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Rail vehicle parking brake method and parking cylinder for implementing the method

A parking brake and parking cylinder technology is applied in the fields of rail vehicle braking, parking cylinder, and rail vehicle parking brake, which can solve the problems of spring fatigue attenuation and parking braking force reduction, and achieve weight reduction, volume reduction, The effect of high driving safety

Active Publication Date: 2022-07-26
CRRC QINGDAO SIFANG ROLLING STOCK RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the above-mentioned problems such as reduction of parking braking force due to spring fatigue attenuation existing in the existing parking braking process, and provides a parking braking method for rail vehicles and a parking cylinder for implementing the method. The parking braking method It does not rely on the spring to provide the power source, and the braking force can be flexibly adjusted according to the load of the vehicle, which ensures high driving safety

Method used

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  • Rail vehicle parking brake method and parking cylinder for implementing the method
  • Rail vehicle parking brake method and parking cylinder for implementing the method
  • Rail vehicle parking brake method and parking cylinder for implementing the method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Example 1: see figure 1 , a parking braking method, the specific steps are:

[0066] S1. Charge compressed air into the parking cylinder to make the parking cylinder in the unlocked state, charge the brake cylinder with compressed air, apply the service brake, discharge the compressed air in the brake cylinder, and relieve the service brake. It should be noted that when the parking cylinder is in the unlocked state, the brake cylinder can only apply the service brake and relieve the service brake.

[0067] S2. Discharge the compressed air in the parking cylinder to make the parking cylinder in a locked state, fill the brake cylinder with compressed air, and apply the parking brake; Compressed air in the cylinder relieves the parking brake.

[0068] Specifically, when the parking brake needs to drag the vehicle and the vehicle cannot make the parking cylinder in the unlocked state by filling the parking cylinder with compressed air, the parking brake is manually reliev...

Embodiment 2

[0070] Example 2: see figure 2 , a parking cylinder, combined with a brake cylinder, used to implement the method for parking and braking a rail vehicle described in Embodiment 1, the parking cylinder comprising:

[0071] The parking cylinder 8 is provided with two symmetrically installed sealing chambers 3 , and the parking cylinder 8 is provided with a first air inlet 10 that communicates the parking air duct and the sealing chamber 3 ;

[0072] The parking screw 1 is arranged in the parking cylinder 8;

[0073] The parking nut 2 is sleeved on the parking screw 1, and is matched with the parking screw 1 through a non-self-locking trapezoidal thread. One side of the parking nut 2 is unidirectionally connected to the brake cylinder piston through two mutually symmetrical parking rod bolts 6. , two symmetrically arranged parking pistons 7 are installed on the other side, and each parking piston 7 is matched with a sealing cavity 3;

[0074] Two mutually symmetrical parking i...

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Abstract

The invention relates to a parking braking method for rail vehicles and a parking cylinder for implementing the method. The specific steps of the method are: charging compressed air into the parking cylinder, making the parking cylinder in an unlocked state, and charging the brake cylinder with compressed air. Enter the compressed air, apply the service brake, discharge the compressed air in the brake cylinder to relieve the service brake; Braking: Charge compressed air into the parking cylinder to make the parking cylinder in an unlocked state, and discharge the compressed air in the brake cylinder to relieve the parking brake. The parking braking method designed by the present invention does not rely on the spring to provide the parking braking power source, and does not experience fatigue attenuation with the running time of the vehicle, and the braking force can be flexibly adjusted according to the load of the vehicle, and the driving safety is high.

Description

technical field [0001] The invention belongs to the technical field of rail transit vehicle braking, and relates to a rail vehicle braking method, in particular to a rail vehicle parking braking method and a parking cylinder for implementing the method. Background technique [0002] The brake devices for rail transit vehicles all have the function of parking brake. Most of the parking brakes are applied by compression springs. The working principle of the parking brakes is: filling the parking cylinder with compressed air to compress the parking springs to relieve the parking brakes. The discharged compressed air applies the parking brake by compression spring force. For example: the Chinese invention patent with the authorization announcement number CN101788942B discloses a combined cylinder with a force conversion transmission device with a variable transmission ratio, including: a service brake cylinder as an active service brake, the service brake cylinder with at least...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61H11/06
CPCB61H11/06
Inventor 覃立伟张志强刁有彬徐少亭黄士伟
Owner CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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