Three common hydraulic motor fault phenomenon and maintenance way, have you learned?

Hydraulic motor as easy to appear problem parts including valve shaft and oil distribution disc, rotor, stator, bearing and oil seal, etc. , today big blue hydraulic factory will share several common trouble phenomenon and treatment method of the motor. A, cannot operation, 1) Check whether pairing of stator and rotor is too loose, — Motor in operation due to the internal parts of local all is in a state of mutual friction, assuming that the hydraulic system of hydraulic oil in the oil too poor, will speed up the motor wear of internal parts. When the stator body needle tooth exceeds a certain limit, will make the daughter matching internal clearance greatens, cannot reach the normal oil seal effect, it may form inside leaking problem, further its performance condition for motor functioning under no-load condition, but the sound is bigger than a normal condition, will be unable or slow running under the load, treatment method is to change diameter slightly larger needle teeth; （ 2) Check the output shaft and shell holes could be accelerated due to abrasion between leak - — Form the main reason of the problem is the purity of the hydraulic oil is not enough, contains some impurities, thus incur shell internal grinding groove, which makes the motor weakness within the leak, the processing method is to timely change shell or the whole match again. Second, the speed instability under low speed, crawl phenomenon ( 1) Can check the tooth surface of the rotor of roughcast strain conditions - — Hair the location of the friction force is bigger, not hair location is small, it's easy to present the speed and torque ripple, especially in the condition of low speed, easy to present the speed imbalances. That are worth noting is that in order to ensure the stability of low speed, the lowest cycloid motor speed as far as possible do not less than 10 r/min, otherwise unable to complete work; （ 2) About stator cylinder needle wheel cannot turn in the job, can take the needle slightly less than the thickness of the stator tooth thickness to adjust method. Three common hydraulic motor fault phenomenon and maintenance way, have you learned? Third, speed is reduced, the output torque ( 1) With cycloid motor without gap compensation structure, the rotor and stator to stop line contact seal, and the motor of the sealing line is longer, if the rotor and stator interface is poor because of the tooth profile accuracy, poor quality of assembly, or a contact at the strain, the leak was bigger, formation of volumetric efficiency lower landing landing, rotational speed and output torque. The problem of processing method is thinking about changing the needle wheel, and the rotor bedding-in; （ 2) The meshing of the stator and the rotor position, and the valve shaft and the new structure of the body position, relative position corresponding to the two sex differences has a great influence on the output torque, if both the corresponding relation of mismatch, namely to clarify with flow accuracy is not high, which will further provoked change sharply lower speed and output torque, processing method is sure the detail the location of the parts and do the corresponding adjustment. （ 3) Valve shaft wear - — Leak inside is big, affected the accuracy of oil distribution, or because of body matching flow and motor shell hole between the fit clearance is too large, affect the accuracy of oil distribution, is likely to be landed the volumetric efficiency, impact speed and output torque of the motor. In order to solve this problem, proposed using brush plating or plating wrist to repair it, as much as possible to ensure appropriate clearance.