JPH0718239B2 - Block for leveling concrete - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a leveling method to be used when a concrete is poured onto a formwork to obtain a reinforced concrete disk-like body in order to build a roof or floor of a building. For blocks.

[Conventional technology]

Conventionally, as a leveling block as described above, as shown in Japanese Patent Laid-Open No. 61-98867, it is formed in a shape in which the horizontal cross-sectional area of the upper and lower portions is smaller than the horizontal cross-sectional area of the vertical middle portion. However, there is one in which the intermediate portion is formed to have a height equivalent to the thickness of the concrete to be cast, and to have a size that fits into the mutual spacing of the parallel reinforcing bars of the reinforcing bar assembly.

The leveling block is installed in a suitable place on the concrete formwork, with the middle part fitted between the parallel reinforcing bars of the reinforcing bar assembly to install a large number of pieces, and the concrete is poured onto the formwork, Embedded with rebar assembly,
It is used as a mark for the thickness of poured concrete and is used to easily equalize the thickness of each part of concrete.

[Problems to be Solved by the Invention]

Since the conventional concrete leveling block configured as described above is an integrally molded product of concrete, it is heavy and difficult to handle, and in addition,
The problem is that the degree of freedom for horizontal and upper and lower reinforcements is small, and the height of the concrete must be different depending on the thickness of the concrete to be placed on the concrete formwork, resulting in poor productivity. There was a point.

The present invention solves the above-mentioned problems to reduce the weight,
Workability such as transportation and mounting is improved, and workability at the time of mounting is improved by dividing into multiple members,
Also, the degree of freedom for the reinforcing bar assembly can be increased,
Another object of the present invention is to provide a concrete leveling block which can be surely embedded and fixed in the concrete to be placed according to the thickness thereof with high productivity.

[Means for Solving the Problems]

The concrete leveling block according to the present invention is
With a lower rebar holding part for holding a lower rebar embedded in concrete to be cast on a concrete formwork, a lower stand fixed on the concrete formwork, and an upper rebar holding part for holding an upper rebar embedded in the concrete, And a block main body integrally formed with a plurality of leg portions projecting downward of the holding portion, and a height adjusting member in which a joint leg for fixing between the lower base and the leg portion of the block main body is connected by a connecting rod. The lower stand, the block body, and the height adjusting member are each formed of a synthetic resin molded product.

[Action]

The leveling block of the present invention has a lower base, a height adjusting member, and a block body, and after constructing a concrete formwork, a lower base which holds a lower rebar in a lower rebar holding portion at an appropriate position on this formwork. Are fixed by nailing, adhering, etc., and then a reinforcing bar assembly is provided by vertically and horizontally and above and below the formwork, and further, the block main body is mounted on the lower table via a height adjusting member. Fix it to hold the upper rebar in these holding parts, or fix the block main body holding the upper rebar on the lower stand via the height adjusting member, and in this state concrete on the formwork top surface of the main body By pouring to a height almost the same as the above, the thickness of the concrete can be easily made uniform in each part with the upper surface of the main body as a mark. Further, in the present invention, since the lower table, the height adjusting member, and the block body are made of a synthetic resin molded product, the weight is lighter than that of the conventional concrete leveling block, and the lower table is placed on the formwork. After fixing, by fixing the main body via the height adjusting member on the lower table, even if there is a slight error in the position of the reinforcing bar assembly bar arrangement, bending the legs of the main body,
When the number of legs is large, the main body, some of the legs of the height adjustment member, and the joint leg can be cut off to easily fix the main body on the lower table via the height adjustment member. The workability at the time of assembling is good, and the degree of freedom with respect to the reinforcement is large.
And since the lower table is fixed to the formwork when pouring concrete, it does not move unintentionally, and since the lower table, the lower and upper reinforcing bars held by the main body are embedded in the concrete, The lower stand and main body will not come off when the concrete form is removed after solidification of concrete. Moreover, the lower table, the lower part held by the main body,
The upper reinforcing bars can be used for attaching members such as roof boards and ceilings. Especially, since the height adjusting member is interposed between the lower table and the main body, the total height of the leveling block can be easily changed by changing the number of height adjusting members and the length of the joint leg. It is possible, and can easily cope with the case where the thickness of the concrete cast on the formwork is different.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

1 to 5, (1) is a lower table, (2) is a block body, (3) is a height adjusting member, and (4) is a lid, which are made of synthetic resin such as polypropylene or polyethylene. It is composed of an integrally molded product.

As shown in FIG. 1 to FIG. 3 and FIG. 5 to FIG. 8, the lower base (1) is formed with a lower rebar holding portion (5) in a substantially inverted box shape at the center thereof. ) Long side wall (5
a) A pair of notches (5b) opening in the lower surface are formed facing each other in the central portion. From the side wall of the lower reinforcing bar holding part (5) to the outer peripheral side, six supporting parts (6) centering on the center of the lower reinforcing bar holding part (5) are radially projected at equal angular intervals, and the supporting part (6) Fitting portions (7) are respectively provided at the tips of the. The fitting portions (7) are connected in threes by the connecting portion (8) in an arc shape centered on the center of the lower reinforcing bar holding portion (5),
The connecting portion (8) is divided into two parts by a space arranged at a position corresponding to the cutout (5b). The fitting portion (7) is formed with a fitting convex portion (7b) protruding upward through the step (7a).

As shown in FIGS. 1 to 4 and FIGS. 9 to 11, the block main body (2) is provided with an upper rebar holding portion (9) formed in a substantially box-like shape at the center thereof. A short side wall (9a) of 9) has a pair of cutouts (9b) opening in the upper surface facing each other in the central portion. A connecting portion (11) is provided on the outer peripheral side of the side wall of the upper reinforcing bar holding portion (9) in a circular arc shape centered on the center of the upper reinforcing bar holding portion (9) via a supporting portion (10).
The connecting portion (11) is divided into two parts by an interval arranged at a position corresponding to the notch (9b), and has an outer diameter equal to that of the connecting portion (8) of the lower table (1). There is. Six legs (12) extending from the connecting portion (11) of the main body (2) to the fitting portion (7) of the lower base (1) at equal intervals in the circumferential direction are equal in length to each other. Is projected. Legs (12) that come into contact with the step (7a) of the fitting part (7)
A fitting recess (12b) is formed upward from the lower end (12a) of the.

The height adjusting member (3) is shown in FIGS. 1 to 3 and 12
As shown in the figure, on the outer peripheral side of the inner ring (13), six thin connecting rods (14) are radially projected at equal angular intervals with the center of the inner ring (13) as the center, and the connecting rods ( 14)
Joint legs (15) extending in the vertical direction are respectively provided at the tip ends of the. The joint leg (15) is arranged at a position facing the leg portion (12) of the block body (2) and the fitting portion (7) of the lower stand (1), and has a fitting recess of the leg portion (12) at the lower end. (12
A mating recess (15c) similar to b) is formed, and a step (15c) is
A fitting protrusion (15b) similar to the fitting protrusion (7a) of the lower table (1) is formed via the a). Then, the fitting convex portion (7a) of the lower base (1) and the fitting concave portion (15c) of the joint leg (15) are fitted to each other, and the fitting convex portion (15b) of the joint leg (15) and the block body ( It is configured such that the main body (2) is fixed on the lower table (1) through the height adjusting member (3) by being fitted into the fitting concave portion (12b) of 2).

As shown in FIGS. 1 to 4, the lid body (4) is provided with an upper reinforcing bar on the lower surface of a flat rectangular cover plate (4a) covering the upper opening of the upper reinforcing bar holding section (9) of the main body (2). A fitting frame (4a) that fits on the inner circumference of the side wall of the holding portion (9) is formed. The lid body (4) is destroyed by hitting it from above with it attached to the upper reinforcing bar holding portion (9).

Figures 13a and 13b show the lower rebar. In the lower rebar (16), the upright portions (16b) are bent from both ends of the intermediate portion (16a), and both end portions of the same length from the lower end of the upright portion (16b) are parallel to the intermediate portion (16a) ( 16c) is bent.

14 a, b, 15 a, b and 16 a, b show different upper reinforcing bars, respectively. Upper rebar (1
7), the downward portions (17b) are bent in opposite directions from both ends of the intermediate portion (17a) and hang down, and the downward portions (17b)
Both ends (17c) shorter than this are bent in parallel to the middle part (17a) from the lower end of the. The upper reinforcing bar (17) shown in FIGS. 15a and 15b has downward portions (17b) of different lengths hung from both ends of the intermediate portion (17a).
6 The upper reinforcing bar (17) shown in Figs. A and b has a downward facing portion (17) that is inclined so that the lower ends of the intermediate portion (17a) come close to each other.
b) is bent. In addition, in Fig. 15 a, b,
16 The shape of the upper rebar (17) shown in Figs.
It is similar to that shown in FIG. 14 a, b, and FIG. 15 a, b,
The same symbols as those in FIGS. 14A and 14B in FIGS. 16A and 16B indicate corresponding portions.

Next, the use of the level setting block of the embodiment including the above-mentioned respective parts will be described.

As shown in FIG. 19, a large number of temporary columns (18) are erected,
A frame plate (19) of a temporary concrete formwork made of plywood or the like is fixed on these columns (18) by inclining vertically. After that, the middle portion (16a) of the lower reinforcing bar (16) is press-fitted into the notch (5b) provided in the long side wall (5a) of the lower reinforcing bar holding portion (5) of the lower table (1), and the lower reinforcing bar ( 16) lower stand (1)
And the upright part (16b) of the lower rebar (16).
And both ends (16c) are projected outside the lower reinforcing bar holding part (5) and are arranged at intervals of the connecting part (8) (FIGS. 2 to 4).
See figure). In this state, the connecting portion (8) is supported on the frame plate (19) and fixed to the frame plate (19) by nailing or the like.
Next, as shown in FIG. 19 and FIG. 20, vertical and horizontal bar arrangement (20
A) and (20b) are made orthogonal to each other, and these are arranged in a plurality of upper and lower stages to form a reinforcing bar assembly (20) on a frame plate (19). In this case, the lower stand (1) has many vertical and horizontal bars (20a), (2
They are arranged at appropriate intervals inside the area surrounded by 0b). further,
The fitting recesses (15c) provided on the joint leg (15) of the height adjusting member (3) from above are fitted to the fitting projections (7b) provided on the fitting part (7) of the lower table (1), respectively. Then, the lower end surface of the joint leg (15) is supported on the step (7a) of the fitting portion (7) to fix the adjusting member (3) on the lower table (1). continue,
The fitting recesses (12b) provided in the leg portions (12) of the block body (2) are fitted into the fitting projections (15b) provided in the joint legs (15) of the height adjusting member (3) from above. Let the legs (12)
The main body (2) is fixed on the adjusting member (3) by supporting the lower end of the above on the step (15a) of the joint leg (15). Then, the middle portion (1
7a) is press-fitted into notches (9b) provided in both side walls (9a) of the upper reinforcing bar holding portion (9) of the main body (2) to hold the upper reinforcing bar (17) in the main body (2). With the upper rebar (1
7) The downward portion (17b) and both end portions (17c) are projected to the outside of the upper reinforcing bar holding portion (19) and are arranged at the intervals of the connecting portion (11), so that the level is above the formwork (19). Assemble the delivery block (21). In this case, the lower rebar (1
Directly above the middle part (16a) of 6), the middle part (17) of the upper reinforcing bar (17)
It is preferred that a) be arranged in parallel. Lower, upper rebar (1
Both ends (16c) and (17c) of 6) and (17) have vertical and horizontal reinforcement (2
0a) and (20b) are supported above and below to position these reinforcements (20a) and (20b).
a), (20b) and bottom, upper rebar (16), both ends of (17) (16
c) and (17c) may be fixed by an appropriate means. Further, as shown in FIGS. 17 and 18, the lid (4) is attached from above.
The fitting frame (4b) is fitted to the side surface of the upper reinforcing bar holding portion (9) of the main body (2), and the cover plate (4a) of the lid body (4) covers the upper opening of the upper reinforcing bar holding portion (9). In this case the cover plate (4a)
The upper surfaces of the body and the body (2) are preferably located on the same plane.

In addition, in FIG. 19 and FIG. 20, the upper reinforcing bar (1
The case of using 7) was explained, but the rebar assembly (20)
Depending on the configuration, the upper reinforcing bar (17) shown in FIGS. 15a and 15b or 16a and 16b is used. Alternatively, the upper reinforcing bar (17) may be fitted in the upper reinforcing bar holding portion (9) in advance and then the block body (2) may be attached to the height adjusting member (3). Furthermore, when there is a slight error in the positions of the reinforcing bars (20a) and (20b) of the reinforcing bar assembly (20), the reinforcing bars have a leg portion (12) of the block body (2) and a height adjusting member (3). ) When the joint leg (15) and the connecting rod (14) interfere with each other, if the interfering leg (12) or joint leg (15) is a small number of 1 to 2, bend these slightly. Alternatively, the block body (2) with respect to the lower stand (1) may be rotated around these axes, that is, the upper rebar (17) may be removed from the lower rebar (16) by cutting it with an appropriate means. Make sure that the legs (1
It is possible to avoid interference of 2), joint leg (15) and connecting rod (14).

A plurality of leveling blocks (21) assembled on the frame plate (19) of the concrete formwork as described above are arranged vertically and horizontally with a mutual interval. Then, by pouring concrete (22) onto the frame plate (19), the lower stand (1) and the main body (2) of the block (21), the lower and upper reinforcing bar holding portions (5), (9) The portions of the lower and upper reinforcing bars (16) and (17) that are held by the above, protruding from the holding portions (5) and (9), the height adjusting member (3) and the reinforcing bar assembly (20) are poured. It is embedded in concrete (22) and the concrete is cast into a board. In this case, the concrete (22) has a thickness equal to or slightly smaller than the height of the blocks (21) with the upper surface of the block (21) as a mark. Although not shown, a temporary barrier plate is provided around the frame plate (19) to prevent the concrete (22) from flowing out of the frame plate (19). Further, when the concrete (22) is placed, its upper surface is positioned slightly lower than the upper surface of the main body (2) so that the concrete (22) does not flow into the upper reinforcing bar holding portion (9). (4) may be omitted, and by further attaching a sheet or the like to the upper surface of the block body (2) in advance in place of the lid body (4), the concrete (22) is fixed to the upper reinforcing bar holding portion (9). You may not let it flow in.

The concrete (22) immediately after being cast on the frame plate (19) has fluidity, but the lower base (1) of the block (21) is fixed to the frame plate (19) and the main body (2) is also fixed. Since the upper and lower, upper reinforcing bars (16) and (17) are supported by the reinforcing bars (20a) and (20b) of the reinforcing bar assembly (20), the block (21) tries to flow down the concrete (22). Almost no displacement even under load. And the block (2
1) gives resistance to the flow of concrete (22),
Helps prevent thickening of the sloping bottom concrete (22).

When the concrete formwork including the frame plate (19) is removed after the concrete (22) is hardened and the upper reinforcing bar holding portion (9) of the main body (2) covers the lid body (4) or the sheet. Then, the lid body (4) is hit to break or peel the sheet to remove them. By doing this, the middle portion (17a) of the upper reinforcing bar (17) is provided in the upper reinforcing bar holding section (9) having a substantially box shape.
Since the part protruding from the upper reinforcing bar holding portion (9) of the upper reinforcing bar (17) is embedded in the concrete (22),
Anchor (not shown) at the middle part (17a) of the upper rebar (17)
A support member (23) such as a metal rafter supported on the concrete (22) is fixed through the support member (2).
The roof (24) can be roofed on 3). In addition, there is an intermediate portion (16a) of the lower reinforcing bar (16) in the lower reinforcing bar holding section (5) which is substantially in the shape of an inverted box, and the portion protruding from the lower reinforcing bar holding section (5) is embedded in the concrete (22). Therefore, the ceiling can be attached to the middle portion (16a) of the lower rebar (16) via a suspender or the like.

And in the said Example, although one height adjusting member (3) was used with respect to one leveling block (21),
When the concrete to be poured is thick, a plurality of height adjusting members (3) may be vertically connected and interposed between the lower stand (1) and the block body (2). Then, in the present invention, a height adjusting member in which the height of the joint leg is different depending on the thickness of the concrete to be poured may be interposed between the lower table (1) and the block body (2). Since there are only a few types of concrete thickness, it is sufficient to prepare several types of height adjusting members with different joint leg heights in advance.

In the above embodiment, the lower table (1) is provided with the fitting protrusion (7b), and the joint leg (15) of the height adjusting member (3) is fitted with the fitting recess (15c) and the fitting protrusion (15b). And the fitting recess (12b) is provided in the leg portion (12) of the block body (2) and these are fitted, but the present invention provides the fitting recess in the lower base,
Providing fitting protrusions on the legs of the block body and connecting them vertically via a height adjustment member, positions and fixes the block body, height adjustment member, and lower stand in the height direction. Alternatively, the number of legs of the block body and the number of joint legs of the height adjusting member can be appropriately increased or decreased.

Further, in the above-mentioned embodiment, the case where the leveling block is used for the roof is described, but the leveling block according to the present invention is not limited to the one having the slope, and can be applied to a horizontal roof or floor.

[Effects of the Invention] As described above, according to the present invention, a lower base having a lower rebar holding portion, an upper rebar holding portion, and a block main body having leg portions projecting below the holding portion, and the leg. Having a height adjusting member with a splicing leg connected to the part, having a concrete height adjusting member and a block body, and after constructing a concrete formwork, a lower rebar is placed in place on this formwork. The lower base held by the lower reinforcing bar holding portion is nailed and fixed by adhesion or the like, and then a reinforcing bar assembly is provided by vertically and horizontally and above and below the formwork, and further, on the lower base. The block body is fixed via the height adjustment member to hold the upper rebars in these holding parts, or the block body holding the upper rebar is fixed on the lower table via the height adjustment member, and in this state Pour concrete onto the frame to almost the same height as the upper surface of the main body. By inserting it, the thickness of the concrete can be easily made uniform in each part by using the upper surface of the main body as a mark. Further, according to the present invention, since the lower base, the height adjusting member, and the block body are made of a synthetic resin molded product, the weight is lighter than that of a conventional concrete leveling block, and the lower base is a frame. After fixing to the upper part, by fixing the main body on the lower table via the height adjustment member, even if there is a slight error in the position of the reinforcing bar assembly bar arrangement, the legs of the main body can be bent or the legs can be bent. When the number of parts is large, the main body, some of the legs of the height adjustment member, and the joint leg can be cut off to easily fix the main body on the lower table via the height adjustment member. The workability during assembly is good, and the degree of freedom with respect to the above-mentioned bar arrangement is large. And since the lower table is fixed to the formwork when pouring concrete, it does not move unintentionally, and further, the lower table in the concrete,
Since the lower and upper rebars held by the main body are embedded, the lower stand and the main body do not come off when the concrete formwork is removed after solidification of concrete. Moreover, the lower base and the lower and upper reinforcing bars held by the main body can be used for attaching members such as a roof plate and a ceiling. And, in particular, according to the present invention, since the height adjusting member is interposed between the lower table and the main body, by changing the number of height adjusting members and the length of the joint leg thereof,
The overall height of the leveling block can be easily changed, and it is possible to easily cope with the case where the thickness of the concrete cast on the formwork is different.

[Brief description of drawings]

FIG. 1 is an exploded front view showing a concrete leveling block according to an embodiment of the present invention, FIGS. 2 and 3 are front views of the same assembled state, and side views, and FIGS. 4 and 5 are The same plan view and bottom view, FIG. 6 is a plan view of the lower stand,
7 and 8 are lines VII-VII and VIII-VI in FIG.
A sectional view taken along the line II, and Fig. 9 is a plan view of the block main body.
10 and 11 are upper sectional views taken along line XX and XI-XI of FIG. 9, FIG. 12 is a plan view of the height adjusting member, and FIG.
Figures a and b are front view and plan view of the lower rebar, Figure 14 a, b and Figure 15 a,
b, FIG. 16 a, b are front views and plan views showing different upper reinforcing bars, and FIGS. 17 and 18 correspond to FIG. 10 and FIG. 11 for explaining the attachment state of the lid body. Cross section,
FIG. 19 is a vertical cross-sectional view of an upper portion of a building using a concrete leveling block according to the present invention, and FIG. 20 is a partial plan view showing a state in which the leveling block is fixed on a concrete formwork. (1) …… Lower stand, (2) …… Block body, (3) ……
Height adjusting member, (4) ... Lid, (5) ... Lower rebar holding part, (5a) ... Side wall, (5b) ... Notch, (6) ... Supporting part, (7) ... Fitting part, (7a) ... step, (7b) ... fitting convex part, (8) ... connecting part, (9) ... upper reinforcing bar holding part,
(9a) …… side wall, (9b) …… notch, (10) …… supporting part,
(11) …… Connecting part, 12 …… Leg part, (12a) …… Lower end part,
(12b) …… Mating recess, (13) …… Inner ring, (14)…
... connecting rod, (15) ... joint leg, (15b) ... fitting protrusion,
(15c) …… Mating recess, (16) …… Lower rebar, (16a) ……
Middle part, (16b) …… standing part, (16c) …… end part, (17)
…… Upper rebar, (17a) …… Middle part, (17b) …… Downward part, (17c) …… End part, (19) …… Concrete formwork frame plate, (20) …… Reinforcing bar assembly, (20a), (20b) ……
Vertical / horizontal bar, (21) …… Leveling block, (22)
……concrete.

Claims (2)

[Claims] 1. A lower rebar holding portion for holding a lower rebar embedded in concrete to be cast on a concrete form, holding a lower stand fixed on the concrete form and an upper rebar embedded in the concrete. An upper reinforcing bar holding portion and a block body integrally formed with a plurality of leg portions projecting downward from the holding portion, and a connecting leg for fixing a joint leg fixed between the lower base and the leg portion of the block body by a connecting rod. A leveling block of concrete, characterized in that it has a height adjusting member, and the lower table, the block body, and the height adjusting member are each formed of a molded product of synthetic resin. 2. A lower base is formed with a lower rebar holding portion in a substantially inverted box shape, and a middle portion of the lower rebar is held on a side wall of the holding portion.
Formed by facing a pair of notches, the fitting portion is provided at the tip of the supporting portion radially projected on the outer periphery of the lower reinforcing bar holding portion, and these fitting portions are appropriately connected by a connecting portion, The block body forms a substantially box-shaped upper rebar holding portion, and a pair of notches for holding an intermediate portion of the upper rebar are formed on the side wall of the holding portion so as to face each other. A plurality of legs that respectively face the fitting portion of the lower table via the connecting portion are provided, and fitting portions are provided at the lower ends of these legs, and the height adjusting member is provided on the outer periphery of the inner ring. A plurality of joint legs that respectively face the leg portion of the block body and the fitting portion of the lower base are provided at the tips of the radially projecting connecting rods, and the fitting provided on the leg portions of the block body at the upper and lower ends of the joint leg. The mating part and the mating part provided on the lower stand are provided with mating parts that fit in the concave and convex. Claim (1) leveling block of concrete according with Te.