JPH07145663A - Scaffold - Google Patents

Abstract

PURPOSE:To obtain scaffolds that can be installed safely in a short time. CONSTITUTION:A scaffold lower framework 10, constructed of a front frame material 11, a rear frame material 12 and both side frame materials in a rectangular framework, and a scaffold upper framework 20, constructed likewise in a rectangular framework, are connected with upright posts 3 that are hinged at their lower ends to both of the side frame materials 13a, 13b of the scaffold lower framework 10 with the central axes of the side frame materials as their axes for rotation and hinged also at their upper ends to both of the side frame materials 23a, 23b of the scaffold upper framework 20 with the central axes of the side frame materials as their axes for rotation. A driving mechanism 4 is mounted to an appropriate position on the scaffold lower framework 10, and the driving member of the driving mechanism 4 is connected to one or more of the upright posts 3, and thereby the upright posts are made to be available for rising and falling.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to scaffolds installed at construction and construction sites.

[0002]

2. Description of the Related Art Conventionally, the prefabricated scaffold shown in FIG. 10 has been most widely used. This prefabricated scaffold includes a gate-shaped building frame member 100 and adjacent building frame members 100,
The bracing member 101 that connects the 100 in a stacking shape, and the scaffolding frame member 102 horizontally bridged over the adjacent building frame members 100, 100 are used.
0s standing side by side at regular intervals and adjacent to each other
By assembling the brace members 101, 100 into the 0, 100 and mounting the scaffolding frame member 102, assembling is carried out as shown in the drawing.

[0003]

However, in the above-mentioned conventional assembly-type scaffold, each member is as heavy as about 20 to 30 kg (the building frame member 100 is 17 to 30 kg), and the operator carries each of these members one by one. Since it is assembled in, the scaffolding work is not only difficult work, but also has the problem that since it operates a heavy object at a high place, it loses balance and there is a risk of crashing.

Further, the conventional method in which the worker assembles each member one by one as described above has a problem that it takes time to assemble and disassemble the member, which is a major obstacle to shortening the construction period. It is a thing.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a scaffold that can be safely installed in a short time.

[0006]

In order to solve the above-mentioned problems, the structure of the present invention based on the above-mentioned claims has been achieved in order to solve the above-mentioned problems. 1
Lower scaffolding frame body 10 configured in a rectangular frame shape with 3a and 13b
Similarly, the front frame member 21, the rear frame member 22, and both side frame members 23a,
23b and the scaffolding upper frame body 20 configured in a rectangular frame shape, the lower end portions are both side frame members 13a and 13b of the scaffolding lower frame body 10.
The center axis of the side frame members 13a and 13b is pivotally attached to the side frame members 23a and 23b of the scaffolding upper frame body 20 and the center axis of the side frame members 23a and 23b is the center of rotation. Vertical rail members 3, 3, 3, which are pivotally attached as shafts, respectively.
3, and the drive mechanism 4 is provided at an appropriate position of the scaffolding lower frame body 10.
The drive member of the drive mechanism 4 and the vertical rail member 3,
The technical means for connecting the vertical cross-members 3, 3, 3, 3 to the back and forth by connecting any one or more of the 3, 3, 3 is provided.

[0007]

Therefore, in the scaffold of the present invention, when the vertical scaffold members 3, 3, 3, 3 are not used, the vertical scaffold members are rotated to the down position as shown by the arrow P1 in FIGS. deep. Then scaffolding lower frame 10
And the upper frame 20 of the scaffold come close to each other, and the whole is in a flat state.
In this state, storage and transportation are performed, and when used, the drive mechanism 4 is operated to elevate the vertical rail members 3, 3, 3, 3 in the direction opposite to the arrow P1. , 3, 3 are erected, and the vertical rail members 3, 3, 3, 3 and the scaffolding lower frame 10 and the scaffolding upper frame 20 form a cube as shown by the solid line in FIG. It exhibits an action that can be used as the constituent piece 200.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. In the figure, 10 is a scaffolding lower frame, and this scaffolding lower frame 1 is constituted by a front frame member 11, a rear frame member 12, and both side frame members 13a and 13b in a rectangular frame shape. The front frame member 11, the rear frame member 12, and the both side frame members 13a, 1
It is the same as in the conventional art that 3b is preferably made of a pipe material in order to reduce the weight.

The scaffolding lower frame 10 is constructed so that the front frame member 11, the rear frame member 12, and the both side frame members 13a and 13b are fixed to each other so that they cannot be deformed. Further, the illustrated example shows one component piece 200 of the scaffold, and a suitable number of the component pieces 200 may be connected in advance in the lateral direction. In this case, although not shown, the scaffolding lower frame body Reference numeral 10 designates a long (9 m in the example) front frame member 11 and a rear frame member 12 arranged in parallel, and the side frame members 13a, 13b, at fixed intervals (1.8 m interval in the example) between them. 13c ... are connected in a ladder shape, or a plurality of side frame members 13a, 13b, 13c ... Are juxtaposed in parallel at a predetermined interval, and the side frame members 13a, 13n at both ends are front frames on both sides. The member 11 and the rear frame member 12 are fixed, and the other side frame members 13b, 13c, 13d, ... 13n-1 are fixed on the left and right sides of the front frame member 11 and the rear frame member 12, respectively. Good.

In the figure, 20 is a scaffolding upper frame, and this scaffolding upper frame 20 is composed of a front frame member 21, a rear frame member 22, and both side frame members 23a, 23b, like the scaffolding lower frame member 10. It has a rectangular frame shape. The scaffolding lower frame body 10 and the scaffolding upper frame body 20 have the same frame shape (except for an attachment mechanism described later) in shape and size.

The lower end portion between the scaffolding lower frame body 10 and the scaffolding upper frame body 20 has lower end portions on both side frame members 13 of the scaffolding lower frame body 10.
The central axes of the side frame members 13a and 13b are pivotally attached to the a and 13b, and the upper end portions of the scaffolding upper frame body 20 have upper ends.
The side frame members 23a, 23b on both side frame members 23a, 23b
Are connected by vertical rail members 3, 3, 3, 3 which are pivotally attached to each other with the central axis of the above as the central axis of rotation.

That is, the scaffolding lower frame body 10 and the scaffolding upper frame body 20 are arranged vertically with a predetermined distance, and the space between them is connected by the vertical rail members 3, 3, 3, 3. As shown in FIG. 4, the structure of the pivoting portions at the upper and lower end portions of the vertical rail members 3, 3, 3, 3 is shown in FIG.
An arm portion 31 having a protrusion is provided, the arm portion 31 is positioned on the side of the side frame member 13a, and the tip of a pivot shaft 33 that passes through the pivot hole 32 is fitted and fixed in the side frame member 13a. However, it is needless to say that this pivoting mechanism may be replaced with another conventionally known method.

The lower surface side of the scaffolding lower frame body 10 and the upper surface side of the upper scaffolding frame body 20 are provided with a connecting one side 6a and another connecting side 6b, which can be inserted into and removed from each other, to form the component piece 20.
It is the same as the conventional one that the connecting one side 6a of 0 is inserted and connected to the connecting other side 6b of another constituent piece 200 to be connected thereon so that the constituent pieces 200 can be sequentially connected upward. is there.

Reference numeral 7 is a bracing member for restraining the vertical bar members 3, 3, 3, 3 from lying down. In the illustrated example, this bracing member 7
Is composed of front frame members 11 and 21 and a pair of front vertical rail members 3 and 3, and rear frame members 12 and 22 and a pair of rear vertical rail members 3 and 3. Brace attachment pieces 70, 70, 70 ... Having brace insertion holes 71 (see “FIG. 9”) are provided near the respective corners of the rear side frame portion to be .. are attached, but the brace member 6 may be the conventional brace member 101 shown in FIG.

A drive mechanism 4 is attached to an appropriate position of the scaffolding lower frame body 10, and the drive member of the drive mechanism 4 and any one or more of the vertical rail members 3, 3, 3, 3 are connected. The vertical rail members 3, 3, 3, 3 can be driven to lie down.

The specific structure of the drive mechanism 4 is as follows.
"Figure 6" example, attach the machine box 40 to the scaffolding lower frame 10,
The machine box 40 includes a drive operation shaft 4 which is driven and operated by a wrench or the like.
The rotation of 1 is transmitted to the worm 42 via the reduction gears 41a and 41b, and the worm foil 43 meshing with the worm 42 is accommodated therein. The shaft 44 of the worm foil 43 serves as a driving member.

In the example shown in FIG. 7, a part of the drive operation shaft 41, which is operated by a wrench or the like, is used as the worm 42, and the shaft 44 of the worm foil 43 is used as a drive member as shown in FIG. It is almost the same. In this "FIG. 7" example, a ratchet board 45 is attached to the drive operation shaft 41, and the ratchet board 45 to the worm 42 are not always reversible by the ratchet pawl 46, and the ratchet pawl detachment button 47 is pressed. Ratchet board 45 to worm 4 only when played
2 can be reversed.

In the example shown in FIG. 9, a manual hydraulic jack 4a is used as the drive mechanism 4. One end of the manual hydraulic jack 4a is pivotally attached to the scaffolding lower frame 10 and the rod tip is in any longitudinal direction. The crosspiece member 3 is pivotally attached to the upper and lower middle portions thereof.

In the examples of FIG. 6 and FIG. 7, both ends of the shaft 44 of the worm foil 43 are passed through the both side frame members 13b as shown in FIG. The lower ends of the vertical rail members 3, 3 are fixed to the shaft 44, and when the shaft 44 rotates, the vertical rail members 3, 3 lie down and up. Further, in the example shown in FIG. 9, the vertical rail members 3 and 3 are moved back and forth by moving the rod of the manual hydraulic jack 4a forward and backward.

[0020]

Since the scaffold of the present invention is as described above,
When not in use, it can be flattened to make effective use of the storage space.
At the time of use, it is conveyed in a flat state, and it is conveyed to an installation position by an appropriate transportation means such as a crane. When it is installed at the installation place, the drive mechanism 4 is operated to operate the vertical rail members 3, 3, 3.
It is only necessary to erect 3 and 3, and it is possible to apply a scaffold that can be assembled in a short time and without any troublesome work.

Further, according to the present invention, an operator can carry out a heavy work like the conventional work by only supporting the flattened scaffolding carrying device of the present invention, operating the drive mechanism 4, and attaching the bracing member 6. Since it is not necessary, it is possible to provide a safe scaffold for the assembly in which there is little risk of losing balance and falling at a high place.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an embodiment of the scaffold of the present invention.

FIG. 2 is a front view showing an embodiment of the scaffold of the present invention.

FIG. 3 is a front view illustrating the operation.

FIG. 4 is an enlarged cross-sectional view taken along the line AA of “FIG. 2”.

FIG. 5 is a side view.

FIG. 6 is a front view of a drive mechanism used in the present invention.

FIG. 7 is a front view of another embodiment of the drive mechanism used in the present invention.

FIG. 8 is an enlarged sectional view taken along line BB of “FIG. 2”.

FIG. 9 is a front view of another embodiment.

FIG. 10 is a perspective view illustrating how to assemble a conventional scaffold.

[Explanation of symbols]

 3 Vertical cross member 4 Drive mechanism 10 Scaffolding lower frame body 11 Front frame material 12 Rear frame material 13a Side frame material 13b Side frame material 20 Scaffolding upper frame body 21 Front frame material 22 Rear frame material 23a Side frame material 23b Side frame material

Claims (1)

[Claims] 1. A scaffolding lower frame body (10) formed in a rectangular frame shape by a front frame member (11), a rear frame member (12), and both side frame members (13a, 13b), and also a front frame member (21). ) And rear frame material (2
2) and both side frame members (23a, 23b) between the scaffolding upper frame body (20) configured in a rectangular frame shape, the lower end portion of the scaffolding lower frame body (10) on both side frame members (13a, 13b). The side frame members (13a, 13b) are pivotally attached to each other with the central axis of the side frame members (13a, 13b) as the rotation central axis, and the upper end portions of the scaffolding upper frame body (20) are provided on both side frame members (2
3a, 23b) and the vertical rail members (3, 3) pivotally attached to the side frame members (23a, 23b) with the center axis of the side frame members (23a, 23b) as the rotation center axis.
(3, 3, 3), a drive mechanism (4) is attached to the scaffolding lower frame body (10) at an appropriate position, and the drive member of the drive mechanism (4) and the vertical rail member (3, 3, 3, 3). A scaffold capable of driving the vertical cross-members (3, 3, 3, 3) to lie down while being connected to any one or more of 3).