If the shock absorber of the mixer fails or has problems, first check whether the shock absorber has oil leakage, press the shock absorber, and then release it. If the mixer jumps for two or three times, it indicates that the shock absorber is in good condition.
If the mixer truck vibrates seriously during emergency braking at a slow speed, it indicates that there is a problem with the shock absorber. The shock absorber must be removed, erected, the lower connecting ring clamped in a vice, and the shock absorber rod pulled and pressed several times.
At this time, there should be stable resistance, and the resistance to pull up should be greater than that to pull down. If the resistance is unstable or there is no resistance, if there is a lack of oil in the vibrator or the valve parts are damaged, the resistance may be reduced. Stop repairing or replacing the parts and send them to repair immediately.
The oil seal and sealing washer may be damaged and invalid, and they should be replaced with new ones. If the oil leakage cannot be eliminated, pull out the shock absorber. If there is a card or the weight is different, further check whether the clearance between the piston and the cylinder is too large, whether the piston connecting rod of the shock absorber is bent, and whether the piston connecting rod and the cylinder surface are scratched or pulled.
If the above inspection is normal, the vibration damper shall be further disassembled to check whether the fitting gap between the piston and the cylinder of the concrete mixer is too large, whether the cylinder is tensioned, whether the valve seal is good, whether the valve disc fits closely with the valve seat, and whether the extension is too large. The vibration damper spring of the concrete mixer is too soft or broken. The method of grinding or replacing parts shall be adopted according to the situation.
In addition, the vibration damper of the automatic feeding mixer will produce noise in actual use, mainly because the vibration damper of the automatic feeding mixer collides with the leaf spring, frame or shaft, the rubber pad is damaged or falls off, the dust cylinder of the vibration damper is deformed, lack of oil, etc., find out the causes and repair them.
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