JP2726983B2 - Formwork for manufacturing hollow concrete block mat and method for forming hollow section - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a form for manufacturing a block mat used when adopting a greening method for slope protection, and more particularly, to integrally form a large number of hollow concrete blocks on a filter sheet. The present invention relates to a mold for manufacturing a hollow concrete block mat and a method of forming a hollow portion in which one block mat can be factory-produced or can be constructed on site for each shot from mold placement and concrete injection to demolding.

[0002]

2. Description of the Related Art Conventionally, in slope protection works such as cuts and embankments for revetment of coasts and rivers or land development, it has required man-hours and specialized work to attach concrete blocks (including mortar blocks). .

[0003] There are many methods (slope stabilization method) for protecting such slopes. In recent years, there has been a high demand for adopting a method that also combines a greening method with vegetation and structures.

[0004] One of them is a so-called block mat method, in which a large number of concrete blocks are bonded or integrally formed on a filter sheet such as a woven fabric or a non-woven fabric, and the block mat is continuously laid on a slope.

[0005] To fix the block mat to the ground, first, a reinforcing bar is driven in between the blocks, and after a lapse of time, plants are vegetated in the gaps between the blocks, and the blocks are rooted through the filter sheet to strengthen the fixing. It is intended.

Various proposals have been made with respect to the production of block mats for this purpose. For example, Japanese Patent Publication No. 1-52179 discloses a "method of producing a block mat for preventing surface erosion". Here, a mold for simultaneous molding of many concrete blocks is placed on a fiber sheet, concrete or mortar slurry is poured into the block, and the formed block is hardened to simultaneously integrate the sheet and the block. I try to mold.

[0007] An advantage of the implementation of this known production method is that since the main equipment of the production equipment is a mold, the block mat for preventing surface erosion can be produced relatively easily and efficiently in large quantities. The above uses are also very popular.

[0008]

However, the block mat products manufactured by the above-mentioned known manufacturing method have a problem that they are easily damaged by wind and rain until the vegetation in the greening method takes effect. (This problem is solved by the molding of the hollow concrete block of the present invention.)

In many cases, lifting by heavy equipment is required for construction (laying) and transportation, but no effort has been made in terms of handling such as lifting with uniform load. Therefore, the strength of the fiber sheet material cannot be reduced, and at present, the cost of the block mat depends on the cost of the fiber sheet material, so that it has been difficult to reduce the cost. (This problem is solved by the improvement of the mold of the present invention.)

[0010] Under these circumstances, hollow concrete block mats are expected from the viewpoint of a greening method that is excellent in preserving the environment and scenery, and an economical method that is highly efficient in construction. ing.

[0011] The present invention has been made in view of such circumstances, and for a mold that can partially utilize the above-described known manufacturing method, a hollow concrete block is integrally molded to reliably and positively promote greening. An object of the present invention is to provide a form for forming a hollow concrete block mat and a method for forming a hollow portion, which contribute to protection work and can improve construction efficiency and reduce manufacturing cost.

[0012]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is used when adopting a greening method for slope protection , and has water permeability, flexibility and impermeability to earth and sand particles. Fiber
Simultaneous molding of many concrete blocks on fiber sheet
Concrete form or mortar slurry
Mold the block by injecting
Form the sheet and block integrally by curing
For producing block mats for preventing surface erosion
In the improvement of the number of blocks on the filter sheet
Shaped portion separable from the mold body and the mold frame body was Katachi設the
The core for forming a hollow part is combined and placed in a mold.
A mold for manufacturing a hollow concrete block mat that allows one block mat to be factory-produced or to be constructed on site for each shot from concrete injection to demolding, which is placed on a filter sheet As an element
Te, constituting the mold body for hollow concrete block molding
By connecting a plurality of mold units and the template unit <br/> to ensure the desired mat area and mats Gaigaikei to and temporarily fixed frame to allow demolded, after the mold unit connecting comprising a core for a hollow portion formed of individual blocks shaped portion of the mold body Ru disposed in combination with each other, a large number of hollow concrete demolding after filter sheet
A continuous block pattern consisting of two blocks.

Here, the core has a movable claw for forming a hook engaging portion of the molded block, and the movable claw is outward from the core body peripheral portion when the core is installed and concrete is poured. The core is opened to assume a fixed shape, and is closed in the core main body at the time of demolding so as to separate from the hardened concrete block.

In order to fix the core on the block core, a concave portion is provided at the center of the bottom surface of the core body, and the concave portion is provided at a position corresponding to each block core of the bottom plate on which the filter sheet is mounted. It is something to do.

On the other hand, after a mold for simultaneous molding of many concrete blocks is placed on a fiber sheet having water permeability and flexibility and impermeable to earth and sand particles, a slurry of concrete or mortar is poured. molding the block, in improving the production process of surface erosion prevention block mat so as to integrally mold the sheet and the block by curing the shaped blocks, the demolding step and the mold installation process according to the manufacturing method The hollow concrete block
A method of forming a hollow portion of a hollow concrete block mat in which a continuous block pattern composed of a large number of hollow concrete blocks is formed on a filter sheet for each shot of concrete injection by changing using a mold for manufacturing a mat. Several molds on the filter sheet
Connect the unit and fix the frame body
A core that can be separated from the mold body at a position corresponding to a block core for each block forming portion of the mold body.
It was placed in each separate, in the core provided movable claw for forming the hook engaging portion of the concrete blocks <br/> click after molding, core body a movable claw at the time the core installation and concrete injection Opening outward from the peripheral part to fix the shape, at the time of demolding, the movable claws are closed in the core body, the core is released from the hardened concrete block in advance, and then the mold body is released.
By de is characterized in that the Ru pulled in two steps.

[0016]

[Function] A large number of mold bodies, each of which is connected to a plurality of mold units, and a core prepared for each block forming portion are combined, and a central portion of each block is cast on the filter sheet during molding to be integrated with the filter sheet. Hollow concrete blocks can be formed.

At this time, since the core fixed at the position corresponding to the block core has a movable claw, the movable claw is opened outward from the core main body peripheral portion when the core is set and concrete is poured, thereby forming a fixed shape. When it is released from the mold, it closes inside the core body and separates from the hardened concrete block.

As a result, a hook hooking portion is formed in the hardened hollow concrete block, and during construction or transportation, it becomes easy to lift the load uniformly using the entire surface of the block mat product by a heavy machine.

Also, seeds, soil and fertilizer can be put into a hollow concrete block in the shape of a flower pot at the time of construction, and active greening can be achieved by water supply, rainfall, etc., so that the soil surface protection function is exhibited immediately after construction. A landscape pattern is achieved by the continuous block.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a plan view and a schematic cross-sectional view (XX cross section) illustrating a basic shape and an arrangement pattern of a mold body.
It is. Here, 1 is a mold body, 1a is a mold unit A,
1b is a mold unit B, 2 is a fixed frame, 3 is a core (main body), 8 is a bottom plate and O is a block core.

As shown in FIG. 1, a plurality of mold units A (1a) serving as a mold body for forming a hollow concrete block are connected in a fixed frame, and a mold unit B (end) is connected to one end (end) in the connection direction. Combine 1b) to complete the connection and secure the desired mat area and mat outline. The mold unit B (1b) for the end is a mold unit A (1a)
Is cut in half. In addition, the semicircle solid line part which appeared on both ends in the figure shows a cover plate.

FIG. 2 is a sectional view and a bottom view (Y-Y) of the core.
Cross section). Here, 3 is a core (main body), 4 is a movable claw and 5 is a concave portion, 6 is a block (part), 7 is a filter sheet, 8 is a bottom plate, and 9 is a convex portion.

FIG. 3 is an explanatory plan view showing details of the block arrangement of the hollow concrete block mat (product). Here, 10 is a hollow concrete block, 11 is a hollow portion, and 12 is a hook hooking portion.

FIGS. 4A and 4B are schematic cross-sectional views for explaining the operation of the movable claw of the core. FIG. 4A shows the state at the time of installation, FIG.

As shown in FIG. 1, a mold unit A (1) serving as a mold body (1) for forming a hollow concrete block is provided.
a) are connected in the fixed frame (2), and the connection is completed by combining the mold unit B (1b) at one end (end) in the connection direction to secure a desired mat area and mat outline. The mold unit B (1b) for the end is obtained by cutting the mold unit A (1a) in half.

As shown in FIGS. 2 and 4, the core (3) fixed at a position corresponding to the block core (O) is used to form the hook hooking portion (12) in the molded block (6). Movable claws (4). The movable claw (4) is opened outward from the periphery of the core body (3) when the core is installed and concrete is poured, and has a fixed shape. When the mold is removed, the movable claw is closed and hardened in the core body (3). From the block (6).

In order to fix the core (3) on the block core (O), a recess (5) is provided at the center of the bottom surface of the core body (3), and a bottom plate on which the filter sheet (7) is placed. The projections (9) provided at positions corresponding to the respective block cores (O) in (8) are engaged with each other. (Fig. 2)

FIG. 3 shows the details of the block arrangement of the hollow concrete block mat (product). As shown in FIG.
Is achieved. Each block (10 1
The area between 0) is a rainwater flow path, and the flower-pot-shaped hollow portion (11) is a place where vegetation can take root, where seeds, soil, fertilizer, and the like are put during construction.

With respect to the production of hollow concrete block mats using the above-mentioned formwork, a known "method for producing block mats for preventing surface erosion" (Japanese Patent Publication No. 1-52179).
However, in order to newly introduce the incorporation of the core for forming the hollow portion, the mold setting step and the demolding step are changed.

The hollow portion forming method in the improved hollow concrete block mat is such that a plurality of hollow concrete blocks are formed on a filter sheet for each shot of concrete injection by combining a mold body with a core. Things.

That is, when the mold is installed, the block core (O)
Place the core (3) at the position corresponding to
The hook hook (12) in the molded block (6)
A movable claw (4) for forming is provided,
At the time of concrete injection, move the movable claw (4) around the core body (3).
Open outward from the part to fix the shape, and when removing the mold, the movable claw
Block (4) closed inside the core body (3) and cured
(6), and the solid containing the formwork body (1)
Release the fixed frame (2), pull up in two steps
It is characterized by being removed from the mold. (FIG. 4)

Here, a supplementary explanation of the two-stage lifting mechanism in the above-mentioned demolding process will be given. The product can be easily demolded by forming a draft in the mold body, but in the present invention, the movable claw is attached to the core. Since the core is provided, the core is first pulled up while the product is being held down by the mold body, and after the core is removed from the product, the mold body is pulled up. The demolding device having this two-stage lifting mechanism has been separately developed as a form lifting jig (not shown), and the raised form (as it has already been assembled including the core) has been newly added as it is. It is set on the bottom plate and used for the next shot. Therefore, mass production and cost reduction are possible.

In this way, a formwork for manufacturing a hollow concrete block mat can be provided in which greening vegetation contributes to reliable and active protection work, thereby improving construction efficiency and reducing manufacturing costs. In, the block pattern (shape, arrangement, etc.) can be freely modified according to the use destination.

[0034]

According to the present invention, the present invention has the above-mentioned structure. According to the present invention, a mold body in which a plurality of mold units are connected and a core are combined, and each central portion of a large number of blocks is cast on a filter sheet. Since a large number of hollow concrete blocks integrated with the filter sheet are formed by pulling out, one block mat can be easily and efficiently mass-produced by one shot, and can be manufactured in a factory or constructed on site.

As a result, a hook retaining portion is formed in each of the hardened concrete blocks, so that the concrete block can be used during construction or transportation.
It is easy to lift the load evenly using the entire surface of the block mat product by heavy equipment, so it can be directly laid on the embankment and gentle cut slope, fixed and laid continuously, providing an economical construction method with high construction efficiency can do.

In addition, a hollow concrete block mat product using the formwork of the present invention is provided with a method in which seeds, soil, and fertilizer are put into a pot-shaped hollow concrete block at the time of construction, and water supply,
Active greening due to rainfall or the like can be achieved, so that the soil surface protection function is immediately exhibited by the construction, and a landscape pattern is achieved by the continuous blocks. This can be expected to contribute as an integrated greening method that enables greening in a natural scenery while being a block covering work.

[Brief description of the drawings]

FIG. 1 is a plan view and a schematic cross-sectional view (XX cross section) illustrating a basic shape and an arrangement pattern of a mold main body according to an embodiment of the present invention.

FIG. 2 is a sectional view and a bottom view of the same core (Y-Y section).
It is.

FIG. 3 is an explanatory plan view showing details of a block arrangement of a hollow concrete block mat (product) manufactured by the formwork of the present invention.

FIGS. 4A and 4B are schematic cross-sectional views illustrating the operation of a movable claw of a core according to the method of forming a mold and a hollow portion according to the present invention, wherein FIG. ) Indicates when the demolding is completed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Form body 1a Mold unit A 1b Mold unit B 2 Fixed frame 3 Core (body) 4 Movable claw 5 Concave 6 Block (part) 7 Filter sheet 8 Bottom plate 9 Convex part 10 Hollow concrete block (product) 11 Hollow part 12 Hook hook O block core

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location E02D 17/20 103 E02D 17/20 103H

Claims (4)

(57) [Claims] 1. Used when adopting a greening method for protection of slopes, it has water permeability and flexibility, and is impermeable to earth and sand particles.
Simultaneous formation of many concrete blocks on fiber sheet
After placing the formwork, concrete or mortar
Inject a rally to form a block, and the formed block
The sheet and block are integrally molded by curing
For producing surface mats for preventing surface erosion
In order to improve the frame , many blocks were formed on the filter sheet
For forming a mold body and a hollow portion that can be separated from the mold body.
Combine the cores and place them in a mold.
A mold for manufacturing a hollow concrete block mat that allows one block mat to be factory-produced or to be constructed on site for each shot before it is removed from the mold, and is used as a mold element that is placed on a filter sheet. , A plurality of formwork bodies for hollow concrete block modeling
Of connecting the mold unit and the template unit ensuring a desired mat area and mats Gaigaikei and temporarily fixed frame to allow demolded, individual formwork body after the mold unit connecting For each block molding part
Comprising a core for a hollow portion formed that will be installed in combination, multiple hollow Konkuritobu demolding after filter sheet
A formwork for manufacturing a hollow concrete block mat, wherein a continuous block pattern made of a lock is formed. 2. The core has a movable claw for forming a hook engaging portion in the block after molding, and the movable claw is opened outward from a peripheral portion of the core body when the core is installed and concrete is poured. 2. The mold for manufacturing a hollow concrete block mat according to claim 1, wherein the mold has a fixed shape, and is detached from the hardened block by being closed in the core body when the mold is removed. 3. In order to fix the core on the block core, a concave portion is provided at the center position of the bottom surface of the core body, and engages with a convex portion provided at a position corresponding to each block core of the bottom plate on which the filter sheet is mounted. The mold for manufacturing a hollow concrete block mat according to claim 1 or 2, wherein: 4. A concrete or mortar slurry is poured after placing a mold for simultaneous molding of a large number of concrete blocks on a fiber sheet having water permeability and flexibility and impermeable to earth and sand particles. molding the block, in improving the production process of surface erosion prevention block mat so as to integrally mold the sheet and the block by curing the shaped blocks, the demolding step and the mold installation process according to the manufacturing method , Claims
The hollow concrete block according to any one of claims 1 to 3,
A method of forming a hollow portion of a hollow concrete block mat in which a continuous block pattern composed of a large number of hollow concrete blocks is formed on a filter sheet for each shot of concrete injection by changing using a mold for manufacturing a mat. To connect multiple mold units on the filter sheet,
First, the mold body fixed to the frame is installed, and the
At the position corresponding to the block core for each block molding part
The mold frame body to position the separable cores to each other, in the core provided movable claw for forming the hook engaging portion of the concrete block after molding, at the time of core installation and concrete injection The movable claw is opened outward from the core body periphery to fix the shape, and when the mold is removed, the movable claw is closed in the core body and the core is separated from the hardened concrete block in advance.
Is de, followed by mold forming method of the hollow portion of hollow concrete block mats body is detached, characterized in that Ru pulling on <br/> up to two steps.