JPS6051258A - Assembling of scaffold for wall - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for assembling a scaffold for a retaining wall, which is used when constructing a retaining wall such as a block retaining wall or a concrete retaining wall.

Conventionally, scaffolding for retaining walls has been erected from the ground by assembling scaffolding materials in a turret shape, but due to the conditions of the scaffolding foundation, it is impossible to erect the scaffolding in places such as steeply sloping rock walls or water volume. Work was carried out without scaffolding in areas with poor foundation conditions, such as rivers with a lot of water or narrow roads, which was extremely dangerous, and the work was difficult, hard work, and low in efficiency.

The present invention allows scaffolding to be assembled extremely easily and at low cost regardless of the quality of the foundation conditions, and even in locations with poor foundation conditions such as steep rock walls, watery rivers, or narrow roads. The purpose of the present invention is to provide a scaffold assembly method for a retaining wall scaffold that can safely and efficiently construct a retaining wall by attaching a supporting member having an expandable material to a drainage hole of the retaining wall. After that, the expansion/contraction material is pushed out and pressed against the circumferential surface of the drain hole, and a scaffold board is attached to the portion of the support member that protrudes outside the drain hole. .

Hereinafter, the present invention will be explained in more detail with regard to the embodiment shown in the drawings.A retaining wall 1 includes a concrete block 3 made of concrete on foundation concrete 1 and 2, and a concrete 4 and a backfill 5.
It is a normal thing that was piled up while filling it with water, and drainage vibros were buried in various places during the construction process.

The support member 7 consists of a short vibrator 7a on the tip side and a long pipe 7b as a main body, and a pair of expansion/contraction members 8a.

8b is made of an elastic material such as rubber into a ring shape, and these expanding/contracting members 8a, 8b are placed between the two pipes 7a, 7b and at the tip of the short pipe 7a, as shown in FIG. A pair of discs 9a having a bowl-shaped recess in the portion.

9b, 9a', and 9b' are respectively sandwiched and interposed, and on the center side of the short pipe 7a there is one opposing disc 9b,
An inner pipe 10 is interposed to keep 9b' at a constant [JtW. Either the plates are arranged in a ring shape, a cam is attached to the operating rod corresponding to the cotton swab port, and the cam pushes out the arc-shaped plate so that it comes into pressure contact with the draining vibro, or the expandable member 8a, fib, or circle Is the arc plate a pipe? a.? b
It goes without saying that the same effect means may be included, such as pushing out and pressing into contact using a lever using an operating rod inserted therein.

Also, on each day, center holes 11...
A nut 12 is welded to a disc 9a' that overlaps the end of the long pipe 7b, and a long tightening pole 13 with a threaded end is inserted into the pipe 7b, and the screw 13a is inserted into the pipe 7b. are screwed into the nuts 12 and inserted into each center hole II, and a locking nut 14 is fixed to the tip of the tightening port 13.

When constructing a scaffold, first, the support member 7 with the expansion and contraction members 8a and 8b attached as described above is inserted into the draining vibro, and then the prismatic spanner at the base end of the tightening port 13 is attached. When the tightening port 13 is rotated by applying a wrench to the portion 13b, the cotton swab port 13 moves in the direction of ejecting from the nut 12, and the locking nut 14 rotates integrally with the tightening port 13 to rotate the swab port 13 into a disc. Expansion/contraction material 8a on the back side via 9a
is pushed to the right in Fig. f62, so the expansion/contraction material 8a bulges toward the outer periphery.

At this time, the disk 8b'' that receives the expandable material 8b on the near side is pushed by the disk 9b via the pipe 7a and the inner pipe 10, so the expandable material 8b on the near side is compressed in the width direction and expands toward the outer periphery. Eventually, the two expansion and contraction members 8a and 8b are firmly pressed against the inner peripheral surface of the draining vibro and become an anchor.
The support member 7 can be fixed to the water draining vibro.

The strut 15 is then clamped 16 to the outer end of the support member 7.
Since the support member 7 is tilted downward in the same direction as the drain hole 6, the support frame 17, which has a U-shaped cross section and whose base is pivoted to the support member 7 so as to be tiltable up and down, is attached to the adjustment screw 18. A plurality of sets of such support members 7 are erected, a scaffolding board 18 is placed on the support frame 17 attached to each set, and a handrail 20 is attached to the top of the pillar 15 and the tatami mat. The scaffolding is completed.

Further, when removing the support member 7, by rotating the tightening bolt 13 in the opposite direction, the diameters of the expansion and contraction members 8a and 8b are reduced, so that the support member 7 can be easily removed from the drain hole 6.

As described above, the present invention inserts the support member that supports the expansion/contraction material into the drainage hole of the retaining wall, then moves the expansion/contraction material outward to press against the circumferential surface of the drainage hole, and the support member Since the scaffolding board is attached to the part that protrudes outside the drainage hole, it can be used even in places with poor foundation conditions, such as when constructing a retaining wall on a steep rock wall, a river with a large amount of water, or a narrow road. By inserting support members into the drainage pipes buried during the construction process and fixing them with expansion materials, retaining wall scaffolding can be erected extremely easily and quickly, making it possible to perform work safely and improve work efficiency. It can be significantly improved.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view showing the state in which scaffolding is erected on the retaining wall, Figure 2
The figure is a sectional view of the main part of the support member, and FIG. 3 is a side view of the scaffold. ■...Retaining wall 6...Drainage pipe 7...Supporting members 8a, 8b...Expansion materials 9a, l]b
Ja'%] b' 60 disc 12... Bolt with Nand 13m 14# - Stop Nand 15... Branch 18... Scaffold board procedure amendment () Leg 3. Relationship with the case of the person making the amendment Applicant: 4554 Naegi, Nakatsuyo City, Gifu Prefecture, 5, color V side 7 Company representative: Osamu Mitsuma 4, agent 5, date of amendment order July 31, 1982 r'+ (
Shipping date) 6. Symmetry of the amendment Drawing 7. Details of the amendment as attached.

Claims (1)

[Claims] A support member having an expansion/contraction material is inserted into a drain hole of a retaining wall, and then the expansion/contraction material is forced outward and pressed against the circumferential surface of the drain hole, so that a portion of the support member protrudes outside the drain hole. A method for assembling a scaffold for a retaining wall, characterized by attaching a scaffold board to the retaining wall.