JP2016089601A - Apparatus for installing suspended scaffold and curing net used in painting work of communications steel tower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for installing a suspended scaffold and a curing net that are used in painting work of a communications steel tower and can be easily installed and removed.SOLUTION: An apparatus for installing a suspended scaffold and a curing net that are disposed in an antenna support of a communications steel tower having an upper support and a lower support comprises: a plurality of suspended scaffold frames each comprising an upper horizontal member disposed on upper surfaces of components constituting the upper support, a pair of vertical members connected to vicinities of both ends of the upper horizontal member, and a lower horizontal member disposed to mutually connect ends of the pair of vertical members not connected to the upper horizontal member; upper connection components connecting the plurality of suspended scaffold frames near the connections between the upper horizontal members and the vertical members; lower connection components connecting the plurality of suspended scaffold frames near the connections between the vertical members and the lower horizontal members; floor members disposed via the lower connection components; and an apparatus for disposing a substantially cylindrical curing net around the communications steel tower.SELECTED DRAWING: Figure 5

Description

  TECHNICAL FIELD The present invention relates to an apparatus for installing a work scaffold on which an operator rides and a curing net for preventing splashes of kelen debris and paint from splashing in the vicinity in the painting work of a communication tower.

  Generally, a communication tower includes a tower main body that is erected along the vertical direction from the ground or the roof of a building, and an antenna support that protrudes laterally from the tower main body. The structure of the steel tower body includes a truss structure, a ramen structure, or a single pillar structure.

  The truss structure steel tower main body is arranged along the vertical direction and extends to the upper end of the steel tower main body, a plurality of main pillar materials arranged in the horizontal direction and connecting the main pillar materials to each other, and the main pillar And a plurality of diagonal members arranged so as to be inclined.

  The tower body of the ramen structure includes a plurality of main pillar members that are arranged along the vertical direction and extend to the upper end of the tower main body, and a plurality of horizontal members that are arranged in the lateral direction and connect the main pillar members to each other. Yes.

  The steel tower body having a single pillar structure is formed by connecting a plurality of cylindrical steel pipes having flange portions at both ends, and the steel pipes arranged along the longitudinal direction are joined to each other by bolts and nuts. .

  As the structure of the antenna support portion, an arm system as shown in FIGS. 1 and 2 and a ring system as shown in FIGS. 3 and 4 are generally adopted. In addition, in the structural example of the antenna support part of FIGS. 1 to 4, the steel tower body has a single pillar structure, but even when the steel tower body has a truss structure and a ramen structure, the structure of the antenna support part is an arm. A method or a ring method is adopted.

  As shown in FIG. 1, the arm-type antenna support part 120 is composed of an upper support part 121 and a lower support part 122 for standingly fixing a plurality of antenna support pillars 102 to the upper part of the tower main body 110. ing. As shown in FIG. 2, the upper support portion 121 and the lower support portion 122 project a pair of arm metal main members 123, 123 made of H-shaped steel, angle steel, or channel steel from the tower body 110 in the lateral direction. A pair of arm metal main members 123, 123 are connected to the arm fixing member 124 fixed to the outer periphery of the steel pipe 111 constituting the tower main body 110 with bolts and nuts, A support post mounting bracket 125 is attached to the distal end portion of the brace main material 123, 123. Further, the antenna support pillar 102 is erected and fixed via the support pillar mounting bracket 125. Although not shown, a communication antenna is installed on the antenna support pillar 102.

  As shown in FIG. 3, the ring-type antenna support part 130 includes an upper support part 131 and a lower support part 132 for standing and fixing a plurality of antenna support pillars 102 on the top of the tower main body 110. ing. As shown in FIG. 4, the upper support portion 131 and the lower support portion 132 are arranged such that connecting members 133 made of H-shaped steel, angle steel, or grooved steel are arranged radially on the outer periphery of the tower main body 110, 110 is fixed to a ring fixing member 134 fixed to the outer periphery of the steel pipe 111 constituting the 110 with bolts and nuts, and the connecting member 133 is connected to a ring member 135 having a circular end. A support column mounting bracket 136 is attached to the ring members 135 of the upper support portion 131 and the lower support portion 132, and the antenna support column 102 is erected and fixed via the support column mounting bracket 136. . Although not shown, a communication antenna is installed on the antenna support pillar 102.

  The surface of the components of the communication tower is subjected to surface treatments such as hot dip galvanizing and painting for rust prevention and harmony with the surrounding environment, but these surface treatments deteriorate over time. Regular repairs are applied. In the construction work of the communication tower, the paint work is carried out in a state where the communication tower is surrounded by a curing net in order to prevent scattering of keren waste and paint from the surrounding area. As a method of installing a curing net around a communication tower, conventionally, an assembly scaffold made of steel pipes, etc. is assembled around the communication tower from the ground or from the roof of the building, and the curing net is attached to the assembly scaffold using metal fittings and strings. The method of attaching was taken.

  In conventional assembly scaffolds, assembling scaffolds made of steel pipes or the like are assembled from the ground or the roof of a building, so many members such as steel pipes are required, and it takes time to carry in the assembly of the members, assembly of the assembly scaffolds, and dismantling. there were. In addition, since the curing net is attached to the assembly scaffold using metal fittings and strings, there is a problem that it takes time to attach and remove the curing net.

  Therefore, a method using a suspended scaffold is adopted instead of an assembly scaffold assembled from the ground or the roof of a building. For example, in a truss structure steel tower with an antenna support, an opening having a size that allows the base of the steel tower to enter the center of the plate-like body, and a scaffold on which an operator can walk on the plate-like body is provided. Means for installing the scaffold with the base of the steel tower placed in the opening in the center, supporting the scaffold on three or more linear bodies suspended from the antenna support, and rolling up or feeding the linear body The scaffold can be raised and lowered by changing the lengths of these linear bodies, and a substantially cylindrical curing net of a size that substantially surrounds the steel tower from the outer peripheral edge or the lower surface of the scaffold is attached to the steel tower. There has been proposed a method of hanging along (see, for example, Patent Document 1).

Utility Model Registration No. 3122935

  However, in the case of a conventional suspension scaffold where the antenna support is adopted in a ring-type truss structure steel tower, a lifting device such as a large winch or wire is required to raise and lower the suspension scaffold itself, and the curing net is also raised and lowered. Since lifting equipment such as a winch and a wire is also required, the lifting equipment is large and complicated, and there is a problem that it takes time to install and dismantle the suspension scaffold.

  In addition, the conventional suspension scaffold in which the antenna support is adopted in the ring-type truss structure steel tower is assembled at the lower part of the tower main body, and is installed by raising it to a position just below the antenna support by the lifting equipment. Therefore, in the case of a truss structure steel tower or a ramen structure steel tower where the tower width is wider at the lower part than the upper part of the steel tower body, the suspension scaffold needs to be wider than the lower tower width. Therefore, since the area of the suspension scaffold is increased, the number of members constituting the suspension scaffold is increased, and the size of the member is also increased. Therefore, there is a problem that it takes time to install and disassemble the suspension scaffold.

  In addition, when the conventional suspension scaffolding used for the ring-type truss structure steel tower is applied to a communication tower with multiple stages of arm-type or ring-type antenna support parts, the suspension scaffold is Because it is assembled at the lower part of the tower body and raised by the lifting equipment to a position just below the lower antenna support part, unless the lower antenna support part is disassembled and removed, the lower antenna support part There was a problem that a suspension scaffold could not be installed above.

  Therefore, an object of the present invention is to provide a structure that is directly installed on the antenna support part of the communication tower without raising and lowering the suspension scaffold, thereby eliminating the need for lifting equipment for raising and lowering the suspension scaffold. It is to provide a suspension scaffold that can be easily disassembled.

  In addition, even in a communication tower in which a plurality of stages of arm type or ring type antenna support parts are installed, it is possible to install the antenna support part above the lower antenna support part without disassembling and removing the lower antenna support part. It is to provide a suspension scaffold that can be used.

  Moreover, when using the suspension scaffold of this invention, it is providing the installation apparatus of the curing net which can install the curing net installed around a communication tower at arbitrary height easily.

  In order to solve the above problems, the suspension scaffold and curing net installation device used in the communication tower painting work of the present invention includes an upper support section for standingly fixing a plurality of antenna support pillars to the communication tower. An apparatus for installing a suspension scaffold and a curing net installed on an antenna support unit having a lower support unit, installed on the upper surface of a member constituting the upper support unit of the antenna support unit, both ends from the upper support unit An upper horizontal member formed in a length protruding in the horizontal direction and connected to the vicinity of both ends of the upper horizontal member, arranged in a vertical direction with respect to the upper horizontal member, and connected to the upper horizontal member. A pair of vertical members formed with a length that protrudes downward from the lower support portion of the antenna support portion, and an end portion of the pair of vertical members not connected to the upper horizontal member To connect each other A plurality of suspension scaffold frames having a lower horizontal member placed thereon, and an upper connection member that connects the plurality of suspension scaffold frames in the vicinity of the connection portion between the upper horizontal member and the vertical member of each suspension scaffold frame, A lower connecting member for connecting the plurality of suspension scaffolding frames in the vicinity of the connecting portion between the vertical member and the lower horizontal member of each suspension scaffolding frame, a floor member installed via the lower connecting member, and a substantially cylinder It is characterized by being comprised with the apparatus which installs a shaped curing net | network around the communication tower.

  Moreover, the apparatus which installs a substantially cylindrical curing net around a communication tower is a substantially cylindrical curing net installed around a communication tower and the upper surface of a member constituting the upper support part of the antenna support part. Near the base of the telecommunication tower and the horizontal material for the curing net, both ends of which are protruded horizontally from the upper support, the pulleys installed at both ends of the horizontal material for the curing net A winch to be installed, and a wire is fixed to the upper end of the curing net, and the wire is wound around the winch via pulleys installed at both ends of the horizontal material for the curing net. In addition, the curing net is provided so as to be movable up and down along the communication tower by pulling out or winding the wire with a winch.

  According to the suspension scaffold and curing net installation apparatus used for the communication tower painting work of the present invention, the suspension scaffold assembled at the lower part of the communication tower in order to install the suspension scaffold directly on the antenna support portion of the communication tower. There is no need to raise the cable to the position directly below the antenna support, and there is no need for lifting equipment such as a large winch or wire to raise or lower the suspension scaffold itself, and raising or lowering a winch or wire to raise or lower the curing net. Since there is only equipment, the lifting equipment does not become large, and it is easy to install and disassemble the suspension scaffold without any trouble.

  In addition, the suspension scaffold assembled at the lower part of the communication tower is not set up to a position just below the antenna support part, but is installed directly on the antenna support part of the communication tower. Since there is no need to make the width of the scaffold wider than the tower width at the bottom of the communication tower, the number of members constituting the suspension scaffold does not increase and the size of the members does not increase. It can be done easily without much trouble.

  In addition, since the suspension scaffold is installed directly on the antenna support section of the communication tower, even in a communication tower where multiple stages of arm or ring antenna support sections are installed, the antenna support section is not disassembled and removed. The suspension scaffold can be installed on the antenna support part above the lower antenna support part.

  Further, a wire is fixed to the upper end of the curing net, and the wire is wound around the winch via pulleys installed at both ends of the horizontal material for the curing net, and the wire is pulled out or wound by the winch. Thus, since the curing net is provided so as to move up and down along the communication tower, the curing net can be easily installed at an arbitrary height with respect to the communication tower.

  In addition, the curing net is not suspended from the outer periphery or bottom surface of the suspension scaffold, but is suspended from the horizontal material for the curing net attached to the antenna support of the communication tower. It is not necessary to set the width of the suspension scaffold together, and the length of the horizontal material for the curing net may be set according to the outer diameter of the curing net. Therefore, since there is no need to increase the width of the suspension scaffold according to the outer diameter of the curing net, the number of members constituting the suspension scaffold does not increase and the member size does not increase. And can be easily done without the hassle of dismantling.

It is a front view which shows an example of the arm-type antenna support part of a single pillar structure steel tower. It is a top view which shows an example of the arm type antenna support part of a single pillar structure steel tower. It is a front view which shows an example of the ring-type antenna support part of a single pillar structure steel tower. It is a top view which shows an example of the ring-type antenna support part of a single pillar structure steel tower. It is a front view which shows an example of the suspension scaffold with which the antenna support part was installed in the arm-type single pillar structure steel tower. It is a top view which shows an example of the suspension scaffold with which the antenna support part was installed in the arm type single pillar structure steel tower. It is a front view of the frame for suspension scaffolds seen from the BB line of FIG. It is a top view of the suspension scaffold seen from the AA line of FIG. It is a top view which shows the installation state of the flooring to the suspension scaffold plane of FIG. It is a perspective view of a flooring. It is a top view which shows an example of the apparatus which installs a substantially cylindrical curing net in the circumference | surroundings of the single pillar structure steel tower whose antenna support part is an arm system. It is a front view of the horizontal material for a curing net seen from CC line of FIG. It is a front view which shows the installation state of the curing net seen from the CC line of FIG. It is a front view which shows the installation state of the curing net seen from the DD line | wire of FIG. It is a front view which shows an example of the suspension scaffold with which the antenna support part was installed in the ring-type single pillar structure steel tower. It is a top view which shows an example of the suspension scaffold with which the antenna support part was installed in the ring-type single pillar structure steel tower. It is a front view of the frame for suspension scaffolds seen from the FF line of FIG. It is a top view of the suspension scaffold seen from the EE line | wire of FIG. It is a top view which shows the installation state of the flooring to the suspension scaffold plane of FIG. It is a top view which shows an example of the apparatus which installs a substantially cylindrical curing net in the circumference | surroundings of a single pillar structure steel tower whose antenna support part is a ring system. It is a front view of the horizontal material for a curing net seen from the GG line of FIG. It is a front view which shows the installation state of the curing net seen from the GG line of FIG. It is a front view which shows the installation state of the curing net seen from the HH line | wire of FIG. It is a front view which shows the installation state of the suspension scaffold to the truss structure steel tower in which the ring type antenna support part is installed in two steps, and a curing net.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  Generally, a communication tower includes a tower main body that is erected along the vertical direction from the ground or the roof of a building, and an antenna support that protrudes laterally from the tower main body. The structure of the steel tower body includes a truss structure, a ramen structure, or a single pillar structure.

  As the structure of the antenna support portion, an arm method and a ring method are generally employed. As an example of the structure of the antenna support portion, FIG. 1 is a front view showing an example of an arm-type antenna support portion of a single-column tower, FIG. 2 is a top view showing an example of an arm-type antenna support portion of a single-column structure tower, FIG. 3 is a front view showing an example of a ring-type antenna support part of a single-column structure tower, and FIG. 4 is a top view showing an example of a ring-type antenna support part of a single-column structure tower. In the example of the structure of the antenna support portion of FIGS. 1 to 4, the tower body has a single pillar structure, but the structure of the antenna support section is a ring even when the tower body has a truss structure and a ramen structure. The system or the arm system is adopted.

  First, the arm-type antenna support portion of the single-column tower shown in FIGS. 1 and 2 will be described. The single-pillar structure tower 100 includes a tower main body 110 that is erected along the vertical direction from the ground or the roof of the building, and an antenna support 120 that protrudes laterally from the tower main body 110. The steel tower body 110 is formed by connecting a plurality of cylindrical steel pipes 111 having flange portions 112 at both ends, and the steel pipes 111 arranged along the longitudinal direction are joined to each other with the flange portions 112 and 112 by bolts and nuts. ing.

  As shown in FIG. 1, the arm-type antenna support part 120 is composed of an upper support part 121 and a lower support part 122 for standingly fixing a plurality of antenna support pillars 102 to the upper part of the tower main body 110. ing. As shown in FIG. 2, the upper support portion 121 and the lower support portion 122 project a pair of arm metal main members 123, 123 made of H-shaped steel, angle steel, or channel steel from the tower body 110 in the lateral direction. A pair of arm metal main members 123, 123 are connected to the arm fixing member 124 fixed to the outer periphery of the steel pipe 111 constituting the tower main body 110 with bolts and nuts, A support post mounting bracket 125 is attached to the distal end portion of the brace main material 123, 123. 2 shows the structure of the upper support 121, the lower support 122 has the same structure as the upper support 121. FIG.

  Further, the antenna support column 102 is erected and fixed through the support column mounting bracket 125 of the upper support portion 121 and the support column mounting bracket 125 of the lower support portion 122. Although not shown, a communication antenna is installed on the antenna support pillar 102.

  Next, the ring-type antenna support portion of the single pillar structure tower shown in FIGS. 3 and 4 will be described. As shown in FIG. 3, the ring-type antenna support part 130 includes an upper support part 131 and a lower support part 132 for standing and fixing a plurality of antenna support pillars 102 on the top of the tower main body 110. ing. As shown in FIG. 4, the upper support portion 131 and the lower support portion 132 are arranged such that connecting members 133 made of H-shaped steel, angle steel, or grooved steel are arranged radially on the outer periphery of the tower main body 110, 110 is fixed to a ring fixing member 134 fixed to the outer periphery of the steel pipe 111 constituting the 110 with bolts and nuts, and the connecting member 133 is connected to a ring member 135 having a circular end. 4 shows the structure of the upper support portion 131, the lower support portion 132 has the same structure as the upper support portion 131.

  A support column mounting bracket 136 is mounted on the ring member 135 of the upper support portion 131 and the lower support portion 132, and the support column mounting bracket 136 and the lower support portion 132 of the upper support portion 131 are supported. The antenna support column 102 is erected and fixed via the column mounting bracket 136. Although not shown, a communication antenna is installed on the antenna support pillar 102.

  The suspension scaffold and curing net installation device used for the painting work of the communication tower of the present invention will be described. First, the case where the above-mentioned antenna support unit 120 installs the suspension scaffold and the curing net installation device of the present invention on the arm-type single pillar structure tower 100 will be described. FIG. 5 is a front view showing an example of a suspension scaffold in which an antenna support unit is installed on an arm-type single-column tower. FIG. 6 is an example of a suspension scaffold in which an antenna support unit is installed on an arm-type single-column tower. FIG. 7 is a front view of the suspension scaffold frame seen from the line BB in FIG. 6, FIG. 8 is a plan view of the suspension scaffold seen from the line AA in FIG. 5, and FIG. FIG. 10 is a perspective view of the flooring, and FIG. 10 is a plan view showing the installation state of the flooring on the suspended scaffold plane.

  The suspension scaffold 1 and the curing net installation device of the present invention include a plurality of suspension scaffold frames 2, an upper connection member 3 that connects the plurality of suspension scaffold frames 2, and a lower side that connects the plurality of suspension scaffold frames 2. The connecting member 4, the floor material 5 installed via the lower connecting member 4, and a device 7 for installing a substantially cylindrical curing net 6 around the communication tower.

  The suspension scaffold frame 2 includes an upper horizontal member 8, a vertical member 9, and a lower horizontal member 10. The upper horizontal member 8 is arranged on a top surface of a member constituting the upper support 121 of the antenna support 120 in a direction perpendicular to the direction in which the antenna support 120 protrudes from the tower main body 110, and is fixed with a V bolt or the like. It is fixed to the pair of arm metal main members 123 using the tool 11. In addition, the upper horizontal member 8 is formed to have such a length that both ends protrude from the upper support portion 121 in the horizontal direction.

  The vertical member 9 is disposed in the vertical direction with respect to the upper horizontal member 8, with one end connected to both ends of the upper horizontal member 8 by bolts and nuts. Further, the vertical member 9 is formed in such a length that the end portion on the side not connected to the upper horizontal member 8 projects downward from the lower support portion 122 of the antenna support portion 120.

  Further, the vertical member 9 is provided with an upper connecting member 12 for connection with the upper connecting member 3 in the vicinity of the end connected to the upper horizontal member 8, and the upper horizontal member 9. A connection tool 13 for a lower connection member for connecting to the lower connection member 4 is provided in the vicinity of the end on the side not connected to 8. Further, the vertical member 9 is provided with one or more connecting members 14 for the handrail material for connecting the handrail material 15 as necessary. U-bolts and clamps are used for the upper connection member 12, the lower connection member 13, and the handrail connection 14.

  The lower horizontal member 10 is disposed so as to connect ends of the pair of vertical members 9 connected to both ends of the upper horizontal member 8 and not connected to the upper horizontal member 8, and U bolts. It is fixed to the vertical member 9 using a connecting member 16 for the lower horizontal member such as a clamp.

  In the suspension scaffold frame 2, two or more suspension scaffold frames 2 are installed at a predetermined interval on one antenna support portion 120. In the example of the suspension scaffold 1 in which the antenna support 120 shown in FIGS. 5 to 9 is installed on the arm-type single-pillar structure tower 100, two suspension scaffold frames 2 are installed on one antenna support 120, The state which installed the two suspension scaffold frames 2 in the other antenna support part 120 is shown.

  The upper connection member 3 connects the plurality of suspension scaffold frames 2, 2,... To the vertical members 9, 9,. It installs via the connection tool 12 for provided upper side connection members. The length of the upper connection member 3 is longer than the distance between the support pillar mounting brackets 125, 125 of the two antenna support portions 120, 120 (left and right antenna support portions in FIG. 6).

  The lower connection member 4 connects a plurality of suspension scaffold frames 2, 2,... So that the vertical members 9, 9,. It installs via the connection tool 13 for the lower side connection members provided in this. The length of the lower connecting member 4 is longer than the distance between the support pillar mounting brackets 125, 125 of the two antenna support portions 120, 120 (left and right antenna support portions in FIG. 6). The same length as 3 is formed.

  As shown in FIG. 10, the flooring 5 is arranged in parallel with a horizontal flooring 18 with a predetermined interval, and both ends of the horizontal flooring 18 are connected by a horizontal flooring 19 for flooring. In addition, a steel plate 21 such as expanded metal or punching metal is stretched in a range surrounded by the horizontal material 18 for flooring and the horizontal member 19 for flooring. In addition, two or more locking hooks 20 are attached to the floor material 19 for the flooring, and one vertical member 9 of the suspension scaffold frame 2 is connected to the flooring horizontal member 19 via the locking hooks 20. The floor material 5 is laid between the lower connection members 4 by spanning the floor material 5 between the connected lower connection member 4 and the lower connection member 4 connected to the other vertical member 9. Is done.

  A handrail material 15 is installed on the suspension scaffold 1 as necessary. The handrail material 15 includes a first handrail material 15a attached to the vertical member 9 of the suspension scaffold frame 2, a second handrail material 15b attached to the upper connection member 3, and a third handrail attached to the first handrail material 15a. There are a material 15c and a fourth handrail material 15d attached to the lower connection member 4. The first handrail material 15a is for a plurality of suspension scaffolds via handrail material connectors 14 provided on the vertical members 9, 9,... Of the plurality of suspension scaffold frames 2, 2,. It is installed so as to connect the frames 2, 2,. Further, the length of the first handrail material 15a is longer than the distance between the support pillar mounting brackets 125, 125 of the two antenna support portions 120, 120 (left and right antenna support portions in FIG. 6), and the upper connection member 3 And the same length as the lower connecting member 4. The second handrail material 15b includes an end portion of the upper connection member 3 connected to one vertical member 9 of the suspension scaffold frame 2 and an end portion of the upper connection member 3 connected to the other vertical member 9. And installed so as to connect. Note that a connection tool 17 such as a universal clamp is used to connect the upper connection member 3 and the second handrail material 15b. The third handrail material 15c includes an end portion of the first handrail material 15a connected to one vertical member 9 of the suspension scaffold frame 2 and a first handrail material 15a connected to the other vertical member 9. It is installed so as to connect the end. Note that a connection tool 17 such as a free clamp is used to connect the first handrail material 15a and the third handrail material 15c. The fourth handrail material 15d includes the end of the lower connection member 4 connected to one vertical member 9 of the suspension scaffold frame 2 and the lower connection member 4 connected to the other vertical member 9. It is installed so as to connect the end. A connecting tool 17 such as a universal clamp is used to connect the lower connecting member 4 and the fourth handrail material 15d.

  The apparatus 7 for installing the substantially cylindrical curing net 6 around the communication tower comprises the substantially cylindrical curing net 6 installed around the communication tower and the upper support part 121 of the antenna support part 120. The horizontal member 22 for the curing net installed on the upper surface of the member to be cured, the pulley 23 installed at both ends of the horizontal member 22 for the curing net, and the winch 26 installed near the base of the communication tower. . FIG. 11 is a top view showing an example of a device 7 for installing the substantially cylindrical curing net 6 around the single-pillar structure tower 100 with the antenna support 120 being an arm system, and FIG. 12 is a view taken along the line CC in FIG. FIG. 13 is a front view showing the installation state of the curing net 6 as viewed from the line CC in FIG. 11, and FIG. 14 is a curing net as viewed from the line DD in FIG. 6 is a front view showing an installation state of FIG.

  The horizontal material 22 for the curing net is disposed on the upper surface of a member constituting the upper support portion 121 of the antenna support portion 120 in a direction perpendicular to the direction in which the antenna support portion 120 protrudes from the tower main body 110, and is a V bolt or the like. Are fixed to a pair of arm metal main members 123 using the fixing tool 11. The length of the horizontal net 22 for the curing net is such that both ends protrude in the horizontal direction from the upper support portion 121 and is formed according to the outer diameter of the curing net 6 hanging from the horizontal net 22 for the curing net. Has been. In addition, pulleys 23 are installed on both ends of the curing net horizontal member 22 via pulley connectors 25.

  The curing net 6 is formed in a substantially cylindrical shape, and is formed in such a size that the outer periphery of the communication tower can be covered and a painting operation can be performed in the curing net 6. The curing net 6 has a wire 24 fixed to its upper end, and the wire 24 is installed near the base of the communication tower via pulleys 23 installed at both ends of the horizontal material 22 for the curing net. It is wound around the winch 26. Thereby, the curing net 6 is installed so as to be movable up and down along the communication tower by pulling out or winding the wire 24 by the winch 26.

  In order to install the substantially cylindrical curing net 6 around the communication tower, the wire 24 is wound up by the winch 26, and the upper end of the curing net 6 is raised upward from the lower part of the communication tower. By raising the net 6 to a position just below the suspension scaffold 1, the curing net 6 is suspended along the communication tower.

  When painting the tower main body 110 of the communication tower, as shown in FIG. 14, members constituting the lower support part 122 of the antenna support part 120 in the curing net 6 installed around the communication tower. The work wire 28 suspended from the work is suspended along the communication tower, a chair-type gondola 27 is fixed to the work wire 28, and the chair-type gondola 27 is lifted and lowered by the work wire 28. . A chair harness may be used instead of the chair type gondola 27.

  Next, the case where the antenna support 130 installs the suspension scaffold and the curing net installation device of the present invention on the ring-type single pillar structure tower 100 will be described. FIG. 15 is a front view showing an example of a suspended scaffolding in which an antenna support unit is installed on a ring-type single-column tower. FIG. 16 is an example of a suspended scaffolding in which an antenna support unit is installed on a ring-type single-column tower. FIG. 17 is a front view of the suspension scaffold frame seen from the line FF in FIG. 16, FIG. 18 is a plan view of the suspension scaffold seen from the line EE in FIG. 15, and FIG. It is a top view which shows the installation state of the flooring to a suspended scaffold plane.

  The suspension scaffold 1 and the curing net installation device in which the antenna support unit 130 is installed in the ring-type single pillar structure tower 100 are similar to the suspension scaffold 1 and the curing net installation device installed in the arm type antenna support unit 120. Via a plurality of suspension scaffold frames 2, an upper connection member 3 that connects the plurality of suspension scaffold frames 2, a lower connection member 4 that connects the plurality of suspension scaffold frames 2, and a lower connection member 4 The flooring material 5 to be installed and the apparatus 7 for installing a substantially cylindrical curing net 6 around the communication tower.

  The suspension scaffold frame 2 includes an upper horizontal member 8, a vertical member 9, and a lower horizontal member 10. The upper horizontal member 8 is disposed on the upper surface of a member constituting the upper support portion 131 of the antenna support portion 130, and is fixed to the connection member 133 or the ring member 135 using a fixture 11 such as a V bolt. The upper horizontal member 8 is longer than the outer diameter of the antenna support part 130 and has a length that protrudes from the upper support part 131 in the horizontal direction at both ends.

  The vertical member 9 is disposed in the vertical direction with respect to the upper horizontal member 8, with one end connected to both ends of the upper horizontal member 8 by bolts and nuts. Further, the vertical member 9 is formed in such a length that the end portion on the side not connected to the upper horizontal member 8 protrudes downward from the lower support portion 132 of the antenna support portion 130.

  Further, the vertical member 9 is provided with an upper connecting member 12 for connection with the upper connecting member 3 in the vicinity of the end connected to the upper horizontal member 8, and the upper horizontal member 9. A connection tool 13 for a lower connection member for connecting to the lower connection member 4 is provided in the vicinity of the end on the side not connected to 8. Further, the vertical member 9 is provided with one or more connecting members 14 for the handrail material for connecting the handrail material 15 as necessary. U-bolts and clamps are used for the upper connection member 12, the lower connection member 13, and the handrail connection 14.

  The lower horizontal member 10 is disposed so as to connect ends of the pair of vertical members 9 connected to both ends of the upper horizontal member 8 and not connected to the upper horizontal member 8, and U bolts. It is fixed to the vertical member 9 using a connecting member 16 for the lower horizontal member such as a clamp.

  In the suspension scaffold frame 2, two or more suspension scaffold frames 2 are installed at a predetermined interval on one antenna support portion. In addition, in the example of the suspension scaffold 1 in which the antenna support portion 130 illustrated in FIGS. 15 to 19 is installed in the ring-type single-pillar structure tower 100, a state in which four suspension scaffold frames 2 are installed in the antenna support portion 130 is illustrated. ing.

  The upper connection member 3 connects the plurality of suspension scaffold frames 2, 2,... To the vertical members 9, 9,. It installs via the connection tool 12 for provided upper side connection members. Further, the length of the upper connecting member 3 is longer than the outer diameter of the antenna support portion 130.

  The lower connection member 4 connects a plurality of suspension scaffold frames 2, 2,... So that the vertical members 9, 9,. It installs via the connection tool 13 for the lower side connection members provided in this. Further, the length of the lower connecting member 4 is longer than the outer diameter of the antenna support portion 130 and is formed to the same length as the upper connecting member 3.

  A handrail material 15 is installed on the suspension scaffold 1 as necessary. The handrail material 15 includes a first handrail material 15a attached to the vertical member 9 of the suspension scaffold frame 2, a second handrail material 15b attached to the upper connection member 3, and a third handrail attached to the first handrail material 15a. There are a material 15c and a fourth handrail material 15d attached to the lower connection member 4. The first handrail material 15a is for a plurality of suspension scaffolds via handrail material connectors 14 provided on the vertical members 9, 9,... Of the plurality of suspension scaffold frames 2, 2,. It is installed so as to connect the frames 2, 2,. Further, the length of the first handrail material 15 a is longer than the outer diameter of the antenna support portion 130, and is formed to have the same length as the upper connection member 3 and the lower connection member 4. The second handrail material 15b includes an end portion of the upper connection member 3 connected to one vertical member 9 of the suspension scaffold frame 2 and an end portion of the upper connection member 3 connected to the other vertical member 9. And installed so as to connect. Note that a connection tool 17 such as a universal clamp is used to connect the upper connection member 3 and the second handrail material 15b. The third handrail material 15c includes an end portion of the first handrail material 15a connected to one vertical member 9 of the suspension scaffold frame 2 and a first handrail material 15a connected to the other vertical member 9. It is installed so as to connect the end. Note that a connection tool 17 such as a free clamp is used to connect the first handrail material 15a and the third handrail material 15c. The fourth handrail material 15d includes the end of the lower connection member 4 connected to one vertical member 9 of the suspension scaffold frame 2 and the lower connection member 4 connected to the other vertical member 9. It is installed so as to connect the end. A connecting tool 17 such as a universal clamp is used to connect the lower connecting member 4 and the fourth handrail material 15d.

  Further, the vicinity of the center portion of the fourth handrail material 15d connected to one end portion of the lower connection member 4 and the vicinity of the center portion of the fourth handrail material 15d connected to the other end portion are connected. In this manner, a plurality of floor material installation members 29 are installed. The floor material installation member 29 is connected to the lower horizontal material 10 of the plurality of suspension scaffold frames 2, 2. Note that a connecting tool 17 such as a universal clamp is used for connection between the floor material installation member 29 and the fourth handrail material 15d and connection between the floor material installation member 29 and the lower horizontal material 10.

  As shown in FIG. 10, the flooring 5 is arranged in parallel with a horizontal flooring 18 with a predetermined interval, and both ends of the horizontal flooring 18 are connected by a horizontal flooring 19 for flooring. In addition, a steel plate 21 such as expanded metal or punching metal is stretched in a range surrounded by the horizontal material 18 for flooring and the horizontal member 19 for flooring. Further, two or more locking hooks 20 are attached to the floor material 19 for the flooring, and connected to the vertical member 9 of the suspension scaffold frame 2 via the locking hooks 20. The floor material 5 is laid between the lower connection members 4 by passing the floor material 5 between the lower connection member 4 and the floor material installation member 29.

  The apparatus 7 for installing the substantially cylindrical curing net 6 around the communication tower includes the substantially cylindrical curing net 6 installed around the communication tower and the upper support part 131 of the antenna support part 130. The horizontal member 22 for the curing net installed on the upper surface of the member to be cured, the pulley 23 installed at both ends of the horizontal member 22 for the curing net, and the winch 26 installed near the base of the communication tower. . 20 is a top view showing an example of a device 7 for installing the substantially cylindrical curing net 6 around the single pillar structure tower 100 in which the antenna support 130 is a ring system, and FIG. 21 is a view taken along line GG in FIG. 22 is a front view of the horizontal material 22 for the curing net, FIG. 22 is a front view showing the installation state of the curing net 6 as seen from the GG line in FIG. 20, and FIG. 23 is a curing net as seen from the HH line in FIG. 6 is a front view showing an installation state of FIG.

  The horizontal member 22 for the curing net is disposed on the upper surface of a member constituting the upper support portion 131 of the antenna support portion 130, and is fixed to the connection member 133 or the ring member 135 using a fixture 11 such as a V bolt. . The length of the horizontal material 22 for the curing net is a length in which both ends protrude in the horizontal direction from the upper support portion 131 and is formed according to the outer diameter of the curing net 6 hanging from the horizontal material 22 for the curing net. Has been. In addition, pulleys 23 are installed on both ends of the horizontal member 22 for the curing net via pulley connector 25.

  The curing net 6 is formed in a substantially cylindrical shape, and is formed in such a size that the outer periphery of the communication tower can be covered and a painting operation can be performed in the curing net 6. The curing net 6 has a wire 24 fixed to its upper end, and the wire 24 is installed near the base of the communication tower via pulleys 23 installed at both ends of the horizontal material 22 for the curing net. It is wound around the winch 26. Thereby, the curing net 6 is installed so as to be movable up and down along the communication tower by pulling out or winding the wire 24 by the winch 26.

  In order to install the substantially cylindrical curing net 6 around the communication tower, the wire 24 is wound up by the winch 26, and the upper end of the curing net 6 is raised upward from the lower part of the communication tower. By raising the net 6 to a position just below the suspension scaffold 1, the curing net 6 is suspended along the communication tower.

  When painting the tower body 110 of the communication tower, as shown in FIG. 23, members constituting the lower support part 132 of the antenna support part 130 in the curing net 6 installed around the communication tower. The work wire 28 suspended from the work is suspended along the communication tower, a chair-type gondola 27 is fixed to the work wire 28, and the chair-type gondola 27 is lifted and lowered by the work wire 28. . A chair harness may be used instead of the chair type gondola 27.

  With the above configuration, the suspension scaffold 1 and the curing net installation device used for the communication tower painting work of the present invention directly install the suspension scaffold 1 on the antenna support portions 120 and 130 of the communication tower. It is not necessary to raise the suspension scaffold 1 assembled at the lower part to a position immediately below the antenna support portions 120 and 130, and lifting equipment such as a large winch or wire for raising and lowering the suspension scaffold 1 itself is not required. For this reason, the lifting equipment does not require a large scale, and the installation and disassembly of the suspension scaffold 1 does not take time and can be easily performed.

  In addition, the suspension scaffold assembled in the lower part of the communication tower is not raised to a position immediately below the antenna support sections 120 and 130, but the suspension scaffold 1 is attached to the antenna support sections 120 and 130 of the communication tower. Because it is installed directly, it is not necessary to make the suspension scaffold 1 wider than the tower width at the bottom of the communication tower, so the number of members constituting the suspension scaffold 1 is increased and the member size is increased. Therefore, it is easy to install and dismantle the suspension scaffold 1 without any trouble.

  Further, the curing net 6 suspended from the curing net horizontal member 22 attached to the antenna support portions 120 and 130 of the communication tower has a wire 24 fixed to the upper end portion of the curing net 6 and the horizontal for the curing net. It is wound around a winch 26 via pulleys 23 installed at both ends of the material 22, and by pulling out or winding the wire 24 by the winch 26, the curing net 6 can be raised and lowered along the communication tower. Since it is provided, the curing net 6 can be easily installed at an arbitrary height with respect to the communication tower.

  Furthermore, since the curing net 6 hangs down from the horizontal material 22 for the curing net attached to the antenna support portions 120 and 130 of the communication tower, the width of the suspension scaffold 1 is adjusted according to the outer diameter of the curing net 6. It is not necessary to set, and the length of the horizontal material 22 for the curing net may be set according to the outer diameter of the curing net 6. Therefore, since it is not necessary to increase the width of the suspension scaffold 1 according to the outer diameter of the curing net 6, the number of members constituting the suspension scaffold 1 does not increase and the member size does not increase. Installation and dismantling of the scaffold 1 can be performed easily without any effort.

  Moreover, the suspension scaffold 1 and the curing net installation apparatus used for the construction work of the communication tower of the present invention include a plurality of suspension scaffold frames 2, a plurality of upper connection members 3 that connect the plurality of suspension scaffold frames 2, and a plurality of suspension scaffold frames 2. A lower connecting member 4 for connecting the suspension scaffold frame 2, a flooring 5 installed via the lower connecting member 4, and a device 7 for installing a substantially cylindrical curing net 6 around the communication tower. Therefore, the installation and disassembly of the suspension scaffold 1 and the curing net installation device does not take time and can be easily performed. Further, since the worker can get on or walk on the suspension scaffold 1 directly installed on the antenna support portions 120 and 130 of the communication tower, the work for painting the antenna support portions 120 and 130 and the work wire for the chair type gondola 27 are provided. 28 can be adjusted, and the painting work of the communication tower can be performed smoothly.

  In the above description, the antenna support sections 120 and 130 are described in the case where the suspension scaffold 1 and the curing net installation device used for the painting construction of the communication tower of the present invention are installed on the single pillar structure tower 100 of the arm system and the ring system. However, even when the structure of the steel tower body 110 is a truss structure or a ramen structure, the suspension scaffold 1 and the curing net installation device of the present invention can be installed with the same configuration. In addition, in a communication tower in which a plurality of antenna support portions 120 and 130 are installed, the suspension scaffold 1 and the present invention can be attached to the antenna support portions 120 and 130 above the lower antenna support portions 120 and 130 with the same configuration. A curing net installation device can be installed. As an example, the case where the antenna support 130 installs the suspension scaffold 1 and the curing net installation device of the present invention on the ring-type truss structure tower 101 will be described. FIG. 24 is a front view showing an installation state of a suspension scaffold and a curing net on a truss structure steel tower in which two ring-type antenna support portions are installed.

  As shown in FIG. 24, a plurality of suspension scaffold frames 2 are first installed on the upper antenna support portion 130. Next, the plurality of suspension scaffold frames 2, 2,... Are connected to the vertical members 9, 9,. The upper connection member 3 is installed via the connection member 12 for the upper connection member, and a plurality of suspension scaffold frames 2, 2,... The lower connecting member 4 is installed through the connecting member 13 for the lower connecting member provided on the vertical members 9, 9,. Next, the flooring 5 is laid between the lower connection members 4, and the suspension scaffold 1 of the present invention is installed on the upper antenna support portion 130.

  Next, the apparatus 7 which installs the substantially cylindrical curing net 6 around a communication tower is installed. First, the horizontal member 22 for the curing net having the pulleys 23 installed at both ends is installed on the upper surface of a member constituting the upper support 131 of the upper antenna support 130. A winch 26 installed in the vicinity of the base of the communication tower through a pulley 23 installed on both ends of the horizontal member 22 for the curing net with wires 24 fixed to the upper end of the substantially cylindrical curing net 6. The curing net installation device of the present invention is installed. Thereby, the curing net 6 is installed so as to be movable up and down along the communication tower by pulling out or winding the wire 24 by the winch 26.

  In order to install the substantially cylindrical curing net 6 around the communication tower, the wire 24 is wound up by the winch 26 and the upper end of the curing net 6 is raised above the communication tower. Is raised to a position just below the suspension scaffold 1 installed on the antenna support portion 130 on the upper stage, so that the curing net 6 is suspended along the communication tower. The curing net 6 that hangs down along the communication tower can be installed between the upper antenna support 130 and the lower antenna support 130, and the outer diameter of the curing net 6 is lower than the antenna support. By making it larger than the outer diameter of the part 130, it can also be installed between the position immediately below the suspension scaffold 1 installed on the upper antenna support part 130 and the lower part of the communication tower.

  With the above-described configuration, the suspension scaffold 1 and the curing net installation device used for the painting work of the communication tower of the present invention are positioned immediately below the antenna support portions 120 and 130 with the suspension scaffold 1 assembled at the lower part of the communication tower. In order to install the suspension scaffold 1 directly on the antenna support sections 120 and 130 on the upper stage of the communication tower, a plurality of arm-type and ring-type antenna support sections 120 and 130 are installed. Also in the communication tower, the antenna support portions 120 and 130 can be installed above the lower antenna support portions 120 and 130 without dismantling and removing them.

DESCRIPTION OF SYMBOLS 1 Suspended scaffold 2 Suspended scaffold 3 Upper connection member 4 Lower connection member 5 Floor material 6 Curing net 7 Device which installs a substantially cylindrical curing net around the communication tower 8 Upper horizontal material 9 Vertical material 10 Lower side Horizontal material 11 Fixing tool 12 Connecting tool for upper connecting member 13 Connecting tool for lower connecting member 14 Connecting tool for handrail material 15 Handrail material 15a First handrail material 15b Second handrail material 15c Third handrail material 15d Fourth Handrail material 16 Connecting material for lower horizontal material 17 Connecting device 18 Horizontal material for flooring material 19 Horizontal material for flooring material 20 Hook for locking 21 Steel plate 22 Horizontal material for curing net 23 Pulley 24 Wire 25 Pulley connecting tool 26 Winch 27 Chair-type gondola 28 Work wire 29 Floor material installation member 100 Single pillar structure steel tower 101 Truss structure steel tower 102 Antenna support pillar 110 Steel tower body 111 Steel pipe 112 Flange portion 120 Arm-type antenna support portion 121 Upper support portion 122 Lower support portion 123 Arm metal main member 124 Arm fixing material 125 Support column mounting bracket 130 Ring-type antenna support portion 131 Upper support portion 132 Lower support portion 133 Connecting member 134 Ring fixing material 135 Ring member 136 Bracket for supporting column mounting

Claims (2)

A device for installing a suspension scaffold and a curing net installed on an antenna support unit having an upper support unit and a lower support unit for standingly fixing a plurality of antenna support columns to a communication tower,
An upper horizontal member that is installed on the upper surface of a member that constitutes the upper support portion of the antenna support portion, and that is formed to have a length in which both ends protrude in the horizontal direction from the upper support portion;
Connected near both ends of the upper horizontal member, arranged in the vertical direction with respect to the upper horizontal member, and the end on the side not connected to the upper horizontal member is below the lower support portion of the antenna support portion A pair of vertical members formed in a protruding length;
A lower horizontal member installed to connect ends of the pair of vertical members not connected to the upper horizontal member;
A plurality of suspension scaffold frames,
An upper connection member for connecting the plurality of suspension scaffold frames in the vicinity of a connection portion between the upper horizontal member and the vertical member of each suspension scaffold frame;
A lower connection member for connecting the plurality of suspension scaffold frames in the vicinity of a connection portion between the vertical member and the lower horizontal member of each suspension scaffold frame;
Floor materials installed via lower connecting members;
A device that installs a substantially cylindrical curing net around the communication tower;
A suspension scaffold and a curing net installation device used for painting construction of a communication tower characterized by comprising: An apparatus for installing the substantially cylindrical curing net according to claim 1 around a communication tower,
A substantially cylindrical curing net installed around the communication tower;
A horizontal material for a curing net that is installed on the upper surface of a member that constitutes the upper support portion of the antenna support portion and that has both ends formed in a length that protrudes horizontally from the upper support portion;
Pulleys installed at both ends of the horizontal material for the curing net,
A winch installed near the base of the communication tower,
Have
A wire is fixed to the upper end of the curing net;
The wire is wound around the winch via pulleys installed at both ends of the horizontal material for the curing net,
By pulling out or winding the wire with a winch, a curing net was provided so as to freely move up and down along the communication tower.
Suspension scaffold and curing net installation device used for painting construction of communication towers characterized by

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