JPS5845371B2 - Catenary suspension system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a catenary suspension system that is installed on a catenary work vehicle that erects new overhead contact lines, ie, suspension lines, auxiliary suspension lines, contact wires, etc. during railway line construction.

The overhead line work vehicle is rotatably equipped with a drum that wraps various contact wires, and one end of the contact wire is fixed to a bracket on a utility pole, and the work vehicle is driven automatically with appropriate braking applied to the drum. Normally, the overhead contact wires are pulled out from the drum while maintaining appropriate tension by running them, and then hooked onto the brackets of utility poles one after another at predetermined positions.

In the above-mentioned work, the suspension system that suspends the overhead contact line being pulled out from the drum from the bracket of the utility pole has conventionally consisted of a simple column-shaped suspension mast with guide rollers installed at the top of the overhead contact line to guide the overhead contact line. Because it is common,
In the case of something that should be suspended from the top of a bracket on a telephone pole, such as a suspension line, first move the suspension mast laterally (in the vehicle width direction) to a position that avoids the tip of the bracket protruding onto the track, and then In addition, it was necessary to perform the extremely troublesome operation of moving the suspended mast laterally, returning it to its original position, and suspending the suspension line supported by the guide rollers of the suspended mast at a predetermined position on the upper part of the bracket. .

With such a conventional structure, in addition to requiring lateral movement of the suspension mast as described above in normal suspension work, for example, where the track is curved, the bracket of the utility pole may be moved inside or outside the center of the track. Since it is displaced outward, it is necessary to increase the lateral movement stroke of the suspended mast by that displacement, and the direction of lateral movement is opposite on the up line and down line, so the overall width is quite large. This necessitates a large lateral movement stroke.

Therefore, conventional measures have been taken to keep the lateral movement stroke of the suspension post small by keeping the bracket rotatable relative to the utility pole and rotating the bracket. Rotate the bracket on the utility pole side and fix it after the suspension is completed, etc.
Problems that make the work extremely complicated and troublesome are unavoidable.

The present invention provides an overhead wire suspension system that can eliminate all of the above-mentioned problems with an extremely simple configuration.
Embodiments will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic front view showing the basic structure of the overhead wire suspension system according to the present invention, in which 1 is an outer column that is fixed upright on the overhead line work vehicle 14, and 2 is an outer column that can be slid up and down on the outer column 1. The inner pillar 2 is supported in such a manner that a guide support part 3 of a suspended mast 5, which will be described later, is attached to the upper part of the inner pillar 2.

Reference numeral 4 denotes a suspension mast support that is attached to the guide support part 3 so as to be movable in the lateral direction (vehicle width direction). The suspension mast receiver 4 is installed in a screw-fit state, and when the screw shaft 7 is rotated by the operation of a drive source 8 such as a hydraulic motor, the suspension mast receiver 4 is threaded in the left-right direction in the figure. .

The suspension mast 5 has an attachment portion 5at whose base end is attached to the suspension mast receiver 4 and extends laterally, a column portion 5b extending upward from the tip of the attachment portion 5a, and an attachment portion 5a from the upper end of the column portion 5b. When viewed from the front, the roller support portion 5c extends laterally in parallel with the roller support portion 5c, and the roller support portion 5c is formed into a substantially U-shape when viewed from the front, and an overhead wire guide roller 6 is removably attached to the upper surface of the tip portion of the roller support portion 5c.

Therefore, the column portion 5b of the suspension post 5 is displaced in the lateral direction by an amount relative to a line connecting the support point of the suspension mast receiver 4 and the center point of the overhead wire guide roller 6.

Reference numeral 9 denotes a cylinder provided between the outer column 1 and the inner column 2 or the guide support part 3 fixed to the inner column 2, and the cylinder 9 allows the inner column 2 and each member supported thereto to move relative to the outer column 1. It is designed to be able to go up and down.

A more specific configuration of the overhead wire suspension system shown in FIG.
As shown in the figure.

That is, the mounting portion 5a of the suspended mast 5 is fixed to the suspended mast receiver 4 by a fixing pin 10 and a removable pin 11, and by removing the pin 11, the suspended mast 5 is attached around the fixing pin 10.
By rotating it 800 times and inserting pin 11,
The suspension mast 5 can be fixed in the opposite direction to that shown.

4a and 4b are holes into which the pins 11 are inserted.

A prismatic guide part 5a/ is provided at the tip of the mounting part 5a, and the pillar part 5b is fitted and supported by the guide part 5a' so that it can move up and down.
2, the pillar part 5b and the roller support part 5c integral therewith are moved up and down with respect to the mounting part 5a, and by tightening the fixing device 13, the pillar part 5b is restrained from rising and falling with respect to the mounting part 5a. It is now possible to do so.

The operation of the overhead wire suspension system according to the present invention constructed as described above will be explained with reference to FIGS. 1 and 2.

When suspending the overhead line, as shown in FIG. Adjust so that it is located above I-B.

Then, a suspension wire is pulled out from a drum (not shown) mounted on the work vehicle, hung on the roller 6, and its tip is fixed to a bracket on a certain telephone pole, and the work vehicle is advanced while applying a predetermined braking force to the drum. Then, one after another, the brackets of telephone pole A - B
A suspension line is hung on the suspension part C provided on the top surface, but at this time, as shown in the first diagram, the column part 5b of the suspension mast 5 is displaced by l in the vehicle width direction from the suspension line guide part formed by the roller 6. Therefore, the column part 5b does not interfere with the bracket B, and the suspended mast 5 is simply moved in the lateral direction by the amount of lateral displacement of the suspended part C, and the rest is done by the operation of the cylinder 9 for h. Only by vertically moving up and down, the suspension wires guided by the rollers 6 and pulled out with a predetermined tension as the vehicle advances can be successively applied to the suspension portion C of the bracket I-B.

Therefore, the lateral stroke of the suspension mast 5 needs to be very short, and in practice, a stroke of about 500 mm to the left and right from the center of the rail is sufficient, and the entire suspension system can be significantly downsized. It is something.

When suspending the contact wire, first the rollers 6 are replaced from steel rollers for the suspension wire to rubber rollers for the contact wire.

Then, loosen the fixing device 13 and operate the manual winch 12 to lower the column part 5b, adjust the roller support part 5c to be located at the bottom of the bracket B, and in this position fixing device 1
Fix at step 3.

The rest is carried out in the same manner as in the case of the suspension wire, and the work vehicle is moved forward, and the contact wire E is suspended on the suspension wire using a hanger or the like.

The mounting direction of the bracket B is reversed for the up line and the down line, but in that case, remove the pin 11 shown in Fig. 2 from one hole 4a, rotate the suspension mast 5 1800 times, and insert the pin 11 into the other hole 4b. By fixing the suspension mast 5 in the opposite direction by inserting the suspension mast 5 in the opposite direction, it is possible to perform suspension work for overhead contact lines such as suspension lines and trolley wires in the same manner as described above.

The manual operation of the suspended mast 5 and the overhead wire work as described above are performed on a workbench (not shown) provided on the work vehicle.

Cylinder 9 is used during general driving of the work vehicle other than when working on overhead wire suspension.
is contracted and the pillar portion 5b of the suspension mast 5 is also lowered to bring these devices within the limits of the vehicle.

As described above, according to the present invention, the suspended mast has a substantially U-shape when viewed from the front, and the pillar portion is displaced in the width direction of the car body from the guide roller portion that guides the overhead contact line, thereby increasing the amount of the displacement. It is possible to increase the lateral stroke, shorten the movement stroke of the suspension mast in the width direction of the vehicle, and downsize the entire device.It also simplifies the work of suspending contact lines, making it practical. This can have a very strong effect.

Furthermore, by rotating the suspended mast 1800 times, the direction of the bracket on the telephone pole can be reversed, making it possible to perform vertical training.
It is also possible to improve the efficiency of suspension work.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention, and FIG. 2 is a perspective view showing a specific example of the configuration of the apparatus shown in FIG. 1... Outer pillar, 2... Inner pillar, 3...
・・Guide support part, 4・・Suspension mast holder, 5・・・
... Suspended mast, 5a... Mounting part, 5b.
...Column part, 5c...Tara support part, 6...
...Guide roller, 7...Screw shaft, 8...
..., drive source, 9... cylinder, 10...
...Fixing pin, 11...Insertion/extraction pin, 12
...Manual winch, 13...Fixing device, 14...Overhead line work vehicle, A...Telephone pole,
B...Bracket.

Claims (1)

[Scope of Claims] 1. A suspension post equipped on an overhead line work vehicle and provided with guide rollers for the overhead contact line to be suspended, with its column section positioned in the width direction of the vehicle from the position of the guide roller provided above the column section. 1. An overhead wire suspension system, characterized in that the suspension post is configured in a shape that is displaced by a certain amount, and is mounted on a overhead wire work vehicle so that the suspension post can be controlled in movement in the vehicle width direction and in the vertical direction. 2. The overhead line suspension system according to claim 1, wherein the suspension mast is rotated 1800 times to reverse the direction of displacement of the column relative to the guide roller. 3. Attach the attachment section at the bottom of the column of the suspended mast to the suspension mast holder, which is attached so as to be movable in the width direction and vertical direction on the overhead line work vehicle, and control the column section to move up and down relative to the attachment section. An overhead wire suspension system according to claim 1 or 2, characterized in that the overhead wire suspension system is configured to obtain the following: 4. An overhead wire suspension system according to any one of claims 1 to 3, characterized in that the guide roller is removably attached to a roller support section provided at the upper part of the suspended mast column section.