CN218988524U

CN218988524U - Traction machine, braking structure thereof and elevator

Info

Publication number: CN218988524U
Application number: CN202223442928.4U
Authority: CN
Inventors: 詹奉明; 张建文; 郑美珠; 王建宏; 潘啟坤; 江曼
Original assignee: Hitachi Elevator Motor Guangzhou Co Ltd
Current assignee: Hitachi Elevator Motor Guangzhou Co Ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-05-09
Anticipated expiration: 2032-12-22

Abstract

The utility model relates to a traction machine, a braking structure thereof and an elevator. Meanwhile, the brake is locked on the support by the pressing component, so that the brake is kept stable on the support, the braking effect is improved, and the working noise of the brake is reduced. During maintenance, the hold-down member is removed from the brake or bracket and unlocked. At this time, the brake can be rotated so that at least part of the brake can be rotated out of the bracket for maintenance. Through the design, through the modularized design, maintenance personnel are free from completely disassembling the brake, maintenance operation steps are reduced, the installation is simple, the maintenance is convenient, and the maintenance efficiency of the brake is improved.

Description

Traction machine, braking structure thereof and elevator

Technical Field

The utility model relates to the technical field of traction equipment, in particular to a traction machine, a braking structure of the traction machine and an elevator.

Background

Most of elevators at present adopt permanent magnet synchronous traction machines as driving components, and brakes are used as braking components of the traction machines, so that safe stopping and decelerating stopping of the elevators can be ensured, and safety of passengers is ensured. With the wide application and the increasingly strong market competition of the elevators, the maintenance convenience, safety and reliability and low noise of the elevators are more important. In the elevator industry at present, the brake of most traction machines is inconvenient to install particularly when the brake is installed and maintained, and difficulty is brought to field production and maintenance.

Disclosure of Invention

Based on the above, it is necessary to provide a traction machine, a braking structure thereof, and an elevator, which have a simple structure, are convenient to install and maintain, and are beneficial to improving the maintenance efficiency of the brake.

A braking structure of a traction machine, comprising: a bracket; a brake mounted on the bracket by a stationary shaft, the stationary shaft having an axis; and the pressing part is detachably connected with the bracket and the brake, and when the pressing part is detached from the brake and/or the bracket, the brake rotates around the axis and at least partially rotates out of the bracket.

According to the braking structure of the traction machine, in the assembly process, the fixed shaft is used for installing the brake on the support, so that the installation structure of the brake is simplified, and the overall weight of the traction machine is reduced. Meanwhile, the brake is locked on the support by the pressing component, so that the brake is kept stable on the support, the braking effect is improved, and the working noise of the brake is reduced. During maintenance, the hold-down member is removed from the brake or bracket and unlocked. At this time, the brake can be rotated so that at least part of the brake can be rotated out of the bracket for maintenance. Through the design, through the modularized design, maintenance personnel are free from completely disassembling the brake, maintenance operation steps are reduced, the installation is simple, the maintenance is convenient, and the maintenance efficiency of the brake is improved.

In some embodiments, the bracket is provided with a first mounting hole, the brake is provided with a second mounting hole corresponding to the first mounting hole, and the fixing shaft penetrates through the first mounting hole and the second mounting hole.

In some embodiments, the bracket includes a main body and two mounting portions spaced apart from each other on the main body, where the two mounting portions are provided with the first mounting hole, and the second mounting hole is located between the two mounting portions.

In some of these embodiments, the edge of the support is provided with a mounting groove into which the brake fits, the brake being able to be rotated out of the mounting groove when the hold-down element is removed from the brake and/or the support.

In some embodiments, the number of the fixing shafts is at least two on the same brake, and all the fixing shafts are arranged at intervals along the circumferential direction of the brake.

In some embodiments, the hold-down member includes a hold-down member, a first fastener removably securing one end of the hold-down member to the bracket, and a second fastener removably securing the other end of the hold-down member to the brake.

In some embodiments, the support is provided with a first fixing hole, the fixing shaft is provided with a second fixing hole, the pressing piece is provided with a first matching hole corresponding to the first fixing hole and a second matching hole corresponding to the second fixing hole, the first fastening piece penetrates through the first matching hole and the first fixing hole, and the second fastening piece penetrates through the second matching hole and the second fixing hole.

In some embodiments, the number of the stoppers is at least two, and all the stoppers are arranged at intervals along the circumferential direction of the bracket.

In some of these embodiments, the stationary shaft is a pin.

A traction machine comprising a braking structure of any one of the above traction machines.

The traction machine adopts the braking structure of the traction machine, and in the assembly process, the brake is mounted on the bracket by the fixing shaft, so that the mounting structure of the brake is simplified, and the whole weight of the traction machine is reduced. Meanwhile, the brake is locked on the support by the pressing component, so that the brake is kept stable on the support, the braking effect is improved, and the working noise of the brake is reduced. During maintenance, the hold-down member is removed from the brake or bracket and unlocked. At this time, the brake can be rotated so that at least part of the brake can be rotated out of the bracket for maintenance. Through the design, through the modularized design, maintenance personnel are free from completely disassembling the brake, maintenance operation steps are reduced, the installation is simple, the maintenance is convenient, and the maintenance efficiency of the brake is improved.

An elevator comprising the hoisting machine described above.

According to the elevator, the brake structure of the traction machine is adopted, in the assembly process, the brake is mounted on the support by the aid of the fixing shaft, the mounting structure of the brake is simplified, and the overall weight of the traction machine is reduced. Meanwhile, the brake is locked on the support by the pressing component, so that the brake is kept stable on the support, the braking effect is improved, and the working noise of the brake is reduced. During maintenance, the hold-down member is removed from the brake or bracket and unlocked. At this time, the brake can be rotated so that at least part of the brake can be rotated out of the bracket for maintenance. Through the design, through the modularized design, maintenance personnel are free from completely disassembling the brake, maintenance operation steps are reduced, the installation is simple, the maintenance is convenient, and the maintenance efficiency of the brake is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a braking structure of a traction machine according to some embodiments of the present application;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1 at circle A;

fig. 3 is a partial cross-sectional view of a construction of a traction machine according to some embodiments of the present application;

fig. 4 is an enlarged schematic view of the structure at circle B in fig. 3.

100. A braking structure; 110. a brake; 111. a second mounting hole; 112. a braking portion; 120. a bracket; 121. a main body; 122. a mounting part; 123. a first mounting hole; 124. a mounting groove; 125. a first fixing hole; 130. a fixed shaft; 131. a second fixing hole; 132. an axis; 140. a pressing member; 141. a pressing member; 142. a first fastener; 143. a second fastener; 144. a first mating hole; 145. a second mating hole; 200. traction sheave; 210. a brake disc.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In some embodiments, referring to fig. 1 to 4, a braking structure 100 of a traction machine includes: a bracket 120, a stopper 110, and a pressing member 140. The brake 110 is mounted to the bracket 120 by a stationary shaft 130, the stationary shaft 130 having an axis 132. The pressing member 140 is detachably coupled to the bracket 120 and the stopper 110. When the hold-down member 140 is removed from the brake 110 and/or the bracket 120, the brake 110 rotates about the axis 132 and at least partially out of the bracket 120.

In the brake structure 100 of the traction machine, the brake 110 is mounted on the bracket 120 by the fixing shaft 130 during the assembly process, so that the mounting structure of the brake 110 is simplified, and the overall weight of the traction machine is reduced. Meanwhile, the brake 110 is locked on the bracket 120 by the pressing part 140, so that the brake 110 is ensured to be kept stable on the bracket 120, the braking effect is improved, and the working noise of the brake 110 is reduced. During maintenance, the hold-down member 140 is removed from the stopper 110 or the bracket 120, and the lock is released. At this point, maintenance may be performed by rotating the brake 110 such that it is at least partially rotated out of the bracket 120. Through the design, the maintenance personnel can avoid the whole disassembly of the brake 110, the maintenance operation steps are reduced, the installation is simple, the maintenance is convenient, and the maintenance efficiency of the brake 110 is improved.

The brake 110 is a friction brake 110 that generates a bidirectional electromagnetic thrust when being electrified, so that the brake mechanism is separated from the rotating part of the motor, the electromagnetic force disappears when the power is cut off, and the power-off braking is formed under the action of the pressure of an externally applied brake spring. The brake 110 includes two brake locations 112, and when assembled, the two brake locations 112 are snapped into respective sides of the brake disc 210 of the traction sheave 200. Since the brake 110 itself is not an object of improvement of the present application, its specific structure is not specifically described herein, and reference is made directly to the existing literature or to existing products, etc.

The use of the fixed shaft 130 to mount the brake 110 to the bracket 120 allows the brake 110 to be rotated about the axis 132 when unlocked, thereby rotating the brake 110 at least partially out of the bracket 120 during maintenance. Unlike the conventional fixing method, the whole brake 110 needs to be removed in the maintenance process, which brings great inconvenience to the site with a small operation space.

There are various ways of mounting the brake 110 on the bracket 120 using the fixed shaft 130, such as: with shaft-hole engagement, pin engagement, etc., it is of course important to note that the brake 110 is rotatable about the axis 132 during installation.

It should be noted that, the pressing member 140 refers to a member having a certain structural strength, for example: stainless steel plate, iron plate, aluminum alloy plate, etc. When the pressing member 140 is coupled to the bracket 120 and the stopper 110, the stopper 110 is restricted by the pressing member 140, and cannot rotate and move on the bracket 120, maintaining a locked state. When the hold-down member 140 is removed from the bracket 120 and/or the brake 110, the hold-down member 140 cannot form a limit between the bracket 120 and the brake 110, and the brake 110 is in a rotatable state.

By "detachably attached" it is meant that the hold-down member 140 retains its original attachment function after the attachment structure of the bracket 120 and the stopper 110 is removed, i.e., the attachment structure of the hold-down member 140 is not broken after the removal, such as: bolted connection, clamped connection, pin connection, etc.

Further, referring to fig. 4, a first mounting hole 123 is provided on the bracket 120. The brake 110 is provided with a second mounting hole 111 corresponding to the first mounting hole 123. The fixed shaft 130 is penetrated in the first and second mounting

holes

123 and 111. It can be seen that during assembly, the second mounting hole 111 of the brake 110 is aligned with the first mounting hole 123 of the bracket 120; the fixing shaft 130 is inserted into the first mounting hole 123 and the second mounting hole 111, respectively, to realize the pre-mounting of the brake 110 on the bracket 120.

In order to avoid that the fixed shaft 130 can slide out of the first mounting hole 123 along the axis 132, the fixed shaft may be fixed in the first mounting hole 123 by a pin joint or an interference fit. When the fixed shaft 130 is fixed in the first mounting hole 123 in a pin-joint manner, the fixed shaft 130 may be a pin structure.

In some embodiments, referring to fig. 1 and 4, the bracket 120 includes a main body 121 and two mounting portions 122 disposed on the main body 121 at intervals. The two mounting portions 122 are each provided with a first mounting hole 123, and the second mounting hole 111 is located between the two mounting portions 122. By such design, the installed brake 110 is erected between the two installation parts 122, so that the stress is balanced, and the brake 110 is favorable for realizing stable braking.

Alternatively, the connection between the mounting portion 122 and the main body 121 may be, but not limited to, bolting, welding, clamping, riveting, integrally molding, etc. Wherein, the integral molding mode can be injection molding, die casting, extrusion and other molding modes.

In some embodiments, referring to fig. 1, mounting slots 124 are provided on the edges of the bracket 120. The brake 110 fits into the mounting slot 124 and the brake 110 can be rotated out of the mounting slot 124 when the hold-down member 140 is removed from the brake 110 and/or the bracket 120. In this way, the mounting groove 124 is provided on the edge of the bracket 120, so that not only is the installation of the brake 110 more convenient and stable, but also the brake 110 is convenient to rotate out of the bracket 120 in the maintenance process, and the maintenance efficiency is further improved.

It should be noted that the size of the mounting groove 124 may be determined according to the brake 110, so that the brake 110 can be placed in the mounting groove 124. Meanwhile, the shape of the mounting groove 124 has various designs, such as: may be circular, square, pentagonal, elliptical, etc.

In some embodiments, referring to fig. 1, on the same brake 110, there are at least two fixed shafts 130, and all the fixed shafts 130 are arranged at intervals along the circumferential direction of the brake 110. In this way, a plurality of fixing points are added on the same brake 110, so that the brake 110 is stably mounted on the bracket 120.

In addition, for the installation of a plurality of fixing shafts 130, most of the fixing shafts 130 may be removed during maintenance, leaving one fixing shaft 130 to rotate the brake 110 out of the installation groove 124 as a rotation point.

In some embodiments, referring to fig. 2, the compressing member 140 includes a compressing member 141, a first fastener 142, and a second fastener 143. The first fastener 142 detachably fixes one end of the pressing member 141 to the bracket 120, and the second fastener 143 detachably fixes the other end of the pressing member 141 to the stopper 110. It can be seen that the pressing members 141 are respectively fixed to the bracket 120 and the stopper 110 by the first and

second fastening members

142 and 143, respectively, during the assembly process, so as to achieve locking of the stopper 110 to the bracket 120. Also, in the maintenance process, the first and

second fastening members

142 and 143 are respectively removed from the pressing member 141, and the pressing member 141 is removed, so that maintenance of the brake 110 is facilitated.

It should be noted that, the connection manner of the first fastener 142 and the second fastener 143 on the pressing member 141 may be, but not limited to, threaded connection, clamping connection, etc.

Further, referring to fig. 2, the bracket 120 is provided with a first fixing hole 125, and the fixing shaft 130 is provided with a second fixing hole 131. The pressing member 141 is provided with a first fitting hole 144 corresponding to the first fixing hole 125 and a second fitting hole 145 corresponding to the second fixing hole 131, the first fastening member 142 is disposed through the first fitting hole 144 and the first fixing hole 125, and the second fastening member 143 is disposed through the second fitting hole 145 and the second fixing hole 131. It can be seen that, during installation and fixation, the first fastening member 142 is respectively inserted into the first fitting hole 144 and the first fixing hole 125, so that one end of the pressing member 141 is stably connected to the bracket 120; the second fastening member 143 is then inserted into the second fitting hole 145 and the second fixing hole 131, respectively, so that the other end of the pressing member 141 is stably coupled to the brake 110 to complete the stable fixing of the brake 110.

The first fixing hole 125 and the second fixing hole 131 may be designed as threaded holes, or may be designed as non-threaded holes, respectively. Meanwhile, the first fastener 142 and the second fastener 143 may be designed as bolts, pins, or the like, respectively. When the first and second fixing holes 125 and 131 are designed as non-threaded holes, respectively, and the first and

second fasteners

142 and 143 are designed as bolts, respectively, the fixed mounting of the brake 110 on the bracket 120 may be accomplished using nuts or nuts, etc.

In some embodiments, referring to fig. 1, at least two brakes 110 are provided, and all the brakes 110 are arranged at intervals along the circumferential direction of the bracket 120, so as to ensure the braking performance of the traction machine.

In some embodiments, the fixed shaft 130 is a pin shaft, and thus, the brake 110 and the bracket 120 are mounted to be pinned, so that the mounting operation of the brake 110 is facilitated.

In some embodiments, referring to fig. 1, a traction machine includes a braking structure 100 of any one of the above traction machines.

In the above-mentioned traction machine, the brake structure 100 of the traction machine is adopted, and the brake 110 is mounted on the bracket 120 by the fixed shaft 130 in the assembly process, so that the mounting structure of the brake 110 is simplified, and the overall weight of the traction machine is reduced. Meanwhile, the brake 110 is locked on the bracket 120 by the pressing part 140, so that the brake 110 is ensured to be kept stable on the bracket 120, the braking effect is improved, and the working noise of the brake 110 is reduced. During maintenance, the hold-down member 140 is removed from the stopper 110 or the bracket 120, and the lock is released. At this point, maintenance may be performed by rotating the brake 110 such that it is at least partially rotated out of the bracket 120. Through the design, the maintenance personnel can avoid the whole disassembly of the brake 110, the maintenance operation steps are reduced, the installation is simple, the maintenance is convenient, and the maintenance efficiency of the brake 110 is improved.

In some embodiments, an elevator includes the above traction machine.

In the elevator, the brake structure 100 of the traction machine is adopted, the brake 110 is mounted on the bracket 120 by the fixed shaft 130 in the assembly process, the mounting structure of the brake 110 is simplified, and the whole weight of the traction machine is reduced. Meanwhile, the brake 110 is locked on the bracket 120 by the pressing part 140, so that the brake 110 is ensured to be kept stable on the bracket 120, the braking effect is improved, and the working noise of the brake 110 is reduced. During maintenance, the hold-down member 140 is removed from the stopper 110 or the bracket 120, and the lock is released. At this point, maintenance may be performed by rotating the brake 110 such that it is at least partially rotated out of the bracket 120. Through the design, the maintenance personnel can avoid the whole disassembly of the brake 110, the maintenance operation steps are reduced, the installation is simple, the maintenance is convenient, and the maintenance efficiency of the brake 110 is improved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Claims

1. A braking structure of a traction machine, characterized by comprising:

a bracket;

a brake mounted on the bracket by a stationary shaft, the stationary shaft having an axis;

and the pressing part is detachably connected with the bracket and the brake, and when the pressing part is detached from the brake and/or the bracket, the brake rotates around the axis and at least partially rotates out of the bracket.

2. The braking structure of the traction machine according to claim 1, wherein a first mounting hole is provided on the bracket, a second mounting hole corresponding to the first mounting hole is provided on the brake, and the fixing shaft is penetrated in the first mounting hole and the second mounting hole.

3. The braking structure of the traction machine according to claim 2, wherein the bracket includes a main body and two mounting portions provided on the main body at intervals, both of the mounting portions are provided with the first mounting holes, and the second mounting holes are located between the two mounting portions.

4. The braking structure of the traction machine as set forth in claim 1, wherein a mounting groove is provided on an edge of the bracket, the brake is fitted into the mounting groove, and the brake can be rotated out of the mounting groove when the pressing member is removed from the brake and/or the bracket.

5. The braking structure of the traction machine as set forth in claim 1, wherein at least two of the fixed shafts are provided on the same brake, and all of the fixed shafts are arranged at intervals in a circumferential direction of the brake.

6. The brake structure of the traction machine according to any one of claims 1 to 5, wherein the pressing member includes a pressing member, a first fastener detachably fixing one end of the pressing member to the bracket, and a second fastener detachably fixing the other end of the pressing member to the brake.

7. The braking structure of the traction machine according to claim 6, wherein the bracket is provided with a first fixing hole, the fixing shaft is provided with a second fixing hole, the pressing member is provided with a first fitting hole corresponding to the first fixing hole and a second fitting hole corresponding to the second fixing hole, the first fastening member is arranged through the first fitting hole and the first fixing hole, and the second fastening member is arranged through the second fitting hole and the second fixing hole.

8. The braking structure of the traction machine according to any one of claims 1 to 5, wherein at least two of the brakes are arranged at intervals in the circumferential direction of the bracket; and/or the number of the groups of groups,

the fixed shaft is a pin shaft.

9. A traction machine comprising the braking structure of the traction machine according to any one of claims 1 to 8.

10. An elevator comprising the hoisting machine of claim 9.