CN2041461U

CN2041461U - Braking motor

Info

Publication number: CN2041461U
Application number: CN 88217358
Authority: CN
Inventors: 王涵生
Original assignee: DAFA ELECTRICAL MACHINERY PLAN
Current assignee: DAFA ELECTRICAL MACHINERY PLAN
Priority date: 1988-07-22
Filing date: 1988-07-22
Publication date: 1989-07-19

Abstract

The utility model relates to a braking motor with an additional dc electromagnet. The elementary structure of the braking motor is that a motor with a cylindrical rotor is adopted, and a brake with an automatic compensation and braking gap device is matched, which are used to solve the problem that the braking gap is difficult to be adjusted after abrasion of a friction set in the existing braking motor. Such new braking motor can be widely used for industries of a hoisting machinery (such as an electric hoist, a single and a double beam crane), a machine tool, textiles, foods, and print; the braking motor is more suitable for machinery which is required to frequently start and brake and accurate park.

Description

Braking motor

A kind of brake motor that relates to additional DC electromagnet.

Brake motor in the prior art can be divided into the not brake motor of the brake motor of additional electrical magnet (as cone rotor brake motor and other magnetic-type brake motor) and additional electrical magnet (as yEJ series electromagnetic braking threephase asynchronous) by its version.From the operating principle of these motor and structure as can be known, in use after the wearing and tearing of the fastness in the brake, brake is just inoperative, need manually adjust, at set intervals, need to adjust a brake clearance, and this adjustment amount is wayward, if excesssive gap, braking moment reduces, the easy brake failure of motor.And the gap is too small, the motor operating current is excessive, the easy heating burnout of motor, and this adjustment has been generally level and has regulated, adjustment process often needs repeated multiple times, and the restriction that is subjected to the level adjusting simultaneously makes the gap not reach optimum state, and this is concerning the user, also be very big burden, especially problem is more outstanding when high-altitude application.On the other hand, in the brake apparatus as the cone rotor braking motor, its trig loop is to make of asbestos material, the humidity difference, and expansion situation difference is also influential to brake clearance.

The purpose of this utility model is to make a kind of novel brake motor, and particularly a kind of brake clearance is the brake motor of the additional DC electromagnet of compensation automatically.

Brake motor of the present utility model is to realize goal of the invention by following design.Basic structure is the motor of employing garden cylindrical rotors, mixes the brake with automatic compensation brake clearance device.This brake apparatus is taked to cover at motor rear end and is adorned a fixedly brake disc, and dress rotating disk and electromagnet three parts are formed on the motor shaft.On rotating disk, have 12～24 holes, lay the ellipse garden shape brake block of making of powdered metallurgical material (being brake pad) in the hole.Between one end face of electromagnet and the rotating disk armature is housed, contacts by back-moving spring and tripping spring between armature and the electromagnet, tripping spring is contained in the centre of electromagnet casing.The end face bearing of other end and motor is by Bolt Connection, and electromagnet, armature, fixedly the rear end cap of brake disc and motor passes through Bolt Connection, and spacer is arranged on the bolt.2～6 back-moving springs and taper hole cover are housed on electromagnet casing, and the taper ratio of taper hole cover is 1:3, and the taper hole cover is made up of lid, carriage, back-up ring, is equipped with in the cover and adjusts spring, steel ball, packing ring.The magnet spool power supply is the direct current that motor power is obtained behind over commutation.

After the brake motor energized, work of electromagnet, adhesive armature, compression brake spring and back-moving spring are thrown off the brake block plane on armature plane and the rotating disk, the motor rotation, when cutting off the electricity supply, electromagnet discharges armature, and tripping spring and back-moving spring promote armature and brake block plane contact by the elastic force of self, by friction catch motor is stopped the rotation, the size of its frictional force is by the material character decision of the elastic force and the rubbing surface of tripping spring and back-moving spring.After brake pad wearing and tearing, the gap between armature and the brake pad plane is strengthened, but the brake block on the rotating disk is contacted with fixing brake disc because motor braking promotes armature by the elastic force of back-moving spring and tripping spring self, lean on friction catch.So the gap that produces after the wearing and tearing of brake block (being brake pad) is compensated automatically by the elastic force of tripping spring and back-moving spring, plays the effect of automatic adjustment brake clearance.In addition, brake block is to make with powdered metallurgical material, and is not easy to wear, long service life, even after the serious wear, it is also extremely convenient to change installation.

The taper hole cover is installed on the electromagnet, is its role is to protect the suction of electromagnet to tend towards stability, that is the effect by the taper hole cover, make gap between armature and the electromagnet all the time in a definite scope.This is owing to be equipped with in taper hole cover and adjust spring, packing ring and steel ball, and cover is outer to be equipped with that back-up ring realizes.

According to the brake motor that such scheme is made, both solved the drawback that exists in the existing brake motor system, have following advantage again:

1, the basic structure of this motor is the motor of employing garden cylindrical rotors, is furnished with the brake of automatic adjustment brake clearance device of the present invention, makes easily.

2, brake has the automatic compensation gap device, does not need artificial adjusting play in the brake block length of life.

3, brake block adopts powdered metallurgical material to make, and is easy to manufacture, long service life, and it is convenient to install and change.

4, the electromagnet coil power supply in the brake uses the same power supply of motor, and is easy to use.

Now be described in detail a most preferred embodiment of the present utility model in conjunction with the accompanying drawings.

As shown in Figure 1, the brake motor of additional DC electromagnet is by motor 1, back end cover for motor 2, fixedly brake disc 3, rotating disk 4, armature 6, electromagnet, tripping spring 14, taper hole overlap 17 and form.Have 24 holes on the rotating disk, the ellipse garden shape brake block made from the FM-201G powdered metallurgical material is installed in the hole.Electromagnet is made up of shell 10, coil 8, magazine 9 and taper hole cover.The taper hole cover is made up of taper hole cover 17, carriage 18, steel ball 21, packing ring 22, adjustment spring 23, lid 24.On electromagnet, divide equally 4 back-moving springs 7 and 4 taper hole covers are housed.Electromagnet, armature, rotating disk, fixedly brake disc is fixedly connected by bolt 25 and back end cover for motor 2, spacer 26 is housed on the bolt, the electromagnet center has the hole, lay tripping spring 14 in the hole, one end of tripping spring contacts with armature, and the other end overlaps 15 with the adjustment on the end face bearing 11 and contacts.Motor 1 only is according to the needs that brake apparatus is installed with the motor of general garden cylindrical rotors, its structure especially rear end cap is done some adjusted design, the direct current of electromagnet coil power supply for adopting the same power supply of motor to obtain after rectification.

When motor access power supply, work of electromagnet, adhesive armature 6 throws off the plane of armature and brake block 5, the motor rotation.When cutting off the electricity supply, electromagnet discharges armature, promotes armature by tripping spring with the elastic force of back-moving spring and contacts with brake block, by friction catch motor is stopped the rotation.

Claims

1, a kind of by motor 1, the fixing brake motor of the additional DC electromagnet formed of brake disc 3, rotating disk 4, armature 6, electromagnet, it is characterized in that rotating disk is contained on the motor shaft 12, fixedly brake disc 3, armature 6, electromagnet casing 10 are connected with back end cover for motor 2 by bolt 25, have the hole on the rotating disk, brake block is installed in the hole, back-moving spring 7, tripping spring 14 and taper hole cover are housed on the electromagnet casing.

2, the brake motor of additional DC electromagnet according to claim 1 is characterized in that having on the rotating disk 12～24 holes, lays the ellipse garden shape brake block that the FM-201G powdered metallurgical material is made in the hole.

3, the brake motor of additional DC electromagnet according to claim 1 is characterized in that electromagnet is made up of shell 10, coil 8, and the first-class branch of shell is equipped with 4 back-moving springs, 7,4 cover taper holes covers 17.

4, the brake motor of additional DC electromagnet according to claim 1, it is characterized in that the taper hole cover by taper hole cover 17, steel ball 21, packing ring 22, adjust spring 23, lid 24 and carriage 18 and form, taper hole overlaps on 17 the outer ring back-up ring 16 is housed.

5, the brake motor of additional DC electromagnet according to claim 1 is characterized in that tripping spring 14 is installed in the center of electromagnet casing 10.

6, the brake motor of additional DC electromagnet according to claim 1 is characterized in that the direct current that is that the electromagnet coil power supply adopts the same power supply of motor to obtain behind over commutation.

7,, it is characterized in that the taper ratio of taper hole cover is 1:3 according to the brake motor of claim 1 or 4 described additional DC electromagnet.