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Hydraulic system of spiral welded pipe unit LH-600: Hydraulic system of the delivery machine is composed of oil tank device and power source device. Control valve group cooler and other components, control delivery pressure cylinder and delivery hydraulic motor with the delivery machine to complete the feeding process of the screw welding unit.
Hydraulic system of spiral welded pipe unit LH-600
Operating Procedures:
For the first time, inject clean hydraulic oil from the air filter port to above the middle of the level gauge, screw up the flow rate of the plunger pump, loosen the handle of the reducing valve, throttle valve, speed regulating valve and relief valve, test the accumulator inflation pressure (inflation is 4MPa when leaving the factory) and record the value, then loosen the drain port pipe joint above the plunger pump, and inject clean hydraulic oil from here. After reassembly, point the motor, observe the motor steering from the rear of the motor (pump shaft end), counterclockwise is correct, after the steering is confirmed to be correct, point the motor 3-5 times, confirm no abnormal, start the pump motor, electromagnetic relief valve electromagnet (boost), adjust the system pressure to 6MPa (reference), The electromagnet that controls the hydraulic motor generates electricity, so that the motor rotates forward, and the flow rate of the plunger pump is adjusted to make the speed of the delivery machine slightly greater than the required speed. After locking the plunger pump lock nut, the speed regulating valve is adjusted to make the delivery speed reach the required value.
After the delivery cylinder is fed into the plate, the electromagnet gets electricity, and the cylinder presses down on the plate. At this time, the reducing valve is adjusted to make the pressure gradually increase, and the delivery roller stops when it is increased to no skid. When the speed of the delivery roll decreases, the throttle should be adjusted, after the delivery machine feed into the molding machine plate, depending on the situation to adjust the pressure reducing valve pressure and the main system pressure, so that the force is enough, while the pressure loss is small, the reverse speed of the delivery machine adjustment, after the completion of the adjustment, screw the small throttle valve, let the motor reverse, gradually screw the throttle valve, so that the reversal speed to meet the required requirements.
After the delivery machine is adjusted to work normally, the lock nut of the control valve should be tightened. At the same time, observe the pressure used in the delivery press-down cylinder (pressure reducing valve), check whether the accumulator pressure P storage is consistent with the pressure P cylinder, P storage =0.65-0.9P cylinder. If not, the accumulator should be charged (discharged) after the delivery machine press-down cylinder is unloaded. Note that the accumulator can only be filled with nitrogen and inert gas!
When the conveyor delivers the weld at the interface of the two rolls of plates, it should manually adjust the pressure of the main system at any time, and restore the pressure of the system after the weld has passed.
When the oil temperature in the tank exceeds 55ºC, the cooling water of the cooler should be connected.
Five, maintenance and maintenance:
The hydraulic oil of the system is generally changed about two years according to the oil situation, and the oil suction filter is changed at the same time. Every three months, check the filter element of the return oil filter, and properly clean or change it.
| Model | Specification (mm) |
Coil width (mm) |
Thickness (mm) |
Coil weight (mm) | Capacity (KW) |
| LH-400 | Φ219-426 | 400-750 | 5-8 | 10 | 150 |
| LH-500 | Φ219-529 | 400-800 | 5-10 | 15 | 180 |
| LH-600 | Φ219-630 | 450-1050 | 5-12.7 | 15 | 190 |
| LH-700 | Φ219-720 | 500-1250 | 5-12.7 | 15 | 210 |
| LH-800 | Φ219-820 | 500-1300 | 6-12.7 | 20 | 220 |
| LH-1000 | Φ219-1020 | 500-1300 | 6-12.7 | 20 | 220 |
| LH-1400 | Φ325-1420 | 500-1560 | 6-18 | 30 | 410 |
| LH-1600 | Φ426-1620 | 500-1560 | 6-20 | 30 | 410 |
| LH-1800 | Φ508-1820 | 1100-1600 | 8-25.4 | 30 | 510 |
| LH-2000 | Φ508-2020 | 1200-2000 | 8-25.4 | 40 | 530 |
| LH-2400 | Φ508-2400 | 1200-2000 | 8-25.4 | 40 | 530 |
| LH-3000 | Φ508-3000 | 1200-2000 | 8-25.4 | 40 | 530 |
Hebei Yongyue Electromechanical Equipment Co., Ltd. is a professional high-end cold-bending equipment manufacturer with an annual output of 100 sets of equipment, integrating independent research, production, development, sales and service.
Q: Could you produce the shear line as per our specific requirements?
A: Yes, we are a professional manufacturer specialized in automatic shearing line for more than 10 years, we have a strong design & technical team, we can design and manufacture as your requirements.
Q: What's the MOQ, warranty... ...
A: MOQ: 1 set.
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