JPH0448085Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a carrier for conveying and extending power transmission lines.

(Prior technology) When installing or re-lining power transmission lines, instead of the traditional pull-out method or hanging method, a support line stretched between the extension lines or a carrier connected to the old line at regular intervals is used for mounting the line. However, a cableway-type conveyance method was developed in which the new line is held and moved in a group of carriers, and the line is conveyed and extended over the entire length of the line span over each intermediate tower in one go. This construction method causes very little damage to the new line as it does not support the new line with metal wheels or apply excessive tension, so it is ideal for extending OPGW or fin-prone snow-covered electric lines. It has been considered as a construction method.

(Problem to be solved by the invention) However, it is desired that the carrier used in this cableway type conveyance method has a function of releasing the new line after the new line has been conveyed to a predetermined position in the extension span. It was hot. In other words, the group of carriers holding the new line and moving it to a predetermined position along the span of the new line stops, transfers the new line to a metal wheel at each tower, and holds both ends to the fixed yoke. Line-holding rollers suspended from the carrier were continuous in the gap, making it impossible for workers to step onto the new line and release the line-holding rollers.

Therefore, tension is applied to both ends of the new line to release the load on the wire holding rollers of the carriers, and the unloaded carriers are pulled out and collected on the support wire, and then tension is applied to the new line, which is now in a stand-alone state. A construction method was devised in which the material was added and raised. However, there remained a problem in waiting for the collected carriers on each steel tower in the extension span and releasing the line holding rollers to detach the new line. In other words, the groups of carriers are connected at predetermined intervals by connecting ropes, and the distance between the towers on the extension line is not constant. Therefore, if you try to collect the carriers for that span from each tower, the carriers will end up at a certain tower. However, while the release work was being carried out, the carriers had not yet reached the other towers, and even after waiting for the work to be completed, the connecting rope was reeled in and recovery was resumed.
The carrier ended up at another steel tower and work was being carried out, and even though the carrier was approaching 1 to 2 meters in front of the tower,
There were cases where the release work could not be carried out. Depending on the arrangement of the span steel towers, this situation could mean that winding of the connecting rope would have to be stopped every few meters, resulting in a significant time loss.

(Means for Solving the Problems) Therefore, the above-mentioned problems are solved by making the line holding rollers of each carrier automatically open type. The automatic release mechanism used in the present invention, when temporarily lifting after transportation, attaches an abutment plate to the point near the OPGW tower, protrudes a release pin from the tip of the wire holding roller, and collects the carrier group. The collision between the line holding roller and the contact plate, which approaches the OPGW while holding it under no load, activates the release pin.
The line holding rollers are released one after another.

(Embodiment) To show an embodiment of the present invention, the pulley part B is opened radially from near the center of the circle toward the circumference, and is provided with a predetermined number of fitting grooves 15. A circular arc shape corresponding to each sliding holding part 17 is placed on both sides between two rotary plates 20 which are kept at a predetermined interval by opposing sliding holding parts 17 provided concentrically on the edges of each side 16. A guide body 1 provided with a sliding collar 18 having a length that simultaneously engages at least two of the sides 16.
9 are held by fitting their sliding collars 18 into the sliding holding part 17 so as to be freely movable.

One of the guide bodies 19 is the support line W or the old line G
It is used for riding on cars, and has rollers 21 at both ends. The other one is for hanging the holding roller part A, and connects the wire holding roller part A through a connecting member 13 made of a rope. As described above, the centers of the two rotary plates 20 that sandwich the two guide bodies 19 are pivotally supported together with the connecting rope holder 22 arranged between the rotary plates 20, and the shaft ends protruding from both rotary plates 20 are This configuration is provided with guide rollers 23 for sliding the guide rail of the support line support fitting H.

The line-holding roller section A has upper rollers 2 each pivoted at the upper ends between two roller side plates 1 made of plate materials, and a connecting member 1 is provided at the center position between both rollers 2.
It has a connecting part 3 with 3.

The lower rollers 4 are provided at both ends of the lower part of the roller side plate 1. One end of a rotating shaft 41, which is the axis of the lower roller 4, is supported in a hinged manner, and the other end is supported with the hinge part of the rotating shaft 41 as a base point. It has a structure that can be freely engaged and detached so that it can be rotated. The detachable part of this detachable structure, that is, the rotation of the rotation shaft 41 is controlled by the line holding roller part A.
It is an object of the present invention to perform this by the contact of the more protruding opening pin 5 with another member.

Pin guide cylinder 6 at both ends of the lower part of the roller side plate 1
A support plate guide 8 is provided below the pin guide cylinder 6, and has a U-shaped cross section and a cutout groove 7 directed upward from the center of the bottom of the U. The open pin 5 passes through the pin guide cylinder 6, and it is configured to be longer than the length between both ends of the pin guide cylinders 6 located at both ends of the roller side plate 1, with one end protruding and the other being pulled out with a nut or the like. Secure with a stopper.

A cylindrical pin guide 9 is inserted into the open pin 5 appearing between both pin guide tubes 6, and a shaft support plate 11 is connected to the lower part, and the shaft support plate 11 is connected to the U of the support plate guide 8 described above. The composition should fit within the characters. In order to support the rotating shaft 41 within the notch groove 7 of the support plate guide 8, a hook-shaped opening 10 is provided in the direction in which the release pin 5 projects. The fixing positions of the pin guide 9 and the shaft support plate 11 connected to the lower part of the pin guide 9 to the open pin 5 are opposite to each other with the support plate guide 8 sandwiched between the two support plate guides 8, 8 with respect to the protrusion. A spring 51 is disposed on the release pin 5, and its elasticity maintains the protruding state under normal conditions. Therefore, under normal conditions, both rotating shafts 41 of the lower roller 4 are supported within the openings 10 of the shaft support plate 11.

Further, the two rotating shafts 41 are connected by a shaft connecting plate 14 in consideration of operability.

Further, a vertical roller 12 is provided between the upper and lower rollers 2 and 4 of both roller side plates 1, and the upper roller 2, lower roller 4, and vertical roller 12 form a line holding space.

The conveyor line release type carriers of the present invention having the above configuration are mounted on the support line W, and each is connected by a connecting rope R to hold the new line OPGW etc. in the line holding roller A, and the group of carriers is Once the new line has been placed over the entire length of the track span, the movement of the carrier group will be stopped.
Re-support the new line OPGW to gold car C at each steel tower T,
The new line OPGW was temporarily raised by applying tension to both ends.
Therefore, the connecting member 13 of the new wire OPGW that had been held up until now has become slack due to temporary lifting, and the line holding roller part A, whose vertical position has been reversed as shown in Fig. 7, is recovered by winding the connecting rope R. It is.

When re-supporting the new line OPGW to the gold wheel C mentioned above, the contact plate 30 shown in Figures 5 and 6 is attached to the new line OPGW.
The lower roller 4 is attached to the side of the steel tower, and the rotation shaft 41 of the lower roller 4 is released by contact between the release pin 5 protruding from the wire holding roller part A and the corresponding contact plate 30,
By rotating the shaft 41, the new line OPGW is released and removed.

(Effect of the invention) By using the invention as described above,
When collecting temporary hoisting equipment for new lines, workers climb up to the top of each steel tower and stop winding the connecting rope every few meters. This work can now be done automatically and continuously without stopping winding. In addition, it eliminates the need for workers to work on each tower, which has many advantages, such as improved work efficiency, prevention of fall accidents, and economic effects.

[Brief explanation of the drawing]

Fig. 1 is a front view of the present invention, Fig. 2 is an enlarged right side view of the pulley section, Fig. 3 is a front view of the line holding roller section,
Figure 4 is a left side view, Figure 5 is a front view of the contact plate, Figure 6 is a right side view, Figure 7 is an explanatory diagram of the usage procedure, and Figure 8 is the line holding roller part and the contact plate. Explanatory perspective view. Symbols in the figure, A... line holding roller section, B...
Pulley section, C...metal wheel, G...old line, H...support metal fittings, R...connection rope, T...steel tower, W...support line, OPGW...new line (optical fiber composite overhead ground wire) ), 1...roller side plate, 2...upper roller,
3... Connecting portion, 4... Lower roller, 41... Rotating shaft, 5... Opening pin, 51... Spring, 6... Pin guide tube, 7... Notch groove, 8... Support plate guide, 9... Pin guide, 10... Opening, 11...
... Shaft support plate, 12 ... Vertical roller, 13 ... Connection material, 15 ... Fitting groove, 16 ... Side, 17 ... Sliding holding part, 18 ... Sliding collar, 19 ... Guide body,
20... Rotating plate, 21... Roller, 22... Connecting rope holder, 23... Guide roller, 30
...Abutting plate.

Claims (1)

[Claims for Utility Model Registration] 1. Connecting the wire holding roller portion A to the pulley portion B that rides on the support wire W or the old wire G via the connecting member 13, and rotating the wire holding roller portion A. A shaft support plate 11 supporting one side of the shaft 41 and a release pin 5 are arranged in series, and a spring 51 is applied to the release pin 5 so as to protrude from the line holding roller part A.
comes into contact with another member, compressing the spring 51 and moving the shaft support plate 11, releasing support for one of the rotation shafts 41 of the lower roller 4, and releasing the support of one of the rotation shafts 41.
A transport line release type carrier characterized in that a lower roller 4 rotates from the other end to open a line holding space. 2 The wire holding roller part A has two roller side plates 1
Upper rollers 2 are each pivotally supported at both ends of the upper part between them, and at both ends of the lower part, one roller side plate 1 is rotatably engaged, and the other roller side plate 1 is rotatably engaged with one roller side plate 1.
A shaft support plate 1 held by support plate guides 8 provided at both ends and having an opening 10 in each notch groove 7 of the support plate guide 8 in the same direction as the protruding direction of the release pin 5.
1 is inserted, the spring 51 is biased, and the wire holding roller part A is slidably inserted into the pin guide cylinder 6.
The opening pin 5 whose tip protrudes by a predetermined length is connected to the shaft support plate 11, and the lower roller 4 is provided at the center of the rotating shaft 41 that is locked to the opening 10 of the shaft support plate 11. Vertical rollers 12 are provided at predetermined positions on both roller side plates 1, and the line holding space formed by the upper roller 2, lower roller 4, and vertical roller 12 is resisted by the spring 51 caused by the contact of the release pin 5 with other members. Claims for registration of a utility model characterized in that the rotation shaft 41 is disengaged from the opening 10 of the shaft support plate 11 by this movement, and the line holding space is opened by the rotation of the rotation shaft 41. The conveyor line release type carrier according to item 1.