc (13) are on the same horizontal line; the axle brake housing (15) and the axle brake inner housing (7) are fixed by bolts.

6. The light-weight permanent magnet synchronous traction machine according to claim 5, characterized in that: The outer side of the traction wheel (5) is fitted with a protective cover (6), which is then fixed to the outer casing (1) of the traction machine by bolts.

Images