JPH0223010A - Wire extension controller - Google Patents

Abstract

PURPOSE:To extend wire accurately and quickly by measuring the winding length at the winch side while the feeding length at the wire extension side and arranging a communication line between the winding side and the feeding side then obtaining the difference between the winding length and the feeding length and controlling the rotation of a wire laying wheel based on the difference. CONSTITUTION:A pilot wire 13 is jointed with a wire 14 and wound through wheels on a plurality of steel towers 15 around a winch 1. The winding length L0 is measured at the winch side and the feeding length L3 is measured at the wire feeding side. Transmitter/receivers 5, 6 are provided and the winding length L0 is inputted to a comparing section 9. Actually measured length L1 of the pilot wire 13 at the end of extending work and an actually measured length L2 of the wire 14 at the end of extending work are inputted together with the feeding length L3 to a correction operating section 8, and a correction value C is obtained through a formula C=L1-L2=K, KL/L2=C, then L4=L3-C-L0 is inputted to a wire extending control section 10 thus controlling the rotation of the extending wheel 3. By such wheel arrangement, the wire 14 can be laid quickly and accurately with a few workers.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a wire extension control device that automatically controls the wire extension speed of a wire extension car based on the winding strip length on the winch side. .

[Conventional technology]

Traditionally, wire extending work is performed by placing a winch on the winding side and a wire extension car on the wire extension side, and placing a driver on each of the winch and the wire extension car. Supervisors were stationed and each worker operated the winch and track extension truck while communicating through telephone lines.

[Problem to be solved by the invention]

When carrying out wire extension work, extreme care must be taken to ensure that the wire does not become too loose and come into contact with the wire extension scaffolding, etc., or that the tension does not become excessive.

However, in the past, as mentioned above, drivers communicated with each other by phone and drove based on their experience and so-called feelings, so quantitative control was not performed, and there was a combination of inaccurate contact information, etc. However, there was a problem in that it was difficult to quickly and accurately extend the line.

Therefore, an object of the present invention is to automatically control the speed of the track extension car by using means for transmitting information based on data communication between the winch side and the track extension car and automatic control on the track extension car side. do.

[Means to solve the problem]

In order to solve the above problems, the present invention provides a winding strip length measuring section 2 on a winch 1 installed on the winding side, as shown in FIG. 3 is provided with a wire extension length measuring section 4. Suitable transmitter/receiver devices 5, 6 are provided between the winding side and the wire rolling side, respectively, and a wireless or wired communication line is installed. A control device 7 is provided on the wire extension side. The control device 7 includes a correction calculation section 8, a comparison section S, and a track rolling stock control section 10.

A feedback circuit 11 is formed that extends from the wire length measurement section 4 to the comparison section 9 via the correction calculation section 8.

Further, a control circuit 12 is formed that extends from the comparison section 9 to the track rolling stock 3 via the track rolling stock control unit 10.

Further, the actual length L1 of the pilot wire 13 at the end of the extension and the actual length L2 of the electric wire 14 at the end of the extension are separately input to the correction calculation unit 8. The correction calculation unit 8 performs the above LI, LZ, L
Based on t, a correction value C is calculated in accordance with the difference between the actual length of the electric wire and the actual length of the pilot wire, which changes every moment as the extension progresses.

The winding strip length measurement value L0 is input to the comparison section 9 via a communication means.

The control device 7 automatically controls the wire rolling car 3 so that the difference between the wire extension length measurement value L3 and the winding strip length measurement value L0 becomes a correction value C.

[Effect]

After extending the pilot wire 13 to the steel tower 15 in advance,
An electric wire 14 is connected to its terminal end via a joint 16. Since the actual lengths L+ and Lz of both the pilot wire 13 and the electric wire 14 at the end of the wire extension can be calculated in advance from an approximation formula of a catenary curve, the calculated values are input to the correction calculation section 8 of the control section W7.

Usually, the unit weight of the electric wire 14 is larger than that of the pilot wire 13, so t, z >L.

At the beginning of the wire extension, there is only the pilot wire 13, and as the wire extension progresses, the wire 14 gradually moves forward, and finally the wire 1
Replaced by 4. Therefore, at the beginning and end of line extension, L
Due to the difference in f - Ll -, the number of wire extensions must be increased compared to the amount of winding.

The above-mentioned difference is obtained by providing a speed difference between the winch and the track rolling car depending on the progress of the track rolling.

Therefore, in the present invention, the required correction value is calculated (an example of which will be described later), and the difference between the extended line length needle, the 'jjtl value, 3, and the winding line length measurement (iI\L0 is always the correction value). Automatically fill jn so that

The winch 1 is driven at a predetermined speed by a driver operating a controller 17. The operator can know the position of the joint 16 based on the measured value of the winding strip length. Further, the position of the joint 16 can be known from visual information obtained through a television camera installed at or near the steel tower 15. As a result, when the joint 16 passes through the steel tower 15, careful operation can be performed by reducing the wire drawing speed.

As the wire extension progresses, the winding strip length measuring unit 2 of the winch 1 transmits the winding strip length needle @value L0 to the wire stretching side control device 7 via the communication means.

On the other hand, the brake of the track rolling car 3 is operated by the control signal from the track rolling car control unit 10, and the magnitude and sign of the control value L4 output from the comparison unit 9 determine the magnitude of the flaking force.
The direction of movement from the neutral position is controlled. Further, the electric wire 14 extended from the wire extension car 3 is measured in the extended wire length measuring section 4, and the measured value L3 is inputted to the correction calculation section 8.

The result calculated in the correction calculation unit 8 is input to the comparison unit 9, where it is compared with the winding length measurement value L0,
As described above, automatic control is performed so that the difference between L:l and Lo becomes the correction value C, that is, -CL,=I,4 becomes zero.

〔Example〕

An example of the correction calculation in the correction calculation section 8 will be explained.

Let the actual length of the pilot wire 13 at the end of the extension be the actual length L2 of the electric wire 14 at the end of the extension, and let the difference between them be K. This difference is proportional to the relative speed difference between the track rolling stock and the winch 1.

Assuming that the above K is linearly proportional to the actual length L2 at the end of the wire extension, the measured value of the wire length is:

When XL, = C t , this C is proportional to the relative speed difference between the track rolling car 3 and the winch 1 when the track length measurement value is L:I.

Let this C be the correction value.

Therefore, the correction calculation section 8 calculates the above-mentioned correction value C, and inputs the calculation results of t, . . . -C to the comparison section 9.

The comparator 9 calculates (Ls C) Lo=L- and automatically controls the speed of the track car 3 using L4 as the control value as described above.

〔Effect of the invention〕

As described above, the present invention automatically controls the line rolling car so that the difference between the measured value of the continuous line length and the measured value of the winding line length, which changes every moment as the line progresses, becomes a predetermined correction value. Because of this, there is an effect that the wire can be extended accurately and quickly.

[Brief explanation of the drawing]

The drawing is a block diagram showing the configuration of the present invention. 1... Winch, 2... Winding strip length measuring section, 3... Line extension car, 4...
・・Wire extension length measurement unit, 5.6 ・・・Transmission/reception device,
7...Control device, 8...Correction calculation unit,
9...Comparison unit, 10...Line car control unit, 11...Feedback circuit, 12...
- Control circuit, 13...Pilot wire, 14...Electric wire.

Claims (1)

[Claims] (1) A winding strip length measuring section is provided on the winch, a wire strip length measuring section is provided on the wire rolling car, a communication means is provided between the winch side and the wire rolling vehicle side, and a control device is provided on the wire rolling vehicle side, and the control thereof is provided. The device is provided with a correction calculation section, a comparison section, and a track extension car control section, and a feedback circuit from the track extension car measurement section to the comparison section via the correction calculation section, and a feedback circuit from the comparison section to the track extension car control section via the track extension car control section. A correction calculation unit calculates the actual length of the electric wire, which changes as the wire progresses, based on the actual length of the pilot wire at the end of the wire extension, the actual length of the electric wire at the end of the wire extension, and the measured wire length. A correction value is calculated according to the difference between the length and the actual length of the pilot wire, and the measured value of the winding strip length is inputted to the comparison section via the communication means, and the control device calculates the extended wire length measurement and the winding strip length. A wire extension control device that automatically controls the difference between the measured value and the corrected value.