全自動攪拌車建筑工程中使用多的一種專用車，主要組成部分是底盤和上裝罐體，在車輛行駛的過程中，罐體是勻速轉動的，而罐體的轉動是依靠液壓系統來實現的，液壓系統中的重要組成部分就是液壓馬達，因為它的使用頻率高，使用環境較差，所以偶爾也會出現一些故障，那液壓馬達常見的故障有哪些呢？

A kind of special vehicle widely used in the construction of fully automatic mixer truck. Its main components are the chassis and upper tank. During the driving process of the vehicle, the tank rotates at a constant speed, and the rotation of the tank is realized by the hydraulic system. The hydraulic motor is an important component of the hydraulic system. Because of its high frequency of use and poor use environment, some failures occasionally occur, What are the common faults of hydraulic motor?

故障一：供油量不足導致輸出轉速和輸出轉矩低

Fault 1: Low output speed and torque due to insufficient fuel supply

分析原因及辦法：供油液壓泵吸油口過濾器堵塞，此時可清洗濾油器；油液鉆度過大，此時可更換適合的油液；軸向或徑向間隙過大等原因等造成，此時要研磨定子或其他有關零件，使軸向間隙符合要求。

Analysis of causes and solutions: the filter at the oil suction port of the oil supply hydraulic pump is blocked, and the oil filter can be cleaned at this time; If the oil drill is too large, the proper oil can be replaced; If the axial or radial clearance is too large, grind the stator or other relevant parts to make the axial clearance meet the requirements.

故障二：液壓馬達的原動機功率或轉速不當導致輸出轉速和輸出轉矩低

Fault 2: Improper power or speed of prime mover of hydraulic motor leads to low output speed and torque

分析原因及辦法：原動機功率不匹配，此時需要更換原動機，使之與液壓泵功率匹配；原動機轉速低于額定轉速，此時可選用轉速滿足要求的原動機。

Analysis of causes and solutions: the power of the prime mover does not match. At this time, the prime mover needs to be replaced to match the power of the hydraulic pump; If the speed of prime mover is lower than the rated speed, prime mover meeting the requirements can be selected.

故障三：各連接處密封不嚴，有空氣混入

Fault 3: All connections are not tightly sealed and air is mixed

辦法：檢查和緊固各連接處，提高密封性能。

Solution: Check and tighten the joints to improve the sealing performance.

故障四：工作介質污染，液壓馬達內部通道被堵塞

Fault 4: The working medium is polluted and the internal channel of the hydraulic motor is blocked

解辦法：拆解，仔細清洗并更換清潔的工作介質。

Solution: Disassemble, carefully clean and replace the clean working medium.

故障五：配流盤和葉片磨損，內泄漏大

Fault 5: The valve plate and blade are worn and the internal leakage is large

辦法：修復或更換有關零件。

Solution: repair or replace relevant parts.

故障六：液壓系統中單向閥密封不良

Fault 6: The one-way valve in the hydraulic system is poorly sealed

辦法：修理單向閥閥座或更換有關零件，使閥座與鋼球嚴格密合。

Solution: Repair the check valve seat or replace the relevant parts to make the valve seat closely fit with the steel ball.

故障七：液壓系統中溢流閥失靈

Fault 7: overflow valve in hydraulic system fails

辦法：修理或更換溢流閥。

Solution: repair or replace the relief valve.

以上就是全自動攪拌車液壓馬達比較常見的故障及原因辦法，但這些也僅僅是一部分故障，大家在用車的過程中須得掌握一些修車技能，這樣才不于在關鍵時刻“掉鏈子”。關注我們http://www.jqeq.cn，了解更多的事項！

The above are the common failures and causes of the hydraulic motor of the fully automatic mixer, but these are only part of the failures. You must master some repair skills in the process of using the vehicle, so that you will not "lose the chain" at the critical moment. Follow us http://www.jqeq.cn , learn more!