What should be paid attention to after the speed control system of the dowty retarder is put into use

After the dowty retarder speed control system is put into use, it is necessary to improve the maintenance quality of the entire dowty retarder speed control system. The shunting operation shall be carried out in strict accordance with the operating specifications. The specific considerations can be from the following aspects:

(1) In the "Technical Conditions of Automatic Hump", "8.2.2 The safety of the topping should be implemented in accordance with the relevant regulations during engineering design. The reduction limit of the braking power of the retarder in operation is 90% of the nominal value." In order to avoid dowty retarder Excessive braking power drops cause vehicle speeding and accidents. It is necessary to improve the quality of the dowty retarder maintenance. It is required to maintain the retarder in strict accordance with the requirements of the retarder standard "Railway Vehicle Retarder Operation and Maintenance Requirements". Of course, sometimes due to users Due to the limitation of the technical conditions of the repair room, it is difficult to improve the repair quality of the dowty retarder. Therefore, the "factory repair" mode (a centralized maintenance management method) can be considered for repairing the dowty retarder to improve the quality of repair. The method of adjusting the speed control system of the retarder according to different service life can also be adopted to ensure the safe operation of the speed control system of the dowty retarder.

(2) For the point-connected speed control system, in rainy and snowy weather, it is necessary to strengthen the protection of the retarder's exit speed at the braking position to prevent the vehicle exit speed from entering the decelerating section when the exit speed is too high, causing accidents caused by overspeeding.

(3) For the full dowty retarder speed control system, it is necessary to strengthen the protection of the first hook rolling vehicle after the hump stops to prevent the first hook vehicle from overspeeding.