Shaft brake and inner rotor hoist

Abstract

The shaft brake brake and the inner rotor traction machine claimed by the present application, the shaft brake brake includes brake disc, a plurality of brake bodies and a plurality of connecting assemblies, the brake disc is used to be connected to the part of the shaft extension shell in the way of key groove cooperation;A plurality of brake bodies are arranged on the outside of the brake disc, wherein each brake body comprises an electromagnet and an armature;A plurality of connecting assemblies correspond to a plurality of brake bodies one by one, wherein each connecting assembly comprises a mounting bolt and an elastic element, the elastic element is installed between the shell and the corresponding electromagnet in the way of pre-compression, the mounting bolt is screwed with the shell after passing through the electromagnet, for installing the corresponding brake body to the shell. So that the shaft brake brake can adjust the clearance between the electromagnet and the armature by adjusting the tightness of the mounting bolt, which can facilitate the adjustment operation, so as to facilitate the installation and maintenance of the shaft brake brake.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromagnetic brakes, and particularly relates to a shaft brake and an inner-rotor traction machine. Background Technique

[0002] To meet the requirements of the elevator industry for the compactness and high maintainability of the machine-roomless inner-rotor traction machine, the brake equipped on the inner-rotor traction machine usually adopts a modular structure design to meet the requirements of on-site installation and site maintenance.

[0003] At present, in the existing brakes, the electromagnet is usually installed on the housing of the inner-rotor traction machine by means of a hollow bolt, and a locking bolt is supplemented for mechanical loosening prevention to ensure the reliability of the installation of the brake under a vibration environment. However, due to the limitation of the fixing method of the electromagnet on the housing, it is relatively difficult to adjust the installation position of the brake on the housing, and it is easy to interfere with the base of the inner-rotor traction machine during actual operation, resulting in inconvenient adjustment of the gap between the electromagnet and the armature, bringing many challenges to on-site installation and maintenance. Content of the Utility Model

[0004] In view of this, it is necessary to provide a shaft brake and an inner-rotor traction machine for solving the above technical problems.

[0005] A shaft brake is used for being installed on an inner-rotor traction machine body. The inner-rotor traction machine body includes a housing and a rotating shaft, and the rotating shaft extends outwards partially relative to the housing; the shaft brake includes:

[0006] A brake disc, which is used for being connected to the part of the rotating shaft extending out of the housing in a keyway fitting manner;

[0007] A plurality of brake bodies are arranged on the outer side of the brake disc. Among them, each brake body includes an electromagnet and an armature. The armature is movably installed on the electromagnet and is arranged facing the brake disc, and the electromagnet can attract or release the armature when being powered on or powered off, so as to drive the armature to make a reciprocating motion relative to the brake disc and control the locking / unlocking of the brake disc;

[0008] A plurality of connecting components correspond to the plurality of brake bodies one by one. Among them, each connecting component includes a mounting bolt and an elastic element. The elastic element is installed between the housing and the corresponding electromagnet in a pre-compressed manner. The mounting bolt is screwed with the housing after passing through the electromagnet, and is used for installing the corresponding brake body on the housing;

[0009] In each brake body, the gap between the electromagnet and the armature can be adjusted by the mounting bolt.

[0010] It is understandable that by pre-compressing an elastic element between the electromagnet and the housing, the axle brake can adjust the gap between the electromagnet and the armature by adjusting the tightness of the mounting bolts. This facilitates adjustment and operation, and makes the axle brake easier to install and maintain on site.

[0011] In one embodiment, the mounting bolt includes a bolt head, and the mounting bolt presses against and limits the electromagnet through the bolt head;

[0012] Each of the connecting components further includes an anti-loosening plate, which is detachably connected to the electromagnet and circumferentially limited by the bolt head.

[0013] It is understandable that using anti-loosening plates to circumferentially limit the bolt head is a way to prevent loosening of the bolt after adjustment, thus avoiding the risk of loosening during frequent adjustments.

[0014] In one embodiment, the number of brake bodies is configured to be two, and the two brake bodies are arranged side by side in a first direction;

[0015] In each of the brake bodies, the electromagnets are respectively mounted to the housing on two opposite sides in the second direction by the mounting bolts, wherein the second direction is perpendicular to the first direction, and the elastic element is fitted onto the mounting bolts.

[0016] In one embodiment, the connecting assembly further includes a positioning pin, through which the electromagnet is slidably connected to the housing.

[0017] It is understandable that locating pins are used to position the electromagnet on the housing, which facilitates the assembly of the electromagnet onto the housing and ensures the consistency of the electromagnet's orientation during adjustment.

[0018] In one embodiment, the number of positioning pins corresponding to each electromagnet is configured to be multiple, and the multiple positioning pins are arranged on two opposite sides of the corresponding electromagnet in a second direction.

[0019] In one embodiment, the locating pin is connected to the electromagnet in an interference fit, and the locating pin is used to slide with the housing.

[0020] It is understandable that the locating pin is assembled onto the electromagnet using an interference fit, as this facilitates the assembly of the locating pin onto the electromagnet.

[0021] In one embodiment, the electromagnet and the armature are slidably connected by a guide pin.

[0022] It is understandable that guide pins are used to guide the reciprocating motion of the armature relative to the electromagnet, thus ensuring the consistency of the armature's direction of movement.

[0023] In one embodiment, the brake body further includes a control switch, which is mounted on the end face of the electromagnet away from the armature and electrically connected to the electromagnet, for controlling the energization / de-energization of the electromagnet.

[0024] It is understandable that placing the control switch that controls the electromagnet's on / off state on the back of the electromagnet ensures that the switch does not occupy the height space of the brake body, which is beneficial for subsequent maintenance by the user.

[0025] In one embodiment, friction pads are provided on both sides of the brake disc, and the armature can push the friction pads against the housing to lock the brake disc.

[0026] This application also provides an internal rotor traction machine, including an internal rotor traction machine body and the aforementioned shaft brake;

[0027] The internal rotor traction machine body includes a housing and a rotating shaft, with the rotating shaft extending outward relative to the housing portion; the brake disc is connected to the portion of the rotating shaft extending out of the housing via a keyway engagement, and the brake body is mounted on the housing via a corresponding connecting component.

[0028] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0029] The electromagnetic brake and internal rotor traction machine claimed in this application, by pre-compressing an elastic element between the electromagnet and the housing, enable the axle brake to adjust the gap between the electromagnet and the armature by adjusting the tightness of the mounting bolts. This facilitates adjustment and operation, thereby making the axle brake easier to install and maintain on site. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of the shaft brake provided in this application when it is used in an internal rotor traction machine.

[0032] Figure 2 This is a partial sectional view of the axle brake provided in this application.

[0033] Figure 3 This is a schematic diagram of the structure of the anti-loosening sheet in this application.

[0034] Reference numerals: 100, Axle brake; 10, Brake disc; 11, Friction pad; 20, Brake body; 21, Electromagnet; 211, End face; 22, Armature; 23, Winding coil; 24, Compression spring; 25, Adjusting bolt; 26, Disc spring; 27, Guide pin; 28, Control switch; 30, Connecting assembly; 301, Screw; 31, Mounting bolt; 311, Bolt head; 32, Elastic element; 33, Anti-loosening plate; 331, Arc hole; 34, Positioning pin; 210, Housing; 220, Rotating shaft. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] It should be noted that when a component is said to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or may have an intervening component.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] The shaft brake 100 claimed in this application specifically refers to an electromagnetic brake applied to the body of an internal rotor traction machine (not shown in the figure). Here, the internal rotor traction machine body includes a housing 210 and a rotating shaft 220, with the rotating shaft 220 extending outward relative to the housing 210. It should be noted that other structural components and working principles of this internal rotor traction machine body can be implemented using existing conventional methods, and will not be elaborated upon here.

[0039] like Figure 1 , Figure 2 As shown, the axle brake 100 provided in this application includes a brake disc 10, multiple brake bodies 20, and multiple connecting assemblies 30. The brake disc 10 is connected to the portion of the rotating shaft 220 extending out of the housing 210 via a keyway fit. Multiple brake bodies 20 are disposed on the outer side of the brake disc 10. Each brake body 20 includes an electromagnet 21 and an armature 22. The armature 22 is movably mounted on the electromagnet 21 facing the brake disc 10. When the electromagnet 21 is energized or de-energized, it can attract or release the armature 22 to drive the armature 22 to reciprocate relative to the brake disc 10. The system controls the locking / unlocking of the brake disc 10. Multiple connecting components 30 correspond one-to-one with multiple brake bodies 20. Each connecting component 30 includes a mounting bolt 31 and an elastic element 32. The elastic element 32 is pre-compressed and installed between the housing 210 and the corresponding electromagnet 21. The mounting bolt 31 passes through the electromagnet 21 and is screwed onto the housing 210 to mount the corresponding brake body 20 onto the housing 210. In each brake body 20, the distance between the electromagnet 21 and the housing 210 can be adjusted by the mounting bolt 31, and the gap between the electromagnet 21 and the armature 22 can also be adjusted. Here, the elastic element 32 is specifically configured as a compression spring or other highly elastic material, and it is fitted onto the mounting bolt 31 at the location between the housing 210 and the electromagnet 21. It should be noted that the outer side of the brake disc 10 specifically refers to the side of the brake disc 10 away from the housing 210.

[0040] As can be seen from the above, the axle brake 100 of this application pre-compresses the elastic element 32 between the electromagnet 21 and the housing 210, so that the axle brake 100 can adjust the gap between the electromagnet 21 and the armature 22 by adjusting the tightness of the mounting bolt 31. This facilitates the adjustment operation and makes it easier to install and maintain the axle brake 100 on site.

[0041] It should be noted that, since the electromagnet 21 in the brake body 20 is fixed to the housing 210 by the mounting bolt 31, the shaft brake 100 can utilize the structural characteristics of the mounting bolt 31 to avoid positional interference between the user and the inner rotor traction machine base when the user uses external tools to tighten the mounting bolt 31, thereby facilitating the adjustment of the gap between the electromagnet 21 and the armature 22.

[0042] like Figure 1 As shown, in one embodiment, friction pads 11 are provided on both sides of the brake disc 10, and the armature 22 can push the friction pads 11 against the housing 210 to lock the brake disc. That is to say, the axle brake 100 of this embodiment can use the friction between the friction pads 11 and the armature 22 and the housing 210 respectively to lock the brake disc 10, and then use the keyway cooperation between the brake disc 10 and the rotating shaft 220 to finally achieve the braking operation of the rotating shaft 220.

[0043] In one embodiment, two brake bodies 20 are configured, arranged side-by-side in the first direction X. In each brake body 20, an electromagnet 21 is mounted to the housing 210 on opposite sides in the second direction Z using mounting bolts 31, wherein the second direction Z is perpendicular to the first direction X. Here, each brake body 20 has two mounting bolts 31 in the first direction X; that is, the electromagnet 21 of the brake body 20 can be fixed to the housing 210 using four mounting bolts 31. This allows the axle brake 100 to adjust the gap between the electromagnet 21 and the armature 22 by adjusting the tightness of the mounting bolts 31.

[0044] like Figure 2 As shown, in one embodiment, a winding coil 23 is installed inside the electromagnet 21, and multiple compression springs 24 are pre-compressed between the electromagnet 21 and the armature 22. When the winding coil 23 is de-energized, the armature 22 presses against the friction plate 11 on the brake disc 10 under the push of the compression springs 24, thus locking the brake disc 10. When the winding coil 23 is energized, the magnetic field generated by the energized winding coil 23 can attract the armature 22 and engage the armature, thus locking the brake disc 10. It should be noted that the energization and de-energization of the electromagnet 21 described above specifically refers to the energization and de-energization of the winding coil 23 inside the electromagnet 21.

[0045] like Figure 2As shown, in this embodiment, an adjusting bolt 25 is installed on the electromagnet 21. One end of the adjusting bolt 25 extends into the electromagnet 21 and abuts against the armature 22 via a disc spring 26. The nonlinear deformation characteristics of the disc spring 26 are used to adjust the linear deformation characteristics of the compression spring 24. This is used to adjust the noise performance of the axle brake 100 in the initial state and to reduce noise and compensate for the compression force and stroke after long-term use and fatigue. In other words, the brake body 20 can play a compensatory noise reduction role by utilizing the above-mentioned structure of the adjusting bolt 25 and the disc spring 26.

[0046] like Figure 2 As shown, in this embodiment, the electromagnet 21 and the armature 22 are slidably connected by a guide pin 27. This allows the brake body 20 to guide the armature 22 in its reciprocating motion relative to the electromagnet 21 when the brake body 20 is working, thus ensuring the consistency of the armature 22's direction of movement. Here, the guide pin 27 is connected to the electromagnet 21 with an interference fit and to the armature 22 with a clearance fit. It can be understood that in other embodiments, the guide pin 27 may also be connected to the armature 22 with an interference fit and to the electromagnet 21 with a clearance fit, which will not be elaborated here.

[0047] like Figure 1 As shown, in one embodiment, the brake body 20 further includes a control switch 28. The control switch 28 is mounted on the end face 211 of the electromagnet 21 away from the armature 22 and is electrically connected to the electromagnet 21, used to control the energization / de-energization of the electromagnet 21. That is, in this embodiment, the control switch for controlling the energization / de-energization of the electromagnet 21 is located on the back of the electromagnet 21, so that the setting of the control switch 28 does not occupy the height space of the brake body 20, which is beneficial for subsequent maintenance by the user. Here, the control switch can specifically be configured as a micro switch or a toggle switch.

[0048] like Figure 1 , Figure 2 As shown, in one embodiment, the mounting bolt 31 includes a bolt head 311, and the mounting bolt 31 presses against the limiting electromagnet 21 through the bolt head 311 to press and limit the electromagnet 21 onto the housing 210. Here, the bolt head 311 can specifically be an external hexagonal structure to facilitate the tightening of the mounting bolt 31 by an external tightening tool. It is understood that in other embodiments, the bolt head 311 can also be configured as an external octagonal structure or an internal hexagonal structure, which will not be elaborated here.

[0049] like Figure 2 , Figure 3As shown, in this embodiment, the connecting assembly 30 further includes an anti-loosening plate 33, which is detachably connected to the electromagnet 21 and circumferentially limited by the bolt head 311. This allows for anti-loosening and limiting of the mounting bolt 31 after it has been fully adjusted, thus avoiding the risk of loosening of the mounting bolt 31 during frequent adjustments. Here, the anti-loosening plate 33 is fitted onto the bolt head 311 of the mounting bolt 31 and circumferentially limited by the bolt head 311. Furthermore, the anti-loosening plate 33 abuts against the electromagnet 21, and is detachable from the electromagnet 21 by a screw 301 that passes through the arc-shaped hole 331 on the anti-loosening plate 33 and is screwed onto the electromagnet 21.

[0050] like Figure 2 As shown, in one embodiment, the connecting assembly 30 further includes a positioning pin 34, through which the electromagnet 21 is slidably connected to the housing 210. That is, in this embodiment, the brake body 20 can be mounted and positioned on the electromagnet 21 by the positioning pin 34, which facilitates the assembly of the electromagnet 21 onto the housing 210 and ensures the consistency of the orientation of the electromagnet 21 during adjustment.

[0051] In this embodiment, the number of positioning pins 34 corresponding to each electromagnet 21 is configured to be multiple, and the multiple positioning pins 34 are arranged on two opposite sides of the corresponding electromagnet 21 in the second direction Z. Here, the number of positioning pins 34 is configured to be two, specifically, one positioning pin 34 can be respectively provided at the middle position between the two mounting bolts 31 in the first direction X of the electromagnet 21.

[0052] In this embodiment, the positioning pin 34 is connected to the electromagnet 21 by an interference fit, and the positioning pin 34 is used to slide with the housing 210, which makes it easy to assemble the positioning pin 34 onto the electromagnet 21.

[0053] In addition, this application also provides an internal rotor traction machine, including an internal rotor traction machine body and the aforementioned shaft brake 100; the internal rotor traction machine body includes a housing 210 and a rotating shaft 220, with the rotating shaft 220 extending outward relative to the housing 210; the brake disc 10 is connected to the part of the rotating shaft 220 extending out of the housing 210 by a keyway engagement, and the brake body 20 is mounted on the housing 210 by a corresponding connecting component 30.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.

Claims

1. A shaft brake for mounting to an inner rotor traction machine body, the inner rotor traction machine body comprising a housing (210) and a rotating shaft (220), the rotating shaft (220) extending outward relative to the housing (210); characterized in that, The axle brake (100) includes: Brake disc (10) is used to connect to the part of the shaft (220) that extends out of the housing (210) in a keyway engagement manner; Multiple brake bodies (20) are disposed on the outside of the brake disc (10). Each brake body (20) includes an electromagnet (21) and an armature (22). The armature (22) is movably mounted on the electromagnet (21) and faces the brake disc (10). When the electromagnet (21) is energized or de-energized, it can attract or release the armature (22) to drive the armature (22) to reciprocate relative to the brake disc (10) and control the locking / unlocking of the brake disc (10). Multiple connecting components (30) correspond one-to-one with multiple brake bodies (20). Each connecting component (30) includes a mounting bolt (31) and an elastic element (32). The elastic element (32) is pre-compressed and installed between the housing (210) and the corresponding electromagnet (21). The mounting bolt (31) passes through the electromagnet (21) and is screwed onto the housing (210) to install the corresponding brake body (20) onto the housing (210). In each of the brake bodies (20), the gap between the electromagnet (21) and the armature (22) can be adjusted by the mounting bolt (31).

2. The axle brake according to claim 1, characterized in that, The mounting bolt (31) includes a bolt head (311), and the mounting bolt (31) presses against and limits the electromagnet (21) through the bolt head (311). Each of the connecting components (30) further includes an anti-loosening plate (33), which is detachably connected to the electromagnet (21) and circumferentially limited by the bolt head (311).

3. The axle brake according to claim 1, characterized in that, The number of brake bodies (20) is configured to be two, and the two brake bodies (20) are arranged side by side in a first direction; In each of the brake bodies (20), the electromagnets (21) are respectively mounted to the housing (210) on two opposite sides in the second direction by the mounting bolts (31), wherein the second direction is perpendicular to the first direction, and the elastic element (32) is fitted onto the mounting bolts (31).

4. The axle brake according to claim 1, characterized in that, Each of the connecting components (30) further includes a locating pin (34), through which the electromagnet (21) is slidably connected to the housing (210).

5. The axle brake according to claim 4, characterized in that, The number of positioning pins (34) corresponding to each electromagnet (21) is configured to be multiple, and the multiple positioning pins (34) are arranged on two opposite sides of the corresponding electromagnet (21) in the second direction.

6. The axle brake according to claim 4, characterized in that, The positioning pin (34) is connected to the electromagnet (21) in an interference fit, and the positioning pin (34) is used to slide with the housing (210).

7. The axle brake according to claim 1, characterized in that, The electromagnet (21) and the armature (22) are slidably connected by a guide pin (27).

8. The axle brake according to claim 1, characterized in that, The brake body (20) also includes a control switch (28), which is installed on the end face of the electromagnet (21) away from the armature (22) and electrically connected to the electromagnet (21) for controlling the energization / de-energization of the electromagnet (21).

9. The axle brake according to claim 1, characterized in that, Friction pads (11) are provided on both sides of the brake disc (10), and the armature (22) can push the friction pads (11) against the housing (210) to lock the brake disc (10).

10. An internal rotor traction machine, characterized in that, Includes an internal rotor traction machine body and an axle brake (100) as described in any one of claims 1 to 9. The inner rotor traction machine body includes a housing (210) and a rotating shaft (220), the rotating shaft (220) extending outward relative to the housing (210); the brake disc (10) is connected to the part of the rotating shaft (220) extending out of the housing (210) by a keyway engagement, and the brake body (20) is mounted on the housing (210) by the corresponding connecting component (30).

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