Jinyun News: During the May Day holiday, the first section of the Jinjing City (Suburban) Railway project was in full swing to accelerate construction. The reporter learned from Tianjin Rail Transit Group that in the early morning of May 6, the first working day after the holiday, the catenary of the first section of the Jinjing Municipal (Suburban) Railway was successfully transmitted, and the cold slip test was completed in the afternoon and the hot slip test was completed at night, laying the foundation for the opening and operation within the year.
"The main tasks of the preliminary work of these major nodes are concentrated in the 'May Day' holiday, we make detailed arrangements from machinery and equipment, personnel allocation, driving routes, safety and security to logistics support, etc., hold a special meeting every night, organize daily shifts and patrols, ensure the safety and order of the site, and complete multiple engineering nodes in one day under sufficient preliminary preparation and careful on-site deployment." Niu Xilun, deputy general manager of the metro group municipal railway company affiliated to Tianjin Rail Transit Group, introduced, "Up to now, the first section of the Jinjing urban (suburban) railway project has been connected to bridges, rails, electricity and vehicles, and the equipment installation has been completed by 86%, and the decoration has been completed by 79%. ”
The first section of the Jinjing urban (suburban) railway project is the first urban (suburban) railway in Tianjin, and it is also a rail transit line connecting Tuanbo New Town and the downtown area, and it is an important project to promote regional economic development and alleviate urban traffic pressure, which will greatly improve the travel efficiency of citizens and inject new vitality into the prosperity and progress of the city.
It is understood that the catenary is a transmission line erected along the urban railway to supply power to the train. The elevated section of the first section of the Jinjing Municipal (Suburban) Railway adopts a double-bearing and double-conductor flexible catenary system, which can improve the reliability of the power supply system, ensure that the operation of the line is not affected in extreme weather or unexpected situations, and provide a strong guarantee for the high-speed operation of the train.
Cold slip is to carry out pantograph gliding on the track by the engineering vehicle traction test train under the condition that the catenary is not electrified, and the catenary is dynamically tested and checked to confirm whether the actual parameters meet the design and acceptance standards.
Thermal slip is to obtain electric energy from the catenary through the pantograph by the test train through the pantograph under the condition of catenary live, and drive itself to complete all the running actions such as starting, traction, braking, etc., to confirm whether the cooperation between the vehicle and the catenary system and the track has the train operating conditions, and to test the stability of the power supply system, catenary system, vehicle system and track operation. The test vehicle ran at low, medium and high speeds, the operating parameters of the equipment were normal, the wheel-rail relationship was good, and the sliding process was smooth and smooth, which met the expected goals.