CN2611342Y

CN2611342Y - Elevator brake

Info

Publication number: CN2611342Y
Application number: CN 03222703
Authority: CN
Inventors: 王有国; 于向前
Original assignee: Guangzhou Hitachi Elevator Co Ltd
Current assignee: Hitachi Elevator China Co Ltd
Priority date: 2003-01-02
Filing date: 2003-01-02
Publication date: 2004-04-14
Anticipated expiration: 2013-01-02

Abstract

The utility model discloses an elevator brake, comprising two sets of oscillating arms hinged on a brake base, a brake disk, two brake arms arranged below both sides of the brake disk and hinged with a draw machine base, a brake scotch, a compression spring coarctate on the brake arm. One end of the oscillating arm is respectively bunted and fixed on a resetting ram on the brake arm, equipping with two sets of independent electromagnetical declutch mechanism which respectively controls the movement of the oscillating arm. The two sets of completely independent mechanical braking execution units of the utility model can improve the assurance coefficient to realize the movement individual control.

Description

Brake device for elevator

Technical field

The utility model relates to a kind of brake equipment that is used for the cage lifter main frame.

Background technology

Along with the development of elevator industry, countries in the world are also more and more higher to the requirement of lift running safety, and the elevator manufacturing of China is also strict more to the requirement of elevator brake with the installation safety standard.Fig. 1 is a present elevator a kind of vertical drg commonly used, it comprise a magnet coil 1, fixed core 2, one moving unshakable in one's determination 3 and servo-actuated action unshakable in one's determination depression bar 4, be hinged on two groups of swing arms 5, brake disc 6 on the drg seat, be positioned at brake disc down either side and two brake control levers 7 of machine bed pivotally attached, brake scotch 8, be pressed on the compression spring 9 on the brake control lever, one end of two groups of swing arms is all compressed by depression bar 4, the other end is then respectively against the push rod 10 that resets that is fixed on two groups of brake control levers.Can produce magnetic field when magnet coil feeds electric current, attract moving iron core 3, it is descending to drive depression bar, the promotion push rod 10 that resets, the pressure that makes left and right sides brake control lever 7 overcome compression spring 9 rotates around pin jointed end, and brake scotch is thrown off with brake disc and is contacted like this, drg declutches, the elevator operation.Under normal condition, when elevator by stopping layer instruction when stopping, the electric current of cutoff solenoid, compression spring force brake control lever to drive brake scotch and press to brake disc, and motor is shut down, simultaneously, the push rod that resets on the brake control lever makes swing arm promote depression bar to reset.Under error state, during as electrical source of power or control power supply dead electricity, just realize braking by compression spring.When if moving iron core and depression bar or swing arm are stuck akinesia for a certain reason, such fault will cause whole drg braking failure or discharge and lose efficacy, and causes the loss of personnel or property.

Summary of the invention

The purpose of this utility model is can improve drg reliability, safety in order to provide a kind of, can realize the brake device for elevator of control respectively that moves simultaneously.

Main technical schemes of the present utility model is: this brake device for elevator comprises two groups of swing arms, brake discs being hinged on the drg seat, is positioned at brake disc down either side and machine bed pivotally attached two brake control levers, brake scotch, is pressed on the compression spring on the brake control lever, swing arm one end is respectively against the push rod that resets that is fixed on the brake control lever, have two groups independently the electromagnetism brake-loosing mechanism control the action of swing arm respectively.

Because the utility model has two groups of independently mechanical braking execution units, when wherein one group of moving iron core, depression bar or swing arm in shoulder to shoulder is stuck akinesia for a certain reason, the brake scotch of this side just can not be embraced the compacting Moving plate, but as long as the opposite side parts do not have above-mentioned fault, brake scotch that just can also this side is embraced the compacting Moving plate, lift car slow down to be descended, until slowly stopping, thus the personal casualty of avoiding or property damage.Two groups of independently mechanical braking execution unit controls respectively that simultaneously can also realize moving.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is existing elevator main brake structural scheme drawing;

Fig. 2 is the structural representation of an embodiment of the utility model;

Fig. 3 is the apparatus structure scheme drawing that declutches of an embodiment of the utility model;

Fig. 4 is the birds-eye view of Fig. 3.

The specific embodiment

Embodiment one

As shown in Figure 2, this brake device for elevator comprise two groups of swing arms 5,5 of being hinged on the drg seat '; Brake disc 6; Be positioned at two brake control levers of brake disc down either side and machine bed pivotally attached 7,7 '; Brake scotch 8,8 '; Be pressed on compression spring 9,9 on the brake control lever ', swing arm 5,5 ' one ends respectively against be fixed on the

push rod

10,10 that resets on the brake control lever ', have two groups independently the electromagnetism brake-loosing mechanism control respectively swing arm 5,5 ' action.Wherein said electromagnetism brake-loosing mechanism comprises an excitation coil 1, is positioned at the fixed core 2 of excitation coil, with fixed core 2 cooresponding two moving unshakable in one's determination 3,3 ' and can distinguish the

depression bar

4,4 of servo-actuated action unshakable in one's determination ', depression bar 4,4 ' respectively compress swing arm 5,5 ' the other end.

Shown in Fig. 3,4, the handle 12 that declutches is installed on the body skin 11 of magnet coil by support 14, and two rollers 13 that are installed on handle 12 fulcrums that declutch are separately positioned on two moving tops unshakable in one's determination.When having a power failure or energising can not open the brake scotch of band-type brake the time, can be by above-mentioned manual brake release, handle 12 clockwise directions that will declutch rotate, by roller promote moving iron core and depression bar descending, brake scotch is declutched.

Embodiment two

In the present embodiment with two moving unshakable in one's determination 3,3 ' to two fixed cores should be arranged, other structure of present embodiment is identical with embodiment one.

Embodiment three

The brake-loosing mechanism of electromagnetism described in the present embodiment comprises two excitation coils; Be positioned at the fixed core of each excitation coil; With the cooresponding moving iron core of fixed core; Can servo-actuated the depression bar of action unshakable in one's determination, depression bar compresses the other end of swing arm respectively.Other structure of present embodiment is identical with embodiment one.

Claims

1, a kind of brake device for elevator comprises the two groups of swing arms (5), (5 ') that are hinged on the drg seat; Brake disc (6); Be positioned at two brake control levers of brake disc down either side and machine bed pivotally attached (7), (7 '); Brake scotch (8), (8 '); Be pressed on the compression spring (9) on the brake control lever, (9 '), swing arm (5), (5 ') end is respectively against the push rod that resets (10) that is fixed on the brake control lever, (10 '), it is characterized in that: have two groups independently the electromagnetism brake-loosing mechanism control swing arm (5) respectively, the action of (5 '), described electromagnetism brake-loosing mechanism comprises excitation coil (1), be positioned at the fixed core (2) of excitation coil, with cooresponding two moving (3) unshakable in one's determination of fixed core (2), (3 ') and can distinguish the depression bar (4) of servo-actuated action unshakable in one's determination, (4 '), depression bar (4), (4 ') compress swing arm (5) respectively, the other end of (5 ').

2, a kind of brake device for elevator according to claim 1 is characterized in that: an excitation coil (1) is arranged in the described electromagnetism brake-loosing mechanism.

3, a kind of brake device for elevator according to claim 2 is characterized in that: corresponding with two moving unshakable in one's determination (3), (3 ') also have two fixed cores.

4, a kind of brake device for elevator according to claim 1 is characterized in that: two excitation coils (1) are arranged in the described electromagnetism brake-loosing mechanism, fixed core (2) is arranged in each excitation coil.

5, according to claim 2 or 3 or 4 described a kind of brake device for elevator, it is characterized in that: the handle that declutches (12) is installed on the body skin (11) of magnet coil by support (14), and two rollers (13) that are installed on the handle that declutches (12) fulcrum are separately positioned on two moving tops unshakable in one's determination.