JPS63251556A - Building cavity concrete block - 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 (Field of Industrial Application) This invention relates to a hollow concrete block for construction.

(Prior Art) A hollow concrete block for construction is known in which front and rear face shells are integrally connected by a plurality of web shells, a vertical hole is provided in the center, and grooves are provided at both left and right ends.
Conventionally, during masonry, mortar was applied to the top, bottom, left and right end faces of blocks to a thickness of approximately 10m+a, and adjacent blocks were bonded together as this mortar hardened, but this method required skill for each task. , there was a problem that the construction period would be long.

Therefore, recently, in order to eliminate mortar application, vertical protrusions are provided on one of the left and right end surfaces of the face shell, and grooves into which the protrusions fit are provided on the other end surface.
Attempts have been made to fit and lock these together during masonry. In addition, longitudinal protrusions are provided on the upper surface of the face shell, and grooves are provided on the lower surface.
Attempts have also been made to fit these together during masonry.

In addition, vertical pin holes are drilled at opposing positions on the upper and lower mating surfaces of the concrete blocks during masonry.

Attempts were made to connect vertically adjacent concrete blocks by inserting pins into the pin holes mentioned above. Furthermore, attempts have been made to provide a portion of the upper and lower mating surfaces of the face shell with convex portions and concave portions that engage with each other.

(Problem to be solved by the invention) When vertical protrusions and grooves are provided on the end face of the face shell, one concrete block adjacent to the left and right may shift in the thickness direction from the other concrete block. However, it was not possible to prevent displacement in the length direction. In addition, when longitudinal protrusions and grooves are provided on the upper and lower surfaces of the face shell, it is possible to prevent one concrete block from shifting in the thickness direction relative to the other vertically adjacent concrete block. However, it was not possible to prevent deviation in the length direction. That is, when providing uneven stripes in the vertical direction or in the longitudinal direction, there is a problem in that locking in the longitudinal direction cannot be achieved in either case.

Also, if the upper and lower mating surfaces are connected with pins.

Although it is possible to lock in the thickness direction and length direction, it is necessary to drill pin holes in advance during masonry, and the pin must be prepared, and the position and size of the pin hole must be accurate. The concrete block itself was often damaged when drilling the pin holes.

Further, when a portion of the upper and lower mating surfaces is provided with a convex portion and a concave portion that engage with each other, mass molding is impossible. In other words, when forming concrete blocks, a mold frame is generally placed on a pallet with a smooth top surface, a press frame is installed above the pallet so that it can be raised and lowered, and the press plate of the press frame is inserted into the mold frame to form concrete blocks. The shoes are molded, and then the mold frame and press frame are pulled upwards.

The molded concrete blocks left on the pallets are transported together with the pallets to a curing room for curing and solidification, and then the concrete blocks are transferred from the pallets to a conveyor by horizontal extrusion. In order to provide protrusions on the upper and lower surfaces of the concrete block, it is necessary to provide protrusions on the press plate and recesses on the pallet, and to push fresh concrete into the recesses on the pallet. In order to form recesses in each, it is necessary to provide recesses on the press plate and protrusions on the pallet, and push the protrusions of the pallet into the underside of the concrete block. Therefore, after curing, the concrete blocks on the pallet must be pushed out. could not be removed due to

This invention prevents the upper and lower blocks from shifting in the length direction when concrete blocks are assembled, and
Use regular molding equipment during molding.

To provide a hollow concrete block from which products on a pallet can be taken out by extrusion after curing.

(Means for solving the problem) Protrusions whose upper ends protrude from the upper surface of the face shell are provided along the inner surfaces of the front and rear face shells, and protrusions are provided along the inner surfaces of the face shell apart from the protrusions. A vertical groove into which this protrusion can fit is provided at the position.

(Function) During masonry, the upper and lower hollow concrete blocks are connected by fitting the protrusion protruding from the top surface of the lower concrete block into the lower end of the vertical groove of the upper concrete block, and one of the upper and lower blocks This prevents the other from shifting horizontally. When protrusions are provided at both ends of the face shell and a vertical groove having a width twice the width of the protrusions is provided in the center of the face shell (see Examples 1 to 6), a large number of hollow concrete blocks are arranged in a staggered manner. If the protrusions and vertical grooves are placed symmetrically with respect to the center (see Example 7), the upper and lower blocks can be stacked in the opposite direction, resulting in foundation-like masonry. becomes possible. During molding, the protrusions on the upper surface of the face shell are formed by forming a thin part of the press plate, and the vertical grooves on the inner surface of the face shell are formed by providing notches in the press plate and protrusions on a part of the core. They are each molded by providing them.

(Example) Cavity concrete block 1 of the first example shown in Fig. 1
1 connects the front and rear face shells 2.2 with two left and right web shells 3.3, forming a vertical hole 4 in the center and grooves 5.5 in the shape of dividing the above-mentioned vertical hole 4 into two on both left and right sides. In the hollow concrete block, vertical columnar protrusions 6.6 are provided along the inner surfaces of both ends of the front and rear face shells 1.2 so that their upper ends protrude from the upper surface of the face shells 1.2 by about 3 to 5 mm. protrusions 6a, 6a are formed on the upper surface of the face shell 1.2, and a longitudinal groove 7.7 is formed in the center of the inner surface of the face shell 1.2 with a width that allows two of the above-mentioned protrusions 6 to be fitted in parallel. It has been established.

Figure 2 shows the hollow concrete block 1 of the above first embodiment.
It is a front view of a state where the blocks are stacked in a staggered manner, and the upper hollow concrete block 1 is arranged on the upper surface of the two hollow concrete blocks 1.1 arranged on the lower side, and the lower adjacent hollow concrete blocks 1. The two adjacent protrusions 6a, 6a of the hollow concrete block 1.1 are fitted into the lower ends of the central vertical groove 7 of the upper hollow concrete block 1.

The embodiments shown in FIGS. 3 to 7 have the same protrusions 6 and longitudinal grooves 7 as the first embodiment, but have different shapes in other parts, and the embodiments shown in FIGS. In the embodiment, a vertical protrusion 2a is provided on one end surface of the face shell 2, and a vertical groove 2b into which the above-mentioned protrusion 2a can be fitted is provided on the other end surface.
In addition, there are groove-shaped recesses 3a in the horizontal direction on the top and bottom of the web shell 3.
It has been established.

In the third embodiment shown in FIG. 4, the protrusion 2c on the left end surface and the notch step 2d on the right end surface of the front face shell 2 (lower side in the figure) are arranged along the outer surface (front surface) of the face shell 2. and a protrusion 2c on the left end surface of the rear face shell 2.
and a notch step portion 2d on the right end surface are provided along the inner surface of the face shell 2, respectively.

In the fourth embodiment shown in FIG. 5, a cutout step 2e is formed on the upper surface of the face shell 2 along its outer surface, and a cutout step 2e on the upper surface is formed on the lower surface of the face shell 2 along its inner surface. A notch step (not shown) having a larger step than 2e is formed, and the fitting between the two prevents misalignment in the thickness direction.

In the fifth embodiment shown in FIG. 6, three vertical holes 4 are formed using four web shells 3, and both upper and lower surfaces of the face shell 2 and web shell 3 are formed on the same surface. be.

The sixth embodiment shown in FIG. 7 has two left and right web shells 3.
．． 3 is narrowly spaced, the cross-sectional area of the left and right grooves 5.5 is approximately twice as wide as that of the central vertical hole 4, and vertical grooves 2f are provided on both left and right end surfaces of the face shell 2, respectively. .

The hollow concrete block 11 of the seventh embodiment shown in FIGS. 8 to 10 has front and rear face shells 12.12.
are connected by two left and right web shells 13.13, a vertical hole 14 is formed in the center, grooves 15.15 are formed on both left and right sides, and a protrusion is formed on the left side of the left and right center line of the front and rear web shells 13.13. 16,16.

On the opposite right side is a vertical groove 17.1 into which the above-mentioned protrusion 16 can fit.
7 respectively, and the upper ends of the protrusions 16.16 are made to protrude upward from the upper surface of the face shell 12.12 to form the protrusions 16.
a, 16a are formed. Incidentally, on the left end surface of the front face shell 12 (lower side in FIG. 8) and on the right end surface of the rear face shell 12, vertical protrusions 12a, 12a are provided protruding from the outer surface, respectively. On the right end surface of the face shell 12 and on the left end surface of the rear face shell 12, cutout steps 12b, 12 are provided closer to the outer surface, respectively.
b are provided in the vertical direction, and the front and rear face shells 12.
12, each has a notched stepped portion 12c closer to the inner surface.
, 12c are formed in the width direction, and cutout step portions 12d, 12d, which are smaller in step than the cutout step portion 12c on the top surface, are formed in the width direction on the lower surface, respectively, closer to the outer surface. Deep recesses 1 and 3a are formed on the lower surface, and a shallow recess 13b is formed on the lower surface, and two reinforcement grooves 13c and 13c, front and rear, are formed on the bottom surface of the recess 13b on the lower surface.

In this seventh embodiment, when a plurality of hollow concrete blocks 11 are arranged side by side, the protrusions 12a and notch steps 12b on the end faces of adjacent hollow concrete blocks 11.11 engage with each other, and these hollow concrete blocks 11. When the above-mentioned hollow concrete block 11 is stacked on top of the hollow concrete block 11 in the same phase with the left and right directions reversed, the protrusion 16a of the lower hollow concrete block 11 is aligned with the vertical groove 17 of the upper hollow concrete block 11. The lower ends of the hollow concrete block 1 are fitted together and locked together.
1 is prevented from shifting in the width direction of the upper hollow concrete block 11.

In each of the above-mentioned embodiments, a columnar protrusion 6.16 is provided on the inner surface of the face shells 2, 12 so as to form a step with respect to the inner surface, and the upper end thereof is provided with a protrusion 6a.

16a, the thickness of the projections 6a, 16a can be increased and the strength can be increased.

(Effects of the Invention) This invention provides a protrusion whose upper end protrudes from the upper surface of the face shell along each inner surface of the front and rear face shells, and a protrusion that is located along the inner surface of the face shell at a position away from the protrusion. Since this protrusion has a vertical groove that can be fitted into it, by appropriately setting the position and number of the protrusion and the vertical groove, it is possible to arrange a large number of hollow concrete blocks in a staggered manner or at the base. It is possible to prevent one of the upper and lower blocks from shifting in the length direction of the other by fitting the protrusion of the lower block into the lower end of the vertical groove of the upper block and locking them together. can. Moreover,
The above protrusions protrude from the top surface of the face shell and do not protrude from the bottom surface, and since the surface metal counterpart of the above protrusions is a vertical groove along the inner surface of the face shell, the protrusions are removed from the pallet when molding a hollow concrete block. There is no need to create holes, depressions, etc., and after curing, the products on the pallet can be extruded and removed while sliding. Therefore, the molding equipment that has been widely used in the past can be replaced by simply changing the shape of the press plate. can be used.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention, and FIG. 2 is a perspective view of a first embodiment of the present invention.
A front view of a state in which the hollow concrete blocks of the embodiment are stacked, FIGS. 3 to 7 are plan views of the second to sixth embodiments, respectively, and FIG. 8 is a plan view of the seventh embodiment.
9 is a cross-sectional view taken along the line ■--■ in FIG. 8, and FIG. 10 is a cross-sectional view taken along the line X--X in FIG. 1.11: Cavity concrete block, 2°12: Face shell, 3.13: Web shell. 6.16: Projection, 6a, 16a: Projection, 7.17: Vertical groove. Patent Applicant Taiyo Cement Industry Co., Ltd. Agent Patent Attorney Yoshi 1) Ryo Tsukasa Figure 6 Procedural Amendment June 17, 1986 Commissioner of the Patent Office Kuro 1) Akio Yu Tono 2 Title of Invention Air-heated Concrete Block for Construction 3 Relationship with the case of the person making the amendment Patent applicant Residence 4-22-9 Yoshino, Fukushima-ku, Osaka City Name
Taiyo Cement Kogyo Co., Ltd. 4 Agent Address: Shin-Toyama Building, 2-10 Azuchi-cho, Higashi-ku, Osaka Telephone: 06 (264) 6555 Name (8166) Patent Attorney Yoshi 1) Tsukasa Ryo, m:: Tsukasa,... -1r, 1'-,' 5 Date of amendment order Voluntary '6 Target of amendment 7 Contents of amendment (1) The following - sentence was added after "Prevented." on page 11, line 17 of the specification cylinder. In addition, in this seventh embodiment, the tips of the protrusions 12a of the hollow concrete blocks 11.11 adjacent to the left and right are in contact with the bottom surfaces of the notch steps 12b, and the hollow concrete blocks 11.11 that overlap vertically Face shell 12.1
2 and the bottom of the notch section 12d, a groove-shaped void is created along the inside of the joint of the face shell, and when pouring fresh concrete, the fresh concrete flows into this void, resulting in what is called pouring. A joint is formed. ”

Claims (1)

[Scope of Claims] [1] A hollow concrete block for construction in which front and rear face shells are integrally connected by a plurality of web shells, a vertical hole is provided in the center, and grooves are provided at both left and right ends,
A protrusion is provided along each inner surface of the front and rear face shells, the upper end of which protrudes from the upper surface of the face shell, and
A construction concrete block characterized in that a vertical groove into which the protrusion can fit is provided at a position away from the protrusion along the inner surface of the face shell. [2] Protrusions are provided at both lengthwise ends of the face shell, and a longitudinal groove is provided in the middle of the face shell in the lengthwise direction with a size that allows two of the above-mentioned protrusions to fit in parallel. The hollow concrete block for construction according to item 1. [3] The hollow concrete block for construction according to claim 1, wherein the projections and the longitudinal groove into which one projection can be fitted are provided at symmetrical positions with respect to the longitudinal center of the face shell.