JP5649556B2 - Steel tower lifting device - Google Patents

Description

  The present invention relates to a tower lifting device for moving a tower.

  Rust prevention treatment such as plating is applied to the steel tower for communication, transmission line, etc., and the performance of the rust prevention treatment decreases due to the steel tower being exposed to wind and rain, deterioration of the steel tower over time, Parts may deteriorate. Therefore, repair work such as rust prevention repair and parts replacement is regularly performed.

  In the conventional repair work, a scaffold is temporarily installed on the steel tower in order for the worker to move up and down the steel tower. On such a scaffold, the worker cleans the steel tower and paints the steel tower. For example, there is a structure in which a scaffold is attached to the outer periphery of a steel tower as in Patent Document 1. A large number of such scaffolds are temporarily installed in a wide range of the entire tower, and an operator moves over the entire tower by climbing the many scaffolds to repair the tower.

JP-A-9-137601

  However, in the conventional repair work, in order for the worker to move up and down the steel tower, a temporary work such as that of Patent Document 1 is used to spend a lot of time on the temporary work of the scaffold. Moreover, since a space for storing materials for scaffolding is required, a large space is required around the steel tower. Transporting heavy materials for scaffolding around the steel tower is a great effort. Since the worker performs the repair work in a state where the posture is changed corresponding to the repair target region located above the scaffold, the worker cannot perform the repair work in a stable posture. Therefore, in the conventional repair work, much time is spent on the work, and work efficiency is low. Furthermore, regarding the temporary construction of the scaffold, a high level of expertise is required, and many scaffolding materials are required. Therefore, a lot of costs are spent for workers having high technical skills, a lot of costs are spent for scaffolding materials, and a lot of costs are spent on repair work. .

  This invention is made | formed in view of such an actual condition, The objective is to provide the tower raising / lowering apparatus which enables the repair work of a tower to be implemented with low cost, quickness, and high efficiency.

In order to solve the problems, a tower lifting apparatus according to an aspect of the present invention is a tower lifting apparatus for moving a tower, and includes a seat and a seat winch that can wind and unwind a wire. An assembly, a seat suspension mechanism disposed at an upper portion of the tower and having a wire tip attached thereto, and a rail disposed along the horizontal direction of the tower at the upper portion of the tower; The suspension mechanism has a pair of roller assemblies that are spaced apart from each other in the width direction of the rail in a cross-sectional view of the rail, and the roller assembly is configured to be rollable, and A pair of rollers that are spaced apart from each other in the longitudinal direction of the rail, and a pair of flanges that respectively correspond to the pair of roller assemblies and extend in the width direction of the rail in a cross-sectional view of the rail; Above In the tower elevating apparatus, each of the pair of roller assemblies is configured to abut against the guide surfaces of the pair of flanges, and arranged at intervals in the circumferential direction of the tower. In addition, two rail support members projecting outward from the tower are attached to each of the plurality of support columns, and each rail support member is detachably attached to the support column and a lower side. An upper mounting portion and a lower mounting portion that are spaced apart above the lower mounting portion, and a rail that projects from the lower mounting portion toward the outside of the tower. A support member, and a diagonal member connecting the upper mounting portion and the tip of the rail support portion, and the lower support portions of the two rail support members in each support column are respectively arranged on the outer periphery of the support column. Around 2 of the three elements that are substantially equally divided and connected to each other, and the rail support portion of the rail support member that is attached to each of the columns that are adjacent to each other, Each of the longitudinal ends is attached, the seat suspension mechanism is disposed at a longitudinal middle portion of the rail, and the seat winch winds the wire, thereby raising the seat assembly, And the seat winch unwinds the wire, so that the seat assembly is lowered, and the roller rolls along the guide surface of the flange along the longitudinal direction of the rail. The seat suspension mechanism that suspends the seat assembly is configured to be movable in the longitudinal direction of the rail .

According to the present invention, the following effects can be obtained. A tower lifting apparatus according to an aspect of the present invention is a tower lifting apparatus for moving a tower, and includes a seat assembly including a seat and a winch for a seat capable of winding and unwinding a wire. A seat suspension mechanism disposed at an upper portion and attached with a tip of the wire; and a rail disposed along a horizontal direction of the tower at an upper portion of the tower, wherein the seat suspension mechanism includes the rail. Each having a pair of roller assemblies arranged at a distance from each other in the width direction of the rail in a cross-sectional view of the rail, the roller assemblies being configured to be rollable and spaced from each other in the longitudinal direction of the rail. And a pair of flanges extending in the width direction of the rail in a cross-sectional view of the rail corresponding to the pair of roller assemblies. Each of the pair of roller assemblies is configured to contact the guide surfaces of the pair of flanges. In the tower elevating device, each of the plurality of support columns arranged at intervals in the circumferential direction of the tower. Two rail support members projecting outward from the tower from the pillar are attached, and each rail support member is an upper attachment part and a lower attachment part detachably attached to the pillar, An upper mounting portion and a lower mounting portion that are spaced apart above the lower mounting portion, a rail support portion that protrudes outward from the lower mounting portion, and the upper mounting portion. And a diagonal member that connects the tips of the rail support portions, and the lower support portions of the two rail support members in each support column are substantially even in the circumferential direction of the support column on the outer periphery of the support column. Divided Each of the longitudinal ends of the rail is composed of two elements out of three elements that are connected to each other, and the rail support portions of the rail support members that are attached to the struts adjacent to each other, respectively. Mounted, the seat suspension mechanism is disposed in the longitudinal middle of the rail, the seat winch winds up the wire, the seat assembly is raised, and the seat winch is The seat assembly is configured to descend by unwinding a wire, and the roller is suspended on the seat assembly by rolling the guide surface of the flange along the longitudinal direction of the rail. The seat suspension mechanism is configured to be movable in the longitudinal direction of the rail . Therefore, an operator can easily move in the vertical direction of the steel tower by raising and lowering the seat assembly while riding on the seat of the seat assembly without temporarily setting a scaffolding as in the past, and the seat assembly By moving in the longitudinal direction of the rail, it can be easily moved in the horizontal direction of the steel tower. In particular, since the seat assembly can be moved finely so that the worker is positioned in front of the repair target area, the worker can perform repair work in a stable posture. In addition, since there is no need to temporarily install the scaffold, the temporary work of the scaffold can be omitted, and the time spent for the repair work can be shortened. In addition, it does not require workers with high technical skills for temporary construction of scaffolds and does not require materials for scaffolds, so it can reduce costs for workers with high technical skills, and materials for scaffolds Can reduce costs. Therefore, repair work of the steel tower can be carried out at low cost, quickly, and with high efficiency.

Furthermore, rail support members projecting outward from the steel tower from the support pillars are attached to a plurality of support pillars arranged at intervals in the circumferential direction of the steel tower, and the rail support members of the pillars adjacent to each other. Both ends of the rail in the longitudinal direction are attached to the rail, and the rail is supported, and the seat suspension mechanism is disposed in the middle portion of the rail in the longitudinal direction. With the seat assembly located at, the outer periphery of the steel tower can be repaired quickly and efficiently. Moreover, a rail will be stably supported by the rail support member attached to the support | pillar of a steel tower which has high intensity | strength. Since the seat suspension mechanism that suspends the seat assembly is attached to the rail that is stably supported in this way, the worker who has boarded the seat of the seat assembly performs repair work in a stable state. As a result, repair work can be carried out quickly and efficiently.

It is a schematic perspective view which shows an example of the steel tower used as repair object in embodiment of this invention. It is a schematic side view which shows the whole steel tower of the state which attached the steel tower repair system which concerns on embodiment of this invention. It is a schematic side view which expands and shows the principal part of the steel tower of the state which attached the steel tower repair system which concerns on embodiment of this invention. (A) It is a schematic front view which shows the steel tower raising / lowering apparatus which concerns on embodiment of this invention. (B) It is a schematic side view which shows the steel tower raising / lowering apparatus which concerns on embodiment of this invention. (A) It is a schematic plan view which shows the seat suspension mechanism of the tower raising / lowering apparatus which concerns on embodiment of this invention. (B) It is a schematic front view which shows the seat suspension mechanism of the tower raising / lowering apparatus which concerns on embodiment of this invention. (C) It is a schematic side view which shows the seat suspension mechanism of the tower raising / lowering apparatus which concerns on embodiment of this invention. It is AA sectional drawing of FIG. It is the B section enlarged view of FIG.

A tower repair system and tower repair method according to an embodiment of the present invention will be described below.
Initially, with reference to FIG. 1, the steel tower 100 used as repair object in this embodiment is demonstrated. In FIG. 1, as an example, the steel tower 100 is a triangular ramen steel tower. The steel tower 100 is provided with three columns 101 extending in the vertical direction from the ground G with an interval in the circumferential direction. Adjacent struts 101 at the top of the steel tower 100 are connected by a strut connecting member 102. In addition, two ring-shaped stage members 103 are arranged at an upper portion of the steel tower 100 so as to surround the three support pillars 101 at intervals in the height direction of the steel tower 100. The support column 101 and the stage member 103 are connected by a stage connection member 104 extending from the outer periphery of the support column 101 in the diameter direction of the stage member 103.

Next, with reference to FIGS. 2-7, the tower repair system (henceforth "repair system") 1 which concerns on embodiment of this invention is demonstrated.
As shown in FIG. 2 and FIG. 3, the repair system 1 includes a tower net temporary device (hereinafter, “net temporary device”) 2 and a tower lifting device 3. Details of the net temporary device 2 and the tower lifting device 3 will be described below.

The net temporary device 2 will be described with reference to FIG. In FIG. 3, a part of the stage member 103 of the steel tower 100 is omitted, and the column connecting member 102 and the stage connecting member 104 are shown.
The net temporary installation device 2 includes a flexible net 4 formed in a substantially cylindrical shape, and the net 4 is disposed so as to surround the three columns 101 of the steel tower 100. The net temporary installation device 2 includes three net winches 6 configured to wind and unwind the cable 5, and the net winch 6 is detachably attached to a lower portion of the support column 101. The net temporary installation device 2 includes a pulley group 7 detachably attached to an upper portion of the steel tower 100 corresponding to each net winch 6. The net temporary installation device 2 includes a net lower holding member 8 for holding the lower end of the net 4, and the net holding member 8 is detachably attached to the lower portion of the support column 101.

  The details of the net 4 will be described with reference to FIG. A plurality of net support rings 4 a formed so as to coincide with the substantially cylindrical shape of the net 4 are attached to the net 4. One of the plurality of net support rings 4a is attached to the upper end portion of the net 4, the other one of the plurality of net support rings 4a is attached to the lower end portion of the net 4, and the rest of the plurality of net support rings 4a Is attached to the middle part of the net 4. The plurality of net support rings 4 a are arranged at intervals in the longitudinal direction of the net 4. A net suspension member 4 b is attached to the upper end portion of the net 4.

  With reference to FIG. 3, details of the net winch 6, the pulley group 7, and the net holding member 8 that are attached to the steel tower 100 will be described. The net winch 6 is disposed on the center side of the steel tower 100 with respect to the support column 101. The pulley group 7 includes a first pulley 7 a that is detachably attached to the column connecting member 102 of the tower 100, and a second pulley 7 b that is detachably attached to the stage connecting member 104 of the tower 100. The 1st pulley 7a is arrange | positioned above the net winch 6, and the 2nd pulley 7b is arrange | positioned at intervals in the direction which goes to the outer periphery from the center of the steel tower 100 with respect to the 1st pulley 7a. An intermediate portion of the cable 5 extending from the net winch 6 is hung on the first pulley 7 a and the second pulley 7 b, and a tip portion of the cable 5 is attached to the net suspension member 4 b of the net 4. Yes. The net holding member 8 includes an attachment portion 8a that is detachably attached to the support column 101, an arm portion 8b that protrudes from the support column 101 toward the outside of the steel tower 100, and a net fastening portion 8c that is provided on the upper end of the arm portion 8b. And have. The net holding member 8 is disposed below the net winch 6, and the net retaining portion 8 c of the net holding member and the support ring 4 a at the lower end of the net 4 are connected by a net wire 9.

  The tower elevating device 3 will be described with reference to FIGS. As shown in FIGS. 4A and 4B, the tower elevating device 3 includes a seat assembly 10 that conveys a worker P. The seat assembly 10 can be seated by a worker. A seat 10a and a seat winch 10b configured to wind and unwind the wire 11 are provided. The seat winch 10b is disposed in the lower part of the seat 10a. Furthermore, the seat assembly 10 has a cylindrical wire support portion 10c extending upward from the seat winch 10b, and the wire 11 extends upward from the seat winch 10b through the wire support portion 10c. ing.

  As shown in FIGS. 4A and 4B, the tower elevating device 3 includes a seat suspension mechanism (hereinafter referred to as “suspending mechanism”) 12 to which the tip of the wire 11 is attached, and a suspension. And a rail 13 to which a mechanism 12 is attached. As shown in FIGS. 5A to 5C, the suspension mechanism 12 includes a pair of roller assemblies having a pair of rollers 12 a and 12 b configured to be able to roll, and a distal end portion of the wire 11. And a mechanism body 12d to which a pair of rollers 12a and 12b and a wire support 12c are attached. The pair of rollers 12a and 12b are arranged at intervals in the longitudinal direction of the rail 13, and the pair of roller assemblies having such a pair of rollers 12a and 12b are spaced from each other in the width direction of the rail 13. It is arranged in the space. The wire support 12c is disposed below the pair of roller assemblies in the vertical direction, in the middle of the pair of roller assemblies in the width direction of the rail 13, and in the middle of the pair of rollers 12a and 12b in the longitudinal direction of the rail 13. Yes. The mechanism main body 12d has a roller support portion 12d1 that is spaced apart from each other in the width direction of the rail 13, and a projection portion 12d2 that extends from the lower portion of the pair of roller support portions 12d1 toward the center of the suspension mechanism 12. doing. The pair of rollers 12a and 12b is attached to the inner surface of the roller support portion 12d1 so as to be able to roll. The wire support 12c is sandwiched between the pair of protrusions 12d2. Furthermore, the rail 13 is formed in a substantially I shape in a cross-sectional view, and a pair of flanges 13 a extending in the width direction of the rail 13 in the cross-sectional view of the rail 13 are formed in the lower portion of the rail 13. The pair of roller assemblies respectively correspond to the pair of flanges 13a, and the pair of rollers 12a and 12b is configured to be able to roll on the guide surface 13b located above the flange 13a of the rail 13. Therefore, the suspension mechanism 12 is supported by the rail 13 and is movable in the longitudinal direction of the rail 13.

  As shown in FIGS. 6 and 7, the tower elevating device 3 includes a rail support member 14 configured to support the rail 13 and be detachable from the support column 101. The rail support member 14 has an upper attachment portion 14a and a lower attachment portion 14b attached to the support column 101, and the upper attachment portion 14a is disposed above the lower attachment portion 14b with a space therebetween. The rail support member 14 has a rail support portion 14c to which the rail 13 is attached. The rail support portion 14c protrudes outward from the tower 100 from the lower mounting portion 14b. Moreover, the rail support member 14 has an oblique member 14d that connects the upper mounting portion 14a and the tip portion of the rail support portion 14c.

  As shown in FIG. 6, the rail support members 14 are respectively attached to adjacent struts 101, and the upper surfaces of both ends of the rail 13 are disposed on the lower surfaces of the rail support portions 14 c of the pair of rail support members 14 thus mounted. Are installed respectively. Therefore, the rail 13 is suspended between the rail support members 14 respectively attached to the adjacent columns 101. Note that the suspension mechanism 12 is disposed at an intermediate portion of the rail 13. Moreover, the rail 13 is attached to the rail support member 14 so that the space | interval with the support | pillar 101 can be adjusted. Therefore, as shown by a solid line in FIG. 6, the distance between the center in the width direction of the rail 13 and the center of the support column 101 can be a distance d, and as shown by a virtual line in FIG. 6, The distance between the center in the width direction and the center of the column 101 can be a distance d ′ (> distance d). The rails 13 configured in this way are arranged between the columns 101, and a pair of rail support members 14 are arranged for attaching the rails 13, respectively. In this case, the two rail support members 14 are attached to the single column 101.

In the embodiment of the present invention, a steel tower repair method using the repair system 1 will be described.
First, a temporary network method using the temporary network device 2 will be described. The net winch 6 is disposed on the center side of the steel tower 100 with respect to each column 101 and attached to the lower part of each column 101. The first pulley 7 a is disposed above each net winch 6 and attached to each column connecting member 102. The second pulleys 7 b are arranged at intervals with respect to the first pulleys 7 a in the direction from the center of the steel tower 100 toward the outer periphery, and are attached to the stage connecting members 104. The net holding member 8 is disposed below each net winch 6, and the attachment portion 8 a of the net holding member 8 is attached to the lower portion of each column 101. The net 4 is arranged in a folded state so as to surround the three columns 101 near the ground G. The support ring 4 a at the lower end of the net 4 and the net fastening portion 8 c of the net holding member 8 are connected by a net wire 9. The middle part of the cable 5 extending from the net winch 6 is hung on the first pulley 7 a and the second pulley 7 b, and the tip of the cable 5 is attached to the net suspension member 4 b of the net 4.

  In the net temporary device 2 in such a state, when the net 4 is installed, the cable 5 is wound up by each net winch 6 and the folded net 4 is raised so that the ground G and the upper end of the net 4 are The upper end of the net 4 is lifted up to the vicinity of the lower stage member 104. When the net 4 is stored, the cable 5 is unwound from each net winch 6, the net 4 in an extended state is lowered and folded between the ground G and the upper end of the net 4, and the upper end of the net 4 Can be lowered to near the ground G.

  Next, a steel tower repair method using the net temporary device 2 and the steel tower lifting device 3 will be described. The suspension mechanism 12 is attached to the middle part of the rail 13. A rail support member 14 is attached to each support column 101, and both ends of the rail 13 are attached to the rail support member 14 attached to the adjacent support column 101. The seat assembly 10 is disposed on the ground G, and the tip end portion of the wire 11 extending from the seat winch 10 b of the seat assembly 10 is attached to the suspension mechanism 12. The worker P is seated on the seat 10 a of the seat assembly 10. The wire 11 is wound up by the seat winch 10b, and the worker P moves together with the seat assembly 10 toward the upper side of the steel tower 100. Further, the wire 11 is unwound from the seat winch 10b, and the worker P moves toward the lower side of the steel tower together with the seat assembly 10. The worker P moves in the horizontal direction of the tower 100 by moving the suspension mechanism 12 in the longitudinal direction of the rail 13. By moving the seat assembly 10 up and down and horizontally in this way, the worker P can move between the net 4 and the support pillar 101 together with the seat assembly 10 to the repair target area of the tower 100. The worker P that has reached the repair target area performs work such as cleansing and painting while sitting on the seat 10a of the seat assembly 10.

  As described above, according to the embodiment of the present invention, in the net temporary device 2, the cable 5 is wound by the net winch 6 in a state where the net 4, the net winch 6, and the pulley group 7 are arranged on the steel tower 100. Thus, the net 4 can be easily installed around the steel tower 100 simply by raising the net 4. Further, since the net 4 can be quickly stored by simply unwinding the cable 5 from the net winch 6 and lowering the net 4, the net 4 can be quickly stored even when a strong wind suddenly occurs. be able to. Furthermore, after the strong wind stops, the net 4 can be quickly installed again. Elements for installing the net 4 such as the net winch 6 and the pulley group 7 are arranged inside the net 4 and inside the column 101 of the tower 100, so that there is a large area around the tower 100. There is no need to secure space. Since it is not necessary to install a scaffold to install the net 4, and the work of installing the scaffold can be omitted, the time spent for installing the scaffold can be reduced, and the work for transporting heavy materials for scaffolding to the vicinity of the steel tower Can be reduced. Therefore, the net 4 can be temporarily installed with high efficiency. In addition, it is possible to reduce the cost required for workers having high technical skills related to the installation of scaffolding, and the cost of scaffolding materials can be reduced. Therefore, the installation cost of the net 4 can be reduced.

  According to the embodiment of the present invention, in the net temporary device 2, the first pulley 7a and the second pulley 7b can be quickly and stably attached to the members of the existing steel tower 100, respectively. Installation work can be performed quickly and with high efficiency.

  According to the embodiment of the present invention, in the tower elevating device 3, the worker P lifts and lowers the seat assembly 10 while riding on the seat 10 a of the seat assembly 10 without temporarily setting a scaffolding as in the prior art. Thus, the steel tower 100 can be easily moved in the vertical direction, and the seat assembly 10 can be easily moved in the horizontal direction of the steel tower 100 by moving in the longitudinal direction of the rail 13. In particular, since the seat assembly 10 can be moved finely so that the worker P is located in front of the repair target area, the worker P can perform repair work in a stable posture. In addition, since there is no need to temporarily install the scaffold, the temporary work of the scaffold can be omitted, and the time spent for the repair work can be shortened. In addition, it does not require workers with high technical skills for temporary construction of scaffolds and does not require materials for scaffolds, so it can reduce costs for workers with high technical skills, and materials for scaffolds Can reduce costs. Therefore, repair work of the steel tower 100 can be carried out at low cost, quickly, and with high efficiency.

  According to the embodiment of the present invention, in the tower lifting / lowering device 3, the outer periphery of the tower 100 can be repaired quickly and efficiently using the seat assembly 10 located on the outer periphery side of the tower 100. Moreover, the rail 13 will be stably supported by the rail support member 14 attached to the support | pillar 101 of the steel tower 100 which has high intensity | strength. Since the seat suspension mechanism 12 that suspends the seat assembly 10 is attached to the rail 13 that is stably supported in this manner, the worker P who has boarded the seat 10a of the seat assembly 10 is stable. The repair work can be performed in a state, and as a result, the repair work can be performed quickly and efficiently.

  According to the embodiment of the present invention, in the repair system 1 including the above-described net temporary device 2 and the tower lifting device 3, it is not necessary to install a scaffold for repair work for the worker P to move to the repair target area. Therefore, the installation work of the scaffold for repair work can also be omitted. Therefore, the repair work can be performed quickly and with high efficiency, and the repair work cost can be reduced.

  Although the embodiments of the present invention have been described so far, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention.

  For example, as a modification of the present invention, the steel tower may be other than the triangular ramen steel tower, or the steel tower may have a structure having four or more columns. In this case, the net suspension members 4b, the cables 5, the net winches 6, and the pulley groups 7 of the number of nets 4 corresponding to the number of support columns may be used. The same effect as the embodiment of the present invention can be obtained.

1 Steel tower repair system (repair system)
3 Steel tower lifting device 10 Seat assembly 10a Seat 10b Seat winch 11 Wire 12 Seat suspension mechanism 12a First roller 12b Second roller 13, 13 'Rail 13a Flange 13b Guide surface 14 Rail support member 100 Steel tower 101 Column 102 Column connecting member 103 Stage member 104 Stage connecting member G Ground P Workers d, d 'distance

Claims (1)

A steel tower lifting device for moving the tower,
A seat assembly having a seat and a winch for the seat that enables winding and unwinding of the wire;
A seat suspension mechanism disposed at the top of the steel tower and attached to the tip of the wire;
A rail arranged along the horizontal direction of the tower at the top of the tower,
The seat suspension mechanism has a pair of roller assemblies that are spaced apart from each other in the width direction of the rail in a cross-sectional view of the rail,
The roller assembly includes a pair of rollers that are configured to be rollable and spaced apart from each other in the longitudinal direction of the rail,
A pair of flanges extending in the width direction of the rail in a cross-sectional view of the rail corresponding to the pair of roller assemblies are formed on the rail,
Each of the pair of roller assembly has been configured so as to contact the guide surfaces of the pair of flanges, the tower lifting device,
Two rail support members projecting outward from the tower are attached to each of the plurality of pillars arranged at intervals in the circumferential direction of the tower,
Each rail support member is an upper mounting portion and a lower mounting portion that are detachably mounted on the support column, and the upper mounting portion and the lower mounting portion that are arranged with a space above the lower mounting portion. A rail support portion projecting outward from the lower tower from the lower mounting portion, and an oblique member connecting the upper mounting portion and the tip of the rail support portion,
The lower support portions of the two rail support members in each support column are each composed of two elements among the three elements that are substantially equally divided in the peripheral direction of the support column and connected to each other at the outer periphery of the support column. Has been
Each of both ends in the longitudinal direction of the rail is attached to the rail support portion of the rail support member attached to each of the columns adjacent to each other,
The seat suspension mechanism is disposed in the middle in the longitudinal direction of the rail;
The seat winch is configured to wind up the wire, the seat assembly is raised, and the seat winch unwinds the wire so that the seat assembly is lowered.
When the roller rolls on the guide surface of the flange along the longitudinal direction of the rail, the seat suspension mechanism that suspends the seat assembly is configured to be movable in the longitudinal direction of the rail. The tower lifting device.

Images