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What is the reason for the blade falling on the hydraulic shearing machine?

Views:51     Author:Site Editor     Publish Time: 2020-06-16      Origin:Site Inquire

The Reasons for  blades falling on hydraulic shears:

 

1, The hydraulic shearing machine may not be equipped with a hydraulic control check valve. You can install a superposition type to try it;

 

2, The cylinder of the hydraulic shearing machine has internal leakage, and the close search seal ring can be replaced;

 

3, It is possible that the back pressure valve of the hydraulic shearing machine does not work. Check whether the back pressure valve is normal.

 


Why the hydraulic shear oil pump cannot start?

 

1, The start, stop or emergency stop buttons of the hydraulic shear oil pump are damaged;

 

2, The overload protection thermal relay is damaged;

 

3, The AC contactor coil of the hydraulic shear is open or damaged;

 

4, Loose or damaged wire ends of the three-wire AC circuit;

 

5, The oil pump motor of the hydraulic shearing machine is damaged or the connection head is loose and falling off.

 

Installation of soft starter for hydraulic shearing machine

 

1, Carefully check the main circuit and control circuit of the soft starter of the hydraulic shearing machine to see if there is any wiring error.

 

2, Set the switch S1 on the front panel of the soft starter of the shear to select the connection mode of the motor to the "external" position of the motor.

 

3,  According to the ABB soft starter product manual, the standard parameters in the basic settings of different applications, set the start ramp time knob on the front panel of the soft starter to 10 seconds and the start current limit knob to 3 times.

 

4, After the main circuit of the hydraulic shearing machine is energized, the control system gives a soft start signal, and the main motor of the shearing machine starts. In order to obtain the best starting parameters, the experiment can be repeated.

 

5, The start ramp time of the soft starter is set to 6 seconds, and the start current limit is set to 2.8 times.


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