Power pole installation method, assembly method of power pole member and power pole construction member

Abstract

To provide a power pole installation method capable of reducing load on a worker in installation work of a power pole for various equipment, an assembly method of power pole members used in the power pole installation method, and power pole construction members capable of being used for the power pole installation method and the assembly method of power pole members.SOLUTION: An installation method of a power pole formed by connecting multiple pole-like bodies comprises: an equipment installation step of installing equipment on an equipment installation pole which is the pole-like body on which the equipment installed on the power pole is installed, out of the multiple pole-like bodies at an assembly site far from an installation site where the power pole is installed; a transportation step of transporting the equipment installation pole on which the equipment has been installed in the equipment installation step from the assembly site to the installation site by a vehicle; and a connection step of connecting the equipment installation pole transported in the transportation step to an upper end of a lower pole in a pole-like body erected at the installation site.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a method for installing a utility pole, a method for assembling a member for a utility pole, and a member for constructing a utility pole. [Background technology]

[0002] When constructing or rebuilding a utility pole, the utility pole body is usually transported to the construction site and installed (erected) on the ground, after which various devices to be installed on the utility pole are installed on the utility pole body. For example, devices such as insulators for supporting electric wires, switches, and transformers are installed on the top of the utility pole body. The utility pole body is 12 to 16 meters high, and since the various devices to be installed on the utility pole body are installed on the top, a high-altitude work vehicle must be used for the installation work of the various devices, which places a heavy burden on the workers who perform the installation work on the high-altitude work vehicle. In addition, the installation status of the various devices on the utility pole body is checked by a manager on the ground and gives instructions to the workers, but since the manager checks the installation status of the various devices visually, it is difficult for him to accurately grasp the installation status of the various devices.

[0003] As a method for facilitating the installation of such various devices and the confirmation of the installation status, it is conceivable to attach various devices to the utility pole body in advance, and erect the utility pole body to which the various devices are attached. For example, currently, a divided pole formed by connecting a plurality of poles is adopted as the utility pole body, and a construction method has been developed in which an insulator and a switch for supporting electric wires are attached in advance to a pole installed at the top of such divided poles (hereinafter referred to as the upper pole). For example, in Patent Document 1, a mounting seat or the like is provided on a connecting pole corresponding to the upper pole, and a utility pole is formed by inserting a connecting pole with an insulator and a switch for supporting electric wires attached to this mounting seat or the like into the top of a concrete utility pole. With the construction method of Patent Document 1, the insulator and the switch for supporting electric wires can be installed on the connecting pole on the ground, so that the work of installing the insulator and the switch for supporting electric wires at a high place can be eliminated, and the burden on the worker can be reduced. In addition, since the administrator can check the installation status of the insulator and the switch for supporting electric wires on the ground, the installation accuracy of the insulator and the switch for supporting electric wires on the connecting pole can be improved. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 09-302997 Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, the upper pole used in the split poles (i.e., the connecting pole in Patent Document 1) is usually 3 m or longer. Therefore, even when installing insulators and switches for supporting electric wires on the connecting pole on the ground in the construction method in Patent Document 1, many of the insulators and switches for supporting electric wires must be installed at a position higher than the eye level of the worker, and the burden on the worker cannot be sufficiently reduced.

[0006] In addition, when a connecting pole with an insulator or switch for supporting electric wires is transported by vehicle using a general road or a highway for automobiles, the ground height during transportation must satisfy the restrictions of the Road Traffic Act. However, the technology disclosed in Patent Document 1 does not consider a structure for satisfying such restrictions, and does not assume the transportation of a connecting pole with an insulator or switch for supporting electric wires. In other words, the technology disclosed in Patent Document 1 does not assume the installation of an insulator or switch for supporting electric wires on a connecting pole at a place away from the installation site, such as an assembly factory. In this case, the insulator or switch for supporting electric wires must be installed on the connecting pole at the site where the utility pole is installed, but although no high-altitude work is performed, it is necessary to lift the insulator or switch for supporting electric wires when installing it on the connecting pole. Since the work space and the equipment that can be used are limited at the site where the utility pole is installed, the burden on the worker can be reduced compared to the case of installing equipment at high altitude, but even with this method, the burden on the worker is still large.

[0007] As described above, the technology disclosed in Patent Document 1 can reduce to some extent the burden on workers when installing insulators and switches for supporting electric wires on extension columns, but there is a demand for a construction method that can further reduce the burden on workers.

[0008] In view of the above circumstances, an object of the present invention is to provide a utility pole installation method that can reduce the burden on workers when installing various types of equipment on utility poles, a method for assembling utility pole components used in said utility pole installation method, and a utility pole construction component that can be used in said utility pole installation method and said method for assembling utility pole components. [Means for solving the problem]

[0009] <How to install utility poles> The utility pole installation method of the first invention is a method for installing a utility pole having a plurality of pillar-shaped bodies connected thereto, and is characterized by carrying out an equipment installation process for installing equipment on an equipment installation pole, which is a pillar-shaped body among the plurality of pillar-shaped bodies, at an assembly site separate from an installation site where the utility pole is installed, the equipment, a transport process for transporting the equipment installation pole on which the equipment is installed in the equipment installation process from the assembly site to the installation site by a vehicle, and a connecting process for connecting the equipment installation pole transported in the transport process to an upper end of a lower pole, which is a pillar-shaped body erected at the installation site. The utility pole installation method of the second invention is characterized in that, in the first invention, in the transporting step, the equipment installation pole is transported in a state where it is held by a utility pole construction member provided on the vehicle which holds the equipment installation pole in an upright position. The utility pole installation method of the third invention is characterized in that, in the second invention, the height from the ground to the upper end of the equipment installation pole when held by the utility pole installation member is 3.8 m or less. The utility pole installation method of the fourth invention is characterized in that, in the second invention, the utility pole installation member is provided with a support surface on which the underside of the transformer installed on the equipment installation pole is placed when the equipment installation pole is held by the utility pole installation member. The pole installation method of the fifth invention is characterized in that in the first invention, the equipment installation process includes a pole arrangement process of inserting a lower end of the equipment installation pole into a accommodating recess that is recessed from a work surface of a work area where a worker performs the work of installing the equipment on the equipment installation pole, and an assembly process of installing the equipment on the equipment installation pole accommodated in the accommodating recess in the pole arrangement process. The utility pole installation method of the sixth invention is the same as that of the fifth invention, further comprising a utility pole construction member that holds the equipment installation pole in an upright state, and the equipment installation process includes an extraction process of extracting from the accommodating recess the equipment installation pole on which the equipment is installed in the assembly process, and a pole holding process of holding the equipment installation pole extracted from the accommodating recess in the extraction process, by the utility pole construction member that holds the equipment installation pole in an upright state. The utility pole installation method of the seventh invention is characterized in that, in the sixth invention, a step of installing the equipment that could not be installed on the equipment installation pole while it is accommodated in the accommodating recess is performed on the equipment installation pole held by the utility pole construction member in the pole holding step. The utility pole installation method of the eighth invention is the same as that of the sixth invention, characterized in that the equipment installation pole has a connecting hole at its lower end into which the upper end of the lower pole is inserted, the utility pole construction member includes a base member and a holding member that holds the equipment installation pole, the holding member being a holding pole that is erected on the upper surface of the base member and is inserted into the connecting hole of the equipment installation pole, and in the pole holding process, the equipment installation pole extracted from the accommodating recess in the extraction process is placed on the utility pole construction member so that the holding pole of the utility pole construction member is inserted into the connecting hole of the equipment installation pole. The 9th invention is a method for installing a utility pole according to the 6th, 7th or 8th invention, characterized in that the utility pole construction member is movable on the equipment installation pole, and a loading step is carried out to load the utility pole construction member holding the equipment installation pole onto the vehicle. <How to assemble utility pole components> The assembling method of a utility pole component of the 10th invention is a method for assembling a utility pole component used for an equipment installation pole to which a plurality of columnar bodies are connected, the utility pole component having equipment to be installed on the utility pole and an equipment installation pole which is one of the plurality of columnar bodies on which the equipment is to be installed, and is characterized in that the method includes a pole arrangement process of inserting a lower end of the equipment installation pole into a accommodating recess that is recessed from a work surface of a work area where a worker performs the work of installing the equipment on the equipment installation pole, and an assembly process of installing the equipment on the equipment installation pole accommodated in the accommodating recess in the pole arrangement process. The assembling method of a utility pole component of the 11th invention is characterized in that, in the 10th invention, a utility pole construction component is provided that holds the equipment installation pole in an upright state, and the assembling process includes an extraction process of extracting the equipment installation pole on which the equipment is installed from the accommodating recess, and a pole holding process of holding the equipment installation pole extracted from the accommodating recess in the extraction process, on the utility pole construction component. The assembling method of a utility pole component of the 12th invention is characterized in that, in the 11th invention, the equipment installation pole has a connecting hole at its lower end into which an upper end of a lower pole, which is a columnar body erected at an installation location of the utility pole, is inserted, the utility pole construction component comprises a base member and a holding member for holding the utility pole component, the holding member is a holding pole which is erected on the upper surface of the base member and is inserted into the connecting hole of the equipment installation pole of the utility pole component, and in the pole holding process, the equipment installation pole extracted from the accommodating recess in the extraction process is placed in the utility pole construction component so that the holding pole of the utility pole construction component is inserted into the connecting hole. <Electric pole construction materials> The utility pole construction member of the 13th invention is a utility pole construction member that holds utility pole members used on a utility pole to which a plurality of columnar bodies are connected, the utility pole member having equipment to be installed on the utility pole and an equipment installation pole which is one of the plurality of columnar bodies on which the equipment is installed, the utility pole construction member comprising a base member and a holding member that holds the utility pole member, the holding member being a holding pole that is erected on an upper surface of the base member and is inserted into a connecting hole of the equipment installation pole of the utility pole member. The utility pole installation member of the 14th invention is characterized in that, in the 13th invention, the equipment installed on the utility pole includes a transformer, and the utility pole installation member is provided with a support surface on which an underside of the transformer installed on the equipment installation pole is placed when the utility pole member is installed on the equipment installation pole of the holding pole. The fifteenth invention is a utility pole installation member according to the thirteenth or fourteenth invention, characterized in that the upper surface of the base member has a pair of fork insertion portions installed at positions spaced apart from each other, into which each pair of forks of the forklift can be inserted, and the pair of fork insertion portions are arranged so that the retaining post and / or the support surface are located between them. The utility pole installation member of the 16th invention is characterized in that in the 15th invention, the pair of fork insertion portions are arranged such that a distance L1 from a first fork insertion portion installed at a position farther from the supporting pole in a direction in which the pair of fork insertion portions move away from each other to a central axis of the supporting pole is shorter than a distance L2 from an outer surface of the transformer to the central axis of the equipment installation pole in a state in which the utility pole installation member is installed on an equipment installation pole. The utility pole installation member of the 17th invention is characterized in that, in the 15th invention, the pair of fork insertion portions are provided with a second fork insertion portion installed at a position close to the retaining post in the direction in which the first fork insertion portion and the second fork insertion portion are separated from each other, the second fork insertion portion having a first insertion portion and a second insertion portion separated from each other in a direction intersecting the direction in which the pair of fork insertion portions are separated from each other, the first insertion portion and the second insertion portion are arranged to sandwich the retaining post when viewed from the direction in which the first fork insertion portion and the second fork insertion portion are separated from each other, and the retaining post and the first fork insertion portion are arranged such that the retaining post and the first fork insertion portion are located between the first insertion portion and the second insertion portion of the second fork insertion portion when viewed from the direction in which the first fork insertion portion and the second fork insertion portion are separated from each other. Effect of the Invention

[0010] <How to install utility poles> According to the first aspect of the present invention, the equipment can be installed on the equipment installation pole at an assembly site separated from the utility pole installation site, making the equipment installation work easier. According to the second and third inventions, the equipment installation pole is held by the utility pole installation member in an upright state and transported by a vehicle, thereby increasing the degree of freedom in selecting the equipment to be installed on the equipment installation pole. According to the fourth aspect of the present invention, even if the equipment to be installed on the equipment installation pole includes a transformer, the equipment installation pole on which the equipment is installed can be transported stably. According to the fifth aspect of the present invention, the installation work of the equipment on the equipment installation pole becomes easier, and the equipment installation accuracy can be improved. According to the sixth aspect of the present invention, the equipment installation pole on which the equipment is installed can be stably held until the transportation process. According to the seventh aspect of the present invention, it is possible to stably install equipment that could not be installed on the equipment installation pole housed in the housing recess. According to the eighth aspect of the present invention, the equipment installation column on which the equipment is installed can be stably held until the transportation process. According to the ninth aspect of the present invention, the equipment installation pole on which the equipment is installed can be loaded onto a vehicle while being held by the pole installation member, making it easy to load the equipment installation pole on which the equipment is installed onto a vehicle. <How to assemble utility pole components> According to the tenth aspect of the present invention, the installation work of the equipment on the equipment installation pole becomes easier and the installation accuracy of the equipment can be improved. According to the eleventh and twelfth aspects of the invention, the equipment installation pole on which the equipment is installed can be stably held until the transportation process. <Electric pole construction materials> According to the thirteenth aspect of the present invention, since the equipment installation pole of the utility pole member can be held with the holding pole inserted into the connecting hole, the utility pole member can be held upright in a stable state. In addition, if multiple utility pole construction members are provided, the equipment to be installed on the utility pole can be stored in the utility pole member installed on the equipment installation pole, which makes it possible to improve the efficiency of the work of constructing the utility pole. According to the fourteenth aspect of the present invention, even if a transformer is installed on the equipment installation pole of the utility pole member, the utility pole member can be held stably. According to the fifteenth aspect of the present invention, the utility pole construction member holding the utility pole member can be transported by a forklift, making it easy to transport the utility pole member. In addition, since the pair of insertion parts are provided on the upper surface of the base member, the utility pole construction member can be stably placed on the floor surface or the like while suppressing the height of the utility pole construction member. According to the sixteenth aspect of the present invention, the area occupied by the utility pole installation member can be reduced, while the utility pole member on which a transformer is installed on an equipment installation pole can be stably held. According to the 17th invention, even in the case of a utility pole component on which two transformers are installed, the utility pole component on which a transformer is installed on an equipment installation pole can be stably held while reducing the exclusive area of ​​the utility pole installation component. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1A is a schematic explanatory diagram of a utility pole EP installed by the utility pole installation method of this embodiment, and FIG. 1B is a schematic explanatory diagram of the state in which the equipment installation pole EP1 is loaded vertically on the loading platform C of a transport vehicle TC. [Diagram 2] FIG. 2 is a schematic explanatory diagram of a method for installing a utility pole according to the present embodiment. [Diagram 3] 1A and 1B are schematic explanatory diagrams of a utility pole installation member 10, in which (A) is a perspective view and (B) is a plan view. [Figure 4] 1A is a schematic side view of the utility pole installation member 10, and FIG. 1B is a schematic side view of the state in which an equipment installation pole EP1 is installed on a supporting pole 12 of the utility pole installation member 10. FIG. [Diagram 5] 1A and 1B are schematic explanatory diagrams of a utility pole installation member 10 provided with a pair of fork insertion portions 13, 15, in which (A) is a perspective view and (B) is a plan view. [Figure 6] 1A is a schematic side view of a utility pole installation member 10 provided with a pair of fork insertion portions 13, 15, and FIG. 1B is a schematic side view of an equipment installation pole EP1 installed on a supporting pole 12 of the utility pole installation member 10 provided with a pair of fork insertion portions 13, 15. [Figure 7]1A and 1B are schematic explanatory diagrams of a utility pole installation member 10 in which the second fork insertion portion 15 of a pair of fork insertion portions 13, 15 has a first insertion portion 15a and a second insertion portion 15b, where (A) is an oblique view and (B) is a plan view. [Figure 8] 1A is a schematic side view of a utility pole installation member 10 in which the second fork insertion portion 15 of a pair of fork insertion portions 13, 15 has the first insertion portion 15a and the second insertion portion 15b, and FIG. 1B is a schematic side view of an equipment installation pole EP1 installed on a supporting pole 12 of the utility pole installation member 10 in which the second fork insertion portion 15 of a pair of fork insertion portions 13, 15 has the first insertion portion 15a and the second insertion portion 15b. [Figure 9] 1A and 1B are schematic explanatory diagrams of a work site where the method for assembling a utility pole component of this embodiment is carried out, in which (A) is a plan view and (B) is a side view. [Figure 10] FIG. 1 is a schematic explanatory diagram showing a method for assembling a utility pole component of this embodiment at a work site using a utility pole installation component 10. [Figure 11] FIG. 1 is a schematic explanatory diagram illustrating a case where the method for assembling a utility pole member of this embodiment is carried out at a work site where a utility pole installation member GP is installed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] The pole installation method of this embodiment is a method for installing a pole formed of a divided pole formed by connecting multiple columnar bodies, and is characterized by making it possible to easily install each device to be installed on the pole while also enabling high accuracy in installing the equipment.

[0013] The utility pole to be installed by the utility pole installation method of this embodiment is not particularly limited. For example, a utility pole (split pole) formed of three columnar bodies, a base pole, a lower pole, and an upper pole, can be mentioned, but the utility pole installation method of this embodiment can also be used for installing a utility pole formed of two columnar bodies or a utility pole formed of four or more columnar bodies.

[0014] Furthermore, in the utility pole installed by the utility pole installation method of the present embodiment, the devices and facilities installed on the utility pole are not particularly limited. For example, the devices and facilities installed on the utility pole may include arms and fittings for supporting a transformer or electric wires, switches, etc.

[0015] In the following, a case will be described in which a utility pole consisting of three pillar-shaped bodies, a base pole, a lower pole, and an upper pole, is installed using the utility pole installation method of this embodiment, and the equipment installed on the utility pole includes a transformer.

[0016] <Electric Pole EP> First, the utility pole EP installed by the utility pole installation method of this embodiment will be described. In Fig. 1(A), the symbol EP indicates a utility pole to be installed by the utility pole installation method of this embodiment. This utility pole EP is formed by connecting a foundation pole EP3 corresponding to the base pole, an intermediate pole EP2 corresponding to the lower pole, and an equipment installation pole EP1 corresponding to the upper pole.

[0017] The foundation pole EP3 is a concrete pole erected on the ground G on which the utility pole EP is to be installed. This foundation pole EP3 is usually fixed to the ground G with its lower end buried in the ground G and its central axis vertical (or perpendicular to the ground).

[0018] The lower end of the intermediate column EP2 is installed at the upper end of the foundation column EP3 so that its central axis is coaxial with the central axis of the foundation column EP3. The intermediate column EP2 is made of a hollow steel pipe with an opening at its lower end, and has a structure in which it can be connected to the foundation column EP3 by inserting the upper end of the foundation column EP3 into the intermediate column EP2 through the opening at the lower end. In addition, the intermediate column EP2 need only have an opening at its lower end and a structure that allows it to be connected to the foundation column EP3 by inserting the upper end of the foundation column EP3 into the intermediate column EP2 through this opening, and it does not necessarily have to be a hollow steel pipe.

[0019] The equipment installation pole EP1 is provided with various equipment (hereinafter, sometimes referred to as installed equipment) that is provided on the utility pole EP. The lower end of this equipment installation pole EP1 is installed at the upper end of the intermediate pole EP2 so that its central axis is coaxial with the central axis of the intermediate pole EP2. The equipment installation pole EP1 is formed of a hollow steel pipe with an opening at the lower end, and has a structure that allows the intermediate pole EP2 to be connected to the intermediate pole EP2 by inserting the upper end of the intermediate pole EP2 into the equipment installation pole EP1 from the opening at the lower end. In other words, the equipment installation pole EP1 has a connection hole Ph with an opening at the lower end formed at its lower end, and has a structure that allows the upper end of the intermediate pole EP2 to be inserted into this connection hole Ph. In addition, the equipment installation column EP1 does not necessarily have to be a hollow steel pipe as long as it has a structure having a connecting hole Ph with an opening at its lower end.

[0020] The lengths of the foundation pillars EP3, intermediate pillars EP2, and equipment installation pillars EP1 are not particularly limited. For example, the lengths of the foundation pillars EP3, intermediate pillars EP2, and equipment installation pillars EP1 are about 7000 mm, about 5000 mm, and about 3000 mm, respectively. As described later, when the equipment installation pillar EP1 is loaded on the loading platform C of the transport vehicle TC so as to stand on the loading surface of the loading platform C, and the transport vehicle TC travels on a general road or a highway in this state (see FIG. 1(B)), it is desirable that the equipment installation pillar EP1 has a length such that the height H (see FIG. 1(B)) from the ground to the top end of the equipment installation pillar EP1 when loaded on the loading platform C of the transport vehicle TC is 3.8 m or less. In the case where the equipment installation pillar EP1 is the upper pillar of a typical divided pillar, if the height H from the ground to the top end of the equipment installation pillar EP1 when loaded on the loading platform C of the transport vehicle TC (if the installed equipment has a part located higher than the top end of the equipment installation pillar EP1, the height to the top end including the equipment) is to be 3.8 m or less, then it is desirable for the length of the equipment installation pillar EP1 to be approximately 3000 mm.

[0021] <Installation method of utility pole according to this embodiment> In the above-described utility pole installation method of the present embodiment, the utility pole EP is installed in the following manner. First, an installation device is attached to the equipment installation pole EP1 before it is connected to the intermediate pole EP2 (equipment installation process). Specifically, the installation device is attached to the equipment installation pole EP1 at a location different from the location where the utility pole EP is to be installed. More specifically, the installation device is attached to the equipment installation pole EP1 at a location different from the location where the utility pole EP is to be installed without using an aerial work vehicle or the like. Then, the equipment installation pole EP1 with the installation device attached is loaded onto a transport vehicle TC and transported to the location where the utility pole EP is to be installed (transport process, see FIG. 2(A)). The method of attaching the equipment to the equipment installation pole EP1 in the equipment installation process (i.e., the method of assembling the utility pole member of this embodiment) and the method of transporting the equipment installation pole EP1 by the transport vehicle TC will be described in detail later.

[0022] Meanwhile, at the location where the utility pole EP is to be installed, first, the foundation pole EP3 is erected on the ground G in the same manner as a general utility pole, and then the intermediate pole EP2 is installed on the erected foundation pole EP3. In other words, the intermediate pole EP2 is installed on the upper end of the foundation pole EP3 so that the upper end of the foundation pole EP3 is inserted into the opening at the lower end of the intermediate pole EP2 (see FIG. 2(A)).

[0023] When the intermediate column EP2 is installed on the upper end of the foundation column EP3, the equipment installation column EP1 to which the installation equipment is attached is installed on the intermediate column EP2. In other words, the equipment installation column EP1 is installed on the upper end of the intermediate column EP2 so that the upper end of the intermediate column EP2 is inserted into the opening at the lower end of the equipment installation column EP1 (see FIG. 2(B)).

[0024] Once the equipment installation pole EP1 is installed, workers use the aerial work vehicle HT to connect the equipment to the high-voltage line HL and low-voltage line. The installation of the utility pole EP is completed by connecting the equipment to the service line (see Figure 1 (A)).

[0025] As described above, in the utility pole installation method of this embodiment, the installation equipment is attached to the equipment installation pole EP1 at a location other than the location where the utility pole EP is to be installed, and the equipment installation pole EP1 to which the installation equipment is attached is transported by the transport vehicle TC to the location where the utility pole EP is to be installed. Then, at the location where the utility pole EP is to be installed, the work of connecting the equipment installation pole EP1 to which the installation equipment is attached to the upper end of the intermediate pole EP2 is performed. Also, on the high-altitude work vehicle at the location where the utility pole EP is to be installed, only work that is relatively light for the worker, such as work of connecting the installation equipment to the high-voltage line HL, etc., and work of connecting the installation equipment to the low-voltage line, the service line, etc., is performed. In other words, in the high-altitude work, only work that is relatively light for the worker needs to be performed, and there is no need to perform work that is heavy on the worker, such as installing the installation equipment.

[0026] Therefore, the utility pole installation method of this embodiment can reduce the burden on workers in the installation work of the utility pole EP. Moreover, the installation work of the installation equipment on the equipment installation pole EP1 can be performed at a location other than the location where the utility pole EP is installed and without using an aerial work vehicle or the like, and the manager can closely check the installation state of the installation equipment on the equipment installation pole EP1, so that the installation accuracy of the installation equipment on the equipment installation pole EP1 can be improved.

[0027] <How to transport the equipment installation pole EP1 by vehicle> When the equipment installation pole EP1 is transported by vehicle, the equipment installation pole EP1 to which the installation equipment is attached is installed on the transport vehicle TC and transported. In the case of a relatively long member such as the equipment installation pole EP1, a method is generally used in which the equipment installation pole EP1 is loaded onto the transport vehicle TC so that the axial direction of the equipment installation pole EP1 is aligned with the front-rear direction of the body of the transport vehicle TC (for example, so that it is horizontal) when transporting. Even in the utility pole installation method of this embodiment, depending on the type of installation equipment to be installed on the equipment installation pole EP1, the equipment installation pole EP can be loaded onto the transport vehicle TC by the general method as described above and transported by the transport vehicle TC.

[0028] On the other hand, if the equipment to be installed on the equipment installation pole EP1 includes a transformer T, a switch, etc., the equipment installation pole EP1 cannot be transported in a horizontal state. Therefore, in the utility pole installation method of this embodiment, when a transformer T or the like is installed on the equipment installation pole EP1 and transported, the equipment installation pole EP1 is transported in an upright state on the loading platform C of the transport vehicle TC. In other words, in the utility pole installation method of this embodiment, when the equipment installation pole EP1 is loaded on the loading platform C of the transport vehicle TC, the equipment installation pole EP1 is loaded on the loading platform C of the transport vehicle TC so that the axial direction is erected on the loading surface of the loading platform C (see FIG. 1(B)). For example, if the transport vehicle TC is placed on a horizontal ground G, the equipment installation pole EP1 is loaded on the loading platform C of the transport vehicle TC so that the axial direction is approximately perpendicular to the ground G. In the following, "loading the equipment installation pillar EP1 onto the loading platform C of the transport vehicle TC so that the axial direction is erected on the loading surface of the loading platform C" may be referred to as "loading the equipment installation pillar EP1 vertically onto the loading platform C of the transport vehicle TC."

[0029] By loading the equipment installation pole EP1 vertically on the loading platform C of the transport vehicle TC in this manner, even if equipment such as a transformer T is installed on the equipment installation pole EP1, the equipment such as the transformer T can be transported in a stable state.

[0030] When the equipment installation pole EP1 is loaded vertically, the method of maintaining the state is not particularly limited. Any method may be adopted as long as the equipment installation pole EP1 can be stably installed on the loading surface of the loading platform C of the transport vehicle TC. For example, the equipment installation pole EP1 may be held in an upright state by a wire or the like, or a pole construction member that holds the equipment installation pole EP1 in an upright state on the loading platform C of the transport vehicle TC may be provided to hold the equipment installation pole EP1 in an upright state. As such a pole construction member, for example, a cylindrical member into which the lower end of the equipment installation pole EP1 can be inserted, or a member equipped with equipment that holds the lower end of the equipment installation pole EP1 by pinching it, may be adopted. In addition, a support shaft erected on the loading platform C of the transport vehicle TC may be provided as the pole construction member. In this case, if the support shaft is inserted into the connecting hole Ph of the equipment installation pole EP1, the equipment installation pole EP1 can be easily installed so as to be in a predetermined position. In addition, even when the transport vehicle TC is traveling, the equipment installation pole EP1 can be effectively prevented from tilting.

[0031] When a support shaft is provided on the loading platform C of the transport vehicle TC, the equipment installation pillar EP1 can be stably erected on the loading platform C of the transport vehicle TC by fixing the support shaft to the loading platform C. However, in this case, when other articles are transported by the transport vehicle TC, the support shaft may get in the way when loading the articles onto the loading platform C. Therefore, when the equipment installation pillar EP1 is loaded vertically and a support shaft is used, it is desirable to detachably provide the support shaft on the loading platform C of the transport vehicle TC.

[0032] <Utility pole construction materials 10> Moreover, as the utility pole installation member, a utility pole installation member 10 including a holding pole 12 having a function equivalent to that of the above-mentioned support shaft can be used. The utility pole installation member 10 will be described below.

[0033] As shown in Figs. 3 and 4, the utility pole installation member 10 has a base member 11 and a holding pole 12 that holds the equipment installation pole EP1.

[0034] The base member 11 is a plate-shaped member that can be placed on the platform C of the transport vehicle TC with its lower surface placed on the loading surface of the platform C of the transport vehicle TC.

[0035] A support column 12 is erected on the upper surface of the base member 11. The support column 12 is formed to a size that allows it to be inserted into the connecting hole Ph from the opening at the lower end of the equipment installation column EP1, and is provided so that when the equipment installation column EP1 is attached, the lower end of the equipment installation column EP1 comes into contact with the upper surface of the base member 11. If a pedestal or the like on which the lower end of the equipment installation column EP1 is placed is provided on the upper surface of the base member 11, the upper surface of the pedestal also corresponds to the upper surface of the base member 11 that comes into contact with the lower end of the equipment installation column EP1.

[0036] The main body 12a of the support column 12 is a shaft-shaped member formed of a steel pipe or the like with an outer diameter shorter than the inner diameter of the equipment installation column EP1. The base end of this main body 12a is fixed to the upper surface of the base member 11 so that its axial direction is perpendicular to the upper surface of the base member 11. The main body 12a of the support column 12 is formed to have an axial length that allows the equipment installation column EP1 to be stably held when the equipment installation column EP1 is held by the support column 12. For example, if the axial length of the equipment installation column EP1 is about 3000 mm, the main body 12a is formed to have an axial length of about 600 mm.

[0037] A support member 12b is provided on the side of the main body 12a. The support member 12b is provided to prevent the equipment installation pole EP1 from rattling when the equipment installation pole EP1 is held by the holding pole 12. Specifically, the support member 12b is provided so that when the equipment installation pole EP1 is held by the holding pole 12, the gap between the outer edge of the support member 12b and the inner surface of the equipment installation pole EP1 is about 2 to 3 mm. For example, if the outer diameter of the main body 12a is about 6 to 8 mm shorter than the inner diameter of the equipment installation pole EP1, the support member 12b is provided so that the height of the support member 12b (the distance from the outer surface of the main body 12a to the outer end of the support member 12b) is about 2 to 3 mm.

[0038] By using the utility pole construction member 10 having the above-mentioned configuration, if the utility pole construction member 10 is placed on the loading platform C of the transport vehicle TC (see FIG. 2(A)), the equipment installation pole EP1 can be vertically loaded on the loading platform C of the transport vehicle TC by installing the equipment installation pole EP1 on the holding pole 12 of the utility pole construction member 10. Also, if the utility pole construction member 10 is removed from the loading platform C of the transport vehicle TC, the loading platform C of the transport vehicle TC can be used as a normal loading platform.

[0039] <Arrangement of retaining columns 12> The position at which the holding pole 12 is installed on the base member 11 of the utility pole installation member 10 is not particularly limited, and it may be installed in the center of the base member 11 as shown in Figures 3 and 4, or may be installed at a position biased toward one of the sides or corners of the base member 11 (see Figures 5 and 6). It is sufficient that the holding pole 12 is installed in a position where the utility pole installation member 10 can stably hold the equipment installation pole EP1 when the equipment installation pole EP1 is installed on the holding pole 12 of the utility pole installation member 10.

[0040] In particular, when the equipment to be mounted on the equipment installation pole EP1 includes a transformer T, it is desirable to arrange the holding pole 12 at a position biased toward one of the sides or corners of the base member 11 rather than the center of the base member 11 (see Figs. 5 and 6). The transformer T is heavy and large even among the equipment to be mounted on the equipment installation pole EP1. For this reason, the utility pole construction member 10 can stably hold the equipment installation pole EP1 if the transformer T is arranged closer to the center of the base member 11 when the equipment installation pole EP1 to which the transformer T is attached is installed on the holding pole 12. In other words, if the holding pole 12 is arranged at a position biased toward one of the sides or corners of the base member 11 rather than the center of the base member 11, the transformer T is more likely to be arranged closer to the center of the base member 11 when the equipment installation pole EP1 to which the transformer T is attached is installed on the holding pole 12.

[0041] In particular, when two transformers T are provided on the equipment installation pole EP1, it is desirable to dispose the support pole 12 at a position biased toward one of the sides (hereinafter referred to as the first side 11a) of the base member 11, and at a substantially midpoint between the two sides intersecting with the first side 11a (see Figs. 5 and 6). When two transformers T are provided on the equipment installation pole EP1, the two transformers T are usually installed so that the angle between the lines connecting the two transformers T and the central axis of the equipment installation pole EP1 is smaller than 180°. Therefore, it is desirable to provide the support pole 12 so that the center of the base member 11 is located in the area (area X in Fig. 5) formed by the central axis of the equipment installation pole EP1 and the centers of the two transformers T when the equipment installation pole EP1 to which the two transformers T are attached is installed on the support pole 12. By installing the supporting pole 12 in such a position, it is also possible to position the center of gravity of the equipment installation pole EP1 on which the two transformers T are attached within the above-mentioned area X, so that when the equipment installation pole EP1 on which the two transformers T are attached is installed on the supporting pole 12, the pole construction member 10 can stably hold the equipment installation pole EP1.

[0042] <Installation of equipment on equipment installation pole EP1> When a transformer T is attached to an equipment installation pole EP1 as an installation device, the installation height of the transformer T is not particularly limited. However, when using the utility pole installation member 10, it is desirable to attach the transformer T to the equipment installation pole EP1 so that the bottom surface of the transformer T is located at the same height as the lower end of the holding pole 12 (i.e., the bottom surface of the transformer T and the lower end surface of the holding pole 12 are located on approximately the same plane) or the transformer T is located lower than the lower end of the holding pole 12. Then, when the equipment installation pole EP1 is installed on the holding pole 12, the bottom surface of the transformer T is placed on the upper surface of the base member 11 (see Fig. 4(B) and Fig. 6(B)). In other words, the weight of the transformer T can be directly supported by the base member 11, so that the utility pole installation member 10 can stably hold the transformer T and the equipment installation pole EP1. Moreover, even if vibrations or forces that move the transformer T occur during transportation by the transportation vehicle TC, the forces acting on the equipment installation column EP1 and on the holding column 12 via the equipment installation column EP1 due to the forces or vibrations can be reduced, making it easier to prevent damage to the equipment installation column EP1 and the holding column 12. Note that the area on the upper surface of the base member 11 on which the bottom surface (lower surface) of the transformer T is placed becomes the support surface referred to in the claims.

[0043] In addition, when two transformers T are installed on the equipment installation pole EP1 as the installation equipment, it is desirable to make the bottom surfaces of the two transformers T at the same height as the lower end of the support pole 12. However, the larger of the two transformers T may be attached to the equipment installation pole EP1 so that its bottom surface is located at the same height as the lower end of the support pole 12 or its bottom surface is located below the lower end of the support pole 12. In this case, the smaller transformer T is in a state of floating above the upper surface of the base member 11, but the utility pole installation member 10 on which the equipment installation pole EP1 is installed may be transported in this state. In addition, a spacer or the like may be placed between the smaller transformer T and the upper surface of the base member 11 so that the load of the smaller transformer T is also supported by the base member 11.

[0044] In addition, in a general utility pole, the primary switch mounting hardware A2 (hereinafter, sometimes simply referred to as the second arm A2) is often attached below the transformer T. For this reason, when the bottom surface of the transformer T is positioned at the same height as the lower end of the support pole 12, or when the transformer T is attached to the equipment installation pole EP1 so that the bottom surface of the transformer T is positioned below the lower end of the support pole 12, as described above, the equipment installation pole EP1 is connected to the intermediate pole EP2, and then the second arm A2 must be installed. However, as shown in FIG. 4(B) and FIG. 6(B), if the second arm A2 is installed so as to be positioned above the transformer T, the second arm A2 can be attached to the equipment installation pole EP1 in advance. This reduces the amount of work (i.e., work at high altitude) after connecting the equipment installation pole EP1 to the intermediate pole EP2, and thus reduces the burden on the worker.

[0045] <About loading the equipment installation pole EP1> As described above, if the utility pole construction member 10 is placed on the loading platform C of the transport vehicle TC, the equipment installation pole EP1 can be loaded vertically on the loading platform C of the transport vehicle TC. On the other hand, if the equipment installation pole EP1 is to be installed on the holding pole 12 of the utility pole construction member 10 after the utility pole construction member 10 is placed on the loading platform C of the transport vehicle TC, the equipment installation pole EP1 to which the installation equipment is attached must be lifted and installed on the holding pole 12 from above. In this case, in order to load the equipment installation pole EP1 vertically on the loading platform C of the transport vehicle TC, the loading work must be carried out at a location where an overhead crane is available or a crane truck or the like must be prepared and used to load the equipment installation pole EP1, which limits the location and time for loading the equipment installation pole EP1 vertically on the loading platform C of the transport vehicle TC.

[0046] On the other hand, if the utility pole construction member 10 on which the equipment installation pole EP1 is installed can be transported by a forklift, the degree of freedom in the location and time for loading the utility pole construction member 10 on which the equipment installation pole EP1 is installed onto the loading platform C of the transport vehicle TC can be increased. For example, the utility pole construction member 10 is placed in a state in which a space Sh is formed between the lower surface of the base member 11 and the floor surface of the ground G or equipment, into which a pair of forks of a forklift can be inserted (see FIG. 4(B)), and the equipment installation pole EP1 is installed on the utility pole construction member 10 in this state. In this case, since the pair of forks of the forklift can be inserted into the lower surface of the utility pole construction member 10 on which the equipment installation pole EP1 is installed, the utility pole construction member 10 on which the equipment installation pole EP1 is installed can be transported by a forklift from the position where the equipment installation pole EP1 is installed on the utility pole construction member 10 to the position of the transport vehicle TC. This increases the degree of freedom in the location where the equipment installation pole EP1 is installed on the utility pole construction member 10 and the location where the utility pole construction member 10 on which the equipment installation pole EP1 is installed is loaded on the transport vehicle TC. In other words, the equipment installation pole EP1 can be installed on the utility pole construction member 10 at a location suitable for installing the equipment installation pole EP1 on the utility pole construction member 10, and the utility pole construction member 10 on which the equipment installation pole EP1 is installed can be loaded on the transport vehicle TC at a location suitable for loading the utility pole construction member 10 on which the equipment installation pole EP1 is installed on the transport vehicle TC, so that each task can be performed efficiently. For example, it becomes possible to install the equipment installation pole EP1 on the utility pole construction member 10 in a building or the like with an overhead crane, transport the utility pole construction member 10 on which the equipment installation pole EP1 is installed by a forklift to the transport vehicle TC parked at a location away from that location, and load the utility pole construction member 10 on which the equipment installation pole EP1 is installed on the transport vehicle TC.

[0047] In addition, by using the utility pole construction member 10, it is possible to prepare an equipment installation pole EP1 to which installation equipment is attached in advance, and therefore it is possible to shorten the construction time of the utility pole EP using the equipment installation pole EP1 to which installation equipment is attached. For example, the equipment installation pole EP1 to which installation equipment is attached (hereinafter simply referred to as the spare equipment installation pole EP1) is stored in a warehouse or the like in a state in which it is attached to the utility pole construction member 10 and can be transported by a forklift. For example, multiple types of spare equipment installation poles EP1 to which different installation equipment is attached are assembled, and the utility pole construction members 10 to which the multiple types of spare equipment installation poles EP1 are attached are stored. Then, when an equipment installation pole EP1 to which a specific installation equipment is attached becomes necessary, it is possible to select the utility pole construction member 10 to which the spare equipment installation pole EP1 to which the installation equipment suitable for the utility pole EP is attached from among the utility pole construction members 10 to which the spare equipment installation pole EP1 is attached, and to carry it out of the warehouse or the like for use.

[0048] <A pair of fork insertion parts 13, 15> As described above, when the utility pole construction member 10 on which the equipment installation pole EP1 is installed is transported by a forklift, the utility pole construction member 10 may be arranged so as to have a space (see Sh in FIG. 4) into which a pair of forks can be inserted. However, in this case, in order to keep the lower surface of the base member 11 of the utility pole construction member 10 above the ground G or floor (hereinafter sometimes referred to as the ground G, etc.), a member (spacer S, see FIG. 4) is required to be arranged between the base member 11 of the utility pole construction member 10 and the ground G, etc. In addition, even when the utility pole construction member 10 on which the equipment installation pole EP1 is installed is loaded on the loading platform C of the transport vehicle TC, a spacer, etc. is required on the loading platform C of the transport vehicle TC. Since the utility pole construction member 10 on which the equipment installation pole EP1 is installed has a certain weight, it is necessary to use a spacer, etc. with high rigidity, and such a spacer, etc. also has a certain weight. In this case, spacers, etc. must be installed in advance at the location where the utility pole construction member 10 on which the equipment installation pole EP1 is installed will be placed, and if the spacer, etc. is to be moved to a desired location, a crane or heavy machinery must be used to move the spacer, etc. Therefore, it may become difficult to freely select a location to store the utility pole construction member 10 on which the equipment installation pole EP1 is installed.

[0049] On the other hand, if a pair of fork insertion parts 13, 15 having a structure as shown in Fig. 5 and Fig. 6 is provided on the utility pole construction member 10, a place for storing the utility pole construction member 10 on which the equipment installation pole EP1 is installed can be freely selected. In other words, the utility pole construction member 10 and the utility pole construction member 10 on which the equipment installation pole EP1 is installed can be directly placed on the ground G or the like for storage, so that a place for storing the utility pole construction member 10 on which the equipment installation pole EP1 is installed can be freely selected. Moreover, since spacers or the like are not required when loading the utility pole construction member 10 on which the equipment installation pole EP1 is installed onto the loading platform C of the transport vehicle TC, there is also an advantage that the height of the utility pole construction member 10 on which the equipment installation pole EP1 is installed can be reduced when transporting it by the transport vehicle TC.

[0050] As shown in Fig. 5 and Fig. 6, a pair of fork insertion parts 13, 15 are provided on the upper surface of the base member 11 of the utility pole installation member 10. The pair of fork insertion parts 13, 15 are provided in the vicinity of the sides facing each other on the base member 11. For example, in Fig. 5, of the pair of fork insertion parts 13, 15, the second fork insertion part 15 is provided in the vicinity of the first side side 11a, and the first fork insertion part 13 is provided in the vicinity of the second side side 11b facing the first side side 11a. The pair of fork insertion parts 13, 15 are formed with through holes 13h, 15h that are provided parallel to each other. The through holes 13h, 15h are formed to a size that allows a pair of forks of a forklift to be inserted, and the inner upper surfaces 13a, 15a are formed so that they are parallel to the upper surface of the base member 11 and are positioned on approximately the same plane.

[0051] By forming a pair of fork insertion parts 13, 15 having the above-mentioned structure, even if the utility pole construction member 10 is arranged so that the lower surface of the base member 11 is directly in contact with the ground G or the like, the utility pole construction member 10 can be lifted by a forklift. In other words, by inserting a pair of forks of a forklift into the through holes 13h, 15h of the pair of fork insertion parts 13, 15, respectively, and lifting the pair of forks, the utility pole construction member 10 can be lifted and transported. Then, no matter how the utility pole construction member 10 on which the equipment installation pole EP1 is installed is installed, it can be lifted and transported by a forklift and placed in a desired location. Then, the utility pole construction member 10 on which the equipment installation pole EP1 is installed can be stored in a desired location such as a warehouse, and the utility pole construction member 10 on which the equipment installation pole EP1 is installed can be directly loaded on the loading platform C of the transport vehicle TC without providing a spacer or the like.

[0052] <Arrangement of the pair of fork insertion portions 13, 15> Furthermore, when the equipment installation pole EP1 on which the transformer T is mounted is held by the holding pole 12, it is desirable for the holding pole 12 to be positioned in a position biased toward the first side edge 11a of the base member 11. In this case, if a pair of fork insertion portions 13, 15 are provided as follows, the utility pole construction member 10 on which the equipment installation pole EP1 is mounted can be transported stably and the utility pole construction member 10 can be made compact.

[0053] For example, as shown in FIG. 7, in the direction in which the pair of fork insertion parts 13, 15 are separated (the up-down direction in FIG. 7(B), sometimes simply referred to as the separating direction), the distance from the first fork insertion part 13, that is, the first fork insertion part 13 of the pair of fork insertion parts 13, 15 that is installed at a position farther from the retaining column 12, to the central axis of the retaining column 12 is set as distance L1. In addition, in the state in which it is installed on the equipment installation column EP1, the distance from the central axis of the equipment installation column EP1 to the outer surface of the transformer T, specifically, the distance from the central axis of the equipment installation column EP1 to the outer surface of the transformer T in the direction connecting the central axis of the equipment installation column EP1 and the central axis of the transformer T (hereinafter sometimes referred to as the connecting direction of the transformer T), is set as distance L2. Then, the first fork insertion part 13 is provided so that the distance L1 is shorter than the distance L2. In this arrangement, when the equipment installation pole EP1 is installed on the holding pole 12, if the connecting direction of the transformer T is arranged parallel to the separation direction, the transformer T will interfere with the first fork insertion part 13. However, if the connecting direction of the transformer T is tilted with respect to the separation direction, the transformer T can be arranged without interfering with the first fork insertion part 13, and the lower surface of the transformer T can be arranged in a state of being placed on the upper surface of the base member 11, so that the equipment installation pole EP1 can be stably arranged on the utility pole installation member 10. In other words, the utility pole installation member 10 on which the equipment installation pole EP1 is installed can be transported stably. Moreover, the distance from the first fork insertion part 13 to the second fork insertion part 15, in other words, the distance from the first side edge 11a to the second side edge 11b of the base member 11 can be shortened to some extent, so that the utility pole installation member 10 can be made compact.

[0054] <When the first insertion portion 15a and the second insertion portion 15b are provided> 7(B), the second fork insertion portion 15 provided at a position close to the holding post 12 (on the side of the first side 11a) may be provided with the first insertion portion 15a and the second insertion portion 15b spaced apart in a direction intersecting the separation direction (the direction along the first side 11a in FIG. 7(B)). Specifically, the first insertion portion 15a and the second insertion portion 15b spaced apart in a direction intersecting the separation direction may be provided at positions sandwiching the holding post 12 when viewed from the separation direction. More specifically, the first insertion portion 15a and the second insertion portion 15b may be provided so that the first insertion portion 15a and the second insertion portion 15b are located near a pair of side edges 11c, 11d (see FIG. 7(B)) that intersect with the first side edge 11a, and the distance between the first insertion portion 15a and the second insertion portion 15b is longer than the width of the support column 12 in a direction intersecting with the separation direction in a state in which the equipment installation column EP1 is attached to the support column 12. In this case, the first insertion portion 15a and the second insertion portion 15b are provided to have substantially the same configuration and shape. Specifically, the first insertion portion 15a and the second insertion portion 15b are provided so that the through holes 15h1, 15h2 are substantially coaxial and the inner upper surfaces 15a1, 15a2 of the through holes 15h1, 15h2 are positioned on substantially the same plane.

[0055] As described above, by providing the first insertion portion 15a and the second insertion portion 15b in the second fork insertion portion 15, the holding pole 12 can be arranged so that a part of the holding pole 12 or a part of the equipment installation pole EP1 in a state where the equipment installation pole EP1 is attached to the holding pole 12 is located between the first insertion portion 15a and the second insertion portion 15b. This allows the holding pole 12 to be installed closer to the first side edge 11a than when the second fork insertion portion 15 is provided over almost the entire direction along the first side edge 11a or when the second fork insertion portion 15 is provided in the middle part of the first side edge 11a (the middle part between the pair of side edges 11c and 11d). This allows the length of the base member 11 in the separation direction to be shortened, and the utility pole installation member 10 can be made smaller in size. In particular, if the holding post 12 is installed closer to the first side edge 11a to the extent that the holding post 12 and the equipment installation post EP1 installed on the holding post 12 do not get in the way when inserting a pair of forks of a forklift into the first insertion portion 15a and the second insertion portion 15b, making it possible to insert the forks into the first insertion portion 15a and the second insertion portion 15b, the length of the base member 11 in the separation direction can be shortened, and the utility pole installation member 10 can be made smaller.

[0056] When the second fork insertion portion 15 has the first insertion portion 15a and the second insertion portion 15b as described above, it is desirable to provide the first fork insertion portion 13 so as to be located between the first insertion portion 15a and the second insertion portion 15b when viewed from the separating direction. In particular, it is desirable to provide the first fork insertion portion 13 in the middle of a pair of side edges 11c, 11d intersecting with the first side edge 11a, or so as to overlap with the holding pole 12 when viewed from the separating direction. By providing the first fork insertion portion 13 in such a position, it is also possible to position the center of gravity of the equipment installation pole EP1 to which the two transformers T are attached at a position surrounded by the first fork insertion portion 13 and the first insertion portion 15a and the second insertion portion 15b of the second fork insertion portion 15. Then, the utility pole construction member 10 to which the equipment installation pole EP1 is installed can be stably lifted and transported by a forklift.

[0057] In particular, when an equipment installation pole EP1 provided with two transformers T is installed on the utility pole installation member 10, it is desirable to provide the first fork insertion part 13 at a position where the first fork insertion part 13 does not come into contact with the two transformers T and where the fork does not come into contact with the two transformers T when the fork is inserted into the through hole 13h of the first fork insertion part 13 in a state where the equipment installation pole EP1 provided with the two transformers T is installed on the utility pole installation member 10. By providing the first fork insertion part 13 at such a position, the distance between the first fork insertion part 13 and the second fork insertion part 15 can be reduced. In other words, the length of the base member 11 in the separation direction can be made shorter, and the utility pole installation member 10 can be made more compact.

[0058] In addition, "the inner upper surfaces 13a, 15a of the through holes 13h, 15h of a pair of fork insertion portions 13, 15 are formed so as to be positioned on approximately the same plane" includes cases where the inner upper surfaces 13a, 15a are positioned on the same plane, where the inner upper surface 13a is slightly inclined relative to the inner upper surface 15a, and where there is a slight difference between the distance from the top surface of the base member 11 to the inner upper surface 13a and the distance from the top surface of the base member 11 to the inner upper surface 15a. In other words, "the inner upper surfaces 13a, 15a of the through holes 13h, 15h of the pair of fork insertion parts 13, 15 are formed to be positioned on approximately the same plane" means that the through holes 13h, 15h of the pair of fork insertion parts 13, 15 are formed so that when the pair of forks of a forklift are inserted into the pair of fork insertion parts 13, 15, respectively, to lift up the utility pole construction member 10 on which the equipment installation pole EP1 is installed, the utility pole construction member 10 can be lifted in a stable state, and the utility pole construction member 10 can be maintained in a stable state even when the forklift travels. This is also true in the case where the second fork insertion part 15 has the first insertion part 15a and the second insertion part 15b.

[0059] In addition, the width of the through holes 13h, 15h of the pair of fork insertion parts 13, 15 may be slightly wider (for example, about 50 to 100 mm wider) than the width of the pair of forks, and the width is not particularly limited. In addition, the width of the through holes 13h, 15h of the pair of fork insertion parts 13, 15 is preferably formed to be the same width, but the widths of both may be formed to be different widths. For example, when the holding post 12 is disposed at a position biased toward the first side edge 11a of the base member 11, the width of the through hole 13h of the first fork insertion part 13, which is disposed at a position farther from the holding post 12, among the pair of fork insertion parts 13, 15, may be made wider than the width of the through hole 15h of the second fork insertion part 15. Specifically, the width of the through hole 15h of the second fork insertion portion 15 may be set slightly wider (for example, about 50 to 100 mm wider) than the width of the pair of forks, and the width of the through hole 13h of the first fork insertion portion 13 may be set slightly wider (for example, about 50 mm wider) than the width of the through hole 15h of the second fork insertion portion 15. In this way, if one of the pair of forks of the forklift is inserted by aligning it with the through hole 15h of the second fork insertion portion 15, the other fork can be inserted into the through hole 13h of the first fork insertion portion 13 without worrying too much about its position. This reduces the workload of the forklift operator when transporting the utility pole construction member 10 on which the equipment installation pole EP1 is installed by the forklift.

[0060] In addition, when the second fork insertion portion 15 has the first insertion portion 15a and the second insertion portion 15b, "the through holes 15h1 and 15h2 are substantially coaxial" includes cases where the through holes 15h1 and 15h2 completely overlap when viewed from a direction perpendicular to the separation direction, cases where the axial direction of the through hole 15h1 is slightly inclined with respect to the axial direction of the through hole 15h2, cases where the through holes 15h1 and 15h2 are slightly misaligned in the separation direction, etc. In other words, "the through holes 15h1 and 15h2 are substantially coaxial" means that the first insertion portion 15a and the second insertion portion 15b are formed so that when a pair of forks of a forklift are inserted into the pair of fork insertion portions 13 and 15 from the first insertion portion 15a side (or from the second insertion portion 15b side), one fork can be inserted into both the through hole 15h1 of the first insertion portion 15a and the through hole 15h2 of the second insertion portion 15b.

[0061] In addition, when the second fork insertion portion 15 has the first insertion portion 15a and the second insertion portion 15b, "the inner upper surfaces 15a1, 15a2 of the through holes 15h1, 15h2 are located on approximately the same plane" includes cases where the inner upper surfaces 15a1, 15a2 are located on the same plane, where the inner upper surface 15a1 is slightly inclined with respect to the inner upper surface 15a2, and where there is a slight difference between the distance from the top surface of the base member 11 to the inner upper surface 15a1 and the distance from the top surface of the base member 11 to the inner upper surface 15a2. In other words, "the inner upper surfaces 15a1, 15a2 of the through holes 15h1, 15h2 are located on approximately the same plane" means that when a pair of forks of a forklift are inserted into the pair of fork insertion portions 13, 15, respectively, and one of the pair of forks is inserted into both the first insertion portion 15a and the second insertion portion 15b of the second fork insertion portion 15 to lift up the utility pole construction member 10 on which the equipment installation pole EP1 is installed, the first insertion portion 15a and the second insertion portion 15b are formed so that the utility pole construction member 10 can be lifted in a stably state and the utility pole construction member 10 can be maintained in a stable state even when the forklift is traveling.

[0062] <How to assemble utility pole components> The equipment installation pole EP1 on which the above-mentioned installation equipment is attached may be simply erected on the ground G or the like, and the installation equipment may be installed on the equipment installation pole EP1 in this state. Even in this case, the installation equipment can be attached to the equipment installation pole EP1 at a lower position than when the equipment installation pole EP1 is attached to the upper end of the intermediate pole EP2. This reduces the burden on the worker who performs the work of attaching the installation equipment to the equipment installation pole EP1, and the administrator can closely check the installation state of the installation equipment on the equipment installation pole EP1, thereby improving the installation accuracy of the installation equipment on the equipment installation pole EP1.

[0063] However, even in this case, since the equipment installation column EP1 has a certain height, the worker may have to work on a stepladder or the like to lift the equipment up to the installation height, which places a certain degree of workload on the worker.

[0064] On the other hand, if the installation equipment is installed on the equipment installation pole EP1 using the following method (the assembling method of the utility pole component of this embodiment), the worker can install the installation equipment on the ground G or the like, and it is no longer necessary to lift the installation equipment to a very high position, so that the workload of the worker can be significantly reduced. The assembling method of the utility pole component of this embodiment will be described below.

[0065] The method for assembling a utility pole component of this embodiment is carried out in the following location.

[0066] <Lifting equipment b> As shown in Fig. 9, a crane and a winch for lifting the equipment installation pole EP1 and the equipment to be installed on the equipment installation pole EP1 are installed in a place where the method for assembling a utility pole component of this embodiment is carried out (hereinafter, may be referred to as a work place). For example, in Fig. 9, a stand K is installed in the work place, and a winch W is installed on this stand K. This winch W is provided so as to be movable along a girder K1 of the stand K, and the equipment installation pole EP1 and the equipment can be moved in a lifted state by the winch W.

[0067] The work location may be outdoors or inside a building such as a warehouse. Fig. 9 shows a case where the work location is outdoors and the platform K is installed at the work location, but if the work location is inside a building such as a warehouse, a platform equipped with a winch as described above may be installed inside the building, and if the building has an overhead crane or the like, the overhead crane can be used as equipment for lifting and moving the equipment installation column EP1 and the equipment to be installed on the equipment installation column EP1.

[0068] <Containment recess Gh> As shown in FIG. 9, the ground G of the work site is provided with a storage recess Gh recessed from the ground G (corresponding to the work surface in the claims). This storage recess Gh holds the equipment installation column EP1 on which the equipment is installed with its lower end housed. In other words, when the equipment installation column EP1 is inserted into the storage recess Gh, the storage recess Gh can hold the equipment installation column EP1 in an upright state (see FIG. 10(A)). The storage recess Gh is formed at a depth such that, when the equipment installation column EP1 is inserted, the part of the equipment installation column EP1 on which the equipment is installed is located above the ground G of the work site. Moreover, the storage recess Gh is formed at a depth such that the equipment installation column EP1 can stably maintain its upright state when the equipment is installed. For example, if the axial length of the equipment installation column EP1 is about 3000 mm, the storage recess Gh is formed at a depth of about 1500 mm. Moreover, the accommodation recess Gh is formed so that its inner diameter is slightly (for example, about 80 to 110 mm) larger than the outer diameter of the equipment installation pole EP1.

[0069] The depth and inner diameter of the accommodating recess Gh need only be formed so as to be able to accommodate the lower end of the equipment mounting column EP1 and to stably maintain the equipment mounting column EP1 in an upright position when the equipment is installed, and are not limited to the above-mentioned sizes.

[0070] In addition, a connecting hole Ph is formed at the lower end of the equipment mounting column EP1, so if a shaft material that can be inserted into this connecting hole Ph is provided inside the accommodating recess Gh, it becomes easier to maintain the equipment mounting column EP1 in a stably upright position.

[0071] <Utility pole construction materials 10> As shown in Fig. 9, the above-mentioned utility pole installation member 10 is placed near the accommodation recess Gh. When the utility pole installation member 10 is provided with a pair of fork insertion parts 13, 15 as described above (see Figs. 5 and 7), it is placed directly on the ground G or the like (see Figs. 6 and 8). When the utility pole installation member 10 is not provided with a pair of fork insertion parts 13, 15, it is placed via a spacer or the like (see Fig. 4(B)). In other words, the utility pole installation member 10 is placed so that a gap large enough to insert the forks of a forklift is formed between the lower surface of the base member 11 and the ground G or the like.

[0072] In addition, if the utility pole construction member 10 is provided with a portion (e.g., a hook) onto which the wire of the winch W can be hooked, or the like, and the utility pole construction member 10 can be lifted by the winch W, even if the utility pole construction member 10 does not have a pair of fork insertion portions 13, 15, it may be placed directly on the ground G, etc.

[0073] <How to assemble utility pole components> The work of installing equipment on the equipment installation pole EP1 in the work area described above will be described. In the following example, a case will be described in which a second arm A2 in which a cutout CT and a high-voltage downline HRL are installed is installed between a first arm A1 in which a high-voltage line HL is installed and a transformer T on an equipment installation pole EP1.

[0074] First, the equipment installation pole EP1 is lifted by a winch W provided on the frame K, the lower end of the equipment installation pole EP1 is inserted into the accommodation recess Gh, and the equipment installation pole EP1 is erected on the ground G or the like (pole arrangement process S1). In this state, the part of the equipment installation pole EP1 on which the transformer T is to be installed is inserted into the accommodation recess Gh. In other words, the equipment installation pole EP1 is erected on the ground G or the like so that the part above the part on which the transformer T is installed is positioned above the ground G or the like.

[0075] When the equipment installation pole EP1 is erected on the ground G or the like, equipment is installed on a portion of the equipment installation pole EP1 that is located above the ground G or the like when inserted into the accommodation recess Gh (first assembly process S2). For example, in the first assembly process S2, a first arm A1 is installed on the upper portion of the equipment installation pole EP1. Also, one end of the high-voltage downline HRL installed between the first arm A1 and the second arm A2 is attached to the first arm A1 (FIG. 10(A)).

[0076] In this state, the first arm A1 is positioned at approximately eye level of the worker, so the worker can reliably and easily install the first arm A1 and the high-voltage downline HRL. In addition, the manager can also check the installation status at approximately eye level, which improves installation accuracy.

[0077] When the first assembly step S2 is completed, the equipment installation pillar EP1 is lifted up by the winch W, and the equipment installation pillar EP1 is extracted from the accommodation recess Gh (extraction step S3).

[0078] The equipment installation pole EP1 extracted in the extraction step S3 is moved to above the utility pole installation member 10 arranged near the accommodation recess Gh, and then the equipment installation pole EP1 is moved downward, and the holding pole 12 of the utility pole installation member 10 is inserted into the connection hole Ph of the equipment installation pole EP1. Then, the equipment installation pole EP1 is held by the holding pole 12 of the utility pole installation member 10 and is in an upright state (pole holding step S4).

[0079] When the equipment installation pole EP1 is held by the holding pole 12 of the utility pole installation member 10, the equipment is installed in the part of the equipment installation pole EP1 below the first arm A1, that is, in the part where the equipment could not be installed when the lower end of the equipment installation pole EP1 is inserted into the accommodation recess Gh (second assembly process S5). For example, the second arm A2 is installed below the first arm A1, and a cutout CT is installed in the second arm A2 (note that the cutout CT may be installed in the second arm A2 in advance). In addition, the other end of the high-voltage downline HRL is installed in the cutout CT of the second arm A2. When the transformer T is installed below the second arm A2, the installation of all the equipment to be installed on the equipment installation pole EP1 is completed (FIG. 10(B)).

[0080] When the equipment installation pole EP1 is held by the holding pole 12 of the utility pole construction member 10, the second arm A2 is positioned approximately at eye level with the worker, so that the worker can reliably and easily install the second arm A2 and the cutout CT of the high-voltage downline HRL, and the manager can also easily check the installation status.

[0081] In addition, since the heavy transformer T can be installed while it is placed almost on the upper surface of the base member 11, the burden on the worker when installing the transformer T can be greatly reduced. In addition, the manager can check the installation status almost at eye level, which improves installation accuracy.

[0082] Then, when the second assembly process S5 is completed, the utility pole construction member 10 is transported by a forklift in a state where the equipment installation pole EP1 with the installation equipment attached is installed. For example, the utility pole construction member 10 with the equipment installation pole EP1 installed is transported to the loading platform C of the transport vehicle TC. Then, in a state where the equipment installation pole EP1 is installed on the utility pole construction member 10, it can be transported by the transport vehicle TC to the installation location of the utility pole EP. Also, if the utility pole construction member 10 with the equipment installation pole EP1 installed is transported to a storage location such as a warehouse, the equipment installation pole EP1 can be stored in the storage location in a state where it is installed on the utility pole construction member 10.

[0083] In the above explanation, the second assembly process S5 is performed after the pillar holding process S4. However, if all of the equipment to be installed on the equipment installation pillar EP1 can be installed by the first assembly process S2 alone, the second assembly process S5 is not necessary.

[0084] Conversely, when there are many devices of different heights to be installed on the equipment installation column EP1, multiple storage recesses Gh with different depths may be provided, and the height at which the devices are installed on the equipment installation column EP1 may be adjusted to a height that is easy for the worker to work at. For example, a column arrangement process is performed in which the equipment is installed on the equipment installation column EP1 in a first storage recess Gh with a deep depth, and an assembly process is performed in which the installed equipment is attached in that state, and then a column arrangement process is performed in which the equipment is installed on the equipment installation column EP1 in a second storage recess Gh with a shallower depth than the first storage recess Gh, and an assembly process is performed in which the installed equipment is attached in that state. After performing these processes in sequence, the column holding process may be performed.

[0085] <When installing other utility pole construction materials> In the above example, the case has been described where the equipment installation pole EP1 on which the equipment is installed in the accommodation recess Gh is removed from the accommodation recess Gh and then installed in the utility pole construction member 10. However, as shown in FIG. 11, the equipment installation pole EP1 removed from the accommodation recess Gh may be held by an axis-shaped utility pole construction member GP installed on the ground G or the like provided near the accommodation recess Gh. When the equipment installation pole EP1 removed from the accommodation recess Gh is held by an axis-shaped utility pole construction member GP, the equipment installation work is easier to perform than when the equipment installation pole EP1 is installed on the holding pole 12 of the utility pole construction member 10 and the equipment is attached thereto. Therefore, the utility pole construction member GP may be installed, and the equipment may be attached in a state where the equipment installation pole EP1 is installed in the utility pole construction member GP, and then the equipment installation pole EP1 may be installed in the utility pole construction member 10. [Industrial Applicability]

[0086] The utility pole installation method of the present invention is suitable as a method for installing a utility pole on which various types of equipment to be mounted on the utility pole are previously installed. [Explanation of symbols]

[0087] 10. Electric pole construction materials 11 Base material 12 Holding Pillar 13 Fork insert 13h through hole 15 Fork Insert 15h through hole 15h1 through hole 15h2 through hole 15a First insertion part 15b Second insertion part L1: Distance from the first fork insertion portion 13 to the central axis a of the support column 12 L2 Distance from the central axis of the equipment installation pole EP1 to the outer surface of the transformer T EP1 Equipment installation pillar Ph connecting hole EP2 Intermediate pillar EP3 foundation pillar TC Transport Vehicle C. Cargo bed Gh Storage recess

Claims

1. A method for installing a utility pole having a plurality of connected pillar-shaped bodies, comprising the steps of: an equipment installation process for installing the equipment on an equipment installation pole, which is a pole-shaped body on which the equipment to be installed on the utility pole is to be installed, among a plurality of pole-shaped bodies at an assembly site separate from an installation site where the utility pole is installed; a transporting step of transporting the equipment installation pole on which the equipment is installed in the equipment installation step from the assembly site to the installation site by a vehicle; A connecting step is performed in which the equipment installation pole transported in the transport step is connected to an upper end of a lower pole, which is a columnar body erected at the installation location. A method for installing utility poles comprising the steps of:

2. In the transport step, The equipment installation pole is transported while being held by a utility pole construction member provided on the vehicle that holds the equipment installation pole in an upright position.

2. The method for installing a utility pole according to claim 1.

3. When held by the utility pole construction member, the height from the ground to the top end of the equipment installation pole is 3.8 m or less.

3. The method for installing a utility pole according to claim 2.

4. The equipment installed on the equipment installation pole in the equipment installation step includes a transformer, The utility pole installation member includes: A support surface is provided on which the lower surface of the transformer installed on the equipment installation pole is placed when the equipment installation pole is held by the utility pole construction member.

3. The method for installing a utility pole according to claim 2.

5. In the equipment installation step, a pole arrangement process for inserting a lower end of the equipment installation pole into a receiving recess recessed from a work surface of a work place where a worker installs the equipment on the equipment installation pole; and an assembly process of installing the equipment on the equipment installation column accommodated in the accommodation recess in the column arrangement process.

2. The method for installing a utility pole according to claim 1.

6. A pole installation member is provided for holding the equipment installation pole in an upright position, In the equipment installation step, an extraction step of extracting the equipment installation column on which the equipment is installed in the assembly step from the accommodation recess; and a pole holding step of holding the equipment installation pole extracted from the accommodation recess in the extraction step by a pole construction member that holds the equipment installation pole in an upright state.

6. The method for installing a utility pole according to claim 5.

7. A step of installing the equipment that could not be installed on the equipment installation pole in the state accommodated in the accommodation recess is performed on the equipment installation pole held by the utility pole construction member in the pole holding step.

7. The method for installing a utility pole according to claim 6.

8. The equipment installation column is At its lower end, there is a connecting hole into which the upper end of the lower pillar is inserted, The utility pole installation member is A base member; A holding member for holding the equipment installation pole, The holding member is a support column that is provided on an upper surface of the base member and is inserted into a connection hole of the equipment installation column; In the column holding step, The equipment installation pole extracted from the accommodation recess in the extraction step is placed on the utility pole installation member so that the holding pole of the utility pole installation member is inserted into the connecting hole of the equipment installation pole.

7. The method for installing a utility pole according to claim 6.

9. The utility pole installation member is movable, A loading step is carried out to load the utility pole construction member holding the equipment installation pole onto the vehicle.

9. The method for installing a utility pole according to claim 6, 7 or 8.

10. A method for assembling a utility pole member used for a utility pole having a plurality of connected columnar bodies, comprising the steps of: The utility pole member, The electric pole includes an equipment to be installed on the electric pole, and an equipment installation pole which is a pole on which the equipment is installed among a plurality of pole-shaped bodies, a pole arrangement process for inserting a lower end of the equipment installation pole into a receiving recess recessed from a work surface of a work place where a worker installs the equipment on the equipment installation pole; and an assembly process of installing the equipment on the equipment installation column accommodated in the accommodation recess in the column arrangement process. A method for assembling a utility pole component, comprising the steps of:

11. A pole installation member is provided for holding the equipment installation pole in an upright position, an extraction step of extracting the equipment installation column on which the equipment is installed in the assembly step from the accommodation recess; and a pole holding step of holding the equipment installation pole extracted from the accommodation recess in the extraction step on the utility pole installation member. The method for assembling a pole member according to claim 10,

12. The equipment installation column is At its lower end, there is a connecting hole into which the upper end of the lower pole, which is a columnar body erected at the installation location of the utility pole, is inserted; The utility pole installation member is A base member; A holding member for holding the utility pole member, The holding member is A holding pole is provided on an upper surface of the base member and is inserted into a connecting hole of an equipment installation pole of the utility pole member, In the column holding step, The equipment installation pole extracted from the accommodation recess in the extraction step is placed on the utility pole installation member so that the holding pole of the utility pole installation member is inserted into the connection hole of the equipment installation pole. The method for assembling a pole member according to claim 11,

13. A pole construction member for holding a pole member used for a pole having a plurality of pillar-shaped bodies connected thereto, The utility pole member is The electric pole includes an equipment to be installed on the electric pole, and an equipment installation pole which is a pole on which the equipment is installed among a plurality of pole-shaped bodies, The utility pole construction member is A base member; A holding member for holding the utility pole member, The holding member is A holding pole is provided on the upper surface of the base member and is inserted into a connecting hole of an equipment installation pole of the utility pole member. A member for installing utility poles.

14. The equipment installed on the utility pole includes a transformer, The utility pole installation member includes: A support surface is provided on which the lower surface of the transformer installed on the equipment installation pole is placed when the utility pole member is installed on the equipment installation pole of the holding pole. A pole installation member according to claim 13.

15. The upper surface of the base member is provided with: The forklift has a pair of fork insertion portions that are installed at positions spaced apart from each other and into which a pair of forks of the forklift can be inserted, The pair of fork inserts include: The support pillar and / or the support surface are positioned between the two.

15. A pole installation member according to claim 13 or 14.

16. The pair of fork insertion portions are The distance L1 from a first fork insertion portion installed at a position farther from the holding pole in the direction in which the pair of fork insertion portions are separated to the central axis of the holding pole is set to be shorter than the distance L2 from the outer surface of the transformer to the central axis of the equipment installation pole in a state in which the utility pole installation member is installed on the equipment installation pole.

16. A pole installation member according to claim 15.

17. The pair of fork insertion portions are The second fork insertion portion is provided at a position close to the support post in a direction in which the first fork insertion portion and the second fork insertion portion are separated from each other, and includes a first insertion portion and a second insertion portion that are separated from each other in a direction intersecting the direction in which the pair of fork insertion portions are separated from each other, The first insertion portion and the second insertion portion are When viewed from a direction in which the first fork insertion portion and the second fork insertion portion are separated from each other, the first fork insertion portion and the second fork insertion portion are provided so as to sandwich the holding post, The retaining post and the first fork insertion portion are When viewed from a direction in which the first fork insertion portion and the second fork insertion portion are separated from each other, the retaining post and the first fork insertion portion are positioned between the first insertion portion and the second insertion portion of the second fork insertion portion.

17. The utility pole installation member according to claim 16.

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