Attentively guarding the "iron mushroom" dowty retarder

Jiang Weihua, 59 this year, is the foreman of the dowty retarder section of Harbin South Station of China Railway Harbin Bureau Group Co., Ltd. The station where he is located is a national road network marshalling station, which is responsible for the disassembly and arrival tasks of the five railway lines of Binzhou, Binbei, Binsui, Jingha, and Labin as well as the railway freight trains in the Harbin hub. There are more than 12,000 per day. The trucks are grouped here.

When you come to the truck marshalling yard where Jiang Weihua works, you will see rows of "iron mushrooms" dowty retarder clinging to the rails. When the trucks that have been unwrapped and dropped from the "humps" pass by, they will crackle. There was a sound.

These "iron mushrooms" are dowty retarder, which are automated equipment that controls the speed of the dumping vehicle. The hydraulic principle is used to act on the wheels to help the dumping vehicle gradually slow down and stop at a designated position. Don't underestimate these "iron mushrooms", they are the key to ensuring vehicle safety and improving marshalling efficiency. A freight car has a full load of 70 tons, plus its own weight, the total weight is nearly 100 tons. With these dowty retarder, the speed of the vehicle can be well controlled, otherwise the truck is likely to be offside and hit the vehicle in front. "

Jiang Weihua and his 20 workers are responsible for the repair and maintenance of 13,530 dowty retarder in Harbin South Railway Station. How to judge whether the retarder is malfunctioning and whether the slide cylinder of the dowty retarder is running smoothly and performing well. With decades of work experience, Jiang Weihua has developed the unique skill of "stepping on mushrooms". "It mainly relies on the sense of feet. All the dowty retarder are stepped on one by one with their feet. It is normal to step on one of the tops with great resistance. If it is easy to step on or cannot be stepped on, it means that the oil and gas have leaked." According to Jiang Weihua, there are 64 routes in the marshalling yard, and they have to walk each route at least one round trip every day, each of which needs to walk more than 10 kilometers. After stepping on every decelerator, both legs sink like lead. Jiang Weihua has to step on at least one pair of protective shoes every summer.

This summer is Jiang Weihua's last summer luck. He has a deep affection for the "iron mushroom" dowty retarder that he has to deal with every day. "They are like my partners. I am very familiar with every dowty retarder, every bolt, and every part. I will retire in a few months. Do more for the goods." Jiang Weihua said honestly.