Train end blocking device for air tightness test

A plugging device and air-tightness technology, which is applied in the direction of fluid tightness testing, measuring devices, liquid-tightness measurement using liquid/vacuum degree, etc., can solve the problem of fragile structure of plastic plates, low efficiency, loose filling and leakage Gas and other problems, to achieve universal and good airtight performance, improve operating efficiency, good universal effect

Pending Publication Date: 2019-03-29
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0006] In order to solve the air tightness test of the existing trains, the end wall door frame sealing plate is an integral plastic sealing plate with a card slot round hole, which is composed of upper and lower semicircular card slots. plate, the process of filling and sealing the gap between the round hole of the card slot and the outer diameter of the central tube is time-consuming, laborious, ineffic...

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  • Train end blocking device for air tightness test
  • Train end blocking device for air tightness test
  • Train end blocking device for air tightness test

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Embodiment Construction

[0042] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0043] Such as Figure 7 to Figure 17 As shown, the train end sealing device for air tightness test of the present invention includes a mobile trolley 1, a support frame 2, a vertical adjustment frame 3, a cylinder 4, two limit bolts 5, and a horizontal and pitch adjustment mechanism 6 , Metal blocking plate 7, coupler blocking box 8, two positive and negative pressure cut-off valves 9 and electric control safety valve 10.

[0044] The bottom of the four corners of the mobile trolley 1 is fixedly connected with a track wheel 1-1 for traveling on the track, the bottom of the support frame 2 is fixed on the mobile trolley 1, and the inner sides of the upper two ends of the support frame 2 are respectively provided with a frame The guide rail 2-1 and the two limit bolts 5 are respectively fixedly connected to both sides of the upper part of the support frame 2,...

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Abstract

The invention discloses a train end blocking device for an air tightness test, and belongs to the field of passenger compartment end sealing devices for railway train air tightness tests. The device comprises a moving trolley, a supporting frame, a vertical adjusting frame, an air cylinder, two limiting bolts, a horizontal and pitching adjusting mechanism, a metal blocking plate, a coupler blocking box, two positive and negative pressure stop valves, and an electronically controlled safety valve. According to an end wall door frame blocking mechanism of the invention, the hanging exposed portion of the end portion of a coupler docking apparatus can be completely inserted into the interior of the coupler blocking box, and the inclination angle posture of a positioning mechanism of the blocking device is finely adjusted by using a ball head as a fulcrum, thereby completely blocking a door structure in the middle of an end wall by using the metal blocking plate, and smoothly performing the air tightness test of a train passenger compartment. The device has the advantages of high structural strength, good universality and airtight performance, long service life and the like.

Description

technical field [0001] The invention belongs to the field of passenger compartment end sealing devices for rail train airtightness tests, and in particular relates to a train end sealing device for airtightness tests. Background technique [0002] High-speed rail passenger cars such as EMUs have strict precision requirements for the air pressure control in the passenger compartment. Therefore, after the passenger compartment and the chassis floor are assembled, the doors, windows, air-conditioning interfaces and other parts of the compartment need to be sealed separately. blockage, so that the compartment above the floor forms a closed space, and uses a vacuum pump negative pressure system to extract the air in the closed space, when the difference between the actual vacuum in the compartment and the rated vacuum of the vacuum pump When it is less than the theoretical differential pressure index, it can be determined that the airtightness of the passenger compartment of the ...

Claims

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Application Information

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IPC IPC(8): G01M3/28
CPCG01M3/2876
Inventor 王猛秦晓哲孙为民
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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