JP5456201B1 - Truss type tower construction / repair work tethering device and truss type steel tower construction / repair method using moving lifting scaffold using the tethering device - Google Patents

Abstract

[PROBLEMS] To provide a truss-type steel tower construction / repair work connecting device having an excellent effect in terms of construction period and safety, and a truss-type steel tower construction / repair method using a movable lifting scaffold using this connecting device. is there.
One or more elongated members (12a, 12b) are provided, one end of which is rotatably attached to the transverse member via a pin connector (18), and the other end is a free end. The first tether (12) and one or more elongated members (14a, 14b), one end of which is rotatably attached to the transverse member via a pin connector, A second tether (14) whose other end is a free end, and a fixture (19) for fixing the free ends of the first and second tethers to a desired member of the truss tower A tethering device (10) is provided.
[Selection] Figure 1

Description

  The present invention relates to a connecting device used for construction / repair work of a truss tower and a method of constructing / repairing a truss tower using a moving lifting scaffold using the connecting device. Examples of the truss tower in the present invention include various truss towers in addition to a power transmission tower.

  Conventionally, when constructing or repairing a tower-like structure, work has been carried out by assembling a frame scaffold, a single pipe scaffold, or using a gondola. The present inventor has proposed a novel wall connecting band used for construction / repair work of a cylindrical structure such as a radio tower among tower-like structures in Patent Document 1 below.

Japanese Patent No. 5299982

  When scaffolds are used in various constructions of tower-like structures, there is a problem that it takes time to assemble and dismantle frame scaffolds and single pipe scaffolds, which is disadvantageous in terms of cost and construction period. In addition, when working with a gondola, the work may be interrupted due to the influence of the wind, which is also problematic in terms of construction period and safety. Furthermore, assembly, dismantling of scaffolds, and installation of gondola involve work at heights and dangerous work, and there is a risk of accidents such as falling down. In consideration of these points, the present inventor has developed a new wall connecting band as described above, and this inconvenience has been solved for the construction and repair work of cylindrical structures among tower structures. However, in the construction and repair work of truss towers, such inconveniences still remained.

  The present invention was developed in view of such a situation, and overcomes the problems of the prior art described above, and is a bridge for truss-type steel tower construction / repair work that has excellent effects in terms of construction period and safety. It is an object of the present invention to provide a device and a method for constructing and repairing a truss-type steel tower using a moving lifting type scaffold using the connecting device.

  The connecting device for truss tower construction / repair work according to claim 1 of the present application is constituted by one or a plurality of elongated members, and one end thereof is arranged so as to be substantially orthogonal to the elongated members. A first connecting member rotatably attached to the cross member via a pin connector, the other end being a free end, and positioned adjacent to the first connecting member; A second tether formed by an elongated member, one end of which is rotatably attached to the cross member via a pin connector, and the other end is a free end; and the first and first A fixing device for fixing the free end of the two tethers to a desired member of the truss tower, the cross member is attached to a predetermined position of the scaffold, and the free of the first and second tethers Truss type with the above fixing device And it is characterized in that it is configured or deselect secured or fixed to the desired member of the tower.

  A connecting device for truss tower construction / repair work according to claim 2 of the present application is the device according to claim 1, wherein the one end of the elongated member constituting the first connecting member is connected to the transverse member. The one end of the elongate member constituting the second tether can be removed from the transverse member.

  The truss type tower construction / repair work connecting device according to claim 3 of the present application is constituted by one or a plurality of elongated members, and one end thereof is rotatably attached to a predetermined portion of the scaffold via a pin connector. The other end portion is a free end, and is located adjacent to the first end portion and is composed of one or more elongated members, and one end portion of the scaffold is A truss-type steel tower connecting the second end of the second connecting member, which is rotatably attached to a predetermined location via a pin connector, the other end being a free end, and the first and second connecting members A fixing tool for fixing to the desired member, and the free ends of the first and second connecting members are selectively fixed to and unlocked from the desired member of the truss tower by the fixing tool. It is specially configured to It is an.

  A connecting device for truss tower construction / repair work according to claim 4 of the present application is the device according to any one of claims 1 to 3, wherein the first connecting material and the second connecting material. The mounting of the cross member or the scaffold to a predetermined position is rotatable in the vertical direction, the horizontal direction, the diagonally upward direction, or the diagonally downward direction.

  The connecting device for truss tower construction / repair work according to claim 5 of the present application is the apparatus according to any one of claims 1 to 4, wherein the truss tower is a radio tower, a power transmission tower, It is any one of an antenna supporting tower, a chimney supporting tower, a weather observation tower, and a fire fighting tower.

  The construction / repair method of the truss type steel tower by the movable lifting / lowering scaffold using the tethering device according to any one of claims 1 to 5 according to claim 6 is as follows: A first stage of preparing a movable lifting scaffold having a working stage and a mast that serves as a guide rail when the working stage is raised and lowered, and raising the working stage to a predetermined height near the upper end of the steel tower By the way, a second stage of connecting the mast and a desired member of the tower via the connecting device, and the work stage is sequentially raised from the bottom of the truss tower to the vicinity of the upper end for construction or repair. A third stage of performing the work, and selectively fixing or unfixing the free ends of the first and second connecting members to a desired member of the truss tower using the fixing tool. A fourth step of performing work, after the work is completed, while sequentially remove the connecting device and the mast and is characterized in that it comprises a fifth step of lowering the working stage to the ground.

  According to the tethering device of the present invention, the free lifting end of the first tethering member and the free end of the second tethering member are alternately released in the painting work, thereby supporting the movable elevating scaffold to the truss tower. This ensures no damage and eliminates the need for repairs and enables efficient painting work. Since the connecting device of the present invention has a relatively simple configuration, it can be provided at low cost. In addition, since the first and second connecting members can be removed from the transverse member, the removed member can be diverted to other uses, and even if it is difficult to rotate and refill by pin joining. It can be dealt with quickly. Moreover, in the construction / repair method using the tethering device of the present invention, the time required for assembly and disassembly can be greatly shortened, and the safety can be improved by using the movable lifting type scaffolding. Construction can be done without using. Furthermore, by the construction device and repair method using the joining device of the present invention and the joining device of the present invention, good workability can be obtained and construction efficiency can be improved.

[BRIEF DESCRIPTION OF THE DRAWINGS] It is the perspective view which showed the linkage apparatus for truss type steel tower construction and repair work concerning preferable embodiment of this invention. Fig.2 (a) is the side view which showed the connection part of a joining apparatus and a mast, FIG.2 (b) is the figure seen along line 2b-2b of Fig.2 (a). 3A is an enlarged view of the portion 3a of FIG. 2B, and FIG. 3B is a view taken along line 3b-3b of FIG. 3A. It is the whole figure which showed the truss type steel tower in which construction is performed using the connecting apparatus of FIG. It is an enlarged view of the part 5 of FIG. FIGS. 6A and 6B are views showing details of the movable lifting scaffold. It is the figure which showed an example of the use procedure of the connection apparatus of FIG. Fig.8 (a) is the top view which showed the modification of the joining apparatus, FIG.8 (b) and (c) are the figures which showed another modification of the joining apparatus.

  Next, with reference to the drawings, a truss type tower (hereinafter simply referred to as “steel tower”) construction / repair work linkage device (hereinafter simply referred to as “linkage device”) according to a preferred embodiment of the present invention will be described in detail. To do. A connecting device according to a preferred embodiment of the present invention, indicated as a whole by the reference numeral 10 in FIG. 1, includes a first connecting member 12 and a second connecting member 14.

  The first tether 12 is composed of a pair of elongate members 12a and 12b arranged substantially in parallel. Each member 12a, 12b is rotatably attached to a transverse member 16 disposed so that one end 12a1, 12b1 is substantially perpendicular to the member 12a, 12b, and the other end 12a2, 12b2 is a free end.

  Similarly to the first tie material 12, the second tie material 14 is also composed of a pair of elongated members 14 a and 14 b arranged substantially in parallel. And each member 14a, 14b is rotatably attached to the crossing member 16 arrange | positioned so that one edge part 14a1, 14b1 may be substantially orthogonal with respect to member 14a, 14b, and the other edge part 14a2 and 14b2 are free ends.

  The second tether 14 is disposed adjacent to the first tether 12 (ie, member 14a is just outside member 12a and member 14b is just outside member 12b), as shown in FIG. Has been.

  In addition, although each member which comprises the 1st and 2nd joining materials 12 and 14 is illustrated as a circular pipe, other suitable members (for example, a square pipe, a round bar, a square bar, various steel shapes, etc.) May be used. In addition, for the rotatable attachment of the first and second connecting members 12 and 14 to the cross member 16, a dedicated member 18 capable of pin joining may be prepared and used, or pin joining is possible. Commercially available clamps may be used.

  The connecting device 10 also includes a fixture 19 for fixing the free ends of the first and second connecting members 12 and 14 to a desired member of the tower. As the fixture 19, a dedicated fixture may be prepared and used, or a commercially available guard clamp may be used. It is preferable to insert a protective pad 19a between the fixture 19 and the surface of the tower member so that the fixture 19 does not damage the tower member when the fixture 19 is used. As the protective pad 19a, for example, an iron plate formed into a U shape and an elastic material (rubber or the like) attached to the inside of the U shape is used.

  Next, the construction procedure using the connecting device 10 will be described, taking as an example the case where the construction work (the pillar material, the horizontal material, the brace material, etc.) of the truss type radio tower as shown in FIG. 4 is performed. To do.

  For the construction, a movable elevating scaffold 20 as shown in FIG. 5 is used. This movable lifting type scaffold 20 itself is a known device, and has a working stage 22 that serves as a scaffold for raising and lowering, and a square cylindrical mast 24 that serves as a guide rail when the working stage 22 moves up and down. . The mast 24 has a predetermined length and is sequentially added to the upper end with a bolt or the like to secure a required height. 6A, a motor (not shown) and a pinion gear 22a driven by the motor are arranged on the work stage 22, and a rack that meshes with the pinion gear 22a on one surface of the mast 24. 24a is arranged, and the work stage 22 is moved up and down by meshing the pinion gear 22a and the rack 24a by operating the motor to rotate the pinion gear 22a. A guide roller 22b that contacts the corner of the mast 24 is provided in order to stably move the work stage 22 up and down (see FIG. 6B).

  First, the movable lifting type scaffold 20 is prepared, the work stage 22 is raised from the ground, and the mast 24 and a desired member of the steel tower are connected via the connecting device 10 at a predetermined height. In this way, the connecting device 10 and the mast 24 are installed up to a location near the upper end of the steel tower.

  The tethering device 10 is installed by fixing the cross member 16 to a tether stay 26 provided on the mast 24. The cross member 16 is fixed to the connecting stay 26 using a fastener (clamp). After the cross member 16 is fixed to the connecting stay 26, the first and second connecting members 12, 14 are pin-connected to the cross member 16. Then, the free end of the first connecting member 12 and / or the free end of the second connecting member 14 is fixed to a desired member of the steel tower using the fixture 19, thereby connecting the steel tower and the movable lifting scaffold 20. It will be connected via the device 10.

  FIGS. 2A, 2 </ b> B, 3 </ b> A, and 3 </ b> B are diagrams illustrating an example of a connection portion between the mast 24 and the steel tower via the connecting device 10.

  After the connecting device 10 and the mast 24 are installed as described above, the work stage 22 is sequentially raised from below the tower to the vicinity of the upper end, and the painting work is performed from the work stage 22.

  At that time, as shown in FIG. 7, the free end of the first tether 12 and the free end of the second tether 14 are alternately released, thereby ensuring the support of the mast 24 and preventing damage. Smooth painting without repairs can be carried out. That is, in Fig.7 (a), the free end of the 1st connection material 12 is fixed to the horizontal material (L-shaped steel etc.) of a steel tower. In this state, the portion of the horizontal member to which the free end of the second connecting member 14 is fixed is applied. Next, in FIG. 7B, the free end of the second connecting member 14 is rotated downward, and the second connecting member 14 is fixed to the horizontal member in the same manner as the first connecting member 12. Next, in FIG. 7C, while fixing the free end of the second connecting member 14 to the horizontal member of the steel tower, the first connecting member 12 is unfixed and the free end is rotated upward. The portion of the horizontal member to which the free end of the connecting member 12 is fixed is painted. By repeating such a procedure, both the support of the mast 24 and a smooth painting operation can be reliably performed.

  When all the painting operations are completed, the work stage 22 is lowered to the ground while the connecting device 10 and the mast 24 are sequentially removed, and the construction is completed.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say, it is something.

  For example, as shown in FIG. 8 (a), a pair of elongated members 12a, 12b constituting the first connecting member 12 are connected to each other by a lateral blur preventing member 15a, and a pair constituting the second connecting member 14. The long and slender members 14a and 14b may be connected to each other by a lateral shake prevention material 15b.

  Moreover, you may comprise so that the 1st connecting material 12 and the 2nd connecting material 14 can be removed from the crossing member 16. FIG. FIG. 8 (b) shows an example of a pin connector 18 ′ that pins the member 12a to the transverse member 16 so as to be rotatable and removable. The pin connector 18 'is configured to clamp the ring 18'a with a screw 18'b to grip the member 12a. As shown in FIG. 8C, the pin connector 18' loosens the screw 18'b to form a ring. By opening 18'a, the member 12a can be easily removed. By doing so, it becomes easy to divert the removed material to other uses, and disassembly is facilitated, and even when it is difficult to rotate and refill by pin joining, it can be dealt with quickly. . The configurations shown in FIGS. 8B and 8C are merely exemplary, and other appropriate configurations that can be removed may be employed.

  Moreover, in the said embodiment, although the 1st connecting material 12 and the 2nd connecting material 14 are each comprised by two elongate members, the 1st connecting material 12 and the 2nd connecting material 14 are each It may be configured by three or more elongated members. When a light connection is sufficient, the first connecting member 12 and the second connecting member 14 are each formed by one elongated member. You may do it. Moreover, in the said embodiment, although the free end of the 1st connecting material 12 and the 2nd connecting material 14 is comprised so that it may rotate to a perpendicular direction, you may comprise so that it may rotate to a horizontal direction. However, it may be configured to rotate in an obliquely upward direction or an obliquely downward direction.

  Moreover, in the said embodiment, although the 1st joining material 12 and the 2nd joining material 14 are rotatably attached to the crossing member 16, the 1st joining material 12 and the 2nd joining material 14 are Instead of using the cross member 16, it may be rotatably attached to a predetermined location of the scaffold.

  Furthermore, in the said embodiment, although the procedure of construction is demonstrated regarding the painting construction of the outer wall of a truss type radio tower, chimney support towers, such as a power transmission tower, various antenna support towers, a chemical plant, etc. It may be used for construction / repair work of other truss towers such as weather observation towers and fire towers. Further, a different type of scaffolding from the movable lifting scaffold 20 shown in FIG. 5 may be used in construction / repair work.

10 tethering device 12 first tether 12a, 12b elongate member 12a1, 12b1 elongate member rotating end 12a2, 12b2 elongate member free end 14 second tether 14a, 14b elongate member 14a1, 14b1 elongate member rotating end 14a2 , 14b2 Free ends 15a and 15b of the elongated member 16 Crossing prevention member 16 Transverse member 18 Pin joint 19 Fixing device 19a Protective pad 20 Moving lift scaffold 22 Work stage 22a Pinion gear 22b Guide roller 24 Mast 24a Rack 26 Linking stay

Claims (6)

A connecting device for truss-type steel tower construction and repair work,
One end of the elongate member is rotatably attached to the transverse member, with one end disposed substantially perpendicular to the elongate member, and the other end. A first tether with a free end;
Located adjacent to the first tether, is composed of one or more elongate members, one end is rotatably attached to the transverse member via a pin connector, and the other end is free A second tether at the end,
A fixture for fixing the free ends of the first and second connecting members to desired members of the truss tower,
The transverse member is attached to a predetermined position of the scaffold, and the free ends of the first and second connecting members are selectively fixed to or unlocked from a desired member of the truss tower by the fixing tool. A wall connecting device characterized by being configured.   The one end of the elongate member constituting the first tether can be removed from the transverse member, and the one end of the elongate member constituting the second tether is 2. The wall joining apparatus according to claim 1, wherein the wall joining apparatus is configured to be removable from the cross member. A connecting device for truss-type steel tower construction and repair work,
A first binder composed of one or more elongated members, one end of which is rotatably attached to a predetermined position of the scaffold via a pin connector, and the other end is a free end;
Located adjacent to the first tether, is composed of one or more elongate members, one end is rotatably attached to a predetermined location of the scaffold via a pin connector, and the other end A second tether with a free end,
A fixture for fixing the free ends of the first and second connecting members to desired members of the truss tower,
A wall joint characterized in that the free ends of the first and second joint members are configured to be selectively secured to or unlocked from a desired member of a truss tower by the fixture. apparatus.   Attachment of the first tie material and the second tie material to the predetermined part of the cross member or the scaffold can be rotated in a vertical direction, a horizontal direction, a diagonally upward direction, or a diagonally downward direction. The tethering device according to any one of claims 1 to 3, characterized in that:   The truss tower is any one of a radio tower, a transmission tower, a supporting tower for various antennas, a chimney supporting tower, a meteorological observation tower, and a fire fighting tower. A tethering device described in any one of the above. A construction / repair method for a truss-type steel tower using a movable lifting scaffold using the tethering device according to any one of claims 1 to 5,
A first stage of preparing a working stage as a scaffold for raising and lowering, and a movable lifting scaffold having a mast as a guide rail when the working stage ascends and descends;
A second stage of raising the working stage and connecting the mast and a desired member of the tower via the connecting device at a predetermined height to the vicinity of the upper end of the tower,
A third stage in which construction work or repair work is performed by sequentially raising the work stage from below the truss tower to near the upper end;
A fourth stage in which the free ends of the first and second connecting members are selectively fixed to or unlocked from a desired member of a truss tower by the fixing tool, and the operation is performed.
A fifth stage of lowering the working stage to the ground while sequentially removing the connecting device and the mast after the work is completed;
A method comprising the steps of:

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