JPH0246597Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] The present invention allows the scaffolding board to be placed horizontally and The present invention relates to a scaffold board mounting device that can be mounted so as not to shift laterally.

[Background technology]

To work on the ceiling, walls, etc. of staircases, etc., use scaffolding, for example, with scaffolding boards strung between the crossbars of a stepladder, etc. installed on the upper floor, and the crossbars of a ladder, etc. installed on the top of the stairs. However, there is usually a difference in height between the crossbars, which makes the scaffolding boards tilted and unstable, and there is sometimes a risk that the scaffolding boards will slip or fall off due to lateral displacement.

[Purpose of invention]

The present invention solves the above-mentioned problem by providing a base frame that is attached to a horizontal beam with a receiving part that supports the scaffold board so that it can be raised and lowered, and by attaching the scaffold board horizontally and so that it cannot shift laterally, it prevents it from falling off. The purpose of this invention is to provide a scaffold board mounting device that can solve the problem.

[Disclosure of invention]

Below, the scaffold board mounting device 1 of the present invention is installed in a staircase room R.
Taking as an example the case in which the present invention is used to form a work scaffold A installed for performing work on ceilings, walls, etc., one embodiment will be described based on the drawings.

In the figure, the scaffold board attaching device 1 is a ladder-like body 2.
A support rod 7 whose lower end is latched to another crosspiece 3B at the lower end is pivotally attached to a base frame 5 hooked to one crosspiece 3A, and a receiving portion 10 on which a scaffold board B can be placed is provided. A support rod 11 is attached to the base frame 5 so as to be movable up and down.

In this example, the ladder-like body 2 is a ladder L placed on a step plate at the bottom end of a staircase S and leaning against a wall surface W toward which the staircase S faces, and includes a scaffold board attachment device 1 attached to the ladder L. , the work scaffold A is formed in the stairway R by spanning a scaffold board B between it and a stepladder F installed on the upper floor U.

Note that the ladder L has rungs 3 installed in multiple stages between parallel side beams, and the stepladder F has rungs 4 installed in multiple stages, and the upper ends of ladder bodies C and C are pivoted so as to be openable and closable. using things.

The base frame 5 is a U-shaped frame in which a pair of side frame members 15, 15 extending rearward are welded to both ends of a front frame member 13, and a hook 20 is attached to the rear end of the side frame member 15. Installed. The hook 20 has a U-shape in which linear parts 19, 19 parallel to the circular arc part 17 extend, and is welded to the side frame member 15 with the open end of the groove part tilted downward and forward. The hook 20 is attached to the rung 3 of the ladder L...
Of these, one crosspiece 3A that is close to the height of the scaffolding board B is inserted into the groove and hooked.

In addition, a support rod 7 is provided at the center of the lower surface of the front frame member 13 of the base frame 5.
A hanging piece 22 for installation is installed below.

The support rod 7 is provided with a fixture 25 at the upper end of a base 23 made of a hollow round steel tube with both ends closed, and a locking member 27 at the lower end.

The fixture 25 is attached to the base body 23 as shown in FIG.
The hanging piece 2 is attached to the outer end of the insertion portion 39 passing through the upper end of the
2 is provided with a U-shaped portion 33 supported by a pin,
A disc-shaped head 37 is provided at its inner end to prevent it from coming off. Further, the locking tool 27 has a threaded shaft 43 which is screwed into a nut 41 fixed to the inner surface of the lower end of the base body 23.
A U-shaped fitting piece 40 is joined to the outer end of the housing with the groove thereof opening outward.

Therefore, the support rod 7 can freely tilt in a plane perpendicular to the axis of the front frame member 13, and the support rod 7 expands and contracts as the locking tool 27 is screwed into and out of the nut 41.

Also, the support rod 7 is set to a length that allows the locking tool 27 to be locked to another crossbar 3B located below, for example, at the lower level, of the crossbar 3A on which the base frame 5 is hung among the crossbars 3. Also, the base frame 5 can be held horizontally by its expansion and contraction.

The support rod 11 has a receiving piece 49 having upward projecting pieces 51, 51 raised at both ends thereof, at the upper end of a screw shaft 47 screwed into a threaded cylinder 45 vertically attached to the front surface of the front frame member 13. It's stuck. The receiving piece 49 is wider than the scaffolding board B, and the projecting piece 51 prevents the scaffolding board B from falling off due to lateral movement.
0 allows the scaffolding board B to be placed without being able to shift laterally. Further, the support rod 11 can be raised and lowered as its screw shaft 47 rotates.

As described above, the scaffold board attaching device 1 hooks the hooks 20, 20 at the rear end of the base frame 5 to one crosspiece 3A, and also hooks the hooks 27 at the lower end of the support rod 7 to the other crosspiece 3B at the lower level. It can be attached to the ladder L by locking it.

The support rod 7 horizontally holds the base frame 5 by its expansion and contraction.
Therefore, the threaded cylinder 45 can be kept vertical.

Further, the support rod 11 is rotated so that its receiving portion 1
0 is the crosspiece 4 of the stepladder F that supports the other end of the scaffold board B
By adjusting the height to be the same as that of
A safe work scaffold A can be formed which includes a scaffold board B which is placed on the receiving part 10 so as not to be displaced laterally and is attached horizontally.

Note that the scaffold board attaching device 1 of the present invention is a stepladder F.
It can be attached to various ladder-like bodies having upper and lower rungs.

[Effect of idea]

As mentioned above, the scaffold board mounting device is capable of raising and lowering the height by attaching a support rod having a receiving part on which the scaffold board can be placed without being able to move horizontally to the base frame that is hung on the rungs of the ladder-like body. Scaffolding boards can be installed horizontally even between crosspieces that have a difference between them, and there are many effects such as being able to form a safe and easy-to-work scaffold.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing an embodiment of the present invention together with its use condition, Fig. 2 is an enlarged perspective view of the scaffold board attachment device, Fig. 3 is a side view showing its operation, and Fig. 4. is a sectional view showing the support rod. 2...Ladder-shaped body, 3...Runway, 3A...One rung, 3B...Other rungs, 5...Base frame, 7...Support rod, 10...Receiver, 11...Support rod, A...Work scaffold, B...Scaffolding board, F...Stepladder, L...Ladder,
S...stairs, U...upper floor.

Claims (1)

[Scope of utility model registration request] The upper end of a telescoping support rod, whose lower end is locked by another rung below, is pivoted to the base frame that is hung on one rung of the ladder-like body, and the scaffolding board is placed so that it cannot shift laterally. A scaffolding board mounting device comprising a support rod having a removable receiving portion at the upper end, which is attached to the base frame so as to be movable up and down.