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A method for calculating the distance between curved tracks with closed positive vector difference

A technology of curved track and calculation method, which is applied in the field of rail transit, can solve the problems such as the accumulation of positive vector difference is not easy to close, and achieve the effects of space complexity and robustness, small field workload, and low equipment requirements

Active Publication Date: 2019-02-15
JIANGXI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned situation, the object of the present invention is to provide a method for calculating the distance of the curved track with closed positive vector difference, so as to solve the problem that the total positive vector difference and the cumulative positive vector difference are not easy to close in the prior art

Method used

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  • A method for calculating the distance between curved tracks with closed positive vector difference
  • A method for calculating the distance between curved tracks with closed positive vector difference
  • A method for calculating the distance between curved tracks with closed positive vector difference

Examples

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Effect test

Embodiment 1

[0041] A method for calculating the pitch of a curved track with closed positive vector difference, comprising steps S11 to S12:

[0042] In step S11, the on-site sine of the curved track is collected by the track inspection trolley, and compared with the plan sine determined by the line design data to obtain the sine difference of each measuring pile (mileage).

[0043] see figure 1 , compare the current position with the plane position of the 16mm action side under the tread at the corresponding front and rear distance of 10m, and obtain the curve site sine (such as formula (1)); calculate the corresponding mileage plan sine according to the design line parameters; according to formula (2) Calculate the positive vector difference of the current measured pile (mileage) and automatically record it together with the corresponding measured pile (mileage), forming a positive vector difference sample {Δv i |i=1,2,...,290}.

[0044] Step S12, taking the positive vector difference...

Embodiment 2

[0051] A method for calculating the pitch of a curved track with closed positive vector difference, comprising steps S21 to S22:

[0052] In step S21, the on-site sine of the curved track is collected by manually pulling strings, and compared with the plan sine determined by the line design data to obtain the sine difference of each measuring pile (mileage).

[0053] see figure 1 , the general operation of manual pulling strings often uses the outer strand track as the reference strand, and piles are set on the curve at an equal interval l (such as 10m), and the measured pile number is i (i=0,1,2,...,n,n+1 ); then with a chord line with a length of 2l (such as 20m), the two ends are close to the 16mm action side under the outer rail tread at the adjacent pile point and tensioned, and the chord vector height of the middle pile point is measured to obtain the curve site sine vector ( Such as formula (1)); according to the design line parameters, the planned sine of the correspo...

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Abstract

The invention discloses a method for calculating the distance between curved tracks with the positive vector difference closed, which comprises the following steps: 1. Collecting the positive vector of curved tracks on the spot, calculating the positive vector of the plan according to the line design data, and then calculating the positive vector difference of each pile point; 2. Step 2, taking the calculated positive vector difference sequence as an input and adopting a catch-up method to calculate the dial distance. Compared with the rope positioning method, the invention has the advantagesof controlled head and tail distance of the curve, good roundness after operation, solving the problem that the sum of positive vector differences and the accumulation of positive vector differences are difficult to close, and the time complexity, the space complexity and the robustness are better. Compared with the coordinate method, the invention calculates the dialing distance according to thepositive vector difference, avoids the joint measurement with the CP iii network, has small field work load and low equipment requirement; Compared with the iterative method, the invention is a directmethod, which can obtain an accurate solution through a finite-step four-principle operation. The invention is suitable for the maintenance of curved tracks of various railways to ensure the safety and comfort of train operation.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a method for calculating the pitch of a curved track with closed positive vector difference. Background technique [0002] The curve is the location where the three major diseases frequently occur on the track. Whether its condition is good or not has an important impact on the safe, comfortable and fast operation of the train. Compared with the straight track, the geometric relationship of the curved track is more complicated, and the repeated load it bears is more uneven. Therefore, for the public works department, it is an important and arduous task to maintain the good condition of the curved track. The geometric state of the curved track can be described by dimensional parameters such as track direction (positive vector), height, gauge, level (superelevation), etc. It will inevitably deteriorate under the repeated load of the train, so it is necessary to periodically ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 魏晖
Owner JIANGXI UNIV OF TECH
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