JP2003314054A - Temporary scaffolding for steel construction - Google Patents

Abstract

(57) [Summary] [Problem] A pillar member that is lightweight and has high safety because it is provided with a corner scaffold using an existing tread as a scaffold, and furthermore, a column member can be easily used alone by a worker at a high place. Provide temporary scaffolding that can be attached to and detached from A reach frame connected to a column member.
A movable frame 4 supported in a horizontal state is rotatably connected to the lower end of the movable frame 4. A sliding pipe 7 is provided in the movable frame 4 in a direction perpendicular to the movable frame 4, The out frame to be supported is slidably supported in the horizontal direction, and the tread plate 13 is disposed on the out frame 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of a temporary scaffold used for connecting pillar members to each other at a construction site of a steel frame building.

[0002]

2. Description of the Related Art Conventionally, at a construction site of a steel frame building, a temporary scaffold is provided around the lower pillar when connecting the pillar to connect the lower end of the next pillar member to the upper end of the lower pillar member. Then, the worker connects the upper pillar, which is lifted by a crane, on this scaffold to the lower pillar and bolts them. On the other hand, this temporary scaffolding is used after being removed from the connection portion of the pillar member after the connection work of the pillar member of a predetermined layer is completed and attached to the next upper pillar connection portion.

As described above, the temporary scaffolding is used so that after the connection work of the pillar members of a predetermined layer is completed, the temporary scaffolding is detached from the connection portion of the pillar member and attached to the next upper pillar connection portion. Therefore, after the connection work of the pillar members is completed, it must be possible to easily remove it at a high place, and to easily transfer it to the next connection work part above and immediately attach it on the spot. . For that reason, in the past,
As a temporary scaffold of this kind, Japanese Patent Laid-Open No. 7-300987,
The structures described in JP-A-7-62856 and the like are known.

Among the above-mentioned temporary scaffolds, JP-A-7-300
In the temporary scaffold of No. 987, a hook is provided on the side surface of the pillar member, and a mounting hole for inserting the hook is provided in the scaffold plate so that the mounting hole of the scaffold plate can be hooked on the hook of the pillar member. The scaffold plate is connected to the pillar member.

On the other hand, in the temporary scaffold of JP-A-7-62856, a ring is provided on the side surface of the pillar member and a hook is provided on the back surface of the frame so that the hook of the frame can be hooked on the ring of the pillar member. The center scaffolding plate is attached to the upper end of this frame so that it can rotate horizontally and vertically, and a pair of left and right accessory scaffolding plates can be folded and left and right deployed at both ends of this center scaffolding plate. It is connected as follows.

[0006]

In all of the above-mentioned conventional temporary scaffolds, the hook and the suspension hole are used as a means for attaching and detaching the scaffold plate to and from the pillar member. It seems that putting on and taking off can be done easily at first glance. However, these conventional temporary scaffolds do not use off-the-shelf footboards, handrail pipes, etc., which have been widely used in construction sites of this type as their parts, and are unique to the structure of temporary scaffolds. Since a scaffolding plate having a shape is used, it has a problem that it cannot be easily attached to and detached from the pillar member.

For example, in the temporary scaffold of Japanese Patent Laid-Open No. 7-300987, the structure of the scaffolding plate is provided with a mounting hole for inserting a hook protruding from the pillar member or for locking the hook and the mounting hole. Since a wedge-shaped fixture must be provided, and the handrails provided around the scaffolding plate must also have a shape that fits this scaffolding plate.
The shape and weight of the entire temporary scaffold become extremely large, and it is not possible for an operator to detach and operate by himself at a high place, and a crane must be used to attach and detach the pillar member. have.

On the other hand, in the temporary scaffold of Japanese Patent Laid-Open No. 7-62856, the scaffolding plate is composed of the central scaffolding plate and a pair of left and right folding type scaffolding plates rotatably connected to both ends thereof.
The bottom surface of the central scaffolding board is supported by the scaffolding frame, and there is no problem in terms of durability, and it is safe, but the pair of left and right accessory scaffolding boards that are connected to both ends of this central scaffolding board support the bottom surface. Moreover, since the weight of the worker must be supported only by the connecting portion with the central scaffolding plate, there is a problem that the scaffolding plate is not durable and lacks safety.

Further, the temporary scaffold is provided on the side surface of the pillar member because it is attached to the pillar member by hooking a hook provided on the back surface of the scaffold frame to a ring provided on the side surface of the pillar member. The width of the left and right rings and the width of the left and right hooks provided on the back of the frame of the temporary scaffold must always be the same. Naturally, the width of the pillar member (the distance between the left and right flanges of the steel pillar) is However, the hook widths on the left and right sides of the frame of the temporary scaffolding must be changed at the factory or at the construction site according to the ring widths on the left and right provided on the pillar members, as they will always differ depending on the scale of the building. For example, it has a problem that it cannot be attached to a pillar member.

[0010]

SUMMARY OF THE INVENTION The present invention solves the problems of the temporary scaffolding of this kind in the related art as described above, and uses an existing tread plate for the scaffolding plate, so that it is lightweight and highly safe, In addition, the purpose is to provide a temporary scaffolding in which a single worker can easily attach and detach the pillar member at a high place.

[0011]

As a concrete means therefor, the temporary scaffold for steel frame construction of the present invention is a temporary scaffold provided at a column member connection portion of a steel frame construction site, and is a reach which is previously attached to the column member. A frame and a movable frame that is rotatably connected to the lower end of the reach frame and is supported in a horizontal state at a right angle to the reach frame;
It is characterized in that it is composed of an out frame that is slidably supported in a horizontal direction orthogonal to the movable frame, and a tread plate arranged on the out frame and the movable frame.

The reach frame and the movable frame rotatably connected to the lower end of the reach frame are composed of a pair of left and right, respectively, and the base end and the tip of the pair of movable frames are respectively formed. Sliding pipes should be provided orthogonally, and an out frame consisting of a pair of parallel pipes whose both ends are connected by connecting sides is slidably inserted and supported in these sliding pipes. Is preferred.

The reach frame and the movable frame rotatably connected to the lower end of the reach frame are:
Each of the reach frame and the movable frame is slidably supported in the horizontal direction with respect to the out frame, and one of the reach frames is formed according to the width of the pillar member to be erected. And the movable frame, and the other reach frame and movable frame,
It is configured to be able to move along the out frame.

Furthermore, the out frame, which is slidably supported in the horizontal direction at right angles to the movable frame, is slidably supported along with the main frame slidably supported by the movable frame. It may be configured by a combination of a plurality of frame pipes such as a subframe that is inserted and supported.

As means for attaching the scaffolding to the pillar member, a pair of support projections are provided on the upper and lower portions of both side surfaces of the pillar member, and the same support is also provided on the upper and lower rear end portions of the pair of left and right reach frames. By projecting the projecting sides at the same interval and moving the movable frame along the out frame, the position intervals of the supporting projecting sides on the rear surfaces of the pair of left and right reach frames are set to be the pair of supporting projecting sides on both side surfaces of the pillar member. It is preferable that the support protrusions at the respective suitable positions are connected to each other by bolts so as to be adapted to the position intervals of.

Further, the connecting sides connected to both ends of the out frame are arranged so as to be located above the position of the out frame bar by the thickness of the general-purpose tread, so that the general purpose is provided on the out frame. It is preferable that when the tread plate is placed, hooks projecting from both ends of the tread plate are locked to both ends of the connecting side so that the tread plate can be stably placed on the out frame.

The connecting sides connected to the upper ends of the out frame swing inward and outward along the length direction of the out frame via arms protruding upward at both ends of the out frame. Connect as much as possible and appropriately select the protruding angle of the connecting side according to the meter size or inch size length of the tread so that it can be freely adapted regardless of whether the tread is a meter size or an inch size. May be.

[0018]

In the temporary scaffold of the present invention, the reach frame is previously attached to both side surfaces of the column member by using connecting means such as bolts and hooks. The movable frame connected to the reach frame is different from the out frame. Since the width of the pillar members that connect the reach frame (the distance between the left and right flanges of the steel frame columns) varies depending on the construction site, the reach frame and the movable frame are connected along the out frame on the site. By moving the reach frame, the reach frame mounting position can be adjusted to the flange position of the pillar member, etc., and for any width of pillar member such as a pillar member with a large flange gap width or a pillar member with a small flange gap width. However, it can be easily installed.

Further, although this kind of temporary scaffold is preliminarily attached to the pillar member on the ground, it is hoisted to the connection position of the existing pillar member by a crane, but when the pillar member is hoisted by the crane, the scaffold plate is used. If it is already attached to the side of the machine in a state where it is opened horizontally, the scaffolding plate opened during the lifting will hit the surroundings and hinder the lifting work.

Therefore, when attaching the temporary scaffold to the pillar member on the ground, as shown in FIG. 3, the surface of the scaffold plate is folded so as to be in contact with the side surface of the pillar member, and the pillar member is attached so as not to cause extra protrusion. The scaffold plate is mounted in the horizontal direction with respect to the side surface of the pillar member after the pillar member is lifted up. At that time, if each scaffolding plate is opened downward in the state as shown in FIG. 3, a corner space portion where the scaffolding plate is missing occurs outside the corner of the pillar member.

In such a case, in the temporary scaffold of the present invention,
Since the out frame and the movable frame are slidably connected, as shown in FIG. 4, the out frame of one temporary scaffold is connected to the fixed movable frame at the corner of the pillar member at the suspended position. When the slide member is slid toward the outer side of the corner and then opened horizontally, the temporary scaffold having the corner scaffolding plate can be provided outside the corner of the pillar member.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Next, the structure of a temporary scaffold according to the present invention will be described with reference to an embodiment. FIG. 1 shows the structure of the temporary scaffold in a use state. In addition, the tread 13 is displayed separately. The scaffold 1 is rotatably connected to a lower end of the reach frame 3 and a reach frame 3 attached near the connecting portion 2a of the pillar member 2, and is supported in a horizontal state perpendicular to the reach frame 3. The movable frame 4 and the out frame 5 that is slidably supported in the horizontal direction perpendicular to the movable frame 4 are basically structured.

The reach frame 3 and the movable frame 4 which is rotatably connected to the lower end of the reach frame 3 via a hinge 6 are constituted by a pair of left and right, respectively. Sliding pipes 7 are provided at the base end portion and the distal end portion so as to be orthogonal to each other, and in these sliding pipes 7, pipe connecting sides 8 are connected to both ends and parallel to each other with a length of about 1500 mm. The out frame 5 composed of a pair of bar pipes 5a is slidably inserted and supported. As shown in FIG. 2, the sliding pipe 7 is provided with a bolt 15 for crimping the inner out frame 5 and fixing the position of the out frame 5 to the movable frame 4.

The temporary scaffolding 1 is preliminarily attached to a predetermined position of the pillar member 2 when the pillar member 2 is on the ground. As a mounting means, the left and right flanges 2 of the pillar member 2 are preliminarily attached.
Support protrusions 9 are welded to the upper and lower two positions of b and 2c, and similar support protrusions 10 are also protruded at the same intervals on the upper and lower rear end portions of the pair of left and right reach frames 3 so that the right and left sides are protruded. By moving the movable frame 4 along the out frame 5, the position intervals of the support protrusions 10 on the back surfaces of the pair of left and right reach frames 3 are set to the side flanges 2 of the pillar member 2.
The supporting projections 9 and 10 are connected to each other by bolts 11 so as to match the positions of the supporting projections 9 on b and 2c.

The connecting sides 8 connected to both ends of the out frame 4 are provided with the arm 12 rather than the position of the bar pipe 5a forming the out frame 5, and the ready-made general-purpose tread 13
Is arranged upward by about the thickness of the tread 13, and when the tread 13 is placed on the out frame 5, hooks 14 projecting from both ends of the tread 13 are locked to both ends of the connecting side 8. , The tread 13 is supported so as not to move on the out frame 5. The tread 13 may be an off-the-shelf product, but may have a unique shape that fits the out frame 5.

As shown in FIGS. 3 and 4, the temporary scaffolds attached to both sides of the corners of the pillar member 1 have such a length that the ready-made tread 13 having a length of 1500 mm can be placed on the out frame 5. It is desirable to use Type A having a large length and Type B having a small length such that a ready-made tread 13 having a length of 900 mm can be placed on the out frame 5.

The temporary scaffold shown in FIG.
The connecting side 8 is attached above both ends of the through-arm 12 through the arms 12. The structure for fixing the position of the connecting side 8 by the arm 12 is that the tread 13 placed on the out frame 5 is , For meter size or for inch size.

Therefore, in order to allow the tread 13 placed on the out frame 5 to be used for both meter size and inch size, as shown in FIG. The arms 12 projecting from both ends of the frame 5 are connected so as to be swingable in both inner and outer directions along the length direction of the out frame 5, and the connecting side 8
Is fixed to the inch size tread when it is fixed by the bolt 16 at the outer position, and it is used for the meter size tread when the connecting side 8 is fixed by the bolt 16 at the inner position.

In the above embodiment, the out frame 5 slidably supported by the movable frame 4 has been described as having a constant length. However, as a structural feature, the out frame 5 is attached to the movable frame 4. As long as the structure is supported so as to be orthogonal to and slidable in the horizontal direction, for example, FIG.
As shown in FIG.
The main frame 50a slidably supported by the sliding pipe 70 of 0 and the pair of left and right sub-frames 50b, 50c which are inserted into both ends of the main frame 50a and are supported so as to extend and contract. The structure may be such that the thickness can be adjusted appropriately. The number of the subframes 50b and 50c is not necessarily two, and although not shown, it may be one subframe 50b inserted at one end of the main frame 50a.

When using the temporary scaffold, as shown in FIG. 3, the temporary scaffold 1 of type A and the temporary scaffold 1 of type B are mounted on both sides of the corners of the pillar member 2 on the ground. At the time of this attachment, in both types A and B, the positions of the reach frame 3 and the movable frame 4 are moved along the out frame 5, so that the support protrusion 10 of the reach frame 3 is fixed to the pillar member 2.
It is fitted to the position of the support protrusion 9 in FIG.

At this time, the out frames 5 of both scaffolds 1 are arranged in such positions that the ends 1A and 1B adjacent to each other are abutted with each other at the corners of the pillar member 2, and the pillar member 2 is moved upward in this state. lift. In FIG. 3, the tread 13 is not shown on the outframe 5 by a solid line, but in reality, as shown by a chain line, the tread 13 is arranged on the outframe 5 on both scaffolds. . Although not shown in the drawing when the scaffold 1 is lifted from the ground,
A clamp for attaching a handrail is attached to the outer end of the connecting side 8 at the tip of the out frame 5.

Next, the pillar member 2 to which the temporary scaffold 1 is attached
4, the reach frame 3 and the movable frame 4 of the scaffold 1 of type A are left as they are, as shown in FIG. 4, and one end 1A of the out frame 5 is largely projected outward (leftward in FIG. 4). The scaffolding 1 of type A and the scaffolding 1 of type B are operated so as to intersect each other in a T shape.

Then, when both the scaffolds 1 are unfolded downward so that the movable frame 4 and the out frame 5 are horizontal, a corner scaffold 1C is provided outside the corner of the pillar member 2 as shown in FIG. Will be formed, the pillar member 2
You can easily set up a safe scaffold with a corner around the outside.

[0034]

The temporary scaffold according to the present invention has a reach frame 3 connected to the pillar member 2, a movable frame 4 rotatably supported by the reach frame 3, and a slidable support on the movable frame 4. The tread 13 is a ready-made product that conforms to the standard.
The footboard can be freely removed, and the scaffold itself without the footboard is composed of only the three frames described above, so the total weight is less than that of a conventional temporary scaffold. It can be made much lighter in weight, easy to handle at the construction site, easy to handle, and far cheaper in price than conventional products.

In this temporary scaffold, the lower surface of the tread 13 is supported by the out frame 5 over the entire length, and the out frame 5 is supported by the reach frame 3 integrated with the pillar member by the movable frame 4, so that the tread of the tread is reduced. Any part can safely support the weight of the worker, and can be a product with high durability and safety as a scaffolding board.

In the temporary scaffold of the present invention, the movable frame 4 is provided at the lower end of the reach frame 3 attached to both sides of the pillar member 2.
Is rotatably supported, and the out frame 5 supporting the tread 13 is slidably supported on the movable frame 4. Therefore, by freely moving the movable frame 4 along the out frame 5, the reach The frame 3 can be attached to the column member 2 of any width, and if the support protrusions 9 are attached to the column member 2 in the factory in advance, the installation width interval of the support protrusions 9 of the column member 2 can be set on site. Accordingly, the width interval between the movable frame 4 and the reach frame 3 can be easily adjusted and attached to the column member 2, so that it can be easily attached to the column member of any width.

Further, in the conventional temporary scaffold of this type, there is a problem that the corner scaffold 1C cannot be provided outside the corner portion of the pillar member 2 as shown in FIG. 6 of the present invention. According to the temporary scaffold, since the out frame 5 provided with the scaffolding plate can slide with respect to the movable frame 4, one of the scaffolding plates attached to both sides of the corner portion of the pillar member 2 has one scaffolding plate at one end. When the pillar member 2 is moved outward so as to project from the supporting surface of the pillar member 2 and then is deployed downward, a scaffolding plate having a corner by the corner scaffold 1C can be provided outside the corner portion of the pillar member 2 for safety. From the aspect, it is possible to provide an optimal temporary scaffold.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a temporary scaffold according to the present invention.

FIG. 2 is a partial perspective view showing a connection structure between a movable frame and an out frame.

FIG. 3 is a perspective view when a pair of temporary scaffolds are attached to both sides of a corner portion of a pillar member and lifted.

FIG. 4 is a perspective view showing a state where one of the temporary scaffolds attached to both sides of a corner portion of a pillar member is moved.

FIG. 5 is a plan view showing a state in which both temporary scaffolds attached to both sides of a corner portion of a pillar member are unfolded.

FIG. 6 is a perspective view showing a configuration of a pair of deployed temporary scaffolds shown in FIG.

FIG. 7 is a side view showing a state in which the reach frame and the movable frame are folded.

FIG. 8 is a side view showing a state in which the movable frame is opened with respect to the reach frame.

FIG. 9 is a front view showing another configuration of connection sides provided at both ends of the out frame.

FIG. 10 is a cross-sectional view showing another configuration of the out frame.

[Explanation of symbols]

1: Temporary scaffold, 1A, 1B: One end of temporary scaffold, 1C: Corner scaffolding, 2: Pillar member, 2a: pillar member connection part, 2b, 2c: pillar member flange, 3: Reach frame, 4: Movable frame, 5: Out frame, 6: hinge, 7: Sliding pipe, 8: connection edge, 9: Support ridge, 10: support protrusion, 11: bolt, 12: Arm, 13: tread, 14: Hook, 15: bolt, 16: bolt, 40: Movable frame, 50: Out frame, 50a: mainframe, 50b, 50c: Subframe

Claims (7)

[Claims] 1. A temporary scaffold provided at a column member connection portion of a steel frame construction site, wherein a reach frame preliminarily attached to the column member and a lower end of the reach frame are rotatably connected to the reach frame. It is composed of a movable frame which is supported in a horizontal state at a right angle to it, an out frame which is orthogonal to the movable frame and is slidably supported in the horizontal direction, and a tread plate arranged on the out frame and the movable frame. Temporary scaffolding for steel frame construction. 2. A reach frame and a movable frame rotatably connected to a lower end of the reach frame are made up of a pair of left and right sides, respectively, and a base end portion and a tip end portion of the pair of movable frames are provided. Sliding pipes are provided orthogonally to each other, and an out frame composed of a pair of parallel bars whose both ends are connected by connecting sides is slidably inserted and supported in the sliding pipes. Temporary scaffolding for steel frame construction 1. 3. A reach frame and a movable frame rotatably connected to a lower end of the reach frame are made up of a pair of left and right sides, respectively, and the reach frame and the movable frame are different from the out frame. Is horizontally slidably supported and moves along the out frame by the distance between one reach frame and movable frame and the other reach frame and movable frame according to the width of the upright pillar member. The temporary scaffolding for steel frame construction according to claim 1, which is possible. 4. An outer frame slidably supported in a horizontal direction orthogonal to the movable frame, a main frame slidably supported by the movable frame, and a slidable portion along the main frame. The temporary scaffolding for steel frame construction according to claim 1 or 2, which is composed of a combination of a plurality of frames such as a sub-frame which is inserted and supported. 5. A pair of support projections is provided on the upper and lower portions of both side surfaces of the pillar member so as to project, and similar support projections are also provided on the upper and lower rear end portions of the pair of left and right reach frames at the same intervals. By moving the movable frame along the out frame,
Claims: The position intervals of the support protrusions on the back surface of the pair of left and right reach frames are adapted to the position intervals of the pair of support protrusions on both side faces of the pillar member, and the support protrusions at the respective compatible positions are connected to each other by bolts. Temporary scaffolding for steel frame construction in paragraph 1. 6. A connecting step connected to both ends of the out frame is arranged so as to be located above the position of the out frame bar by a thickness of a general-purpose tread, and the connecting step is connected to the general-purpose tread. The temporary scaffolding for steel frame construction according to claim 1, wherein hooks projecting from both ends of the tread are mounted on the out frame. 7. A connecting edge connecting to both ends of the out frame is oscillated in both inner and outer directions along the length direction of the out frame via arms protruding upward at both ends of the out frame. The temporary scaffolding for steel frame construction according to claim 1 or 6, wherein the temporary connection scaffolds are connected so that the projecting angles of the connection sides can be selected according to the meter size or inch size length of the tread.