Specification for assembly and commissioning of hydraulic station

A: detailed reading of the hydraulic system schematic and appearance

Two: cleaning and installation of semi-finished products

Tank cleaning process

1: use of waste silk attack on all parts of the installation installation hole on the tank

2: the use of tools to the inside of the oil tank welding and cleaning

3: use the vacuum cleaner to dust, and finally with the dough adhesion

Valve block processing

1: detailed inspection of each valve hole whether there is no burr removed, if there should be timely treatment

2: check the valve block processing holes and the valve block is chamfered, if not timely treatment, and pay attention to observe the surface roughness and flatness of the valve block, to ensure that the surface of the valve block without scars

3: the use of high pressure cleaning fluid for each valve hole cleaning, should be done on the six side of the cleaning, with the finger hole on the valve to check whether there are iron and dirt

4: the use of high-pressure air guns on the valve hole repeated blow to ensure that the valve block without excess liquid

Pipeline cleaning

1: the use of high pressure cleaning liquid pipeline cleaning

2: blowing with an air gun

3: because the pipeline has been done in the process of cleaning the paint should be handled with care

Component installation requirements

1 parts: running vibration in the assembly process thread to add elastic pad (for example: the pump and the motor frame is connected with the screw pump, oil pump bracket and the connecting thread, pay attention to motor cushion with two nut fixed in the assembly angle of the mounting hole in the bolt) after assembly of motor oil pump at to turn the wheel motor to check whether the connection (qualified detection method; according to the pump rotation direction in a circle, feel whether efforts have weight, if there is a check between the pump and motor concentricity problems.)

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2: in the installation of valve should be O type ring check valve is compression margin, whether can good cover the valve block hole, bolt installation valve meets the bear pressure level (usually 12.9) in order to detect the valve bolt is too long, in the assembly to a screw with the hand shake, if don't put the first loosen screw second equally hard rock, in this order until all bolts tested, then tighten the diagonal (strength is basically the same) Note: the valve should be placed on the side of the valve, the sealing surface should not be on board vehicles and tools

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3: the O ring assembly and combination pad in the pipeline, the seal must ensure the smooth surface, the installation should pay attention to the screwed sealing to tighten the fixing position (for example: pipe clamp should be screwed sealing ring connections to pipe clamp)

4: bulkhead in the imperial joint, with raw materials should be in a clockwise direction starting winding about second teeth wrapped around 5 to 6 laps.

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5: after the completion of the assembly to check in detail whether the principle of hydraulic pressure and appearance requirements, inspection can be carried out after the commissioning system

Three: hydraulic station commissioning

To fully understand the principle of hydraulic pressure, we must first know the maximum pressure and set

Whether the test pressure can be adjusted

Inspection before test

1: in the debugging of the system before the start, check valve handle is released (such as: relief valve, throttle valve etc.) to check all the valve is opened (for example, the oil inlet valve, pump oil return valve, the total oil return port valve, pipeline ball valve system) Note: start when the first move the power switch is turned to the right to view the pump normal debugging

Process of testing machine

1: the hydraulic system for the "cycle" filter about half an hour or more

2: connect the test cylinder, the system requirements and performance test, for each valve

The performance of each test, note: in system debugging pressure should be increased

Slowly adjust the pressure of the system, such as abnormal should be immediately shut down for inspection

Handle

4: in the debugging process of the system of the seal for detailed observation, see whether there is oil leakage phenomenon, if there should be timely treatment

Troubleshooting process

1: in the removal of valves or piping and other accessories, should first remove the pressure and then remove the fault (Note: paint as far as possible not to destroy)

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Four: after the system debugging

1: put the oil into the oil tank and the cooler and high pressure filter and other internal oil is also clean

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2: the throttle valve all open

3: wipe the system clean, notify the paint room paint again