JPH1177641A - Form for molding corner block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a form for molding a corner block simple in structure, easy to adjust a corner angle and not changed in the length of the outer side thereof when the corner angle is altered. SOLUTION: One of two outer side panels 2, 3 connected in a freely bendable manner by an outside hinge 15 is fixed to a surface plate 1 and end panels 4, 5 are pivotally supported on the end parts of the outer side panels 2, 3 by hinges 19, 20 in a vertical direction to be mounted in a freely openable and closable manner. Two inner side panels 7, 8 are connected in a freely bendable manner by an inside hinge 6 and fixed to the end panels 4, 5 provided at constant positions at an angle matched with a desired corner angle α. In the form for the corner block of an L-shaped retaining wall, the block is constituted so as to be molded in an erected state. That is, the end panels 4, 5 have an erected L-shape and include the stay part molding parts of the end panels extending in a horizontal direction long at the lower ends thereof and the inner side panels 7, 8 are clamped to the end panels 4, 5 in the state mounted on the base ends of the stay part molding parts. The advance and retreat mechanisms of face panels 13, 14 can be built in the outer side panels 2, 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork for forming a retaining wall construction block having an L-shaped cross section.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold for forming a block used in a corner portion of a retaining wall, that is, a bent portion, and more particularly to a mold capable of forming blocks having various corner angles.

[0002]

2. Description of the Related Art L-shaped retaining wall blocks are widely used to construct vertical retaining walls having a height of several meters.
The corners or bent parts of the retaining wall were constructed by butting the sides of the straight concrete blocks at an angle to each other, but in such a structure, the strength of the corner parts of the retaining wall was remarkable. descend. Therefore, a structure in which an integral block having a bent shape is formed and a seam does not occur at a corner has been adopted. If the corner angle is constant, it is not particularly difficult to form a bent concrete block.

[0003] However, since the retaining wall is often constructed along the shape of a natural land or the boundary of a pre-partitioned site, the corner angle is not constant. Particularly in Japan, where the land is narrow and land prices are high, it is strongly desired to construct a retaining wall with an accurate shape along the division. Therefore, a formwork that can change the corner angle steplessly with at least a degree of accuracy is required for a formwork for forming a block at the corner portion of the retaining wall.

[0004] Conventionally, in a mold for forming a corner block of an L-shaped retaining wall, there have been proposed some molds capable of changing a corner angle substantially steplessly. In these molds, an inner side plate (side plate for forming the inner surface of a block whose lower edge extends on a lower edge) is provided at a fixed position on a platen (base plate), and the outer side plate is moved on the platen. The structure which adjusts the space | interval of an inner side plate and an outer side plate by making it do is employ | adopted. The reason for adopting such a structure is that the L-shaped block for retaining wall is generally formed upside down at present, and when the corner block is also formed upside down, the upper part of the inner side plate is formed. This is because, when a structure for moving the entirety is used, the work of adjusting the formwork structure and the corner angle becomes complicated.

Referring to FIG. 5, the technical problems of the corner block forming mold will be briefly described. FIG. 5 schematically shows the relationship between the inner side plates 7 and 8 and the outer side plates 2 and 3 on the surface plate 1. In a mold of this type having a conventional structure, one of the inner side plates 7 is usually fixed to the surface plate 1, and the other 8 of the inner side plates can be turned and fixed on the surface hinge 1 around an inner hinge 6 serving as a pivot shaft. To be provided. The inner hinge 6 is fixed to the fixed inner side plate 7, and includes a cylindrical body 25 having a cut back surface and a central shaft 26. Moving inner side plate 8
Is fixed to a bracket 27 pivotally supported by a central shaft 26 through a notch on the back surface of the cylindrical body, and a side on the corner side is in sliding contact with the peripheral surface of the cylindrical body 25. Moving inner side plate 8
Moves to a position corresponding to the determined corner angle α, and is fixed to the surface plate 1 and the cylindrical body 25 of the inner post by bolts and nuts.

[0006] The two outer side plates 2 and 3 are connected to each other by an outer hinge 15 so as to be able to bend and are movably mounted on the surface plate 1. When the corner angle α is changed, the distance between the inner side plate 8 on the moving inner side plate 8 side and the outer side plate 3, that is, the thickness of the block to be formed changes. It is not enough to simply adjust the mutual angles of the outer side plates 2 and 3, and it is necessary to move the entire outer side plates 2 and 3 on the surface plate 1.

[0007]

Another technical problem of the corner block forming form is how to mount and structure the fore-edge plate. When the inner side plate is fixed to the surface plate, it is convenient to adopt a structure in which the fore edge plate is provided at the end of the inner side plate. However, in the retaining wall, the length of the retaining wall is designed based on the outer surface,
In the structure in which the fore-edge plate is attached to the inner side plate, when the corner angle α is changed, the length (left-right width) L of the outer surface of the formed block changes, which is inconvenient. On the other hand, if the edge plate is attached to the outer side plate, when the corner angle is changed, the entire outer side plate moves, so that the edge plate becomes an obstacle to the movement of the outer side plate, and the fastening between the edge plate and the inner side plate becomes difficult. The problem that it becomes difficult arises. Since the mold is manufactured while avoiding such various problems, the work of adjusting the structure of the mold and the corner angle has to be complicated.

The present invention has been made in order to solve the problems of the conventional structure as described above. The structure is simple, the corner angle can be easily adjusted, and when the corner angle is changed, the outside of the block is removed. It is an object of the present invention to obtain a corner block forming form in which the length of the side in the side surface does not change.

[0009]

According to the corner block forming form of the present invention, one of two outer side plates 2, 3 connected to each other by an outer hinge 15 so as to be freely bent is fixed to the base 1, and the outer side plate is provided. A structure is adopted in which small plates 4 and 5 are attached to the ends of the two and three so as to be freely opened and closed. As a mounting structure for the edge plates 4 and 5,
If a structure in which the outer side plates 2 and 3 are pivotally connected to the outer side plates 2 and 3 with vertical hinges 19 and 20 is employed, the opening and closing work of the fore-edge plates 4 and 5 becomes easy. The two inner side plates 7 and 8 are flexibly connected by the inner hinge 6 and fixed to the fore-edge plates 4 and 5 at a fixed position at an angle corresponding to a desired corner angle α.

When the corner block is an L-shaped retaining wall corner block, the form having the above structure is configured to form the block in an upright state. That is, the edge plates 4, 5
Has an erect L-shape, and has, at its lower end, a notch portion forming portion 23 of a small edge plate that extends long in the horizontal direction. The inner side plates 7 and 8 are placed on the base end of the recessed portion forming portion 23 of the fore edge plate, and
Is concluded.

In the mold having the above structure, since the outer side plate is fixed to the surface plate 1, various mechanisms can be built in the outer side plates 2 and 3. Particularly preferred as a built-in mechanism is a mechanism for moving the face plates 13 and 14 of the outer side plate.
This mechanism divides the outer side plates 2 and 3 into outer side plate frames 11 and 12 and outer side plates 13 and 14 and forms the outer side plate frames 11 and 12.
12 is provided by providing guide means 32, 33 for the outer face plates 13, 14 and advance / retreat means 34, 35, 36. The outer side plates 13, 14 can be replaced at least on the forming surface side, and can be used to form a block having a smooth outer surface with a flat face plate, or to form a block with a relief pattern by attaching a decorative face plate. More preferably, it is possible.

The forward and backward means 34, 35, 36 of the outer face plate are
When irregularities are provided on the molding surfaces of the outer side plates 13 and 14, it is effective to remove the block without opening the mutual angle between the outer side plates 13 and 14. If the outer molding surface of the block has irregularities, remove the inner side plates 7 and 8 and
There is a case that the block cannot be removed just by opening 5. If the outer side plates 13 and 14 are provided to be able to advance and retreat, by retreating the outer side plates 13 and 14, no matter what relief pattern is formed on the outer surface of the block, the outer side plate frames 11 and 1 are provided.
The product can be demolded without moving the product 2.

[0013]

1 to 3 show an embodiment of a form for forming an L-shaped retaining wall corner block according to the present invention. This embodiment is an embodiment for all of the first to fourth aspects of the present invention. The formwork of this embodiment includes, as main components, a surface plate 1, two outer side plates 2, 3 on a fixed side and a moving side, two upright L-shaped small plates 4, 5, and an inner hinge 6.
Are formed by two inner side plates 7 and 8 and an end face plate 9 which are connected so as to be able to bend freely. Outer side plates 2 on the fixed side and the movable side,
3 is an outer side plate frame 11, 12 and an outer side plate 13,
The fixed side and the movable side outer side plate frames are connected to each other by an outer hinge 15 so as to be freely bent.

The platen 1 has a flat upper surface, and the lower side of the fixed outer side plate frame 11 is fixed to a fixed position on the upper surface of the platen 1. The outer hinge 15 has a vertical pin 17 axially attached to the tip of a bracket 16 extending from one end of the upper side of the fixed outer side plate frame, and a pin hole (not shown) provided on the surface plate 1 on the same axis as the pin. The outer side frame 12 on the moving side is pivotally connected to the pin 17 (and a lower pin (not shown)). The outer side frame 12 on the moving side is fixed to the surface plate 1 with bolts and nuts while being moved to a desired corner angle. The base 1 is provided with an arc-shaped through groove 18 through which the fixing bolt is inserted.

Edge plates 4 and 5 are pivotally attached to the outer sides of the outer side plate frames 11 and 12 via edge hinges 19 and 20 parallel to the outer hinge 15. At the time of the mold clamping, the fore-edge plates 4 and 5 are fixed at positions perpendicular to the outer side plates 13 and 14. The base plate 1 is formed with a through groove 21 through which a bolt for fixing the small edge plate 5 on the movable outer side plate side to the base plate 1 is inserted. The fore-plate 5 does not need to be fixed in the open state, and is fixed only in the closed state. Therefore, the through-groove 21 for fixing the fore-plate is formed in an arc concentric with the through-groove 18 for fixing the outer side frame 3 on the moving side. Has become.

The fore-edge plates 4 and 5 are erect L-shaped, and a concave arc plate 24 is fixed to a connecting portion between a vertical fore-edge portion 22 and a fore-edge portion 23 extending horizontally from the lower end thereof.

The inner side plates 7 and 8 are provided with molding surfaces which are in close contact with the wall edge 22 of the edge plate and the base end of the edge portion including the concave arc plate 24 from behind. One of the two inner side plates 7 and 8 has a cylindrical body 2 forming an inner hinge 6.
5 is fixed, and a center axis 26 is provided at the center of the cylindrical body. The cylindrical body 25 has an opening cut out on the back side. A bracket 27 is fixed to the other side 7 of the inner side plate, and the bracket 27 is pivotally attached to a central axis 26 through an opening in the back surface of the cylindrical body.
Inner edge 2 of inner side plate 7 on the side provided with bracket 27
8 is formed in a partially cylindrical shape and is in surface contact with the peripheral surface of the cylindrical body 25. The inner side plates 7, 8 are lifted by a crane or the like,
It is mounted on the fore-edge plates 4 and 5 in the closed position, and is fastened to the back side of the fore-edge plates 4 and 5 using a bolt nut and a sea clamp.

A plurality of bolt holes for locking both ends of the end face plate 9 are provided at predetermined positions on the upper surface of the front end of the small end portion 23 of the fore end plate. The length in the left-right direction can be adjusted by mutually sliding iron plates. The end face plate 9 is mounted by fastening and fixing both ends thereof to appropriate bolt holes provided in the fore-edge plate.

On the outer side plate frames 11 and 12, left and right vertical reinforcing plates 31 are mounted, and guide holes 32 are provided at upper and lower positions of the thick reinforcing plates 31, respectively. The pins 33 erected on the back of the guide holes 13 and 14
2 is movably inserted in the axial direction. On the other hand, a toggle operation shaft 34 is mounted adjacent to the thick reinforcing plate 31, and a toggle link is fixed at a position above and below the toggle operation shaft. The tip of the toggle link 35 and the rear surfaces of the outer side plates 13 and 14 are connected by a toggle rod 36. By rotating the toggle operation shaft 34, the sliding crank mechanism formed by the toggle link 35 and the toggle rod 36 moves the outer side plates 13 and 14 forward and backward. When the outer side plates 13 and 14 are decorative face plates, molding is performed in a state where the outer side plates 13 and 14 are advanced, and demolding is performed in a state where the outer side plates 13 and 14 are retracted. When the outer side plates 13 and 14 have a smooth molding surface without a pattern, molding and demolding are performed while the outer side plates 13 and 14 are fixed in the advanced state.

Next, a brief description will be given of a mold assembling operation and a demolding operation with the mold of the illustrated embodiment. The inner side plates 7 and 8 are removed, and the movable outer side plate 3 is rotated around the outer hinge 15 in a state where the movable outer side plate 3 and the fore-edge plates 4 and 5 and the platen 1 are loosened to set a desired corner angle. Set. In this state, the movable outer side plate 3 is fixed to the surface plate 1, and both the edge plates 4, 5 are fixed to the fixed position, that is, a position orthogonal to the outer surface plates 13, 14. In this state, a reinforcing bar buried in the block is arranged, and the inner side plates 7, 8 are lifted by a crane or the like, lowered onto the fore-edge plates 4, 5, and fastened to the back side of the fore-edge plates 4, 5. Further, the end face plate 9 is fastened and fixed to the edge plates 4, 5 and the surface plate. Through-grooves 18 and 21 opening on the upper surface of the surface plate 1 and the like
And bolt holes are closed with a sheet or adhesive tape, and concrete is first driven into the vacant space. Next, concrete is poured into the empty space in the wall. The concrete poured into the wall compresses the concrete poured into the recess, forming a slight bulge on the upper surface, but it can be formed by trowel leveling, and the recess is placed underground at the time of installation. Since it is a portion to be buried, there is no practical problem.
Finally, the tops of the wall portions are leveled along the upper sides of the inner side plates 7 and 8 to complete the driving.

At the time of demolding, the inner side plates 7 and 8 are lifted and removed by a crane or the like, and the two small plates 4 and 5 are connected to the small hinge 1.
If the decorative face plate is used, it is pivoted outward around 9 and 20, and the toggle operation shaft 34 is operated to retract the outer face plates 13 and 14 to lift and remove the molded product. .

The above embodiment is a corner block forming formwork for an L-shaped retaining wall. The formwork of the present invention is particularly suitable for forming an L-shaped retaining wall corner block. Of course, it is also possible to use it as a structure of a mold for molding the corner block.

[0023]

According to the present invention, a corner block forming formwork which has a simple structure, can easily adjust a corner angle, and does not change the length of the side on the outer surface of the block when the corner angle is changed. Can be obtained.

[Brief description of the drawings]

FIG. 1 is an elevation view of a corner block forming formwork.

FIG. 2 is a front view schematically showing an outer side plate.

FIG. 3 is a front view schematically showing a fore edge plate.

FIG. 4 is a sectional view schematically showing the structure of an outer side plate.

FIG. 5 is a schematic view showing a problem of a conventional corner block forming mold.

[Explanation of symbols]

 1 Surface plate 2 Fixed outer side plate 3 Moving outer side plate 4,5 Smaller plate 6 Inner hinge 7,8 Inner side plate 11,12 Outer side plate frame 13,14 Outer side plate 15 Outer hinge 19,20 Smaller hinge 32 Guide hole 33 Pin 34 Toggle Operation axis 35 Toggle link 36 Toggle rod

Claims (4)

[Claims] 1. A surface plate (1), a fixed outer side plate (2) having a lower side fixed to a fixed position of the surface plate (1), and an outer hinge (15) in a direction perpendicular to the surface of the surface plate (1). The movable outer side plate (3) connected to the fixed outer side plate (2) with a small outer plate (4,5) attached to the end of the fixed and movable outer side plate (2,3), and the inner hinge
(6) The two inner side plates (7,
8), and the inner side plate (7, 8) is in the closed state of the fore-edge plate (4,
5) A corner block forming formwork, which is fixed to and formed into a mold. 2. The front plate (4, 5) being pivotally connected to the outer side plate (2, 3) with a front hinge (19, 20) parallel to the outer hinge (15). The mold for forming a corner block according to claim 1. 3. An edge plate (4, 5) having an erect L-shape with a horizontally extending small edge portion (23) at a lower end, and an inner side plate (7, 8).
A corner block molding form characterized by being fixed to a closed edge plate (4, 5) while being placed on the base end of the restraining edge portion (23). 4. The outer side plates (2, 3) are outer side plates (13, 14) for forming an outer surface of a block, and the outer side plate frames (11, 12) are separate from the outer side plates supporting the outer side plates. The outer side plate frames (11, 12) are provided with guide means (32, 33) for guiding the outer side plate (13, 14) movably in the direction perpendicular to the plane, and the outer side plate (13, 13).
The corner block forming mold according to claim 3, further comprising a reciprocating mechanism (34, 35, 36) of (14).