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长臂挖掘机体系有数的两大拦阻

日期:2018-08-17   源头:http://www.degradedijital.com/
1. 行走跑偏
1. walking deviation
该挖掘机发作行走跑偏弊端,在确定行走马达技能环境正常、履带松紧度调停妥当的环境下,作如下排查:
When the excavator has run off the track, the following checks are made to ensure that the running motor is in normal condition and the track tightness is properly adjusted:
(1) 查察中心反转讨论
(1) check the center reverse connector.
中心反转讨论处油道很多,相互之间约莫勾搭。先拆开 2 个行走马达的油管,然后堵逝世其间 1 个马达油管;再倡议倡议机,拉动堵逝世油管马达的换向阀,发现油液压力过低,而没有堵逝世的液压马达的油孔出油。由此鉴定中心反转讨论的油道密封不好。互换中心反转讨论的密封件,弊端不见
There are many oil channels at the center reverse junction, which are simply colluded with each other. First, remove the tubing of two walking motors, and then plug the one motor tubing in between; then start the engine, pull the reversing valve plugging the tubing motor, found that the hydraulic pressure is too low, and no plugged hydraulic motor oil hole oil. It is concluded that the oil seal of the central reverse connection is not good enough. Replace the seal of the center reverse connector. It's not seen.
(2) 查察组合阀
(2) check the combination valve.
先查察行走速率慢一侧的行走组合阀。拆开其限压阀上的 2 根油管,用堵头堵住出油口,倡议倡议机,拉动有堵头组合阀的行走应用手柄,检测油压正常;再拆开另一侧行走组合阀上的 2 根油管,再次倡议倡议机,观察其限压阀的 2 个油孔无油液流出,由此区分弊端不在组合阀。
First look at the walking speed slow side of the combined valve. Remove the two tubing on the pressure limiting valve, plug the outlet with a plug, start the engine, pull the walking handle of the combination valve with a plug to check the normal oil pressure; then remove the two tubing on the other side of the combination valve, start the engine again, investigate the two oil holes of the pressure limiting valve without oil flowing out, thereby distinguishing the hair. The disease is not in the combination valve.
加长臂挖掘机租赁
2. 斗杆油缸弹性痴顽有力
The 2. bucket cylinder is slow and elastic.
该长臂挖掘机在作业进程中出现斗杆油缸弹性痴顽有力弊端,经剖析作如下排查:
The bucket-rod cylinder of the long-arm excavator shows slow elasticity and weakness during its operation. The analysis is made as follows:
(1) 查察密封件
(1) check seals.
若斗杆油缸活塞等处密封件失效,将构成高压腔与高压腔的液压油因内泄而互窜。先松开高压腔的油管,放失腔内液压油,然后倡议倡议机给高压腔内写入压力油,未见液压油从高压腔的油管中流出,标明斗杆缸活塞密封件密封精良。
If the sealing parts of bucket rod cylinder piston and other places fail, the hydraulic oil of low pressure cavity and high pressure cavity will be channeled each other because of internal leakage. First loosen the oil pipe in the low pressure chamber, release the hydraulic oil in the chamber, and then start the engine to write the pressure oil into the high pressure chamber. No hydraulic oil flowed out of the oil pipe in the low pressure chamber, indicating that the piston seal of the bucket rod cylinder is outstanding.
(2) 查察安全吸油阀
(2) check the safety suction valve.
斗杆油缸作业回路上装有 2 个安全吸油阀,若其间某个安全吸油阀的单向阀失效成为双向直通,约莫在溢流阀溢流压力很低时,都市构成该侧油腔的油压不克不及树立,压力油直接颠末单向阀或溢流阀泄入油箱,使斗杆缸方法痴顽有力致使不克不及作业。
There are two safety suction valves in the working circuit of the bucket rod cylinder. If one of the safety suction valves fails to be two-way through during the operation, the oil pressure in the side chamber may not be set up when the overflow pressure of the relief valve is very low, and the pressure oil will be discharged directly into the tank through the one-way valve or the overflow valve, thus slowing down the action of the bucket rod cylinder. Unable or even unable to work.
安全吸油阀若发作上述弊端,在应用手柄处于中立方位停机后,斗杆油缸会自动痴顽回落。但是该斗杆缸没有发现此种表象,阐发弊端不在安全吸油阀。
If the safety suction valve has the above problems, the bucket rod cylinder will slow down actively after the operation handle stops at the neutral position. But the bucket cylinder did not find such a representation, indicating that the fault was not in the safety suction valve.

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