Electric tricycle quality appraisal

Electric tricycle is a three-wheeled transportation tool that uses a battery as power and a motor as drive. It is mainly used to pull goods or people.
electric tricycle belongs to the category of motor vehicles, which means that it is driven or towed by a power device and is designed for road driving, for use by people or for transporting items and performing special engineering operations. According to relevant laws and regulations, anyone who drives an electric tricycle on the road while drunk will be punished as dangerous driving.
In the case of electric tricycle quality appraisal, Zhongke Testing can provide electric tricycle quality appraisal services.

is subdivided according to usage, and can be divided into: leisure electric tricycles, truck-type electric tricycles, and fully enclosed sightseeing electric tricycles.

GB/T 37338-2019 Instruments for electric motorcycles and electric mopeds
GB 24155-2020 Safety requirements for electric motorcycles and electric mopeds
GB/T 24158-2018 General technical conditions for electric motorcycles and electric mopeds
GB/T 36672-2018 Lithium-ion battery for electric motorcycles and electric mopeds
GB/T 24156-2018 Electric motorcycles and electric mopeds Power performance Test method
GB/T 24157-2017 Test method for driving range and residual power indication of electric motorcycles and electric mopeds

Fan bought an electric tricycle for daily use of selling vegetables and transporting goods. But one morning, when Fan was riding an electric tricycle uphill, the rear wheel fell off, causing the vehicle to overturn. Fan fell down the slope and was seriously injured. Fan thought it was a quality problem with the electric tricycle, so he took the dealer to court and demanded compensation.
was entrusted by the court to conduct appraisal and analysis on "whether there are quality problems" in the PVC materials involved.
appraisal analysis results: The
appraisal analysis expert group discussed the relevant information and on-site investigation of the electric tricycle involved in the case and made a comprehensive quality and technical analysis, and made the following suggestions and conclusions:
The electric tricycle involved in the case fell off the wheel fixing threads and nuts, and there was slippage, and the diameter of the wheel screw on the other side did not exactly match the nut, resulting in low tightening force. These are not in compliance with national standards and are also potential safety hazards.
The tricycle wheel was defective in its manufacturing process and materials, posing safety hazards, and was a substandard product, which was the main cause of the accident.