JPH0469696B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to formwork concrete blocks.

(Prior art) As a concrete block for construction, the front and rear face shells are integrally connected by two left and right web shells, and a vertical hole is formed between the left and right web shells, and the vertical hole is vertically divided on the outside of the web shell. A formwork concrete block is known in which grooves are formed respectively, and large U-shaped or V-shaped recesses are provided on the upper and lower surfaces of the left and right web shells to communicate the left and right vertical holes and grooves of the web shells. This formwork concrete block is made by filling the vertical holes and grooves of all concrete blocks with fresh concrete after masonry, and connecting the fresh concrete in the vertical holes and grooves together through the upper and lower grooves of the web shell, making it strong. Traditionally, during masonry, mortar was applied to the top, bottom, left and right sides of the face shell to a thickness of approximately 10 mm, and the mortar hardened to adhere adjacent blocks. As a result, the masonry work required a high level of skill and a large number of hands, which resulted in a long construction period.

Recently, in order to eliminate the need for mortar application, vertical protrusions have been provided on one of the left and right end faces of the face shell, and grooves into which the protrusions fit are provided on the other end face. Attempts began to be made to fit these together and lock them together. It has also been attempted to provide longitudinal protrusions on the upper surface of the face shell and grooves on the lower surface, and to fit these into place during masonry.
Further, the upper end of the web shell is made to protrude from the upper surface of the face shell, and the thickness of this protruding part is made thinner than the lower part to form a stepped part in the protruding part. Japanese Patent Publication No. 59-49385 discloses a device which is engaged with the lower end of the web shell of the other block. In addition, Japanese Patent Laid-Open No. 2003-19937 disclosed a construction block in which both the left and right ends of the front and rear face shells are connected by a web shell, and convex tongues and concave grooves of the same shape are formed on the upper and lower surfaces of the web shell, respectively, so that they can be fitted in a complementary manner. It is disclosed in Publication No. 59-31346.

(Problem to be Solved by the Invention) When vertical protrusions and grooves are provided on the left and right end faces of the face shell, one concrete block adjacent to the other on the left and right may However, it was not possible to prevent displacement in the length direction. Additionally, if longitudinal protrusions and grooves are provided on both the top and bottom 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 displacement 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.

On the other hand, a block in which the upper end of the web shell protrudes, such as the block described in Japanese Patent Publication No. 59-49385, can prevent the block from shifting in the length direction; Since the height is higher than that of the face shell, the spaces on the left and right sides of the web shell are separated by the web shell, and it is therefore impossible to fill the spaces between the front and rear face shells with fresh concrete.

Furthermore, in the construction block described in Japanese Patent Application Laid-Open No. 59-31346, which has convex tongues and concave grooves of the same shape on both the upper and lower surfaces of the web shell, the height of the web shell is high, so Similarly, it was impossible to fill with fresh concrete, and moreover, mass molding was impossible. In other words, when forming a concrete block, a mold frame is generally placed on a pallet with a smooth upper surface, a press frame is provided 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 the concrete block. The mold frame and press frame are then pulled upwards, and the molded concrete blocks remaining on the pallet are transported together with the pallet to a curing room to be cured and solidified, and then the concrete blocks are horizontally extruded from the pallet. In order to provide a concave part on the top surface of the concrete block and a convex part on the bottom surface, a convex part is provided on the press board and a concave part on the pallet. On the other hand, in order to form a convex part on the top surface and a concave part on the bottom surface of the concrete block, a concave part is provided on the press board and a convex part on the pallet, and the convex part of the pallet is pushed into the concrete block. It was necessary to push the concrete blocks into the lower surface, which made it impossible to remove the concrete blocks on the pallet by extrusion after curing.

This invention uses ordinary molding equipment during molding, allows the product on the pallet to be taken out by extrusion after curing, and prevents the upper and lower blocks from shifting in the length direction when building concrete blocks. To provide a formwork concrete block which can prevent the above-mentioned masonry from occurring and can be filled with ready-mixed concrete after the completion of the above-mentioned masonry.

(Means for solving the problem) The front and rear face shells are integrally connected by two left and right web shells, and a vertical hole is formed between the left and right web shells, and a recess in the shape of vertically dividing the vertical hole is formed on the outside of the web shell. In a formwork concrete block in which a groove is formed respectively and a large U-shaped or V-shaped recess is provided on both upper and lower surfaces of the left and right web shells to communicate the left and right vertical holes and grooves of the web shell, each of the front and rear face shells is An upwardly directed protrusion is provided along the inner surface so that its upper end protrudes from the upper surface of the face shell, and a longitudinal groove into which the protrusion can fit is provided at a position away from the protrusion along the inner surface of the face shell. is provided along the entire length of the inner surface in the height direction.

(Function) During masonry, the upper and lower formwork concrete blocks are connected by fitting the protrusion projecting 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. If the protrusions are provided at both ends of the face shell and a vertical groove having a width twice the width of the protrusion is provided in the center of the face shell (see Example 1),
If a large number of formwork concrete blocks can be stacked in a staggered manner, and the protrusions and vertical grooves are provided in symmetrical positions with respect to the center of the face shell (see Example 2), the orientation of the upper and lower blocks can be reversed. It becomes possible to stack potatoes by stacking them.

Moreover, since the above-mentioned protrusion is provided along the inner surface of the face shell, and large U-shaped or V-shaped recesses are formed on both the upper and lower surfaces of the web shell, which communicate the left and right vertical holes and grooves of the web shell, By pouring fresh concrete from a part of the upper end of the masonry structure, this fresh concrete passes through the upper and lower recesses of the web shell and sequentially flows into the adjacent vertical holes and grooves, thereby forming the entire structure. is filled with fresh concrete. In addition, during molding, the protrusions on the top surface of the face shell are formed by forming a part of the press plate thinly, and the vertical grooves on the inner surface of the face shell are formed by providing notches in the press plate.
Each core is molded by providing a convex portion on a portion of the core.

(Example) The formwork concrete block 1 of the first embodiment shown in FIGS. 1 and 2 has front and rear face shells 2, 2 connected by two left and right web shells 3, 3, and left and right web shells 3, A vertical hole 4 is provided between the web shells 3 and 3, and a vertical hole 4 is provided on the outside of each of the web shells 3, 3.
Concave grooves 5, 5 are formed by dividing the groove into two. A vertical protrusion 2a is provided on one end surface of the face shell 2, a vertical groove 2b into which the protrusion 2a can fit is provided on the other end surface, and a longitudinal groove 2b is provided on the upper surface along the outer surface thereof. A notch step 2e is formed, and a notch step 2f having a larger step difference than the notch step 2e on the upper surface is formed along the inner surface of the lower surface.

Vertical columnar protrusions 6, 6 are provided along the inner surfaces of both ends of the front and rear face shells 2, 2, and the upper ends thereof are 3 to 5 mm from the upper surface of the face shells 2, 2.
The protruding portion of the protrusion 6 forms a protrusion 6a on the upper surface of the face shell 2, while the two protrusions 6 are arranged in parallel at the center of the inner surface of the face shell 2, 2. Vertical grooves 7, 7 are provided with a width that allows for fitting.

FIG. 3 is a longitudinal cross-sectional view of the formwork concrete blocks 1 of the first embodiment stacked in a staggered manner. Then arrange the formwork concrete blocks 1 on the upper side and the adjacent 2 on the lower side.
The projections 6a, 6a are fitted into the lower ends of the vertical grooves 7 in the center of the upper formwork concrete block 6. In addition, in the left and right adjacent parts of the face shell 2, the protrusion 2a at one end of the face shell 2 is connected to the longitudinal groove 2b at the other end.
In the upper and lower adjacent parts, the upper and lower notch steps 2e and 2f fit together to prevent misalignment in the thickness direction, and the upper and lower notch steps 2 are formed on the inner surface of the adjacent part.
A lateral groove is formed based on the difference in steps of e and 2f, and when pouring fresh concrete, the fresh concrete flows into this lateral groove to form a so-called pouring joint.

The formwork concrete block 11 of the second embodiment shown in FIG. 4 and FIG.
3, a vertical hole 14 is formed between the two web shells 13, 13, and grooves 15, 15 are formed on the outside of each of the web shells 13, 13. and the left side web shell 13, and the above-mentioned protrusion 16 between the right side web shell 13 and the opposite right side web shell 13.
respectively form vertical grooves 17, 17 into which they can be fitted;
The upper ends of the protrusions 16, 16 are connected to the face shells 12, 1
Protrusions 16a, 16 protrude upward from the top surface of 2.
A is formed.

Incidentally, on the left end surface of the front face shell 12 (lower side in FIG. 4) and the right end face of the rear face shell 12, vertical protrusions 12a, 12a are provided protruding toward 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, a cutout stepped portion 12 is provided closer to the outer surface.
b, 12b are provided in the vertical direction. Further, on the upper surfaces of the front and rear face shells 12, 12, cutout step portions 12c, 12c are formed in the width direction closer to the inner surface, respectively, and on the lower surface, a step is formed closer to the outer surface than the cutout step portion 12c on the upper surface. Small notch step portions 12d, 12d are formed in the width direction. Also,
The upper surface of the web shell 13 has a deep recess 13a.
In addition, shallow recesses 13b are formed on the lower surface, and the bottom surface of the recess 13b on the lower surface has two front and rear portions.
Main reinforcement grooves 13c, 13c are formed.

Formwork concrete block 1 of this second embodiment
When a plurality of blocks 1 are arranged side by side, the protrusions 12a and the notch steps 12b on the end faces of the adjacent formwork concrete blocks 11, 11 engage with each other. Furthermore, when the upper formwork concrete blocks 11 are stacked on top of these formwork concrete blocks 11 in the same phase with their right and left directions reversed, the protrusions 16a of the lower formwork concrete blocks 11 will overlap the upper formwork concrete blocks 11. They fit into the lower ends of the vertical grooves 17 of the frame concrete block 11 and are locked together, preventing the upper formwork concrete block 11 from shifting in the width direction with respect to the lower formwork concrete block 11.

In addition, in this second embodiment, the protrusion 12 on one end surface of the left and right adjacent face shells 12, 12
The face shells 12, 12 of the formwork concrete blocks 11, 11 are in contact with the bottom surface of the notch stepped portion 12b on the other end surface, and are overlapped vertically.
Since the bottom surfaces of the notch stepped portion 12d at the upper end and the lower end come into contact, a groove-shaped void is created along the inside of the mating portion of the face shell, and when pouring the ready-mixed concrete, the ready-mixed concrete flows into this void. A so-called driving joint is formed.

In each of the above embodiments, columnar projections 6, 16 are provided on the inner surfaces of the face shells 2, 12 so as to form a step with respect to the inner surfaces, and the upper ends thereof are connected to the projections 6a, 16.
6a, the thickness of the protrusions 6a, 16a can be increased to increase the strength.

(Effects of the Invention) The present invention provides a protrusion whose upper end projects from the upper surface of the face shell along each inner surface of the front and rear face shells, and at a position away from the protrusion along the inner surface of the face shell. Since the structure has vertical grooves into which these projections can fit, by appropriately setting the positions and numbers of the projections and vertical grooves, it is possible to form a large number of formwork concrete blocks in a staggered manner or in piles. The blocks are stacked in a shape, and the protrusions of the lower formwork concrete block are fitted into the lower ends of the vertical grooves of the upper formwork concrete block to lock them together, and one of the upper and lower blocks is displaced in the length direction of the other. It is possible to prevent this from happening.
Moreover, since the above-mentioned protrusions protrude on the upper surface of the face shell and do not protrude on the lower surface, and the mating partner of the above-mentioned protrusions is a vertical groove along the inner surface of the face shell, it is difficult to fit into the pallet when molding the formwork concrete block. There is no need to provide protrusions, holes, recesses, etc., and after curing, the products on the pallet can be pushed out and removed while sliding. Therefore, a molding device that has been widely used in the past can be used by simply changing the shape of its press plate.
In addition, since the above-mentioned protrusion is provided along the inner surface of the face shell, and a large recess is formed in the web shell, and there is nothing to prevent communication between the left and right vertical holes and grooves of the web shell, reinforcing bars are placed vertically and horizontally. However, the inside of each block can be filled with ready-mixed concrete to create a strong structure.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the first embodiment of this invention, and FIG.
The figure is a cross-sectional view taken along the line -- of FIG. 1, FIG. 3 is a vertical cross-sectional view of the assembled state, FIG. 4 is a plan view of the second embodiment, and FIG. 5 is a cross-sectional view taken along the line V-V of FIG. FIG. 6 is a sectional view taken along the line -- in FIG. 4. 1, 11: Formwork concrete block, 2, 1
2: Face Ciel, 3,13: Web Ciel,
3a, 13a: recess, 4, 14: vertical hole, 5, 1
5: Concave groove, 6, 16: Projection, 6a, 16a: Projection, 7, 17: Vertical groove.

Claims (1)

[Claims] 1. The front and rear face shells are integrally connected by two left and right web shells, and a vertical hole is formed between the left and right web shells, and a groove in the shape of vertically dividing the vertical hole is formed on the outside of the web shell. In a formwork concrete block having a large U-shaped or V-shaped recess that communicates the left and right vertical holes and grooves of the left and right web shells on the upper and lower surfaces of the left and right web shells, An upwardly directed protrusion is provided so that its upper end protrudes from the upper surface of the face shell, and a vertical groove into which the protrusion can fit is provided along the inner surface of the face shell at a position away from the above inner surface. A formwork concrete block characterized by being provided along the entire length in the height direction. 2.Protrusions are provided at both longitudinal ends of the face shell, and a vertical groove is provided in the middle of the face shell in the length direction with a size that allows two of the above-mentioned protrusions to be fitted in parallel.Claim 1 Formwork concrete block as described. 3. The formwork concrete block according to claim 1, wherein the projections and the vertical groove into which one projection can fit are provided at symmetrical positions with respect to the longitudinal center of the face shell.