The maintenance of hydraulic pressure system method and measure

Oil of the 1 hydraulic pressure when cheering must filter add note, cheer a tool to answer reliable cleanness. Cannot cheer speed to rise and the filter that take out gasoline tank cheers a place. Cheer personnel to should use clean glove and coverall, in case solid impurity and fiber impurity drop oil in. 2.

2 when maintaining, disassemble hydraulic pressure gasoline tank cheers the place such as vitta of lid, filter lid, test hole, hydraulic pressure, yang Chen should keep away from when causing systematic oil duct to expose, disassemble place wants just can open after complete cleanness first. When if disassemble,hydraulic pressure gasoline tank cheers a lid, first eliminate gasoline tank builds the clay all around, after screwing off gasoline tank to build, cleared remain is in of joint place sundry (lest waterlogging enters gasoline tank,cannot rinse with water) , the ability after affirming cleanness opens gasoline tank to build. When if need to use,wiping material and hammer, should choose what do not drop fiber foreign matter to wipe material and stroke face the special hammer of adherent balata. Canal of glue of hydraulic pressure component, hydraulic pressure wants to be cleaned seriously, blow with high-pressured wind after working, assemble. Choose pack core of in good condition quality goods filter (inner packing attaint, although filter core is in good condition, likely also and feculent) . Filter is cleaned at the same time when oil change, the application before installing filter core cleans material serious cleanness contamination of ministry of filter carapace insole. 2.

The clear wash of system of 3 hydraulic pressure washs oil to must be used use the hydraulic pressure oil with same brand with systematic place, oil is lukewarm it is between 80 ℃ of 45 ～ , take away the impurity in the system as far as possible with large flow. Hydraulic pressure system should clean above 3 times repeatedly, after be being cleaned every time, the system gives off his entirely when the heat that take the advantage of oil. Clean end to clean filter again, change add after new strain core pour new oil. 3 prevent air and water to inbreak 　 of hydraulic pressure system 3.

1 prevent air to inbreak hydraulic pressure system contains cubage comparing to be 6 ～ in often pressing oil of the hydraulic pressure below normal temperature the air of 8 ％ , when pressure is reduced air is met from inside oil free comes out, bleb burst makes hydraulic pressure component " cavitation erosion " , generation noise. Much air enters oily lieutenant general to make " cavitation erosion " phenomenal aggravate, hydraulic pressure oil is constrictive increase, the work is not steady, reduce work efficiency, executive component occurrence job " creeping " wait for undesirable consequence. Additional, air still can make hydraulic pressure oil oxidizes, quicken oily metamorphism. Prevent air to inbreak should notice the following: 1, maintain and should press after oil change random " operation instruction handbook " the regulation removes the air in the system, ability works normally. 2, the oil absorption nozzle of hydraulic pressure oil pump must not show oily side, oil absorption pipeline must sealed and good. 3, the sealed Ying Liang of axis of oil pump drive is good, should notice to change should use when the place oil seal " double lip " quality goods oil seal, cannot use " odd lip " oil seal is replaced, because " odd lip " oil seal can one-way seal oil, do not have the function that seals gas. After this unit ever had fork-lift truck of ZL50 of a Liu Gong to heavy repair, hydraulic pressure oil pump appears successive " cavitation erosion " oil level of noise, gasoline tank rises advanced breakdown automatically, repair a process via inquiring hydraulic pressure oil pump, the oil seal misapplication that discovery is axis of drive of hydraulic pressure oil pump namely " odd lip " oil seal be caused by. 3.

2 prevent water to inbreak excessive moisture content is contained in oil of hydraulic pressure system, can make intensity of metamorphism of emulsification of rustily, oily fluid, lube film drops hydraulic pressure element, quicken mechanical wear. Besides wanting to prevent moisture to inbreak when maintenance, notice oil storage bucket even need not when, should screw cap, best convert is placed; The oil with old water content wants via filtering for many times, every filter one secondary changes the filter paper of stoving, when detecting without special apparatus, on the iron plate that can drip oil to burn heat, appear without steam and burn to just can be added instantly note. 　 of the note in 4 exercise 4.

1 mechanical exercise wants soft peace to arrange mechanical exercise to should avoid crude, generate concussion negative charge necessarily otherwise, make mechanical failure frequency is sent, shorten greatly service life. The concussion bear of the generation when exercise, make mechanical structural member inchoate on one hand wear away, rupture, broken, make the generation in hydraulic pressure system pounds pressure on one hand, concussion pressure can make attaint of hydraulic pressure component, oil seal and high-pressured vitta connect and glue are in charge of again pressure close be in premature invalidation to leak oily or a powerful person of cartridge igniter, overflow is frequent behavioral oil is lukewarm rise. My unit ever bought an UH171 newly to shovelling grab, the every other in exercise 4 ～ vitta of 6 days of Doumen is about to leak oily or dissilient, vitta is the pure quality goods of random entrance, do not have quality problem via detecting. Pass spot observation, discovery leaves for Doumen, when shutting bump be caused by of spacing piece, doorcase strongly. Want to avoid generation effectively to pound bear: Must carry out operating rules strictly; Hydraulic pressure a powerful person leaves, shut cannot pass too suddenly fast; Avoid to make equipment component moves to arise to be bumped strongly to ultimate position; The hydraulic pressure equipment that did not pound a function cannot use equipment (the bucket that is like grab) object of violent concussion exercise in order to achieve broken goal. Still have a notable problem: Operation hand should keep stable. Have certain difference because of the free space of every equipment control system, of join place wear away level is different its clearance is consequently different also, the size that engine and hydraulic pressure system exert oneself is endless also and same, these elements gifted the individual character of equipment. Use the operation hand of this equipment to fumble seriously only, amend oneself operate movement in order to get used to the individual character of equipment, after the course works for a long time, ability nurturance accords with the good operation of equipment individual character be used to. General and mechanical industry insists to decide a person to decide engine system, this also is one of elements. 4.

The 2 sound that hydraulic pump and overflow a powerful person always should note in wanting to notice cavitation erosion and overflow noise work, if hydraulic pump appears " cavitation erosion " noise, after classics exhaust indelible, should find out the ability after the reason removes trouble to use. The start when if some carries out component to be in,doing not have bear is slow, accompany have sound of overflow of overflow a powerful person, answer to stop machine overhaul instantly. 4.

3 when carrying out shift changing rule strictly to spend machinery of park of driver of hand over to the next shift, the safety when wanting to make sure carry on driver is checked and examination arrive exact oil level. System whether whether does leakage, join become loose, whether are piston lever and canal of hydraulic pressure glue contused, the low-pressure oil inlet pipe of hydraulic pump joins oil level of whether reliable, gasoline tank is proper etc, it is the key that carry on driver checks to hydraulic pressure system. Often press type gasoline tank to check blowhole of clean gasoline tank even, maintain its expedite, in case air hole jams create gasoline tank vacuum, it is difficult to cause oil absorption of hydraulic pressure oil pump and attaint. 4.

The working temperature of the systems of 4 oily lukewarm hydraulic pressure that keep appropriate is controlled commonly be between 80 ℃ of 30 ～ is advisable (100 ℃ of dangerous temperature ≥ ) . The oily lukewarm exorbitant meeting of hydraulic pressure system brings about: Oily viscosity is reduced, cause leak easily, efficiency drops; Lube film intensity is reduced, wear away mechanically quickly; Generate carbide and silt Cha; Oily fluid oxidation quickens oleaginous aggravation; Glue of oil seal, high pressure is in charge of premature ageing to wait. Pass to avoid temperature tall: Do not want long-term overload; Notice radiator carbon fin is not polluted by oil, with dustproof earth adherent influence comes loose hot effect; The oily amount that keeps enough comes loose at oily loop with benefit hot; Burning hot summer does not want round-the-clock work, should keep away from midday high temperature time. Oil is lukewarm too low when, oily viscosity is big, fluidity is poor, resistance is great, work efficiency is low; When oil lukewarm under 20 ℃ when, motor of hydraulic pressure of easy attaint of take a sudden turn, a powerful person, conduit. Right now need undertakes warming-up runs, starting engine, carry idle for nothing fast movement after 3 ～ 5min, increase engine rotate speed with middling speed accelerator, operate handle makes the any movement of equipment (like grab Zhang Dou) to ultimate position, maintain 3 ～ 5min to make hydraulic pressure oil warms up through overflow. If oil is lukewarm lower need to increase warming-up movement time appropriately. 4.

Atmospheric pressure of gasoline tank of 5 hydraulic pressure and the gasoline tank of control pressure type that oil measures should notice in the job gasoline tank is baric at any time, its pressure must maintain in random " operation instruction handbook " inside formulary limits. Pressure is too low, oil pump oil absorption is not worth easy attaint, pressure is exorbitant, can make leakage of hydraulic pressure system oily, cause cartridge igniter of low-pressure oil path easily. To the equipment after maintenance and oil change, after the air in discharging a system, should press random " operation instruction handbook " condition of examination oil level, stop the machine in the place of level off, engine checks oil level afresh after flameout 15min, give when necessary compensatory. 4.

Should prevent to fly in exercise of 6 other notes fall the component such as vitta of lever of oil cylinder of block blow hydraulic pressure, piston, hydraulic pressure. On piston lever if bit is wounded, should use oilstone general bit in time all round arris edge abrasion, destroy the seal unit of piston lever in case, leaking can continue to use below oily circumstance. Stop continuously machine the equipment in 24h above, before start, want to the oiling in hydraulic pump, in case hydraulic pump works to grind and damage. 5 maintain regularly at present systems of some project machine hydraulic pressure installed the note intelligent unit, certain to hydraulic pressure system hidden trouble has this unit caution function, but its monitor limits and degree to have certain limitation, so the examination of hydraulic pressure system maintains should maintain the intelligent unit result that monitor and regular examination be united in wedlock. 5.

1250h examination maintains the attachment on examination filter mesh, if the metal is pulverous too much, often indicating oil pump wears away or oil cylinder pulls a crock, to this, must the ability after diagnose takes corresponding step switchs on the mobile phone. If discover mesh attaint, bilge is accumulative, want to change in time, when necessary at the same time oil change. 5.

No matter how should filter core state all change,2500h examination maintains, because be aware of the petty attaint circumstance of filter core hard by naked eye, if long high temperature exercise still should change ahead of schedule appropriately filter core. 5.

31000h examination maintains clean filter, change filter core, clean hydraulic pressure gasoline tank, change hydraulic pressure is oily. Time of oil change of exercise of long-term high temperature should shift to an earlier date appropriately. Of course, if can be passed oleaginous detect the analysis will coach oil change is most of economy, but should notice to lengthen use oil, every other 100h should detect, so that seasonable discovery changes,deteriorate oily. 5.

47000h and 10000h examination safeguard hydraulic pressure system to need to be detected by professional, undertake necessary adjustment and maintenance. According to practice, motor of entrance hydraulic pump, hydraulic pressure must heavy repair after working 10000h, otherwise disrepair of dyne of hydraulic pump, horse may damage, it is the destruction to life sex to hydraulic pressure system. CNC Milling CNC Machining