Regulations for Trial Operation of Hydraulic Hoist

1. Inspection before trial operation:

(1) All sundries in the door slot should be clean and clean to ensure that the gate and pull rod are not blocked.

(2) The frame should be firm. For those fixed by welding, check whether the weld can reach the request. For those fixed by anchor bolts, check whether the nut is loose.

(3) The individual components and equipment in the electrical circuit should stop debugging, and should conform to the relevant rules in GB1497.‍

2. When the oil pump is started at one time, the overflow valve of the oil pump should be fully opened, and the oil pump should not be abnormal for 30-40 minutes.

3. After the oil pump is idling normally, while monitoring the pressure gauge, gradually tighten the overflow valve to fill the pipeline system with oil. The air should be purged when filling the oil. After the pipeline is filled with oil, adjust the oil pump overflow valve so that the oil pump runs continuously for 15 minutes at 25%, 50%, 75%, and 100 of its working pressure. There should be no vibration, noise, and excessive temperature rise.

4. After the above experiment is over, adjust the oil pump relief valve to discharge oil when the pressure reaches 1.1 times the working pressure. There should be no violent vibration and noise at this time.

5. The start valve of the oil pump valve group should generally act within 3 to 5 seconds after the oil pump starts to rotate to load the oil pump, otherwise the spring pressure or the diameter of the fuel saving hole should be adjusted.

6. When there is no water, the lifting gate should be manually operated once to check the deceleration of the buffer installation and whether the gate is jammed, and record the gate fully open time and oil pressure value.

7. Adjust the cam plate of the master controller so that the electrical contacts of the master controller are connected. When disconnected, the position of the gate should meet the requirements of the drawing, but the actual opening of the water filling valve on the door should be adjusted to be less than the design opening of more than 30mm. Adjust the height indicator so that its pointer can correctly indicate the position of the gate.

8. When closing the gate quickly at a time, while operating the solenoid valve, be prepared to close the valve manually to prevent the gate from falling too fast.

9. Lift the gate. Within 48 hours, the settlement of the gate due to the oil leakage of the piston oil seal and the pipeline system should not exceed 200mm.

10. After the manual operation experiment is qualified, the automatic operation experiment can be stopped. During the experiment of lifting and fast closing the gate, record the gate lifting, fast closing, buffering time and the current reservoir water level and oil pressure value. The fast closing time should conform to the design rules.