Jiaozuo brake

Understand the hydraulic brake system

The hydraulic brake is usually a locked motor with a brake wheel. It is a three-phase 380V small motor. When the motor needs to work, it can be connected in parallel with the motor through a contactor. If it is not a starting motor or a variable frequency motor, the working power can be connected to the motor to supply power to the brake motor. The motor rotates to drive the impeller, which uses hydraulic oil to push the hydraulic rod and open the brake. The holding brake is usually used in a constant holding state and only releases when powered on, so the electric control is generally simple. As long as the power supply of the thruster is connected in parallel with the power supply of the motor, the adjustment, maintenance, and use of the brake are carried out. Each traction machine is equipped with two brakes. When one brake fails to function for some reason, the other brake still has sufficient braking capacity

1. Adjust the nut and adjust its position to control the armature inside the brake body to always be in a suitable position, maintain a reasonable working stroke, and avoid hitting the armature and manual opening cam during closing, causing noise;

4- Control the stroke of the brake opening force, and under the condition of large opening clearance, control the stroke of the brake arm and the working clearance between the brake shoe and the brake wheel; 5- Compress the spring and adjust its compression star to control the size of the braking force. Excessive compression can cause difficulty in opening the brake body; 7- Compress the nut and adjust its position to control the magnitude of the braking force;

9- Top rod screw, controlling the degree of fit between the brake shoe and the brake wheel (the better the fit between the brake shoe and the brake wheel, the greater the braking force formed under relative conditions, and the lower the working noise); Specific production model:

YT1, ED, YTD.BYT1, BED, ED2, MYT1, ZED, DEd series electric hydraulic thrusters

JZ, MW, TJ2, ZWZA, ZWZ3 series electromagnetic brakes

YWZ, YWZ3, YWZ4, YWZ5, YWZ8, YWZ10, YWZ9, YWZ13, YW, YWL series electric hydraulic brakes

BYWZ, BYWZ3, BYWZ4, BYWZ5, BYWZ8, BYWZ10, BYWZ9, BYWZ13, BYW series electric hydraulic brakes

QP, CQP, QPC, CQPL, QPL, PDA series pneumatic caliper disc brake

DCPZ250, DCPZ300, DCPZ400 series electromagnetic caliper disc brake

YPZ2, YPZ3, YPZ1, YP series arm disc brake

SPZ symmetrical brake arm disc brake

SBD, SB series safety brakes

SH, ST series hydraulic failure protection brake

DADH, ADH, ADP series hydraulic direct acting brakes

SE series electromagnetic failure protection brake

SP series pneumatic failure protection brake

YFX, YDGZ, YLBZ, Series Windproof Wedge Brakes

YQP hydraulic disc brake 6 types of brakes

13- Pull rod, which determines the formation of braking force and controls the large opening gap;

2. 3, 8, 10- Lock nuts to prevent loosening of each adjustment screw after system action after adjustment is completed, which may cause system changes; 17 scale is just a reference mark for the system to restore the original braking force. Preparation before adjusting the brake: 1. Switch the elevator to maintenance mode

2. To_ Open the lift car up to allow the counterweight to fall on the support

3. Check the transformer voltage of the braking circuit to ensure that the AC voltage meets the schematic requirements. 4. Check and confirm that the safety circuit is effective. 5. Cut off the main power supply and execute the locking procedure

6. Press the emergency stop switch and/or other emergency stop switches of the control cabinet 7. Remove the machine protective cover 8. Clean the main unit

9. Check and ensure that the brake arm and all other moving parts are not rusted, and all moving parts must be able to move and rotate freely. If necessary, disassemble the brake and thoroughly clean and lubricate it. Reassemble the brake in its original state after disassembly.

Attention: The locking procedure must be strictly followed. Before starting the brake adjustment work, ensure that there is no electrical or mechanical energy present. Ensure that the brake hub and brake shoes are not contaminated with grease and lubricants.

Adjustment of brake opening stroke: refer to Figure 11, loosen nut 3 and screw 4.

2. The top rod 4 must completely leave the screw 14 of the brake core.

3. Rotate screw 4 clockwise until it is in contact with top rod screw 14, then continue to rotate clockwise for 1 turn (pitch 2mm) to push the brake top rod and move the armature inward by 2mm. Adjust the other side using the same method.

4. Power on the brake, and at this time, the large stroke of the brake top rod moving outward from the inside is 4mm. If the stroke is small, rotate the top rod screw 4 clockwise to increase the stroke; otherwise, decrease the stroke counterclockwise. Tighten nut 3 afterwards. Observe whether there is a sound of the armature hitting the end cover when opening the brake. It is advisable to ensure that the armature does not hit the end cover and that the gap is small.

5. If there is a sound of impact, rotating nut 1 counterclockwise can increase the stroke of the iron core, while rotating nut 1 clockwise can shorten the stroke of the iron core. Attention: Observe whether the brake switch of the brake can be fully closed and opened, otherwise adjust the corresponding top rod screw.