Hydraulic failure method

explain

Electromagnetic reversing valve

Used to control the flow direction of the oil flow in the hydraulic system. According to the structure can be divided into.1. electromagnetic coil 2 body 3 spool 4 push rod spring 6 washer 5

7 valve nut 8 connector plug 9 tin pipe spool type as long as the valve core and the valve body to overcome the friction and restoring spring force can move. The disassembly steps should be 1 valve fixed on the platform, with 2 fixed nut tools will remove.3 coil and white pipe and remove washer,.4 with the pin spool, gently from the body out.

If we have a valve stuck phenomenon found in the use of the valve can, in accordance with the above steps, remove the spool and body with diesel or kerosene to clean, to ensure the valve in the body can only such activities can be.

Two. Relief valve

Used to control and regulate the pressure of the hydraulic system. According to the structure can be divided into 1 3 4 seat body 2 piston spring 5 adjustment handle 6, lock nut disassembly steps should be 1, an overflow valve is fixed on the platform, 2 tools will open with a stick body and the valve seat 3 piston gently from the seat. Take out.

If we find that the use of the overflow valve stuck phenomenon, you can overflow valve

In accordance with the above steps, remove the piston and valve seat with diesel or kerosene clean, to ensure that the piston in the valve seat can only be as active.

Method for finding hydraulic failure:

First, according to the hydraulic fault of hydraulic system in the map to find the hydraulic system diagram analysis and troubleshooting, the main method is to "grasp" -- a power source (pump) and grasping actuator (cylinder and motor), and "even the middle", from the source to execution between components and control components through the pipeline. "Grasping two ends", to analyze whether the fault in the pump, cylinder and the motor itself. "Even the middle" in addition to pay attention to whether the fault analysis of connected line hydraulic components, but also pay special attention to clear transfer system from one state to another state of the work is the use of what kind of control mode, whether the error control signal according to the kind, check one by one, it is necessary to pay attention to between the main circuit and the main circuit and control circuit have no wrong and mutual interference phenomenon, such as mutual interference phenomenon, how to regulate the use of error analysis.

Two, the use of causality diagram to find hydraulic failure

By using the analysis method of cause and effect diagram (fishbone diagram), the failure of hydraulic equipment is analyzed, which can not only find out the primary and secondary causes of faults, but also accumulate the experience of troubleshooting. Causality diagram analysis, which can be used to maintain management and find fault, is widely used.

Three, the use of fault phenomena and causes of failure analysis table to find hydraulic fault

According to the work practice, summed up the fault phenomenon and the cause of the fault correlation table, can be used to find and deal with the general hydraulic fault.

Contributor: Fan Xiutao