[plater Cheng mechanically-laid web is achieved formerly] the grab addition as use time, a few spare partses can happen wear away, rustily or ageing phenomenon, and the occurrence meeting of these phenomena is brought to grab such or in that way breakdown, make thereby grab cannot work normally. After grab occurrence breakdown, we are about to be reached through analysis, judgement adopt necessary method to find out malfunctioning place and reason, undertake eliminating to these breakdown next. So, what method undertakes an analysis to breakdown place and reason again? We introduce a kind of simple and easy breakdown to diagnose a method today.
"Hope to hear ask cut " , believe a lot of friends see these 4 words can associate to the method that the doctor of traditional Chinese medicine sees a doctor, nevertheless, the object that we see a doctor is grab. Next, we for say how to should undertake to grab " hope to hear ask cut " .
One, look: Look even if look, want to see engine, view hydraulic pressure system, look walk etc.
Before seeing engine, we should be engine has trouble certainly above all, if diesel engine cannot be started,wait. When seeing engine, want to see the following sides commonly:
1, view fuel system first, see engine whether lack derv, see filter whether need to turn on the water etc.
The attention observes grease segregator water level indicates the position of annulus
2, the n that sees accumulator again is enough, whether does circuit line have scorch, blacken, rupture wait for a phenomenon to appear.
Blame maintenance-free accumulator fluid examination
Maintenance-free accumulator needs to examine observation hole only can
3, see the motor that start whether rotate speed is too low perhaps turn far from.
Engine starts motor
4, look medicinal powder whether is hot system put in the problem, if come loose,sirocco fan damages, fan belt is flabby wait.
Leather belt goes up to spend an examination closely
5, the fume that sees engine is normal.
Engine is not normal fume
Additional, we still should notice to examine air filter to whether appear jam circumstance, whether is engine oil lacked etc.
1, see size arm whether have shaken case, whether to have crack.
The big arm craze that armour friend reveals is nodded
2, see oil cylinder whether have burst leakage oily appearance.
Oil cylinder leakage is oily
3, see hydraulic pressure oil whether have contaminative appearance.
4, see vitta whether have oily appearance of damaged, leakage.
Look walk system when, look walk the system basically looks walk to whether have sideslip appearance, if sideslip phenomenon needs to examine the following aspects:
Walk systematic examination
1, look heavy annulus whether to have wear away.
2, look everywhere whether does bolt have become loose.
3, see pedrail, chain wheel, bring guide pulley to whether wear away serious.
4, see chassis whether have crackle appearance.
Additional, we notice hydraulic pump mixes postmortem to trot along on horseback all right even amount to, saw them whether appear problem.
2, hear: In the doctor of traditional Chinese medicine, hear general component to be mixed to listen smell. When diagnosing grab breakdown, we also need to have these two jobs.
We say smell first, smell is to hear circuit to whether have scorched taste usually, whether does hydraulic pressure oil have a stink, whether to have other peculiar smell. We can come from according to breakdown of these peculiar smell judgement at which place.
Next we say to listen, normal mechanical movement sound has certain rhythm and swing, and stability is more outstanding. Be familiar with grasped this kind of pattern, it is normal to diagnose a machine well and truly to whether work commonly, according to these rules and abnormal noise we can judge the breakdown position that gives a machine. Hear audio time, a respect we are the abnormal knocking that listen to engine, another respect we are the noise that hear hydraulic pressure system.
Abnormal noise has engine the following respects:
1, the knock reputation that the generation inside air cylinder has rhythm.
2, the sound that engine interior issues tower tower.
3, hear heavy and strong knock voice.
4, slight and incisive voice.
5, engine exhaust appears abnormal noise.
Additionally engine interior still can appear a few other noise, for example sound of squeak, the scrape, these position that we should produce according to noise undertake judging, then undertakes having the examination of specific aim.
Abnormal noise has hydraulic pressure system the following respects:
1, oil pump has murmur, because available gas, oil pump joins inside hydraulic pressure oil,be commonly become loose or amlposition, wear away or attaint causes.
2, occurrence noise of hydraulic pressure motor, because motor joins,be commonly become loose or amlposition, wear away or attaint causes.
3, relief valve occurrence noise, because relief valve pressure is exorbitant,be commonly or wear away cause.
Finally, the author should remind is, below essential condition, we still need to listen walk the noise of device and rotator.
3, ask: In the doctor of traditional Chinese medicine, asking is to ask a patient where is uncomfortable. And grab won't talk, how should we ask then? Ask namely actually dig him hand. Ask dig a hand to have the following sides:
Service engineer and machine hand need undertake good communication
1, the place that asks to there is what careless omission in common maintenance, whether does common maintenance have undeserved place.
2, ask to there is what undesirable habit in common operation, these undesirable habits can bring about what problem to appear again.
3, ask grab has what maintenance history,
4, still appear what ask breakdown is to break out gradually.
5, when asking breakdown is to beginning the work, appear, still appear in working process.
4, cut: In the doctor of traditional Chinese medicine, cut the meaning that is feel the pulse, in grab, cutting is the meaning that feel. Use when feeling judgement breakdown, what we basically feel is hydraulic pressure system. So do we need what to place feel?
Through " feel " to hydraulic pressure system pulsatile undertake perceptive
1, the pipeline in feeling hydraulic pressure system or component, saw them whether happen to shake reach concussion phenomenon.
2, feel pump case and fluid casting die, saw them whether appear unusual temperature rise, we can judge the place that breakdown appears and reason according to temperature rise.
3, feel hydraulic pressure motor, oil pump, saw them whether appear join becomes loose or the phenomenon of amlposition. 4, feel bolt and all sorts of close solid component, see the problem that whether they appeared to become loose or damages.
Say above " hope to hear ask cut " the simple and easy diagnostic method that is pair of grab breakdown, to bigger trouble, the breakdown that perhaps judges hard, the instrument with we or need other have the aid of undertakes detecting judging.
Summary: In grab use process, hard to avoid can appear such or in that way problem. Face these problems, master " hope to hear ask cut " judgement method became this one simple and easy breakdown to dig a hand people the basic skill that must possess. This kind of simple and easy breakdown judgement method also can be helped dig a hand people hand-in-hand travel eliminates frequent diagnostic breakdown, assured normal schedule of the job thereby, also promoted work efficiency.
Does everybody dig friend how do you look?
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