JPH07158256A - Foldable type building scaffold - Google Patents

Abstract

PURPOSE:To prevent the folded height of a building scaffold from being high, so as to facilitate the carrying thereof and to facilitate the folding of a scaffold in a storage condition and the expanding of the same in a use condition. CONSTITUTION:A flexible connecting rod 11 is connected between front and rear support columns 1a, 1b of those provided at for corners of a scaffold, and the front two support columns 1a are connected together by a plurality of crossbeams 50 while the rear two support columns 1b are connected together by a plurality of cross-beams 50. When the scaffold is in a use condition, grippers 6 attached at longitudinally opposite ends of a scaffold plate 6 are hooked on the crossbeams 5 laid between the upper ends of the front and rear support columns 1a, 1b so as to form a working floor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a foldable type that allows an operator to move up to a high position and easily move when working on a high portion of a ceiling or a wall of a construction site. Regarding construction work scaffolding.

[0002]

2. Description of the Related Art Conventionally, when working on a ceiling or a high portion of a wall in construction work, a pipe and a clamp are used along the wall to form a frame, and the frame holds a scaffolding board. The worker is placed on it. It is also known that the scaffolding base is made foldable so that it can be easily carried and assembled. This folding scaffolding base is disclosed in Japanese Unexamined Patent Publication No. 2-85467 and Japanese Utility Model Laid-Open No. 62-
As described in Japanese Patent No. 110439, wheels are provided at the lower ends of the columns so that the wheels can be moved. Also, when cutting at the center of the scaffolding to connect with hinges and folding,
The half of both sides of the scaffolding plate is lifted up at the center side end portions thereof and vertically erected in the center portion of the scaffolding base to be in a stored state.

[0003]

In the conventional folding type scaffolding platform, when folding the scaffolding platform cut in half, the scaffolding platform is lifted up to make it vertical, so that the height of the scaffolding platform in the stored state becomes high. Such as not being installed in a cargo elevator
It was inconvenient to carry. Further, since the scaffolding base becomes taller in a folded state, there is a problem that it is not easy for one operator to fold the scaffolding base vertically or to spread it horizontally. Therefore, an object of the present invention is to prevent the height of the scaffolding base in the folded state from becoming high, to facilitate carrying, and to facilitate the work of folding into the stored state and the work of expanding into the used state.

[0004]

The present invention is a folding type construction work scaffolding which achieves the above-mentioned object, in which pillars having wheels at lower ends are provided at four corners of front, rear, left and right, and two front pillars are laterally arranged. In addition to being connected by a bar, the rear two posts are connected by a horizontal bar, and a connecting frame with a height of approximately the upper half is provided between the front and rear struts on one side, and a lower frame between the front and rear struts on the other side. A half-height connecting frame is provided, and the front and rear ends of each connecting frame are rotatably connected to the pillars by the vertical shafts, and each connecting frame is cut at the central part so that adjacent parts thereof are in the vertical direction. It is rotatably connected by the axis of. In addition, the scaffolding board can be hung on the horizontal bar provided at the upper end between the front and rear columns. Each strut is formed of a double cylinder that can expand and contract in the longitudinal direction, and a fixing means for fixing the strut to a predetermined length is provided. A handrail is detachably provided on the upper surface of the scaffold flooring. Furthermore, the folding type construction work scaffolding was constructed as follows. Two center columns having wheels at the lower ends are arranged at intervals, a connecting frame is provided on both sides of both center columns so as to be foldably connected to each other, and wheels are provided at the lower ends at the outer ends of each connecting frame. The pillars are connected, the central pillars are connected by horizontal bars, the outer pillars are connected by horizontal bars, and the scaffolding board can be hung on the horizontal bars provided at the upper ends between the pillars. There is.

[0005]

When the folding construction work scaffolding of the present invention is folded, the scaffolding board hung on the horizontal bar between the columns is removed, and the connecting frames on both sides are attached so that their central portions are directed inward. By folding so as to be adjacent to and overlap between the two columns on the front side with respect to the center, it can be stored at the same height as before folding, and can be easily moved by the wheels at the lower ends of the columns. Also, when expanding the stored folding foldable scaffold for construction work to the usable state, extend the folded connecting frames on both sides and hang the scaffolding board on the horizontal bar between the columns to put the scaffolding platform in use. You can When changing the height of the scaffolding base, after removing the fixing means from each of the columns of the double cylinder and adjusting the length, the column length is fixed by the fixing means. In addition, for the safety of work on the scaffolding table, handrails are attached around the upper surface of the scaffolding floor material, and are removed when folding. When the connecting frames are provided on both sides of the central column, the connecting frames on both sides of the central column are folded and put in a stored state after removing the scaffolding plate that is hung between the central column and the outer column as described above.
In addition, in the use state, similarly to the above, the connecting frames on both sides can be extended and the scaffold plate can be stretched over the horizontal bar provided between the support columns to be in the use state.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the folding construction work scaffolding base of the present invention will be described with reference to FIGS. The columns 1a and 1b are provided at the four vertex positions of the rectangle, respectively.
1b is formed in a double cylinder and is expandable and contractable, and a pin hole 2a is provided in the lower portion of the outer cylinder, and a pin hole 2b is provided in the inner cylinder at appropriate intervals in the longitudinal direction. Then, after adjusting the double cylinders forming the columns 1a and 1b to an arbitrary length, the pin hole 2b of the inner cylinder that matches the pin hole 2a of the outer cylinder.
The length can be fixed by a fixing means configured to pass the pin 3 through. The two front columns 1a are connected by a plurality of horizontal bars 5, and the two rear columns 1a are connected to each other.
The b's are connected by a plurality of horizontal bars 5 and function as a ladder when going up on a scaffolding plate 6 to be described later. Although the horizontal bar 5 connects the outer cylinders of the support columns, the horizontal bar 5a is slightly longer than the horizontal bar 5 between the lower end portions of the inner cylinders.
, And wheels 7 are attached to both ends of the lower surface of the horizontal bar 5a via free shafts 4 so as to be oriented in arbitrary directions, thereby facilitating the movement of the construction work scaffolding base.

Grasping metal fittings 6a such as clamps are provided on both sides of the scaffolding plate 6 in the longitudinal direction. When the scaffolding is in use, the grips 6 of the scaffolding plate 6 are respectively attached to the horizontal bars 5 provided at the upper ends of the front and rear columns 1a and 1b.
It is fixed so as not to come off by hanging a, and the scaffolding plate 6 is laid over to form a working floor. Further, the scaffolding plate 6 is hung over the horizontal bar 5 during use, so that the connecting frame 11 to be described later is maintained in a protruding state. When folding the scaffolding,
The scaffolding plate 6 is removed from the scaffolding base by removing the gripping metal 6a from the horizontal bar 5. A non-slip mesh plate or the like is attached on the scaffolding plate 6 so that an operator can rest on it. As the scaffolding plate 6, a commercially available scaffolding plate having a gripping metal or a type having a mechanism for holding a horizontal bar integrally with the scaffolding plate can be used. It is also possible to pass it. In the case of using a scaffolding plate without a grip, the horizontal bar 5 that spans the scaffolding plate and the scaffolding plate may be bound by a wire or the like and fixed so as not to slip. Further, depending on the width of the scaffolding board to be bridged, two or more scaffolding boards are bridged between the front and rear horizontal bars 5. Posts 1a, 1b that hit the four corners of the scaffolding
A locking hole 15 for inserting a handrail is provided at the upper end of the handrail, and the lower end of the handrail 16 is inserted at the upper ends of the columns 1a and 1b in use to prevent the handrail from falling from the workbench. When folding the scaffolding, the handrail 16 is pulled out from the locking hole 15 and removed.

A connecting frame 11 is provided between the front and rear struts 1a and 1b on both sides, and each connecting frame 11 is about half the height of the stanchion, one on each side being in the upper half and the other being in the lower half. Both are arranged so that they do not buffer when folded as described below. The upper and lower ends of both ends of each connecting frame 11 are rotatably connected to brackets 12 provided on the columns 1a and 1b via vertical shafts 13. Further, the connecting frames 11 on both sides are cut at the central portion, and both end portions are rotatably connected via a shaft 14 in the vertical direction at the cut portion,
As shown in FIG. 4, the central portion of the connecting frame 11 is bent inwardly in a V shape so as to be adjacently folded between the two front columns 1a. At this time, a stopper 9 is provided at an outer end portion of the shaft 13 portion so that the shaft 14 portion does not project to the outside of the scaffolding base, thereby restricting the outward rotation of the shaft 13 portion. Then, by removing the scaffolding plate 6 hung between the front and rear horizontal bars 5 and folding the connecting frame 11,
As shown in FIG. 3, it can be folded into a stored state without changing the height. The front and rear struts 1a and 1b are provided with a binding member 17 and a binding receiver 18, respectively, and after folding to a storage state as shown in FIG. 3, the binding member 17 is engaged with the binding member 18 to fold it. The looseness of the state can be prevented, and the engagement can be released to extend the state of use.

Next, the folding type construction work scaffolding base of the second embodiment will be explained with reference to FIG. In this embodiment, two scaffolding bases of the first embodiment are connected to each other, and a total of four columns in the central portion are used as a central column. Two center columns 23 having two columns 21 connected to each other and wheels 22 attached to the two columns are arranged at intervals, and a connecting frame 11 is provided on both sides of the two center columns 23 so as to be foldably connected to each other. . Each connection frame 11
Has the same structure as that of the first embodiment and can be bent so as to be folded as shown in FIG. Further, the same outer pillar 1b as in the first embodiment is connected to the outer end of each connecting frame 11.

Although not shown, a horizontal bar for hanging the scaffolding plate 6 is provided at the upper ends of the front and rear two columns 21, respectively. When the scaffolding base is in use, the horizontal bar provided between the columns 21 and the horizontal bar 5 provided at the upper end between the columns 1b.
Then, the metal fittings 6a of the scaffolding plate 6 are hung on and fixed so as not to come off, thereby forming a working floor. Further, after the scaffolding plate 6 is removed, the connecting frames 11 can be put in a stored state by stacking and folding the connecting frames 11 on the central support column 23. Also each prop 1
The lengths of b and 23 can be adjusted as in the first embodiment.
The other structure is the same as that of the first embodiment.

[0011]

When folding the scaffolding base for construction work according to the present invention, the scaffolding board, which is a floor material, is removed, and the connecting frame is overlapped between the two front columns without changing the height. Since it has been set, the height of the stored state can be lowered and the movement becomes easy. Also, after folding as described above, when expanding to the use state, it is only necessary to stretch the connecting frame and hang the scaffolding board on the horizontal bar between the stanchions, which makes folding work easy. is there. In addition, since the scaffolding base can adjust the length of the support columns, it is possible to support different work heights, and a handrail can be attached on the scaffolding base for safe work. Further, when the scaffolding flooring material and the connecting frame are provided on both sides of the central column, the scaffolding platform having a large area floor can be formed to be foldable.

[Brief description of drawings]

FIG. 1 is a front view of a construction work scaffolding base according to a first embodiment of the present invention.

FIG. 2 is a side view of the construction work scaffolding base according to the first embodiment of the present invention.

FIG. 3 is an explanatory view showing the front surface of the construction work scaffolding base of the present invention in a folded state.

FIG. 4 is an explanatory view showing the upper surface of the construction work scaffolding base of the present invention in a folded state.

FIG. 5 is a front view of a construction work scaffolding base according to a second embodiment of the present invention.

[Explanation of symbols]

 1a prop 1b prop 6 scaffolding board 11 connecting frame 23 central prop

Claims (4)

[Claims] 1. A pillar having a wheel at its lower end is provided at least at four corners in the front, rear, left and right, and two front pillars are connected by a horizontal bar, and two rear pillars are connected by a horizontal bar, A connecting frame having a height of approximately the upper half is provided between the front and rear struts on one side, and a connecting frame having a height of the lower half is provided between the front and rear struts on the other side. In addition to being rotatably connected by a vertical axis, each connecting frame was cut at the center and adjacent parts were rotatably connected by the vertical axis, and were provided at the upper ends between the front and rear columns. A foldable construction work scaffolding stand characterized by being able to construct a floor for work by straddling a scaffold board on a horizontal bar. 2. The foldable construction work scaffolding base according to claim 1, wherein each of the columns is formed of a double cylinder that can be expanded and contracted in the longitudinal direction, and fixing means for fixing the columns to a predetermined length is provided. 3. The foldable construction work scaffolding base according to claim 1, wherein a handrail is detachably provided at an upper end of each pillar. 4. Two center columns having wheels at the lower ends thereof are arranged at intervals, and a coupling frame axially coupled to each of the two central columns so as to be foldable is provided, and an outer end of each coupling frame is provided.
Connecting columns having wheels at their lower ends, at least the upper ends between the central columns are connected by horizontal bars, and at least the upper ends between the outer columns are connected by horizontal bars, and the horizontal lines provided at the upper ends between the columns are connected. A foldable construction work scaffolding stand characterized in that it can be constructed as a work floor by hanging a scaffolding board on a rod.