JPH0323484Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a scaffolding device for work that can be suspended from supports or scaffolding of high-rise buildings.

2. Description of the Related Art Conventionally, various scaffolding devices for work have been proposed, which are suspended from a support or a rope and can be used for riveting, welding, or other work around the support. In general, such scaffolding devices consist of a rectangular horizontal stage, masts that stand up at the four corners of this stage, and suspension members that hook the stage to the supports.The stage is attached to the supports via the suspension members. The above work is performed on the stage while being close to the stage. However, the thickness of the supports varies depending on the building, and when the stage is suspended from the supports, the supports will hit the supports before the end of the stage touches the side of the support, causing the stage and support to be damaged. A gap will occur between the two. If work is carried out under such conditions, there is a risk that tools, sparks during welding, or the worker himself may fall through the gap. Similarly, when the stage is suspended, if the stage is separated from the supports and poles and not tightly attached, the posture of the scaffolding equipment will become unstable and it will swing due to strong winds, making it extremely dangerous to work. The situation was ripe.

On the other hand, it is possible to prevent the stage from shaking by welding or bolting the stage to the above-mentioned pillars or poles after the suspension, or to fill in the gaps with other materials, but this connection work and dismantling work are possible. However, there was a problem that the process was large-scale and troublesome, and the work efficiency was reduced.

This idea was created by focusing on such conventional problems, and the component parts of the scaffolding device such as the work stage and the stilts, when the scaffolding device is suspended on the sills or supports, stick tightly to the stilts or supports. The purpose of this is to eliminate gaps and stabilize the mounting state of the scaffolding device.

In order to achieve this objective, the work is equipped with a stage, a plurality of ladders that stand on the stage, and on which handrails and braces are removably erected, and suspension members that hold each of the above ladders to the structure of the building. The scaffolding device is characterized in that support rods are provided on both sides of the stage and extend parallel to the stage, and the lower part of the mast is slidably and rotatably attached to the support rods.

Embodiments of this invention will be specifically described below with reference to the drawings.

FIGS. 1, 2, and 3 show a scaffolding device that is an embodiment of this invention. In the figure, reference numeral 1 denotes a stage serving as a scaffolding board, the upper surface 1a of which is provided with an uneven pattern to prevent slipping, and the peripheral edge thereof is a flange-like upright piece 1b. Further, a round bar 2 for locking the cover to remove sparks during welding is attached to the inside of the upright piece 1b. In the center of one side of stage 1 above, there is a pillar A of the building.
A U-shaped notch 3 is provided with a size that allows for escape. This cutout 3 may be made deeper or shallower in FIG. 1. Note that a U-shaped reinforcing member 4 is fixed to the cutout of this notch 3. 5
is a reinforcing material that reinforces the lower surface of stage 1. A pair of brackets 6, 7 are fixed to the left and right upper surfaces of the stage 1 at a predetermined distance from each other. Bolts 8 and 9 serving as support rods are inserted in parallel along the stage 1, and are held by nuts 10 and 11 to prevent them from coming off. In addition, each of the above bolts 8 and 9
As shown in FIG. 4, a plurality of through holes 12 and 13 are bored in the shaft portion as a stopper, and a pin 14 is inserted into these through holes 12 and 13 to hold the pin.
is attached to each bracket 6,7 by a chain 15.

Reference numerals 16 and 17 denote a pair of left and right starraps, each of which has a reinforcing frame 1 attached to substantially rectangular L-shaped frames 16a and 17a, respectively.
Consisting of 6b and 17b joined by welding,
Projection piece 16 at the lower end of each of these star straps 16, 17
c, 17c are slidably inserted onto the axes of the bolts 8, 9. In other words, each of the stirrups 16 and 17 is rotatably supported by the bolts 8 and 9, respectively. The above set of starrap 1
6 and 17 are connected by a removable handrail 18 and braces 19 and 20, and are reinforced to prevent each other from falling.

In addition, in the above, the height positions where the bolts 8 and 9 are provided are different as shown in FIG.
Bolt 9 is taller than bolt 8 by starp 16.
It is raised by approximately the thickness H of
When the stage 6 is laid down on the stage 1, the stirrup 17 is superimposed on it almost horizontally.
Thereby, the space occupied by the scaffolding device when folded can be reduced. 21 and 22 are auxiliary straps pivoted on each of the straps 16 and 17;
Handrails 23 and 24 are attached to the upper part of this, and both of these auxiliary straps 21 and 22 are connected by a removable handrail 25.

Reference numerals 26 and 27 indicate hook bolts as suspension members for suspending each of the stirrups 16 and 17 on the pole B. Hooks 26a and 27b are provided at the tips of these bolts, and a screw is provided at the other end. The hook bolts 26 and 27 are attached to each of the stirrups 16 and 17.
It slides freely through the mounting hole. 28, 29
is a wing nut screwed onto the above screw.

In the case of a scaffolding device having such a configuration, as shown in FIGS.
6, 27 are hooked onto the katana B, and then, of the two rear sets of stirrups 16, 17, the surfaces parallel to the katana B are brought into contact with the sides of the pillars A. Next, the bolts 8 and 9 inserted into the lower portions of the above-mentioned braces 16 and 17 are slid on the shafts in the direction of the struts A, whereby the stage 1 held by the bolts 8 and 9 also becomes one. Moving backward, the end face of the notch 3 of the stage 1 comes into contact with the front of the support column A, eliminating the gap between the support column A and the stage 1. Next, a plurality of through holes 1 are provided in each bolt 8, 9 so that the moved position is fixed.
2, 13, the protrusions 16c, 17c are on the side opposite to the column A side, and each of these protrusions 16c, 1
Insert the pin 14 into the one closest to 7c.
In addition, the scaffolding device positioned and assembled to the pillars A and B is connected to the above-mentioned hook bolt 2.
The hook portions 26a and 26b of 6 and 27 are fitted into the wire cap B made of H steel, and the wing nut 28 is screwed into the threaded portion and tightened, thereby being suspended and held on the wire wire B. In this way, the notch 3 of the stage 1 is in contact with the support column A, and the stirrups 16 and 17 are in contact with the casing B at their respective upper parts, so that there is no gap between the stage 1 and the support column A, and the above-mentioned suspended state is extremely maintained. Stabilize. Therefore, tools, sparks, workers, etc. are prevented from falling from the stage, and the scaffolding equipment is also prevented from swinging even if people move on stage 1 while working or are exposed to strong winds. Therefore, the operator can perform welding work etc. with peace of mind.

In addition, if this scaffolding device is no longer needed,
Thumb screw 2 for the hook bolts 26 and 27
Loosen the screws 8 and 29, and remove the hook portions 26a and 29.
26a from the H steel wire B, further loosen the thumbscrew 28, remove it from the hook bolts 26 and 27, and lower it to the ground or to the work place.
Next, the handrails 18, 25 and the brace 19,
20 from each of the stirrups 16, 17 and the auxiliary stirrups 21, 22, and then push down the stirrup 16 to the stage 1 side using the bolt 8 as a fulcrum, and remove the other stirrup 1.
7 and bolt 9 as a fulcrum, the starrup 1 falls down.
6 Layer on top. By doing so, each of the stirrups 16 and 17 is accommodated within the upright piece 1b and reduced to a plate shape. Therefore, transportation and storage can be carried out in a small occupied space.

Note that even if the notch 3 provided on the stage 1 contacts the support column A as described above,
As shown in FIG. 5, gaps G ₁ and G ₂ may be formed between the side surfaces A1 and A2 of the support column A and the end surfaces 3a and 3b of the notch 3 that oppose them. In some cases, sparks, tools, etc. may fall, or the stage 1 may be displaced, making the above-mentioned suspended state unstable. For this reason, the end surfaces 3a, 3 of the above-mentioned notch 3
In b, by making the auxiliary stages 31 and 32 as shown by the dotted lines protrude slidably or rotatably, and by locking the protruding state, it is possible to prevent the suspension state of the stages from deteriorating. In addition, in order to prevent the notch 3 of the stage 1 from easily coming off from the support column A, an auxiliary stage 33 is similarly protruded from the edge of the stage 1 on the side B so that the notch 3 becomes deep. I can do it. In addition,
This auxiliary stage 33 can also be provided slidably or rotatably with respect to the stage 1. Moreover, by providing such auxiliary stages 31, 32, and 33, the scaffolding area can be expanded and the work can be made easier.

FIG. 6 shows another embodiment of the present invention, in which a support rod 9a is installed on a projecting piece 17c of a starrup, a bracket 7 is slidably inserted into this support rod 9a, and the bracket 7 is inserted at an arbitrary position. The function and effect are substantially the same as those shown in Figs. 1 to 3.

According to the present invention, there are the following effects.

Since the lower part of the starrup is slidably attached to the support rod provided on the stage, the starrup can be moved with respect to the stage, or the stage can be moved with respect to the starrup as desired. For this reason, when the scaffolding device is facing the pole and the pole, even if the starrap hits the pole, only the stage can be moved to the pole, and conversely, if the stage hits the pole first, only the starrap can be moved to the pole. Therefore, there will be no gaps between the scaffolding device and the scaffolding and supports. Therefore, welding work can be made easier and safer.

Further, since the stirrup is rotatably attached to the support rod, the stirrup can be rotated using the support rod as a fulcrum and folded compactly onto the stage.

If a plurality of through holes are provided in the support rod and a stopper mechanism is provided for inserting pins into the through holes, the position of the strap can be adjusted and fixed as desired.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the scaffolding device of this invention, Fig. 2 is a partially cutaway front view, Fig. 3 is a partially longitudinal side view, and Fig. 4 is the relationship between the stage and the ladder. FIG. 5 is a plan view, and FIG. 6 is a partially longitudinal side view of another embodiment. 1... Stage, 3... Notch, 8, 9, 9a...
...Support rod, 13...Through hole, 14...Pin, 16...
...Startup, 18,25...Handrail, 19,2
0... Brace, 26... Suspension member.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A stage, a plurality of straps erected on the stage and having handrails and braces removably installed thereon, and a suspension member for holding each of the straps to the structure of the building. A work scaffolding device equipped with the above-mentioned stage is characterized in that support rods are provided on both sides of the stage and extend parallel to the stage, and the lower part of the ladder is attached to the support rods so as to be slidable and rotatable. Scaffolding equipment for work. (2) Claim 1 of the Utility Model Registration Claim, comprising: a pair of support rods for attaching a starrup provided at mutually opposing positions on the stage, one of which is provided at a position higher than the other by approximately the thickness of the starp; Scaffolding device for work described in. (3) The work scaffolding device according to claim 1, wherein the suspension member is a hook bolt. (4) The work scaffolding device according to claim 1 of the utility model registration claim, wherein the support rod is a bolt.