JP2002347010A - Cubic frame-like block and form apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve durability and stability by preventing stress from being concentrated at a corner part. SOLUTION: Respective corner parts formed by crossing cylindrical spaces respectively passing through up and down, before and behind and right and left at right angles, are formed into a depressedly curved surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional frame-shaped block and a formwork device for the three-dimensional frame-shaped block.

[0002]

2. Description of the Related Art Conventionally, as one form of a three-dimensional frame-shaped block, as shown in FIG.
In some cases, cylindrical spaces b, c, and d penetrating in the vertical direction, the front-rear direction, and the left-right direction are formed at right angles in the center of the block body a.

[0003]

However, in the above-described three-dimensional frame-shaped block, as shown in FIG. 18, the cylindrical spaces penetrating in the vertical direction, the front-rear direction, and the left-right direction intersect at right angles. Since the acute angle projections e are formed at each corner formed by the above, stress concentration occurs in the acute angle projections e, and there is a problem that cracks and the like are easily generated.

[0004] Therefore, when cracks or the like occur, it is necessary to perform repairs, and extra work is required, resulting in poor manufacturing efficiency.

[0005]

Therefore, according to the present invention, a columnar space penetrating the cubic block body in the up-down direction, the front-rear direction, and the left-right direction is orthogonally formed at the center of the block body. In the formed three-dimensional frame-shaped block, each corner formed by intersecting the column-shaped space penetrating in the vertical direction, the front-rear direction, and the left-right direction in an orthogonal state is formed on the concave curved surface. A feature is to provide a three-dimensional frame-shaped block as a feature.

Further, the present invention is a formwork apparatus for molding the three-dimensional frame-shaped block according to the present invention, comprising an outer frame body for molding an outer surface, and an inner peripheral surface housed in the outer frame body. A three-dimensional frame-shaped body comprising: a main core body for molding a main core body; and a sub-core body for forming a concave curved surface by being arranged at each corner formed by the main core body intersecting. A block formwork apparatus is provided.

[0007] The formwork device according to the present invention also has the following features.

[0008] The outer frame body has a square bottom shape formed in a plan view, and front, rear, and left sides of a square shape in a side view which are detachably erected at front, rear, left, and right edges of the bottom formed body.・ A right-side surface forming body is provided, and the main core body is a front-and-rear so that a leading edge portion abuts along a peripheral surface of the cylindrical body standing at a central portion of the bottom-side forming body and the cylindrical body. A ring body protruding from the central part of the left and right side surface forming body;

[0009] The sub-core body is disposed at each corner formed by the cylindrical body and the ring body, and is detachably attached to the cylindrical body.

[0010]

Embodiments of the present invention will be described below.

That is, the three-dimensional frame-shaped block according to the present invention has, as a basic structure, a column-shaped space penetrating through a cubic block main body in the up-down direction, the front-rear direction, and the left-right direction. Are formed in an orthogonal state.

As a characteristic structure, each corner formed by intersecting the columnar spaces penetrating in the up-down direction, the front-rear direction, and the left-right direction in an orthogonal state is formed in a concave curved surface. .

The formwork apparatus for forming the above-mentioned three-dimensional frame-shaped block comprises an outer frame body for forming an outer surface, and a main core body housed in the outer frame body for forming an inner peripheral surface. And a sub-core which is disposed at each corner formed by the intersection of the main core and forms a concave curved surface.

The outer frame body has a square bottom shape formed in a plan view and front and rear square shaped side views detachably mounted on front, rear, left and right edges of the bottom formed body. ·left·
The main core body is provided with a right side surface forming body, and the main core body is a cylindrical body erected at the center of the bottom surface forming body, and front, rear, and rear end portions are contacted along the peripheral surface of the cylindrical body. And a ring body protruding from the center of the left and right side surface forming bodies.

The sub-cores are arranged at each corner formed by the cylinder and the ring, and are detachably attached to the cylinder.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

A shown in FIGS. 1 to 3 is a three-dimensional frame-shaped block according to the present invention. The three-dimensional frame-shaped block A is mounted on a cubic block body a in the vertical direction, the front-rear direction, and the left-right direction. The cylindrical spaces b, c, d penetrating therethrough are formed in an orthogonal state at the center of the block body a, and eight cylindrical spaces b, c, d are formed to intersect in the orthogonal state. Each corner is formed in a concave curved surface f.

Thus, the three-dimensional frame-shaped block A is
As shown in FIGS. 4 and 5, four vertical frame forming parts 1, 1, 1, 1 which are arranged at an interval from each other and function as pillar parts,
Eight horizontal frame forming parts 2,2,2,2,3 which respectively traverse between the upper end and lower end of each of the vertical frame forming parts 1,1,1,1 to function as beams. , 3,3,3, and 24 connecting parts between each vertical frame forming part 1,1,1,1 and each horizontal frame forming part 2,2,2,2,3,3,3,3 Are formed in the shape of a cubic frame provided with a plurality of haunch portions 4..., And cylindrical space b, c, d therein, and these cylindrical spaces b,
A large space 5 consisting of a corner concave space g formed between c, d and the concave curved surface f is formed, and a circular side surface central hole 6, 6, 6, 6, 6,6,6 are formed.

Here, since the three-dimensional frame-shaped block A is formed in the shape of a cube and in the shape of a frame, it is arbitrary which surface is to be the upper surface, and a portion which extends in the up-down direction in the mounted state. Can be used as the vertical frame forming section 1 and the portions extending in the front, rear, left and right directions can be used as the horizontal frame forming sections 2 and 3.

Since the three-dimensional frame-shaped block A has a large space 5 and circular center holes 6, 6, 6, 6, 6, 6, 6, the entire three-dimensional frame-shaped block A is formed. In addition, strength as an arch that is strong against a compressive force against external force can be added.

In addition, the concave curved surface f is formed at each of the eight corners formed by the columnar spaces b, c, d intersecting at right angles. In the block A, there is no sharp protrusion or sharp change in cross section (sudden change in cross section), the flow of stress is smooth, stress concentration and furthermore, fatigue fracture can be almost eliminated, and the final strength is reduced. Can be increased.

Further, the three-dimensional frame-shaped block A is
Since the haunch portion 4 having a substantially triangular shape is provided, a large bonding surface can be secured when the three-dimensional frame-shaped blocks A, A are bonded and connected to each other, and reliable connection can be performed.

Next, a mold apparatus B for producing the above-mentioned three-dimensional frame-shaped block A will be described with reference to FIGS.

That is, the formwork apparatus B includes an outer frame body 10 for molding the outer surface of the three-dimensional frame-shaped block A, and a main core body 11 for accommodating the outer frame body 10 and molding the inner peripheral surface. And a sub-core 12 that is arranged at each corner formed by the main core 11 to intersect and forms a concave curved surface.

The outer frame 10 has a bottom surface forming member 13 having a square shape in plan view, and a square shape in side view which is detachably provided on the front, rear, left and right edges of the bottom surface forming member 13, respectively. Front, rear, left and right side surface forming bodies 14, 15, 16, 17 are provided.

The main core body 11 has a cylindrical body 18 erected at the center of the bottom surface forming body 13 and a front, rear, and rear end portions of the cylindrical body 18 which are in contact with the leading edge along the peripheral surface of the cylindrical body 18. Ring bodies 19, 20, 21, 22 projecting from the central portions of the left and right side surface forming bodies are provided.

The ring members 19, 20, 21, and 22 are cylindrical members 1
8 is formed in the same diameter as, and the contact edge 19a, 19a, 20a, 20a, 21a, 21a, 22a, 22a of the arc-shaped contact edge which contacts the peripheral surface of the cylindrical body 18 at the tip edge
And, the arc-shaped contact edges 19b, 19b, 20b, 20b, 21b, 21b, which contact the tip edges of the ring bodies 19, 20, 21, 22 adjacent to the left and right sides.
22b, 22b are formed.

Moreover, the ring members 19, 20, 21, 22 are
A base edge is attached to the center of the inner surface of each of the front, rear, left and right side formations 14, 15, 16, 17 to form front, rear, left and right side formations 14, 15, 16, 17 respectively. It is in a protruding state more inward.

The sub-core body 12 is formed in a substantially triangular pyramid shape so as to fit into each corner formed by the cylindrical body 18 and two adjacent ring bodies 19, 20, 21, 22. The surface facing the apex 12a is formed in an arc surface 12b so that a concave curved surface f is formed by the arc surface 12b.
Is formed of an elastic rubber or a synthetic resin.

The subcore 12 has a structure shown in FIGS.
As shown in FIG. 3, the female screw body 23 is embedded with the screw opening end 23a exposed, and the male screw body 24 is screwed into the female screw body 23 through a male screw insertion hole 25 formed in the cylindrical body 18. Then, the male screw body 24 is detachably attached to the cylindrical body 18 via a female screw body 26 with a knob.

Here, eight male screw insertion holes 25 are formed in the cylindrical body 18, and each of the male screw insertion holes 25 is
Female screw body buried in each sub-core 12 in the arrangement position of
It is formed so as to match the screw opening end 23a of 23.

Next, the procedure for assembling the above-described formwork apparatus B will be described with reference to FIGS.

A cylindrical body 18 is erected at the center of the bottom body 13.

A female screw body of four sub cores 12 in advance
The base ends of the male screw bodies 24 are screwed to the respective 23, and the four male screw bodies 24 are inserted from the outside into four male screw insertion holes 25 formed at the lower part of the cylindrical body 18. And each male screw body
A female screw body 26 with a knob is screwed into the distal end of the cylindrical body 18 from the inside of the cylindrical body 18, and the four sub cores 12 are attached to the cylindrical body 18.

A reinforcing reinforcing bar 27 formed in a cubic frame shape is arranged on the bottom surface forming body 13. 28 is a reinforcing bar support.

The reinforcing bar 27 is formed of a three-dimensional frame A
Inside each vertical frame forming part 1,1,1,1,1 and each horizontal frame forming part 2,2,2,2,3,3,
The three-dimensional frame-shaped block A is reinforced by arranging the reinforcements in 3,3.

Front / rear / left / right side surface formations 14, 15, 16, 17 are erected on the front, rear, left and right side edges of the bottom surface formation 13, respectively.

At this time, the front, rear, left and right side face forming bodies 14, 1
The arc-shaped abutting edges 19a, 19a, 20a, 20a, 21a, 21a, 22a, 22a of the ring bodies 19, 20, 21, 22 protruding from the center of the inner surface of 5, 16, 17 are formed around the cylindrical body 18. Surface, and the circular contact edges 19b, 19b, 20b, 2 of the ring bodies 19, 20, 21, 22 adjacent to the left and right sides.
0b, 21b, 21b, 22b, 22b are brought into contact with each other.

Female screw body of four sub cores 12 in advance
The base ends of the male screw bodies 24 are screwed into the respective 23, and the four male screw bodies 24 are inserted from the outside into four male screw insertion holes 25 formed in the upper part of the cylindrical body 18. And each male screw body
A female screw body 26 with a knob is screwed into the distal end of the cylindrical body 18 from the inside of the cylindrical body 18, and the four sub cores 12 are attached to the cylindrical body 18.

In this way, the formwork apparatus B can be easily assembled, and the concrete C
The solid frame-shaped block A according to the present embodiment can be manufactured by removing the mold after curing for a certain period of time.

The demolding operation can be performed according to the following procedure.

The front, rear, left, and right side formations 14, 15, 16, 17 are removed from the front, rear, left, and right edges of the bottom formation 13, respectively.

Each male screw body 24 screwed to each female screw body 23 and fixing each sub-core 12 to the cylindrical body 18 is operated from the inside of the cylindrical body 18 to obtain each female screw body. By removing the sub cores 12 from the cylinder 23, the eight sub cores 12 are released from the cylindrical body 18, respectively.

At this time, each sub-core 12 is in a state where the arcuate surface 12b is bonded to the concave curved surface f of the molded three-dimensional frame-shaped block A in a fitted state.

The formed three-dimensional frame-shaped block A is lifted up from the cylindrical body 18 and taken out.

Each of the sub cores 12 bonded to the concave curved surface f of the removed three-dimensional frame block A is inserted into the side center hole 6.
Remove through.

In this way, it is possible to easily remove the mold.

FIGS. 13 to 16 show a three-dimensional frame-shaped block A as a second embodiment.
Is manufactured by using a formwork apparatus B as a second embodiment shown in FIG.

That is, although the three-dimensional frame-shaped block A has the same basic shape as the above-described three-dimensional frame-shaped block A of the first embodiment, the three-dimensional frame-shaped block A is adjacent to the three-dimensional frame-shaped block A in the vertical direction, the front-rear direction, and the left-right direction. The curved surfaces f, f are formed to be continuous with each other by a continuous arc surface h so that no acute angle ridge is formed between the adjacent concave curved surfaces f, f.

In this way, the flow of stress is further smoothed, and stress concentration and furthermore, fatigue fracture can be eliminated, so that the final strength can be increased.

Then, the formwork apparatus B as the second embodiment
Has the same basic structure as the formwork apparatus B as the first embodiment described above, but differs in that two sub-cores 12, 12 are integrated.

That is, the sub-core 30 of the formwork apparatus B of the second embodiment has a sub-core forming piece 31 formed in substantially the same shape as the sub-core 12 of the formwork apparatus B of the first embodiment. , 31 are connected by connecting pieces 32 to be integrally formed, and connecting protruding pieces 33, 33, 33, 33 are protruded from the respective sub core forming pieces 31, 31, so that each connecting protruding piece 33 is formed.
Of the connecting protruding pieces 33 of the adjacent sub-core 30 in an abutting manner.

In this manner, the number of the sub cores 30 is reduced by half, the efficiency of the assembling work is improved, and the second
A three-dimensional frame-shaped block A as an embodiment can be easily manufactured.

Here, the procedure for assembling the formwork apparatus B can be performed in the same manner as the procedure for assembling the formwork apparatus B as the first embodiment.

The operation of removing the three-dimensional frame-shaped block A can be performed in the same manner as the three-dimensional frame-shaped block A of the first embodiment.

[0056]

According to the present invention, the following effects can be obtained.

According to the first aspect of the present invention, a columnar space penetrating in the vertical direction, the front-rear direction, and the left-right direction is formed in the cubic block main body in an orthogonal state at the center of the block main body. In the three-dimensional frame-shaped block, each corner formed by crossing a columnar space penetrating in a vertical direction, a front-rear direction, and a left-right direction in an orthogonal state is formed in a concave curved surface.

As described above, the vertical direction, the front-back direction, and
Since each corner formed by crossing the columnar space penetrating in the right and left direction in an orthogonal state is formed on the concave curved surface, stress concentration does not occur at such corner, and as a result, As the compressive strength increases, fatigue fracture decreases, and durability and safety can be improved.

Further, repair work for cracks and the like which has been required conventionally becomes unnecessary, and the production efficiency can be improved.

Furthermore, since each corner is formed in a concavely curved surface, the porosity of the three-dimensional frame-shaped block is increased, and material and manufacturing costs of the three-dimensional frame-shaped block can be reduced. By reducing the weight of the three-dimensional frame block, the workability and transport efficiency of the three-dimensional frame block can be improved,
Construction costs can also be reduced.

According to the second aspect of the present invention, there is provided a mold apparatus for molding the above-mentioned three-dimensional frame-like block, wherein the outer frame body for molding the outer surface and the inner peripheral surface formed by being housed in the outer frame body. It has a main core and a sub-core which is arranged at each corner formed by crossing the main core and forms a concave curved surface.

By arranging the sub-cores at the corners where the main cores intersect in this manner, the concave curved surface can be formed easily and reliably, and inexpensively. A three-dimensional frame-shaped block can be manufactured.

In the third aspect of the present invention, the outer frame is
A bottom surface forming body having a square shape in a plan view, and front, rear, left, and right side forming members having a square shape in a side view that are detachably provided on front, rear, left, and right edges of the bottom surface forming body, respectively. The main core is composed of a cylindrical body that stands upright in the center of the bottom body, and a front / rear / left / right side body that has a leading edge that abuts along the peripheral surface of the cylindrical body. And a ring body projecting from the center.

In this way, the cylindrical body is erected at the center of the bottom body, and the front, rear, left and right side bodies are respectively set at the front, rear, left and right edges of the bottom body. The front, rear, left, and right side surfaces of the ring body project from the center of the ring body, and the leading edge of the ring body abuts along the peripheral surface of the cylindrical body, and is formed by the cylindrical body and the ring body. By arranging the sub cores at each corner, the formwork device can be easily assembled.

According to the fourth aspect of the present invention, the sub-core is disposed at each corner formed by the cylinder and the ring, and is detachably attached to the cylinder.

In this way, since the sub-core is detachably attached to the cylindrical body, the sub-core can be easily attached to the cylinder from the inside of the cylinder.
The sub-core body can be easily removed, the assembling work and the demolding work of the formwork device can be easily performed, and the efficiency of manufacturing the three-dimensional frame-shaped block can be ensured well.

[Brief description of the drawings]

FIG. 1 is a perspective view of a three-dimensional frame-shaped block according to the present invention.

FIG. 2 is a front view of the three-dimensional frame-shaped block.

FIG. 3 is a plan view of the three-dimensional frame-shaped block.

FIG. 4 is a sectional view taken along line II of FIG. 3;

FIG. 5 is a sectional view taken along line II-II of FIG. 3;

FIG. 6 is an explanatory view of removing the formwork device according to the present invention.

FIG. 7 is an exploded perspective view of the same frame device.

FIG. 8 is an explanatory perspective view of an assembly of the same formwork apparatus.

FIG. 9 is an explanatory diagram of a state where concrete is poured into the formwork apparatus.

FIG. 10 is a cross-sectional plan view of the same formwork apparatus.

FIG. 11 is a cross-sectional side view of the same formwork apparatus cut in a diagonal direction.

FIG. 12 is an enlarged sectional side view of a sub core.

FIG. 13 is a perspective view of a three-dimensional frame-shaped block as a second embodiment.

FIG. 14 is a sectional side view of the three-dimensional frame-shaped block.

FIG. 15 is a cross-sectional side view of the three-dimensional frame-shaped block cut in a diagonal direction.

FIG. 16 is an exploded perspective view of a formwork device as a second embodiment.

FIG. 17 is a perspective view of a conventional three-dimensional frame-shaped block.

FIG. 18 is a cross-sectional side view of the three-dimensional frame-shaped block cut in a diagonal direction.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS A Solid frame-shaped block B Form device C Concrete 1 Vertical frame forming part 2 Horizontal frame forming part 3 Horizontal frame forming part 4 Haunch part 5 Large space 6 Side center hole 10 Outer frame body 11 Main core body 12 Secondary core body

Claims (4)

[Claims] 1. A three-dimensional frame-shaped block in which a columnar space penetrating in a vertical direction, a front-rear direction, and a left-right direction is formed in a cubic block main body in an orthogonal state at a central portion of the block main body. A three-dimensional frame-shaped block in which each corner formed by crossing a columnar space penetrating in a vertical direction, a front-rear direction, and a left-right direction in an orthogonal state is formed in a concave curved surface. 2. A molding apparatus for molding a three-dimensional frame-shaped block according to claim 1, wherein an outer frame body for molding an outer side surface and an inner peripheral surface formed by being housed in the outer frame body. A three-dimensional frame-shaped block forming apparatus comprising: a core body; and a sub-core body that is arranged at each corner formed by intersecting the main core body and forms a concave curved surface. . 3. The outer frame body has a bottom surface formed in a square shape in a plan view, and front and rear sides in a square shape in a side view which are detachably provided on front, rear, left and right edges of the bottom surface formed member. A left and right side surface forming body, the main core body is a cylindrical body standing in the center of the bottom surface forming body,
The front, rear, and
3. The three-dimensional frame-shaped block formwork device according to claim 2, further comprising: ring bodies protruding from central portions of the left and right side surface forming bodies. 4. The three-dimensional frame according to claim 2, wherein the sub-core body is disposed at each corner formed by the cylindrical body and the ring body, and is detachably attached to the cylindrical body. Block formwork device.