The lifting platform is widely used for the transportation and transfer of people and goods. The lifting platform is mainly driven by the pressure of hydraulic oil to realize the lifting function. Its shear fork mechanical structure enables the lifting platform to have a higher stability, a large working platform and a higher load-bearing capacity, so that the high-altitude operation range Larger and suitable for multiple people to work at the same time. When installing the lifting platform, some pressure adjustments are required. Today, I will tell you how the pressure adjustment steps are: (1) Check before commissioning: Open all the manual shut-off valves of the lifting platform system. Open the two one-way throttle adjustment nuts of the system counterclockwise. (2) System main pressure debugging: First, lower the pressure value of the main overflow valve of the system until the lifting platform cannot rise; lower the bridge, adjust and control the pressure value of the lower overflow valve to about 14Obar, and the lifting cage
platform begins to drop. Secondly, continue to lower the lifting platform and increase the pressure value of the main relief valve of the lifting platform system. If the machine cannot rise, please repeat the previous step, slightly increase the pressure of the descending relief valve, and continue the descending action to increase the pressure of the main system: finally, lower the pressure of the control descending relief valve. The main system pressure and the descending relief valve ensure that there is a pressure value. (3) When the descending speed does not meet the requirements, adjust the throttle valve screw until it meets the requirements; it is worth noting that adjusting the hexagon socket bolt clockwise to slow down the descending speed. Continue to observe whether the lifting freight elevator descends smoothly. If it shakes, the pressure of the control descending overflow valve can be slightly increased, and the bridge body does not shake. (4) Check that the joints of each oil pipe meet the requirements and the oil circuit is correct; secondly, adjust the pressure of the main relief valve of the system to the minimum, start the main motor to raise the lifting platform, loosen the exhaust valves of the two oil cylinders slightly, and discharge the system air. Observe that there is oil left, and the exhaust valve can be locked only when there is no air bubble; gradually adjust the pressure value of the main overflow valve of the system, it can be seen that when the lifting platform rises slowly, check whether there is leakage at the exhaust valve plug, if so The sealing ring or exhaust valve plug should be replaced.
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