DZMF series (electrified) DC electromagnetic brake is an electrified brake. The product features compact structure, reliable performance, convenient installation and adjustment, large braking moment and long service life.
DZMF series DC electromagnetic brake and Y2 series motor form YEJF series electromagnetic brake three-phase asynchronous motor. The motor has beautiful appearance, fast braking and accurate positioning. By means of automatic control, special braking functions are realized and applied to various transmission machinery.
Take the motor as an example, when the motor works, the brake is not working. When the motor stops working, the brake will be energized. At this time, the electromagnet produces strong electromagnetic force, overcomes the tension of the reset spring steel sheet, sucks the friction plate, contacts with the friction sheet, and generates friction moment, so that the rotating parts brake quickly and achieve accurate positioning. When power loss occurs, the friction plate is restored to its original position by resetting the tension of the spring steel sheet. At this time, the rotating parts are free from the restraint of the friction braking moment, and the motor shaft can rotate freely.
1. The overall protection level reaches IP23.
2. The cooling mode of brake is self-cooling.
3. The insulation grade is F.
Supplies of Matching Parts and Components
For the convenience of customers to use DZMF series DC electromagnetic brake, our company not only provides matchable rear cover, junction box, windshield and other accessories, but also provides the corresponding specifications of the rotor shaft processing drawings, as long as processing according to our company's drawings, you can produce YEJF series brake motor.
Note: Specifications DZMFO5-DZPF80 are all three mounting holes.DZMF160 and DZMF200 are six mounting holes (figure) It includes three dotted holes.
1. The schematic drawings of each specification are as follows:
2. Requirements for Air Gap Value of Brake
3. Check the air gap
As shown in the structural diagram, the moving distance between the electromagnet 5 and the friction plate 7 is called the air gap (δ). The normal working air gap (δ) does not exceed the specified working air gap value. The motor is adjusted within the initial working air gap range when it leaves the factory. After a period of operation, the air gap (δ) becomes larger due to the wear of the friction lining, which will affect the normal pull-in and braking effect of the brake. Therefore, after the motor is used for a period of time, the air gap (δ) becomes larger. , According to the air gap value, select the size of the feeler gauge, and check the size of the air gap (δ). When checking, you can directly plug the feeler gauge into the air gap (δ). If it is inserted, it means that the air gap (δ) is too large and needs to be adjusted.
4. Adjustment of air gap
Loosen the outer hexagonal screws 12 (three for DZMF05-20, four for DZMF40 and above), and use two outer hexagonal screws 12 to screw into the disassembly process screw hole of the fixed bushing 11, push out the fixed bushing 11, and follow The combination of the friction plate and the friction plate seat is also loose. Select three feeler gauges according to the initial working air gap value and insert them into the air gap (δ) marked in the figure. The three feeler gauges are evenly distributed at 120°. Use a wooden hammer to knock the fixing bush 11 in the direction of shaft extension. The bushing 11 is matched with the taper inner hole of the friction disk seat to fix the friction disk assembly, and then the outer hexagonal screw 12 is tightened. When tightened, the friction disc assembly moves out, and the feeler gauge will loosen accordingly and can be pulled out. Note that when the wooden hammer hits the fixing bush 11, it must be tightened, otherwise when the outer hexagon screw 12 is fixed, the friction disc assembly will move too much and the air gap (δ) will become larger, so we are choosing feeler gauge Coordinate with the method of debugging.
If there is no standard feeler gauge for air gap adjustment, iron sheets of similar thickness can be used instead.
|Examination site and method
|Brake does not suck
|(1) Use a multimeter to measure the resistance of the excitation coil to see if it is disconnected;
(2) Whether the DC input power of the brake is normal;
(3) Whether the brake lead wire connector is loose;
(4) During installation, the air gap was adjusted incorrectly.
|(1) Repair or replace the yoke if there is a broken wire;
(2) If it is abnormal and needs to be repaired, enter it according to the requirements of the nameplate;
(4) Readjust the air gap.
|Brake failure and brake failure
|(1) The friction plate is worn, the working gap is enlarged, and the torque is reduced;
(2) The friction plate is damaged.
|(1) Re-adjust the gap;
(2) Replace with new parts.