JPH043526Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention of the present application is mainly used in the work of replacing power distribution lines, and in light of recent social conditions, it is intended to perform work efficiently without power outages. It was made by

(Conventional technology) To replace lines without power outage,
A bypass line will be temporarily installed below the old line that is energized in the span scheduled for construction, and this bypass line will be energized during the work to remove the old line and replace it with the new line, and after the new line installation is complete, it will be installed on the next span of construction. A construction method was used in which the bridge was moved one after another, and the construction span was usually about 4 to 5 spans. A messenger wire is tensioned between the pillars at both ends, and the middle pillar is
By supporting the wire with a passing wheel as shown in No. 31073, and passing the supporting wheel that has slid on the wire while holding the bypass wire, the supporting metal at the intermediate column can be removed. This eliminated the need to change cars and made it possible to extend bypass lines over multiple spans all at once, and was highly effective.

(Problem that the invention aims to solve) However, the messenger wire was supported by a passing pulley only by an intermediate column. It is preferable that the messenger wire in and around the passing pulley be as straight as possible.
It was impossible for the messenger wire that rose from the ground to make a sharp turn at the passing pulley installed on the first utility pole in the construction span, considering the passing of the gold wheel sliding on the wire. Therefore, in order to prevent the wire from sagging, we had to suspend a large number of supporting metal cars to hold the bypass line from the messenger wire that was stretched at the position of the bypass line, which needed to be stretched at a fairly high position on the utility pole, and also installed it on the ground. The work of holding the bypass wire rising from the drum on the support wheel is work on a pillar, and a considerable number of support cars are suspended from the messenger wire to hold the bypass wire. Holding him up on the pillar was a grueling task. Furthermore, the mounting angle of the passing pulley provided on the intermediate column required delicate adjustment. In other words, if the utility poles in a construction span are lined up in a straight line, it is easy to receive the support wheel into the passing pulley and send it out to the next span, but if the utility pole row has a curve, it is easy to connect them. The support wheel pulled by the rope would tilt toward the inside of the curve, making it difficult to pass smoothly; this could also be the case depending on the speed of the rope.

(Means for solving the problems) Therefore, in the present invention, the structure of the passing pulley used in the above-mentioned invention is incorporated into each support wheel to solve the above-mentioned problems and achieve the same purpose. .

(Function) In other words, the opposing surfaces of the plurality of sides are sandwiched between grooves arranged radially on two discs on which the frame supporting the roller sliding on the messenger wire is fixed at a predetermined interval. The bypass wire is supported freely between the sliding grooves provided in the rotating plate, and the bypass wire is supported on the rollers installed at the bottom of the frame provided at both ends of the connecting shaft of the rotary plate, and the Messenger wire is supported at the wire starting column or intermediate column. The support wheel of the present invention that has reached this point receives the support in its groove, and as the roller is further pulled and advances, the rotary plate rotates, and it moves beyond the support to the next span. That's why.

(Example) The present invention has a fitting groove 2 that spreads radially from the center.
Two rotary plates 3 having a rotary plate 3 are fixed at a distance 4,
At both ends of the shaft 4 are approximately V-shaped frames 1, 1'.
At the same time, lock the shafts 4. A wire receiving roller 5 for holding a bypass wire is fixed 6 at the lower part of the frames 1, 1'. Sliding grooves 8 are formed concentrically on sides 7 between the fitting grooves 2 located on the peripheries of opposing surfaces of both rotating plates 3 and 3'. The side 7 that corresponds to the shape of the sliding groove 8 of both rotary plates 3, 3' and is sandwiched by the fitting groove 2
An arc-shaped collar 11 long enough to engage simultaneously with the three
A roller frame 9 having support rollers 10, 10 near both ends in the length direction is provided between both rotary plates 3, 3' so as to be freely movable regardless of the rotation of the rotary plates 3, 3'. to hold.

Further, a spacer body 13 having connecting rope locking holes 12 on both sides for maintaining a predetermined distance between the two rotary plates 3, 3' is fixed to the rotary plate 3 at the same time as the rotary plate 3. This axis 4
is secured to the frames 1 and 1' by tightening a nut on one side, and a coil spring 15 is arranged on the other side, and a stepped knob 14 is fitted onto the spring 15, so that the knob 14 is engaged with the shaft 4 toward the center. The notch 16 provided in the frame 1, which is rotatable around the shaft 6 of the wire receiving roller 5, is constantly pressed against the shaft 4, and when it is necessary to open the frame 1, the knob 14 is moved by the spring 15. It is configured to be able to be freely engaged and disengaged by pulling outward against the force. As shown in FIG. 7, the support wheel according to the present invention having the above-mentioned configuration is suspended on the messenger wire, and the bypass wire is supported on the wire receiving roller 5 and connected at predetermined intervals with the connecting rope 17. A tie-down fitting as shown in Fig. 6 is used to hold the messenger wire at the end post at which the wire starts to be extended, and a lead-in part is provided that is inclined from the ground to the hold-down fitting. A retaining metal fitting is also fixed to the end of this introduction part, and a messenger wire is supported by an intermediate supporting metal fitting on each intermediate pillar. Both the retaining metal fitting and the intermediate supporting metal fitting are arranged so that the support frame 18 corresponding to the fitting groove 2 of the rotary plate 3 of the supporting metal wheel is perpendicular to the extending direction of the messenger wire, allowing the supporting metal wheel to pass through. It consists of In other words, the wire receiving roller 5 of the supporting metal train that is inserted from the retaining metal fitting at the end of the introduction part on the ground
By passing the bypass wire through the top, or by opening frame 1' and fitting it in, connecting the towline to the first supporting wheel and pulling it with a winch, the supporting wheel will successively ascend the wire at the introduction section and attach to the tether. When it reaches the metal fitting, the first support frame 18 is received in the fitting groove 2 of the rotary plate 3, and it is pulled further apart from the roller frame 9 suspended from the messenger wire.
The rotary plate 3 rotates and sends the support frame 18 out of the insertion groove 2, passing through it one after another in this manner until it reaches the utility pole at the end of the construction span.

(Effect of the invention) By adopting the support wheel in which the support roller 10 is freely movable between the rotary plates 3 and 3' having the insertion groove 2, as shown in FIG. 5 and FIG. The function of receiving, feeding, and passing the intermediate support fitting of the messenger wire or the support frame 18 of the retaining fitting into the fitting groove 2 of the rotary plates 3, 3' can be easily obtained. In addition, unlike the conventional example in which a passing pulley is used as an intermediate support point, rotating plates 3 and 3' each having a fitting groove 2 for each support wheel holding a bypass wire are used, so that the messenger Both the wire support point side and the metal wheel side can be made smaller. If a rotary plate 3, 3' having a fitting groove 2 on the support point side is used, it is necessary to take into consideration collisions with the rotary plate when a large number of metal wheels pass, and Due to the weight of the Yarwire and the weight of the metal wheels mounted on it, a sturdy structure has to be used, making it unavoidably large.As a result, it does not fit well when installed on a curved pillar, resulting in poor passage of the metal wheels. This was a cause of the problem, but such problems can be resolved by adopting rotary plates 3, 3' that have fitting grooves 2 on the support wheel that moves on the messenger wire. It is.

The support frame 18 of the retaining metal fitting, through which the metal wheel first passes after climbing up the introduction part from the ground, is also a small diameter round bar like the intermediate supporting metal fitting, so it can pass easily, and it can easily pass through the support frame 18. Suspend the gold wheel at the end of the tie,
Work at heights to hold bypass cables can be avoided.

As mentioned above, there is no need to replace the metal wheel at the wire support point of each column in the extension span, and there is no need to work at heights from the ground to the terminal side.
The line can be extended all at once, making it possible to shorten work time and reduce the number of workers.

[Brief explanation of the drawing]

Figure 1 is a left side view of the present project. Figure 2 is a front view of the project. FIG. 3 is an enlarged left side view with a portion of the opening section cut away. FIG. 4 is a left side view of the main supporting metal wheel passing through the intermediate supporting metal fittings. FIG. 5 is a front view of the main supporting metal wheel passing through the intermediate supporting metal fittings. Figure 6 is a front view of the retaining fitting. FIG. 7 is a usage state diagram. Symbols in the diagram: 1, 1'... Frame, 2... Fitting groove, 3, 3' rotating plate, 4, 6... Pivotal stop, 5...
Line receiving roller, 7... side, 8... sliding groove, 9...
Roller frame, 10...Support roller, 11...
Collar, 12... Connecting rope locking hole, 13... Spacer body.

Claims (1)

[Scope of utility model registration request] 2 having a fitting groove 2 that spreads radially from the center
A spacer body 13 having connecting rope locking holes 12 on both sides is interposed between the rotary plates 3 and 3', and a wire receiving roller 5 is attached to the lower part of the upper end of the frame 1 and 1' on the outside. At the same time, a sliding groove 8 is provided in an annular manner at the end of each side 7 sandwiched by the fitting groove 2 on the opposing surfaces of both rotary plates 3, 3'. A roller frame 9, which has arc-shaped flanges 11 on both sides with a length that simultaneously engages at least three of the sliding grooves 8 of 3', is freely sandwiched between both rotary plates 3 and 3'. A bypass line support metal characterized in that a support roller 10 in a body 9 is slid on the main rope, and the main rope support that crosses the surfaces of both rotary plates 3 and 3' is received in the insertion groove 2 and sent out to pass through. car.