Semi-trailer quality appraisal

semi-trailer refers to a transport vehicle with a conditional hitch mechanism installed on the front end of the body, which is connected to the rear of the tractor in the horizontal direction, and the carriage is kept independent from the ground through supporting legs. Semi-trailers do not have the ability to travel freely and must be driven in conjunction with a tractor.
semi-trailers are usually used for cargo transportation and logistics distribution. Its advantages are large carrying capacity, strong adaptability, and high transportation efficiency. The use of semi-trailers can reduce the load on the tractor, save fuel and reduce operating costs. Semi-trailers are also widely used in the domestic and foreign freight markets and are an indispensable part of the modern logistics industry.
In the case of semi-trailer quality appraisal, Zhongke Testing can provide semi-trailer quality appraisal services.

Semi-trailers are classified according to their axles and can usually be divided into four categories: single-axle, double-axle, three-axle and multi-axle.
is classified according to the driving mode of semi-trailers: it can be divided into self-driven semi-trailers and other-driven semi-trailers.
semi-trailers can be classified according to structural characteristics into variable wheelbase semi-trailers, semi-trailers with liftable axles, multi-traction pin semi-trailers and movable traction pin semi-trailers.
is classified according to the form and use of semi-trailers: it can be divided into flatbed semi-trailers, low-flat semi-trailers, recessed flat-bed semi-trailers, box-type semi-trailers, dump semi-trailers, container-specific semi-trailers, and container flat-bed semi-trailers. Plate semi-trailers, container fence semi-trailers, liquid tank semi-trailers, powder container semi-trailers, livestock and poultry semi-trailers, prefabricated semi-trailers, long cargo semi-trailers, refrigerated semi-trailers, transverse extension semi-trailers, longitudinal extension semi-trailers and combination semi-trailers, etc.

JT/T 1332-2020 Powder material transportation semi-trailer
JT/T 1284-2020 Low-bed semi-trailer technical specifications
LY/T 2886-2017 Garden machinery Semi-trailer for golf courses
QC/T 909-2013 Asphalt cement mortar mixing semi-trailer
JT/T 885-2014 Safety performance requirements and testing methods for operational semi-trailers
QC/T 910-2013 Glass transport semi-trailer
QC/T 912-2013 Technical requirements for matching semi-trailer tractors and semi-trailers
GB/T 39015-2020 Road vehicles Interchangeability of mechanical connections between tractors and semi-trailers
GB/T 23336-2022 General technical conditions for semi-trailers

was entrusted by the court to undertake the identification and analysis of the cause of spontaneous combustion of the container semi-trailer involved in the case.
appraisal analysis results: The
appraisal analysis expert group discussed the relevant information and on-site investigation of the semi-trailer involved and made a comprehensive quality and technical analysis, and made the following suggestions and conclusions:
The vehicle involved caught fire and was damaged while driving. The fire point was near the turbocharger on the right side of the engine. The fire was related to the vehicle itself.