JP4211537B2 - Concrete block manufacturing method and manufacturing jig - Google Patents

Description

  The present invention relates to a method for manufacturing a concrete block and a manufacturing jig, and more particularly to a method for manufacturing a concrete block and a manufacturing jig to be a temporary scaffold at a construction site.

  At the construction site of a nuclear power plant, rails are laid on the floor surface, and heavy objects are slid along the rails. If the floor surface of the construction site is uneven, as shown in FIG. 6, concrete blocks 1, 1,... Are installed at predetermined intervals, and rails 2, 2,. By passing, the rails 2, 2,... Are installed horizontally. Thereby, a heavy article can be conveyed along rail 2,2, ....

A concrete block used at a construction site as described above is manufactured by pouring ready-mixed concrete into a mold at a location different from the construction site (see Patent Document 1).
Japanese Patent Laid-Open No. 6-166012

  However, the conventional concrete block locally gives a large load to the uneven floor surface, which may damage the floor surface. Further, the conventional concrete block has a problem that it takes time to dispose of it after use.

  This invention is made | formed in view of such a situation, and it aims at providing the manufacturing method and manufacturing jig of a concrete block suitable for use at a construction site.

  In order to achieve the above object, the invention according to claim 1 lays a flexible sheet on the floor surface, and a base plate having an opening is separated from the floor surface on the laid sheet. A form that is supported by a hollow position substantially horizontally, and a plate material is erected along the outer edge of the supported base plate so as to surround the base plate, and is formed by the erected plate material and the sheet material A concrete block is manufactured by pouring ready-mixed concrete inside and removing the plate after the ready-mixed concrete is hardened.

  According to the first aspect of the present invention, the concrete block is manufactured by pouring the ready-mixed concrete into a mold formed by standing a plate material on a flexible sheet. It is formed according to the shape of the surface. Therefore, even when the floor surface is uneven, the floor surface is evenly loaded, so that the floor surface can be prevented from being damaged. Furthermore, since the upper surface of the concrete block is always formed horizontally, it is suitable as a scaffold for rails and the like.

  According to the first aspect of the present invention, since the mold is formed by standing the plate around the base plate supported on the sheet, the mold can be formed easily and at low cost. Can do. Further, since the opening is formed in the base plate, the ready-mixed concrete can be filled below the base plate by pouring ready-mixed concrete into the mold from above. Thereby, a concrete block can be reliably formed in the shape of a formwork.

  According to the invention described in claim 1, since the concrete block is manufactured on the sheet, the concrete block does not stick to the floor surface, and the concrete block can be easily lifted. Furthermore, according to the invention of claim 1, since the base plate is embedded in the concrete block, the concrete block is divided at the base plate as a boundary only by dropping the raised concrete block and giving an impact. Therefore, the used concrete block can be easily processed.

  In order to achieve the above object, the invention according to claim 2 is a manufacturing jig used when a concrete block is manufactured by forming a mold frame from standing plates and pouring ready-mixed concrete into the mold frame. A base plate having an opening, a plurality of support members that support the base plate substantially horizontally and that can adjust the height of the support position of the base plate, and are attached to the support member, An abutting member against which the plate material abuts, wherein the plate material stands up against the edge of the base plate and the abutting member.

  The production jig according to claim 2 is a jig suitable for the method for producing a concrete block according to claim 1. According to the invention described in claim 2, since the base plate is supported by the plurality of support members and the height of the support position can be adjusted, the base plate can be mounted even on an uneven floor surface. It can be supported in a hollow position away from the floor surface and substantially horizontally. According to the manufacturing jig of the second aspect, since the contact member with which the plate material abuts is provided, the plate material can be erected along the edge of the base plate. Therefore, according to the manufacturing jig of claim 2, the mold can be easily formed.

  Further, according to the manufacturing jig of claim 2, since the opening is formed in the base plate, when the ready-mixed concrete is poured from above the mold, the ready-made concrete is reliably filled below the base plate. .

  Furthermore, the manufacturing jig of claim 2 has a simple structure including a base plate, a support member, and a contact member, and is low in cost. Therefore, a concrete block can be manufactured at low cost.

  According to the method for producing a concrete block according to the present invention, a plate material is erected on a flexible sheet material to form a formwork. Therefore, the concrete block is formed according to the shape of the floor surface. It is possible to prevent the floor from being damaged due to local load on the surface. Moreover, since the formwork is formed on the sheet material and the ready-mixed concrete is poured, there is no possibility that the concrete block sticks to the floor surface, and the used concrete block can be easily lifted. Further, since the base plate is embedded in the concrete block, the used concrete block can be easily separated by being divided by the base plate only by giving an impact by dropping.

  According to the concrete block manufacturing jig according to the present invention, the base plate can be supported substantially horizontally in a hollow position away from the floor surface, and the plate material can be erected on the base plate along the edge. The mold can be easily formed. Furthermore, since the opening is formed in the base plate, the concrete can be reliably filled with the ready-mixed concrete. Therefore, a concrete block can be easily manufactured by using the manufacturing jig according to the present invention.

  A preferred embodiment of a concrete block manufacturing method and a manufacturing jig according to the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing a manufacturing jig according to the present invention.

  As shown in the figure, the manufacturing jig 10 is mainly composed of a base plate 12, bolts (corresponding to support members) 14, 14,..., Pieces (corresponding to contact members) 16, 16,. For example, it is formed in a rectangular shape by an iron plate. The vertical and horizontal sizes of the base plate 12 are formed to be the same as the vertical and horizontal sizes of the concrete block 30 (see FIG. 5) to be manufactured. The base plate 12 is formed with four circular openings 18, 18. The opening 18 has a sufficient opening area for allowing ready-mixed concrete, which will be described later, to flow from the upper side to the lower side through the opening 18, and has a size sufficient to ensure the strength of the base plate 12. The

  FIG. 1 shows four openings 18 formed in a circular shape, but the shape and number of the openings 18 are not limited to this. What is necessary is just to be formed so that the intensity | strength of the board 12 may fully be ensured. Therefore, the number of the openings 18 may be three or less, or five or more, and the shape of the openings 18 may be oval or rectangular. Further, the opening 18 may be connected to the edge of the base plate 12. Here, the sufficient strength of the base plate 12 is sufficient if it is strong enough to be lifted using the handle 20 without collapsing the concrete block 30 after manufacture shown in FIG. The handle 20 is attached to one of the edges of the base plate 12 of FIG.

  At each corner portion of the base plate 12, arc-shaped projecting portions 22, 22. A screw hole (not shown) is formed in the central portion of each protrusion 22 so as to penetrate in the vertical direction, and a height adjusting bolt 14 is screwed into the screw hole from above to below. . That is, the bolt 14 is screwed into the screw hole with the head portion 14A facing upward. Hereinafter, a portion of the bolt 14 below the base plate 12 is referred to as a screwed portion 14B.

  The bolt 14 can adjust the height of the support position for supporting the base plate 12 by adjusting the length of the threaded portion 14B. Therefore, the height and inclination of the base plate 12 can be adjusted by adjusting the length of the threaded portion 14B of each bolt 14. The base plate 12 is installed such that its inclination is substantially horizontal. Further, the height of the base plate 12 is adjusted to be near the center of the concrete block 30 (see FIG. 5).

  The top 16 is screwed into the threaded portion 14B of each bolt 14 and can be adjusted in height by rotating with respect to the bolt 14. Further, the top 16 is formed with the same diameter as the protrusion 22 described above, and the plate 26 is erected vertically by bringing a plate 26 (see FIG. 2) described later into contact with the protrusion 22 and the top 16. It has come to be.

  Next, a method of manufacturing the concrete block 30 using the manufacturing jig 10 configured as described above will be described with reference to FIGS.

  First, the sheet 24 is laid on the floor surface where the concrete block 30 is installed. As the sheet 24, a sheet that is sufficiently bent along the unevenness of the floor surface 32 as shown in FIG. 4, for example, a sheet made of vinyl chloride is used. Further, the sheet material 24 having a sufficiently larger size than the lower surface of the concrete block 30 is used.

  Next, the manufacturing jig 10 described above is installed on the sheet 24. And the inclination of the base board 12 is adjusted by adjusting the length of the screwing part 14B of each bolt 14, and the base board 12 is supported substantially horizontally. At that time, the height position of the base plate 12 is adjusted by adjusting the length of the threaded portion 14B of each bolt 14 so that the base plate 12 is arranged near the center of the concrete block 30 to be manufactured. It is preferable. Further, it is preferable to adjust the height position of the top 16 and arrange the top 16 at a position sufficiently away from the base plate 12, so that the plate material 26 can be stabilized when a plate material 26 described later is erected. Can be made. Furthermore, oil or the like may be applied to the entire surface of the base plate 12 in order to improve the peelability between the base plate 12 and the concrete when the manufactured concrete block 30 is disassembled.

  Next, plate members 26, 26... Are erected around the base plate 12. The plate member 26 is formed in a rectangular shape by thin wood such as veneer. In addition, a long hole 26 </ b> A is formed in one of the plate members 26 according to the position and shape of the handle 20 so that the handle 20 penetrates the long hole 26. The plate members 26, 26... Are arranged vertically by contacting the protrusions 22 and the top 16. At that time, the plate members 26, 26... Have their lower ends in contact with the sheet 24 and have their left and right edges contact with the edges of the adjacent plate members 26. 3 are erected along the edge of the base plate 12 and surrounding the base plate 12 as shown in FIG.

  After the plate members 26, 26... Are erected, the plate members 26, 26... Are fixed by winding the belt 28 around the plate members 26, 26. Thereby, a formwork is formed by the sheet | seat 24 and board | plate material 26,26 .... Note that the fixing method of the plate members 26, 26 is not limited to the belt 28, and the plate members 26, 26 may be attached to each other with a peelable tape, for example.

  Next, the ready-mixed concrete is poured into a mold made up of the plate materials 26, 26. At this time, since the opening 18 is formed in the base plate 12, when the ready-mixed concrete is poured into the mold from above, the ready-mixed concrete also flows into the lower portion of the base plate 12 through the opening 18. The whole is filled with ready-mixed concrete. After fully pouring the ready-mixed concrete, the ready-mixed concrete can be more reliably filled into the mold by hitting the upper surface of the ready-mixed concrete or the plate material 26.

  After the ready concrete is sufficiently hardened, the belt 28 is removed, and the plate material 26 is peeled off. Thereby, the concrete block 30 as shown in FIG. 5 is formed.

  As shown in FIG. 4, the concrete block 30 formed in this way is formed according to the unevenness of the floor surface 32. Therefore, a load is evenly applied to the floor surface 32 below the concrete block 30. Thereby, it can prevent that a local load is applied to the floor surface 32, and can prevent the floor surface 32 from being damaged.

  Moreover, the concrete block 30 is always formed so that the upper surface thereof is substantially horizontal regardless of the unevenness of the floor surface 32. Therefore, the concrete block 30 after manufacture is suitable as a scaffold for the rail 2 shown in FIG.

  When processing the used concrete block 30, first, the concrete block 30 is lifted by a crane or the like. At that time, the concrete block 30 is formed on the sheet 24 and is not bonded to the floor surface 32, so that it can be easily lifted. Moreover, since the handle 20 is provided in the concrete block 30, by using the handle 20, the concrete block 30 can be easily lifted and conveyed.

  The concrete block 30 lifted and transported can be easily crushed by dropping it from a predetermined height. That is, since the concrete block 30 has a structure in which the block piece on the upper side of the base plate 12 and the block piece on the lower side of the base plate 12 are connected at the position of the opening 18, The two block pieces are divided at the position of the opening 18 having a low strength, and are divided into at least two block pieces. Therefore, since the block piece which became small should just be crushed with a rock drill etc., the processing operation of the used concrete block 30 can be performed easily. Further, since the concrete block 30 is divided into two block pieces with the base plate 12 as a boundary, the manufacturing jig 10 can be taken out without being damaged, and the manufacturing jig 10 can be reused.

  In the above-described embodiment, the rectangular base plate 12 is used. However, the present invention is not limited to this. For example, a polygonal columnar concrete block can be formed by using a polygonal base plate such as a hexagon or an octagon. Moreover, a cylindrical concrete block can also be formed by using a circular base board.

  Further, the configuration of the manufacturing jig 10 is not limited to the above-described embodiment. The manufacturing jig used in the manufacturing method according to the present invention includes a base plate supporting function for supporting a base plate having an opening portion substantially horizontally at a hollow position away from the floor surface, and a base plate along an edge of the base plate. It is preferable to have a guide function for standing the plate material so as to surround the plate.

The perspective view which shows the manufacturing jig of the concrete block which concerns on this invention Assembly drawing showing a method of forming a mold using the manufacturing jig of FIG. 1 is a perspective view of a formwork using the manufacturing jig of FIG. Partial sectional view of the formwork shown in FIG. Perspective view showing manufactured concrete block Perspective view showing an example of using concrete blocks

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Manufacturing jig, 12 ... Base board, 14 ... Bolt, 16 ... Top, 18 ... Opening part, 20 ... Handle, 22 ... Projection part, 24 ... Sheet, 26 ... Plate material, 28 ... Belt, 30 ... Concrete block, 32 …Floor

Claims (2)

Laying a flexible sheet on the floor,
On the laid sheet, a base plate having an opening is supported substantially horizontally in a hollow position away from the floor surface,
A plate material is erected along the outer edge of the supported base plate so as to surround the base plate,
Pour the ready-mixed concrete into the form formed by the standing plate material and the sheet material,
A method for producing a concrete block, characterized in that a concrete block is produced by removing the plate after the ready-mixed concrete has hardened. A manufacturing jig used for manufacturing a concrete block by forming a mold with standing plate materials and pouring ready-mixed concrete into the mold,
A base plate having an opening;
A plurality of support members that support the base plate substantially horizontally and can adjust the height of the support position of the base plate;
An abutting member attached to the support member and against which the plate material abuts;
A jig for manufacturing a concrete block, wherein the plate member is erected in contact with an edge of the base plate and the contact member.

Images