Analysis and solutions to common faults of scrap steel gantry shear hydraulic pump station

Abnormal and unstable flow in the scrap steel gantry shear hydraulic station refers to three common phenomena: no flow entering the actuator, insufficient flow supply to the actuator, and excessive flow entering the actuator. So how should we deal with this problem?

1. Phenomenon:  There is no flow in the scrap steel gantry shear hydraulic station
(1) The electromagnet of the reversing valve of the equipment above the hydraulic station is loose and the coil is short-circuited. This can directly replace the reversing valve, or repair it.
(2) The hydraulic oil in the hydraulic station is contaminated and the valve core is stuck. Replace all hydraulic oil with clean and uncontaminated hydraulic oil. The valves that are stuck at the same time can only be replaced by the reversing valve or repaired.
(3) M and H type functional slide valves have no direction change. Reverse them and readjust them.

2. The flow rate of the scrap steel gantry shear hydraulic station is too low
Low hydraulic station flow is a common problem caused by unstable hydraulic station flow. There are many reasons.
(1) The pressure of the relief valve or unloading valve that controls the flow of the hydraulic oil pump in the hydraulic station is adjusted too low. Just turn the pressure up.
(2) The bypass control valve in the hydraulic station is not closed tightly. Either replace the valve or check the flow control circuit of the hydraulic station.
(3) The volumetric power of the hydraulic oil pump decreases. This can replace the hydraulic oil pump and drain the air inside the hydraulic oil pump at the same time.
(4) The hydraulic station has serious internal leakage. This is mainly because the various components of the hydraulic pump station, such as the hydraulic oil pump, hydraulic valves, oil pipes, motors, oil circuit blocks, and oil tanks, are not tightly connected, and the seals must be replaced at the same time.
(5) The normal adjustment of the variable pump of the hydraulic station is invalid. Replace the hydraulic oil pump.
(6) The pipeline of the hydraulic station is too lost along the way. You can replace this with a larger oil pipe and increase the pressure of the pump.

3. The flow rate of the scrap iron gantry shear hydraulic station is too high
(1) The flow control equipment of the hydraulic station is adjusted too high. This is exactly the opposite of what I said above. If the setting is too high, just turn it down.
(2) The normal adjustment of the variable pump of the hydraulic station is invalid. There is an error in the design of the hydraulic station, which can only be replaced or repaired.
(3) The type of hydraulic oil pump and motor speed are incorrect. Replace with a hydraulic oil pump with a high flow rate and a motor with high speed.

To sum up, when the hydraulic actuator cannot work normally, it is necessary to use the working parameter of flow to find the cause of the problem and eliminate it accordingly.