3Ton Hydraulic Orange Peels Grabs

3Ton Hydraulic Orange Peels Grabs Working Principle

Turn on loop I:

When the hydraulic grab bucket motor is running, the hydraulic pump pumps the hydraulic oil from the fuel tank. When the grab needs to be opened, the hydraulic oil flows through the check valve through the check valve to the rod chamber of the cylinder. At the same time, the pressure oil opens the hydraulic control check valve back to the oil port, and the oil in the rodless chamber of the oil tank flows into the oil return pipe, and returns to the oil tank through the oil return filter. The hydraulic grab is gradually opened while the cylinder rod is retracted to the cylinder.

When the hydraulic grab motor is off, the check valve and the pilot operated check valve lock the oil pressure in the cylinder to prevent the hydraulic grab from automatically closing.

Closed Cycle II:

When the electro-hydraulic cactus grab motor is running, the hydraulic pump pumps the oil into the pressure pipe, operates the electric control box, and the hydraulic oil enters the rodless cavity of the cylinder through the check valve and the pressure pipe. At the same time, the pressure oil will open the liquid control check valve control oil passage, so that the hydraulic oil in the cylinder chamber of hydraulic grab passes through the pressure pipe and the hydraulic control check valve, and flows back to the oil tank through the oil return pipe and the oil filter.

1T, 2T, 3T 5T Hydraulic Grab Technical Data

Slags Handling Cactus Grab Application

Hydraulic Grab Maintenance

l .Oil change and liquid level check

The first oil change of the grabs should be performed after 500 hours operating time from the first successful commissioning. In the future, the oil will be changed after 1000 working hours. After the above 2 steps oil changes of hydraulic grabs, the oil will be changed once a year (working hours are 8-10 hours a day).

The medium selection, generally when the environment temperature is above 0, chooses YA-32~YA-64 hydraulic oil (original 20# -40#)，and if the temperature is lower, which mean temperature near to 0℃ and above 0℃ , chooses the oil grade smaller is better. conversely chooses oil grade bigger. If the working environment temperature is below 0 C, low coagulated hydraulic oil or aviation hydraulic oil should be selected. The Viscosity range of oil should be 10 - 33 cm.

In the process of hydraulic grabs oil change, firstly put the grab in the open state, horizontally on the ground, open the vent hole (ie screw out the oil measuring rod), then screw off the oil drain plug, release the oil in the fuel tank, drain the oil After the plug is cleaned, reinstall it well. The new oil poured into the tank must be filtered. If condition is available, use filter is better. If filter is not available, you can use the attached oil filter of the grab. After the tank is filled, the oil filter and the oil measuring rod should be installed well. Before the grab is closed, oil level checking is necessary.

The hydraulic grabs oil level checking requires the grab to be placed in the open state. The grab must be placed horizontally on the ground, the highest and lowest oil levels are read on the oil measuring rod. Too much oil will cause overpressure in the fuel tank. Too little oil will cause the hydraulic system and the series-excited DC motor to rotate too high, which may cause damage to the oil pump and motor.

When the hydraulic grab fuel tank needs to be replenished, be sure to fill the same type of oil in the fuel tank. Do not use some other types of oil.

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