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High-speed rail contact system complete compensating door type elastic chain type hanging construction method

A high-speed railway and catenary technology, applied in the direction of overhead lines, etc., can solve problems such as failure to ensure normal operation, difficulty in pantograph-catenary contact performance, and reduced flow quality, so as to facilitate construction organization, fast construction speed, and pantograph-catenary flow good quality effect

Active Publication Date: 2011-01-26
CHINA RAILWAY 11TH BUREAU GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The disadvantages of the existing technology are: the sliding friction of the pantograph relative to the contact line causes the pantograph to vibrate up and down, and the lateral vibration of the pantograph due to the lateral swing of the locomotive
With the increase of the speed of the train, the above-mentioned various movements intensify, the difficulty of maintaining good contact performance of the pantograph-catenary system increases sharply, and the flow quality decreases. When the train speed exceeds the allowable value of the pantograph-catenary flow system, the flow quality deteriorates seriously and cannot Guaranteed uptime

Method used

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  • High-speed rail contact system complete compensating door type elastic chain type hanging construction method
  • High-speed rail contact system complete compensating door type elastic chain type hanging construction method
  • High-speed rail contact system complete compensating door type elastic chain type hanging construction method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] After the catenary cable is erected and poured into the catenary cable seat, install the central anchor of the catenary cable, and adjust the pre-deflection of the arm and arm according to the ambient temperature. The pre-deflection of the arm and arm is calculated according to the following formula:

[0064] E=L×α×(t safety-t level);

[0065] If the span of the pillars is 50 meters, the design average temperature is 25 degrees, the installation environment temperature is 40 degrees, and the coefficient of linear expansion α is 0.000017; then the pre-deflection dimensions from the center anchor to the two sides of the wrist arm are:

[0066] E1=50*0.000017*(40-25)=0.01275m;

[0067] E2 = 0.0255m;

[0068] E3 = 0.03825m;

[0069] E4=0.051m;

[0070] …………

[0071]Next, construction measurement and parameter determination are carried out, which include: pillar number, number of spans of this anchor section, tension of contact line, tension of catenary cable...

Embodiment 2

[0090] After the catenary cable is erected and poured into the catenary cable seat, install the central anchor of the catenary cable, and adjust the pre-deflection of the arm and arm according to the ambient temperature. The pre-deflection of the arm and arm is calculated according to the following formula:

[0091] E=L×α×(t safety-t level);

[0092] If the span of the pillars is 60 meters, the design average temperature is 25 degrees, the installation environment temperature is 5 degrees, and the linear expansion coefficient α is taken as 0.000017; then the offset dimensions of the wrist arm to the middle anchor direction are:

[0093] E1=60*0.000017*(5-25)=0.02m;

[0094] E2 = 0.04m;

[0095] E3 = 0.06m;

[0096] E4=0.08m;

[0097] …………

[0098] Next, construction measurement and parameter determination are carried out, which include: pillar number, number of spans of this anchor section, tension of contact line, tension of catenary cable, tension of elastic sling, self-...

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Abstract

The present invention relates to an installation method of full-compensation door-type stitched catenary equipment of contact line of high-speed railway. The method comprises preparation for construction, construction survey, calculation of a whole hanger, preparation for an elastic sling, installation of a mid-span hanger, pre-installation of the elastic sling, installation of an elastic hanger,detection of the spacing range of a localizer, demolition of a tightener of the elastic sling, detection of a compensation device, and other processes. The method belongs to the electromechanical field of railway traffic, in particular to an accurate and scientific construction method of stitched catenary equipment of the contact line of the high-speed electrified railway. The method improves theelastic evenness of the contact line and the quality of current collection of pantograph; the processed has the characteristics of strong maneuverability, high programming degree, and easy construction; the technology of pre-bias cantilevers is adopted in the method; the influence of tension changes on the elastic lengthening or shortening, influence of temperature changes on the linear lengthening or shortening, and the influence of the extension of new wires on the contact line are taken into consideration in advance before the elastic sling is installed; thus no secondary adjustment of theposition of the cantilevers and the state of the hanger is required after the elastic hanger is installed; the construction is rapid; and the time of occupation of lines is short.

Description

technical field [0001] The invention relates to a full-compensation door-type elastic chain suspension installation method for high-speed railway catenary, which belongs to the field of railway traffic electromechanical, in particular to a precise and scientific construction method for elastic chain suspension of high-speed electrified railway catenary. Background technique [0002] In the catenary full-compensation door type elastic chain type suspension method of this invention, the contact line is suspended on the catenary cable and the elastic sling by means of two elastic suspension strings arranged equidistantly from the suspension point. [0003] The disadvantages of the prior art are: the sliding friction of the pantograph relative to the contact line causes the pantograph to vibrate up and down, and the pantograph vibrates laterally due to the lateral swing of the locomotive. The contact wire vibrates up and down, and forms a wave that propagates forward along the w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60M1/20
Inventor 谢文艺夏谦云周梅芝
Owner CHINA RAILWAY 11TH BUREAU GRP
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