JP2704431B2 - Concrete form attitude adjustment tool and concrete form attitude adjustment method using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial application field> The present invention relates to a concrete form posture adjusting tool used when assembling a concrete form into a required shape, a concrete form posture adjusting method using the same, and It is about.

<Prior art> Steel formwork has been widely used mainly for large-scale structures, for example, for casting concrete such as seawalls, but in recent years, wooden molds that are lightweight, inexpensive, and easy to handle. The frame has also been reviewed.

The inventor of the present invention has proposed various fasteners for a steel sheet formwork. A typical example is listed in Japanese Utility Model Publication No. 59-29080 (A) and Japanese Utility Model Publication No. 63-9938 ( B) and JP-B-63-32260 (C).

The fastening fitting described in the above publication (A) has a locking portion (1a) which is to be inserted into the holes (6b) and (6b) by abutting the peripheral projecting plate portions (6a) and (6a) of the steel plate form. And a metal rod-shaped main body (1) provided with

The separators described in the above publications (B) and (C) have the flat plate-shaped locking portions (6A) and (3), which are also abutted steel plate form side plates (13). It is made of metal so that it can be inserted into the minute gap between them.

As a means for adjusting the distance between the pair of molds or the posture of the molds, as shown in the above-mentioned publications (B) and (C), a pin connection hole provided in the fastening metal and an intermediate connection metal are provided. A method of driving a pin into one of many pin connection holes has been adopted.

Further, the above publication (B) discloses that a turnbuckle is supplemented in addition to the above-mentioned position variable pin connection as a means for fine adjustment.

<Problems to be Solved by the Invention> The prior arts such as the above publications (A) to (C) relate to a steel plate form, and moreover, a form posture adjusting means and method which are problematic in the present invention. No suggestions for further improvements can be drawn.

In particular, the turnbuckle disclosed in the above-mentioned publication (B) is an additional element, which causes complexity in both production and use of the concrete separator, and balances the mechanical strength between the turnbar and the intermediate bar. Also had problems.

That is, there is a possibility that the intermediate bar, which is a thin strip, may be disadvantageously deformed when forcibly twisting a high-strength turnbuckle, and improvement has been desired.

Furthermore, the means and method for adjusting the form attitude of the clamps suitable for wooden forms cannot be learned from these prior arts.

Accordingly, the present invention provides a concrete form posture adjusting tool which can finely adjust the posture of these form forms regardless of the form of a steel sheet form form or a wooden form form, and a concrete form form adjusting method using the same. It is intended to provide.

<Means for Solving the Problems> The configuration and method of the present invention for achieving the object will be described with reference to the drawings corresponding to the embodiments. A pair of first and second metal fittings arranged in a vertical direction, wherein the first metal fitting has a mounting portion to a concrete form side on one end side, and male and female first screw portions screwed to each other. In the middle part, and further, a pin connection hole for connecting to the intermediate connection metal fitting is provided on the other end side, and the second metal fitting has a mounting part to another concrete formwork or existing concrete on one end side. And having a male and female second screw portion at the intermediate portion which are screw-fitted to each other, and further having a pin connection hole at the other end side for connecting to the intermediate connection fitting. The second screw portion and the second screw portion have a reverse screw relationship to each other. You.

The first and second fittings in the form posture adjusting device of the present invention are composed of two members connected via first and second screw portions, respectively.

Each of the members has a shape suitable for attachment to the intermediate connection fitting and has a pin connection hole. In addition, the other member has a shape suitable for attachment to a fastener for a steel plate or a wooden form, a shape suitable for connection to an anchor bolt, or a shape integral with the anchor bolt.

Next, the method for adjusting the form attitude of the present invention is directed to a method of adjusting the form of the first metal fitting having a mounting portion to the concrete form side, first male and female screw portions to be screwed into each other, and a pin connection hole. An operation of attaching the attachment portion to the concrete formwork side, and a male and female second screw which is screwed with each other and attached to another concrete formwork or existing concrete and has a reverse screw relationship with the first screw portion. After the operation of attaching the mounting portion and the pin connection hole to the second metal fitting and the mounting portion to another concrete formwork or existing concrete, the pin connection hole of the first metal fitting and the second
The first connection of the intermediate connection fittings with the pin connection holes of the fittings
Attached between the second metal fittings, turning the intermediate connecting metal in one direction to make the first and second metal fittings closer to each other, or turning it in the other direction to separate the first and second metal fittings from each other. An operation of displacing in the direction is performed.

<Operation> In the form posture adjusting device of the present invention, the first screw portion of the first metal fitting and the second screw portion of the second metal fitting have a reverse screw relationship to each other, and respective ends extended from these screw portions. This is a structure used in a mode in which the parts are connected by one intermediate connection fitting.

Therefore, in the above method of the present invention, these three metal fittings constitute one huge turnbuckle as a whole. That is, by setting the direction in which the intermediate connection fitting is twisted clockwise or counterclockwise, the first fitting and the second fitting approach or separate from each other so as to decrease or increase the distance therebetween. Can be fine-tuned.

<Example> Hereinafter, an example of the present invention will be described with reference to the drawings.

The concrete form attitude adjusting tool according to the first embodiment of the present invention shown in FIGS. 1 and 2 comprises a first metal fitting (1) and a second metal fitting (2), each of which is a first member ( 1a)
And the second member (1b), and the first member (2a) and the second member (2b).
b).

The attachment portions (11) and (21) of the first members (1a) and (2a) to the concrete forms (A) and (B1) are screw rods, respectively. The male screw (12) on the opposite side of the mounting part (11) in the first member (1a) of the first metal fitting is a right-handed screw, and the male screw on the opposite side of the mounting part (21) in the first member (2a) of the second metal fitting. The screw (22) is a left-hand screw.

The female screw (13) screwed into the male screw (12) is the first
The screw portions (12) and (13) and the female screw (23) screwed into the male screw (22) form second screw portions (22) and (23), respectively.

On the opposite side of the female screws (13) and (23), a second member (1
b) and (2b) are provided with pin connection holes (14) and (24), respectively, and the form attitude adjusting device according to one embodiment of the present invention is a pair of first and second metal fittings as described above. It consists of

Next, an embodiment of the method of adjusting the form attitude of the present invention will be described with reference to FIGS.

Cone member (40) penetrating wooden formwork (A), (B1)
The threaded leg (41) is a fastener (42) that sandwiches the formwork.
And the wedge (K) is inserted into the wedge hole (43) of the fastener located outside the thick end (Y) of the lateral end applied to the outer surface of the formwork.
Is prepared to perform the above method.

Thereafter, the screw rod-shaped mounting portions (11) and (21) are screwed into the inner surface side of the cone member (40), respectively. Opposing second
One intermediate connection fitting (3) is hung over the members (1b) and (2b), and the pin connection holes (1) of the second members (1b) and (2b) are
The pins (P) are fitted through the pin connection holes (34) of the intermediate connection fittings (3) aligned with 4) and (24) and these.

The intermediate connection fitting (3) is also formed by removing two sides of the hexagonal cylinder corresponding to the hexagonal prism-shaped second members (1b) and (2b), so that the fitted two cannot rotate relative to each other. .

Then, in order to adjust the distance between the two molds (A) and (B1) to a predetermined value, the intermediate connection fitting (3) is twisted in the direction of clockwise or counterclockwise rotation. At this time, the first metal fitting (1), the second metal fitting (2), and the intermediate connecting metal (3) function as a kind of giant turnbuckle, and the fine adjustment of the distance between the molds (A) and (B1) is extremely easy. You can do it in

In addition, between the mounting parts (11) and (21) and the male screws (12) and (22), a thin angle adjusting part (5) formed by pressing and flattening a round steel material as the material is also formed. Therefore, the members (1b) and (2b) can be bent at an arbitrary angle with respect to the first members (1a) and (2a) such that the opposed second members (1b) and (2b) are aligned. Easy.

Since the pair of wooden forms assembled in this manner is sandwiched between the large-diameter cone member (40) and the wide end material (Y), not only when tightening but also between the form forms. There is no danger of breakage at the tightened part even by the lateral pressure after injecting the ready-mixed concrete.

After the concrete is solidified, the wedge (K) is removed, and the thick timber (Y) (including the thick timber not shown), fasteners (42), formwork (A), (B1) and cone members ( 40) is removed, and a small amount of mortar is filled into the truncated cone-shaped depression in the trace of the cone member to complete the concrete casting operation.

In the embodiment shown in FIGS. 3 and 4, in order to place concrete between the existing concrete elevation (T) and the wooden formwork (A), the concrete is previously planted on the existing concrete horizontal plane (C). Anchor portion (S) of the second mounting bracket (2
Other than 1 ′), it is the same as the above-described embodiment.
In this case, the angle adjusting portion (5) of the first metal fitting (1) is bent to about 35 ° in advance because it is necessary to support the inclined mold on a horizontal surface. The fine adjustment of the formwork inclination angle is performed by twisting the intermediate connection fitting (3) of the form attitude adjusting tool having a turnbuckle shape as a whole, similarly to the above-described embodiment.

 Next, the case of FIGS. 5 and 6 will be described.

This example is different from the first embodiment in that a prismatic piece (40a) and a screw rod (41a) are used instead of a concrete member. Is no different from the first example. The prismatic piece (40a) is composed of a short cylinder (R) provided with an inner screw and a plastic piece (X) having a concave portion for fitting the short cylinder (R).
Since this plastic piece is provided with flange-like projections (V) and (W) at both inner and outer ends, it is held on the concrete surface layer after solidification and hardening. Then, a small piece of plastic is pushed into the depression (B) where the screw rod (41a) has been removed.

In the embodiment shown in FIGS. 7 and 8, as an attachment portion (11) to a steel plate form (Ka), the extension leg (Q) of the U clip (U) is inserted between the butt-shaped flanges. A plate-shaped portion (E) having a hole (D) and a cone portion (F) connected to the hole and having a female screw (13) on the other end side constitute a first member (1a '). ing.

On the other hand, the second member (1b ') has a structure in which the angle adjusting portion (5) is located between the male screw (12) and the pin connection hole (14). The opened portion has a flat plate shape, and the intermediate connection fitting (3) to be engaged therewith is also U-shaped correspondingly. Although the first metal fitting (1) has been described above, the same applies to the second metal fitting (2), and a description thereof will be omitted.

9 and 10 are all the same as the embodiment of FIGS. 3 and 4 except that the cone member is replaced with the prismatic piece (40a) and the screw rod (41a) of FIGS. 5 and 6. Therefore, the description is omitted to avoid duplication.

<Effects of the Invention> As is clear from the above description, the concrete form attitude adjusting device of the present invention forms a pair of left and right or upper and lower metal fittings with mutually rotatable screw portions, and reverses these screw portions with each other. It is a screw configuration.

Therefore, in the method for adjusting the posture of the concrete formwork of the present invention, the intermediate connection fittings are connected between the metal fittings and the pins are connected to each other, and then the intermediate connection fittings are twisted right or left to finely adjust the distance or posture between the molds. A kind of giant turnbuckle that can be adjusted will appear.

Therefore, the form attitude adjusting device of the present invention requires only one screw to be a reverse screw, and does not add any special complexity to the manufacturing process.

And the handling is almost the same as the conventional product. Rather, since a complicated operation for incorporating a commercially available turnbuckle can be omitted, the manufacturing process can be simplified rather than the case of the conventional product, which can contribute to a reduction in manufacturing cost.

The method for adjusting the form attitude of the present invention using the form attitude adjusting tool of the present invention facilitates work in a relatively narrow concrete casting site. That is, there is no need for the operator to operate a conventional small-sized turnbuckle provided close to the formwork in an unreasonable position, and the relatively large space between both forms or between the formwork and the ready-made concrete surface is eliminated. This is because the intermediate fitting extending over most of the space can be operated in a relaxed position.

If the intermediate connection fitting of the present invention, which functions as an operated member of a so-called giant turnbuckle as described above, has a pin connection hole perforated with an appropriate pitch over its entire length, this is a problem in construction. Even if it is cut at an arbitrary position according to the variation of the distance between the molds at the site, it will still function as an intermediate connecting member, so it also serves as a means for performing coarse adjustment before fine adjustment by turnbuckle. . That is, the intermediate connection fitting in the present invention is:
It is an extremely effective member that performs both the coarse adjustment and the fine adjustment, and has the effect of two birds per stone.

Further, there is a fear that the torque applied when the turnbuckle is twisted may cause bending distortion in the thin strip material as described in the above-mentioned publication (B) (Japanese Utility Model Publication No. 63-9938).
This has been solved in the present invention. This is because, in the present invention, not only the bending strength is sufficiently large due to the U-shaped cross section of the intermediate connection fitting, but also some of the members connected thereto are manufactured in a thin strip shape. Because it does not.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a connected state of a concrete form posture adjusting device according to an embodiment of the present invention, FIG. 2 is a partially cutaway front view showing its used state, and FIG. FIG. 4 is a partially cutaway front view showing a use state of the concrete form posture adjusting device in the embodiment, FIG.
FIG. 5 is a partially cutaway front view showing another example of use of those shown in FIGS. 1 and 2, FIG. 6 is an exploded perspective view of a main part thereof, and FIG. FIG. 8 is a partially cutaway front view, FIG.
The figure is a partially cutaway front view showing another example of use of those shown in FIGS. 3 and 4, and FIG. 10 is an enlarged exploded perspective view of a main part thereof. In the figure, (1) is a first fitting, (2) is a second fitting, (3) an intermediate connecting fitting, (11) and (21) are mounting parts, (12) and (13) are first screw parts, ( 14), (24) are pin connection holes, (22),
(23) is a second screw portion, (A) and (B1) are concrete forms, and (B2) is existing concrete.

Claims (2)

(57) [Claims] 1. A pair of first and second metal fittings (1) and (2) arranged in a horizontal direction or a vertical direction, wherein the first metal fitting (1) is attached to a concrete form (A) side. Department (11)
On the one end side, and has first and second male and female screw portions (12) and (13) screwed into each other at an intermediate portion, and further has a pin connection hole (14) connected to the intermediate connection fitting (3). ) At the other end, and the second metal fitting (2) is attached to another concrete form (B1) or an existing concrete (B2).
1) on one end side, and the male and female second
It has screw portions (22) and (23) at an intermediate portion, and further has a pin connection hole (24) at the other end side for connecting to the intermediate connection fitting (3). ), (13) and the second screw portions (22), (23) are in a reverse screw relationship to each other. 2. The mounting part (1) on the concrete formwork (A) side.
1) at one end, first and second male and female screw portions (12) and (13) to be screwed into each other at an intermediate portion, and further, a pin connection hole (1).
The operation of attaching the attachment portion (11) to the concrete form (A) side of the first metal fitting (1) having the other end 4), and another concrete form (B1) or existing concrete ( A second male / female second screw portion (22) having an attachment portion (21) to one end side of the first screw portion (12), (13) and having a reverse screw relationship with the first screw portions (12) and (13). , (23) in the middle part, and the mounting part (21) of the second metal fitting (2) having the pin connecting hole (24) on the other end side, in another concrete form (B1). Alternatively, after the operation of attaching to the existing concrete (B2), the pin connection hole (14) of the first metal fitting (1) and the second
The intermediate connection fitting (3) is attached between the first and second metal fittings by means of the pin connection hole (24) of the metal fitting (2), and the intermediate connection metal fitting (3) is turned in one direction to form the first and second metal fittings. A method of adjusting the posture of a concrete formwork, comprising: bringing both metal fittings closer to each other, or rotating the metal fittings in another direction to displace the first and second metal fittings in directions away from each other.