The small cement mixer is composed of chassis and upper part. When the upper part of the mixer fails, the first thing to do is to find out the cause of the failure: combined with the vehicle condition of the mixer, whether it occurs occasionally or often, whether there is any difference between the speed and speed of the mixer. When analyzing the cause of the failure, these factors are very important.
1、 Can body shaking
The tank body of small concrete mixer truck is on the axis, and the tank runs stably under normal state. Due to the accumulation or uneven operation of the material, the load-bearing deviation of the tank body will be caused, and the tank body will vibrate during operation. The specific performance of jitter fault caused by accumulation is as follows: 1. The tank body jitter changes periodically; 2. The tank body shakes no more than twice in one cycle. If the tank shakes irregularly, you can check whether the oil in the tank is turbid and whether the reducer is damaged, resulting in the oil mixing with metal particles.
First of all, the hydraulic system itself will have a sound when it outputs power, especially when the output power is high. Therefore, if there is regular noise of high power output when the empty car is empty, the possibility of serious material accumulation in the tank should be ruled out. If it is a heavy roar, the factor of air mixing should be considered; if the sound is relatively sharp, the high-pressure overflow noise and the noise caused by mechanical reasons should be divided. In case of heavy load, if the load is too large and exceeds the set value of the system relief valve, the system will overflow, and at this time, there will be a sharp roar, and the oil temperature will rise rapidly. Mechanical noise is often generated with the increase of engine speed.
3、 Heavy and weak
If the small mixer has heavy load and weak force, the age of the mixer can be considered first. If metal powder, copper foam or even large metal objects are found in the filter element, it can be concluded that the hydraulic pump or motor is worn.
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