Concrete mixer truck quality appraisal

Concrete mixer truck, also known as concrete transport truck, is a vehicle specially used to transport concrete. It mainly consists of a chassis, an upper structure and a stirring device, of which the stirring device is one of its main features. When the concrete is put into the tank, the tank begins to rotate to achieve the purpose of mixing the concrete. The working principle of
concrete mixer truck is to use the power system to drive the tank to rotate. At the same time, during the rotation process, the concrete is fully mixed evenly through the mixing device to ensure the quality of the concrete and facilitate transportation and pouring.
In the case of concrete mixer truck quality appraisal, Zhongke Testing can provide concrete mixer truck quality appraisal services.

1) According to the structure of the carrier chassis, there are two types: ordinary truck chassis and special semi-trailer chassis.
2) According to the transmission form of the concrete mixing device, there are mechanically driven concrete mixer trucks, hydraulically driven concrete mixer trucks and mechanical-hydraulic driven concrete mixer trucks.

The plaintiff purchased a concrete mixer truck from the defendant. Later, during the transportation process, it was discovered that the vehicle's mixer failed repeatedly. The plaintiff requested to terminate the contract on the grounds that the vehicle had quality problems and appealed to the court.
was entrusted by the court to conduct an appraisal and analysis on "whether there are quality problems" with the concrete mixer truck involved in the case.
appraisal analysis results:
appraisal analysis expert group discussed the relevant information and on-site investigation of the concrete mixer truck involved in the case and made a comprehensive quality and technical analysis, and made the following suggestions and conclusions:
found no abnormalities in use or external force of the mixer truck involved in the case. The needle bearings used in the reducer of the mixer truck involved in the case are easily damaged when subjected to axial loads, which in turn causes the reducer to malfunction.