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When using the machine that note model, the breakdown that system of hydraulic pressure of the machine that note model may appear is varied. It is group photo of a lot of element put together ah result, disperse sex is bigger. Accordingly, when undertaking breakdown is diagnosed, must analyse to causing the element one by one of breakdown, notice its are immanent connection, find out main contradiction, such ability are solved easily.
Usually, breakdown of generation of system of hydraulic pressure of the machine that note model is not accidental, any breakdown are evolving to be accompanied to be met before big trouble a variety of adumbrate out of order, these adumbrating but reduce:
(1) appears abnormal sound, the sound that waits for place like a powerful person of pump, motor, Wen Liu is abnormal.
(2) occurrence circumgyrate, walk, roll motor of raise hydraulic pressure and crock of each equipment hydraulic pressure operating speed drops reach faint phenomenon.
(Fluid of 3) occurrence gasoline tank drop, phenomenon of oily fluid metamorphism.
(The surface outside component of 4) hydraulic pressure appeared phenomenon of oily fluid leakage.
(5) occurrence oil is lukewarm exorbitant phenomenon.
(Injury of 6) occurrence pipeline, become loose reach oscillatory phenomenon.
(7) appears anxious nucleus odour is waited a moment.
Above these phenomena, in wanting to using a process only attentive and advertent, can hear discovery by the feeling of naked eye observation, hand, nose smell. In real work, people comes through method of this kind of spot just about the first-hand data as analytic breakdown, next according to experience, integrated these first-hand data, undertake concrete analysis to real problem, find out the account that produces breakdown, as soon as possible gives solve. However, in real work, often cannot diagnose the reason that gives generation trouble well and truly, need a few to relapse at this moment, analyse repeatedly namely, check repeatedly, it is till the reason that finds generation fault stop.
In real work, project technology personnel often handles the trouble that appears in hydraulic pressure system by the following measure.
(1) understands a system. When breakdown of occurrence hydraulic pressure of some machine that note model, should understand hydraulic pressure system above all. Want to be familiar with concerned technology data, report namely, understanding liquid gas presses working principle of the system, know the basic structure of all sorts of component and the particular function in the system, current flow can be found out below all sorts of job status. Before inspecting facility, answer to observe working condition of the system first, record necessary technical data, wait like working rate, pressure, discharge, cycle time.
(2) enquires handlers. To operating the handlers of the machine noting model of occurrence breakdown has an inquiry. The character that enquires this equipment and its function maintain the basic appearance when asking for; to enquire this equipment occurrence malfunction, if whether can be hydraulic pump started, systematic oil is lukewarm exorbitant, systematic noise whether too big, whether can hydraulic pressure crock drive load to wait.
(The phenomenon that 3) checks handlers to offer and microscope. To the appearance that handlers raises, through watching rate of appearance reading, job, listening noise, examination oily fluid reachs executive component to whether the method such as misoperation checks; to press flow of the current inside the system next further from gasoline tank ordinal edge loop is searched carefully, record observation knot to stay on time. The oily fluid inside microscope gasoline tank wants when the examination, affirmatory whether bilge enters a system. The regular job; of each component uses influence system the hand is felt, examination oil inlet pipe and high-pressured vitta have change without chest, the piston lever that the installation bolt that; of bate, leak, damaged checks the pipe fittings that controls element each and housing shakes; to check oil and hydraulic pressure crock finally one day. Should notice to have in every pace examination do not have an operation or maintain undeserved phenomenon, in order to discover from this and the breakdown reason of generation.
(4) basis understanding, inquiry, check, the breakdown matter list with the listed and likely data that the examination gets. Should remember well right now, phenomenon of a breakdown may be two plant or the reason of two kinds of above brings about, if carry out component speed to reduce, because hydraulic pump spare parts wears away,the likelihood is, as a result of,also may be of hydraulic pressure crock inside leak increases; to be like again, oil is lukewarm exorbitant, the likelihood is the oil inside gasoline tank the capacity is insufficient, or oily fluid pollution jammed medicinal powder hot side, the pressure that also may be overflow a powerful person is moved exorbitantly.
(5) makes conclusion. List breakdown matter list according to place, press " first easy hind difficult " principle, eduction checks order. Once be checked simply,choose those first check or repair can make equipment returns to normal, so that be inside the shortest time,complete examination work.
(Conclusion of 6) test and verify. Once adopt above measure, find out the machine that note model to produce the account of breakdown, begin proceed to remove trouble. Eliminate breakdown to include to check pressure and discharge with proper test facilities, ravel housing cover board, examine pump, motor and other cell. These experiment examinations are to decide the foundation that component of spare parts, hydraulic pressure changes. Often undertake checking in real work without proper test facilities, be forced to come in order to change the component assembly such as a powerful person of pump, motor, hydraulic pressure at this moment as the significant step that eliminates breakdown.
In the process that search and eliminates breakdown, should serious, careful, discreet, do one's best is accurate, avoid to disassemble blindly component, or the method that uses inappropriate voice handles trouble, lest from this and cause new damage. Divide when necessary, must not disassemble easily component of each hydraulic pressure, because needless, tear open prematurely install the service life that can lower these component.