JPH05239919A - Interval retainer for concrete form - Google Patents

Abstract

PURPOSE:To easily install a form surely and in a short time, also eliminate the possibility to damage the form, and easily cope with the change of width of foundation concrete to be placed. CONSTITUTION:An outer side regulating piece 4 is welding-fixed to one end of a connecting piece 3. An inner side regulating piece 5 is welding-fixed to the connecting piece 3 on a little inner side of the outer side regulating piece 4. A form engaging part 6 is formed between the outer side and inner side regulating pieces 4 and 5. The outer side regulating piece 4 is formed in a length of at least a half or more of an overall height of the form. The inner side regulating piece 5 is formed in a length in a range noninterfering to foundation concrete to be placed. Plural through holes 7 are formed on the connecting piece 3. The connecting pieces 3 of a pair of the regulating members 2 having the same shape are mutually overlapped above and below, and bolts 8 are put into through holes 7 to threadedly mount nuts 9 for composing an interval retainer. A distance between the form engaging parts 6 is made changeable by changing connecting positions of both the connecting pieces 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete mold interval holder for holding concrete molds at a predetermined interval while facing each other.

[0002]

2. Description of the Related Art Generally, in river construction and road construction,
As shown in FIG. 7, a side wall of a river or a road may be constructed by stacking a large number of blocks 21. Then, at the time of placing the basic concrete K, which serves as a support portion of the blocks 21, the concrete formwork 10 made of wood board is used.

Here, the conventional installation structure of the mold 10 will be described. As shown in FIG. 8, first, the mold 10 is arranged in a facing state on a base B made of concrete or stone. Then, a wooden width stop 22 for restricting the inward movement of the mold 10 is arranged between the lower parts of the opposite molds 10, and a wooden width stop 23 is similarly fixed between the upper ends by a nail. Further, a wooden pile 24 is hammered and fixed at an outer position of the form 10, and a wooden beam 25 is erected and fixed between the wooden pile 24 and the upper and lower parts of the form 10 with a nail. In this way, the opposing molds 10 are held at a predetermined interval, and the molds 10 at the time of placing concrete are placed.
It is designed to prevent misalignment. And formwork 1
The width stop 22 between the lower parts of 0 is removed, low concrete concrete with a low slump is poured between the molds 10, and the shape of the upper surface of the concrete is formed into a predetermined shape, whereby the basic concrete K is formed.

[0004]

However, in the above-mentioned prior art, a large number of materials such as width stoppers 22 and 23, wooden piles 24 and beams 25 are required as materials for installing the form 10, The work of assembling and disassembling them was very complicated, and the transportation of a large number of these materials and inventory control were also difficult. Further, since nails are used when assembling these materials, not only the nail striking and dismounting work at the time of installing and removing the mold 10 is very troublesome, but also the nail 10 striking the mold 10 There is also a problem that the number of times they are used is reduced by damaging various materials that support them and the materials that support them. Also, the formwork 10
A large work space is required because the wooden piles 24 and the beams 25 are arranged at the outer side of the
There is also a problem that if it is difficult to secure the space, the work efficiency will be reduced. Further, as described above, since the work of installing and removing the conventional formwork is complicated, a special worker such as a formwork carpenter is required, and there is a problem that the work time becomes long.

The present invention has been made to solve the above problems, and a first object of the present invention is to make it possible to reliably and easily install a formwork in a short time. An object of the present invention is to provide a space holder for a concrete formwork that does not need to be used and does not damage the formwork.

A second object of the present invention is to provide a space holder for concrete formwork which can easily cope with changes in the width of the foundation concrete to be placed.

[0007]

In order to achieve the above-mentioned object, in the first aspect of the present invention, outer restriction pieces are formed at both ends of the main body, and inner restriction pieces are formed slightly inside thereof, and both of these pieces are formed. Forming part fitting part for fitting the concrete formwork and holding the same formwork at a predetermined opposing interval is provided between them, and the length of the outer side regulation piece is formed to be at least half or more of the total height of the formwork. In addition, the inner regulating piece is formed shorter than the outer regulating piece.

In the second aspect of the invention, the distance between the mold fitting portions can be changed and adjusted. In the third invention, a pair of regulating members having a mold fitting portion at one end is formed, the pair of regulating members have the same shape, and the pair of regulating members are connected to form a main body. is there.

In the fourth aspect of the invention, the distance between the mold fitting portions can be changed and adjusted by changing the connecting position of the pair of regulating members. In the fifth invention, an outer regulating piece is formed at one end of the connecting piece, an inner regulating piece is formed slightly inside thereof, and a formwork fitting portion for fitting a concrete formwork is provided between the two pieces. The connecting piece is provided with a connecting means.

[0010]

Therefore, according to the present invention, the installation of the formwork can be completed only by fitting the formwork fitting portion of the space holder to the formwork. Then, the outer limit piece and the inner limit piece can reliably hold the formwork at a predetermined interval.
Further, since the length of the outer restricting piece is formed to be at least half the total height of the formwork, the formwork can be reliably supported from the outside, and the position of the formwork is displaced during concrete pouring. There is no fear. Further, by changing the distance between the form fittings, the same spacing tool can be used to accommodate any width of foundation concrete.
Further, since the main body is constituted by connecting a pair of regulating members having the same shape, the manufacturing can be performed more easily and the inventory management etc. can be performed as compared with the case where the different shapes are manufactured respectively. Will also be easier.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment embodying the present invention will now be described with reference to FIG.
~ It demonstrates based on FIG. As shown in FIGS. 1 and 2, the main body 1 of the spacing member is entirely formed of an iron angle member, and is composed of a pair of regulating members 2 having the same inverted L shape. Explaining the restricting member 2, an angle restricting member is welded and fixed at a substantially right angle to form an outer restricting piece 4 at one end of a connecting piece 3 made of one angle member. Further, a short angle member is welded and fixed at a right angle to the connecting piece 3 slightly inside the outer restricting piece 4 to form an inner restricting piece 5. A form fitting portion 6 is formed between the outer side regulation piece 4 and the inner side regulation piece 5.

The outer restriction piece 4 is formed to have a length of at least half or more of the total height of the concrete formwork 10 described later (in this embodiment, substantially the same as the total height of the formwork 10). Further, the inner regulating piece 5 is formed to be considerably shorter than the outer regulating piece 4, that is, as shown in FIG. 3, has a length which does not interfere with the foundation concrete K to be placed. In addition, a plurality of (four in this embodiment) through holes 7 as connecting means are formed in the connecting piece 3 along the length direction thereof.

Then, a pair of regulating members 2 having the above-described structure are prepared, the connecting pieces 3 of the regulating members 2 are vertically overlapped with each other, and the bolt 8 is inserted into the through hole 7 so that the nut 9 is inserted. By being screwed, a space holder having a substantially U shape as a whole is formed. The connecting positions of both connecting pieces 3 are not limited to the positions shown in FIG. 1 and FIG. 2, but may be any positions as long as the through holes 7 of both connecting pieces 3 match at least two places. The connection position can be selected. That is, by changing the connecting position of both the connecting pieces 3, the distance between the mold fitting portions 6 of the both regulating members 2 can be changed, and the distance between the mold fitting portions 6 is
It is changed and adjusted according to the width of the foundation concrete K to be placed.

As shown in FIG. 3, the concrete forming surface 10 is provided on the upper and lower edges of the concrete formwork 10 made of wood board.
The upper and lower joints 11 and 12 are attached on the opposite sides of a, respectively. Then, the form fitting portion 6 is fitted into the upper sleeve 11 from above.

As shown in FIG. 3, the molds 10 are arranged on the base B so that the concrete molding surfaces 10a of the molds 10 face each other, and the molds of the gap holders are placed on the upper shafts 11 of the molds 10 facing each other. By fitting the frame fitting portion 6 from above and arranging a plurality of spacing holders at appropriate intervals, the installation of the mold 10 is completed. At this time, the outer regulating pieces 4 and the inner regulating pieces 5 accurately hold the interval between the facing molds 10 at a constant value. And the formwork 1 arranged oppositely
A concrete having a low slump is poured into the space between 0 and the shape of the upper surface of the concrete is formed into a predetermined shape, whereby the basic concrete K is formed. At this time, the weight of the space holder fitted from above acts so as to prevent the mold frame 10 from being displaced during concrete pouring.

Further, the outer frame 4 supports the form 10 from the outer side over substantially the entire height from the upper end to the lower end. That is, if the outer restricting piece 4 is short and the mold 10 is supported from the outside only at the upper end portion thereof, the mold 10 may tilt or fall, and the pressure of the concrete poured between the molds 10 may increase. As a result, an outward moving force acts on the mold 10 and the lower portion of the mold 10 may be displaced outward. However, the outer regulation piece 4 causes the formwork 1 to
Since 0 is supported from the outside in a large range of at least half of the total height, the formwork 10 is securely arranged in an upright state without tilting or falling, and the lower part of the formwork 10 is pressed by the pressure of concrete. There is no fear of slipping outward. Therefore, it is not necessary to support the mold 10 from the outside with another member. Then, after the basic concrete K has solidified, the spacing holder can be removed by simply lifting the spacing holder above the form 10, and the form 10 can be immediately removed.

When placing a concrete foundation K having a width different from the above, the distance between the form fitting portions 6 of both regulating members 2 is changed according to the width of the foundation concrete K. Adjust it. That is, by shifting the connecting pieces 3 of the respective regulating members 2 from each other in the lengthwise direction and changing the connecting positions of the two connecting pieces 3, the distance between the form fitting portions 6 becomes equal to the width of the basic concrete K. You can correspond.

As described above, in the concrete mold interval holder of this embodiment, the mold fitting portions 6 provided at both ends of the main body 1 are simply fitted into the mold 10 from above to form the mold. 1
0 installation can be completed. Therefore, unlike the above-mentioned conventional, it does not require many materials such as beams,
Since it is not necessary to use nails, the work of installing and removing the mold 10 can be easily performed in a short time, and a special worker such as a carpenter of a mold is not required. Further, since it is not necessary to use nails, there is no risk of damaging the formwork 10, the number of times of use can be increased, and eventually the cost can be reduced. Further, unlike the above-mentioned conventional technique, the wooden piles and the beams are not arranged at the outer position of the mold 10 in a state of largely overhanging, and the work efficiency is reduced even if the space at the outer position of the mold 10 is small. There is no fear of doing it.

Further, the mold 10 can be reliably held at a predetermined interval by the outer restriction piece 4 and the inner restriction piece 5 of the mold fitting portion 6, and the outer restriction piece 4 has a total height of the mold 10. Since it is formed to have almost the same length as the above, the mold 10 can be reliably supported from the outside over the entire height thereof, and the position of the mold 10 does not deviate during concrete pouring.

Further, the main body 1 is constructed by connecting a pair of regulating members 2 having the same shape, and the distance between the mold fitting portions 6 can be changed by changing the connecting position. Therefore, the foundation concrete K to be placed
By appropriately changing the distance between the form fitting portions 6 in accordance with the width of the above, it is possible to easily cope with the placing of the basic concrete K of any width using the same spacing holder. That is, it is not necessary to manufacture a plurality of types of space holders corresponding to the width of the foundation concrete K to be placed, and it is only necessary to manufacture the regulating member 2 having the same shape, so the manufacturing cost can be reduced. At the same time, transportation and inventory management become easy.

[0021]

Another Embodiment Next, a second embodiment of the present invention will be described with reference to FIG. By the way, in the concrete frame spacing tool of the second embodiment, the connecting piece 3 is formed of a channel material as compared with the first embodiment.
Further, auxiliary connecting pieces 13 and 14 made of a channel material for sandwiching both connecting pieces 3 of the pair of regulating members 2 from above and below are provided, and each auxiliary connecting piece 13 and 14 has a through hole 7 of the connecting piece 3. A plurality of through holes 15 and 16 are formed so as to correspond to each other. Then, with the connecting pieces 3 sandwiched between the auxiliary connecting pieces 13 and 14, the bolts 8 are inserted into the through holes 15, 7 and 16 and the nuts 9 are screwed into the gap holders. ..

That is, also in the second embodiment, as in the first embodiment, the main body 1 is constructed by connecting a pair of regulating members 2 having the same shape, and each regulating member 2
By shifting the connecting pieces 3 of each other in the lengthwise direction and changing the connecting positions of both the connecting pieces 3 and the auxiliary connecting pieces 13 and 14, the basic concrete for setting the distance between the form fitting parts 6 The width of K can be easily accommodated. Further, by simply fitting the mold fitting portions 6 provided at both ends of the main body 1 to the mold 10 from above, the installation of the mold 10 can be easily completed and the mold fitting portion 6 can be easily installed. The effect of being able to reliably hold the mold 10 at a predetermined interval by the outer regulating piece 4 and the inner regulating piece 5 is also the same as in the first embodiment.

Next, a third embodiment of the present invention will be described with reference to FIG. Now, as shown in FIG. 5, in the spacing tool for concrete formwork of the third embodiment, as shown in FIG.
Is not composed of a pair of restricting members 2 but is formed of a single strip-shaped steel plate, and the reinforcing rib 1 is formed along the length direction thereof.
7 are formed. Further, both ends of the main body 1 are bent at right angles to form an outer restricting piece 4, and an inner restricting piece 5 is welded and fixed slightly inside the outer restricting piece 4.

Also in the third embodiment, as in the first and second embodiments, the form fitting portions 6 provided at both ends of the main body 1 are simply fitted into the form 10 from above. The installation of the mold 10 can be completed easily, and the mold 10 can be reliably held at a predetermined interval by the outer restriction piece 4 and the inner restriction piece 5 of the mold fitting portion 6. Further, the outer restricting piece 4 can securely support the mold 10 from the outside over the entire height thereof, and there is no fear that the position of the mold 10 will be displaced during concrete pouring. Furthermore, since it is not necessary to use nails, there is no risk of damaging the mold 10 and the number of times the mold 10 is used can be improved.

The present invention is not limited to the above-described embodiment, and for example, as shown in FIG. 6, the outer regulating piece 4 and the inner regulating piece 5 are attached so as to be slightly widened and shown in the same figure. Such a shape can be used for pouring the basic concrete K, the outer restriction piece 4 is formed to have a length of about half of the total height of the formwork 10, and the inner restriction piece 5 is used as the basic concrete K. To make the distance between the mold frame fitting portions 6 more finely adjustable, or to form the through hole 7 in a long groove shape, It is also possible to embody by arbitrarily changing the configuration of each part within a range not departing from the spirit of the present invention, such as making the distance between the frame fitting parts 6 steplessly adjustable.

[0026]

As described above in detail, according to the present invention, the mold can be installed reliably and easily in a short time, and it is not necessary to use nails, and the mold is damaged. The effect that there is no fear is obtained. Further, there is an effect that it is possible to easily cope with a change in the width of the foundation concrete to be placed.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a concrete mold spacing tool embodying the present invention.

FIG. 2 is an exploded perspective view of a space holder.

FIG. 3 is a cross-sectional view showing a state in which a space holder is arranged on a mold.

FIG. 4 is an exploded perspective view showing a space holder according to a second embodiment of the present invention.

FIG. 5 is a perspective view showing a space holder according to a third embodiment of the present invention.

FIG. 6 is a sectional view showing another example of the present invention.

FIG. 7 is a cross-sectional view showing a state in which blocks are stacked on basic concrete.

FIG. 8 is a cross-sectional view showing a conventional mold installation structure.

[Explanation of symbols]

1 main body 2 regulating member, 3 connecting piece, 4 outer regulating piece, 5 inner regulating piece, 6 form fitting part, 7 through hole as connecting means, 10 concrete form.

Claims (5)

[Claims] 1. An outer regulating piece (4) is formed at both ends of a main body (1), and an inner regulating piece (5) is formed slightly inside thereof, and a concrete mold is provided between these both pieces (4, 5). A frame fitting portion (6) for fitting the frame (10) to hold the same frame (10) at a predetermined opposing interval is provided, and the length of the outer restriction piece (4) is set to that of the frame (10). A space holder for a concrete formwork, characterized in that it is formed to have a length of at least half or more of the total height and that the inner regulating piece (5) is formed shorter than the outer regulating piece (4). 2. The space holder for a concrete formwork according to claim 1, wherein the distance between the formwork fitting portions (6) can be changed and adjusted. 3. A pair of regulating members (2) having a form fitting portion (6) at one end is formed, the pair of regulating members (2) having the same shape, and the pair of regulating members (2). ) Is connected to form the main body (1). 4. The space for concrete formwork according to claim 3, wherein the distance between the formwork fitting portions (6) can be changed and adjusted by changing the connecting position of the pair of restriction members (2). Holding device. 5. An outer regulating piece (4) at one end of the connecting piece (3).
And the inner regulating piece (5) slightly inside
A concrete fitting part (6) for fitting a concrete formwork (10) is provided between the two pieces (4, 5), and the connecting piece (3) is provided with connecting means. Spacing tool for formwork.