JPH0226028B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is applicable to concrete pouring when assembling and erecting a formwork for concrete located to the side of the planned concrete pouring position in construction work or civil engineering work. This is a connecting fitting used to maintain the required spacing between the formworks installed on both sides of the planned installation location.

<Prior art> Conventional separators for this type of concrete formwork are disclosed in, for example, the Utility Model Application filed in 1973 filed by the present applicant.
As seen in the specification of No. 53788 (Utility Model Application No. 52-143836), the plate-like part and the intermediate part sandwiched between the concrete forms were made of a single member made of a single piece of material. .

<Problems to be solved by the invention> This product is extremely strong when the concrete is placed at regular intervals, is easy to incorporate into formwork, and has a fixed width when the concrete is placed at regular intervals. It is extremely excellent in that it is easy to use. However, when creating something with a trapezoidal cross-section, such as a sand control wall or breakwater, where the interval between concrete pours is wide at the bottom and narrow at the top, many types of separators with different lengths are manufactured. This has the disadvantage that when assembling the formwork, one has to select the required length. Therefore, in order to solve these drawbacks, the present applicant has made it possible to set the spacing between the concrete formwork to the desired value even when building an embankment with a cross-sectional shape such as a sand embankment or a breakwater or with a deformed trapezoidal shape. He invented a metal fitting that can be held at intervals.

<Means for Solving the Problems> That is, the present invention is used by interposing the concrete formwork between the formwork abutting end surfaces for interconnecting the concrete formwork, and attaching a part of the formwork removably between the formworks. A U-clip which is a joint fitting, one end of which is formed into a flat plate-shaped locking part, and which has substantially the same shape and size as a connecting hole formed in the peripheral side plate of the formwork. A hole for insertion is formed, and the other end has a cross-sectional shape of approximately U.
It is formed in a continuous part curved in the shape of a letter 2, and has a structure in which a pair of holes for inserting a connecting pin are formed through the opposite side wall portions of the continuous part 2. It is.

<Function> The flat plate-shaped locking portion on one end side of the joint metal fitting configured as described above is inserted between the peripheral side plates of the concrete formwork, and the U-clip insertion hole formed in the locking portion is inserted. Align the hole with the connection hole formed in the formwork peripheral side plate, insert the U clip to hold the formwork peripheral side plate, and connect the connecting part on the other end of the joint fitting to the side of the space where concrete is to be poured. The connecting pins are formed at both ends by inserting both ends of the intermediate connecting fitting, which is the third member, into the U-shaped grooves of the connecting parts of the left and right joint fittings. Connecting pins are inserted into the through holes for insertion and the pair of connecting pin insertion holes to be used as a series of integral rigid body separators.

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

One end of a band-shaped body made of steel is formed into a flat plate-shaped locking part 1 to be inserted between the abutting end surfaces of vertically adjacent metal box-shaped concrete formworks 5, 5. In the joint fitting A, the other end is bent into a U-shaped cross section and hardened to form a connecting part 2 for the connector 3, which will be described later, which also serves as a reinforcing recess. 5,
A connecting hole 1' for the connecting portion 5 is formed by punching, and on opposite side wall portions of the connecting portion 2,
A plurality of pairs of holes 2', 2' for inserting connecting pins are formed at appropriate intervals along the longitudinal direction. 3 is inserted into the reinforcing recess of the connecting part 2 through a connecting pin 4 with a head which is removably inserted into a suitable pair of holes 2'2' among the plurality of pairs of holes 2, 2'... This is an intermediate bar end connector that is connected by being fitted from above. This connector 3 is as shown in the figure.
The pair of side walls facing each other across the U-shaped groove of the continuous portion 2 have substantially equal widths, and when fitted into the U-shaped groove, the As clearly shown in FIG. 3, both the left and right outer surfaces are formed so as to contact the inner surfaces of the opposing side walls of the U-shaped groove, and have a through hole 4' through which the connecting pin 4 is inserted. At the same time, a female threaded hole 3'' is provided at the shaft core on the opposite side of the locking portion 1 with respect to the through hole 4'.
is engraved.

3' is two joint fittings A that connect the connectors 3 as described above, and the male screws 31 and 32 carved at both ends thereof are screwed into the female screw holes 3'' and 3'' of the connectors 3 and 3, respectively. By doing so, it is a long rod-shaped intermediate bar for connecting to each other, and both female screw holes 3'' in a pair of joint fittings A, A,
3'', one has a right-hand thread and the other has a left-hand thread.

The separator is constructed by connecting a pair of joint fittings A, A via an intermediate bar 3'.
5... is inserted between the abutting end surfaces of the circumferential side plates 5', 5'..., and the holes 1', 1' provided in the locking portions 1, 1 and the adjacent circumferential side plates 5', 5'... With the connecting holes 7, 7... provided in... aligned in phase, insert the U clips 6, 6 into these holes 1', 7, 7... at position 8 as indicated by the imaginary line in Figure 5. Insert the tips 6', 6' in common and rotate as shown by the arrows to attach the clamping pieces 6'', 6'' to the adjacent formworks 5, 5.
... Formworks 5, 5 connected at the same time as they are connected to each other...
The separator is connected to...

In this state, when the intermediate bar 3' is rotated to the right or left, both joint fittings A, A approach or separate from each other, and the overall length of the separator is continuously finely adjusted.

Fine adjustments to the separator length can be made before connecting the separator to the opposing formwork. Also, after changing the relative position between the connector 3 and the connecting part 2,
By selecting a suitable pair of holes 2', 2' and connecting them with a pin 4, the separator length can be roughly adjusted.

Note that there may be only one pair of holes 2', 2' provided in the continuous portion 2.

<Effects of the Invention> As is clear from the above description of the embodiments, the present invention has a flat plate-shaped portion inserted at one end between the left and right concrete formworks, and the other end is placed at a position protruding into the space where concrete is to be placed. Since these are connected by a separately formed intermediate connecting fitting, the entire length of the separator can be set to any desired length depending on the length of the intermediate connecting fitting. This is possible. Therefore, the joint fittings referred to in the present invention do not need to be manufactured in large numbers or to be selected for use; in other words, only one type of joint fittings can be manufactured in large quantities. It has a remarkable effect that was completely unimaginable in the past, in that it can be used as a joint fitting for separators for concrete formworks of various shapes such as breakwaters, sea walls, and sand walls with trapezoidal cross-sections. It is something that exists.

[Brief explanation of drawings]

The drawings show embodiments of the present invention.
The figure is a side view, Figure 2 is a plan view, Figure 3 is Figure 1A.
-B sectional view, FIG. 4, and FIG. 5 are a partially cutaway side view and a plan view of the state of connection to the formwork. 1...Locking part, 2...Connecting part, 3...Connector,
3'...Intermediate bar, 3''...Female thread, 4'...Through hole for pin insertion, 5...Concrete formwork, 3
1, 32...Male thread, A...Joint fitting.

Claims (1)

[Scope of Claims] 1. A joint fitting A used by interposing between the formwork abutting end surfaces for interconnecting the concrete formworks 5, 5 and removably attaching a part between the formworks 5, 5. One end side is formed in a flat plate-shaped locking part 1, and the locking part 1 has a connecting hole 7 formed in the peripheral side plate 5' of the formwork 5 and approximately the same size and shape. A continuous part 2 is formed with a hole 1' for inserting the U clip 6, and the other end is curved into a substantially U-shaped cross section.
The opposite side wall portions of the connecting portion 2 are provided with a pair of holes 2' for inserting the connecting pin 4,
Joint fitting for concrete formwork with 2' through-hole. 2. The concrete according to claim 1, wherein a plurality of pairs of holes 2', 2' for inserting the connecting pin 4 are formed at required intervals along the longitudinal direction of the connecting part 2. Joint fittings for formwork.