JP5970124B1 - Temporary support pole and utility pole rebuilding method - Google Patents

Abstract

The present invention provides a temporary support column that can be installed even in a non-planar place and a rebuilding method using the temporary support column. A main column 20 whose longitudinal direction is set vertically, two support weights 30 whose positions in the horizontal plane constitute a triangle with the lower end of the main column, and the length of the main column Two struts 40 that connect a position away from the lower end along the direction and each of the two support weights, and two supports 50 that connect the vicinity of the lower end of the main pillar and each of the two support weights. And is configured. [Selection] Figure 1

Description

  The present invention relates to a temporary support pole suitable for use in rebuilding an existing utility pole to a new utility pole, and a utility pole rebuilding method using the temporary support pole.

  When installing new power poles, such as rebuilding due to aging of power poles or rebuilding to long poles due to an increase in overhead lines, the location of the new power poles depends on the site conditions of the road and surrounding buildings. In many cases, the installation position becomes. In that case, once the temporary utility pole is built and the overhead wire is moved to the temporary utility pole, the existing utility pole is removed, the new utility pole is installed, the overhead wire is transferred to the new utility pole, and the temporary utility pole is removed in order. It is common.

  However, it is often difficult to dig a hole for installing a temporary utility pole due to underground buried objects such as water and sewage, gas piping, and communication equipment. In addition, the construction period may take about two to three months, and in many cases, the residents near the construction site refuse to install the temporary power pole.

  As a rebuilding method that replaces the above method, a method using a large crane has been proposed (see, for example, Patent Document 1). In the method described in Patent Document 1, a power pole rebuilding tool is attached to an existing power pole, an overhead wire is transferred to the power pole rebuilding tool, and then the power pole rebuilding tool is lifted and lifted by a large crane. In the meantime, the existing utility poles will be removed and new utility poles will be installed.

  In addition, as a rebuilding method that replaces the above method, a method has been proposed in which a temporary support column including a main column is built on a support base assembled in a cross beam (see, for example, Patent Document 2).

JP 2010-41798 A JP 2014-204642 A

  The method described in Patent Document 1 uses a large crane. For this reason, it is difficult to use this method both in terms of space and time in an area where the road width is narrow such as a residential area.

  In addition, the method described in the above-mentioned Patent Document 2 requires a space for installing a support base assembled in a cross beam, and can only be installed in a flat place without a step, so that the support base cannot be installed. The location is limited. Moreover, in this method, since the position etc. of the temporary support pillar main body after installation cannot be adjusted, it takes time to move the overhead wire.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a temporary support column that can be installed in a non-flat place when rebuilding a utility pole using the temporary support column. The object is to provide a method of rebuilding a utility pole using a support pole.

  In order to achieve the above-described object, the temporary support column of the present invention is installed at a position where the longitudinal direction is set vertically and the position in the horizontal plane forms a triangle with the lower end of the main column. Two supporting weights, two pillars connecting the main pillars at positions away from the lower end along the longitudinal direction, the two supporting weights, the vicinity of the lower ends of the main pillars, and the two supporting weights And two supports for connecting to each other.

  Moreover, the utility pole rebuilding method of this invention is comprised including the following processes. First, the overhead wire object grasping tool provided with the clamp for grasping the wire object is attached to the existing power pole, the overhead object is moved to the overhead wire object grasping tool, and the temporary support pillar described above is installed. Next, an overhead wire object temporary gripping tool is attached to the temporary support column. Next, the overhead wire object grasping tool attached to the existing power pole is removed from the existing power pole. Next, the existing utility pole will be removed and a new utility pole will be installed. Next, the overhead wire object temporary gripping tool is attached to the new utility pole. Next, the overhead wire object temporary gripping tool is removed from the temporary support pillar, and the temporary support pillar is removed. Next, the overhead wire is moved from the overhead wire temporary gripping tool to the new utility pole. Next, the overhead wire object grasping tool is removed from the newly installed utility pole.

  According to the temporary support column of the present invention and the utility pole rebuilding method using the temporary support column, the main column of the temporary support column includes two support weights, and a column and a support that connect the main column and the support weight. Support with. For this reason, it is possible to perform construction even in places that are not flat, such as steps. In addition, the area occupied by the temporary support columns is smaller than that of the conventional method.

  Moreover, since the main pillar, the support | pillar, and a support can be expanded-contracted, the time concerning the assembly in a field can be shortened. Furthermore, the position of the head of the temporary support column can be moved by changing the length of the column.

It is the schematic for demonstrating a temporary support pillar. It is the schematic for demonstrating the main pillar with which a temporary support pillar is provided. It is the schematic for demonstrating the support weight with which a temporary support pillar is provided. It is the schematic for demonstrating an overhead wire object temporary holding tool. It is the schematic for demonstrating the utility pole rebuilding method.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the shape, size, and arrangement relationship of each component are merely schematically shown to the extent that the present invention can be understood. In the following, a preferred configuration example of the present invention will be described. However, the material and numerical conditions of each component are merely preferred examples. Therefore, the present invention is not limited to the following embodiments, and many changes or modifications that can achieve the effects of the present invention can be made without departing from the scope of the configuration of the present invention.

  The temporary support pillar will be described with reference to FIG. FIG. 1 is a schematic view for explaining a temporary support column. The temporary support pillar is provided in the vicinity of the existing power pole 100 holding the overhead wire objects 101 and 102 such as a communication line and a low voltage line, and the high voltage line 103.

  The temporary support column includes a main column 20, two support weights 30, two columns 40, and two supports 50. In principle, the main pillar 20 is installed with its longitudinal direction vertical. The two support weights 30 are installed on the ground contact surface at positions that form a triangle with the lower end 20a of the main column 20.

  The two struts 40 connect the portion of the main pillar 20 away from the lower end 20 a along the longitudinal direction and each of the two support weights 30. In addition, the two support | pillars 40 are attached to the attachment point 20b where the position along the longitudinal direction of the main pillar 20 is the same. Moreover, the two support | pillars 40 can rotate in the vertical surface and the horizontal surface centering | focusing on the attachment point 20b.

  The two supports 50 connect the vicinity of the lower end 20 a of the main pillar 20 and each of the two support weights 30. In addition, the main pillar 20, the support | pillar 40, and the support 50 are the structures which can be expanded-contracted to a longitudinal direction, and can fix length in a predetermined position.

  In addition, although the structure provided with the two support weights 30, the two support | pillars 40, and the two supports 50 is demonstrated here, although not limited to this, when the intensity | strength is calculated | required, Three or more support weights, columns, and supports may be provided.

  The support column 40 can be configured using a so-called pipe support. The lock pin (not shown) of the support column 40 is removed, and the insertion tube 44 is pulled out from the waist tube 42 to extend the length of the support column 40, and the insertion tube 44 is inserted into the waist tube 42. Thereby, the length of the support | pillar 40 can be shortened. After setting to a predetermined length, the length is fixed using the nut handle 46. Since the support 50 can be configured in the same manner as the support column 40, the description thereof is omitted.

  Moreover, you may make it the structure which attached to the inner pipe 24 (refer FIG. 2) of the main pillar 20 the joint pillar 70 for a high voltage electric wire comprised with the insulator.

  The main pillar will be described with reference to FIG. FIG. 2 is a schematic view for explaining a main column provided in the temporary support column. FIG. 2A is a schematic perspective view of the main pillar. FIG. 2B is a schematic view of the main column viewed from above. In addition, hatching is attached to distinguish between the inner pipe and the outer pipe. FIGS. 2C and 2D are schematic diagrams showing the relationship between the inner tube and the outer tube. 2 (C) and 2 (D), only the lowering prevention plate provided in the inner pipe is shown, and the illustration of the inner pipe main body is omitted. Further, in FIGS. 2C and 2D, the inner tube support plate and the lowering prevention plate cannot be directly hidden by the outer tube, but are shown by solid lines for emphasis. 2D is different from FIGS. 2B and 2C in the positional relationship between the outer tube 22 and the inner tube 24 included in the main column. 2E and 2F are schematic views showing the vicinity of the bottom of the main pillar.

  The main column 20 includes a cylindrical outer tube 22 and an inner tube 24, respectively. The inner tube 24 is provided so as to be able to be inserted into and pulled out from the outer tube 22. The outer tube 22 and the inner tube 24 can be steel pipes, for example.

  An inner tube support plate 23 is provided on the inner wall 22 a of the outer tube 22. The inner tube support plate 23 is provided at regular intervals in the longitudinal direction of the outer tube 22. In the configuration example shown in FIGS. 2C and 2D, the inner tube support plate 23 is connected along the longitudinal direction. For example, when the inner pipe support plates 23 are provided at intervals of 0.5 m, the length of the main pillar 20 can be set in units of 0.5 m. The inner tube support plate 23 is provided on one of two adjacent portions when a circle having a cross section perpendicular to the longitudinal direction is equally divided into 2n by n (n is an integer of 2 or more) diameters, It is not provided on the other side. For example, as shown in FIG. 2B, when n is 2, that is, when the two diameters are equally divided into four, the center of the cross section is within the range of 0 to 90 degrees and 180 to 270 degrees. , Provided.

  A lowering prevention plate 25 is provided on the outer wall 24 a of the inner tube 24. Similar to the inner tube support plate 23, the lowering prevention plate 25 is provided in one of two adjacent portions when a circle, which is a cross section orthogonal to the longitudinal direction, is divided into 2n parts by n diameters, and Is not provided. In the example shown in FIG. 2B, the two sections facing each other across the center of the cross section are provided in the sections of 0 to 90 degrees and 180 to 270 degrees with respect to the center of the cross section.

  As shown in FIG. 2D, the position where the inner tube support plate 23 of the outer tube 22 is provided in the cross section orthogonal to the longitudinal direction of the outer tube 22 and the inner tube 24, and the lowering prevention plate of the inner tube 24 When the position where 25 is provided matches, the lowering prevention plate 25 is held by the inner tube support plate 23. On the other hand, as shown in FIGS. 2B and 2C, when the inner tube 24 is rotated 90 degrees with respect to the outer tube 22 from the above-described coincidence state, the lowering prevention plate 25 is provided with the inner tube. Without being held by the support plate 23, the inner tube 24 can move along the longitudinal direction of the outer tube 22.

  Therefore, the inner tube 24 is removed from the state where the position where the inner tube support plate 23 of the outer tube 22 is provided and the position where the lowering prevention plate 25 of the inner tube 24 is provided in the cross section. After rotating 90 degrees with respect to the tube 22 and making it inconsistent and moving in the longitudinal direction, the inner tube 24 is rotated -90 degrees with respect to the outer tube 22 at a predetermined position, If the position where the inner pipe support plate 23 of the outer pipe 22 is provided matches the position where the lowering prevention plate 25 of the inner pipe 24 is provided, the inner pipe 24 is supported at that position.

  In a state where the inner tube 24 is supported by the outer tube 22, it is completely fixed by a fixing bolt or the like provided separately. In this way, the length of the main pillar 20 is adjusted.

  As shown in FIG. 2E, a bottom plate (hereinafter referred to as a bottom plate steel plate) 26, which is a steel plate, is provided at the lower end of the outer tube 22, that is, the lower end 20a of the main column 20, for example. The outer tube 22 and the bottom plate steel plate 26 are connected by, for example, a U bolt 27. Thereby, even if it is a sloping ground, the main pillar 20 can be installed vertically.

  The bottom plate steel plate 26 is composed of two sheets, for example. For example, a wooden bottom plate (hereinafter referred to as a wooden bottom plate) 28 can be attached to the lower bottom plate steel plate 26. The wood bottom plate 28 is attached to the bottom plate steel plate 26 using bolts or the like. By providing the wood bottom plate 28, it is possible to prevent the asphalt or the like that becomes the ground contact surface of the temporary support pillar from being damaged. As shown in FIG. 2F, H steel 29 can be used in place of the bottom plate steel plate 26 and the wood bottom plate 28 at the bottom. The H steel 29 can be connected to the upper bottom plate steel plate 26 by using a conventionally known clamping metal fitting 21 or the like that is arbitrarily suitable. When the H steel 29 is used, it is possible to prevent the main pillar 20 from collapsing due to a ground collapse when the existing power pole is pulled out.

  The support weight will be described with reference to FIG. 3A and 3B are schematic views for explaining a support weight provided in the temporary support column.

  The support weight 30 is preferably configured to be divided into a plurality of layers for convenience of transportation. Here, an example in which the support weight 30 is configured by three-layer weights 32-1 to 32-1 will be described.

  A wooden bottom plate 34 is attached to the bottom surface of the first layer weight 32-1 as the lowermost layer so as not to damage asphalt or the like. Further, a lifting plate 36 is attached to each of the pair of side surfaces of the first layer weight 32-1. The lifting plate 36 is provided so as to be easily lifted by a crane or the like. A female screw 35 is provided on the upper surface of the weight 32-1 of the first layer. A through bolt 37 is fitted into the female screw 35. The through bolt 37 is provided with an attachment plate 38 having a through hole on the side opposite to the side attached to the weight 32-1 of the first layer. The mounting plate 38 is provided for mounting the support column 40 and the support 50, that is, for connecting to the main column 20. Further, by using the through bolt 37, the direction of the mounting plate 38 can be changed according to the positions of the main pillar 20 and the support weight 30.

  The weights 32-2 to 3 of the second to third layers are configured in the same shape. A lifting plate 36 is attached to a pair of side surfaces of the weights 32-2 to 3 of the second to third layers, similarly to the weight 32-1 of the first layer. Further, the lifting plate 36 is provided with a notch so as not to interfere with the lifting plate 36 of the lower weight when stacked. The second to third weights 32-2 to 3 are provided with through holes that penetrate between the upper surface and the bottom surface at the same position as the female screw 35 of the first layer weight 32-1. Further, by passing the through bolt 37 through the through hole, the displacement of the weights 2-3-2 to 3-2 of the second to third layers stacked on the weight 32-1 of the first layer is prevented. Here, an example in which the support weight 30 is configured by three-layer weights has been described, but the present invention is not limited to this. By extending the length of the through bolt 37, the weight constituting the support weight 30 can be increased to four or more.

  As described above, the supporting weight 30 used here can change the weight of the supporting weight 30 by changing the number of the weights 32 and can also change the direction of the mounting plate 38. As described above, since the weight of the support weight and the degree of freedom are high, it is possible to cope with various field environments.

  The overhead wire temporary gripping tool will be described with reference to FIG. FIG. 4 is a schematic diagram for explaining the overhead wire object temporary gripping tool.

  The overhead wire temporary gripping tool 60 includes one or two vertical tubes 62 and at least two, for example, a pair of horizontal tubes 64 attached to the vertical tubes 62 so as to be spaced apart from each other. The vertical pipe 62 is configured by using, for example, a single pipe pipe made of fiber reinforced plastic (FRP: Fiber Reinforced Plastics). Further, the horizontal pipe 64 can be formed of a light arm metal, for example, but is not limited thereto, and may be formed of any suitable material and shape. The vertical pipe 62 and the horizontal pipe 64 are connected using any suitable conventionally known clamp 66 or the like.

  The vertical pipe 62 is provided with a clamp 67 for holding an overhead wire. The necessary number of the clamps 67 for holding the overhead line object is provided according to the number of the overhead line objects 101 and 102 such as communication lines and low voltage lines used in the newly installed utility pole. A utility pole mounting member 68 is provided at one end of the horizontal pipe 64. The utility pole mounting member 68 can be formed of, for example, any suitable conventionally known armless tie band.

  The rebuilding method will be described with reference to FIG. 5 and FIGS. FIG. 5 is a schematic process diagram for explaining the utility pole rebuilding method.

  First, the overhead wire object grasping tool 60 is attached to the existing utility pole 100. In this step, a pair of horizontal tubes 64 are attached to the existing utility pole.

  Next, the overhead wire objects 101 and 102 are moved from the existing utility pole 100 to the overhead wire object temporary gripping tool 60. In this step, the overhead wires 101 and 102 are attached to the overhead wire gripping clamp 67 of the overhead wire temporary gripping tool 60, and then the overhead wires 101 and 102 are removed from the existing utility pole 100 (see FIG. 5A). .

  Next, a temporary support pillar is installed.

  In this step, first, support weights 30 are installed at two predetermined locations including the vicinity of the existing power pole 100. The arrangement of the two support weights 30 can be at any suitable position in the vicinity where the existing utility pole 100 is provided, depending on the ease of construction, etc., but the angle formed by the two supports 50 is 0 degrees or If it is close to 180 degrees, the support 50 is easily rotated about the axis, so that stability is lacking. Therefore, it is preferable to arrange the support weight 30 so that the angle formed by the two supports 50 is 90 degrees or an angle close thereto. In addition, when strength is calculated | required, you may install the support weight 30 in three or more places.

  Next, using an aerial work vehicle or the like, the main column 20 is lifted in a state where the two columns 40 are bundled. Then, the main pillar 20 is moved to an installation location. At the installation location, the belt bundled with the columns 40 is removed, and the columns 40 are expanded. The length of the column 40 is extended by removing the lock pin of the column 40 and pulling out the insertion tube 44 from the waist tube 42. The insertion tube 44 of the support column 40 is fixed to the mounting plate 38 of the support weight 30 using a bolt or the like. Thereafter, the length of the support column 40 is fixed using the nut handle 46.

  At this time, the support 50 is fixed to the mounting plate 38 of the supporting weight 30 together with the support column 40 using a bolt or the like (see FIG. 5B).

  Following the step of installing the temporary support column, the overhead wire is moved to the temporary support column. In this step, first, the connecting column 70 (see FIG. 1) is inserted into the inner tube 24 of the main column 20. The joint pillar 70 is made of, for example, FRP. The connecting post 70 has a structure to which an arm for a high voltage line can be attached, and the arm for a high voltage line is attached before the inner pipe 24 is pulled up. Next, the inner pipe 24 is pulled up using an aerial work vehicle or the like, and the length of the main column 20 is adjusted so that the head of the joint column 70 can be gripped by the high-voltage line 103. Fix it. Thereafter, the arm is lifted using a lever block (registered trademark) or the like to grip the high-voltage line 103.

  Next, a pair of horizontal tubes 64 different from the pair of horizontal tubes 64 attached to the existing power pole 100 is attached to the overhead wire object temporary gripping tool 60, and this other pair of horizontal tubes 64 is attached to the temporary support column. (See FIG. 5C). Thereafter, the pair of horizontal tubes 64 attached to the existing utility pole 100 is removed.

  Next, the existing utility pole 100 is removed (see FIG. 5D), and the new utility pole 110 is installed. This step is performed by any suitable conventionally known method.

  Next, a pair of horizontal tubes 64 is attached to the overhead wire object grasping tool 60, and the pair of horizontal tubes 64 is attached to the newly installed utility pole 110 (see FIG. 5E).

  Thereafter, the high-voltage line 103 is moved from the high-voltage line arm of the connecting pole 70 to the newly installed power pole 110. At the time of relocation, when the holding position of the high-voltage line 103 in the newly installed power pole 110 is higher than that of the existing power pole 100, it is possible to adjust the height by raising and lowering the arm for the high-voltage line of the joint pole 70. Next, the overhead wire object temporary gripping tool 60 is removed from the temporary support pillar, and the temporary support pillar is removed.

  Thereafter, the overhead wires 101 and 102 such as a communication line and a low-voltage wire are moved from the overhead wire temporary gripping tool 60 to the new utility pole 110. This transfer of the overhead wire is performed in the same manner as the process of transferring from the existing utility pole 100 to the temporary overhead wire gripping tool 60. After the transfer of the overhead wire to the newly installed utility pole 110 is completed, the overhead wire object temporary gripping tool 60 is removed from the newly installed utility pole 110 to complete the construction.

  According to this method, the main column of the temporary support column is supported by the two support weights, the support column and the support that connect the main column and the support column. For this reason, it is possible to perform construction even in places that are not flat, such as steps. In addition, the area occupied by the temporary support columns is smaller than that of the conventional method. Furthermore, the position of the head of the temporary support column can be moved by changing the length of the column.

  Moreover, since the main pillar, the support | pillar, and a support can be expanded-contracted, the time concerning the assembly in a field can be shortened.

  In addition, about the process order of the utility pole rebuilding method, it is not limited to the above-mentioned example. For example, after attaching the overhead wire temporary gripping tool 60 to the existing power pole 100, the temporary support pillar may be installed, or after changing the order and installing the temporary support pillar, the overhead wire object temporary gripping tool is installed on the existing power pole 100. 60 may be attached.

  Similarly, the overhead wire temporary gripping tool 60 and the temporary support column may be removed after the temporary support column is removed, or the overhead wire temporary gripping tool 60 may be removed. Later, the temporary support pillar may be removed.

  This electric pole rebuilding method is mainly implemented by an electric construction company, for example, but the communication construction company may implement the transfer of the communication line such that the overhead wires 101 and 102 include the communication line. In this case, if the communication construction company performs the process of transferring the communication line from the existing utility pole to the temporary object holding tool and the process of transferring the communication line from the temporary object temporarily holding tool to the new utility pole, This can be done without an electric construction company touching the communication line. In addition, if the temporary holding tool for overhead wires is attached to the existing utility pole or the new utility pole, the relocation of the communication line itself is independent of these operations on a separate day from the removal of the existing utility pole and the installation of the new utility pole. Can be done. For this reason, even when different construction companies work, the degree of freedom of the work schedule can be increased.

20 Main Pillar 21 Clamping Bracket 22 Outer Tube 23 Inner Tube Support Plate 24 Inner Tube 25 Lowering Prevention Plate 26 Bottom Plate Steel Plate 27 U Bolt 28 Wood Bottom Plate 29 H Steel 30 Support Weight 32 Weight 34 Bottom Plate 35 Female Screw 36 Lifting Plate 37 Through bolt 38 Mounting plate 40 Post 42 Waist pipe 44 Insertion pipe 46 Nut handle 50 Support 60 Temporary wire object temporary gripping tool 62 Vertical pipe 64 Horizontal pipe 66, 67 Clamp 68 Power pole mounting member 70 Joint pole 100 Existing power pole 101, 102 103 High voltage line 110 New utility pole

Claims (6)

A main pillar whose longitudinal direction is installed vertically;
Two supporting weights installed at positions constituting a lower end of the main pillar and a triangle;
Two struts connecting the main pillar at a position away from the lower end along the longitudinal direction and each of the two support weights;
A temporary support column comprising two supports connecting the vicinity of the lower end of the main column and each of the two support weights. The temporary support column according to claim 1, wherein the main column, the support column, and the support are extendable and contractible in a longitudinal direction and can be fixed to a predetermined length. The main pillar is
Each includes a cylindrical outer tube, and an inner tube that can be inserted into and withdrawn from the outer tube,
On the inner wall of the outer tube, two adjacent circles are obtained by dividing a circle, which is a cross section perpendicular to the longitudinal direction at a constant interval in the longitudinal direction, by n (n is an integer of 2 or more) equal to 2n in diameter. An inner tube support plate is provided on one of the parts,
The outer wall of the inner tube is provided with a lowering prevention plate in one of two adjacent portions when a circle having a cross section perpendicular to the longitudinal direction is equally divided into 2n by n diameters. The temporary support column according to claim 2. The temporary support pillar according to claim 3, wherein the inner pipe of the main pillar is provided with a connecting pillar for supporting a high-voltage line, which is made of an insulator. Attaching an overhead wire object grasping tool equipped with an overhead wire object gripping clamp to an existing utility pole;
Transferring the overhead wire to the overhead wire temporary gripping tool;
Installing the temporary support pillar according to any one of claims 1 to 4,
Attaching the overhead wire object temporary gripping tool to the temporary support post;
Removing the temporary wire object temporary gripping tool from the existing utility pole;
Removing the existing power pole and installing a new power pole;
Attaching the overhead wire object temporary gripping tool to the new utility pole;
Removing the wire object temporary gripping tool from the temporary support column;
Removing the temporary support pillar;
Transferring the overhead wire from the overhead wire temporary gripping tool to the new utility pole;
And a step of removing the overhead wire object grasping tool from the newly installed utility pole. The step of installing the temporary support pillar further includes:
Installing support weights at two predetermined locations including the vicinity of the existing power pole;
The main column is installed so that the longitudinal direction is vertical, and the main column and the two support weights are connected by two extendable struts, respectively, and the main column, the two support weights, Are connected by two supports that can be expanded and contracted, and the length of the support and the support is fixed.
The electric pole rebuilding method according to claim 5, further comprising a step of expanding and contracting the main pole in a longitudinal direction and fixing the main pole with a predetermined length.

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