JP2000141327A - Concrete molding device and concrete molding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the dangerousness such as the development of a severe vibration and noise, the separation of materials and the leakage of a grout and, at the same time, manufacture a good quality molding by a method wherein the bottom surface of a table, on which a form reciprocating to one direction on a horizontal plane, is supported by means of elastic bodies, the apex part of each of which is loosely installed onto the bottom surface of the table. SOLUTION: A form 1 or a table 2 reciprocates to only one direction on a substantially horizontal plane (horizontally reciprocates). Its bottom surface 21 is supported by means of elastic bodies 3, the apex part of each of which is loosely installed onto the bottom surface. In addition, the base part of each elastic body 3 is fixed to a base stand or a base. In this case, since the apex part of the elastic body 3 is not directly fixed to the form 1 or to the bottom surface 21 of the table 2, though the upper part of the elastic body 3 horizontally reciprocates in accompany with the horizontal reciprocating motion of the form 1 or the table 2, the apex part of the elastic body 3 tilts and bends to the direction of the horizontal reciprocating motion. Thus, the dangerousness of a vibration and a noise and of the leakage of a grout is reduced and a good quality molding can be manufactured with a simple structure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete forming apparatus and a concrete forming method using the concrete forming apparatus. Further, the present invention relates to a concrete forming method, in which noise and vibration are reduced, respectively, has a beautiful appearance with a wide range of slump values, and The present invention relates to a concrete molding apparatus and a concrete molding method for producing a high-quality concrete molded product without separation of aggregate.

[0002]

SUMMARY OF THE INVENTION In the production of a concrete molded product, a concrete form which can be vibrated in various directions in order to compact and form a ready-mixed concrete in which cement, aggregate, admixture and water are mixed together. And a concrete formwork mounted on a table vibrated in these various directions. In the concrete molding method using such a concrete form, in order to reduce the weight of the ready-mixed concrete in the concrete form as much as possible, its water content is reduced and hard-mixed concrete with a slump value of about 2 to 8 cm is used. It is preferred to use. However, in compacting such hard mixed concrete, large vibrations, mainly longitudinal vibrations, must be given, and as a result, noise exceeding 110 decibels (dB) and violent vibrations are generated, resulting in pollution. In addition, there is a disadvantage that the concrete form is greatly damaged and the life of the concrete form is shortened.

[0003] In order to overcome such drawbacks caused by using hard mixed concrete in concrete molding, a concrete forming method using soft mixed fresh concrete having a slump value of about 16 cm or more has been developed. In the method using soft mixed concrete, in order to reduce both noise and vibration during molding, 1500 Hz (H
z) Apparatus and method for giving a degree of vibration have been developed. In such an apparatus and method, the material of the ready-mixed concrete is separated, the appearance is poor due to the generation of air bubbles, and the toro leaks from the concrete formwork. Disadvantages.

[0004] As an apparatus and a method for solving such a disadvantage, for example, an apparatus and a method described in JP-A-6-190820 and JP-A-8-239256 are known. However, in these devices and methods, although it is said that the above-mentioned disadvantages caused by vibrating the soft-mixed concrete at a low frequency in concrete molding have been solved, both have a plurality of vibration directions. In this case, the ready-mixed concrete used is limited to a specific composition.

The present inventors have overcome the drawbacks of conventional vibrating devices and methods of vibrating concrete forms or tables on which the concrete forms are placed, generating severe vibrations and noise, material separation and the danger of trolley leakage. And the structure is simple, and the ready-mixed concrete covers a wide range of slump values, and there is no particular restriction on the composition. It is possible to obtain a beautiful, high quality concrete molded product without separation of mortar and aggregate, without leakage of toro, extending the life of concrete formwork,
In addition, the present inventors have made intensive studies to develop a vibration device and a vibration method for a concrete form or a table on which the concrete form is placed without any particular limitation on the composition of the ready-mixed concrete, and have reached the present invention.

[Means for Solving the Problems]

[0006] The first aspect of the present invention relates to a table (hereinafter, referred to as a table) on which a bottom surface of a concrete form (hereinafter, also referred to as a form) or a form which is reciprocated in one direction in a substantially horizontal plane is placed. ) Is supported by an elastic body, the elastic body having a top portion loosely mounted on a bottom surface of a mold or a bottom surface of a table.

According to a second aspect of the present invention, a bottom surface of a concrete form or a table on which the concrete form is placed is reciprocated in one direction in a substantially horizontal plane. Is loosely mounted on the bottom of the concrete formwork or on the bottom of the table on which the formwork is placed, and is supported from both sides in the reciprocating directions of the concrete formwork and the table on which the concrete formwork is placed. A concrete molding device characterized by being supported by a body.

[0008] The third invention uses the concrete molding apparatus of the first invention or the concrete molding apparatus of the second invention, and moves a mold or a table at a stroke of 1-4 cm for 1.5 seconds per second. ~ 4 A concrete forming method characterized by reciprocating and compacting and molding fresh concrete.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION In each of the concrete molding apparatus of the first invention and the concrete molding apparatus of the second invention, the weight of the form is substantially equal to the weight of the ready-mixed concrete filled therein, and there is no particular limitation. . In practice, the weight of ready-mixed concrete filled in the formwork is usually 0.1.
Preferably, the total weight of the formwork and ready-mixed concrete is about 0.2 to 10 tons. The formwork or table is reciprocated in only one direction in a substantially horizontal plane (hereinafter sometimes referred to as horizontal reciprocation). The means for horizontally reciprocating the formwork or table is not particularly limited. For example, a crank, such as a crank and a piston, is preferably used.

In the concrete molding apparatus according to the first aspect of the present invention, the mold or the table is supported by an elastic body whose top is movably mounted on the bottom of the mold or the bottom of the table, and the base is a base. Or it is fixed to the base. The floating mounting means that the top of the elastic body is not directly fixed to the bottom of the mold or the bottom of the table, and the top of the elastic body also reciprocates horizontally with the horizontal reciprocation of the form or table. It means that the top of the elastic body is mounted so as to be inclined and curved with respect to the horizontal reciprocating direction without being translated. At this time, the mold or table is slightly moved in the vertical direction.

More specifically, an axis which is substantially perpendicular to the horizontal reciprocating direction of each of the form and the table is fixed to a portion of the bottom of each of the form and the table where the elastic body is to be attached, and the axis is fixed by this axis. The top of the elastic body is pivotally supported. The elastic body is not particularly limited as long as it can withstand the load of the mold and has flexibility, but in practice, usually, a metal elastic body and an elastic rubber columnar body are preferably used. ,
Metal elastic bodies are particularly preferred, and coil springs are particularly preferred.

The elastic rubber columnar body is formed by molding vulcanized natural rubber and synthetic rubber such as polyisoprene, ethylene propylene rubber, butadiene acrylonitrile rubber, silicone rubber, fluorine rubber, urethane rubber and polychloroprene into a columnar body. . The shape of the cross section of the elastic rubber columnar body (the plane perpendicular to the long axis direction, the same applies hereinafter) is not particularly limited, but in practice, it is usually circular, elliptical to elliptical, rectangular, square, hexagonal, and the like. May be used, but a circle and an ellipse are preferred.

The overall shape of the elastic rubber columnar body may be a drum-shaped bulge outward at the center and a drum-shaped bulge inward at the center. Further, the elastic rubber columnar body may be reinforced by inserting a metal plate or a metal wire therein. The load spring constants of the metal elastic body and the elastic columnar body are preferably about 1.5 to 30 kgf / mm and about 5 to 100 kgf / mm, respectively.

Further, the lateral load spring constant of the metal elastic body is such that the top of the elastic body is loosely attached, and the top is fixed, so that the top is fixed directly to the bottom of the mold or the bottom of the table. The lateral load spring constant of the fixed metal elastic body is reduced to about 3/4 or less, and is 0.5 to 1
It may be about 5 kgf / mm. In the case of an elastic rubber column, the lateral load spring constant is preferably about 1 to 50 kgf / mm. Further, in the concrete molding device of the first aspect of the present invention, since the elastic body is loosely mounted on the top, noise and vibration can be significantly reduced.

The number of elastic bodies attached to the bottom surface of the formwork or the bottom surface of the table depends on the area of the bottom surface, the magnitude of the load applied to the bottom surface, the magnitude of the load spring constant of the elastic body, and the like, and can be specified unconditionally. However, in practice, usually, when the weight of the ready-mixed concrete filled in the formwork is 1 t or less, about 4 to 10 pieces are preferable, and the weight of the ready-mixed concrete filled in the formwork exceeds 1 t and 5 t or less. In this case, about 4 to 30 pieces are preferable. It is preferable that these elastic bodies are arranged so as to averagely bear the load applied to the bottom surface of the mold or the bottom surface of the table, respectively.

In the concrete molding apparatus according to the second aspect of the present invention, the formwork or the table is provided on the bottom surface thereof in the same manner except that the elastic body in the concrete molding apparatus according to the first aspect of the invention is replaced with a bearing. It is supported by the mounted support. This support body has its base portion pivotally supported on a base or base, and its top portion is swung with the horizontal reciprocating direction of the formwork and the table. The support may be a rigid body capable of supporting a formwork filled with ready-mixed concrete or a table, and its material and shape are not particularly limited, but a metal plate and a metal rod are preferable.

The supporting body is supported on both sides of the supporting elastic body, and the top of the supporting body is swung between the two supporting elastic bodies in the respective horizontal reciprocating directions of the mold and the table. . The receiving elastic body may be an object having a cushioning property, and there is no particular limitation on a material, a shape, and the like. The supporting elastic body is preferably a metal elastic body or an elastic rubber object. Typical examples thereof include a coil spring and a plate and a rod made of an elastic rubber. Among them, the coil spring is most preferable. The support elastic body is supported by the support elastic body support on the surface opposite to the surface that receives the support. Further, it is preferable that the support surface of the support elastic body that supports the support body coincides with the contact surface of the support body.

Using the concrete molding apparatus of the first invention or the concrete molding apparatus of the second invention, ready-mixed concrete is suitably compacted and molded. That is, depending on the magnitude of the slump value of the ready-mixed concrete, the stroke of the formwork or table of about 1 to 4 cm and the number of horizontal reciprocating movements of 1.5 to 4 times per second are appropriately combined.
The magnitude of the vibration acceleration generated by the horizontal reciprocation of the formwork or table is preferably about 0.54 G (gravity acceleration or less), and is preferably about 0.08 to about 0.54 G. Is particularly preferred. In order to set the vibration acceleration to a desired magnitude, the number of vibrations and the stroke may be set to values calculated in advance within the above range. Further, as the weight of the ready-mixed concrete filled in the formwork increases, the lateral load increases. Therefore, care must be taken to reduce the number of horizontal reciprocating movements as the weight of the ready-mixed concrete filling the form increases, so that the lateral load in horizontal reciprocating does not become excessive.

If the stroke of the formwork or the table and the number of horizontal reciprocating movements are out of the above-mentioned ranges, it is difficult to obtain a concrete molded article having a beautiful appearance. In order to further enhance the appearance of the surface of the concrete molded product, the slump value of the ready-mixed concrete is preferably 16 cm or more. On the other hand, the slump value of the ready-mixed concrete is preferably 24 cm or less in order to prevent the aggregate from separating from the ready-mixed concrete and increase the strength. However,
Some compositions do not prevent the use of ready-mixed concrete with a slump value of less than 16 cm or greater than 24 cm. The slump value is a value measured according to Japanese Industrial Standard (JIS) A1101.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described more specifically with reference to a concrete example of a concrete molding apparatus shown in the drawings, but the present invention is not limited to this embodiment. In addition, each of the concrete forming apparatus of the first invention and the concrete forming apparatus of the second invention shown in the drawings is schematically illustrated, and the dimensions and the like are not accurately illustrated. FIG. 1 is a side view of a typical example of the concrete molding apparatus of the first invention of the present invention, and FIG. 2 is a partially enlarged view of the metal coil spring mounting portion of the concrete molding apparatus of the first invention shown in FIG. FIGS. 3 and 3 are partial enlarged side views of the metal coil spring mounting portion of the concrete molding apparatus of the first invention shown in FIG. However, in FIG. 1, the end faces of the cut portions of the mold and the table are shown.

The concrete form 1 is placed on a table 2. A front wall 22 is provided on the motor side of the table 2. A metal coil spring (hereinafter referred to as a coil spring) is used as an elastic body on the bottom surface 21 of the table 2.
3, ..., 3 are freely mounted. A support rod 41 protrudes from the front wall 22 of the table 2. The tip of the connecting rod 42 is connected to the tip of the support rod 41. The base end of the connecting rod 42 is attached to the periphery of the rotating flange 5. The rotating flange 5 is fixed at its center to the rotating shaft 6 of the electric motor. By driving the motor, the rotating flange
5 is rotated, and the rotation of the rotating flange 5
The concrete form 1 is reciprocated in one direction (the left-right direction in FIG. 1) in a substantially horizontal plane by the crank movement of the horizontal direction.

FIG. 2 shows a coil spring 3 in which the top is loosely mounted on the bottom surface 21 of the table 2 of the concrete formwork 1 and the base is fixed to a base or a base.
FIG. 2 is a partially enlarged perspective view of the concrete forming apparatus of the first invention for observing the present invention, as viewed obliquely from below. That is, the reciprocating direction of the concrete form 1 in the substantially horizontal plane (the direction of the arrow in the drawing) is on the bottom surface 21 of the table 2 of the concrete form 1.
A shaft 31 orthogonal to the shaft is supported by bearings 32,32.

On the other hand, an engaging member 33 is fixed to the top of the coil spring 3. The engaging member 33 is a substantially semi-elliptical plate having a through hole 331 formed therein. The through hole 331 is aligned with the horizontal reciprocating direction of the concrete form 1 so that the coil spring 3
It is fixed to the top of. Insert the shaft 31 into the through hole 331 of the
The coil spring 3 is loosely mounted on the bottom surface 21 of the table 2 of the concrete form 1 by allowing the coil spring 3 to pass through.

FIG. 3 is an enlarged side view of the portion where the coil spring is mounted to show the state of the coil spring when the concrete form is reciprocated horizontally. That is, in the case of (b) in which the concrete form 1 is moved in the horizontal direction, for example, rightward as viewed in the drawing, the coil spring 3 is also moved upward with the coil spring 3 rightward in the drawing. Moved, the coil spring 3 is bent, and the end face of the top is inclined. The concrete form 1 is slightly moved up and down in accordance with the curvature of the coil spring 3.

FIG. 4 is a side view of a bearing portion of the concrete molding apparatus according to the second invention. However, in FIG. 4, the bearing rod 41 to the rotating shaft 6 of the electric motor are omitted because they are the same as those of the concrete forming apparatus of the first invention shown in FIG. Further, a indicates a medium state in which the table is stopped, and b indicates a swinging state in which the table is moved.

That is, the support body 7 is a rectangular metal plate having both ends semicircular, and the semicircular portions at both ends include:
Each has an upper hole 71 and a lower hole 72.
The shaft 31 is inserted into the upper hole 71 of the support 7 and the support 7
The top of 7 is pivotally supported by a bearing 32, and the top of the support 7 is loosely mounted on the bottom surface of the table 2. The bearing 8 is fixed to the base or the base. Bearing body
The shaft 81 is inserted through the lower hole 72 of 7, and the base of the support 7 is supported by the bearing 8 and is mounted on the base or base in a floating manner.

Coil springs 91 and 92, which are support elastic members for receiving the support 7 in the swinging state, are provided on both sides of the support 7 in the horizontal reciprocating direction. Thus, these coil springs 91 and 92 are provided on supporting elastic body supports 93 and 94 on the surface opposite to the surface for supporting the supporting body 7.
Respectively supported. When the bearing surfaces of the coil springs 91 and 92 are received by the bearing body 7,
The contact surfaces with the coil springs 91 and 92 of FIG. 7 substantially coincide with each other.

In the middle state as shown in a, both of the coil springs 91 and 92 are substantially free. In the swinging state shown in FIG. 2B, for example, when the table 2 is moved to the left in the drawing, the top of the support 7 is moved to the left in the drawing. The peripheral surface of the bearing 7 is brought into contact with the bearing surface of the coil spring 91 (this contacted surface is the contact surface), and the top of the bearing 7 is further moved leftward in the drawing. The coil spring 91 is compressed, and when the table 2 reaches the end of its horizontal reciprocation and stops, the top of the support 7 also stops.

In the concrete molding method according to the third aspect of the present invention, the relationship between the weight (t) of the ready-mixed concrete filled in the mold and the maximum number of reciprocating horizontal movements (times / second) of the mold was examined. The results are shown in the graph of FIG. The graph in FIG. 5 shows that the number of horizontal reciprocating movements of the form must be reduced as the weight of the ready-mixed concrete filled in the form is increased. When the concrete weight is 0.5t, the number of horizontal reciprocating movements of the formwork can be up to 4 times / sec. For example, when the fresh concrete load is increased to 5t, the horizontal reciprocation of the formwork This indicates that the number of movements must be a maximum of 1.5 times / second.

In the concrete molding method according to the third aspect of the present invention, ready-mixed concrete having various slump values is compacted and formed by changing the number of horizontal reciprocating motions and strokes of the formwork. The appearance and the like were determined by visually observing the presence, size, and number of bubbles and cracks.

Ready-mixed concrete having various slump values was prepared by blending the following materials. Cement: Ordinary Portland cement (specific gravity 3.16) Fine aggregate: Sand native to Ichi, Chiba (specific gravity 2.6, maximum size 5 mm) Coarse aggregate: Crushed stone from Kuzu, Tochigi prefecture (specific gravity 2.75, maximum size 20 mm) ) Admixture: Water reducing agent (Sunflow product name, a product of Sunflow Corporation) Water: Groundwater The results are shown in FIG. The symbols in FIG. 6 indicate the following criteria.

◎: Great separation resistance, no separation between mortar and aggregate in concrete molded product, good appearance. Δ: The appearance of the molded product is such that bubbles and cracks are generated, the number thereof is undetermined, and its stability is lacking. ●: Low separation resistance, separation of mortar and aggregate was observed in concrete moldings, causing a decrease in strength, and the appearance was poor.

The separation resistance of the concrete molded product was determined as follows. That is, the test mold shown in FIG. 7 is filled with ready-mixed concrete, and the test mold is placed and fixed on a table of the concrete forming apparatus of the first invention together with the mold filled with ready-mixed concrete. The table was horizontally reciprocated at a predetermined number of reciprocating horizontal strokes and strokes, compacted and molded. Thereafter, the concrete in each of the portion A and the portion B of the mold was collected, washed with water, the coarse aggregate remaining on the 5 mm sieve was collected, heated to 105 ° C. until a constant weight was obtained, and dried. The separation resistance was calculated from the dry weight according to the following equation.

That is, separation resistance (%) = {A / (A + B)} × 2 × 100 where A and B indicate the weight of the concrete collected from the portions A and B of the formwork, respectively. If the separation resistance calculated by this formula is 90% or more, the separation resistance is evaluated as being large and suitable for practical use. On the other hand, if the separation resistance is less than 90%, the separation resistance is low and cannot be used practically. Is evaluated. The slump value is based on Japanese Industrial Standards (J
IS) Measured according to A1101. The appearance of the molded product is the result of observing the concrete molded product with the naked eye.

In FIG. 6, for example, a slump value of 16
For fresh concrete of cm, the number of horizontal reciprocating movements is 3
When the stroke is 3 cm at times / second, the magnitude of the acceleration is 0.54 G. However, the obtained concrete molded product has high separation resistance, and the separation of mortar and aggregate in the concrete molded product is observed. In addition, when the number of horizontal reciprocating movements is 4 times / sec and the stroke is 1 cm, the stroke is 3 times / sec. In the case of 2 cm and when the number of horizontal reciprocating motions is 2 times / sec and the stroke is 4 cm, the magnitude of the acceleration is 0.32 G, 0.36 G and 0.32 G, respectively, but the obtained concrete is small. The appearance of any of the molded products indicates that the product may have bubbles and cracks, and thus lacks stability.

It should be noted that even if the slump value of the ready-mixed concrete is the same, the result shown in FIG. Further, by the concrete molding apparatus and the concrete molding method of the present invention, the noise, which was about 110 dB in the past, is greatly reduced to about half to about 65 to 75 dB, and the vibration is also greatly reduced.

[0037]

According to the present invention, the risk of vibration and noise as well as the risk of spillage are reduced, the structure is simple, and the ready-mixed concrete covers a wide range of slump values, and the composition is not particularly limited. It is compacted and molded sufficiently, has no appearance of air bubbles, has a beautiful appearance, and can obtain a high quality concrete molded product with no segregation of aggregates, and also significantly reduces damage and consumption of formwork. Thus, the service life of the formwork is extended.

[Brief description of the drawings]

FIG. 1 is a side view of a typical example of a concrete forming apparatus according to the first invention.

FIG. 2 is a partially enlarged perspective view of the metal coil spring mounting portion of the concrete molding apparatus of the first invention shown in FIG. 1 as viewed obliquely from below.

FIG. 3 is a partially enlarged side view of a metal coil spring mounting portion of the concrete molding apparatus of the first invention shown in FIG. 1;

FIG. 4 is a side view of a typical example of the concrete forming apparatus of the second invention.

FIG. 5 is a graph showing the relationship between the weight of ready-mixed concrete filled in a mold and the maximum number of horizontal reciprocating movements of the mold in the concrete molding method of the third invention.

FIG. 6 is a graph showing the results of compaction of ready-mixed concrete having various slump values by changing the number of horizontal reciprocating motions and strokes of a form in the concrete molding method of the third invention.

FIG. 7 is a perspective view of a mold used to determine the separation resistance of concrete.

[Explanation of symbols]

 1 Concrete formwork 2 Table 21 Bottom surface 22 Front wall 3 Metal coil spring 31 Shaft 32 Bearing 33 Engagement tool 331 Through hole 41 Bearing rod 42 Connecting rod 5 Rotating flange 6 Rotating shaft of motor 7 Bearing 71 Upper hole 72 Lower hole 8 Bearing 81 Shaft 91 Coil spring 92 Coil spring 93 Support elastic support 94 Support elastic support

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] October 29, 1999 (1999.10.
29)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 6

[Correction method] Change

[Correction contents]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] Claim 10

[Correction method] Change

[Correction contents]

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

According to the first aspect of the present invention, there is provided a concrete formwork (hereinafter, also referred to as a formwork) which is reciprocated in one direction in a substantially horizontal plane or a table on which a concrete formwork is placed (hereinafter, referred to as a table). The bottom surface of the elastic body is supported by an elastic body, and the top of the elastic body is loosely mounted on the bottom surface of the mold or the bottom surface of the table , and the base is fixed, and the agitator is supported by the base as a fulcrum.
It is a concrete forming apparatus characterized by being hampered .

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007] The second invention is substantially horizontal plane or in the bottom surface of the mold that is reciprocated in one direction the bottom surface of the tables is supported by a scaffold, said supporting Uketamawakarada the bottom surface of the top portion formwork or floating manner being allowed mounted on the bottom of the tables,
In addition, the base portion is supported in a floating manner, and the base portion is used as a fulcrum.
Is allowed inciting and, further, a concrete molding apparatus characterized by comprising been受支from both sides in受支elastic body for forward <br/> backward direction of the formwork or tables.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

The third invention uses the concrete molding device of the first invention or the concrete molding device of the second invention, and reciprocates the formwork or table with a stroke of 1 to 4 cm per second. 1.5-4 times
And reciprocate in one direction on a substantially horizontal plane to compact the ready-mixed concrete to form ready-mixed concrete
And a high quality concrete molded product is obtained .

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

In the concrete molding apparatus according to the first aspect of the present invention, the mold or the table is supported by an elastic body whose top is movably mounted on the bottom of the mold or the bottom of the table, and the base is a base. Or it is fixed to the base. The floating mounting means that the top of the elastic body is not directly fixed to the bottom of the mold or the bottom of the table, and the top of the elastic body also reciprocates horizontally with the horizontal reciprocation of the form or table. It means that the top of the elastic body is mounted so as to be inclined and curved with respect to the horizontal reciprocating direction without being translated. Then, the elastic body supports the fixed base
Incited as At this time, the mold or table is slightly moved in the vertical direction.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

The concrete molding apparatus according to the second aspect of the present invention.
The formwork or table is made of concrete according to the first aspect of the present invention.
Same as above except that the elastic body in the molding device was replaced with a bearing
And the bearings floatingly mounted on their bottoms
It is supported. This support has a base
Is floatingly supported on the base, and the top is
It swings along the frame and the horizontal reciprocating direction of the table.
MereAgitated with the base as a fulcrumYou. Branch
The bearing body is a formwork filled with ready-mixed concrete and a tape
Any material can be used as long as it is a rigid body that can support
Although there is no particular limitation, metal plates and metal rods are preferred.
New

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction contents]

Using the concrete molding apparatus of the first invention or the concrete molding apparatus of the second invention, ready-mixed concrete is suitably compacted and molded. That is, a stroke of about 1 to 4 cm of the formwork or table and 1.5 to 4 times of horizontal reciprocation per second are appropriately combined according to the magnitude of the slump value of the ready-mixed concrete.
The magnitude of the vibration acceleration generated by the horizontal reciprocating motion of the formwork or table is preferably about 0.54 G (gravity acceleration or less) and is preferably about 0.08 to about 0.54 G. Is particularly preferred. In order to set the vibration acceleration to a desired magnitude, the number of vibrations and the stroke may be set to a value calculated in advance within the above range. Also, as the weight of the ready-mixed concrete filled in the formwork increases, the lateral load increases. Therefore, care must be taken to reduce the number of horizontal reciprocating movements as the weight of the ready-mixed concrete filled in the mold increases, so that the lateral load in horizontal reciprocating operation does not become excessive.

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

FIG. 3 is an enlarged side view of the portion where the coil spring is mounted to show the state of the coil spring when the concrete form is reciprocated horizontally. That is, in the case of (b) in which the concrete form 1 is moved in the horizontal direction, for example, rightward as viewed in the drawing, the coil spring 3 is also moved upward with the coil spring 3 rightward in the drawing. Instigated by moving and fixed base
As a result, the coil spring 3 is bent, and the end face of the top is inclined. Note that coil spring 3
The concrete formwork 1 is slightly moved up and down in response to the curvature of.

[Procedure amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction contents]

That is, the support body 7 is a rectangular metal plate having both ends semicircular, and the semicircular portions at both ends include:
Each has an upper hole 71 and a lower hole 72.
The shaft 31 is inserted into the upper hole 71 of the support 7 and the support 7
The top of 7 is pivotally supported by a bearing 32, and the top of the bearing 7 is loosely mounted on the bottom surface of the table 2. The bearing 8 is fixed to the base or the base. Bearing body
The shaft 81 is inserted through the lower hole 72 at the base of
The base is rotatably mounted on a base or base supported by bearings 8. Thus, the bearing 7 is at its base
Is incited with the fulcrum as a fulcrum.

Claims (11)

[Claims] 1. A bottom surface of a concrete formwork or a table on which a concrete formwork is reciprocated in one direction in a substantially horizontal plane is supported by an elastic body.
A concrete forming apparatus characterized in that the elastic body has a top portion movably mounted on a bottom surface of a concrete formwork or a bottom surface of a table on which the formwork is placed. 2. The elastic body has a load spring constant of 1.5 to 30 k.
The concrete molding apparatus according to claim 1, wherein the concrete forming apparatus is a metal elastic body having a gf / mm and a lateral load spring constant of 0.5 to 15 kgf / mm. 3. The concrete molding apparatus according to claim 2, wherein the metal elastic body is a coil spring. 4. The elastic body has a load spring constant of 5 to 100 kg.
The concrete molding apparatus according to claim 1, wherein the concrete molding apparatus is an elastic rubber columnar body having a lateral load spring constant of 1 to 50 kgf / mm at f / mm. 5. The concrete molding apparatus according to claim 4, wherein the elastic rubber column is a synthetic rubber column. 6. A concrete form which is reciprocated in one direction in a substantially horizontal plane or a bottom surface of a table on which the concrete form is placed is supported by a support, the support having a top formed by a concrete form. Elastically mounted on the bottom surface of the concrete formwork or on the bottom surface of the table on which the formwork is placed, and in both directions of reciprocation of the concrete formwork and the table on which the concrete formwork is placed. A concrete forming apparatus characterized by being made. 7. The concrete forming apparatus according to claim 6, wherein the receiving elastic body is a metal elastic body. 8. The concrete molding apparatus according to claim 7, wherein the metal elastic body is a coil spring. 9. The concrete forming apparatus according to claim 6, wherein the receiving elastic body is an elastic rubber object. 10. The concrete forming apparatus according to claim 1, wherein a concrete formwork or a table on which the concrete formwork is placed is stroked by one stroke.
A concrete molding method characterized by compacting and molding fresh concrete by reciprocating 1.5 to 4 times per second at ４4 cm. 11. The slump value of ready-mixed concrete is 16 to
7. The concrete molding method according to claim 6, wherein the thickness is 24 centimeters.