Traction and brake system of train power ejection test platform

Abstract

The embodiment of the invention provides a traction and brake system of a train power ejection test platform. The traction and brake system comprises a reduced-scale train model 1, a reduced-scale rail model 2, a test bed bearing platform 3, a traction rack 4, a brake gallery 5, traction sliding chutes 9, a power system and a relay control system, wherein the test bed bearing platform 3 is dividedinto a traction section 6, a test section 7 and a brake section 8 according to functions; the reduced-scale train model 1 is placed above the reduced-scale rail model 2 and is connected with the traction rack 4 at the traction section 6; the reduced-scale rail model 2 and the traction sliding chutes 9 are mounted on the test bed bearing platform 3; the traction rack 4 is placed on the traction sliding chutes 9 and is connected with the power system; the brake gallery 5 is mounted on the brake section 8 of the test bed bearing platform 3; and the traction rack 4 and the brake gallery 5 are respectively connected with the relay control system. With the technical scheme, the train model on the indoor reduced-scale train power ejection platform can be accelerated to the required speed, and the train model can bake quickly and safely under a high-speed running condition.

Description

technical field [0001] The invention relates to the technical field of railway vehicle track test devices, in particular to a traction and braking system of a train power ejection test platform. Background technique [0002] The wheel-rail dynamic contact relationship reflects the dynamic interaction between the wheel and the rail, which is the core scientific issue in the field of vehicle-rail coupling dynamics research. The traction, braking, driving safety, wear, fatigue, etc. of the train are all in contact with the wheel-rail are closely related. The interaction of multiple subsystems such as the upper vehicle and the lower track aggravates the complexity of the wheel-rail contact. At present, the wheel-rail contact relationship is mainly focused on theoretical research. Theoretical research on the wheel-rail contact relationship is generally carried out from the aspects of the processing of the wheel-rail contact geometry and the distribution of the wheel-rail contact...

AI Technical Summary

Problems solved by technology

[0003] However, the existing scaled-scale train ejection test platform focuses on train aerodynamics, simplifies the relationship between the lower wheel and rail, and the traction mode used is also a fixed traction, which cannot meet the needs of wheel-rolling contact research. The braking system with a test platform is only suitable for this type of fixed traction mode. It is necessary to further improve its braking technology for how to brake smoothly and safely under the condition of rolling contact and moving forward for high-speed scale trains.

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