JP5870180B2 - Transmission line transfer method and transfer device - Google Patents

Description

  The present invention relates to a transmission line transfer method that uses a self-supporting protective device to change the mounting position of the transmission line used to transfer the transmission line from one span to the other span, and The present invention relates to a transfer device.

  In transfer and extension work where there are important facilities such as railways, main roads, and transmission and distribution lines, there is a concern that wires may sag even when the hanging metal construction method is used to ensure separation. For this reason, a protective scaffolding has been constructed and a net using an insulating rope is stretched. In particular, railway operators usually require construction in the nighttime zone where there is no train running in addition to the installation of protective scaffolding from the viewpoint of ensuring operational safety. In urban areas, it is often difficult to secure a site for installing a protective scaffold. On the other hand, in the case of crossing an extra high power transmission line in a mountainous area, it is necessary to construct a protective scaffold much higher than that of the extra high power transmission line, and there are problems in securing the installation site and cost.

  On the other hand, by using a self-supporting (independence support) telescopic device, a construction method has been proposed that provides safe and efficient transfer work without constructing a protective scaffold in locations where important facilities are located. . As a method similar to this method, a slide transfer method, a looper method, a transmission line vertical transfer method and a carrier transfer method are known. Among these, the slide transfer method is a method in which a parent wire is stretched between a new steel tower and an existing steel tower, and is moved using a support pulley provided on a gold wheel movable along the parent wire ( For example, see Patent Document 1).

  In the looper method, two wires are connected by a looper device in the transfer of a multi-conductor transmission line, and each universal metal wheel is connected along a wire by a fixed rope. This is a construction method that repeats the transfer and temporary tightening line together with the fixed rope like a scale insect (see, for example, Patent Document 2). In addition, the transmission line vertical transfer method is a method of transferring one or the other attachment location of any one of the plurality of wires installed between the steel towers to a steel tower higher than the steel tower (for example, (See Patent Document 3). Further, the carrier transfer method is a method similar to the slide transfer method, and enables the movement of the transfer wire in the height direction by using a carrier used for transportation (see, for example, Patent Document 4). ).

Japanese Patent No. 3442638 Japanese Patent No. 3742376 JP 2010-142005 A Japanese Patent Laid-Open No. 2003-180009

However, in the slide transfer method among the conventional methods, it is necessary to put in and out the wire for the change in the actual length of the wire, and the support wire mounting position, separation at the time of transfer, tower strength, etc. Consideration is required, and preparation work takes more time than usual.
In addition, in the looper method, it is necessary to repeat the transfer and temporary tightening of two wires like a scale insect, but it is necessary to carry out the transfer and temporary tightening with a fixed rope. There is a disadvantage that construction at a crossing point strongly requires construction of a protective scaffold.

Moreover, in the electric wire vertical transfer method, it is necessary to expand the longline type suspension wheel every two wires and repeat the electric wire pulling up. Many special tools are required, such as empty caster wheels, longline-type suspended vehicles, upper wire wheels for transfer lines, lower wire wheels for transfer lines, operation ropes, and deployment ropes. It is necessary to adjust the actual wire length by adjusting between the semi-gold car and the cam along, and double protection is required to prevent runaway.
Furthermore, in the carrier transfer method, in addition to the time required for the preparation work, it is easy to suppress the drooping of the wire by raising and lowering the moving wire, but there are inconveniences such as the dripping cannot be completely prevented. there were.

  The present invention solves the above-mentioned conventional problems, and the purpose of the present invention is to provide a transmission line between a plurality of transmission lines even if one of the transmission lines hangs down during the transfer. It is possible to suppress the drooping by the transfer auxiliary device attached every predetermined length of the wire, and to absorb the shock accompanying the drooping of the transmission line while maintaining the transmission line at a predetermined interval, and further support by the transfer auxiliary device Provided is a transmission line transfer device and a transfer method that can safely and efficiently transfer a plurality of generated transmission lines as a set from one span to the other span by a simple operation. There is.

In order to achieve the above object, a transmission line transfer method according to the present invention includes a gold wheel that holds a power transmission line, and a connection cord that is connected to the gold wheel so that the connection cord can be wound and pulled out, and a direction in which the wire is pulled out. Preparing a plurality of sets of first movement assist devices that are connected in sequence with a first connection cord storage portion that locks the drawer when the acceleration of the motor exceeds a predetermined value;
A movement assisting device attaching step for attaching the first transfer assisting device in which a plurality of sets are connected in sequence between a plurality of transmission lines installed between the first diameters;
A power transmission line support step for supporting each power transmission line on the gold wheel by a support member connected between a part of the gold wheel and a predetermined part on the power transmission line other than the holding portion by the gold wheel,
Holding the wire cord in the uppermost group of the first transfer assisting devices and storing the connecting cord so that it can be wound and pulled out, and locks the drawer when the acceleration in the pulling direction exceeds a predetermined value. A connecting step of connecting via a second movement assisting device having a second connecting cord storage portion;
A plurality of power transmission lines held by the respective gold wheels by a predetermined expansion and contraction of the first shift assisting device and the second shift assisting device attached between the power transmission lines are connected from the first span to the second diameter. A transfer process for transferring between,
It is characterized by providing. In addition, you may hold | maintain via a holding material, when hold | maintaining the gold wheel of a 1st transfer assistance apparatus to a power transmission line.

Thereby, even if a part of the transmission line is cut or loosened, it is possible to prevent the plurality of transmission lines from interfering with each other or drooping greatly. Moreover, even if the transmission line is about to hang down, the hang-up can be prevented by the locking action of the connecting cord. Furthermore, the shock applied to the power transmission line when the connection cord is locked can be suppressed by the shock absorber, and the power transmission line can be prevented from jumping due to the reaction of the shock.
In addition, by using a single transmission line to move from the existing tower to the new tower, multiple simultaneous transfers are possible, and multiple transmission lines can be transferred at once to the new span. be able to. In this case, each power transmission line is autonomously supported by a support member interposed between the gold wheels.
Therefore, in this transfer method, it is possible to achieve both safety and efficiency of transfer work and reduction of work cost.

Further, the power transmission line shift device according to the present invention accommodates the gold wheel holding the power transmission line, the shock absorber, and the connection cord so that the connection cord can be wound and pulled out, and the acceleration in the pulling direction exceeds a predetermined value. A plurality of sets of first transfer auxiliary devices that are connected in order with a first connection cord storage portion that locks the drawer;
These first transfer auxiliary devices are connected in order, and the first transfer auxiliary device connected to the top is connected to the gold wheel so that it can be suspended on the upper transmission line. And a second transfer auxiliary device having a second connection cord storage portion for storing the connection cord so that it can be wound and pulled out, and locking the drawer when the acceleration in the pull-out direction exceeds a predetermined value;
A supporting member connected between a part of the gold wheel and a predetermined part on the power transmission line other than the holding part by the gold wheel, and supporting the power transmission line on the gold wheel;
It is characterized by comprising.

With this configuration, the first transfer assist device and the second shift assist device maintain a predetermined distance between the plurality of transmission lines and the transmission lines that are to be transferred within the extendable limit of the self-supporting extension / contraction function. Thus, even if the transmission line is partially cut or loosened, it is possible to avoid mutual interference or drooping greatly.
Moreover, even if the transmission line attempts to hang down at an acceleration exceeding a predetermined value, the drooping of the transmission line is rapidly prevented by the connection cord locking function of the connection cord storage unit, and a large fluctuation of the transmission line can be avoided.
Furthermore, the shock applied to the power transmission line by the locking of the connecting cord can be absorbed by the shock absorber, and it is possible to prevent the power transmission line from bouncing for reaction of the shock.

On the other hand, by moving one retained transmission line from an existing tower to a new tower, a plurality of transmission lines are maintained at a predetermined distance between the new installation lines while maintaining the predetermined interval. Easy transfer.
In this case, each transmission line is autonomously supported (suspended) by the support member interposed between the gold wheel and, for example, conventionally, a fixed rope (transmission line support member) arranged in parallel for each transmission line is necessary. Therefore, the efficiency and economic efficiency of the transfer work can be greatly improved.

  Moreover, the power line transfer device according to the present invention is characterized in that the support member is a rubber string. As a result, handling of the support member can be facilitated, and this can be obtained at a low cost, and each power transmission line can be supported flexibly with respect to the gold wheel, and the displacement of the relative position of the power transmission line with respect to the gold wheel can also be reduced. The transmission line can be supported reliably and stably.

  In the power transmission line shift device according to the present invention, the support member is connected between a part of the gold wheel and two symmetrical positions on the power transmission line through which the gold wheel is interposed. And Thereby, it is possible to hold the power transmission line so that the displacement of the relative position of the power transmission line with respect to the gold wheel is always kept at a regular position, and it is possible to minimize the positional deviation for each power transmission line at the time of transfer. .

  According to the present invention, by a plurality of sets of transfer auxiliary devices attached between transmission lines at predetermined lengths of a plurality of transmission lines, the drooping of the transmission lines occurring at the time of the transfer is suppressed and the drooping is accompanied. Shock can be suppressed, and a plurality of transmission lines can be set as one set, and these can be safely and economically transferred from one span to the other span with a simple operation.

  The present invention has been briefly described above. The best mode for carrying out the present invention will be described below in detail with reference to the accompanying drawings.

It is a front view which shows the transfer device of the power transmission line by embodiment of this invention. It is explanatory drawing which shows the principal part of the wire transfer apparatus in FIG. It is a transfer process figure which shows the transfer method of the power transmission line by embodiment of this invention. It is a transfer process figure which shows the transfer method of the power transmission line by embodiment of this invention. It is a transfer process figure which shows the transfer method of the power transmission line by embodiment of this invention. It is a transfer process figure which shows the transfer method of the power transmission line by embodiment of this invention. It is a transfer process figure which shows the transfer method of the power transmission line by embodiment of this invention.

  Hereinafter, a power transmission line shifting apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

  FIG. 1 shows a transmission line shifting device according to the present embodiment. The power transmission line transfer device includes a first movement auxiliary device A and a second movement auxiliary device B. Among these, the first movement assisting device A is prepared in three sets (for three stages), and each is connected in series. Each of the first movement assist devices A has a configuration in which a gold wheel 11, a shock absorber 12, a first connection cord storage portion 13, and a connection cord 14 are connected in order. The gold wheel 11 has a ring shape as a whole, and allows the power transmission line to be inserted into the ring-shaped portion and functions to support the power transmission line in a movable manner. Accordingly, as shown in the figure, the three power transmission lines 15 are supported by the respective gold wheels 11 of the three sets of the first movement assisting device A.

The shock absorber 12 is connected to the lower part of the gold wheel 11 so as to relieve the impact applied to the first movement assisting device A and the second movement assisting device B by the suspension of the transmission line following the drooping as described later. To work.
As the shock absorber 12, for example, a pneumatic type or a hydraulic type can be used. The first connection cord storage portion 13 is coupled to the lower part of the shock absorber 12 and stores the connection cord 14 so that the connection cord 14 can be wound and pulled out (rewinded).
The first connecting cord storage portion 13 has a function of locking (stopping) the drawing of the connecting cord 14 when the acceleration in the drawing direction of the connecting cord 14 exceeds a predetermined value.

  In addition, in this 1st connection cord storage part 13, the connection cord 14 is wound in the shape of a spiral, and is always urged | biased by the winding direction by the spring member which is not shown in figure. The tip of the connection cord 14 drawn out from the first connection cord storage portion 13 is connected to the gold wheel 11 of the first movement assisting device A in the next set (lower stage). In this manner, the gold wheel 11, the shock absorber 12, the first connection cord storage portion 13, and the connection cord 14 are serially coupled to constitute the first transfer auxiliary device A.

On the other hand, the second transfer auxiliary device B is connected to the uppermost one of the three sets of the first movement auxiliary devices A. That is, the second transfer assisting device B includes a connection cord 16 and a connection cord storage portion 17, and the connection cord storage portion 17 stores the connection cord 16 so that the connection cord 16 can be wound and pulled out (rewinded). Further, the connection cord storage portion 17 has a function of locking (stopping) the drawer when the acceleration in the pull-out direction of the connection cord 16 exceeds a predetermined value. The leading end of the connecting cord on the drawing side is connected to the gold wheel 11 of the uppermost one of the three sets of the first movement assisting device A.
The mounting position of the second transfer assisting device B is not necessarily limited to the uppermost position.

  A clamp 19 is connected to the connection cord storage portion 17 directly or via a shock absorber 18 shown in the figure. The clamp 19 can be suspended on a holding member 20 suspended above the power transmission line 15 (the upper end of the steel tower). Accordingly, the end of the connection cord 16 of the second movement assisting device B is connected to the gold wheel 11 of the first movement assisting device A, and the connection cord storage portion 17 or the shock absorber 18 of the second movement assisting device B is connected. By connecting the clamp 19 to the holding member 20 and connecting the clamp 19 to the holding member 20, the three power transmission lines 15 are connected to the holding member 20 via the first movement auxiliary device A and the second movement auxiliary device B. It can be suspended (suspended) in a state where a predetermined interval is maintained.

  Further, between the predetermined part p of the gold wheel 11 supporting each power transmission line 15 and a part other than the holding part of the power transmission line 15 by the gold wheel 11, here the symmetry on the power transmission line 15 centering on the gold line 11. As shown in FIG. 2, a support member 21 that supports the power transmission line 15 is connected between the positions q and r. As the support member 21, for example, a rubber string having a large frictional resistance and easy to handle may be used. In this case, the power transmission line 15 can be flexibly supported by the gold wheel 11, and the power transmission line 15 The power transmission line 15 can be stably held at a predetermined support position in response to a slight displacement between the wheel 11 and the gold wheel 11.

Next, the transfer procedure of the power transmission line 15 by the transfer device of this embodiment will be described with reference to FIGS. The transfer method of this embodiment is a method of transferring a plurality of power transmission lines 15 at once from the existing span to the new span. Here, as shown in FIG. 3, the transmission line 15 is connected between the first (existing) span of the existing steel towers L and M and the second (new) span of the existing steel tower L and the new steel tower N. The case of transfer will be described.
First, between the three power transmission lines 15 between the first diameters and the power transmission lines held by the holding member 20, the first transfer auxiliary device A and the second movement auxiliary device B are shown in FIG. Set as shown.

  That is, three power transmission lines 15 having a predetermined length facing an area where there are railways and dangerous materials on the ground are supported through the gold wheels 11 of each transfer auxiliary device A, and the predetermined portion p of the gold wheel 11 is Both ends of a support member 21 such as a rubber string are connected to predetermined two parts q and r on the power transmission line 15. Thus, the power transmission line 15 is supported not only by the gold wheel 11 but also by the gold wheel 11 by the support member 21 connected to the gold wheel 11, so that the power transmission line 15 is flexibly suspended (suspended) from the gold wheel 11. ).

  Subsequently, the gold wheel 11 of the uppermost first transfer auxiliary device A is connected to the connection cord 16 and the second connection cord storage portion 17 constituting the second transfer auxiliary device B, and the shock absorber 18. Then, the clamp 19 is suspended and held on the power transmission line held by the holding member 20. At this time, all the spacers and the like on the transmission line 15 are removed.

Next, a moving metal wheel (not shown) is lowered from the arm tip of the tower N using a suspension rope, a suspension wire, etc. until the existing suspension clamp plays with the power transmission line held by the holding member 20 immediately below. Lift and dismantle suspension. And the power transmission line hold | maintained at the holding member 20 is pulled up to the predetermined position of the steel tower N at a stretch in the direction shown by the arrow H of FIG.
Subsequently, the middle and lower transmission lines 15 are sequentially transferred from the uppermost transfer auxiliary device A so as to contract each transfer auxiliary device A as shown in FIGS. 6 and 7, and finally each transmission line. The transmission line transfer auxiliary device A and the transfer auxiliary device B are collected from between the transmission lines 15 and 15 between the transmission lines held by the transmission line 15 and the holding member 20, respectively, and the series of transfer operations is completed.
In the above description, for the sake of simplicity, the transfer of three transmission lines 15 for one line has been described. However, the transfer of a plurality of transmission lines 15 for two or more lines is performed in the same procedure as described above. Can be implemented.

  As described above, in the present embodiment, the gold wheel 11 holding the power transmission line 15 and the wire wheel 11 connected to the gold wheel 11 are accommodated so that the connection cord 14 can be wound and pulled out, and the acceleration in the pulling direction is a predetermined value. A plurality of sets of first movement assisting devices A that are connected in order to the first connection cord storage section 14 that locks the drawer when the number of The first transfer auxiliary device A, in which a plurality of sets are sequentially connected every predetermined length of the transmission line 15, is attached between the transmission lines 15, and a part of the gold wheel 11 is held by the gold wheel 11. Each of the power transmission lines 15 is supported by the gold wheel 11 by a support member 21 connected to a predetermined part on the power transmission line 15 other than the part, and the gold wheel in the uppermost set of the first transfer auxiliary devices A. 11 and holding member 20 are wound up with connection cord 14 When the acceleration in the pull-out direction exceeds a predetermined value, the second connection auxiliary device B having the second connection cord storage portion 17 that locks the pull-out is connected to the power transmission line 15. Within the predetermined expansion / contraction limit of the first shift assisting device A and the second shift assisting device B attached between them, the power transmission line held by the holding member 20 is separated from the first (existing) span. A plurality of power transmission lines 15 held by the respective gold wheels 11 are moved simultaneously from the first span to the second span by moving to the second (newly) span.

Therefore, even if the power transmission line 15 is partially cut or loosened, the plurality of power transmission lines 15 and the power transmission lines 15 and the power transmission lines held by the holding member 20 may interfere with each other, Even if the power transmission line 15 is about to hang down, it is possible to prevent the drooping by the locking action of the connection cords 14 and 16, and to the power transmission line 15 when the connection cords 14 and 16 are locked. The acting shock can be suppressed by the shock absorbers 12 and 18, and the transmission line 15 can be prevented from bouncing for reaction of the shock.
Further, by moving one holding member 20 from an existing steel tower to a new steel tower, it is possible to transfer a plurality of power transmission lines 15 at a stretch between the new diameters. In this case, each power transmission line 15 is independently supported by a support member 21 interposed between the gold wheel 11. Therefore, in this transfer method, it is possible to achieve both safety and efficiency of transfer work and reduction of work cost.

  The transmission line shift device of the present invention suppresses drooping of the transmission line that occurs at the time of the transfer by a plurality of sets of transfer auxiliary devices attached between the transmission lines every predetermined length of the plurality of transmission lines. The effect of being able to control shocks caused by drooping and drooping, and to transfer a single line from one span to the other span safely and economically with a simple operation. And is useful for a transmission line transfer device and a transfer method head used to transfer a transmission line from one span to the other span.

DESCRIPTION OF SYMBOLS 11 Gold wheel 12 Shock absorber 13 1st connection cord storage part 14 Connection cord 15 Power transmission line 16 Connection cord 17 2nd connection code storage part 18 Shock absorber 19 Clamp 20 Holding member 21 Support member A 1st movement assistance apparatus B 2nd movement auxiliary device L, M, N

Claims (5)

A gold wheel that holds a power transmission line, and a first connection cord storage that is connected to the gold wheel, stores the connection cord so that it can be wound and pulled out, and locks the drawer when the acceleration in the pulling direction exceeds a predetermined value. A step of preparing a plurality of sets of first movement assist devices formed by sequentially connecting the units;
A movement assisting device attaching step for attaching the first transfer assisting device in which a plurality of sets are connected in sequence between a plurality of transmission lines installed between the first diameters;
A power transmission line support step for supporting each power transmission line on the gold wheel by a support member connected between a part of the gold wheel and a predetermined part on the power transmission line other than the holding portion by the gold wheel,
The gold wheel and the held power transmission line in the uppermost set of the first transfer assist devices are stored so that the connection cord can be wound and pulled out, and when the acceleration in the pulling direction exceeds a predetermined value, A connecting step of connecting via a second movement assisting device having a second connecting cord storage portion for locking the drawer;
The held transmission line is moved from the first span to the second span within a predetermined expansion / contraction limit of the first shift assist device and the second shift assist device attached between the power transmission lines. And a transfer process for transferring a plurality of transmission lines held by each gold wheel from the first span to the second span.   The shift auxiliary device mounting step of the transmission line shift method according to claim 1, wherein the first shift auxiliary device connected between the plurality of power transmission lines at every predetermined length is attached. A transmission line transfer method, characterized in that it is a transfer auxiliary device mounting step. A gold wheel that holds the transmission line, a shock absorber, and a connection cord that can be wound and pulled out, and a first connection cord storage portion that locks the drawer when the acceleration in the pulling direction exceeds a predetermined value. A plurality of sets of first movement assist devices connected in order;
These first transfer auxiliary devices are connected in order, and the first transfer auxiliary device connected to the top is connected to the gold wheel so that it can be suspended on the upper transmission line. And a second movement auxiliary device having a second connection cord storage portion for storing the connection cord so that it can be wound and pulled out, and locking the drawer when the acceleration in the pull-out direction exceeds a predetermined value;
A support member connected between a part of the gold wheel and a predetermined part on the power transmission line other than the holding part of the gold wheel, and supporting the power transmission line on the gold wheel; A transmission line shifting device.   4. The transmission line transfer device according to claim 3, wherein the support member is a rubber string.   5. The transmission line according to claim 3, wherein the support member is connected between a part of the gold wheel and two symmetrical positions on the power transmission line through which the gold wheel is interposed. Transfer device.

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