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Splitter hydraulic system and control
The hydraulic system is the core part of the splitter. The structure and performance of the system have an important impact on the safety, reliability and productivity of the splitter. The hydraulic system of the GD series hydraulic splitter is as described above. The splitter has two upper and lower cylinders. The upper cylinder has three actions: fast forward, splitting and retreating. Accordingly, a two-pump hydraulic system was designed, see Figure 4.
The operation process of the system: firstly, the low-pressure oil pump 4 is started (at this time, the electromagnetic valve 6 is de-energized, and the middle position of the oil passage of the upper cylinder 1 is cut off, and the piston of the upper cylinder 1 is already at the extreme position of the upper end thereof), the lower cylinder 2 of the rodless cavity oil, the piston rod jacks up the workbench, so that the lower blade is hidden, so that the processed stone is placed on the workbench, and the position is placed; press the fast forward button, activate the high pressure oil pump 5, and make the solenoid valve 6The power is shifted to the left, and the two oil pumps work at the same time, and the oil is supplied to the rodless cavity of the upper cylinder 1 to push the upper cutting tool to rapidly descend; when the upper cutting tool is pressed against the stone, the oil pressure of the high pressure pump 5 rises rapidly and the chamber unloading valve 3 is adjusted. The pressure is fixed, the valve 3 is started, the low pressure pump 4 is unloaded and idling, the rodless cavity of the lower cylinder 2 is returned to the oil, the table is sunk, and the lower cutting tool is pressed against the stone. At this time, only the high pressure small flow pump 5 works, and the upper cutting tool is driven slowly. Work in, press the stone, split it; after the stone split, the upper blade triggers the lower stroke switch (also press the quick-return button), so that the solenoid valve 6 is shifted to the right, and the pressure of the high-pressure pump 5 drops rapidly. Under the set pressure of valve 3, reset it; stop unloading, two oil pumps The oil is supplied to the rod cavity of the cylinder 1 to retreat the blade, until the upper stroke switch is actuated, so that the pump 6 is simultaneously powered off, the upper cutting tool is stopped at the upper limit position, and the table is jacked up by the lower cylinder 2, The processed stone is removed, a work cycle is completed, and the splitter is in the beginning of the next work cycle.
Correct operation of the Hydraulic Rock Splitter
Proper use and standard operation are guarantees to improve the efficiency and quality of the hydraulic splitter. The operator's hydraulic splitter must carefully read the machine's instruction manual to understand the function of each part of the machine in strict accordance with the operating procedures.
4.1 Operation method of secondary disintegration of large stone
When using a hydraulic splitter to perform secondary disintegration of a large block, first check whether the various parts of the equipment are installed, whether the joints are firm and reliable, and whether the components of the equipment are normal. Then follow these steps:
4.1.1 Drilling a rock on a rock with a rock drill. The diameter of the drill depends on the outer diameter of the working part of the wedge assembly of the hydraulic splitter. The size of the wedge assembly depends on the size of the rock at the site. The rock is large and the diameter is large. The wedge assembly is also small in diameter and has a small rock volume, and a small diameter wedge assembly is used. The drilling depth is generally 300-400mm. When drilling, note that the orientation of the ore hole should be perpendicular to the surface where the hole is located. The size of the hole should be compatible with the diameter of the splitter. The depth of the hole is 110-150 mm deeper than the length of the wedge assembly. It is strictly forbidden to punch inclined holes and shallow holes, and should not be punched in places where the force is not good.
4.1.2 Insert the splitter into the hole and adjust the split direction as needed.
4.1.3 Start the pump station.
4.1.4 Control the reversing valve so that the piston extends and splits. After the rock splits a small fine line, the reversing valve is reversing, the piston rod and the inner wedge are retracted, and the splitter is rotated to make it Rotate an angle with the starting crack direction and then split again so that a rock can be disintegrated into multiple pieces.
4.2 multiple splitting method
When the hydraulic splitter is used for large-scale splitting, it must be drilled with a rock drill to divide the aggregate. When the rock drill is punched, each splitter needs to be equipped with two sets to improve the production efficiency of the splitter. Put a single-head hydraulic splitter in the pre-drilled hole, start the motor, when the hydraulic cylinder piston rod pushes the wedge downward movement, pay attention to observe, when you see the crack along the hole in the stone (also from Observe on the pressure gauge, when the pressure rises to a certain value, suddenly slams down.) The reversing valve is reversed. At this time, the wedge moves in the opposite direction. When it is reset, the chopper is rotated by an angle, and the cleaving process is repeated. Multi-directional splitting can be carried out in one hole to split the stone into multiple pieces, reducing the workload of drilling.