JP2009215816A - Intermediate landing structure of steel pipe pole tower for power transmission - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an intermediate landing structure of a steel pipe pole tower for power transmission capable of eliminating removing and restoring constructions for an intermediate landing when a tower wiring construction is performed, improving working efficiency and safety, and reducing cost. <P>SOLUTION: The intermediate landing 10 comprises a floor plate 11 surrounding the outer periphery of a tower pole 2 excluding the portion of a ladder 4, a supporting member 12 for supporting the floor plate 11, and a handrail 13 installed on the outer periphery of the floor plate 11. The floor plate 11 is divided into a plurality of pieces in the circumferential direction of the tower pole 2, and any quantity of divided floor plates 20a among the divided floor plates 20 are attached to an outer frame member 31 with a hinge member to form the landing in an upwardly openable type. The necessary divided floor plate 20a of the openable type is opened to allow a wire and a member for wire installation to pass through an opening 33, and closed to use as the intermediate landing. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an intermediate landing structure provided on a tower pillar of a steel pipe pillar tower for power transmission.

  A ladder and an intermediate landing are provided for maintenance on the tower pillars of steel pipe pillars for transmission such as single pillars. This intermediate landing is bolted to the outer periphery of the tower column at a position 4 to 5m below the lowest brace that supports the wire, and is expanded to a steel frame processed into a donut shape with an outer diameter of about 4m. A floor plate made of metal (about 8 divisions) is welded, and a handrail made of bar steel having a height of about 1 m is provided on the outer periphery.

  Such an intermediate landing is a hindrance to the wire for laying wires (for example, see Patent Documents 1 and 2) and the wire for unloading equipment when carrying out overhead wire construction. Overhead construction work is carried out, and an intermediate dance hall is set up after the construction is completed, which requires removal and installation work.

  In addition, there exists patent document 3 as a prior art document relevant to this invention. The invention of Patent Document 3 relates to a scaffold device and a scaffold construction method used to secure a work space when performing various operations on a wall surface at a high position such as a building or a pillar, and opens to a horizontal scaffold. An open / close scaffolding plate having a toe plate that can be bent upright and is hingedly connected to the side edge of the scaffold main body so as to be able to close the lift is provided to improve the point that the lift is a dead space.

JP-A 64-26315 JP 2006-67769 A JP-A-9-287284

  In the case of conventional intermediate landings, (1) installation / removal of temporary work platforms is necessary for removal / rehabilitation of intermediate landings in overhead wire construction, etc. (2) most of the work is in confined areas, -It takes time to raise and lower between the ground, (3) Since it is impossible to remove the part of the structure, because it is divided and assembled on the tower, there is a high risk of tools and materials falling, etc. There are major problems in terms of construction and safety, as well as an increase in costs.

  The present invention is intended to solve the above-mentioned problems, and it is not necessary to remove or restore the intermediate landing for the construction work of the overhead tower, etc., so that the workability and safety can be improved and the cost can be reduced. The purpose is to provide an intermediate landing structure for steel pipe columns.

  The invention according to claim 1 of the present invention is an intermediate landing structure provided in a tower pillar of a steel pipe pillar tower for power transmission, and a floor plate provided so as to surround the tower pillar is divided into a plurality in the circumferential direction of the tower pillar. An intermediate landing structure of a steel pipe pillar tower for power transmission, wherein any number of divided floor boards among the floor boards is provided so as to be openable and closable upward.

  As shown in FIG. 1, the present invention is applied to an intermediate landing set under the lower arm of the steel pipe pillar tower for power transmission. As shown in FIG. 2, since the tower columns are provided with ladders, it is preferable that the left and right sides of the ladders are fixed split floor boards and the remaining floor boards are open / closed split floor boards. As shown in the illustrated example, for example, six locations are openable / closable, for example, four locations are used as wires for wire installation, and two locations are used as materials and material unloading wires. The opening direction of the opening / closing type divided floor plate is preferably open toward the outside because the wires are arranged along the tower column, but may be opened toward the inside or in the circumferential direction. You may make it open toward the side. Also, it opens upward.

  The invention according to claim 2 of the present invention is the intermediate landing structure according to claim 1, comprising an inner frame member, an outer frame member, an inner frame member, and an outer frame member that constitute a support member that supports the floor board. A plurality of planar openings corresponding to the planar shape of the divided floor board are formed around the tower column by the connecting frame material to be connected, and one side of the divided floor board is formed on the outer frame material, the inner frame material or the connecting frame material of the opening. A steel pipe pillar tower for power transmission, characterized in that it is attached via a hinge member and is configured such that at least a peripheral portion of a side facing the side of the hinge member of the divided floor plate is locked to the frame member from above. It is an intermediate landing structure.

  As shown in FIG. 2 and FIG. 3, the inner frame member, the outer frame member, and the connecting frame member form a support frame for the openable and detachable divided floor plate, and the openable and foldable divided floor plate is opened upward. is there. A connecting member may be arranged between the ring-shaped inner frame material and the outer frame material with a space in the circumferential direction, or the ring-shaped inner frame material and the outer frame material may be arranged circumferentially as shown in the example. It may be divided in the direction, and the connecting frame members may be arranged on both sides of the arc-shaped inner frame member and the outer frame member, and individual support frames corresponding to the divided floor plates may be arranged. When the divided floor board opened upward is closed, the peripheral edge portion of the divided floor board is locked to the frame member, and the fall of the open / close-type divided floor board is prevented. The peripheral edge of the divided floor plate is fixed to the frame member with bolts. If a nut is fixed to the back surface of the frame member, the bolt can be tightened and loosened from above the divided floor plate.

  In the configuration as described above, when performing overhead wire construction or assembly work of the steel pipe pillar tower for power transmission, the divided floor plate is opened only in a range necessary for securing the path of the wire, and the wire or member is allowed to pass through the formed opening. It can be used as an intermediate landing just by closing the open divided floor board. This eliminates the need to remove and restore the intermediate landing as in the past.

  (1) In the case of overhead wire construction and assembly work of steel pipe pillar towers for power transmission, it is possible to secure the passage of wires and members by simply opening and closing the divided floor plate of the intermediate landing, and the conventional removal and restoration work of the intermediate landing is not possible. It becomes unnecessary.

  (2) By eliminating the need for removal and restoration of the intermediate landing, a) it is no longer necessary to install / remove the temporary work platform, and b) there is no up / down work between the tower and the ground associated with the removal / reconstruction of the intermediate landing. C) Since the risk of dropping tools and materials (particularly small items such as bolts) is reduced, it is possible to improve workability and safety and reduce costs.

  (3) A simple and low-cost structure consisting of divided floor boards and their supporting materials, etc., can provide an intermediate landing structure that has great effects in terms of construction, safety, and cost.

  Hereinafter, the present invention will be described based on the illustrated embodiments. FIG. 1 is a front view showing an example of a single-column steel pipe pillar for power transmission to which the intermediate landing structure of the present invention is applied. FIG. 2 is a plan view and a developed side view showing an example of the intermediate landing structure of the present invention. FIG. 3 is a partially enlarged plan view of FIG. 2 and a sectional view of each part.

  In FIG. 1, a plurality of armrests 3 are provided at an upper portion of a tower pillar 2 of a steel pipe pillar tower 1 for power transmission at intervals in the height direction. A ladder 4 reaching the top is provided, and an intermediate landing 10 of the present invention surrounding the outer periphery of the tower column 2 excluding the portion of the ladder 4 is installed below the lowermost arm 3.

  As shown in FIG. 2, the intermediate landing 10 includes a floor plate 11 that surrounds the outer periphery of the tower column 2 excluding the ladder 4, a support member 12 that supports the floor plate 11, and a handrail 13 provided on the outer periphery of the floor plate 11. It is configured. In the present invention, the floor board 11 is divided into a plurality in the circumferential direction of the tower column 2, and an arbitrary number of the divided floor boards 20 among the divided floor boards 20 are openable and closable. In this illustrated example, six surfaces of the divided floor plate 8 excluding both sides of the ladder 4 are open / close-type divided floor plates 20a, and two surfaces on the left and right sides of the ladder 4 are fixed-type divided floor plates 20b. The open / close-type divided floor plate 20a has a sector shape in plan view by equal division.

  The support material 12 includes an inner frame member 30 disposed near the periphery of the tower column 2, an outer frame member 31 disposed at a predetermined distance outside the inner frame member 30, and the inner frame member 30 and the outer side. A plurality of connecting frame members 32 are arranged between the frame member 31 at equal intervals in the circumferential direction and connect the inner frame member 30 and the outer frame member 31, and the inner frame member 30 and the outer frame member 31. The connecting frame member 32 is configured to form six planar fan-shaped openings 33 corresponding to the planar shape of the divided floor plate 20a by the number of the open / close-type divided floor plates 20a.

  In the illustrated example, the ring-shaped inner frame member 30 and the outer frame member 31 that are partially cut out are divided into six in the circumferential direction, and both end portions of the divided inner frame member 30 and outer frame member 31 are connected to each other. A fan-shaped support frame is formed by connecting the connecting frame members 32 (see FIGS. 2 and 3). A support bracket 12 is fixed to the tower column 2 by sandwiching a mounting bracket 34 between adjacent connecting frame members 32 and 32 and bolting the mounting bracket 34 to the outer surface of the tower column 2 (FIGS. 1 and 2). reference). In addition, although the case where the inner frame member 30 and the outer frame member 31 are divided is shown, the connecting frame member 32 may be arranged in a ring-shaped member partially cut away.

  The fixed divided floor plate 20b is formed by forming an outer frame with an inner frame member 30 ', an outer frame member 31', and a pair of connecting frame members 32 ', and providing a step plate 40 such as an expanded metal. (See FIG. 3).

  As shown in FIG. 3, the openable split floor plate 20 a is composed of a step plate 40 such as a fan-shaped expanded metal having a planar shape capable of closing the opening 33, and the periphery thereof is integrated with the step plate 40 or inside a separate body. A frame plate 40a, an outer frame plate 40b, and a pair of side frame plates 40c, 40c are provided. By attaching the outer frame plate 40b to the outer frame member 31 of the support member via the hinge member 50, the divided floor plate 20a is supported so as to be opened and closed in the vertical direction. The hinge member 50 is formed by joining mounting plates 50a and 50b vertically attached to the outer frame member 40b and the outer frame member 31, respectively, with bolts 50c and ordinary nuts 50d with split pins, and is arranged at two places on the left and right. The

  The inner frame plate 40a and the pair of side frame plates 40c, 40c are arranged so as to overlap the inner frame member 30 and the connecting frame members 32, 32 from above, respectively, and the support member 12 is also used as a tread plate receiver. To prevent it from falling. Further, when the tread plate 40 is closed, the inner frame plate 40 a can be fixed to the inner frame member 30 with bolts 51. A nut 52 is fixed to the back surface of the inner frame member 30 so that the bolt 51 can be tightened and loosened from above.

  Since there is a gap between the outer frame plate 40b and the outer frame member 31, the fall prevention plate 53 is bolted here. Moreover, the handrail 13 is arrange | positioned so that the floor board 11 may be surrounded on the outer side of the outer side frame material 31, as shown in FIG. 1, and it is fixed to the outer side frame material 31 via a mounting plate.

  In the intermediate landing 10 having the above-described configuration, when it is necessary to pass a wire or the like along the tower column 2 in the overhead wire work or the assembly work, the openable split floor board 20a is opened at a necessary location and the opening is opened. A wire or member is passed through 33. When the construction is completed, the divided floor board 20a is closed and fixed with bolts 51.

  In addition, although the above demonstrated the example which attaches an open / close-type division | segmentation floor board to an outer frame material with a hinge member, and opens upwards, it attaches to an inner frame material and a side frame material via a hinge member, and is not limited to this. Or you may make it open upward toward the side of the circumferential direction.

It is a front view which shows the example of the steel pipe pillar tower for power transmission of the single pillar type to which the intermediate landing structure of this invention is applied. It is the top view and expansion | deployment side view which show an example of the intermediate landing structure of this invention. FIG. 3 is a partially enlarged plan view of FIG. 2 and a cross-sectional view of each part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Steel pipe pillar tower 2 for transmission 2 ... Tower pillar 3 ... Arm metal 4 ... Ladder 10 ... Intermediate landing 11 ... Floor board 12 ... Supporting material 13 ... Handrail 20 ... Divided floor board 20a ... Open / close-type divided floor board 20b ... Fixed division floor board DESCRIPTION OF SYMBOLS 30 ... Inner frame material 31 ... Outer frame material 32 ... Connection frame material 33 ... Opening 34 ... Mounting bracket 40 ... Tread plate 40a ... Inner frame plate 40b ... Outer frame plate 40c ... Side frame plate 50 ... Hinge member 50a ... Mounting plate 50b ... Mounting plate 50c ... Bolt 50d ... Nut 51 ... Bolt 52 ... Nut 53 ... Fall prevention plate

Claims (2)

  This is an intermediate landing structure provided on the tower pillars of steel pipe pillars for power transmission, and the floorboards surrounding the tower pillars are divided into multiple pieces in the circumferential direction of the tower pillars. An intermediate landing structure of a steel pipe pillar tower for power transmission, characterized in that it can be opened and closed in the direction. The intermediate landing structure according to claim 1, wherein the divided floor board is constituted by an inner frame member, an outer frame member, and a connecting frame member that connects the inner frame member and the outer frame member, which constitute a support member that supports the floor plate. A plurality of planar openings corresponding to the planar shape are formed around the tower column, and one side of the divided floor plate is attached to the outer frame member, inner frame member or connecting frame member of the opening via a hinge member, and at least the divided floor plate An intermediate landing structure for a steel pipe pillar tower for power transmission, characterized in that a peripheral portion of a side facing a side of the hinge member of the steel is configured to be locked to the frame member from above.

Images