JP2002321211A - Method and apparatus for molding l-shaped earth retaining concrete block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and an apparatus which can mold concrete block of high quality with a high degree of productivity by a method wherein ready mixed concrete is cast into a molding form 18, in which a vertical frame part 11 having a molding cavity for a vertical wall part 2 is made integral to a bottom plate frame part 12 having a molding cavity for a bottom plate part 3 to mold an L-shaped earth retaining concrete block 1, in which the vertical wall part 2 is made integral to the bottom plate part 3. SOLUTION: In the molding method, the vertical frame part 11 is set horizontally to cast ready mixed concrete C into an upper opening, and a temporary cover 14 is fixed onto the opening, and then the orientation of the molding form 18 is changed, and the frame part 11 is made vertical to set the bottom frame part 12 upward, following which the cover 14 is brought into surface contact with a vertically fixed cover 22 so as to be connected, and the concrete C is supplied from the part 12 and cured to remove the frames. In the molding apparatus 10, a molding form 20, in which the molding form 18 is mounted on a frame 19, is combined with an upright fixing cover plate 21 having the cover 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earth retaining wall which is formed by integrating a vertical wall portion serving as an earth retaining wall and a bottom plate portion fixed on the earth surface in an L-shape. The present invention relates to a molding method and a molding apparatus for an earth retaining concrete block used for forming a boundary wall such as a wall or a residential land.
Hereinafter, the elbow concrete block for earth retaining is abbreviated as an elcon block.

[0002]

2. Description of the Related Art The above-mentioned elcon block 1 (see FIG. 6) has a plate-shaped vertical wall portion 2 and a plate-shaped bottom plate portion 3 which intersect integrally in an L-shape, and a back surface of the vertical wall portion 2 and the bottom plate portion 3. It has a basic shape in which reinforcing ribs 4 are raised on the inside of the L-shape, the bottom plate 3 is fixed on the ground, the side surfaces 5 of the vertical wall portions 2 are arranged in parallel with each other, and embankment on the back surface In recent years, it has become very popular since earth retaining works and boundary wall works such as residential lands can be performed easily and quickly.

[0003] The above-mentioned molding method and molding apparatus for the Elcon block 1 include a known example of a "single casting form" such as Japanese Patent No. 20024959. First, a molding frame having a molding cavity of the Elcon block 1 is used. Then, the fresh concrete is poured and poured while the forming frame portion of the vertical wall portion 2 is in the horizontal posture state. Thus, a compacting method and a compacting apparatus are provided in which a dense ready-mixed concrete is filled and insufficient ready-mixed concrete is replenished.

On the other hand, Japanese Patent Application Laid-Open No. 8-52722 discloses that
Similarly, the molding frame having the molding cavity of the Elcon block 1 is formed into a combined set of two surface-bonded sets with the molding frame of the vertical wall portion 2 in a vertical position, and the ready-mixed concrete is poured into the molding frame in the vertical position. A molding method and a molding apparatus of a “double casting form” in which the molding is performed are shown.

[0005]

In the above-mentioned prior art single type, the vertical wall frame portion filled with ready-mixed concrete is placed in a substantially vertical position and held by vibrating and vibrating. However, the lid plate of the frame portion of the vertical wall portion carries a "large ready-mixed concrete load". Therefore,
The large load may cause the swelling deformation of the cover plate, which may "degrade the surface quality of the vertical wall portion 2 which should be a beautiful surface". To prevent this problem, the maximum height is 2.5 m. It has to be constructed as a heavy-weight lid plate with a complicated structure that can withstand the large load of the ready-mixed concrete of the vertical wall portion 2 that becomes
The attaching / detaching operation is a complicated and tedious operation requiring a great deal of trouble, resulting in poor workability and lack of mass production productivity of the Elcon block.

[0006] In the twin type, the "cover plate carrying a large amount of ready-mixed concrete load" is joined and fixedly connected from both sides of a common fixed wall plate, so that each cover plate carries a large size. Although the load of ready-mixed concrete can be effectively offset, the work of aligning and fixing large heavy-weight molded frames in a symmetrical form is extremely complicated, and takes time and trouble, and there is a danger in work. It is not suitable for mass production of Elcon block which requires ultra-mass production and low cost.

Further, since the vertical concrete construction method is employed in which ready-mixed concrete is poured and poured from above the frame portion of the vertical wall portion in a vertical posture in the symmetrical two-set connection form, the height of the vertical wall portion 2 is approximately 1 Medium- and large-sized ones with a diameter of more than .5 meters have a problem in quality that "aggregate with a large specific gravity sinks down and collects, and the concrete component becomes insufficient or missing.

An object of the present invention is to provide a molding method and a molding apparatus for an Elcon block which are high in quality and excellent in productivity by solving the above-mentioned disadvantages of the prior art.

[0009]

SUMMARY OF THE INVENTION The present invention for solving the above-mentioned technical problem is to provide an earth retaining concrete block in which a vertical wall portion and a bottom plate portion are integrally formed to form an elliptical shape. Forming the vertical wall frame portion having the cavity and the bottom plate frame portion having the cavity with the bottom plate frame portion by forming a ready-mixed concrete by casting the concrete into a molding frame body; Then, ready-cast concrete is poured from the upper opening, and a temporary lid plate is attached and fixed to the upper opening, and then the posture of the molding frame is changed so that the vertical wall frame is in a vertical posture, and The frame portion is set to the upward position, and then the temporary cover plate is surface-bonded to a separate standing and fixed cover plate body and combined and fixed, and the ready-mixed concrete is refilled from the bottom plate frame portion. The soil characterized by being cured and then demolded. A molding method "in order for the El-shaped concrete block,

[0010] A molding device for molding an earth retaining block-shaped concrete block in which the vertical wall portion and the bottom plate portion are integrally formed to form an el-shaped shape by casting of ready-mixed concrete, and having a molding cavity for the vertical wall portion. A vertical wall frame portion having a removable temporary lid plate at an upper opening portion, and a bottom plate having a molding cavity of the bottom plate portion, and a lid plate which is detachably mounted at the upper opening portion and can be partially opened and closed. A molding main body, in which the frame is connected to and integrally fixed with the frame, is mounted and fixed on the frame, and the vertical wall frame is configured to be freely selectable between a horizontal posture and a vertical posture. Molding of an L-shaped concrete block for earth retaining, characterized in that the temporary cover plate of the wall frame portion is surface-joined and a standing fixed cover plate body having a fixed cover plate which can be detachably connected and fixed is provided. Device ".

In other words, the method and apparatus for molding an Elcon block according to the present invention employ a facing method in which a vertical wall portion in which the surface quality is particularly important and high quality concrete is required to be horizontal is provided. By making the lid of the frame part a lightweight and simple temporary lid plate that makes it easy to attach and detach the work easily, and connecting the temporary lid plate to the high rigid fixed lid plate, the strong gravitational load of cast-in-place ready-mixed concrete can be reduced. It is characterized by a construction method and structure in which it is supported and formed on the vertical wall of high-quality concrete. In order to make the posture change of the main part of the molding die particularly easy, the main part of the molding die can be easily operated by a lift arm of a lift truck. Lift point bar ".

[0012]

The above-described molding method and molding apparatus of the present invention can be molded into a high-quality Elcon block having no shortage or lack of defective cement components because the vertical wall portion is a horizontal plane casting method. The temporary lid of the vertical wall part to be attached and detached is lightweight and simple, and the attaching and detaching work is easy, and the posture change of the main part of the molding die can be easily and safely changed by the lift point bar means and the like. Workability and work efficiency of a series of molding processes are particularly improved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an embodiment of an apparatus for forming an L-shaped concrete block for earth retaining according to the present invention is shown in FIGS.
This will be described with reference to FIG. That is, the molding apparatus 10 of this embodiment
6A shows a molding device for an Elcon block 1A in which the side surface 5 of the vertical wall portion 2 shown in FIG. 6A is a flat surface having no unevenness. A vertical wall frame 11 detachably provided in the upper opening, and a molding cavity for the bottom plate 3, which communicates with the vertical wall frame 11, and
A lid plate 15 is detachably provided in the upper opening, and a “groove-shaped rib frame portion 13 surrounded by the reinforcing ribs 4” is provided inside the vertical wall frame portion 11 and the bottom plate frame portion 12. The provided forming frame 18 forms a main part.

Then, the molding frame 18 is connected to the vertical wall frame 11.
Is mounted and fixed on a rectangular frame 19 in a lattice form that can be set to either a horizontal posture or a vertical posture, and
0 is configured. Then, when the concrete main body 20 is lifted in a state where the ready-mixed concrete is poured into the molding frame 18, the vertical wall frame 11 becomes one of a substantially horizontal posture and a substantially vertical posture due to gravity balance. 17A and 17B are provided at the upper and lower intermediate points between the front end portion and the rear end portion of the rectangular frame 19 and extend slightly to the side of the rectangular frame 19, and the forklift L lifts the main part 20 of the mold by the fork arm L of the forklift truck. Or the above-mentioned posture can be selected.

The temporary cover plate 14 is lightweight and simple enough to be easily attached to and detached from the vertical wall frame portion 11 to close the opening of the vertical wall frame portion 11 (this embodiment is 1.6 mm thick). Cover plate 15 of the bottom plate frame 12 is
Opening / closing part 16 that can only partially open and close the lower half part when attached to
It has.

The molding apparatus 10 of the present invention has a combined structure of the above-described molding die main portion 20 and an upright fixed lid plate 21 described in detail below. That is, (see FIG. 2 (C)). The upright fixed cover plate 21 has a rigid cover plate 22 in the form of a flat cliff which is vertically fixed to a base 24 such as a foundation concrete or a base. The main part of the cover plate 22
Is a temporary cover plate 14 attached to the vertical wall frame portion 11 of the molding die main portion 20.
Vertical frame 1 filled with ready-mixed concrete into a fixed lid plate having a surface space that can be fixedly held by surface joining
The temporary cover plate 14 is provided with a connecting and fixing means which is surface-bonded and united so as to be tightly held during the curing of the ready-mixed concrete.

That is, the cover plate portion 22 is filled with ready-mixed concrete to prevent the temporary cover plate 14 of the vertical wall frame portion 11 in a vertical posture from being bulged outward by the gravity of the ready-mixed concrete and deformed. The part 2 has a flat surface, dense concrete, and is formed into a molded holding plate to be cured and solidified. It has a sufficient mechanical strength, and a stay 25 for reinforcing the strength is constructed in a rigid body provided on the back surface. A well-known electric vibrator 23 for giving a slight vibration to the vertical wall frame 11 is disposed at the center of the back.

The "means for connecting and fixing the vertical frame 11 to the cover plate 22" in this embodiment (see FIG. 3 (C)) uses a vice-type fixing device 28 to fix the flange of the vertical frame 11 to the flange. The portion and the peripheral edge of the cover plate portion 22 are detachably sandwiched and locked. Reference numeral 26 in the figure denotes a “demolding extrusion screw” for extruding and removing the Elcon block 1A molded and cured in the molding frame 18. Reference numeral 27 in the drawing denotes a core pin for providing a through hole in the reinforcing rib 4.

Next, an embodiment of the molding method of the present invention for molding the Elcon block 1 using the molding apparatus 10 of the above embodiment will be described with reference to FIG. That is, first, the molding die main part 20 is fixed with the “upper surface of the vertical wall frame part 11 in the horizontal posture”, the temporary cover plate 14 is removed, and the release agent is applied inside to prepare for molding. Subsequently, ready-mixed concrete C is poured and poured from the upper opening of the vertical wall frame 11 from which the temporary cover plate 14 has been removed to form the molded frame 1.
In addition to filling the molding cavity of No. 8 sufficiently, the surface of the ready-mixed concrete C in the vertical wall frame portion 11 is smoothed to give a necessary surface finish, and the temporary cover plate 14 is pressed and attached and fixed.

Thereafter, the catch claw 29 of the lift arm L of the forklift truck is hooked and lifted on the lift point bar 17A of the molding die main portion 20 to lift the molding die main portion 20 into which the ready-mixed concrete C is cast. The vertical wall frame 11 is turned to a vertical position and the bottom plate frame 12 is converted and set to a position in which the bottom plate frame 12 is located upward, and the temporary cover plate 14 is turned upright. Pressing the cover plate portion 22 of the fixed cover plate member 21 to perform surface bonding set "
0 is placed on the base 24.

Subsequently, the substrate portion 22 and the temporary cover plate 1 in that state are
4 is tightly connected by the above-mentioned connecting and fixing means to be integrally combined and connected, and the ready-mixed concrete C which is densely poured into the molding cavity in the vertical / inclination posture by "gravity of the ready-mixed concrete C due to the above-mentioned posture reversal". The opening / closing portion 16 at the tip end of the bottom plate frame portion 12 which has become the uppermost point due to the inversion of the vertical wall frame portion 11 is opened to replenish the ready-mixed concrete C.

In this way, the injection and filling of the ready-mixed concrete C is completed, and the shaping frame 18 combined with the standing fixed lid plate 21 is vibrated for a short time by the electric vibrator 23 of the standing fixed lid plate 21. In addition, the ready-mixed concrete C is made into a “more densely packed state”, and is cured and solidified while maintaining an appropriate solidification time such as 24 hours.

After that, the main part 20 of the mold is restored and set to the "original posture in which the vertical wall frame part 11 becomes horizontal", and the temporary lid plate 1 is set.
4. Remove the cover plate 15 to open the vertical wall frame portion 11 and the bottom plate frame portion 12 in an upwardly open state, hook the lift arm L on the lift point bar 17B, and set the mold main portion 20 in the inclined posture. Subsequently, the core pin 27 is pulled out, and the extrusion screw 26 is manually turned to push out the Elcon block 1A molded in the molding frame 18 and to remove the mold.

The above-described molding method using the molding apparatus 10 operates as described above, and the vertical wall portion 2 in which the concrete quality is important is a face casting method in a horizontal posture. It is possible to mold into a high-quality concrete free from cracks, and it is easy to attach and detach the temporary cover plate 14 having a lightweight and simple structure, and to form the molding die main part 20 after placing the ready-mixed concrete C.
The posture change and movement can be easily and efficiently performed by the lift arm L. Therefore, the number of persons (one person is possible), the number of steps, and the time required for a series of processes from the setting of the molding apparatus 10 to the demolding are reduced. The required molding productivity of the Elcon block 1 is particularly improved, and low-cost and low-cost production is possible.

Next, another embodiment of the present invention will be described with reference to FIGS. That is, FIG. 4 (see FIG. 6 (B)) shows that “a semicircular hole 6 used as a standing hole such as a guard post or a cement injection hole for reinforcing a juxtaposition posture is formed on the side surface 5 of the vertical wall portion 2.
Also, the side wall 30 of the vertical wall frame portion 11 is provided with the "semicircular hole 6" in the molding frame 18 when molding the "Elcon block 1B provided with the ridges 7 and the concave ridges 8 for fitting the joined side surfaces 5 mutually."・
An uneven portion 31 "for forming the ridges 7 and the concave stripes 8 is provided so that the side plate 30 can be tilted to the side or removed when the Elcon block 1B is removed from the mold. FIG. 4 (A)
When the molding frame 18 is used, the Elcon block 1B can be mass-produced by the molding method of the embodiment.

On the other hand, FIG. 4B shows a temporary cover plate 14 in the case of forming a pattern on the surface of the vertical wall portion 2. A publicly known pattern forming plate 32 which is represented by a pattern is attached. In FIG. 4C, a well-known manual hydraulic jack 33 is attached to the back of the molding frame 18 instead of the above-mentioned pressing screw 26 for releasing. With the hydraulic jack 33, the removal work of the Elcon block 1 is further streamlined.

That is, in the case of the above-mentioned "removable extruding screw 26" structure, the handle is difficult to operate due to the reinforcing ribs or the like of the molded frame 18, and especially when the removal resistance becomes large, the "hammer hammer" is used. The manual hydraulic jack 33 may be used to break the molding frame 18 by "hitting and turning the handle".
Since the operation of the handle 36 is simple and the jacking force is large, such a trouble can be eliminated and the mold can be removed smoothly and efficiently.

FIG. 5 shows the vertical wall frame 1 on the cover plate 22.
1 shows another form of the joint connecting and fixing means, in which the temporary lid plate 14 is in the form of a cap, and the vertical wall frame 11 to which the temporary lid plate 14 is attached is joined to the wide lid plate 22. Then, a separate clamping member 35 is applied to secure by bolting and connect.

The molding apparatus of the present invention is not limited to the above-described embodiment, and the height of the vertical wall portion 2 is set to a small or medium size of 1500 mm or less. If the casting does not cause a shortage of the cement component, the empty molding frame 18 is connected to and fixed to the upright fixing cover plate 21 without first horizontal casting. Is sometimes used.

[0030]

As described above, the molding method and molding apparatus of the present invention provide a high-quality and low-cost Elcon block by enabling high-quality Elcon blocks to be mass-produced based on high productivity. This has the effect of improving the convenience of the field.

[Brief description of the drawings]

FIG. 1 is an explanatory view of one embodiment of a method for forming an L-shaped concrete block for earth retaining according to the present invention.

2A and 2B show an embodiment of a molding device for an earth retaining block of the present invention, wherein FIG. 2A is a perspective view of a main part of the molding die, FIG. 2B is a front view of the main part of the molding die, (C)
Is a perspective view of the standing fixed lid plate.

3 (A) is a side view of the main part of the molding die, FIG. 3 (B) is a side view of a connected state of the main part of the molding die and the stationary fixed lid plate, FIG. (C) is a partial sectional view of (B).

4A and 4B show another embodiment of the molding device for an earth retaining L-shaped concrete block of the present invention, wherein FIG. 4A is a perspective view of a vertical wall frame portion, and FIG. 4B is a temporary cover plate of the vertical wall frame portion. Perspective view, (C) is a side view of the extruding and removing means.

5A and 5B show another embodiment of the molding device for an earth retaining block of the present invention, wherein FIG. 5A is a perspective view of a vertical wall frame portion, and FIG. Sectional view of the state of connection and fixation to the plate

FIG. 6 shows an L-shaped concrete block for retaining a soil,
(A) and (B) are perspective views thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 L-shaped concrete block 2 Vertical wall part 3 Bottom plate part 10 Forming device 11 Vertical wall frame part 12 Bottom plate frame part 14 Temporary cover plate 15 Cover plate 16 Opening / closing part 17A / 17B Lift point bar 18 Mold frame 19 Square frame 20 Mold Main part 21 Standing fixed cover plate 22 Cover plate 23 Vibrator 24 Base C Ready-mixed concrete L Lift arm

Claims (5)

[Claims] 1. An earth retaining concrete block having a vertical wall portion and a bottom plate portion integrally formed in an elliptical shape, comprising: a vertical wall frame portion having a molding cavity of the vertical wall portion; and a molding cabinet of the bottom plate portion. When casting and molding a ready-mixed concrete into a forming frame body in which a bottom plate frame portion having a tee is communicated and integrally formed, the vertical wall frame portion is placed in a horizontal position and ready-mixed concrete is poured from an upper opening to form the upper opening. A temporary cover plate is attached and fixed to the portion, and then the posture of the molded frame is changed to set the vertical wall frame to a vertical posture, and set the bottom plate frame to a posture in which it is upward. The temporary lid plate is surface-bonded to the vertically fixed lid plate body and combined and fixed together, and replenished and filled with ready-mixed concrete from the bottom plate frame portion, and then cured, solidified and released from the mold. Method of forming an L-shaped concrete block for earth retaining. 2. A molding apparatus for molding an earth retaining elbow concrete block in which a vertical wall portion and a bottom plate portion are integrally formed to form an elliptical shape by casting concrete, and forming a molding cavity of the vertical wall portion. A vertical wall frame portion having a removable temporary lid plate at the upper opening portion, and a lid plate having a molding cavity of the bottom plate portion and being detachably mounted at the upper opening portion and capable of being partially opened and closed. A molding frame body in which the bottom plate frame portion is communicated and integrated is mounted on and fixed to the frame, and a molding die main portion configured to be able to select one of the horizontal posture and the vertical posture of the vertical wall frame portion and the `` vertical posture And an upright fixed lid plate body having a fixed lid plate which can be detachably connected and fixed by surface joining the temporary lid plate of the vertical wall frame portion " Molding equipment. 3. A side plate of a vertical wall frame portion is provided with a concave / convex portion for forming a concave / convex portion formed on a side surface of the vertical wall frame portion, and is configured to be detachable and fallable with respect to a bottom plate of the vertical wall frame portion. An apparatus for forming an elbow concrete block for retaining earth according to claim 2. 4. An earth retaining elbow concrete block according to claim 2, wherein a hydraulic jack for extruding and removing the elbow concrete block for earth retaining formed in the molding frame is provided at the back of the molding frame. Molding equipment. 5. The molding die main part is provided with a lift point bar for changing the attitude of the molding die main part.
The molding device for an earth retaining concrete block according to claim 4.