At present, the cleaning technology of railway tank cars basically follows the traditional manual cleaning method, relying on people to clean, rust and garbage recovery. The lack of oxygen and toxic and harmful gases in the tank pose a threat to personal safety; in recent years, three-dimensional spherical cleaners and vacuum evacuation have also been used, but they still cannot change the situation that people want to get out of the tank. The cleaning is not thorough, and the corrosion in the tank cannot be solved.

Degaojie railway tank car automatic cleaning system is mainly used for railway chemical tank car cleaning equipment, it through mechanical transmission of high-pressure three-dimensional cleaning nozzle into the tank car interior, so that it maintains a proper target distance to the tank car wall, efficient automatic high-pressure water jet cleaning. The system is a comprehensive system with high-pressure water jet as the core, integrating machine, pump, fluid and automatic control. It has the advantages of simple structure, convenient operation, high degree of automation, reliability, completeness, safety, energy saving and environmental protection.

II. System Composition
 
Degaojie automatic cleaning system for railway tank cars is mainly composed of high-pressure water cleaning system, sewage treatment system, drying system and lifting positioning system. Lifting positioning system is composed of base, upright post and horizontal arm. The cleaning system consists of mechanical structure, high-pressure water jet system, hydraulic drive system and computer control system. The core component of the high pressure water jet system is a three-dimensional tank washer, which is rotated by hydraulic drive.

III. Workflow

The automatic cleaning system of Degaojie railway tank car is controlled by remote control, which can stop, enter the tank, drain or clean any tank car at any position. The lifting and opening mechanism can complete the cleaning in the tank at close range, which can effectively ensure the strike strength. Most of the rust is cleaned by pressure water. The pumping liquid movement actuator, cleaning and pumping movement actuator all run on the track.

IV. System characteristics

1. Use high-pressure water jet to clean the inner wall of the oil tank point by point. The cleaning of each position in the oil tank is controllable, and each position can be cleaned repeatedly separately.

2, through remote control, high degree of automation, stable operation;

3, pumping movement executive mechanism can clean sewage and clean down a large number of rust timely collection, induction, suction away, basically do not need people to go down the tank;

4, robot into the tank to detect cleaning effect and rust points, fixed-point spray rust remover, and do rust prevention technology treatment;

5. The whole process is completed by mechanical and automatic operation, and people are only responsible for auxiliary work, inspection and monitoring outside the tank.