JP2015024908A - Electromagnetic brake device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To propose an electromagnetic brake device which easily performs checking and removal of abrasion powder.SOLUTION: An electromagnetic brake device includes: a brake shoe which may slidably contact with a brake drum; an amateur supporting the brake shoe; and a core incorporating an electromagnetic coil which suctions the amateur and separates the brake shoe from the brake drum. The electromagnetic brake device further includes: an elastic body provided at the brake shoe; and a stopper provided at the amateur. One end of the elastic body from among both end parts is fixed to a side surface part of the brake shoe and a part of the other end contacts with the stopper thereby holding the elastic body at the amateur side.

Description

  The present invention relates to an electromagnetic brake device.

  Conventionally, a brake shoe slidably brought into contact with a brake drum, an amateur supporting the brake shoe, a braking spring that presses the armature to urge the brake shoe against the brake drum, and the amateur is attracted against the urging force of the braking spring. In addition, there is an electromagnetic brake device including a core with a built-in electromagnetic coil that separates the brake shoe from the brake drum.

  For example, Patent Document 1 discloses an electromagnetic brake device that fixes a brake shoe so as to be movable by a predetermined amount, and uses the elastic force of an elastic body fixed to the amateur to connect the end of the brake shoe to the amateur side. The structure to hold is disclosed. 1 and 2 show the structure of a conventional electromagnetic brake device. FIG. 1 is a front view, and FIG. 2 is an enlarged view of a main part.

  As shown in FIGS. 1 and 2, in the electromagnetic brake device 1, one end of the elastic body 8 is fixed to the armature 4 by the fixing bolt 9, and the other end face that is not fixed is the end of the brake shoe 3. The brake shoe 3 is held on the armature 4 side so that the protrusion provided on the portion is hooked.

International Publication No. 2011-004468

  However, the electromagnetic brake device described in Patent Document 1 has a problem that it is difficult to confirm wear powder generated on the friction surface between the brake shoe and the amateur or the friction surface between the elastic body and the brake shoe. Moreover, when it becomes necessary to remove the generated abrasion powder, there is a problem that it takes time and effort to discharge.

  The present invention has been made in consideration of the above points, and proposes an electromagnetic brake device capable of easily confirming and removing wear powder.

  In order to solve such a problem, an electromagnetic brake device according to the present invention includes a brake shoe that is slidable in contact with a brake drum, an amateur that supports the brake shoe, and an electromagnetic coil that sucks the amateur and separates the brake shoe from the brake drum. In an electromagnetic brake device including a core with a built-in, an elastic body provided on a brake shoe and a stopper provided on an amateur, the elastic body has one end of both ends on the side surface of the brake shoe. It is fixed and is held on the amateur side by a part of the other end coming into contact with the stopper.

  According to the present invention, wear powder can be easily confirmed and removed.

It is a front view of the conventional electromagnetic brake device. It is a principal part enlarged view of the conventional electromagnetic brake device. It is a principal part enlarged view of the electromagnetic brake device in this Embodiment. It is a principal part enlarged view of the electromagnetic brake device in other embodiment.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The general structure of the electromagnetic brake device will be described with reference to FIGS. 1 and 2, and the structure of the main part of the electromagnetic brake device in the present embodiment will be described with reference to FIGS. 3 and 4. Members having the same function will be described with the same reference numerals.

First, the general structure of the electromagnetic brake device 1 will be described with reference to FIG.
The electromagnetic brake device 1 is provided, for example, in a hoisting machine for braking an elevator lifting body, and includes a brake shoe 3 that can be slidably contacted with a brake drum 2, an armature 4 that supports the brake shoe 3, A core 5 having a built-in electromagnetic coil for sucking the armature 4 and separating the brake shoe 3 from the brake drum 2 is provided. The core 5 is fixed by a bolt 7 provided on a frame 6 that is a fixing portion.

  FIG. 2 is an enlarged view of a main part of the electromagnetic brake device 1. As shown in FIG. 2, wear powder generated on the friction surface between the brake shoe 3 and the armature 4 and the friction surface between the brake shoe 3 and the elastic body 8 generally accumulates in the A part. In this case, it is difficult to visually confirm the wear powder accumulated in the A part from the outside, and it is difficult to discharge the wear powder from the A part.

Next, the main part of the electromagnetic brake device 1A of the present embodiment will be described with reference to FIG.
The electromagnetic brake device 1A according to the present embodiment is different from the conventional electromagnetic brake device 1 in that the electromagnetic brake device 1A includes an elastic body 10A and a stopper 11A.

  Specifically, the elastic body 10 </ b> A is an L-shaped and plate-like elastic body, and is provided on a side surface portion of the brake shoe 3. The short side surface of the elastic body 10A and the side surface portion of the brake shoe 3 are fixed by a fixing member such as a bolt, for example. A part of the long side surface of the elastic body 10A is in contact with the stopper 11A.

  The stopper 11A has one end fixed to the armature 4 and the other end having a hook structure for hooking the elastic body 10A. By hooking the elastic body 10A on the hook structure of the stopper 11A, the brake shoe 3 can be held on the armature 4 side while being able to move a small amount.

  In the electromagnetic brake device 1A configured as described above, the A portion can be provided wider than in the past. Therefore, when wear powder generated on the friction surface between the brake shoe 3 and the armature 4 and the friction surface between the elastic body 10A and the stopper 11A is accumulated on the part A by the brake operation, the wear powder is visually observed from the outside. It can be easily confirmed. Further, when it is necessary to remove the wear powder, the discharge operation can be easily performed.

Next, a main part of an electromagnetic brake device 1B according to another embodiment will be described with reference to FIG.
An electromagnetic brake device 1B according to another embodiment is different from the electromagnetic brake device 1A in that it includes an elastic body 10B and a stopper 11B.

  Specifically, the elastic body 10 </ b> B is an L-shaped and plate-like elastic body provided with one or a plurality of holes, and is provided on a side surface portion of the brake shoe 3. The short side surface of the elastic body 10B and the side surface portion of the brake shoe 3 are fixed by a fixing member such as a bolt, for example. Further, the surface in the vicinity of the hole on the long-side surface of the elastic body 10B is in contact with the stopper 11B.

  The stopper 11B has a bolt shape, and one end passes through a hole provided in the elastic body 10B and is fixed to the armature 4, and the other end, which is a head, does not pass through the hole provided in the elastic body 10B. It has a structure that is caught by the elastic body 10B. When the other end of the stopper 11B is hooked on the elastic body 10B, the brake shoe 3 can be held on the armature 4 side while being able to move a small amount.

  In the electromagnetic brake device 1B configured as described above, the A portion can be provided wider than in the past. Therefore, it is possible to visually confirm the wear powder generated on the friction surface between the brake shoe 3 and the armature 4 and the friction surface between the elastic body 10B and the stopper 11B by the brake operation. Further, when it is necessary to remove the wear powder, the discharge operation can be easily performed.

  In addition, by adjusting the bolt mounting position of the stopper 11B, the force acting on the friction surface between the brake shoe 3 and the armature 4 and the friction surface between the elastic body 10B and the stopper 11B is increased or decreased to generate wear powder. Can also be adjusted.

1 Electromagnetic brake device 2 Drum 3 Brake shoe 4 Amateur 5 Core (Built-in electromagnetic coil)
6 Frame 7 Bolt 8 Elastic body 9 Fixing bolt 10 Elastic body 11 Stopper

Claims (5)

In an electromagnetic brake device comprising: a brake shoe slidably contactable with a brake drum; an amateur that supports the brake shoe; and a core that incorporates an electromagnetic coil that sucks the amateur and separates the brake shoe from the brake drum ,
An elastic body provided on the brake shoe;
A stopper provided on the amateur,
The elastic body is
One end of both ends is fixed to the side surface of the brake shoe, and a part of the other end abuts against the stopper, thereby holding the brake on the amateur side. The stopper is
One end of both ends is fixed to the armature, and the other end has a hook structure for hooking the elastic body, and the other end having the hook structure is hooked on a part of the other end of the elastic body. The electromagnetic brake device according to claim 1, wherein the elastic body is held on the amateur side by contact. The elastic body is
L-shaped and plate-shaped,
2. The electromagnetic wave according to claim 1, wherein a short side surface is fixed to a side surface portion of the brake shoe, and a part of the long side surface is held on the amateur side by contacting the stopper. Brake device. The elastic body is
L-shaped and plate-shaped, with one or more holes on the long side surface,
The surface of the short side is fixed to the side surface portion of the brake shoe, and the surface in the vicinity of the hole provided on the surface of the long side passes through the hole and comes into contact with the stopper fixed to the amateur, thereby The electromagnetic brake device according to claim 1, wherein the electromagnetic brake device is held on an amateur side. The stopper is
Has a bolt shape,
One end of both ends passes through the hole of the elastic body and is fixed to the amateur, and the other end which is the head does not pass through the hole of the elastic body and is caught by the elastic body to come into contact with it, The electromagnetic brake device according to claim 4, wherein the elastic body is held on the amateur side.

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