JPH09177306A - Scaffolding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent as far as possible a work rack from moving rockingly in the lateral direction even when a crane post is subjected to bending deformation in a scaffolding which uses a crane post. SOLUTION: A scaffolding device 9 is used when piers 2 are constructed upward one after another by using a tower crane 5, which comprises a post 6 erected extendingly in the vertical direction and a crane main body 7 set up on the post 6. A shaft main body 16 is provided so that it may rise freely in the vertical direction along the shaft 6. A lock/lift device 11 is provided on the shat main body 16 by way of the post 6 while the shaft main body 16 is provided on the post 6 so that they may be locked and lifted up and down freely. A clearance space 17 is formed between the shaft 16 and the post 6 where a floor board 20b or a floor board material 21a are provided on the shaft main body 16 so that they may be laid out at a position equivalent to a construction site of the piers 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scaffolding device suitable for use in constructing tower-like structures such as bridge piers.

[0002]

2. Description of the Related Art Conventionally, in constructing tower-like structures such as bridge piers, scaffolds have been installed for arranging the tower-like structures and for installing / disassembling formwork or placing concrete. In addition, construction sites such as bar arrangement, formwork installation / demolition, concrete placement, etc. of tower-shaped structures are arranged along the tower-shaped structures in the order of sequentially building the tower-shaped structures upward. And move upwards. Therefore, it takes a lot of time and labor to move the constructional scaffolding supported on the ground and the like to the upper part of the construction site and to successively extend the part upward. Therefore, recently, a mobile scaffold that is vertically movable along a tower-shaped structure to be constructed is used.
As the movable scaffold, for example, a supporting post is erected in the vicinity of a tower-like structure to be constructed, and a work platform on which a work scaffold is formed is supported so as to be vertically movable along the post. There are things.

[0003]

When constructing a tower-like structure such as a bridge pier, a tower crane or the like is generally used for hoisting materials. Therefore,
By also using the crane post of the tower crane as a post for supporting the work platform described above,
It is conceivable to save parts. However, since the crane post bends and deforms due to the load when hoisting materials and the like, if the work post is supported by the crane post, the work post may move laterally as the crane post bends and deforms. Is expected, and it is not convenient because the work platform collides with the tower structure. Therefore, in a scaffolding device in which the crane post of the tower crane is also used as a post for supporting the work platform, even if the crane post is bent and deformed, the work platform is prevented from swinging laterally as much as possible. A convenient and convenient scaffolding device is desired.

In view of the above circumstances, the present invention provides a scaffolding device in which a crane post of a tower crane is also used as a post for supporting a work platform, even if the crane post is bent and deformed. An object of the present invention is to provide a convenient scaffolding device capable of preventing lateral swinging movement as much as possible.

[0005]

That is, the first aspect of the present invention is to provide a crane post (6, 43, 63) vertically extended and the crane post (6, 4).
Crane body (7, 45, 6) installed on
A scaffolding device (9, 46, 6) used when sequentially constructing tower-like structures (2, 40, 60) upward using a crane unit (5, 42, 62) composed of 5).
6), the column members (16, 47, 67) are provided so as to be vertically movable along the crane posts (6, 43, 63), and are locked to the column members (16, 47, 67). The elevating means (11, 49, 69) is connected to the pillar member (1) via the crane post (6, 43, 63).
6, 47, 67) to the crane posts (6, 43, 6)
3) It is provided so that it can be locked and lifted up and down with respect to
6, 47, 67) and the crane post (6, 43, 6)
A work platform having post-bending permissible gaps (17, 50, 70) formed between (3) and work scaffolds (20b, 21a, 51b, 53a, 71b) on the column members (16, 47, 67). The unit (18, 54, 73) is constructed with the working scaffolds (20b, 21a, 51b, 53a, 71b) at the construction sites (25, 5) of the tower-like structure (2, 40, 60).
5, 75).

A second aspect of the present invention is the scaffolding device (9, 46, 66) of the first aspect, wherein the locking / elevating means (11, 49, 69) is the support member (16,
47, 67).

A third aspect of the present invention is the scaffolding device (9, 46, 66) of the first aspect, wherein the column members (16, 47, 67) are the crane posts (6, 4).
3, 63) is formed in a cylindrical shape that surrounds the lateral sides of (3, 63).

A fourth aspect of the invention is the scaffolding device (9, 46, 66) of the first aspect, wherein the work platform unit (18, 54, 73) is the column member (1).
6, 47, 67) and the strut members (16, 47, 67)
Side connecting members (19,
52, 72) and the side connecting members (19, 52, 7)
2) has a work platform (20, 51, 71) suspended from the work scaffold (20b, 51b, 71b),
It is formed on the work platform (20, 51, 71).

A fifth aspect of the invention is the scaffolding device (9, 46, 66) according to the fourth aspect, wherein the side connecting members (19, 52, 72) are arranged at a predetermined interval (L1). It is composed of a plurality of plate-shaped members (19a, 52a, 72a) arranged, and the plate-shaped members (19a, 52a, 72a) are
The plate-shaped members (19a, 52a, 72a) are arranged in such a manner that the longitudinal direction of their cross sections is oriented vertically.

Note that the numbers in parentheses are for convenience of indicating corresponding elements in the drawings, and therefore, the present description is not limited to the descriptions on the drawings. The same applies to the following “action” column.

[0011]

According to the first aspect of the present invention having the above-described structure, the portion of the crane post (6, 43, 63) that is bent and deformed at a position corresponding to the post bending allowable gap (17, 50, 70). Is the post bending allowable gap (17,
It is possible to avoid displacement of the column members (50, 70) due to bending deformation to press the column members (16, 47, 67) laterally or the like.

Further, in the second aspect of the invention, the locking / elevating means (11, 49, 69) includes the crane posts (6, 4).
3, 63) is located as low as possible.

According to the third aspect of the invention, the horizontal cross-sectional area of the strut members (16, 47, 67) is set as large as possible, and the strength of the strut members (16, 47, 67) is improved as much as possible.

Further, in the fourth aspect of the invention, since it is provided via the side connecting members (19, 52, 72),
The work platform (20, 51, 71) is a crane post (6,
43, 63) can be reached.

In the fifth aspect of the invention, the plate-like member (19a, 52) of the side connecting member (19, 52, 72) is used.
The gap between a and 72a) is as wide as possible.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a side sectional view showing an example of a scaffolding device according to the present invention, FIG. 2 is a sectional view taken along line X1-Y1 of FIG. 1, FIG. 3 is a sectional view taken along line X2-Y2 of FIG. 1, and FIG. FIG. 5 is a sectional side view showing another example of the scaffolding device according to the present invention, FIG.
FIG. 6 is a side sectional view showing another example of the scaffolding device according to the present invention, and FIG. 7 is a sectional view taken along line X4-Y4 of FIG.

At the construction site 1 of the pier, as shown in FIG. 1, a pier 2 being constructed is erected. That is, the pier 2 being constructed has a foundation (not shown) embedded in the ground (not shown), and the pier main body 3 made of reinforced concrete which is being constructed is erected upright on the foundation. It is set up. As shown in FIGS. 1 and 3, the pier main body 3 is formed in a tubular shape having a hollow internal space 3a formed therein, and the horizontal cross section of the pier main body 3 is substantially square. On the other hand, at the construction site 1, as shown in FIG. 1, a known tower crane 5 is installed. Tower crane 5
Has a supporting post 6 which is erected on the foundation (not shown) and which extends the internal space 3a of the pier body 3 upward. The upper end side of the post 6 is constructed. It projects further upward than the upper construction end 3b of the pier main body 3 inside.
A predetermined crane body 7 is supported on the upper end side of the post 6. The crane body 7 has a publicly-known locking / elevating device (not shown), and is supported by the post 6 via the locking / elevating device so that the post 6 can be locked or lifted up and down. . Between the post 6 and the pier main body 3, a connection member 6a, which is a wall connection for connecting and fixing the two, is appropriately installed.

A scaffolding device 9 according to the present invention is installed on the pier 2 being constructed. As shown in FIGS. 1 and 3, the scaffolding device 9 includes a shaft 1 supported by the post 6.
0, the shaft 10 can be locked to the post 6 and can move the post 6 up and down. Therefore, the known lock used in a conventional tower crane or the like.
It has a locking / lifting device 11 similar to the lifting device. In the present embodiment, the locking / elevating device 11 is arranged along the post 6 and is capable of locking / unlocking the first locking device 12 and the first locking device 12. Above the post 6
A second locking device 13 disposed along the first locking device 13 and capable of locking / unlocking the post 6, and the first locking device 12 and the second locking device 13.
A plurality of hydraulic actuators 15 are installed between the locking devices 13 such that the first locking device 12 and the second locking device 13 are connected to each other. These actuators 15 are
For example, the cylinder side is fixed to the second locking device 13 and the ram tip side is fixed to the first locking device 12, and the ram is arranged so as to project and retract in the vertical direction with respect to the cylinder. That is, the locking / elevating device 11 is configured such that the first locking machine 12 or the second locking machine 13 or both of the first locking machine 12 and the second locking machine 13 are locked to the post 6. , The post 6 is locked. Also, the first locking machine 12
To the post 6, and the second locking machine 13 to the post 6
, The actuator 15 is driven (that is, the ram is projected relative to the cylinder) to move the second locking device 13 further upward with respect to the first locking device 12 and move. After that, the second locking device 13 is locked to the post 6, the first locking device 12 is unlocked from the post 6, and the actuator 15 is driven (that is, the ram is retracted with respect to the cylinder). The first locking device 12 is moved upward with respect to the second locking device 13 so that the first locking device 12 is moved up along the post 6 (note that in order to lower the position along the post 6, , The second locking device 13 is locked to the post 6, and the first locking device 12 is unlocked from the post 6, and the actuator 15 is driven to move the first locking device 12 to the second locking device. Stop 1
3 downwardly, and after the movement, the first locking device 1
2 is locked to the post 6, the second locking device 13 is unlocked from the post 6, and the actuator 15 is driven to move the second locking device 13 downward with respect to the first locking device 12. I will let you. ).

As shown in FIGS. 1 and 3, the shaft 10 has a cylindrical shape (in FIG. 3, the cross section is substantially square) that extends vertically and surrounds the lateral periphery of the post 6. The shaft main body 16 formed in the shape of (1) is vertically movable along the post 6. The lower part of the shaft body 16 is provided with the second part of the locking / lifting device 11.
It is integrally joined to the upper part of the locking machine 13. That is, the locking / elevating device 11 can lock / raise the shaft body 16 with respect to the post 6 via the post 6. Further, a predetermined clearance space 17 is formed between the shaft body 16 and the post 6. In the shaft 10 thus configured, the upper end side of the shaft main body 16 is arranged so as to project above the building upper end 3b of the pier main body 3.

A work frame unit 18 is provided on the shaft body 16. Work stand unit 18
1 has a plurality of horizontal beam members 19 (one each in front, rear, left, and right in FIG. 2) as shown in FIGS. 1 and 2, and each beam member 19 near the upper end of the shaft body 16 The end portions of the beam member 19 are fixedly connected to the outer side portion of the shaft body 16, and are thus provided radially in the form of a cantilever. Each beam member 19 is composed of a plurality of plate-shaped members 19a made of a steel plate or the like arranged at a predetermined interval L1, and each plate-shaped member 19a has a longitudinal direction of a cross section of the plate-shaped member 19a in the vertical direction. It is arranged in the shape of. Therefore, each plate-shaped member 19a is as strong as possible against the force acting in the vertical direction, the thickness of the horizontal cross section is as small as possible, and the gap between the plate-shaped members 19a, 19a is made as wide as possible. . The tip side of each beam member 19 is the pier body 3
Project further outward than the outer peripheral side. That is, each beam member 19 is arranged so as to cross the construction upper end 3b of the pier main body 3.

An outer circumference work platform 20 is vertically provided on the tip ends of the plurality of beam members 19. In the present embodiment, the outer peripheral work platform 20 is a pipe assembly structure formed by assembling a plurality of column members 20a and a plurality of beam members (not shown) made of steel pipe material or the like, and a plurality of work scaffolds as work scaffolds. The horizontal floor boards 20b are installed and formed in multiple layers, and the shape of the outer periphery work platform 20 is substantially aligned with the outer periphery of the pier body 3. That is, the outer peripheral work platform 20 faces the outer peripheral surface side of the pier main body 3 in the vicinity of the construction upper end 3b of the pier main body 3, that is, in the construction part 25 for performing work such as reinforcement, formwork installation / demolition, and concrete placing. A plurality of floorboards 20 which are arranged along the outer peripheral surface and are therefore work scaffolds.
b is arranged corresponding to the construction site 25. Further, the work platform unit 18 also has an inner work platform 21. As shown in FIGS. 1 and 3, the inner work platform 21 includes a plurality of horizontal floor boards 21 a, which are work scaffolds, and a shaft body 16
The floor board 21a has a shape joined to the outer peripheral side of the
Is a shape projecting to the side of the shaft main body 16, and therefore, in the construction site 25 near the construction upper end 3b of the pier main body 3,
It is arranged so as to face the inner peripheral surface side of the pier body 3.
The plurality of floor board materials 21a are arranged in a multilayer structure.

Further, as shown in FIGS. 1 and 2, a flat plate-shaped deck member 22 is installed on the plurality of beam members 19, and the deck member 22 is provided with posts at positions corresponding to the posts 6. A hole 22a is provided. In other words, post 6
Is vertically penetrating the deck member 22 through the post holes 22a. The shape and size of the post hole 22a are substantially the same as the shape and size of the horizontal cross section inside the shaft body 16. It should be noted that a plurality of main bars 30 extending in the up-down direction for building a skeleton further above the pier main body 3 project upward from the building upper end 3b of the pier main body 3 under construction. The member 22 is vertically penetrated. That is, the deck member 22 is provided at a position corresponding to the main bars 30.
A main bar hole 23 having a shape penetrating vertically through 2 is provided.
The main reinforcement hole 23 is formed in a size that allows the main reinforcement 30 and the connecting coupler 30a attached to the main reinforcement 30 to pass therethrough.

Since the pier 2 and the scaffolding device 9 under construction are constructed as described above, the work such as the reinforcement of the pier body 3, the installation and dismantling of the formwork, the concrete placing, that is, the pier body 3
When performing work to be performed on the construction site 25 near the construction upper end 3b, the scaffolding device 9 is moved upward through the locking / elevating device 11 of the scaffolding device 9, and the outer circumference work platform 20 and the inner circumference work are performed. The gantry 21 is arranged at the construction site 25 of the pier main body 3, and the work is performed through the outer circumference work gantry 20 and the inner circumference work gantry 21. In addition, as the pier main body 3 is sequentially constructed upward, the construction site 25, which is a work position for reinforcing bars, formwork installation / demolition, and concrete placement, is sequentially moved upward. In this case, in this case, the locking / elevating device 11 moves the scaffolding device 9 further upward with respect to the post 6 via the post 6 to move the outer peripheral work platform 20 and the inside. The peripheral work platform 21 is arranged so as to correspond to the construction site 25 that has been moved upward, and the work in the construction site 25 is performed via the outer circumference work platform 20 and the inner circumference work platform 21.

By the way, when the material is lifted by the crane body 7, the post 6 is bent and deformed by the load as shown by the chain double-dashed line in FIG. However, since the clearance space 17 which is a post bending allowable gap is formed between the shaft body 16 and the post 6, a portion of the post 6 that is bent and deformed at a position corresponding to the shaft body 16 has the clearance. It is avoided as much as possible that the shaft body 16 is laterally pressed by performing displacement due to bending deformation in the space 17. Therefore, even if the post 6 is bent and deformed, the shaft main body 16 is not affected by the displacement in a position above the locking / elevating device 11 such that the shaft body 16 is laterally pressed. That is, the lateral movement of the outer peripheral work platform 20 and the inner peripheral work platform 21 is prevented as much as possible due to the bending deformation of the post 6, and the outer peripheral work platform 20 and the inner peripheral work platform 21 and the pier main body 3 and the like. It is convenient because there is no collision. Particularly, in this embodiment, as shown in FIG.
Among them, the locking / elevating device 11 is arranged at a position slightly above the portion connected to the pier main body 3 by the connecting member 6a (that is, at a position as close as possible to the connecting member 6a). It is known that the portion of the post 6 that is connected to the pier main body 3 by the connecting member 6a hardly causes the bending deformation as described above, and thus the portion that is arranged slightly above the portion. It is convenient that the stopping / elevating device 11 is hardly affected by the bending deformation of the post 6.

Further, the main reinforcement 30 in the up-and-down direction is erected from the upper side of the construction upper end 3b of the pier main body 3 and thus the construction site 55 by installing the main reinforcement 30 (and the coupler 30a attached to the main reinforcement 30) by a crane or the like. The deck members 22 are suspended and lifted, passed through the main reinforcing hole 23 of the deck member 22, and further passed through the gaps between the plurality of plate-shaped members 19a of the beam member 22.
And the beam member 19 is vertically passed through. By the way, each plate-shaped member 19a of the beam member 19 is arranged such that the longitudinal direction of the cross section of the plate-shaped member 19a is directed in the vertical direction as described above, and thus the width of the horizontal cross-section of the plate-shaped member 19a. Is as narrow as possible. That is, the gap between the plate-shaped members 19a is made as wide as possible, and the built-in main bar 30 can smoothly pass through the beam member 19 through the gap made as wide as possible. It is convenient because it can be included smoothly. Further, since the main reinforcement 30 is built in such a manner that it penetrates the main reinforcement hole 23 of the deck member 22, it is possible to position the main reinforcement 30 and prevent it from collapsing after being connected to the existing main reinforcement by passing the main reinforcement hole 23, which is convenient. Good (it should be noted that the portion of the deck member 22 where the main hole 23 is formed may be a removable plate member).

In addition, the deck member 2 is attached to the scaffolding device 9 described above.
By providing 2, the entry of wind and rain into the building site 55 and the like is prevented as much as possible. That is, the deck member 22 has a weatherproof roof function in the scaffolding device 9. Further, the scaffolding device 9 has a shaft 10 as a main structure.
It is easy to divert because it has become. Further, since the crane is not installed on the work platform or the like, it is convenient because the crane itself is not loaded on the work platform or the like. Also, the scaffolding device 9
Since the construction part 55 is surrounded by the deck member 22 and the outer peripheral work platform 20, the measures against cold are effectively taken, and the work during cold is not hindered. Especially in winter,
It facilitates curing of difficult-to-manage concrete and enables concrete pouring during cold weather.

Next, another embodiment will be described. For example, at the construction site of the pier, as shown in FIG. 4, a pier 40 under construction is erected. That is, the pier 40 under construction has a foundation (not shown) embedded in the ground (not shown), and the pier main body 41 made of reinforced concrete which is under construction is erected in an upward direction in the foundation. It is set up. Pier body 4
As shown in FIGS. 4 and 5, 1 has a spectacle-shaped cross section in which two hollow internal spaces 41a, 41a are formed in parallel with each other and vertically extended.
On the other hand, a known tower crane 42 is installed at the construction site as shown in FIG. Tower crane 42
Has a supporting post 43 which is vertically supported on the foundation (not shown) and which extends one internal space 41a of the pier main body 41 (the right side in the drawing in the drawing) upward. The upper end side of the post 43 projects further upward than the building upper end 41b of the pier main body 41 under building. A predetermined crane body 45 is supported on the upper end side of the post 43. The crane main body 45 has a publicly-known locking / elevating device (not shown), and is supported by the post 43 via the locking / elevating device so as to be freely lockable or vertically movable. . In addition, the other internal space 41a of the pier main body 41
A support post 44 similar to the above-described post 43 is also provided (on the left side of the paper in the drawing), and the support post 44 is erected and supported on the foundation (not shown).

A scaffolding device 46 according to the present invention is installed on the pier 40 being constructed. The scaffolding device 46 is shown in FIG.
Further, as shown in FIG. 5, it has shafts 48 and 48 supported by the post 43 and the support post 44, respectively, and each shaft 48 is similar to the shaft 10 described above in the post 43 or the support post 44. On the other hand, it has a locking / lifting device 49 that can be locked / lifted. In addition, as shown in FIGS. 4 and 5, each of the shafts 48 has a shape extending in the vertical direction, and the post 43 or the support post 44.
A shaft main body 47, which is formed in a tubular shape so as to surround the lateral periphery of, is vertically movable along the posts 43 or the support posts 44. In addition, each lock
The lifting device 49 is connected to the lower portion of each shaft body 47, and each locking / lifting device 49 is connected to each shaft body 47.
Via the post 43 or the support post 44, the post 43 or the support post 44 can be locked and moved up and down with respect to the post 43 or the support post 44. Further, a predetermined clearance space 5 is provided between each shaft body 47 and the post 43 or the support post 44.
0 is formed.

A work frame unit 54 is provided on the two shaft bodies 47, 47. As shown in FIGS. 4 and 5, the work platform unit 54 has a plurality of horizontal beam members 52, and each beam member 52 is located near the upper end of each shaft body 47.
It is provided in a form of connecting between 47 or in a form of radially projecting from each shaft main body 47 in the form of a cantilever. Each beam member 52 is composed of a plurality of plate-shaped members 52a made of a steel plate or the like arranged at a predetermined interval L1, and each plate-shaped member 52a has a longitudinal direction of a cross section of the plate-shaped member 52a in the vertical direction. It is arranged in the shape of. Each beam member 52 is arranged so as to cross the construction upper end 41b of the pier main body 41.

Of the plurality of beam members 52, the outer peripheral work platform 5 is provided at the tip end side of the beam member 52 which is provided so as to radially project from each shaft body 47 in the form of a cantilever.
1 is installed vertically. In the present embodiment, the outer circumference work platform 51
Is a pipe assembly structure formed by assembling a plurality of pillar members and a plurality of beam members (not shown) made of a steel pipe material, etc., and installing a plurality of horizontal floor boards 51b, which are work scaffolds, in a multilayer form. The outer work platform 51 has a shape corresponding to the outer periphery of the pier body 41.
That is, the outer periphery work platform 51 is the upper end 41 of the pier body 41.
In the vicinity of b, that is, the pier main body 41 among the construction parts 55 that perform work such as reinforcement, formwork installation / demolition, and concrete placement
Are arranged along the outer peripheral surface so as to be opposed to the outer peripheral surface side, and accordingly, the plurality of floor boards 51b which are work scaffolds are arranged corresponding to the construction site 55. Further, the work platform unit 54 has one inner work platform 53, one for each shaft body 47. As shown in FIGS. 4 and 5, each of the inner work platforms 53 has a plurality of horizontal floor boards 53a, which are work scaffolds, joined to the outer peripheral side of the corresponding shaft body 47 and the like. , The floor plate material 53a is projected to the side of the shaft main body 47, and accordingly, the pier main body 41a
Of the construction site 55 near the construction upper end 41b, the inner surface facing each internal space 41a of the pier main body 41 is disposed so as to face the inner circumferential surface side. The plurality of floor board members 53a are arranged in a multi-layered manner.

As shown in FIGS. 4 and 5, a flat plate-shaped deck member 56 is installed on the plurality of beam members 52, and the deck member 56 corresponds to the posts 43 and the support posts 44. Post holes 56a and 56a are provided at the positions. That is, the post 43 and the support post 44 are in a state of vertically penetrating the deck member 56 via the post holes 56a, 56a. It should be noted that a plurality of vertically extending main bars 30 for constructing a skeleton further above the pier body 41 are projected upward from the building upper end 41b of the pier body 41 being built.
Penetrate vertically through the deck member 56. That is, the deck member 56 is provided with the main-reinforcing holes 57 at positions corresponding to the main rebars 30 so as to vertically penetrate the deck member 56.

Since the pier 40 and the scaffolding device 46 being constructed are constructed as described above, the work such as the arrangement of the pier body 41, the formwork installation / demolition, and the concrete placement, that is, the upper end of the pier body 41 construction When performing the work to be performed on the construction site 55 near 41b, the locking / lifting device 4 for the scaffolding device 46 is performed.
The scaffolding device 46 is moved upward through 9, 49 to dispose the outer circumference work platform 51 and the inner circumference work platform 53, 53 at the construction site 55 of the pier body 41, and the outer circumference work platform 51 and the inner circumference work. The work is carried out via the pedestals 53, 53. In addition, as the pier main body 41 is gradually constructed upward, reinforcement arrangement, formwork installation / demolition,
The construction site 55, which is a work position for concrete pouring and the like, is sequentially moved upward. In this case, the locking / elevating devices 49, 49 are used to interpose the post 43 and the support post 44. Then, the scaffolding device 46 is further moved up with respect to the post 43 and the support post 44, so that the outer circumference work platform 51 and the inner circumference work platform 53, 5
3 is arranged so as to correspond to the construction site 55 transferred to the upper side, and the work in the construction site 55 is performed via the outer circumference work platform 51 and the inner circumference work platforms 53, 53.

By the way, the post 43 is the crane body 45.
When materials etc. are lifted by the
Bending deformation occurs as shown by the chain double-dashed line. However, since the clearance space 50 which is the post bending allowable gap is formed between the shaft body 47 and the post 43,
The portion of the post 43 that is bent and deformed at a position corresponding to the shaft body 47 is displaced by bending and deformation in the clearance space 50, and it is possible to avoid pressing the shaft body 47 laterally or the like as much as possible. ing. Therefore, even if the post 43 is bent and deformed, the shaft main body 47 is not affected by the displacement in a position above the locking / elevating device 49 in the lateral direction as much as possible. In other words, the outer peripheral work platform 51 and the inner peripheral work platforms 53, 53 are prevented from swinging and moving in the lateral direction as much as possible due to the bending deformation of the post 43. This is convenient because the pier body 41 and the like do not collide.

Another embodiment will be described. For example, at the construction site of the pier, as shown in FIG. 6, a pier 60 under construction is erected. That is, the pier 60 under construction has a foundation (not shown) embedded in the ground (not shown), and the pier main body 61 made of reinforced concrete under construction is erected on the foundation in an upright state. It is set up. Pier body 6
As shown in FIGS. 6 and 7, 1 is formed in a rectangular column shape having no hollow portion inside. On the other hand, a known tower crane 62 is installed at the construction site as shown in FIG. The tower crane 62 is erected and supported on the foundation (not shown) and has a supporting post 63 extending upward along the pier main body 61, and an upper end side of the post 63 is Top 6 of the pier main body 61 under construction
It projects further upward than 1b. A predetermined crane body 65 is supported on the upper end side of the post 63. The crane main body 65 has a known locking / elevating device (not shown), and is supported by the post 63 via the locking / elevating device so that the post 63 can be locked or lifted up and down. . In addition, the post 6 described above with the pier body 61 interposed therebetween.
A support post 64, which is similar to the post 63, is provided at a position facing back from the position 3, and the support post 64 is erected and supported on the foundation (not shown).

A scaffolding device 66 according to the present invention is installed on the pier 60 under construction. The scaffolding device 66 is shown in FIG.
As shown in FIG. 7, it has shafts 68, 68 supported by the post 63 and the support post 64, respectively, and each shaft 68 has the shafts 10, 48 described above.
Similarly to the above, it has a locking / elevating device 69 that can lock / raise / lower the post 63 or the support post 64. Further, as shown in FIGS. 6 and 7, each shaft 68 is a shaft main body 67 formed in a tubular shape that extends vertically and surrounds the lateral periphery of the post 63 or the support post 64. Are vertically movable along the posts 63 or the support posts 64. In addition,
Each locking / elevating device 69 is connected to a lower portion of each shaft body 67, and each locking / elevating device 69 connects each shaft body 67 via the post 63 or the support post 64 to the post 63 or Locked to support post 64
It can be raised and lowered. Further, a predetermined clearance space 70 is formed between each shaft body 67 and the post 63 or the support post 64. The shafts 68, 68 configured in this way are arranged such that the upper end side of each shaft body 67 projects upward from the construction upper end 61b of the pier body 61.

A work frame unit 73 is provided on the two shaft bodies 67, 67. As shown in FIGS. 6 and 7, the work platform unit 73 has a plurality of horizontal beam members 72, and each beam member 72 is located near the upper end of each shaft body 67.
It is provided in a form of connecting the 67, or in a form of radially projecting from each shaft body 67 in the form of a cantilever. Each beam member 72 is composed of a plurality of plate-shaped members 72a made of a steel plate or the like arranged at a predetermined interval L1, and each plate-shaped member 72a has a longitudinal direction of a cross section of the plate-shaped member 72a in the vertical direction. It is arranged in the shape of. The beam member 72 connecting the shaft main bodies 67, 67 is the pier main body 6
No. 1 is arranged across the upper building edge 61b.

Out of the plurality of beam members 72, the beam member 72 provided so as to connect the shaft bodies 67 to each other is provided with a peripheral work platform 71 vertically. In the present embodiment, the outer peripheral work platform 71 includes a pipe assembly structure formed by assembling a plurality of column members and a plurality of beam members (not shown) made of a steel pipe material or the like and a plurality of work scaffolds. A horizontal floorboard 71b is installed and formed in multiple layers,
The shape of the outer circumference work platform 71 is a shape substantially corresponding to the outer circumference of the pier main body 61. That is, the outer peripheral work platform 71 faces the outer peripheral surface side of the pier main body 61 in the vicinity of the construction upper end 61b of the pier main body 61, that is, in the construction part 75 for performing work such as reinforcement, formwork installation / demolition, and concrete placing. In the form of,
The plurality of floorboards 71b, which are arranged along the outer peripheral surface and thus are work scaffolds, are arranged corresponding to the construction site 75.

Further, as shown in FIGS. 6 and 7, a flat plate-shaped deck member 76 is installed on the plurality of beam members 72, and the deck member 76 corresponds to the posts 63 and the support posts 64. Post holes 76a and 76a are provided at the positions. That is, the post 63 and the support post 64 are in a state of vertically penetrating the deck member 76 through the post holes 76a and 76a. In addition, above the construction upper end 61b of the pier main body 61 under construction, a main bar (not shown) for constructing a skeleton further above the pier main body 61 is built in a vertically elongated form. Among them, the one corresponding to the deck member 76 penetrates the deck member 76 vertically through a not-shown main reinforcing hole formed in the deck member 76.

Since the pier 60 and the scaffolding device 66 under construction are constructed as described above, the work such as the arrangement of the pier main body 61, the installation and dismantling of the formwork, the concrete placing, that is, the upper end of the pier main body 61 under construction. When performing work performed on the construction site 75 near 61b, the locking / lifting device 6 of the scaffolding device 66 is used.
The scaffolding device 66 is moved upwards via 9 and 69 to dispose the outer peripheral work platform 71 on the construction site 75 of the pier main body 61, and the work is performed through these outer periphery work platforms 71. In addition, as the pier main body 61 is sequentially constructed upward, the construction site 75, which is a work position for reinforcing bars, formwork installation / demolition, and concrete placement, is sequentially moved upward. In this case, in this case, the scaffolding device 66 is attached to the post 6 by the locking / elevating devices 69, 69 via the post 63 and the support post 64.
3 and the support posts 64 are further moved upward to arrange the outer peripheral work platform 71 so as to correspond to the construction site 75 that has been moved upward. Try to do it through.

By the way, the post 63 is the crane body 65.
When materials etc. are lifted up by the
Bending deformation occurs as shown by the chain double-dashed line. However, since the clearance space 70 which is a post bending allowable gap is formed between the shaft body 67 and the post 63,
A portion of the post 63 that is bent and deformed at a position corresponding to the shaft body 67 is displaced by bending and deformation in the clearance space 70, and it is possible to avoid pressing the shaft body 67 laterally or the like as much as possible. ing. Therefore, even if the post 63 is bent and deformed, the shaft main body 67 is not affected by the displacement in the position above the locking / elevating device 69 in the lateral direction. That is, it is convenient that the outer peripheral work platform 71 is prevented from swinging laterally as much as possible due to the bending deformation of the post 63, and the outer peripheral work platform 71 and the pier main body 61 do not collide.

In each of the above-described embodiments, the locking / elevating means such as the locking / elevating devices 11, 49, 69 and the like are arranged below the column members such as the shaft bodies 16, 47, 67. , Locking / elevating means are not limited to the lower part of the column member,
It may be arranged at the central position of the pillar member. However, the post bending allowable gaps such as the clearance spaces 17, 50 and 70 between the column member and the crane posts such as the posts 6, 43 and 63 are effective at the position above the locking / elevating means as described above. Therefore, in order to prevent the effect of bending deformation of the crane post, it is desirable that the locking / elevating means be arranged at the lower part of the column member.

Further, in each of the above-described embodiments, the supporting members such as the shaft bodies 16, 47 and 67 are the posts 6, 43 and 6.
Although it is formed in a cylindrical shape that surrounds the side of the crane post such as 3, the column members are various other members such as vertically extending rod-shaped members arranged in parallel to the side of the crane post. It may be configured. However, the pillar member
Since the horizontal cross-sectional area of the pillar member can be set as large as possible by forming the cylinder post so as to surround the lateral side of the crane post, in order to improve the strength of the pillar member as much as possible, It is desirable to form it into a cylindrical shape that surrounds.

[0043]

As described above, according to the first aspect of the present invention, the posts 6, 43, 6 extending vertically are provided.
A crane pier 2, 40, 60, etc., using a crane unit, such as a tower crane 5, 42, 62, which comprises a crane post 3, etc., and a crane body 7, 45, 65, etc. installed on the crane post. In the scaffolding device used when sequentially building the tower-shaped structure of, the pillar members such as the shaft main bodies 16, 47, 67 are
It is provided so as to be vertically movable along the crane post, and is provided with locking / elevating means such as locking / elevating devices 11, 49, 69, etc. on the column member, and the column member via the crane post. It is provided so that it can be locked and lifted up and down with respect to the crane post, and post bending allowable gaps such as clearance spaces 17, 50 and 70 are formed between the column member and the crane post, and the floor plate 20b, 51b is provided on the column member. 7
1b, work platform units such as work platform units 18, 54, 73 having work platforms such as floor plate materials 21a and 53a, the work platform being the building portions 25, 5 of the tower structure.
Since the tower-shaped structure is constructed in such a manner that it can be arranged correspondingly to the construction site such as 5, 75, etc., the pillar member can be constructed through the crane post by the locking / elevating means in order to construct the tower-like structure. By moving up and down with respect to the post, the pillar member and the work platform unit are arranged so that the work scaffold corresponds to the construction site of the tower-like structure, and the work at the construction site for the tower-like structure, for example, Work such as bar arrangement, formwork installation / demolition, or concrete placement should be performed via the work scaffold. In addition, construction parts such as bar arrangement of tower-like structures, formwork installation / demolition, and concrete placement are
In the procedure of sequentially building the tower-shaped structure upward,
Along the tower-like structure, the pieces are sequentially moved upward.
In this case, the supporting member and the work platform unit are moved upward by the locking / elevating means to move the supporting member upward with respect to the crane post via the crane post. It is arranged so as to correspond to the transferred construction site, and the work in the construction site is performed via the work scaffold. That is, in response to the upward movement of the construction site, the work scaffold is moved upward by moving the strut member and the work platform unit upward, so that the conventional assembly type scaffold is moved upward from the ground. It does not take time and effort to gradually extend it. Further, in the present invention, since the crane post of the crane unit such as the tower crane is also used as the post for supporting the above-mentioned work platform unit, the saving of members is realized. By the way, the crane post is bent and deformed by the load when materials are lifted by the crane body. However, since a post bending allowable gap is formed between the column member and the crane post, the portion of the crane post that has undergone bending deformation at a position corresponding to the post bending allowable gap is within the post bending allowable gap. It is avoided as much as possible to perform displacement due to bending deformation as much as possible and to press the support member laterally. Therefore, even if the crane post is bent and deformed, it is possible to prevent the pillar member from being laterally pressed and moved as much as possible depending on the displacement at a position above the locking / elevating means.
That is, it is convenient that the work platform unit is prevented from swinging and moving in the lateral direction as much as possible due to the bending deformation of the crane post, and the work platform unit and the tower-shaped structure do not collide.

A second invention of the invention is the scaffolding apparatus of the first invention, wherein the locking / elevating means is arranged below the column member. As described above, even if the crane post undergoes bending deformation, it is possible to minimize the influence of the column member being pushed and moved in the lateral direction due to the displacement at a position above the locking / elevating means. In the second aspect of the present invention, the locking / elevating means is arranged at a lower portion of the column member. That is, since the locking / lifting means can be arranged at the lowest position in the crane post, in addition to the effect of the first invention,
The range in which the work platform unit can be prevented from swinging laterally due to the bending deformation of the crane post, that is, the range in which the bending deformation of the crane post occurs is as wide as possible. Therefore, the collision between the work platform unit and the tower-like structure is further prevented, which is convenient.

A third aspect of the present invention is the scaffolding device of the first aspect, wherein the support member is formed in a tubular shape surrounding the lateral side of the crane post, so that the support member is horizontally cut. The area can be set as large as possible. That is, since the strength of the support member is improved as much as possible, it is convenient that the work frame unit or the like is upsized. In addition, the pillar member,
Since it is formed in a tubular shape that surrounds the side of the crane post, it is possible to prevent accidents such as people and things falling into the post bending allowable gap between the column member and the crane post, which is highly safe.

A fourth aspect of the present invention is the scaffolding device of the first aspect, wherein the work platform unit is connected to the support member in the form of a beam member 19 connected to the support member so as to project to the side of the support member. , 52, 72, etc., and an outer peripheral work platform 20, 51, 71 suspended from the side connecting members.
Since the work platform is formed on the work platform, the work platform can reach a position apart from the crane post because the work platform is provided via the side connecting member. It is like this. That is, in addition to the effect of the first invention, the scaffolding device according to the present invention can be used even when the distance between the crane post and the tower-shaped structure is large, for example, about the length of the side connecting member. Can be used, which is convenient. Further, when the size of the tower-shaped structure is such that the side connecting member can cross over the tower-shaped structure, the work platform provided via the side connecting member is Conveniently, it can be arranged on the opposite side of the column-shaped structure, that is, at a position facing the crane post around the tower-shaped structure.

A fifth aspect of the invention is the scaffolding device of the fourth aspect, wherein the side connecting members are a plurality of plate-like members 19a, 52 arranged at a predetermined interval such as the interval L1.
a, 72a, etc., and the plate-shaped member is arranged in such a manner that the longitudinal direction of the cross-section of the plate-shaped member is oriented in the vertical direction, so that it is provided, for example, via a side connection member. The work connection platform is located on the opposite side of the tower-shaped structure, that is, at a position facing the crane post with the tower-shaped structure as the center. In the case of arranging in the above, the main bar or the like in the up-down direction is erected from above with respect to the construction site by passing the main bar through the gap between the plate-shaped members and passing through the side connecting member in the vertical direction. By the way, the plate-shaped members of the side connecting member are arranged such that the longitudinal direction of the cross-section of the plate-shaped member is oriented in the vertical direction, and therefore the width of the horizontal cross-section of the plate-shaped member is as narrow as possible. . That is, in addition to the effect of the fourth invention,
The gap between the plate-like members of the side connecting member is made as wide as possible, and the main reinforcing bar can smoothly pass through the side connecting member through the gap which is made as wide as possible. It is convenient because it can be done smoothly.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an example of a scaffolding device according to the present invention.

FIG. 2 is a sectional view taken along line X1-Y1 of FIG. 1;

FIG. 3 is a sectional view taken along line X2-Y2 of FIG.

FIG. 4 is a side sectional view showing another example of the scaffolding device according to the present invention.

5 is a cross-sectional view taken along line X3-Y3 of FIG.

FIG. 6 is a side sectional view showing another example of the scaffolding device according to the present invention.

FIG. 7 is a sectional view taken along line X4-Y4 of FIG. 6;

[Explanation of symbols]

 2 ... Tower structure (bridge pier) 5 ... Crane unit (tower crane) 6 ... Crane post (post) 7 ... Crane body 9 ... Scaffolding device 11 ... Locking / lifting means (locking / lifting) Device) 16 ... Support member (shaft body) 17 ... Post bending allowable gap (clearance space) 18 ... Work cradle unit 19 ... Side connection member (beam member) 19a ... Plate member 20 ... Work cradle (Outer peripheral work platform) 20b …… Work scaffold (floor board) 21a …… Work scaffold (floor board material) 25 …… Building site 40 …… Tower structure (pier) 42 …… Crane unit (tower crane) 43 …… Crane Post (post) 45 …… Crane body 46 …… Scaffolding device 47 …… Post member (shaft body) 49 …… Locking / elevating means (locking / elevating device) 50 …… Post bending allowance gap (Clearance space) 51 ... Work platform (peripheral work platform) 51b ... Work scaffold (floor board) 52 ... Side connection member (beam member) 52a ... Plate-like member 53a ... Work scaffold (floor board) 54 ... … Work platform unit 55 …… Construction part 60 …… Tower structure (pier) 62 …… Crane unit (Tower crane) 63 …… Crane post (post) 65 …… Crane body 66 …… Scaffing device 67 …… Support Member (shaft body) 69 ... Locking / lifting means (locking / lifting device) 70 ... Post bending allowable gap (clearance space) 71 ... Work platform (peripheral work platform) 71b ... Work scaffold (floor plate) 72 ...... Side connection member (beam member) 72a ...... Plate member 73 ...... Work platform unit 75 ...... Construction site L1 ...... Interval

Claims (5)

[Claims] 1. When a tower-shaped structure is sequentially constructed upward using a crane unit including a crane post vertically extended and a crane main body installed on the crane post. In the scaffolding device used for, a column member is provided so as to be vertically movable along the crane post, and locking / elevating means is attached to the column member, and the column member is attached to the crane member via the crane post. A post bending allowable gap is formed between the post member and the crane post, and the work platform unit is provided with a work scaffolding on the post member. A scaffolding device provided so as to be arranged corresponding to a construction site of a tower-like structure. 2. The scaffolding device according to claim 1, wherein the locking / elevating means is arranged at a lower portion of the column member. 3. The scaffolding device according to claim 1, wherein the pillar member is formed in a tubular shape that surrounds a lateral side of the crane post. 4. The work cradle unit has a side connection member connected to the support member in such a manner as to project to the side of the support member, and a work mount vertically installed on the side connection member. The scaffolding device according to claim 1, wherein the work scaffold is formed on the work platform. 5. The side connecting member is composed of a plurality of plate-shaped members arranged at a predetermined interval, and the plate-shaped member has a shape in which a longitudinal direction of a cross section of the plate-shaped member is directed vertically. The scaffolding device according to claim 4, wherein the scaffolding device is arranged.