JPH022723Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Industrial application field) When concrete is poured into the formwork using a concrete pump truck after assembling the concrete formwork at a construction site, this is especially useful for buildings in narrow spaces in the city. If the site is too narrow for a concrete pump truck to enter the site, such as when a concrete pump truck is erecting a concrete fence, the concrete pump truck's concrete pumping pipe must be routed across the sidewalk.

Therefore, the present invention has been developed to provide a simple structure above the concrete pressure-feeding pipe so that people, bicycles, trailers, etc. can easily pass over the concrete pressure-feeding pipe without interfering with pedestrian traffic. This relates to a simple erection walkway for construction work that is assembled and installed.

(Prior art) As shown in Figure 8, this type of conventional simple erection walkway for construction work is constructed by cutting square timbers, single pipes, etc. at the construction site using materials available at the site. A frame-shaped leg A is made by assembling them, and one end of the swash plate B is nailed to the leg A to form a slope C. Therefore, a pair of slopes C and C were placed opposite each other in front and behind the concrete pressure-feeding pipe H placed on the batten material D, and the slopes C,
A top board is placed over legs A and A of C, and the front and rear ends of the top board (F) are nailed to legs A and B, respectively.

Therefore, concrete pouring for a building is carried out on one day, then at intervals of about 7 to 10 days, and this process is repeated many times intermittently and over a long period of time. After concrete is poured, sidewalks must be removed until the next concrete is poured.
Assembling and disassembly are performed each time concrete is poured.

(Problems to be solved by the invention) In the above-mentioned conventional simple erection walkways, materials are wasted by cutting them each time concrete is poured, and workers are required to assemble them by nailing them. It requires a lot of effort and has disadvantages such as not being able to be installed and removed quickly.

(Means for Solving the Problems) In order to eliminate the above-mentioned defects, this invention provides a leg a that can be raised and lowered at one end of the swash plate 1, and connects them with a bendable and extensible support member b. A slope A is constructed, and an engagement recess 2 is provided at the upper end of the slope A, and a pair of slopes A and A are made to face each other front and back, and a ceiling is placed in the engagement recesses 2 and 2. The locking pieces 4, 4 on the front and rear of the lower surface of the plate 3 are removably fitted, respectively, and the top plate 3 is placed and assembled to form a pair of folding inclined tables A, A and the top plate 3. Configured.

(Function) Legs a of a pair of ramps A are erected and supported by supports b, and the ramps A and A are placed in front of and behind the concrete pumping pipe 6 of the concrete pump truck placed on the flap material 5. are placed facing each other in parallel, and the locking pieces 4, 4 on the front and back of the lower surface of the top plate 3 are fitted into the engagement recesses 2, 2 of the inclined tables A, A, respectively, and the top plate 3 is placed and constructed. Install sidewalks.

On the other hand, when removing the constructed walkway, after lifting and removing the top plate 3, push up the middle part of the support b as shown by the arrow in FIG. 8 to move the support tool b in the direction of the arrow ∧
The slant table A is folded along the lower surface of the swash plate 1 by bending the leg a into the shape and rotating the leg a in the direction of the arrow about the mounting pin 9 as a fulcrum. Therefore, as shown in FIG. 7, the folded ramps A, A are turned front and back in opposite directions, and the legs a, a are stacked on top of each other with their legs a, a facing toward the opposite sides, and between the ramps A, A, the legs a, By inserting the top plate 3 between spaces a, the constructed walkway can be folded into a flat shape and put together. Therefore, when not in use, the above-mentioned flat-folded construction walkways are stacked one on top of the other and stored.

(Embodiment) Figs. 1 to 7 show an embodiment of this invention, in which the swash plate 1 is made of plywood, and the swash plate 1 is placed on a frame 10 made of a combination of angle materials. Then, an inverted U-shaped mounting bracket 11 is fixed to one end of both side bars of the frame body 10, and a horizontal bar 12 made of angle material is erected between the both side mounting brackets 11. Angle stop pieces 13 are fixed to both side ends on the tip of the piece, and engagement recesses 2 are formed between the vertical pieces of the horizontal rod 12 and the both side stop pieces 13. Then, both end portions of the locking pieces 4 of the top plate 3 are fitted into the engaging recesses 2 on both sides to connect the inclined table A and the top plate 3.

Reference numeral 14 designates the leg rods on both sides of leg a made of angle material, and an addition piece 15 is attached to the inner surface of the upper end of one of the leg rods, and the intermediate lower portions of the leg rods 14 and 14 are connected by a horizontal crosspiece 16 to form leg a. Then, connect the upper ends of the leg rods 14 on both sides with the adder pieces 15 to the mounting brackets 1 on both sides.
1 and is pivotally attached by a mounting pin 9.

Reference numeral 17 denotes U-shaped receivers at both ends of the support b, into which the free ends of the support rods 7 are fitted, and the pins 18 are inserted.
The supports 17, 17 are respectively fixed to the opposing surfaces of the middle part of the side rods of the frame 10 and the lower part of the leg rod 14, and on the connecting side end of one of the support rods 7,
A stopper 19 is provided at the upper edge of the other support rod 7 to prevent the support member b from bending downward from the substantially straight state.

Although not shown, the swash plate 1 is provided with a non-slip surface such as a horizontal bar.

(Effect of idea) This invention has the following remarkable effects.

(1) If you prepare this simple erection walkway at the construction site, you can easily and quickly erect the legs of a pair of ramps and erect a top board between them, or install the top board as needed. Also, the ramp can be disassembled, folded and stored, which can be handled immediately and is convenient for work.

(2) It is not only efficient in terms of materials as it does not require the use of unnecessary materials as in the past, but it is also economical as it saves the labor and time of workers.

(3) It can be installed reliably and firmly at all times, which is beneficial for safety.

(4) When not in use, it can be folded and stored compactly, requiring only a small amount of storage space.

(5) Anyone can install and remove it without any technical skills.

(6) It can be disassembled and folded into a small size, so it can be carried by workers.

(7) Because it is sturdy, bicycles and trailer cars can pass through it safely.

(8) Passersby will not be contaminated by concrete adhesion.

(9) The structure is simple and can be manufactured easily and inexpensively.

(10) Depending on the width of the sidewalk, they can be used in parallel as appropriate to construct an elevated sidewalk of the required width.

[Brief explanation of the drawing]

Figure 1 is a side view of a simple erection walkway for construction work according to one embodiment of the present invention, Figure 2 is an exploded slope view, and Figure 3 is an exploded slope view.
The figure is an exploded perspective view of the leg attachment part of the ramp, with the middle part cut away. FIG. 4 is an enlarged side sectional view of the connecting portion between the tilt table and the top plate, and FIG. 5 is a plan view of one side thereof, with the top plate removed. FIG. 6 is a sectional view taken along the line -- in FIG. 4, FIG. 7 is a side view of the above-mentioned easily constructed walkway in a folded state, and FIG. 8 is a side view of a conventional easily constructed walkway for construction work. A... Inclined table, a... Legs, b... Supports, 1...
... Swash plate, 2 ... Engagement recess, 3 ... Top plate, 4 ... Locking piece.

Claims (1)

[Scope of utility model registration request] Legs are provided at one end of the swash plate so that they can be raised and lowered, and the legs are connected by a bendable and extensible support to form a slope, an engagement recess is provided at the upper end of the slope, and a pair of the slopes A simple erection walkway for construction work, in which the front and rear of the platform are opposed, and locking pieces at the front and rear of the lower surface of the top plate are removably fitted into their engagement recesses.