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Braking system for freight train

A freight train and brake system technology, applied in the field of freight train brake systems, to achieve the effects of prolonging service life, reducing wear, and reducing use and maintenance costs

Inactive Publication Date: 2016-04-20
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is an urgent need to develop a braking system that can meet the different braking requirements of freight trains under the two working conditions of no-load and heavy-load without making major improvements on the existing braking system.

Method used

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  • Braking system for freight train
  • Braking system for freight train
  • Braking system for freight train

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Effect test

Embodiment 1

[0039] A braking system for freight trains such asfigure 1 As shown, it includes the main brake pipeline composed of train pipe 1, auxiliary air cylinder 3, distribution valve 5, acceleration release air cylinder 4 and brake cylinder 6. The brake cylinder 6 is connected to the basic brake device of the truck and the brake shoes, and is used to generate the main braking torque to the wheels. The brake system also includes an auxiliary brake pipeline connected to the distribution valve 5, and the auxiliary brake pipeline includes an empty-load vehicle control valve assembly 7, Relay valve 8, gas-liquid conversion booster valve 10, fuel tank 12 and hydraulic damper 11, relay valve 8 is also connected to air supply cylinder 9 that provides pressure air, and empty-load vehicle control valve assembly 7 is also connected to three-way pipe joint 16. The other two ends of the three-way pipe joint 16 are respectively connected to the brake cylinder 6 and the distribution valve 5, and the...

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Abstract

The invention relates to a braking system for a freight train. The braking system comprises a main braking pipeline composed of a train pipe, a distribution valve (5), an auxiliary air cylinder (3), a braking cylinder (6) and an accelerating relief air cylinder (4). The braking cylinder (6) is connected with a braking shoe and used for generating main braking torque on wheels. The distribution valve (5) is connected with an auxiliary braking pipeline. The auxiliary braking pipeline comprises an empty and heavy vehicle control valve assembly (7), a relay valve (8), a gas-liquid converting and pressure increasing valve (10), an oil tank (12) and a hydraulic damper (11) which are sequentially connected. The hydraulic damper (11) is used for generating braking torque on an axle. The relay valve (8) is connected with an air supply cylinder (6) for providing pressure air. The empty and heavy vehicle control valve assembly (7) is connected with the distribution valve (5). Compared with the prior art, the braking system can meet the braking requirements of different load conditions of the freight train, and has the advantages of being low in pressure air loss, small in abrasion loss of the braking shoe, small in wheel tread abrasion and the like.

Description

technical field [0001] The present invention relates to a braking system, in particular to a braking system for freight trains. Background technique [0002] One of the core problems in the braking control of existing freight trains is that the braking rate of empty and heavy trains differs too much, and it is difficult to balance the braking force (moment) of the entire train, which will cause excessive braking force of empty trains to lock the wheels, resulting in wheel rubbing. hurt. Now the basic structural concept of the train empty-load car adjustment device is: the braking rate design of the train braking system is based on the heavy car, and the empty-load car adjustment is triggered by different positions of the empty car bogie bolster in the empty and heavy car states. The device and discharge part of the pressure air entering the brake cylinder to achieve the purpose of reducing the braking force of the empty vehicle. Because the shock-absorbing structure of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61H11/06
CPCB61H11/06
Inventor 应之丁颜松夏健博顾灵燕
Owner TONGJI UNIV
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