JPH07173927A - Folding type scaffolding board for building work - Google Patents

Abstract

PURPOSE:To facilitate a carrying work by holding down the folding height of a scaffolding board for building work and to facilitate a work for expanding the same in the using state. CONSTITUTION:Front two supports 1a of supports provided on four, front and rear and left and right corners are connected to each other by a lateral rod, the rear two supports 1b are connected to each other by a lateral rod, and one side front and rear supports 1a, 1b are connected to each other by a turnable connecting frame 15. One end part of front and rear ends of a quadrangle scaffolding board frame 8 taking the upper parts of four supports as the vertexes is connected to the vicinity of the upper part of the support by a horizontal shaft 10, and the other end of the scaffolding board frame 8 is provided with a locking piece 13 locked on the upper part of the support on the side.

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 the carrying, and to facilitate the work of expanding the storage state and the use 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. The two rods on the rear side are connected by a rod and a horizontal rod is connected between the two columns on the rear side, and a connecting frame configured to be bendable with a plurality of vertical axes as fulcrums is arranged between the front and rear columns on one side. Both ends are axially connected to the column by a vertical axis.
Also, one of the front and rear ends of a rectangular scaffolding underframe having the tops of the four columns as vertices is rotatably connected to the vicinity of the upper part of the column via a horizontal axis, and the other side of the scaffolding underframe is connected. A locking piece for removably locking the upper part of the column is provided at the end of the scaffold, and the scaffolding base frame is pivoted downward with the horizontal axis as the central axis by bending and folding the connecting frame. The feature is that it can be lowered.

Each strut is formed of a double cylinder which can be expanded and contracted 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 end are arranged at intervals, and a connecting frame is provided on both sides of one of the central 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 pillar members having a structure in which the two pillars are connected to the same width as the two central pillars are connected, and one end of the scaffolding floor frame is connected to both sides of the two central pillars by a horizontal axis, respectively. At the outer edge of the scaffolding floor frame,
A locking piece for locking the support member at the outer end of the connecting frame is provided. In addition, the scaffolding underframe is formed in a rectangle with long sides in front and back, and the two columns located at both ends of the short sides on both sides are connected by a connecting frame, respectively, and the long sides at the rear end of the scaffolding underframe are connected. It is also possible to connect both ends of the shaft to the column by means of horizontal shafts.

[0006]

When the folding construction work scaffolding base of the present invention is folded, the locking piece of the scaffolding floor frame is removed from the state of being connected to the supporting column and lifted a little, and then the connecting frame is directed toward the center or the inside thereof. Fold the two pillars on the front side so as to be adjacent to each other and overlap each other around each axis. When the connecting frame is folded, the two rear columns also move toward the front column together with the rear end of the connecting frame. Furthermore, by rotating the scaffolding floor frame around the horizontal axis to which it is connected and lowering it down, it can be stored at the same height as before folding, and it can be easily moved by the wheels at the bottom of each column. Can be made.
In addition, when expanding the stored folding foldable scaffolding platform to the usable state, rotate the scaffolding floor frame around the horizontal axis connecting it and lift it up, and then fold the connection in that state. The scaffolding base can be put in use by overhanging the frame and locking the locking piece provided on the scaffolding floor frame on the upper part of the overhanging side column.

When changing the height of the scaffold, the length of each of the double-pillar columns is adjusted by removing the fixing means, and then the length of the columns 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 connecting frames and scaffolding flooring are provided on both sides of the center column, fold the connecting frames on both sides of the center column as described above and then store the scaffolding floor frames on both sides by rotating them around a horizontal axis. Put in a state. In addition, when the scaffolding floor frames on both sides are lifted to near horizontal as in the above, the connecting frames on both sides are extended and the locking pieces of each scaffolding floor frame are locked to the upper parts of the columns at the outer position.

[0008]

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. Further, wheels 5 are attached to the lower ends of the columns 1a and 1b via a free shaft 4 so as to face in any direction, thereby facilitating the movement of the construction work scaffolding base. Two pillars 1a on the front side are connected by a plurality of horizontal bars 5b, and two pillars 1b on the rear side are connected by a plurality of horizontal bars 5b. It works as a ladder when going up. The horizontal bar 5b connects the outer cylinders of the support columns, but the lower ends of the inner cylinders are connected by the horizontal bar 5a.

A horizontal support frame 6 is mounted on the two front columns 1a, and the horizontal support frame 6 and the front column 1a are attached.
The stay 7 is connected by a stay 7 to increase the strength for holding the horizontal support frame 6 horizontally. 4 columns 1a, 1
A substantially rectangular scaffolding underframe 8 having an apex at the upper part of b is arranged on the upper part of the four columns, and the side surface of the scaffolding underframe 8 on the front side is attached to the horizontal support frame 6 via the bracket 9 in a horizontal axis. 10
It is rotatably connected so that it can be rotated from a horizontal use state to a vertically stored state. In addition, scaffolding frame 8
The front side is supported by the horizontal support frame 6 via the shaft 10, and the rear side is supported by the two rear columns 1b. In the present embodiment, the scaffolding base frame 8 has a lattice-shaped frame on which a punch metal, a wire mesh, or the like is mounted, and an operator can be placed thereon. However, the scaffolding base frame 8 may be composed of only the surrounding frames, and a plurality of rectangular scaffolding plates may be spanned between the surrounding frames to form the scaffolding floor. In that case, at both ends of the scaffolding board,
A hook for locking the frame is provided so that the hook can be fixed to the frame.

A locking hole 11 for pointing the handrail is provided in the peripheral portion of the scaffolding base frame 8, and the lower end of the handrail 12 is fitted into the locking hole 11 on the upper surface of the scaffolding base frame 8 in use, so that the scaffolding base is It is designed to prevent falling from the frame. When folding the scaffolding, the handrail 12 is pulled out from the locking hole 11 and removed. In addition, locking pieces 13 are provided on both sides of the rear end of the scaffold underframe 8.
Is provided, and the locking piece 13 is provided on the upper ends of the two columns 1b on the rear side.
Is provided, and when the scaffolding base is in use, the locking piece 13 is inserted into the engagement hole 14 and the connecting frame 11 to be described later is maintained in a protruding state. Then, when the scaffolding underframe is folded into the stored state, the locking piece 13 is pulled out from the engaging hole 14.

A connecting frame 15 is provided between the front and rear columns 1a and 1b on one side. The connecting frame 15 has almost the same height as the outer cylinder of the column 1a.
It is rotatably connected to a bracket 16 provided on a and 1b through a vertical shaft 17. Further, the connecting frame 15 is cut at the central part, and both parts are cut in the vertical direction at the cut portion.
8 is rotatably connected, and the central portion of the connecting frame 15 is bent inward as shown in FIG.
It is adapted to be folded so as to be adjacent between the columns 1a of the book. After the connection frame 15 is folded, the scaffolding underframe 8 is rotated around the horizontal axis 10 and the rear end portion is lowered, so that the scaffolding underframe 8 can be stored without changing the height as shown in FIG. Can be folded.

The front and rear stanchions 1a and 1b are provided with a binding member 19 and a binding member 20, respectively. After folding the binding member 19 into the stored state as shown in FIG.
By engaging with 0, loosening in the folded state can be prevented, and by releasing the engagement, it becomes possible to expand the use state. Further, stoppers (not shown) are provided at the shaft connecting portions at both ends of the connecting frame 15 to prevent the connecting frame 15 from being bent in an outward V-shape when the connecting frame 15 is folded. In the above-described embodiment, the base end portion of the scaffolding underframe 8 in the stored state projects upward from the upper surface of the scaffolding platform as shown in FIG. 3, but the scaffolding underframe 8 is connected to the shaft 10 in order to eliminate the projection. It may be formed so as not to have a front side of the portion, and a floor material such as a wire mesh or punch metal may be fixedly provided inside the horizontal support frame 6.

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. A connection in which two pillars 21 are connected to each other and two central pillars 23 having wheels 22 attached to the lower part thereof are arranged at intervals, and the central pillars 23 on one side are axially connected to each other so as to be foldable. Place the frame 15,
One end of the connecting frame 15 is axially connected to the central support column 23 by a vertical axis. Each connecting frame 15 has the same structure as that of the first embodiment, and can be bent so as to be folded as shown in FIG. In addition, one end of a pillar member in which two pillars 24 are connected by a horizontal bar so that the two pillars 24 are arranged at the same intervals as the central pillars on both sides is axially connected to the outer end of each connecting frame 15. Wheels 5 are provided at the lower ends of the columns 24.

Horizontal support frames 6 are attached to the upper parts of the two central columns 23, and one end of a scaffolding underframe 8 is axially connected to each of the horizontal supporting frames 6 by a horizontal shaft 10 so that each scaffolding underframe 8 is connected. It can be rotated around the shaft 10 to change between a horizontal state and a vertical state. Further, similarly to the first embodiment, a locking piece 13 for locking the pillar 1b at the outer end of the connecting frame 15 is provided at the outer end of each scaffold underframe 8, and the locking piece 13 is the pillar 1b.
It is adapted to be locked in the engaging hole 14 in the upper part of the. Then, after overlapping the connection frames 15 on the central support column 23 and folding them, the scaffolding underframes 8 on both sides are rotated around the horizontal axis 10 to lower the outer ends of the scaffolding underframes 8 to a storage state. can do. Incidentally, the scaffolding underframe 8 may be one in which a wire mesh or punch metal is provided in the surrounding frame as in the first embodiment,
Alternatively, a scaffolding floor may be constructed by arranging a plurality of scaffolding plates on the surrounding frame. Further, similarly to the first embodiment, the front end position of the scaffolding base frame 8 may be up to the position of the axis 10 in the horizontal direction, and the wire mesh or punch metal may be fixedly provided in the horizontal support frame 6.

Next, the folding type construction work scaffolding base of the third embodiment will be explained with reference to FIG. In this embodiment, the scaffolding underframe of the first embodiment is formed into a rectangle having long sides on the front side and the rear side, and two columns located at both ends of the short sides on both sides are connected by a connecting frame. Even when the connecting frames on both sides are folded at the same time, they are arranged on the short sides of the scaffolding underframe so that they do not interfere with each other. In this case, the scaffolding base frame 31 is formed in a rectangular shape whose front and rear sides are long sides, and the two columns 32 located at both ends of the short sides on both sides are axially connected by the same connecting frame 15 as in the first embodiment. Further, both ends on the rear side of the scaffolding base frame 31 are axially connected to the horizontal support frame 6 by a horizontal shaft 10, so that the scaffolding base frame 8 is in a horizontal use state and in a vertical state as shown in FIG. 6C. It can be changed to the stored state. Further, similarly to the first embodiment, the two columns 32 on the front side are connected by the horizontal bar 5b, the two columns 32 on the rear side are connected by the horizontal bar 5b, and the scaffolding underframe 3
A locking piece 13 is provided at the front end of 1 and can be locked at the upper part of the front pillar. The other constructions are similar to those of the first embodiment, and the same construction in FIG.
The same reference numerals as in the embodiment are attached. Each of the columns 32 is expandable and contractible and also has a fixing means. Further, the scaffolding bases of the third embodiment can be connected to each other as in the second embodiment.

[0016]

According to the scaffolding base for construction work of the present invention, when the folding frame is folded, the connecting frame is adjacently stacked between the two front columns without changing the height, and the scaffolding frame connects the two. Since the tip portion is lowered downward about the horizontal axis, the height of the housed state can be lowered and the movement is easy. When the scaffolding underframe is folded around as described above and then opened to the use state, the scaffolding underframe is rotated around its connecting shaft to be in a horizontal state, and then the connecting frame is stretched and provided on the scaffolding underframe. Simply insert the locking piece into the engagement hole on the top of the column,
Folding and overhanging work is easy. Also, since the scaffolding base can adjust the length of the pillar, it can support different working heights,
In addition, a handrail can be attached on the scaffolding table 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 of the construction work scaffolding base of the present invention in a folded state.

FIG. 4 is a plan view showing a folded state of the connecting frame of the construction work scaffolding of the present invention.

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

FIG. 6 is a front view (a) of a construction work scaffolding base according to a third embodiment of the present invention and a plan view (b) showing a folded state of a connecting frame.
And (a) is a side view of the state.

[Explanation of symbols]

 1a prop 1a prop 8 scaffolding base frame 12 handrail 15 connecting frame

Claims (5)

[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, Between the front and rear struts on one side, a connecting frame that is configured to be bendable with a plurality of vertical axes as fulcrums is arranged, and both ends of the connecting frame are axially connected to the stanchions, and the tops of the four struts are apexes. One of the front and rear ends of the square scaffold underframe is rotatably connected to the vicinity of the upper part of the column via a horizontal axis, and the other end of the scaffold underframe has the upper part of the column on that side. A locking piece for removably locking is provided, and the scaffolding base frame can be rotated downwards about a horizontal axis as a center axis by bending and folding the connecting frame. Folding construction work scaffolding platform. 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 on an upper surface of the scaffolding floor frame. 4. Two central stanchions having wheels at the lower end are arranged at intervals, and on both sides of one central stanchion, respectively.
One end of a connecting frame configured to be bendable with a vertical axis as a fulcrum is axially connected by a vertical axis, and two columns having wheels at the lower ends are attached to the outer ends of each connecting frame at the center of the two columns. The pillar members having the same width as the pillars are connected, and one end of the scaffolding floor frame is connected to both sides of the two central pillars by a horizontal axis, and is connected to the outer ends of the scaffolding floor frames on both sides. A locking piece for locking the pillar member at the outer end of the frame is provided, and after folding the connecting frames on both sides on the central pillar, the scaffolding floor frames on both sides are pivoted around a horizontal axis. A foldable construction work scaffolding stand characterized by its outer edge being able to be lowered. 5. A column having wheels at its lower end is provided at four apexes of a rectangle having long sides on the front side and the rear side, two columns on the front side are connected by a horizontal bar, and two columns on the rear side are connected. The struts are connected by a horizontal bar, and a connecting frame configured to be bendable is arranged between the front and rear struts on both sides, and both ends thereof are axially connected to the struts,
A scaffolding frame of a size that covers it is placed in the upper part surrounded by four columns, and the rear part is axially connected to the upper part of the two columns on the rear side via a horizontal axis. The front end of the frame is provided with a locking piece for removably locking the upper part of the two front columns, and the connecting frames on both sides are folded to rotate the scaffolding base frame downward with the horizontal axis as the central axis. A foldable construction work scaffolding stand that can be lowered and lowered.