7 drivers, 1 car: the "mechanical team" on the railway
2024-09-22
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original title: 7 drivers and 1 car: the "mechanical team" on the railway
workers' daily-china workers' network reporter zhang shiguang correspondent geng dan liu gang intern liu yichen
at 0:10 on september 19, on the harbin-jiamusi railway line in heilongjiang province, liu yuanchao, a large track maintenance machine driver, sat in the cab of the cleaning machine and kept exchanging instructions with his six companions outside the vehicle. liu yuanchao turned the joystick, and the conveyor belt in front of the cleaning machine extended, and the guide grooves on both sides opened and inserted directly into the ballast under the rails. with strong and uniform vibrations, the ballast under the rails "boiled" like dumplings, and the mechanical cleaning operation officially began.
35-year-old liu yuanchao and his six companions are all drivers of large track maintenance machinery in the mechanized screening workshop no. 3 of harbin engineering machinery section of harbin railway bureau group co., ltd. the train they are operating is the qs-650k full-section ballast cleaning machine, a mechanical operation vehicle used to clean and screen railway ballast. it consists of power, running, operation and other devices, and requires seven people to work at the same time for normal operation.
"the ballast under the rails has shock-absorbing and drainage functions. due to repeated crushing by trains and the influence of weather, some ballast will age and break, which will reduce the shock-absorbing function and affect the safety of train operation." liu yuanchao said, therefore, about every 10 years, the line needs to be cleaned and screened to remove damaged ballast and dirt, solve the problems of compacted and dirty roadbed and poor drainage, restore the elasticity of the roadbed, and ensure smooth operation of trains.
the screening machine team liu yuanchao works for has a total of 7 people, with an average age of 37. they have worked together for 5 years and have a very close cooperation. "this screening machine is 31.6 meters long, which is longer than a train carriage. there are 7 operating tables on the train with 7 drivers each doing their own job, which is a great test of the team's ability to work together." liu yuanchao said that during operation, the screening machine is in a running state, and each link needs to keep up in time. if one person falls behind, it will affect the overall screening progress. "we are like the left and right arms of the machine. we must be independent and work in harmony to make the complex machinery move in unison."
liu yuanchao, who has been working for 12 years, is an all-rounder in the crew and is proficient in all operating stations. "in the past, cleaning and screening relied entirely on manpower. the roadbed had to be dug 30 centimeters down and then dug horizontally. it took one hour for manual cleaning to complete 3 meters. now the cleaning machine can clean 300 meters in one hour, which greatly improves efficiency." in 2014, the harbin engineering machinery section put into use the qs-650k cleaning machine. only 7 people are needed to operate one vehicle to simultaneously complete the collection, screening, transportation, backfilling and other tasks of ballast.
liu yuanchao is the number one driver of this screening machine. he is mainly responsible for the starting of various operating devices, the adjustment of the excavation depth and the running speed of the vehicle. "among the seven drivers, i am the only one who always operates in the cab. the other six brothers operate the corresponding parts outside the locomotive and feedback the mechanical and line conditions to me. i dynamically adjust the overall status of the vehicle." liu yuanchao introduced that there are dozens of buttons and joysticks in the small operating room. in order to control the screening machine well, one must develop the ability of "keeping eyes and ears in all directions", using ears, eyes, hands and feet at the same time. such high-intensity and high-concentration work will last more than two hours.
zheng peiqing and zhang yunpeng are the second and third "collection drivers", responsible for controlling the guide trough to collect ballast. their driving position is in the middle of the vehicle, which is also the place where the ballast "boils" the most. the two people observe the line conditions on the left and right. "there is a lot of dust during screening, and we have to wear masks outside the car." zheng peiqing said that it is not easy to observe whether there are obstacles inside the line in a dusty space. after working for a long time, they have also developed a pair of "eagle eyes".
"the ballast is collected in the vibrating screen, and the dirt is removed by the vibrating screen, just like filtering sand. the remaining ballast still needs to be backfilled into the line." cao lei, the "vibrating screen driver" in the sixth position, said that he is responsible for adjusting the operating status of the vibrating screen, which is a key link in the screening, and the quality of the operation is closely related to him. he pointed to xie tian and yang yu, the "backfill drivers" in the fourth and fifth positions next to him, and said, "the remaining ballast needs to be returned to the designated location inside the line through their operation."
the screened out dirty soil needs to be discharged to a designated location outside the line through a conveyor belt. this is operated by liu zhilong, the "discharge driver" in position seven. "there is a power grid above this railway and electric poles on both sides. you must be extra careful when adjusting the height and direction of the conveyor belt." the harbin-jiamusi railway is the longest high-speed railway in the high-altitude and cold areas of northeast china. it has extremely high quality requirements. this is the first time for the drivers to come here for construction, and they are very cautious when working.
at 3:30 a.m., the cleaning was completed and the "mechanical team" successfully completed the 380-meter cleaning task. in half a month of night work, they have cleaned a total of 2.5 kilometers.
source: workers daily client
