JPH052737Y2 - - Google Patents

Description

[Detailed description of the invention] A. Purpose of the invention a. Industrial application field This invention relates to a special scaffold for use in staircases in buildings under construction.

b. Conventional technology and its problems a.Currently, work is done by fixing wooden scaffolding boards to stepladder scaffolding. (Be careful of safety issues such as trouble and falling, and use tools.
Experience work) Build a sloped scaffold with round pipes.

For this reason, skilled workers are required for assembly and disassembly. (Securing specialists) Cut the materials on hand to fit the work space.

A wrench, spanner, etc. is required.

C. It is impossible to transport the item.

B. Structure of the invention a Means for solving the problem The present application attempts to solve the above-mentioned problem with the following structure. That is, the object of the present application is a special scaffold for working in stairwells, which is composed of a pair of left and right folding scaffolds 2, 2, a cloth board 3, and a sliding scaffold board 4, which have the following requirements. The scaffold 2 consists of left and right supporting legs 2A, 2B, and the left supporting leg 2A is connected to the left front supporting leg 2A.
1. It is composed of a left rear support leg 2A2 and upper, middle and lower connecting rods 2A3 that connect them, and the right support leg 2B is composed of a right front support leg 2B1 and a right rear support leg 2B.
The left and right support legs 2A, 2B are foldably connected by front and rear brace members 2C, 2D, and the cloth board 3 is a flat surface. Consisting of a rectangular frame 3A and a plate 3B stretched over the frame 3A, the upper connecting rod 2 protrudes from the left and right end surfaces of the frame 3A.
A hook 3C that engages and disengages from A3 and 2B3, and the frame 3
It is composed of a receiving part 3D protruding from the front surface of A,
This receiving portion 3D includes a pair of projecting pieces 3D1 projected from the front surface of the frame 3A, and a receiving rod 3D stretched between these projecting pieces.
2, and the sliding scaffolding board 4 further comprises left and right scaffolding boards 4 that are telescopically connected.
Consisting of A and 4B, the single scaffolding board 4A on the left above
, an appropriate number of rectangular cylinders 4A2 are arranged in a row at a predetermined interval on the right side of the left frame 4A1 in a direction perpendicular to the left frame, and the right scaffolding board 4B is connected to the right side frame 4A1. On the left side surface of 4B1, an appropriate number of rectangular cylinders 4B2 are arranged in a row at a predetermined interval in a direction orthogonal to the right frame, and within the interval between the rectangular cylinders 4A2, each corner is The cylindrical body 4B2 is fitted so as to be freely advanced and retractable, and hooks 4A6 and 4B6 that engage and disengage from the receiving rod 3D2 of the receiving portion of the cloth board 3 are protruded from the left frame 4A1 and the right frame 4B1. There is.

b. Embodiment 1 of the invention is a special scaffold for working in stairwells according to the invention, which is composed of a pair of folding scaffolds 2, 2 on the left and right, a cloth board 3, and a sliding scaffold board 4.

Therefore, the folding scaffold 2 is composed of left and right supporting legs 2A, 2B and front and rear brace members 2C, 2D that connect these legs.

The left supporting leg 2A is the left front supporting leg 2A1,
It is composed of a left rear supporting leg 2A2 and upper, middle and lower connecting rods 2A3 that connect these legs.

The right supporting leg 2B is the right front supporting leg 2B1,
It is composed of a right rear supporting leg 2B2 and upper, middle and lower connecting rods 2B3 that connect these legs.

Reference numeral 2E denotes a square screw type jack base which is attached to the lower end surface of each of the above-mentioned supporting legs so as to be able to rise and fall freely.

The above-mentioned front brace member 2C is the front and rear connecting rod 2C.
1 is pivoted in an X shape at the center position with a pin P, and the lower end is pivoted with a pin P below the left front support leg 2A1 and below the right front support leg 2B1,
The upper end is connected to the left front support leg 2 via the bending rod 2C3.
The upper part of A1 and the upper part of the right front supporting leg 2B1 are pivotally connected by a pin P.

The above-mentioned rear brace member 2D is a front and rear connecting rod 2D.
1 is pivoted in an X shape at the center position with a pin P, and the lower end is pivoted with a pin P below the left rear support leg 2A2 and below the right rear support leg 2B2,
The upper end is connected to the left rear supporting leg 2 via the bending rod 2D3.
The upper part of A2 and the upper part of the right rear supporting leg 2B2 are pivotally connected by a pin P.

2F is a locking metal fitting provided on the supporting leg 2A1, 2G
is a pin protruding from the support leg 2B1, and both will engage with each other when the folding scaffold 2 is folded.

The cloth board 3 has a rectangular frame 3A in plan view, and this frame 3A.
and a plate 3B stretched over the frame 3A.
The upper connecting rods 2A3, 2 protruding from the left and right end surfaces of
It is composed of a hook 3C that engages and disengages from B3, and a receiving portion 3D that projects from the front surface of the frame 3A.

This receiving portion 3D includes a pair of protrusions 3D1 projected from the front surface of the frame 3A, and a receiving rod 3 stretched between these protrusions.
D2.

The sliding scaffolding board 4 is comprised of left and right scaffolding boards 4A and 4B that are telescopically connected.

In the left scaffolding board unit 4A, an appropriate number of rectangular cylinders 4A2 are arranged in succession at predetermined intervals on the right side surface of the left frame 4A1 in a direction orthogonal to the left frame.

In the right scaffolding board unit 4B, an appropriate number of rectangular cylinders 4B2 are successively arranged at predetermined intervals on the left side surface of the right frame 4B1 in a direction orthogonal to the right frame.

Then, within the interval between the square cylinder bodies 4A2,
Each rectangular cylinder body 4B2 is fitted so as to be freely retractable.

4A3 is a connecting frame provided at the tip of the rectangular cylinder body 4B2.

4B3 is a connecting frame provided at the tip of the rectangular cylinder 4A2.

4A4 is a connecting plate provided near the left frame 4A1 in the rectangular cylinder 4A2.

4A5 and 4B5 are hooks projected from the left frame 4A1 and the right frame 4B1, respectively, and are engaged with and detached from the receiving rod 3D2 of the receiving portion of the cloth board 3.

5 is a locking tool.

Referring to FIG. 7, the locking devices 5 are provided at the right end of the left single scaffolding board 4A and at the left end of the right single scaffolding board 4B. The details will be explained with reference to FIGS. 8 to 12, but each of these figures shows the state in which the left scaffold board 4A is installed at the right end, so the right scaffold The same applies to the case where it is provided at the left end portion of the single plate 4B.

Therefore, with reference to FIG. 8 and FIG.
The square cylinder body 4A is attached to the upper surface of the frame body 5A having a U-shaped cross section attached to the inner wall of the square cylinder body 4A2 located at the front end of the square cylinder body 4A2.
Elongated hole 5A with a direction perpendicular to the longitudinal direction of A2
1 is opened, and a sliding plate 5B is inserted in the left-right direction into the frame 5A, and this sliding plate 5B has a length that is slightly inclined with respect to the longitudinal direction of the square cylinder 4A2. A hole 5B1 is formed, and a circular hole 5A2 is formed in the vertical wall of the frame 5A, and a shaft 5C that advances and retreats in a direction perpendicular to the longitudinal direction of the rectangular cylinder 4A2 is inserted into this circular hole. The above elongated holes 5B1 and 5A are provided on the inner upper surface of the shaft 5C.
A press plate 5D is fixed to the outer end surface of the shaft 5C, and this press plate is coated with anti-slip rubber. It is configured to move forward and backward out of the rectangular cylinder 4A2 through a circular hole 5E formed in the side wall of the square cylinder 4A2.

As for the sliding plate 5B, as described above,
Although it is configured to be able to slide inside the frame 5A, specifically this sliding plate 5B and this sliding plate 5B are
It is composed of a lower sliding plate 5B3 corresponding to the rectangular cylinder body 4, and a substantially semicircular finger rest part 5B2 that connects the right ends of these two plates.
It is configured to protrude outward from the right end of A2.

Therefore, when this finger hook portion 5B2 is pressed into the rectangular cylinder body with a fingertip, the upright rod 5C1 is inserted into the elongated hole 5B1, 5A1.
is moved inward of the rectangular cylinder.
Since a shaft and a pressing plate are fixed to this upright rod, the pressing plate presses the side surface of the right scaffolding board unit 4B. As a result, the left and right scaffolding boards are in a locked state.

c How to use The assembly procedure is as follows: A. Spread out the folding scaffolding on the upper and lower landings and install it.

B. Place a cloth board with a pipe on each.

C. Set the sliding scaffolding board diagonally or horizontally to match the span.

(d) Separately apply anti-slip material (made of wood, steel, or rubber) to the diagonal scaffolding boards.

C Effect of the idea a. Assembly work is easy.

b. Easy to dismantle when not needed.

c The assembly will be the same no matter who is working on it.

d Can be set by simply extending and contracting the special sliding scaffolding board.

e Can be folded occasionally for storage. Parts do not fall apart.

f Dimensions are set to ensure an elevating passage. (The standard lifting width is 1200mm or more by law.) g. A 42.7mm pipe has been processed to allow diagonal scaffolding boards to be set on the work cloth board.

[Brief explanation of drawings]

Figure 1 is a perspective view of the folding scaffold in use, Figure 2 is a front view of the folding scaffold, Figure 3 is a rear view of the folding scaffold, Figure 4 is a left side view of the folding scaffold, and Figure 5 is a plan view of the folding scaffold, Fig. 6 is a front view of the sliding scaffold board, Fig. 7 is a plan view of the sliding scaffold board, Fig. 8 is an enlarged front view of the main parts of the lock part, and Fig. 9 is a front view of the sliding scaffold board. A sectional view taken along the line A-A, FIG. 10 is a partially cutaway perspective view of the main part, FIG. 11 is a front view showing the relationship between the sliding plate and the pressing plate, and FIG. 12 is a plan view of the same. . 1...Special scaffold for stairwell work, 2...Folding scaffold, 3...Cloth board, 4...Sliding scaffold board.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A device for use in stairway work, characterized by comprising a pair of left and right folding scaffolds 2, 2, a cloth board 3, and a sliding scaffold board 4 having the following requirements: Special scaffolding. B The above folding scaffold 2 has left and right supporting legs 2.
A and 2B, and the above left support leg 2A
are the left front supporting leg 2A1 and the left rear supporting leg 2A.
The right supporting leg 2B is composed of a right front supporting leg 2B1, a right rear supporting leg 2B2, and an upper, middle and lower connecting rod 2B3 connecting these. The left and right support legs 2A, 2B are foldably connected by front and rear brace members 2C, 2D. (b) The cloth board 3 consists of a frame 3A having a rectangular shape in plan and a board 3B stretched over the frame 3A, and further engages and disengages from the upper connecting rods 2A3 and 2B3 that protrude from the left and right end surfaces of the frame 3A. Futsuku 3C and
It consists of a receiving part 3D that projects from the front surface of the frame 3A, and this receiving part 3D includes a pair of projecting pieces 3D1 that project from the front surface of the frame 3A, and a receiving rod 3D2 stretched between these projecting pieces. be made up of. C. The sliding scaffolding board 4 is composed of left and right scaffolding boards 4A and 4B that are telescopically connected, and the left scaffolding board 4A is connected to the left frame 4.
On the right side of A1, in a direction perpendicular to the left frame,
An appropriate number of rectangular cylinders 4A2 are arranged in series at a predetermined interval, and the right scaffolding board 4B has an appropriate number of square cylinders arranged on the left side of the right frame 4B1 in a direction orthogonal to the right frame. The cylindrical bodies 4B2 are arranged in succession at a predetermined interval, and the square cylindrical bodies 4A2
Each rectangular cylinder 4B2 is fitted into the space between the comrades so as to move forward and backward, and the left frame 4A1 and the right frame 4B1 are engaged with and disengaged from the receiving rod 3D2 of the receiving portion of the cloth plate 3. Hook 4A6, 4B
6 is made to stand out. 2. A special scaffold for working in stairwells according to claim 1, which is a registered utility model, in which a square screw type jack base 2E is attached to the lower end surface of each of the supporting legs so as to be able to rise and fall freely. 3 The sliding scaffolding board 4 has a desired length,
A special scaffold for working in stairwells as set forth in claim 1 or 2 of the utility model registration claim, which can be fixed with a locking device.