JP6489728B1 - Column rebuilding method - Google Patents

Abstract

To reduce the burden of work. A method of rebuilding a utility pole is a method of rebuilding a support 10 whose support wire 20 is supported by an upper portion 10a to a support 30, and connecting the upper portion 10a of the existing support 10 to a construction machine 50 After the connection step S100 and the connection step S100, the existing column 10 is cut and the existing column 10 is removed from the cut portion to remove the lower portions 10b and 10c, so that the upper portion 10a of the existing column 10 is overhead wire 20 After the removal and support process S200 supported by the construction machine 50 and the removal and support process S200, a new support 30 is installed below the upper portion 10a of the existing support 10 and the existing support 10 is installed on the new support 30. After the installation / fixing step S300 for fixing the upper portion 10a and the installation / fixing step S300, the upper part of the existing column 10 is installed. A disconnect step S400 of releasing the connection between the construction machine 50 parts 10a, and a. [Selected figure] Figure 1

Description

  The present invention relates to a rebuilding method of a column.

  Patent Document 1 discloses a method of rebuilding a utility pole using a utility pole rebuilding tool. This pole replacement method is as follows: (1) Install the pole replacement tool on the pole that stretches either the electric wire or the communication wire, and (2) use the wire or communication wire stretched on the pole to the pole replacement tool (3) Suspend the utility pole construction tool with a crane to support the load of the wire or communication wire, (4) Remove the utility pole construction tool from the utility pole, (5) Remove the utility pole, (6) New Install the utility pole, (7) Install the utility pole construction tool on the new utility pole, (8) Transfer the electric wire or communication wire from the utility pole construction tool to the new utility pole.

  According to such a power pole rebuilding method, regardless of the type of the electric wire suspended on the power pole to be rebuilt, the power pole rebuilding work can be safely performed without installing a temporary power pole, In addition, the work efficiency of the construction can be improved and the cost can be reduced.

Patent No. 5056659

  However, in the above pole construction method, the electric wire or communication wire stretched on the pole is held by the pole construction tool, or the electric pole or communication wire is transferred from the pole construction tool to a new pole, etc. The burden of work on the electric wire or communication wire is heavy.

  Such a problem is not limited to the case of rebuilding a power pole which is a pole for stretching an electric wire or a communication line, but may commonly exist in the case of rebuilding a pole for supporting an object such as a signboard or a traffic signal.

  This invention is made in view of the said subject, and it aims at providing the rebuilding construction method of a support | pillar which reduces the burden of operation | work.

(1) The present invention is a construction method for rebuilding a column whose object is supported by the upper part, and connecting the upper part of the existing column or the object to the construction machine, and later, the by cutting the existing struts removing the portion below without moving the upper portion from the cut portion of the existing post, the construction machine the upper part of the existing post with the object Installing a new support under the upper part of the existing support and fixing the upper part of the existing support to the new support after the removal and support process supported by the second support and the removal and support process. -Fixing step, and releasing step after the setting and fixing step, for releasing the connection between the upper part of the existing support column or the target object with the construction machine It is a rebuilding method of struts and features.

  According to the present invention, a new support can be installed at the position where the existing support was installed. In addition, it is possible to reduce the burden of work on the object supported by the support.

  (2) Further, in the present invention, in the removing and supporting step, the existing post is cut at a plurality of points and the middle part of the existing post except the uppermost and lowermost two parts is removed and then removed. It is a rebuilding method of the support as described in said (1) characterized by pulling out and removing the lowermost part in the existing support | pillar from the ground.

  According to the present invention, the existing support can be removed without moving the object supported by the existing support. Moreover, there is no need to dig up the ground when removing the existing support, and the burden of work can be reduced.

  (3) Further, in the installation and fixing process, as the new columns, one of them is slideably connected to each other by being loosely inserted into the other with mutually different diameters so as to be slidable. It is a rebuilding construction method of a pillar as described in the above (1) or (2), characterized in that a plurality of pillar tubes which expand and contract are used to fix the plurality of pillar tubes in a stretched state.

  According to the present invention, a new support can be installed without moving an object supported by the existing support. In addition, there is no need to dig up the ground when installing a new support, which can reduce the work load.

  (4) The present invention is also the rebuilding method of a post according to any one of the above (1) to (3), characterized in that the post is a power pole on which an overhead wire is supported as the object. .

  According to the present invention, since the work for the overhead wire is reduced, the possibility of an accident such as disconnection can be reduced.

  According to the column rebuilding method described in the above (1) to (4) of the present invention, the number of man-hours can be reduced. That is, the burden of work can be reduced.

It is a flowchart which shows the flow of the rebuilding construction method of the support | pillar of this invention. It is the schematic explaining the flow of the rebuilding construction method of the support | pillar of this invention, and shows the state before construction. It is the schematic explaining the flow of the rebuilding construction method of the support | pillar of this invention, and the state after a connection process is shown by continuation of FIG. 2A. It is the schematic explaining the flow of the rebuilding construction method of the support | pillar of this invention, and the state after a removal * support process is shown by continuation of FIG. 2B. It is the schematic explaining the flow of the rebuilding construction method of the support | pillar of this invention, and the state after an installation and fixing process is shown by continuation of FIG. 2C. It is the schematic explaining the flow of the rebuilding construction method of the support | pillar of this invention, and the state after construction is shown by continuation of FIG. 2D.

  Hereinafter, with reference to the drawings, a rebuilding method of a column according to an embodiment of the present invention will be described in detail.

  First, with reference to FIG. 1 and FIG. 2A to FIG. FIG. 1 is a flow chart showing the flow of a rebuilding method of a column. FIG. 2A to FIG. 2E are schematic views for explaining the flow of the rebuilding method of columns. FIG. 2A shows the state before construction. FIG. 2B shows a state after the connection step S100 in the continuation of FIG. 2A. FIG. 2C shows the state after the removal / supporting step S200 in the continuation of FIG. 2B. FIG. 2D shows a state after the installation and fixing step S300 in a continuation of FIG. 2C. FIG. 2E shows the state after construction in a continuation of FIG. 2D.

  1 and 2A to 2E is a method of rebuilding the pole (electric pole) 10 supported by the upper portion 10a of the electric wire or communication wire as the object to the pole 30. is there.

  Specifically, the pillar rebuilding method includes a connection process S100, a removal and support process S200, an installation and fixation process S300, and a connection release process S400. In addition, the overhead wire 20 in this specification is not only the meaning of the original overhead wire but a concept including a fixing tool for fixing the original overhead wire 20 to the support 10, electrical equipment fixed above the support 10, etc. It is.

  The connection step S100 is a step of connecting the upper portion 10a of the existing support 10 to the construction machine 50.

  The construction machine 50 includes a self-propelled base machine 51, a so-called front 52 attached to the base machine 51, and the like.

  The base machine 51 includes a cabin 53 on which the driver rides, caterpillars 54 on the left and right, and outriggers 55 on the front, rear, left, and right.

  The front 52 is mounted on the front of the base machine 51 such that it can be raised and lowered by a bracket 56 and a back stay 57.

  The bracket 56 is provided at the front of the base machine 51 and rotatably supports the lower end of the front 52.

  The back stay 57 is composed of a hydraulic cylinder and is configured to be extensible and contractible by hydraulic pressure. The proximal end of the back stay 57 is rotatably supported at a front position of the base machine 51 at a position rearward of the bracket 56. The tip of the back stay 57 rotatably supports a position above the lower end of the front 52.

  Specifically, the front 52 includes a reader 58, an arm 59, a wire 60, a rail 61, support chucks 62 and 63, an elevation mechanism (not shown), and the like.

  The reader 58 is set up in front of the base machine 51. This leader 58 is composed of two square bars (square tubes) 58a and 58b which are arranged forward and backward and slidably connected to each other vertically, and the front square bar 58a slides on the rear square bar 58b. To expand and contract. The lower end of the rear square member 58 b is rotatably supported at the lower end of the rear surface by the bracket 56, and a portion above the lower end of the rear surface is rotatably supported at the back stay 57.

  The arm 59 is provided at the upper end of the reader 58 and extends forward. The wire 60 is suspended from near the tip of the arm 59. The rail 61 is provided on the front surface of the front square 58a of the reader 58, and enables the column chucks 62 and 63 to move up and down. The rail 61 may be configured integrally with the front square 58a of the reader 58 or separately from the front square 58a of the reader 58.

  The support chucks 62 and 63 are provided to be able to move up and down along the rail 61. The support chucks 62 and 63 are fixed to an endless chain (not shown) constituting an elevating mechanism (not shown), and along the travel of the endless chain (not shown), a predetermined length along the rail 61 is provided. Move up and down by stroke. Further, the column chucks 62 and 63 have a chuck mechanism (not shown). The chuck mechanism (not shown) holds or releases the support column 10.

  Specifically, in the connection step S100, the upper portion 10a of the existing support 10 is fastened to the wire 60 suspended from near the tip of the arm 59, and the upper portion 10a of the existing support 10 is supported by the support chucks 62 and 63. By holding, the upper portion 10a of the support 10 is connected to the construction machine 50 (see FIG. 2A → FIG. 2B).

  In the removing and supporting step S200, after the connecting step S100, the existing column 10 is cut, and the lower portion 10b and 10c is removed from the cut portion, whereby the upper portion 10a of the existing column 10 is removed. Is supported by the construction machine 50 along with the overhead wire 20 as the object.

  Specifically, in the removal and support step S200, the lower portion 10b of the existing support 10 is held by a holding mechanism (not shown) included in a construction machine (not shown) or the like different from the construction machine 50. Then, the existing support 10 is cut at a plurality of places C1 and C2 by a cutter (not shown) included in a construction machine (not shown) or the like different from the construction machine 50. The cutting point C1 is a point above the point held by the holding mechanism (not shown), and the cutting point C2 is lower than the point held by the holding mechanism (not shown) It is a place.

  Then, in the removal and support step S200, after cutting the existing column 10, an intermediate portion 10b (the above-mentioned holding mechanism (not shown) except the uppermost and lowermost two portions 10a and 10c of the existing column 10). Remove the held part 10b). Further, in the removal and support step S200, after removal of the middle portion 10b of the existing support 10, the lowermost portion 10c of the existing support 10 is underground by a construction machine (not shown) or the like different from the construction machine 50. Pull it out and remove it. Thereby, in removal / support process S200, the construction machine 50 will support the upper part 10a in the existing support | pillar 10 with the overhead line 20 which is a target object (refer FIG. 2C).

  In the installation and fixing step S300, after the removal and support step S200, a new support 30 is installed below the upper portion 10a of the existing support 10 and the upper portion 10a of the existing support 10 is fixed to the new support 30. Process.

  Specifically, in the installation and fixing step S300, as the new support column 30, a plurality of mutually different diameters are slidable and one is loosely inserted to the other to be connected vertically and to expand and contract by sliding mutually. The support tubes 30a and 30b are used. First, in the installation and fixing step S300, after installing the plurality of support tubes 30a and 30b in a contracted state, the upper end of the new support 30 abuts on the lower end of the upper portion 10a of the existing support 10 The support tubes 30a and 30b are stretched, and in a state where the support tubes 30a and 30b are extended, the support tubes 30a and 30b are fixed to each other using fasteners (not shown) such as bolts. Then, in the installation / fixing step S300, after the new support column 30 is installed, the upper portion 10a of the existing support column 10 is connected to the new support column 30 using an annular connector 40 or the like (see FIG. 2D).

  The connection release step S400 is a step of releasing the connection of the upper portion 10a of the existing column 10 with the construction machine 50 after the installation and fixing step S300.

  Specifically, in the connection release step S400, the fastening of the upper portion 10a of the existing support 10 by the wire 60 suspended from near the tip of the arm 59 is released and the upper position of the existing support 10 by the support chucks 62 and 63. By releasing the holding of the portion 10a, the connection between the upper portion 10a of the existing support 10 and the construction machine 50 is released (see FIG. 2E).

  Thus, according to the column rebuilding method, a new column 30 can be installed at the position where the existing column 10 was installed. Moreover, the burden of the operation | work with respect to the overhead wire 20 which is a target object supported by support | pillars 10 and 30 can be eased.

  Further, according to the column rebuilding method, the existing column 10 can be removed without moving the overhead wire 20 which is the object supported by the existing column 10. Moreover, there is no need to dig up the ground when removing the existing column 10, and the burden of work can be reduced.

  In addition, according to the column rebuilding method, the new column 30 can be installed without moving the overhead wire 20 which is an object supported by the existing column 10. Moreover, there is no need to dig up the ground when installing the new support column 30, and the work load can be reduced.

  Further, according to the column rebuilding method, since the work for the overhead wire 20 is reduced, the possibility of an accident such as disconnection can be reduced.

  The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit and the technical idea of the present invention. That is, the position, size, length, quantity, shape, material, time, timing, etc. of each component can be changed as appropriate.

  For example, although the above-mentioned embodiment explained a case where a pole (telephone pole) 10 on which the overhead wire 20 is supported is replaced as an object, the present invention is not limited to this, and an object such as a signboard or a traffic signal is supported It is also possible to replace the props that are being

  Alternatively, in the above embodiment, the construction machine 50 having the front 52 is used as an example, but the present invention is not limited to this, and a crane car or other construction machine may be used.

  Alternatively, in the above embodiment, the case where the upper portion 10a of the existing support 10 is connected to the construction machine 50 is described as an example, but the present invention is not limited thereto, and the upper portion 10a of the existing support 10 is Alternatively, the overhead wire 20 as the object may be connected to the construction machine 50 together with the upper portion 10 a of the existing support 10.

  Alternatively, in the above embodiment, after the existing support column 10 is cut at a plurality of points C1 and C2 and the lower portions 10b and 10c of the existing support column 10 are sequentially removed, the present invention is not limited thereto. The present invention is not limited to this, and the existing column 10 may be cut at one place, and then the lower part may be removed from the cut portion. In this case, it is necessary to dig up the ground and then to remove it, or to move the upper portion 10a of the existing support 10 and to remove it.

10 Existing pole (electric pole)
10a Upper part (upper part)
10b Lower part (middle part)
10c Lower part (bottom part)
20 overhead line (object)
Reference Signs List 30 new column 30a, 30b column tube 40 connector 50 construction machine 51 base machine 52 front 53 cabin 54 caterpillar 55 outrigger 56 bracket 57 backstay 58 leader 58a, 58b square bar 59 arm 60 wire 61 rail 62, 63 column chuck C1, C2 Disconnection point S100 Connection process S200 Removal and support process S300 Installation and fixation process S400 Connection release process

Claims (4)

It is a construction method of rebuilding the support on which the object is supported in the upper part,
A connecting step of connecting the upper part of the existing column or the object to a construction machine;
After said connecting step, said by cutting the existing struts removing the portion below without moving the upper portion from the cut portion of the existing post, the object of the upper portion of the existing post Together with the removal and support process supported by the construction machine,
Installing and fixing a new column below the upper part of the existing column and fixing the upper part of the existing column to the new column after the removing and supporting step;
After the installation / fixing step, there is provided a connection release step for releasing the connection of the upper part of the existing support column or the object with the construction machine. In the removing and supporting step, the existing post is cut at a plurality of locations, and the middle part excluding the top and bottom two portions of the existing post is removed, and then the lowermost part of the existing post is removed. The pillar rebuilding method according to claim 1, wherein the pillar is removed from the ground and removed. In the installation / fixing step, a plurality of pillar tubes which are vertically linked by being loosely inserted to one another with different diameters and being slidable with each other are used as the new pillars, and a plurality of pillar tubes that expand and contract by sliding mutually The pillar rebuilding method according to claim 1, wherein the plurality of column tubes are fixed to each other in an extended state. The said support | pillar is a utility pole by which an overhead wire is supported as said target object, The rebuilding construction method of the support | pillar in any one of Claims 1-3 characterized by the above-mentioned.

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