TP1 Mine Hoist Mining Machine Spare Parts With Hydraulic Station Disc Brake

1. Product description of disc brake of hoist in mining machine spare parts

The lifting system is the throat of mine production, and the brake device is the last and the most critical safety guarantee system of the hoist, and its main realization form is disc brake. In the process of mine production, disc brake shoe and brake disc frequently friction to control the normal operation of hoist, once the brake shoe failure, will lead to a serious accident hoist. Disc brake is used for working brake and emergency brake in mine hoist, and its drive and control are completed by a separate hydraulic station. The brake can replace the function of locking device, each brake is equipped with a stop valve, when repairing the brake, can be carried out one by one. Disc brake is composed of brake shoe, disc spring, hydraulic components, lining plate with cylinder, sealing ring and brake body. It is powered by a butterfly spring and released by pressure oil from a hydraulic station.

2. The new TS series disc brake device in mining machine spare parts has the following technical characteristics:

(1) Use cylinder rear disc brake to avoid hydraulic oil pollution brake disc.

(2) The main oil circuit adopts the built-in integrated oil circuit system to supply oil to each brake to reduce oil leakage.

(3) The external pipeline adopts fine rolled pipe and catch-sleeve joint to truly achieve zero solder joint.

(4) The use of non-asbestos environmental protection brake shoe.

(5) The exposed surface of brake is nickel plated.

3. TP1- series Hoist Technical parameters:

4. Notes for use and maintenance of disc brake of hoist in mining machine spare parts, common faults and handling methods

(1) Every year or after the 5*10 power of the 5 brake action, should check the butterfly spring group;

Inspection Method: First, the brake is in full braking state, and pressure oil is gradually poured into the hydraulic tank, so that the pressure in the hydraulic cylinder of the brake is slowly increased. Each brake is released one by one under different pressures, and the release pressure of different brake shoes is recorded. The difference between the highest oil pressure and the lowest oil pressure should not exceed 10% of the maximum working pressure. Otherwise, the butterfly spring in the brake with the lowest oil pressure should be replaced;

(2) Brake shoe and lining board link method improvement: in the past the factory of brake shoe and lining board connection with six copper screws, which not only reduce the contact area to reduce the service life of the brake shoe brake shoe, and copper screw loose in use is easy cause scratches phenomenon of brake disc, the scene to see suggest inserting type, the plane into the seam allowance of the brake shoe insert inside lining board,

(3) Common faults and handling methods

1) The brake does not open: the reason is that the hydraulic station has no oil pressure or insufficient oil pressure, the hydraulic station should be checked;

2) The brake can not brake: the reason may be the damage of the hydraulic station or the brake, which is stuck. The hydraulic station and the brake should be checked for repair

3) Long braking time, long sliding distance and small braking force may be caused by:

A. Overloading and overspeed use

B. The brake shoe clearance is too large

C. Oil on brakes and brake shoes

D. butterfly spring is faulty, find out the cause and take treatment measures

4) Uneven wear of brake shoe and fast wear: the reason is that the brake is not properly installed, the brake disc is too large, or the main shaft is too large. Find out the reasons and deal with them respectively

5) Loose brake and slow braking, the reasons are as follows:

A. Air in hydraulic system

B. The brake shoe clearance is too large

C. Seal ring damage, find out the cause and repair