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A railway vehicle and vehicle technology, which is applied to vehicle parts, railway car body parts, bogies, etc., can solve problems such as resistance disappearance, achieve the effect of improving safety and eliminating front-to-back imbalance

Active Publication Date: 2019-10-29
NIPPON STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] However, if the set pressure difference ΔP2 of the front and rear pressure difference adjustment valve is reduced, the resistance against the following (1) to (3) disappears.

Method used

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Experimental program
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Effect test

Embodiment

[0070] Hereinafter, the result of confirming the wheel load fluctuation suppression effect of the railway vehicle of the present invention by time-history simulation using numerical integration will be described.

[0071] The vehicle model used for the simulation is set to have Figure 7 The typical air spring system shown is of length 20m for a commuter vehicle and has figure 1 The length of the shown air spring system of the present invention is a commuter vehicle of 20m, the curve radius of the track is 400m, the superelevation is 105mm, and the superelevation reduction rate is 400 times.

[0072] a) Wheel load fluctuation suppression effect (refer to image 3 and Figure 4 )

[0073] A simulation was performed assuming that the driving condition was a case where the vehicle stopped at an exit transition curve for 120 seconds when passing through the curve section.

[0074] As a result, in Figure 7 In the railway vehicle of the shown general air spring system, a diagon...

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PUM

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Abstract

Safety is improved by suppressing wheel load fluctuations that occur when, for example, a railway vehicle stops in a super-elevation decline section. A railway vehicle comprising a front bogie (2a) and a rear bogie (2b) on which air springs (1a, 1b) are arranged left and right in the width direction of the vehicle; Height adjustment device (3). The air springs (1a, 1b) of the front bogie (2a) and the rear bogie (2b) are connected by an air pipe (6) provided with a left and right pressure difference adjustment valve (5). Connect the air spring (1a) and air spring (1a) or air spring (1a) on either side of the front bogie (2a) and rear bogie (2b) to The spring (1b) is connected to the air spring (1b). A choke valve (10) is arranged in parallel with the front-rear differential pressure adjustment valve (9). A differential pressure adjusting valve (11) for front and rear unbalance is arranged in series with the differential pressure adjusting valve (9).

Description

technical field [0001] The present invention relates to a railway vehicle having bogies in which air springs are arranged on the left and right (hereinafter simply referred to as left and right) in the width direction of the vehicle, front and rear in the traveling direction of the vehicle. In particular, it relates to a railway vehicle capable of suppressing wheel load fluctuations in transition curve sections. Background technique [0002] like Figure 7 As shown, a railway vehicle having a bogie with air springs 1a, 1b arranged on the left and right includes an automatic height adjustment device (hereinafter referred to as LV) 3 combining a link and a height control valve on the left and right. Then, the LV3 automatically adjusts the amount of compressed air supplied to the inside of the air springs 1a, 1b in accordance with the load acting on the railway vehicle at a certain time, so that the height of the vehicle body 4 is kept constant. Hereinafter, the bogie located ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61F5/10B60G99/00B61F5/22
CPCB61F5/10B61F5/22B60G99/00B61F5/386
Inventor 龟甲智下川嘉之中居拓自萩尾吉则
Owner NIPPON STEEL CORP