JP6728602B2 - Scaffold lifting device and construction method - Google Patents

Description

The present invention relates to a scaffold lifting device used for construction of a structure, and a construction method for a structure.

When a building is repaired as an example of a structure, a scaffold such as a frame scaffold is usually provided on the side of the building so as to be immovable over all floors of the building (Patent Document 1).

JP-A-5-25928

On the other hand, instead of this scaffold, a work stage member that moves up and down may be provided on the side of the building, and the work stage member may be moved to each floor of the building to repair each floor.

However, with this work stage member, only its upper surface can be used as a work floor. Therefore, when repairing, the work stage member must be moved to all floors, and the number of movements of the work stage member increases, which may lead to a longer construction period. In particular, when the building to be renovated is a high-rise building with a large number of floors, a long construction period becomes a serious problem.

In this regard, if a scaffold is placed on the work stage member, for example, the scaffold can be used as a work floor above the work stage member in addition to the top surface of the work stage member. As a result, repair work on a plurality of floors can be performed at the same time, and as a result, the construction period can be shortened by reducing the number of movements of the work stage member.

However, if such a scaffold is placed, the scaffold on the work stage member sways in a horizontal direction intersecting the vertical direction when the work stage member is lifted and lowered, and as a result, the lifting and lowering operation of the work stage member is stabilized. It becomes difficult to do it.

The present invention has been made in view of the above conventional problems, and an object thereof is to be placed and supported on a work stage member that is provided on a side of a structure such as a building and that is vertically moved up and down. It is intended to suppress the sway of the scaffolding and stabilize the up-and-down movement of the work stage member.

In order to achieve such an object, the invention shown in claim 1 is
A lifting device for vertically moving a scaffold provided on a side of a structure,
A work stage member that moves up and down in the vertical direction while mounting and supporting the scaffold,
While extending along the up-down direction, a rail member that is immovably fixed to the structure until the construction using the scaffold is completed,
A moving member fixed to the scaffold, the moving member engaging with the rail member so as to be allowed to move in the vertical direction while restricting movement in an intersecting direction intersecting with the vertical direction,
Erect on the ground, comprising a mast member extending along the vertical direction,
The work stage member is supported by the mast member and moves up and down in the vertical direction,
The scaffold lifting device , wherein the rail member is a member different from the mast member .

According to the invention as set forth in claim 1, since the moving member is fixed to the scaffold, the scaffold is also allowed to move in the vertical direction, but is restricted from moving in the crossing direction intersecting with the vertical direction. ing. Therefore, it is possible to suppress the swinging of the scaffold in the above-described crossing direction that may occur due to the lifting/lowering operation of the work stage member, and as a result, the lifting/lowering operation of the work stage member can be stabilized.

The invention shown in claim 2 is the scaffold lifting device according to claim 1,
The rail member has a pair of channel steels provided with the longitudinal direction along the vertical direction while facing each other's groove portions,
A part of the moving member is accommodated in the space extending in the vertical direction by the pair of channel steels so as to be movable in the vertical direction.

According to the invention described in claim 2, the rail member has a pair of channel steels. Then, a part of the moving member is housed in a space defined by the pair of channel steels and extending in the vertical direction, whereby the moving member is engaged with the rail member so as to be vertically movable. doing. Therefore, it is possible to reliably perform the vertical movement while restricting the movement of the moving member in the intersecting direction, and as a result, the shaking of the scaffold fixed to the moving member in the intersecting direction can be prevented. It can be surely suppressed.
Further, since the rail member is formed of a channel steel, which is a very general steel material, the cost of the lifting device can be reduced.

The invention shown in claim 3 is the scaffolding lifting device according to claim 1,
The rail member has an H-shaped steel provided with its longitudinal direction along the vertical direction,
One of the pair of flanges of the H-section steel is fixed to the structure, and the other member is engaged with the moving member in the vertical direction. Is characterized by.

According to the invention described in claim 3, the rail member has H-section steel. Then, one of the pair of flanges of the H-section steel is fixed to the structure, and the moving member is engaged with the other flange so as to be vertically movable. Therefore, it is possible to reliably perform the vertical movement while restricting the movement of the moving member in the intersecting direction, and as a result, the shaking of the scaffold fixed to the moving member in the intersecting direction can be prevented. It can be surely suppressed.
Further, since the rail member is made of H-shaped steel, which is a very general steel material, the cost of the lifting device can be reduced.

The invention shown in claim 4 is the scaffolding lifting device according to any one of claims 1 to 3,
The moving member has a roller rotatably supported, and the moving member is engaged with the rail member by the roller rolling on the rail member.

According to the invention described in claim 4, the moving member is engaged with the rail member via the roller rolling on the rail member. Therefore, the moving member can stably move in the vertical direction without being caught by the rail member.

The invention shown in claim 5 is the scaffold lifting device according to any one of claims 1 to 4,
The moving member has an elastically deformable portion that elastically deforms in the intersecting direction.

According to the invention described in claim 5, when an excessive force in the crossing direction is applied from the rail member to the moving member that moves in the vertical direction, the elastically deformed portion quickly moves in the crossing direction. Elastically deforms. Thus, the moving member can escape in the direction in which the force is reduced, and as a result, the moving member can avoid a movement failure such as being caught by the rail member.

The invention according to claim 6 is the scaffold lifting device according to any one of claims 1 to 5,
When the scaffold is divided into an upper half portion and a lower half portion in the vertical direction, the moving member is fixed to the upper half portion.

According to the invention described in claim 6, the moving member is fixed to the upper half of the scaffold. Therefore, the swing of the scaffold in the cross direction can be suppressed in the upper half portion where the swing tends to be larger than that in the lower half portion, and as a result, the swing of the scaffold can be effectively suppressed as a whole.

The invention shown in claim 7 is the scaffold lifting device according to any one of claims 1 to 6 ,
The scaffold is a frame scaffold,
In the frame scaffolding, a plurality of building frames are stacked in the vertical direction, and a tread plate is provided in each of the plurality of building frames, and a plurality of the tread plates are arranged in the vertical direction. Is characterized by.

According to the invention as set forth in claim 7 , the scaffold has a plurality of treads arranged vertically. Therefore, it is possible to increase the work floor upward by the amount corresponding to the plurality of treads, thereby increasing the number of positions in the vertical direction that can be simultaneously constructed in the structure. As a result, the number of movements of the work stage member can be reduced, and the construction period can be shortened.

The invention shown in claim 8 is the scaffold lifting device according to any one of claims 1 to 7 ,
The rail member is fixed to a plurality of fixing target portions arranged in the vertical direction in the structure,
When the direction along the outer wall surface of the structure in the crossing direction is the left-right direction, and when the direction orthogonal to the left-right direction is the front-back direction,
One fixing target portion of the plurality of fixing target portions is projected in the front-back direction than another fixing target portion,
A plate member is provided in the other fixing target portion so as to fill the gap in the front-rear direction generated between the rail member and the rail member.

According to the invention described in claim 8 , the rail member is fixed to the other fixing target portion in a state where the gap between the rail member and the other fixing target portion is filled with the plate member. Therefore, it is possible to firmly fix the rail member to the structure while keeping the rail member parallel to the vertical direction.

The invention shown in claim 9 is the scaffolding lifting device according to any one of claims 1 to 8 ,
The structure is a multi-storey building,
No matter which floor of the plurality of floors the work stage member is located on, the rail member is provided over the range in the vertical direction so as to engage with the moving member.

According to the invention described in claim 9 , the moving member is engaged with the rail member regardless of which of the plurality of floors the work stage member is located on. Therefore, on any floor, it is possible to suppress the swinging of the scaffold in the above-described crossing direction, and as a result, it is possible to reliably stabilize the lifting operation of the work stage member.

The invention according to claim 10 is
A construction method for constructing the structure while using the scaffold lifting device according to claim 1 , wherein the rail member is used until the construction using the scaffold is completed. It is characterized in that the rail member is fixed to the structure immovably and the rail member is removed when the construction using the scaffold is completed.

According to the tenth aspect of the invention, since the construction of the structure is performed by the work stage member whose elevating operation is stabilized, the construction can be stably performed, and the construction period can be shortened as a whole.

ADVANTAGE OF THE INVENTION According to this invention, the rocking|fluctuation of the scaffolding mounted and supported by the work stage member provided in the side of structures, such as a building, and rising/lowering vertically is suppressed, and the raising/lowering operation of the said work stage member is stabilized. Can be achieved.

FIG. 1A is a schematic front view of the lifting device 30 of the scaffold 10 of the present embodiment, and FIG. 1B is a BB arrow view in FIG. 1A. FIG. 2 is an enlarged view of arrow II-II in FIG. 1A. It is a schematic enlarged view of III-III arrow in FIG. 1A for demonstrating a shake prevention mechanism. It is a schematic enlarged view of IV-IV arrow in FIG. 5A and 5B show an example of a preferable method for fixing the rail member 52 when the outer wall surfaces 1buw, 1bdw of the balconies 1bu, 1bd have different front-back positions due to the construction error of the building 1. FIG. FIG. 6A is a view showing a first modified example of the anti-sway mechanism as viewed from the arrow IV-IV in FIG. 3, and FIG. 6B is a view taken from the arrow BB in FIG. 6A. It is explanatory drawing of the rubber sleeve member 54k fitted in the through-hole of the vertical plate 54p as an elastic deformation part 54k. It is a figure which shows the 2nd modification of a shaking prevention mechanism by the IV-IV arrow in FIG.

=== This Embodiment ===
FIG. 1A is a schematic front view of the lifting device 30 of the scaffold 10 of the present embodiment. FIG. 1B is a view as seen from the arrow BB in FIG. 1A. In addition, FIG. 2 is an enlarged view taken along the line II-II in FIG. 1A.
In this example, the lifting device 30 of the scaffolding 10 is used for repair work on a 10-story building 1. The repair work is, for example, a repair work on an outer portion of the outer wall or the like of the building 1, and more specifically, is a painting of the outer wall, a refill of tiles, a repair of joints and seals, and the like. The concept of the outer wall of the building 1 also includes the outer walls of the balconies 1b, 1b... On each floor as shown in FIG.

In the following, of the two horizontal directions that intersect the vertical direction, the horizontal direction along the outer wall surface 1w of the building 1 is referred to as the "horizontal direction", and the horizontal direction orthogonal to the horizontal direction is referred to as "front-back direction". Say "direction". The front-rear direction is substantially parallel to the normal direction of the outer wall surface 1w of the building 1.

As shown in FIGS. 1A and 1B, the lifting device 30 of the scaffold 10 is arranged laterally of the building 1. In this example, one of the four outer wall surfaces 1w, 1w, which form the outer shape of the building 1, is arranged so as to face the outer wall surface 1w, but the present invention is not limited to this. For example, the elevating device 30 of another scaffold 10 may be arranged so as to face the outer wall surface 1w other than the outer wall surface 1w, and thereby the plurality of outer wall surfaces 1w, 1w may be simultaneously constructed.

The lifting device 30 of the scaffold 10 has a work stage member 32 that moves up and down while mounting and supporting the scaffold 10.
The work stage member 32 has, as a work floor, a floor portion 32f made of a plate material made of metal such as horizontally elongated rectangular stainless steel extending in the left-right direction, and the four sides 32fe, 32fe... Of the floor portion 32f are A handrail (not shown) is erected upright. Further, mast members 34, 34 are respectively erected on the ground GND on both sides in the left-right direction, whereby the mast members 34, 34 extend in the vertical direction. The work stage member 32 is supported by the pair of mast members 34, 34 and moves up and down.

The mast member 34 is formed of, for example, a truss structure and has a vertical length corresponding to the total number of floors of the building 1. Therefore, the work stage member 32 can be moved toward all floors of the building 1. In addition, a drive mechanism (not shown) is inserted between each mast member 34, 34 and the work stage member 32, and the work stage member 32 moves up and down by receiving a driving force from the drive mechanism. In this example, a rack and pinion mechanism is used as the drive mechanism. That is, a rack (not shown) is fixed to the mast member 34 by extending over substantially the entire length in the vertical direction, and a pinion (not shown) driven and rotated by an electric motor is provided on the work stage member 32. It is provided. The pinion and the rack are meshed with each other, and the work stage member 32 is moved up and down while being supported by the mast members 34, 34 when the pinion is driven and rotated.

The scaffold 10 is placed and supported on the floor portion 32f of the work stage member 32. In this example, a framed scaffolding 10 known as a scaffolding 10 is formed to extend in the vertical direction and the horizontal direction. That is, in the left-right direction, thirteen gate-shaped building frames 11, 11,... Are arranged in a row at a predetermined pitch in the left-right direction as an example, and the building frames 11, 11 adjacent in the left-right direction are arranged. A tread 13 and a brace 15 are laid between the two, whereby the 13 building frames 11, 11... Are integrally connected. On the other hand, in the vertical direction, four building frames 11, 11,... Are stacked in a row in the upper direction and are connected by a connecting pin (not shown) as one example. Thus, the four-stage frame scaffold 10 having the four treads 13, 13... Arranged in the vertical direction is formed. Therefore, in this example, in addition to the upper surface of the floor portion 32f of the work stage member 32, the four steps of the treads 13, 13,... Of the frame scaffold 10 are positioned above the upper surface of the floor portion 32f of the work stage member 32. It can be used as a working floor, and by this, repair work for a plurality of floors (three floors in the example of FIG. 2) can be performed simultaneously. As a result, the number of movements of the work stage member 32 can be reduced, and the construction period can be shortened. The frame scaffolding 10 may have a staircase (not shown) that connects the floor portion 32f of the work stage member 32 to the fourth step tread 13.

Here, as shown in FIG. 2, the state in which the scaffold 10 is placed and supported on the work stage member 32 is unstable. That is, when the work stage member 32 moves up and down, the scaffold 10 may swing in the front-rear direction and the left-right direction orthogonal to the up-down direction. In particular, there is a risk of significant shaking in the front-back direction. If it shakes significantly, a problem such as the meshing of the rack and pinion of the drive mechanism being disturbed may occur, and as a result, the work stage member 32 cannot perform stable lifting operation.

Therefore, the elevating device 30 of the present embodiment has a shaking prevention mechanism that suppresses the shaking of the scaffold 10.
FIG. 3 is a schematic enlarged view taken along the line III-III in FIG. 1A for explaining the anti-sway mechanism, and FIG. 4 is a schematic enlarged view taken along the line IV-IV in FIG.

The anti-sway mechanism includes a rail member 52 that is fixed to the outer wall surface 1w of the building 1 while extending along the up-down direction, and a moving member 54 that is fixed to the scaffold 10 and that engages with the rail member 52. By this engagement, the moving member 54 is allowed to move in the vertical direction with respect to the rail member 52 while being restricted from moving in the front-rear direction and the left-right direction. Therefore, the front-back and left-right swaying of the scaffolding 10 that can occur with the lifting/lowering operation of the work stage member 32 can be suppressed by taking the reaction force from the building 1, and as a result, the lifting/lowering operation of the work stage member 32 can be suppressed. It is being stabilized.

The rail member 52 has a vertical length corresponding to the total number of floors of the building 1. As a result, the rail member 52 is provided over the range in the vertical direction so as to engage with the moving member 54 regardless of which of the 10 floors the work stage member 32 is located. By the way, in this example, as shown in FIG. 3, the rail member 52 is fixed to the outer wall surface 1bw of the balcony 1b as an example of the outer wall surface 1w of the building 1, but is not limited to this.

Further, in this example, as shown in FIG. 4, the rail member 52 is formed of the channel steels 52c and 52c, which are very general steel materials, to reduce the cost. That is, the rail member 52 has a pair of grooved steels 52c and 52c, and these grooved steels 52c and 52c are arranged such that their groove portions are opposed to each other and the longitudinal direction is along the vertical direction. Then, in a vertically extending space SP52c defined by the pair of channel steels 52c, 52c, an H-shaped steel 54h described later as a part of the moving member 54 is accommodated so as to be vertically movable. There is. Specifically, the pair of channel steels 52c and 52c are arranged in the left-right direction with a left-right gap G52c therebetween. And it is immovably fixed to the outer wall surface 1w of the building 1 by the angle steel 52L as a stay member welded to each channel steel 52c. In this example, the angle steel 52L is fixed to the outer wall surface 1w of the building 1 by the chemical anchor ANC, but the chemical anchor ANC is not limited to this, and other anchors may be used, or a method other than the anchor. You may go in. By the way, after the repair work is completed, not only the rail member 52 but also the chemical anchor ANC is removed from the building 1, and the removed part of the building 1 is properly treated so as to be in the same state as the surrounding parts. Processing is performed.

On the other hand, as shown in FIGS. 3 and 4, the main body of the moving member 54 is a short H-shaped steel 54h having a vertical length of 200 mm to 300 mm. The H-shaped steel 54h is accommodated in the space SP52c defined by the pair of grooved steels 52c and 52c described above, with the H-shaped foreface facing upward and downward. Further, in this housed state, the pair of flanges 54hf1 and 54hf2 of the H-shaped steel 54h are arranged side by side in the front-rear direction. Further, a vertical plate 54p extending in the front-rear direction is welded to the flange 54hf1 of the pair of flanges 54hf1 and 54hf2, which is farther from the outer wall surface 1w of the building 1. Then, the vertical plate 54p protrudes outward (forward) in the front-rear direction from the space SP52c of the channel steel 52c through the gap G52c between the pair of channel steels 52c, 52c. Thus, the scaffold 10 is connected and fixed to the scaffold 10 through an appropriate connecting member. In this example, as such a connecting member, a steel frame catch clamp CC bolted to the vertical plate 54p, a vertical single pipe PV clamped and fixed to the clamp CC, and a front-rear direction connected to the vertical single pipe PV by the orthogonal clamp CV1. The front and rear single pipes PH that extend and the orthogonal clamp CV2 that connects the front and rear single pipes PH and the vertical single pipe 11p of the building frame 11 of the frame scaffold 10 are used, but the connecting member is not limited to this.

The moving members 54, 54... Are arranged at a plurality of vertical positions PUD, PUD, respectively, as shown in FIG. 1A. Further, rail members 52, 52,... Are arranged at a plurality of positions PLR, PLR... In the left-right direction, and the moving members 54, 54. They are arranged at positions PLR, PLR... Therefore, it is possible to suppress swinging of the scaffold 10 in the front-rear direction and the left-right direction at the plurality of vertical position PUDs and the plurality of left-right position PLRs.

Further, in this example, the four rail members 52, 52,... Are provided side by side in the left-right direction, but of these, the pair of rail members 52, 52 located on the outermost side in the left-right direction are both paired. It is located outside the mast members 34, 34 in the left-right direction. Therefore, the pair of rail members 52, 52 can support the scaffold 10 at both ends in the left-right direction and with a large span in the left-right direction at both ends, and thereby the swinging of the scaffold 10 can be more effectively performed. It can be suppressed.

Here, as shown in FIG. 1A, when the scaffold 10 is virtually bisected into an upper half 10u and a lower half 10d in the vertical direction, it is desirable that some moving members 54, 54 are preferably arranged at positions corresponding to the upper half portion 10u in the vertical direction and connected and fixed to the upper half portion 10u. Then, if done in this way, it is possible to suppress the front-back and left-right sway of the scaffold 10 in the upper half 10u, which tends to be more swaying than in the lower half 10d, and as a result, As a result, it is possible to effectively suppress the swing of the scaffold 10.

Further, more desirably, some of the other moving members 54, 54... Are arranged at positions corresponding to the lower half portion 10d in the vertical direction and are connected and fixed to the lower half portion 10d. And if it does in this way, not only the upper half part 10u but the lower half part 10d can suppress the shaking of the scaffolding 10 in the front-back direction and the left-right direction, and as a result, the shaking of the scaffolding 10 can be further enhanced. It can be effectively suppressed.

By the way, in this example, since the building 1 has the balcony 1b for each floor, as described above with reference to FIG. 3, the rail member 52 is fixed with the outer wall surface 1bw of the balcony 1b as the fixing target portion. There is. However, due to construction errors and the like when constructing the building 1, the positions of the outer wall surface 1bw of the balcony 1b in the front-rear direction may not be aligned on some floors. For example, as shown in the schematic view of FIG. 5A, the balcony 1bu on one floor may project forward (outward of the building 1) in the front-rear direction from the balcony 1bd on another floor. Then, in such a case, when the rail member 52 is abutted and fixed to both of the outer wall surface 1buw of the former balcony 1bu and the outer wall surface 1bdw of the latter balcony 1bd with almost no gap, the rail member 52 tilts from the vertical direction. Therefore, this may hinder the smooth movement of the moving member 54 in the vertical direction. On the other hand, when the rail member 52 is arranged in parallel in the vertical direction and the rail member 52 is abutted and fixed to the outer wall surface 1buw of the former balcony 1bu, between the outer wall surface 1bdw of the latter balcony 1bd and the rail member 52. A gap G1b is generated in the gap. If the rail member 52 is fixed to the outer wall surface 1bdw in the state where the gap G1b exists, the rail member 52 floats from the outer wall surface 1bdw and it becomes difficult to take a reaction force, and as a result, the moving member. There is a risk that the rail member 52 may vibrate in the front-rear direction and the left-right direction when passing through 54, which may also hinder the smooth movement of the moving member 54 in the up-down direction.

Therefore, desirably, as shown in FIG. 5B, the outer wall surface 1bdw of the latter balcony 1bd has the same thickness as the gap G1b in order to fill the front-back direction gap G1b between the rail member 52 and the outer wall surface 1bdw. It is preferable to provide the plate member 52p. In this way, the rail member 52 can be firmly fixed to the balcony 1bd (1b) of the building 1 while maintaining the rail member 52 parallel to the vertical direction.

6A and 6B are explanatory views of a first modified example of the anti-sway mechanism. 6A is a view corresponding to a view taken along the line IV-IV in FIG. 3, and FIG. 6B is a view taken along the line BB in FIG. 6A. 6A, the roller 54r and the vertical plate 54p are partially broken.
In the above-described embodiment, as shown in FIG. 4, the moving member 54 is formed of the H-shaped steel 54h and the vertical plate 54p, but in the first modification, as shown in FIGS. 6A and 6B, The moving member 54a has a vertical plate 54p and rollers 54r, 54r... Which are rotatably supported by the vertical plate 54p. The moving members 54a are engaged with the rail member 52 by the rollers 54r, 54r... Rolling on the rail member 52. Therefore, the moving member 54a can be stably moved in the vertical direction without being substantially caught by the rail member 52. The first modified example is different from the above-described embodiment mainly in this point, and the other points are substantially the same. Therefore, in the following, this difference will be mainly described, and description of the same content will be omitted.

As shown in FIGS. 6A and 6B, in this first modification, the moving member 54a has a four-wheel configuration including four rollers 54r, 54r. That is, the rollers 54r are arranged side by side on both sides of the vertical plate 54p in the left-right direction, and two rollers are arranged side by side in the vertical direction. Each roller 54r is supported by a shaft member 54s extending in the left-right direction via a bearing Brg, and the shaft member 54s is screwed immovably to a vertical plate 54p. Each roller 54r is rotatably supported around a central axis along the left-right direction. Therefore, each roller 54r can quickly roll the rail member 52 along the vertical direction.

The roller 54r may be made of steel, but is preferably made of rubber from the viewpoint of weight reduction. When made of rubber, the entire roller 54r functions as an elastically deformable portion that is elastically deformable in the front-rear direction. Therefore, when an excessive force in the front-rear direction is applied from the rail member 52 to the moving member 54a that moves in the up-down direction, the roller 54r quickly elastically deforms in the front-rear direction, whereby the moving member 54a moves. As a whole, it is possible to escape in the direction in which the above-mentioned force is reduced, and as a result, the moving member 54a can avoid defective movement such as being caught by the rail member 52.

Incidentally, when the roller 54r made of steel is used, as shown in FIG. 7, the member 54k functioning as the elastically deforming portion may be interposed between the vertical plate 54p and the shaft member 54s. That is, the sleeve member 54k made of rubber is fitted as the elastically deformable portion 54k into the through hole provided in the left and right direction of the vertical plate 54p, and the through hole provided in the left and right direction of the sleeve member 54k is provided with The shaft member 54s may be fitted and supported.
And if it does in this way, even if the force in the front-back direction acts on the roller 54r by the steel roller 54r rolling the rail member 52 hitting the rail member 52 strongly, etc. The sleeve member 54k elastically deforms, whereby the moving member 54a can escape in a direction in which this force is reduced. Therefore, even with the steel roller 54r, it is possible to avoid a movement failure such as the moving member 54a being caught by the rail member 52.

FIG. 8 is an explanatory view of a second modified example of the anti-sway mechanism, and is a view corresponding to a view taken along the line IV-IV in FIG. 3.
In the above-described embodiment, as shown in FIG. 4, the pair of channel steels 52c, 52c is used for the rail member 52, but in this second modification, as shown in FIG. The first difference is that the H-section steel 52bh is used. Further, in connection with the use of the H-shaped steel 52bh for the rail member 52b, the direction of the H-shaped steel 54bh of the moving member 54b is different from that of the above-described embodiment, and this point is also different. The second modified example is different from the above-described embodiment mainly in these points, and the other points are almost the same. Therefore, hereinafter, these differences will be mainly described, and description of the same contents will be omitted.

In this second modification, the H-shaped steel 52bh forming the main body of the rail member 52b is provided with the longitudinal direction along the vertical direction. And one flange 52bhf2 of the pair of flanges 52bhf1, 52bhf2 that the H-section steel 52bh has is fixed immovably by the chemical anchor ANC while being in contact with the outer wall surface 1w of the building 1, and the other one. A moving member 54b is engaged with the flange 52bhf1 so as to be vertically movable.

Here, the moving member 54b has a short H-shaped steel 54bh having a vertical length of 200 to 300 mm as a main body, and a pair of flanges 54bhf, 54bhf thereof are arranged side by side in the left-right direction. Further, on the inner surfaces of the pair of flanges 54bhf and 54bhf facing each other, angle-bar steel restricting members 54bk and 54bk extending in the left-right direction in parallel with the web 54bhw are bolted, respectively. The flanges 54bhf and 54bhf, the web 54bhw, and the regulating members 54bk and 54bk define a space SP54b that is substantially rectangular in a plan view. The other flange 52bhf1 of the H-shaped steel 52bh of the rail member 52b is inserted in the space SP54b. Therefore, based on the engagement with the rail member 52, the moving member 54b is allowed to move in the vertical direction while being restricted from moving in the front-rear direction and the left-right direction.

On the other hand, the H-section steel 54bh of the moving member 54b is fixed to the vertical single pipe 11p of the building frame 11 of the frame scaffolding 10 through the steel frame clamp CT, the single pipe PT, or the like. Therefore, also in the second modification, it is possible to reliably suppress the swinging of the scaffold 10 in the front-rear direction and the left-right direction that may occur when the work stage member 32 moves up and down.

=== Other Embodiments ===
Although the embodiments of the present invention have been described above, the above embodiments are for the purpose of facilitating the understanding of the present invention and not for limiting the interpretation of the present invention. Further, it is needless to say that the present invention can be modified or improved without departing from the gist thereof and that the present invention includes equivalents thereof. For example, the following modifications are possible.

In the above-described embodiments and the like, the 10-story building 1 is illustrated as an example of the structure, but the structure is not limited thereto. That is, it may be a building having a floor number other than 10 floors, or may be a structure other than a building such as a bridge pier. However, the higher the height of the building, the greater the effect of the present invention. Therefore, it is desirable to use the scaffolding lifting device of the present invention for construction of a building having many floors such as a high-rise building.

In the above-described embodiments and the like, the elevating device 30 of the scaffold 10 of the present invention is used for the repair work of the existing structure such as the existing building 1 as an example of the work, but the present invention is not limited to this. That is, you may use the raising/lowering apparatus 30 of the scaffold 10 of this invention for new construction of a structure. However, also in this case, the rail member 52 is fixed to the structure. Therefore, the rail member 52 is fixed to the completed skeleton portion on the lower side as the skeleton of the structure is gradually formed from bottom to top, and the rail member 52 is newly added above the skeleton portion. When the main body portion is completed, a new rail member 52 is fixed to the new body portion so that it can be added above the rail member 52. As a result, the work stage member 32 can be moved up and down, and thus the floor portion 32f of the work stage member 32 and the scaffold 10 placed and supported thereon can be used as a work floor.

In the above-described embodiment, the rail member 52 is described as being continuously provided over the entire number of floors in the vertical direction of the building 1, but the present invention is not limited to this. For example, the rail member 52 is in the form of a divided body that is divided into a plurality of pieces in the vertical direction, and each divided body is abutted with a divided body that is adjacent in the vertical direction. One rail member 52 having a length extending over the length may be formed.

In the above-described embodiments and the like, as shown in FIGS. 1A and 2, as an example of the scaffold 10 placed and supported on the work stage member 32, the frame scaffold 10 having a four-tiered configuration in the vertical direction has been illustrated. Not exclusively. For example, the number of stages may be one. That is, a plurality of building frames 11, 11,... Are arranged side by side at a predetermined pitch in the left-right direction, but only one building frame 11 may be arranged in the up-down direction. Further, scaffolds other than the frame scaffold 10 may be placed and supported on the work stage member 32. For example, a single pipe scaffold may be mounted and supported, or a scaffold of a type other than this may be mounted and supported.

In the above-described embodiment and the like, as shown in FIG. 1A, the two mast members 34, 34 are arranged side by side in the left-right direction as one example, but the present invention is not limited to this. For example, three or more mast members 34, 34... May be arranged side by side in the left-right direction, or in some cases, only one mast member 34 may be included. However, from the viewpoint of the stability of the raising and lowering operation of the work stage member 32, it is desirable that the plurality of mast members 34, 34 are arranged side by side in the left-right direction.

In the above-described embodiment and the second modification, the moving members 54 and 54b do not have rollers that are rotatably supported, but in some cases, the moving members 54 and 54b may also have rollers. The roller may roll the rail members 52 and 52b. Incidentally, in the case of the embodiment shown in FIG. 4, for example, the rollers are rotatably provided on the flanges 54hf1 and 54hf2 of the H-shaped steel 54h forming the main body of the moving member 54 via bearings, respectively. On the other hand, in the case of the second modification of FIG. 8, for example, the roller is rotatably provided on the web 54bhw of the H-shaped steel 54bh and the regulating members 54bk, 54bk, which form the main body of the moving member 54b, via bearings. Become.

1 building (structure), 1b balcony, 1bu balcony, 1bd balcony,
1w outer wall surface, 1bw outer wall surface, 1buw outer wall surface, 1bdw outer wall surface,
10 Frame scaffolding (scaffolding), 10u upper half, 10d lower half,
11 building frames, 11p vertical single pipe, 13 treads, 15 braces,
30 lifting device, 32 work stage member, 32f floor part, 32fe side,
34 Mast member,
52 rail member, 52c channel steel, 52L chevron steel, 52p plate member,
52b rail member,
52bh H-section steel, 52bhf1 flange, 52bhf2 flange,
54 moving member, 54h H-shaped steel (part),
54hf1 flange, 54hf2 flange, 54bhw web,
54p vertical plate,
54a moving member, 54r roller (elastically deformable portion), 54s shaft member, 54k sleeve member (elastically deformable portion),
54b moving member, 54bh H-shaped steel, 54bhf flange, 54bk regulating member,
CC catch clamp, CV1 orthogonal clamp, CV2 orthogonal clamp,
CT steel clamp,
PV vertical single pipe, PH front and rear single pipe, PT single pipe,
PUD position, PLR position,
ANC chemical anchor, Brg bearing,
G52c gap, G1b gap, SP52c space, SP54b space,
GND ground,

Claims (10)

A lifting device for vertically moving a scaffold provided on a side of a structure,
A work stage member that moves up and down in the vertical direction while mounting and supporting the scaffold,
While extending along the up-down direction, a rail member that is immovably fixed to the structure until the construction using the scaffold is completed,
A moving member fixed to the scaffold, the moving member engaging with the rail member so as to be allowed to move in the vertical direction while restricting movement in an intersecting direction intersecting with the vertical direction,
Erect on the ground, comprising a mast member extending along the vertical direction,
The work stage member is supported by the mast member and moves up and down in the vertical direction,
The scaffold lifting device , wherein the rail member is a member different from the mast member . The scaffolding lifting device according to claim 1,
The rail member has a pair of channel steels provided with the longitudinal direction along the vertical direction while facing each other's groove portions,
A scaffold lifting device, wherein a part of the moving member is accommodated in the space defined by the pair of channel steels and extending in the vertical direction so as to be movable in the vertical direction. The scaffolding lifting device according to claim 1,
The rail member has an H-shaped steel provided with its longitudinal direction along the vertical direction,
One of the pair of flanges of the H-section steel is fixed to the structure, and the other member is engaged with the moving member in the vertical direction. Lifting device for scaffolds. The scaffolding lifting device according to any one of claims 1 to 3,
The moving member has a roller rotatably supported, and by the roller rolling the rail member, the moving member is engaged with the rail member. lift device. The scaffolding lifting device according to any one of claims 1 to 4,
The scaffold lifting device, wherein the moving member has an elastically deformable portion that elastically deforms in the intersecting direction. The scaffolding lifting device according to any one of claims 1 to 5,
The scaffold lifting device, wherein the moving member is fixed to the upper half when the scaffold is divided into an upper half and a lower half in the vertical direction. A scaffold lifting device according to any one of claims 1 to 6 ,
The scaffold is a frame scaffold,
In the frame scaffolding, a plurality of building frames are stacked in the vertical direction, and a tread plate is provided in each of the plurality of building frames, and a plurality of the tread plates are arranged in the vertical direction. Lifting device for scaffolds. The scaffolding lifting device according to any one of claims 1 to 7 ,
The rail member is fixed to a plurality of fixing target portions arranged in the vertical direction in the structure,
When the direction along the outer wall surface of the structure in the crossing direction is the left-right direction, and when the direction orthogonal to the left-right direction is the front-back direction,
One fixing target portion of the plurality of fixing target portions is projected in the front-back direction than another fixing target portion,
The scaffold lifting device, wherein a plate member is provided in the other fixing target portion so as to fill the gap in the front-rear direction generated between the rail member and the rail member. The scaffolding lifting device according to any one of claims 1 to 8 ,
The structure is a multi-storey building,
Regardless of which floor of the plurality of floors the work stage member is located on, the rail member is provided over the range in the vertical direction so as to engage with the moving member. lift device. A structure construction method for constructing the structure while using the scaffolding lifting device according to claim 1 .
The rail member is immovably fixed to the structure until the construction using the scaffold is completed,
A construction method for a structure, characterized in that the rail member is removed when construction using the scaffold is completed.