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CN-224214615-U - Electromagnetic brake

CN224214615UCN 224214615 UCN224214615 UCN 224214615UCN-224214615-U

Abstract

The utility model discloses an electromagnetic brake, which comprises a friction plate connected to a motor, armatures and a brake disc arranged on two sides of the friction plate, and a brake coil housing arranged on one side of the armatures far away from the brake disc, wherein an extension plate extends out of one side of the brake disc, which faces the brake coil housing, and the end part of the extension plate is in pushing fit with the end surface of the brake coil housing so as to limit the installation space of the friction plate and the armatures. The extension plate thus directly abuts the end face of the brake coil housing by its specific length as a reference length, which directly determines the total distance from the brake coil housing (reference surface) to the brake disc. Compared with the prior art, the method has the advantages that gaps between the friction plate and the brake disc, between the armature iron and the friction plate and the like are needed to be measured and calculated one by one to realize assembly. According to the embodiment of the utility model, the assembly efficiency is obviously improved by limiting the whole space gap based on the length of the extension plate, and the whole construction difficulty is effectively reduced.

Inventors

  • ZHANG HENGSHUO
  • ZHANG JIE

Assignees

  • 成都鑫德力科技有限公司

Dates

Publication Date
20260508
Application Date
20250616

Claims (9)

  1. 1. An electromagnetic brake comprising a friction plate (13) connected to a motor, and an armature (12) and a brake disc (14) arranged on both sides of the friction plate (13), and a brake coil housing (11) arranged on a side of the armature (12) remote from the brake disc (14), characterized in that: An extension plate (141) extends from one side of the brake disc (14) facing the brake coil housing (11), and the end part of the extension plate (141) is in pushing fit with the end surface of the brake coil housing (11) so as to limit the installation space of the friction plate (13) and the armature (12).
  2. 2. An electromagnetic brake as claimed in claim 1, characterized in that the motor comprises a motor housing, the brake coil housing (11) being part of the motor housing to constitute the motor housing.
  3. 3. Electromagnetic brake according to claim 2, characterized in that a number of bolting lugs are provided on the peripheral side of the brake coil housing (11), which bolting lugs are adapted for bolting with other parts of the motor housing.
  4. 4. The electromagnetic brake as recited in claim 1, wherein the brake disc (14) is bent at a peripheral edge thereof to extend out of the extension plate (141), and after the end of the extension plate (141) is pushed against the brake coil housing, the extension plate (141) and the brake disc (14) cover the friction plate (13) and the armature (12).
  5. 5. The electromagnetic brake as defined in claim 4, wherein the brake coil housing further includes a first boss (111), an outer peripheral diameter of the first boss (111) is matched with an inner peripheral diameter defined by the extension plate (141), and the first boss (111) is matched with an inner peripheral surface of the extension plate (141) after an end portion of the extension plate (141) is pushed against an end face of the brake coil housing.
  6. 6. Electromagnetic brake according to claim 1, characterized in that the brake disc (14) is provided with a fastening bolt (30) extending therethrough, at least part of the fastening bolt (30) being screwed into the brake coil housing (11) and connecting and fixing the brake disc (14) with the brake coil housing (11).
  7. 7. The electromagnetic brake as recited in claim 6, characterized in that the fastening bolt (30) also extends through the armature (12).
  8. 8. Electromagnetic brake according to claim 1, characterized in that the output shaft (20) of the motor is provided with a hub (131), the disc surface of the hub (131) is perpendicular to the output shaft (20), and the friction plate (13) is sleeved on the periphery of the hub (131).
  9. 9. An electromagnetic brake as claimed in claim 1, characterized in that the brake coil housing (11) extends with a second boss (112) on the side remote from the friction plate (13), the outer peripheral diameter of the second boss (112) matching the inner peripheral diameter of the housing of the motor.

Description

Electromagnetic brake Technical Field The utility model relates to the technical field of braking equipment, in particular to an electromagnetic brake. Background The electromagnetic brake is a braking device commonly used in machinery and mainly comprises an electromagnet, an armature, a friction plate and other parts. When electromagnetic force is generated by the electromagnetic coil, the armature is attracted, and after the electromagnetic force is cut off, the spring pushes the armature and the friction plate to be in friction braking with friction parts such as a brake disc or a brake drum. However, in the manufacturing process of the electromagnetic brake, the gaps among the armature, the stator and the friction plate need to be adjusted to a certain range so as to meet the braking requirement. For example, the prior patent CN219570683U of the applicant sets a plurality of discs such as armatures, friction plates, spline sleeves and the like in the axial direction of the brake, and the gaps among the parts need to be calculated strictly according to the processing requirements for assembly during manufacturing, and the existing electromagnetic brake has a complex structure and increases the processing difficulty. In summary, there is room for improvement in the structure of the electromagnetic brake. Disclosure of utility model The utility model aims to overcome the defects of the prior art and provide an electromagnetic brake, which is simple in structure and low in processing and assembling difficulty. The aim of the utility model is realized by the following technical scheme: The utility model provides an electromagnetic braking ware, includes the friction disc that is connected to the motor, and set up armature and the brake disc of friction disc both sides, and set up in the armature is kept away from the brake coil shell of brake disc one side, the brake disc orientation one side of brake coil shell extends the extension board, and the tip of extension board with the terminal surface of brake coil shell supports the pushing fit, in order to limit the installation space of friction disc, armature. The effect is that the extension plate abuts directly with its specific length against the end face of the brake coil housing as a reference length, which directly determines the total distance from the brake coil housing (reference surface) to the brake disc. Compared with the prior art, the method has the advantages that gaps between the friction plate and the brake disc, between the armature and the friction plate and the like are measured, calculated and finely adjusted one by one to meet the design requirement. According to the embodiment of the application, the assembly efficiency is obviously improved by limiting the whole space gap based on the length of the extension plate, and the whole construction difficulty is effectively reduced. Further, the motor includes a motor housing, and the brake coil housing is provided as a part of the motor housing to constitute the motor housing. Further, a plurality of bolt connection lugs are arranged on the periphery side of the brake coil housing, and the bolt connection lugs are suitable for being connected with other parts of the motor housing in a bolt mode. Further, the brake disc is bent and extends out of the extending plate at the peripheral side edge of the brake disc, and after the end part of the extending plate is propped against the brake coil shell, the extending plate and the brake disc cover the friction plate and the armature. Further, a first boss is further extended from the brake coil housing, the outer peripheral diameter of the first boss is matched with the inner peripheral diameter defined by the extension plate, and after the end part of the extension plate is pushed to the end face of the brake coil housing, the first boss is matched with the inner peripheral surface of the extension plate. Further, the brake disc is provided with a fastening bolt in a penetrating manner, and at least part of the fastening bolt is screwed into the brake coil housing and fixedly connected with the brake disc. Further, the fastening bolt also penetrates through the armature. Further, a hub is arranged on the output shaft of the motor, the disc surface of the hub is perpendicular to the output shaft, and the friction plate is sleeved on the periphery of the hub. Further, a second boss extends from the brake coil housing at a side away from the friction plate, and the outer peripheral diameter of the second boss is matched with the inner peripheral diameter of the housing of the motor. Drawings FIG. 1 is a schematic cross-sectional view of an electromagnetic brake and an output shaft according to some embodiments of the present application; FIG. 2 is a schematic illustration of an electromagnetic brake according to some embodiments of the application; In the figure: 10-electromagnetic brake; 11-brake coil housing, 111-first boss, 112-second boss, 113-b