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Shenyang German Machine Hydralic Transmission Machinery Co., Ltd.

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How to ensure the normal operation of the coupling?

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How to ensure the normal operation of the coupling?

Release date:2018-10-22 Author: Click:

The coupling is equipped with electric actuators through manual operation. Manual or automatic control of electric actuators, to adjust the position of the catheter, change the degree of fluid filling in the coupling chamber, thereby changing the output speed of the coupling and output torque.

The speed range of the coupler varies with the working machine. Matching with centrifugal machinery, speed range 1-1/5, matching with constant torque machine, speed range 1-1/3.

Repair and maintenance of coupling parts

Check oil level regularly and replenish oil in time.

After the first operation of the new machine, the oil suction pipe filter should be removed and cleaned for 500 hours.

Combined with working machine downtime for maintenance, regular cleaning of oil pump and filter.

Regular inspection of oil quality, timely replacement of qualified oil.

If you need to empty the oil in the coupling box, you can screw down the oil drain hole wire at the lower part of the input and output of the box, or load the globe valve at the oil drain hole.

How to ensure the normal operation of the coupling?

The pump wheel of the hydraulic coupling is not equal to the blade number of the turbine. The purpose is to avoid the vibration caused by the periodic impact of the fluid pulsation on the working wheel. The blades of the coupler are generally made in plane radial direction, and the manufacturing is simple. The working wheels are made of aluminum alloy, and some are made by stamping and welding. The latter method has lower cost and lighter quality.

Half of the blades of the hydraulic coupling and the turbine have a piece or corner cut off at the end. This is because the blades are radially arranged, the distance between the blades at the inner edge of the working wheel is smaller than that at the outer edge. When the liquid flows from the outer edge of the turbine through the inner edge of the pump wheel, the liquid is squeezed.

Torque limit hydraulic couplings should be used as far as possible. The upper limit of transfer power of the torque limiting fluid coupling corresponds to 80% filling liquid, and the lower limit of transfer power corresponds to the 50% filling rate. Because the performance curve of high liquid filling rate is better than that of low liquid filling rate, and the unstable region of the coupling is narrowed when the liquid filling rate is high, the smaller size and high impact coupling should be chosen as far as possible, instead of the lower liquid filling rate and larger size coupling. Hydraulic coupling has no function to protect motor voltage drop overload, so long-term low voltage motor matching coupling should pay attention to overload protection. Some data show that the voltage drops by 10% on the same day, and the motor is overloaded while the coupling is not overloaded when the motor is running at full load, so it will not cause heating spray and protect the motor. The solution is to reduce the liquid filling rate of the coupling, reduce the output torque, so that it is possible to protect the motor from burning when overloaded.

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Coupler fittings

Coupler fittings

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