High-speed bullet train with end plates and air brake ground effect wings

A technology of high-speed trains and speedbrakes, which is applied in the direction of brakes, brakes, and railway car bodies for special railway systems, can solve the problems of high-speed trains with wear and tear on the wheels and rails of maglev trains, and can make up for the serious wear of wheels and rails and reduce wear and tear. effect of reducing the braking distance

Active Publication Date: 2015-04-15
BEIHANG UNIV
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Problems solved by technology

[0003] The purpose of the present invention is mainly to solve the problems of serious wear and tear of the existing high-speed moving train wheel rails and the need to rebuild the rail network of the maglev train, and at the same time bring benefits such as the emergency braking system of the high-speed moving train

Method used

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  • High-speed bullet train with end plates and air brake ground effect wings
  • High-speed bullet train with end plates and air brake ground effect wings
  • High-speed bullet train with end plates and air brake ground effect wings

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Embodiment

[0028] The CRH2 electric train set is selected as the basic shape, and the design is improved on this basis. The new high-speed train has 3 sections and is a full-motion model. Install ground effect wings 1 at equal intervals between the two bogies along the body axis on both sides of each car of the high-speed motor car near the ground. The number of ground effect wings 1 installed on each side is 3, and the equal distance between ground effect wings is 4m. , the height h above the ground is 0.35m, and because the lower edge of the end plate 5 is parallel to the ground, the installation angle at this time is equal to the angle of attack AOA, by Figure 4 As can be seen.

[0029] In Figure 3, the ground effect wing layout is a rectangular wing, the aspect ratio is 2, the equal chord length C is 1m, and the half-span length L is 1m. For detailed graphics, please refer to Figure 5 . Airfoil selection NACA6409 airfoil. The ground effect wing is fixedly connected to the side o...

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Abstract

The invention discloses a high-speed bullet train with end plates and air brake ground effect wings, and belongs to the technical field of high-speed bullet trains. Ground effect wings are installed on a high-speed bullet train engine and two sides, close to the ground portion, of each compartment in an equal altitude and evenly spaced mode, an end plate is arranged on a wingtip of each ground effect wings, and meanwhile an air brake is arranged on the upper surface of each ground effect wings. The high-speed bullet train with the end plates and the air brake ground effect wings is suitable for a current railway system, abrasion loss between wheel tracks is reduced to some extent, maintenance cost is reduced, and emergency braking distance is shortened effectively. Good air dynamic characteristics are utilized sufficiently, ground effect characteristics of the ground effect wings are enlarged by the end plates additionally, emergency braking is achieved effectively by pneumatic braking, and mechanical wear is reduced greatly. The defects that an existing high-speed bullet train is critical in abrasion between wheel tracks and reconstruction of railway track network of magnetic suspension trains are overcome.

Description

technical field [0001] The invention belongs to the technical field of high-speed motor vehicles, and in particular relates to a high-speed motor vehicle with an end plate and a deceleration plate ground effect wing. Background technique [0002] First of all, many technical bottlenecks faced by high-speed EMUs when speeding up have been solved to a certain extent with the continuous improvement of high-performance electric motors, but the costs it brings are also huge, such as severe wheel-rail wear and the resulting High maintenance cost from (see reference [1]: RaghunathanR.S., Kim H.-D., Setoguchi T.Aerodynamics of High-Speed ​​Railway Train[J].Progress inAerospace Science,2002,38:469-514 ). A large number of studies have shown that as the speed of high-speed trains increases, the amount of wheel-rail wear decreases and the contact fatigue intensifies; as the axle load increases, the amount of wheel-rail wear increases rapidly and the contact fatigue weakens; there is a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T1/16B61D17/00B61H9/00
Inventor 屈秋林秦云鹏刘沛清郭昊卢哲王宇晨
Owner BEIHANG UNIV
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