JPS588510Y2 - Formwork equipment for concrete block molding - Google Patents

Description

[Detailed description of the invention] This proposal was proposed in Utility Model Registration Application No. A dated on the same date as this proposal, in which a connecting reinforcing bar is loosely inserted into a connecting reinforcing bar insertion hole provided in the block body, and one end of the connecting reinforcing bar is inserted into the through hole. A mold for forming a concrete block used in wave-dissipating coating work for breakwaters, sea walls, etc., which anchors and has the other end of the connecting reinforcing bar protruding outside the block body from the insertion hole as a connecting part. This is related to a frame device, in which a forming pipe is interposed between the inner surfaces of opposing formwork pieces in a formwork for forming a concrete block, and a tightening rod is installed across the pipe and each of the formwork pieces. It is characterized by being inserted through the clamping rod and tightening the protruding end portions of the clamping rod from each of the mold pieces via a clamping metal fitting.

In this case, as described above, a forming pipe is interposed between the inner surfaces of opposing formwork pieces in a concrete block forming formwork, and bolts, etc. are inserted between the pipe and the opposing formwork pieces. The molding pipe was inserted into the mold and the protruding portions of the mold pieces on the clamp were tightened using the tightening fittings such as nuts.
However, it can also be installed reliably.

Then, concrete is poured into the formwork, and after the poured concrete has hardened, the tightening rod is removed from the formwork and then demolded, and the thus formed concrete block has a mold that penetrates the block. The forming pipe is buried, and the connecting reinforcing bar insertion hole is formed in the concrete block by the pipe.

Therefore, the concrete block is constructed by inserting a connecting reinforcing bar into the insertion hole formed by the pipe, anchoring one end of the reinforcing bar in the insertion hole, and protruding the other end outward from the block to provide a connecting part. It is something that will be done.

In addition, in this case, as described above, a clamping rod is inserted across the forming pipe interposed between the opposing formwork pieces and the inner surfaces of each of the molding pieces, and the clamping rod is Both ends protruding from each formwork piece were tightened using the clamping fittings, so the formwork was reinforced and interpolated by the clamping fittings and the forming pipe, and concrete was poured into the large formwork and tightened. When compacting, the internal pressure of the concrete prevents bulges on the formwork surface, eliminating the need for a special reinforcing device to prevent the formwork from bulging, and reducing the cost of the formwork.

In addition, since pipes are used as members for forming connecting reinforcing bar insertion holes in concrete blocks, by selecting the shape of the pipe in advance, connecting reinforcing bar insertion holes with a constant inner diameter over the entire length, and inner diameter at one end can be created by selecting the shape of the pipe in advance. Connecting reinforcing bar insertion holes of various shapes can be easily formed, such as a connecting reinforcing bar insertion hole with a large diameter, and a connecting reinforcing bar insertion hole with a large inner diameter at both ends.

The present invention will be described below with reference to the illustrated embodiments.

Figures 4 and 5 are based on the assumption of a regular tetrahedron proposed in Publication of Utility Model Publication No. 45-29084, with the straight line connecting its center of gravity and each vertex as the axis, and the regular tetrahedron hollowed out. Four mutually congruent and medium-thick polyhedrons p having the configured shape are ejected from the center of gravity toward each vertex, and each of the adjacent polyhedrons p is placed on one side of the regular tetrahedron. a corresponding surface q, and a surface r obtained by shaving off the ridgeline of the regular tetrahedron at the same angle as the angle formed by one surface of the regular tetrahedron with respect to the axis so as to have the same shape as the same surface q, and the A concrete block 1 in which the top surface of each polyhedron p is provided with a regular hexagonal cut surface S perpendicular to the axis, and connecting reinforcing bar insertion holes 2 are formed in the block 1 by the formwork device of the present invention. It is.

FIG. 1 shows a side formwork piece 3 having a shape obtained by dividing the outside of the block 1 into four parts, and FIG. 2 shows a regular hexagonal end formwork piece 4, in which four side formwork pieces 3 are shown. The end surfaces of the three radially protruding leg portions excluding the top end of the assembled formwork are respectively closed with the end formwork pieces 4 to form a formwork for forming the concrete block 1 as shown in FIG. Assemble.

Therefore, the central hexagonal plate 3a of the side formwork piece 3 corresponding to the central hollowed out part of the concrete block 1 and the same plate 3a
Through-holes 3b and 4a are formed in the end formwork pieces 4 facing each other, and a molding pipe 5 made of hard vinyl chloride, styrene foam, etc. is interposed between the inner surfaces of both 3 and 4, A bolt 6 is inserted through each of the through holes 3b and 4a of the pipe 5, the hexagonal plate 3a, and the end formwork piece 4, and the bolt 6 is inserted into the hexagonal plate 3a and the end formwork piece 4 of the bolt 6. Fit the washer 7 into the protrusion of the pipe 5 and tighten the nut 8.
Set.

In the illustrated embodiment, both ends of the pipe 5 are formed to have a large diameter, and a connecting reinforcing bar insertion hole 2 having large diameter holes at both ends is formed in the concrete block 1.

By making the pipe 5 have the same diameter over its entire length, or by providing a large-diameter portion only at one end, or by providing large-diameter portions at both ends, it is possible to Connecting reinforcing bar insertion holes 2 having large diameter holes at both ends are molded.

When the setting of the pipe 2 is completed in this way, concrete is poured into the formwork, and after the poured concrete hardens,
The nuts 8 are loosened, the bolts 6 are removed, and the concrete block 1 is then demolded to form a concrete block 1 having connecting reinforcement insertion holes 2 as shown in FIGS. 4 and 5.

If the diameter of the concrete block becomes large, the hexagonal plate 3a of the formwork 3 will swell when concrete is poured into the formwork and compacted using a vibrator, etc., so special measures are taken to prevent this. However, in the illustrated embodiment, reinforcement is required, which increases the cost of the formwork.
Reinforced and supplemented by the pipe 5 and bolt 6,
The hexagonal plate 3a can be prevented from bulging without providing any special reinforcing means.

A connecting reinforcing bar 9 having a smaller diameter than the opening 2 is loosely inserted into the connecting reinforcing bar insertion hole 2 of the concrete block 1 formed as described above using the formwork apparatus of the present invention, and one end of the connecting reinforcing bar 9 is connected to the connecting reinforcing bar. The end of the insertion hole 2 is inserted into the bearing plate 10 which is in contact with the end wall of the large diameter hole 2a, and the washer 11 is fitted and the nut 12 is screwed and tightened. It is anchored in the insertion hole 2 (see FIG. 11), and the other end protruding from the block body is provided with a connecting portion, which will be described later.

7 and 8 show the connected state of concrete blocks 1 equipped with two connecting reinforcing bars 9, and FIGS.
This shows the connected state of the concrete blocks 1 with the main connecting reinforcing bars 9 removed.

Moreover, FIGS. 12 and 13 show the connecting portions of the connecting reinforcing bars 9 of adjacent blocks 1, and the ring body 9a of one of the connecting reinforcing bars 9 has a U.
The two leg pieces of the connecting piece 13 and the ring body 9a of the other connecting reinforcing bar 9 are connected with the bolt 14 and tightened with the nut 15.

As described above, the connecting reinforcing bars 9 are loosely inserted into the connecting reinforcing bar insertion holes 2 formed in the block body, one end of which is anchored in the insertion hole 2, and the other end protruding outward from the block body. When using concrete blocks 1 having a connecting part, the concrete blocks can be easily connected by connecting the protruding ends of the connecting reinforcing bars 9 of adjacent blocks, and By inserting the connecting reinforcing bars 9 loosely into the loop 2 without tightly fitting them into the connecting reinforcing bar insertion holes 2, there is play in the reinforcing bars 9 even if there is some deviation in the laying position of the concrete block 1 during on-site construction. Therefore, the error in the laying position of the concrete blocks 1 can be absorbed and the concrete blocks 1 can be connected, which greatly facilitates construction.

Further, as described above, since the connecting reinforcing bars 9 are loosely inserted into the insertion holes 2 of the block body, the connecting reinforcing bars 9 can be easily attached and removed.

In addition, the connecting reinforcing bars 9 are not buried in the block body,
By being loosely inserted into the connecting reinforcing bar insertion hole 2 of the main body, even if the connecting reinforcing bar 9 rusts and expands, it will not compress the concrete and have an adverse effect.

Furthermore, by utilizing the connecting reinforcing bar insertion holes 2 provided in the block body, transportation, installation, etc. of the block can be carried out efficiently.

[Brief Description of the Drawings] Fig. 1 is a front view of the side formwork piece, Fig. 2 is a front view of the end formwork piece, Fig. 3 is a front view showing the assembled state of the formwork for forming concrete blocks, Figures 4 and 5 are plane and side views of concrete blocks formed by the formwork device of the present invention, Figure 6 is a vertical sectional view of essential parts of an embodiment of the formwork device of the present invention, and Figures 7 and 5 are Figure 9 is a plan view showing the state of use of concrete blocks formed by the formwork device of the present invention, Figures 8 and 10 are side views of Figures 7 and 9, respectively, and Figure 11 is a connecting reinforcing bar. FIG. 12 is a front view showing the connecting portion of the connecting reinforcing bars, and FIG. 13 is a plan view thereof. 1... Concrete block, 2...
Connecting reinforcing bar insertion hole, 3... Side formwork piece, 4...
...End formwork piece, 5...Pipe for molding, 6...
...Bolt, 7...Washer, 8...
Natsuto.

Claims (1)

[Scope of utility model registration request] A forming pipe is interposed between the inner surfaces of opposing formwork pieces in a concrete block forming molding body, a tightening rod is inserted across the pipe and each of the formwork pieces, and the tightening rod is A formwork device for molding a concrete block, characterized in that the protruding ends of each of the formwork pieces are tightened through clamping fittings.