Electromagnetic braking device for elevator hoister

A technology of electromagnetic brake and winch, which is applied in the direction of winch device, etc., can solve the problems such as the impact of the room, and achieve the effect of improving stability and facilitating replacement

Active Publication Date: 2014-07-09
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In this type of electromagnetic brake device, the collision noise generated by the collision between the brake shoe and the brake drum during operation becomes a source of noise, especially in an elevator without a machine room where the hoist is directly installed in the hoistway. In the middle, it will have a great impact on the elevator car and the living room on each floor of the building

Method used

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  • Electromagnetic braking device for elevator hoister
  • Electromagnetic braking device for elevator hoister
  • Electromagnetic braking device for elevator hoister

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0028] figure 1 It is a sectional view showing the electromagnetic brake device according to the first embodiment of the present invention. figure 2 yes figure 1 enlarged sectional view of the .

[0029] The installation purpose of the electromagnetic braking device 1 is, for example, to brake the lifting body of an elevator. Such as figure 1 As shown, there are brake shoes 2 capable of sliding contact with the brake drum of the hoist, an armature 3 supporting the brake shoe 2, a brake spring 4 that presses the armature 3 to push the brake shoe 2 in the braking direction, The electromagnet core 6 and the rod 7, the electromagnet core 6 has the electromagnetic winding 5, which overcomes the pushing force of the brake spring 4 and attracts the armature 3, so that the brake shoe 2 leaves the brake drum, and the rod 7 is integrally arranged on the electromagnetic Iron core 6 to guide the displacement of armature 3.

[0030] In the electromagnetic braking device 1 of the firs...

no. 2 example

[0040] image 3 It is a sectional view showing the electromagnetic brake device according to the second embodiment of the present invention. Such as image 3As shown, there is a bolt body 18 that is detachably threadedly fitted to the end of the rod 7 on the brake shoe side, and an elastic body 9 disposed between the bolt body 18 and the armature 3. The elastic body 9 The contact area with the armature 3 can be changed as the screw body 18 advances and retreats.

[0041] A male thread 18 a is formed at the front end of the bolt body 18 , and the male thread 18 a is screwed into a female thread 17 a formed on the rod 7 . In addition, the diameter of the middle part 18b of the bolt body 18 is smaller than the diameter of the guide hole 3a formed on the armature 3, and has a width larger in diameter than the middle part 18b and slightly smaller than the guide hole 3a on the head 18c side. Section 18d. The elastic body 9 is formed of a rubber ring having an oval shape in cross...

no. 3 example

[0043] Figure 4 It is a sectional view showing the electromagnetic brake device according to the third embodiment of the present invention. Such as Figure 4 As shown, it is equipped with a bolt body 28 that is detachably screwed to the end portion of the rod 7 on the brake shoe side, and an elastic body 9 disposed between the bolt body 28 and the armature 3. The elastic body 9 The contact area with the armature 3 can be changed as the screw body 28 advances and retreats. Reference numeral 26 denotes an electromagnet core.

[0044] The front end of the bolt body 28 is formed with a male thread 28a, and the male thread 28a is threadedly engaged with a female thread 27a formed on the rod member 7 . In addition, the diameter of the middle portion 28b of the bolt body 28 is smaller than the diameter of the guide hole 3a formed on the armature 3, and has a wider portion on the head 28c side with a diameter larger than the middle portion 28b and slightly smaller than the guide h...

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PUM

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Abstract

The invention provides an electromagnetic braking device. In the hoister of the elevator, the retaining force between an elastic member and an armature can be maintained at a proper level and the elastic member can be conveniently replaced. The electromagnetic braking device (1) includes a brake boot (2) being in slide contact with a brake drum, an armature (3) for supporting the brake boot (2), a brake spring (4) for pushing the brake boot (2) in the braking direction by pressing the armature (3), an electromagnetic iron core (6) and a rod member (7). The electromagnetic iron core (6) overcomes the pushing force of the brake spring (4) to attract the armature (3), so that the brake boot (2) leaves away the brake drum, the rod member (7) is arranged in the armature (3) to guide the armature (3) to displace, the electromagnetic braking device (1) further includes a bolt body (8) and an elastic body (9), the bolt body (8) is detachably in threaded engagement with the end, at one side of the brake boot, of the rod member (7), the elastic body (9) is arranged between the bolt body (8) and the armature (3), and the elastic body (9) can change the contact area with the armature (3) along with the spiral feeding and withdraw of the bolt body (8).

Description

technical field [0001] The present invention relates to an electromagnetic braking device installed on hoisting machines of elevators and the like. Background technique [0002] In the conventional hoisting machine of an elevator, in order to perform braking reliably, a non-excitation actuation type electromagnetic brake device is used. An armature supported, a brake spring that presses the armature to push the brake shoe toward the braking direction, an electromagnet core that attracts the armature against the urging force of the brake spring to separate the brake shoe from the drum, and A rod that guides the displacement of the armature. [0003] In this type of electromagnetic brake device, the collision noise generated by the collision between the brake shoe and the brake drum during operation becomes a source of noise, especially in elevators without a machine room where the hoist is directly installed in the hoistway. In the process, it will have a great impact on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66D5/06B66D5/30
Inventor 小野哲志五十岚章智伊藤正信
Owner HITACHI LTD
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