No.3, Jiangjunzi Road, Bangjiangxi Village, Dalong Street, Shiqi Town, Panyu District, Guangzhou City





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School bus rain test solution


Project purpose

Detect the rain-proof performance of the enclosure seal of the school bus in a rainy environment.



The test plan mainly includes five parts: side and top spray system, water supplement system, water circulation system, sewage system, and electronic control system. The rain-proof sealing test device must ensure that water is sprayed from the side and top directions to the car windows to avoid dead angles of water spray, and to ensure that the water spray pressure and flow correspond to the requirements of the national standard for each part of the car. All parameters are designed and tested in accordance with QCT476-2007 standard.

School bus rain test

School bus rain test program - reference diagram


[Spray system] The entire shower room body spray system is mainly composed of pipelines, nozzles, valves, filters, water pumps, display devices, etc. All spray pipe materials are made of stainless steel pipes,

[Rain Intensity] The average top is 12±1mm/min, and the average on both sides is 8±1mm/min (nozzle spray pressure: 170kPa±30 kPa).

[Filtration system] Install a two-layer filter device in the pool, which can effectively filter the impurities in the circulating water of the circulating pool, reduce the clogging of the nozzle, and ensure the normal operation of the system.

[Water replenishment system] In order to replenish water to the pool in time, a set of water replenishment system is specially designed. The water replenishment system consists of water inlet pipe, solenoid valve, water level switch, ball valve, etc. The automatic operation of water replenishment in the circulating pool reduces the workload and strengthens the stability of the system.

1. The inlet pipe adopts DN32 galvanized pipe to ensure the water supply.

2. A float-type mechanical switch device is installed at the end of the water supply pipe. When the water supply reaches the set maximum liquid level, the mechanical device closes the water supply pipe


[Control system] It adopts PLC control + control panel control and remote remote controller control, equipped with electric parameter meter, with power-off data storage function and alarm prompt.


Solution value

The program is tailored to the general school bus body size, and can completely test the rainproof performance of the school bus shell. It plays an important role in improving the quality of school buses. The solution uses an automatic filtering and water replenishment system to ensure continuous water supply during the raining process and speed up the inspection progress. The rain test can ensure the pass rate of school buses and reduce the potential safety risks of school buses in rainy weather. This is of great significance to the protection of the personal safety of students.


related case

Guilin Bus Development Co., Ltd.

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