CN2474511Y

CN2474511Y - Elevator main machine brake device

Info

Publication number: CN2474511Y
Application number: CN 01235801
Authority: CN
Inventors: 黄善康
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-05-14
Filing date: 2001-05-14
Publication date: 2002-01-30
Anticipated expiration: 2011-05-14

Abstract

The utility model discloses an arresting device for an elevator host machine. The utility model has two mutually independent groups of exciting components, and realizes brake and releasing actions of the arrester through a push bar which pushes two groups of arresting components arranged on the two sides of an arresting drum. The utility model has reliable operations, which improves the running security of the elevator.

Description

A kind of elevator main brake equipment

The utility model relates to a kind of brake equipment that is used for elevator main.

The elevator main drg has horizontal and vertical two kinds of forms, and high speed or the load-carrying big main frame bigger for power then often adopt vertical drg.As shown in Figure 1, this electromagnetic brake has an excitation element 8, this excitation element comprises magnet coil 1, with the push rod 3 of moving armature 2 action, decide armature 2 ', this drg also comprises two groups of " L " shape push rods 4, brake wheel 10, the lower end that is positioned at the brake wheel both sides and the support pivotally attached brake control levers 7, the brake shoe 9 that are hinged on the drg support, is pressed on the compression spring 5 on the brake control lever, two groups of " L " shape push rod one ends are the push rod 3 in the excitation element 8 all, and the other end is then respectively against being fixed on two groups of bolts 6 on the brake control lever 7.When the magnet coil in the excitation element 81 feeds electric current, can produce magnetic field, and attract moving armature 2, drive push rod 3 to descending, promote with it against left and right two groups of " L " shape push rods 4, " L " shape push rod rotates around the axle center, and compressing with it against bolt 6, the pressure that makes left and right brake control lever 7 overcome compression spring 5 rotates around the lower hinge end, brake shoe 9 contacts with brake wheel 10 disengagements like this, drg loosens, the elevator operation.Under normal condition, when elevator by stopping layer instruction when stopping, feeding the failure of current of magnet coil, magnetic field diminishes, at this moment, compression spring 5 forces brake control lever to drive brake shoe and presses to brake wheel, and motor is stopped operating.Bolt 6 on the brake control lever 7 resets " L " shape push rod 4 promotion push rods 3 simultaneously.Under error state, during as electrical source of power or control power supply dead electricity, just realize braking by compression spring 5.And if moving armature or push rod 3 or " L " shape push rod 4 are stuck for a certain reason, during akinesia, such fault will cause whole drg braking failure or discharge and lose efficacy, thereby causes casualties or property damage.

The purpose of this utility model is in order to provide a kind of two groups of separate excitation elements that have, the elevator main brake equipment that reliable operation, safety improve.

The utility model main technical schemes is: this elevator main brake equipment comprises brake wheel, two groups of brake shoes, the brake control lever that links to each other with brake shoe, two groups of " L " shape push rods, is pressed on the compression spring on the brake control lever, " L " shape push rod one end is against the bolt that is fixed on the brake control lever, two groups of separate excitation devices are arranged, the push rod on it respectively with " L " shape push rod of brake wheel both sides against.

The utility model has two groups of fully independently excitation element and power elements, one group of excitation element is controlled a group actor spare, like this when the moving armature in the set of pieces, push rod or " L " shape push rod are stuck akinesia, the brake shoe of this side just can not be embraced the pressure brake wheel, as long as another set of pieces does not have above-mentioned fault, just can also lean on its brake shoe to embrace the pressure brake wheel, lift car is slowed down descend, until the ground that slowly falls back, thus the personal casualty of avoiding or damage to property.

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

Fig. 2 is the brake structural scheme drawing of an embodiment of the utility model;

Fig. 3 is the structural representation of hand release;

Fig. 4 is the lateral plan of the release gear of Fig. 3.

As shown in Figure 2, brake control lever that the utility model comprises brake wheel 10, two groups of brake shoes 9, link to each other with brake shoe 97, two groups of " L " shape push rods 4, be pressed on the compression spring 5 on the brake control lever 7, " L " shape push rod 4 one ends are against the bolt 6 that is fixed on the brake control lever 7, two groups of separate excitation devices 8 are arranged, the push rod 3 on it respectively with " L " shape push rod 4 of brake wheel 10 both sides against.

As shown in Figure 3, Figure 4, camshaft 14 is installed on the lid 13 of excitation device 8 by supporting 15, and handle 11, two cams 12 are connected with camshaft 14, cam 12 respectively with two groups of excitation devices 8 in push rod 3 against.When energising can not be opened the brake shoe of band-type brake, can the handle anticlockwise direction be pulled like this, force left and right two push rods 3 descending, force brake shoe to break away from brake wheel by cam 12 by above-mentioned hand release.

Claims

1, a kind of elevator main brake equipment, comprise brake wheel (10), two groups of brake shoes (9), the brake control lever (7) that links to each other with brake shoe (9), two groups of " L " shape push rods (4), be pressed on the compression spring (5) on the brake control lever (7), " L " shape push rod (4) one ends are against the bolt (6) that is fixed on the brake control lever (7), it is characterized in that: two groups of separate excitation devices (8) are arranged, the push rod on it (3) respectively independently with " L " shape push rod (4) of brake wheel (10) both sides against.

2, a kind of elevator main brake equipment according to claim 1, it is characterized in that: camshaft (14) is installed on excitation device (8) lid (13) by supporting (15), handle (11), two cams (12) are connected with camshaft (14), cam (12) synchronously respectively with two excitation devices (8) in push rod (3) against.