JPH0644990Y2 - Flap material connecting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a flap material connecting device for fixing flap materials used for supporting a mold or the like in parallel to each other.

(Prior Art) Conventionally, a formwork used for pouring concrete is generally made of a lightweight steel or the like in a single material or in parallel to form a buttery material, and the buttery materials are joined in a grid pattern vertically and horizontally. The clapboard is attached to these flaps to form them, but the size of the formwork, that is, the length and width, must be set according to the construction object. Therefore, as the single material of the flap used for the formwork, several kinds of standard lengths such as 2m, 3m, and 5m are prepared, and the standard length flaps have the required length and width. When assembling into the mold, a plurality of standard length flaps are used in a lap joint, and the length of the lap is adjusted to increase or decrease to match the shape of the mold.

The lap joint of the flutter materials in the mold is conventionally performed by a simple connecting means such as sandwiching two flutter materials with washers as shown in Japanese Utility Model Laid-Open No. 58-5542. Therefore, the lap joint portion of the buttery material is a discontinuous portion of the beam in terms of structural mechanics, it is almost impossible to transmit stress to each other, and the strength and rigidity of the form itself are low. However, if it is a destined flap material that is repeatedly diverted to molds of various sizes, it has been unavoidable from the economical point of view. Therefore, since the conventional mere flap having a lap joint structure is discontinuous as a beam, the flutter of the formwork is structurally calculated as a set of simple beams.

(Problems to be solved by the invention) By the way, in recent years, the formwork technology is shifting to a method by crane suspension or wheel movement, but in that case, a large heavy frame is handled from the overlapping part of the flaps during handling. In order to prevent breakage, it has been required to increase the strength of the form, and as a countermeasure against this, it is necessary to cut and align the shape of the form according to the size of the form or weld and join it to form a long continuous body without overlapping parts. The current situation is to use flap material. Since such a seamless flutter can be treated as a continuous beam supported by many fulcrums, the strength and rigidity of the form become significantly high, and the amount of bending of the flutter at the time of placing concrete (the form Although there is an advantage that the amount of bending) can be kept low, it is uneconomical to cut and align the flap material according to the formwork dimensions, or to weld and join the dimensions. Yes, this results in a significant increase in the cost of the formwork.

The present inventor has been conducting research and development on large-scale movable formwork for many years, but in order to construct a large-sized frame that is lightweight, easy to handle, and has high strength and rigidity, cut-and-cut or welded flutter material We devise a very simple and inexpensive method for joining flapping materials without damaging the flapping material, without leaving a process such as splicing, leaving a discontinuity in the joint to an arbitrary length. This has been a major issue.

The present invention has been made in order to solve the above problems, and can solve the problems of bending and torsional stress in a flap material having a structure formed by overlapping and joining the flap materials, and It is an object of the present invention to provide a buttery material connecting device which is excellent in rigidity, has a simple structure, is low in cost, and can be easily joined and adjusted for expansion and contraction.

(Means for Solving Problems) Next, the structure of the device of the present invention will be described with reference to FIGS. 1 to 6 corresponding to the embodiment. The flutter materials 1a and 1b using the grooved steel of the present invention will be described. On the other hand, many bolt insertion holes 2 and 2 are provided at equal intervals along the axis, and on the other hand, screw rods 4 and 4 are respectively attached to both end surfaces of the seat 5 formed to have a required thickness. And a connecting member 3 is formed by standing upright with the connecting member 3 and a plurality of connecting members 3 are arranged between overlapping portions of the butter members 1a and 1b to be joined, and screw rods 4 and 4 of the connecting members 3 and 3 are arranged. Through the bolt insertion holes 2 and 2 of the two butter members 1a and 1b facing each other, and the nuts screwed into the screw rods 4 and 4.
It is characterized by tightening by 6 and 6.

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

In FIGS. 1 to 5, reference numerals 1a and 1b are connecting butter materials, and groove type steel or light groove type steel is used. As shown in FIG. 5, this flutter material has a predetermined equal interval P along the axis of the flutter material 1a, 1b at the end portion over the entire length or overlapping with other flutter material. A large number of bolt insertion holes 2, 2 are arranged in a row.

3 is a connecting tool for connecting the flap materials 1a and 1b.
As shown in FIG. 3 and FIG. 4, at the center of the opposite end surfaces 5a, 5a of the large-diameter seat body 5 having the required thickness, the butter members 1a, 1b are erected outwardly upright. The screw rods 4, 4 which penetrate the bolt insertion hole 2 are projectingly provided, and the both end faces 5a, 5a are formed in parallel flat faces. Then, nuts 6, 6 screwed onto the screw rods 4, 4 are provided as auxiliary members.

The flutter materials 1a and 1b are combined by using a plurality of the above-mentioned connecting tools 3. That is, as shown in FIGS.
The ends of a and 1b are overlapped with each other, and the two connecting members 3 and 3 are arranged at intervals in the overlapped portions, and the screw rods 4 and 4 protruding on both sides of each connecting member 3 and 3 are arranged. Are respectively inserted into the bolt insertion holes 2, 2 of both butter members 1a, 1b, and nuts 6, 6 are screwed together to tighten them. As a result, the flutter members 1a, 1b are fixed by being pinched by the flat surfaces 5a, 5a of the seat body 5 of the coupling tools 3, 3 and the tightening surfaces of the nuts 6, 6. Then, the length of the flap material due to the connection can be adjusted by the size of the overlapped length of the flap materials 1a and 1b, and the adjustment can be increased or decreased in units of the interval P between the bolt insertion holes 2 and 2.

In addition, when the overlapping portion of the flap material 1a, 1b becomes long,
Another connecting tool may be arranged between the connecting tools 3 and 3 for tightening. When tightening the nut 6, a washer may be interposed between the nut 6 and the flap material 1a, 1b, although not shown.

FIG. 6 shows another embodiment of the flap material 1a (1b).
Between the bolt insertion holes 2 and 2 in the terminal part, the distance P between them
With a spacing p of 1/2 of that of the bolt insertion holes 2 ', 2'
Is provided. As shown in FIG. 7, this flap material 1
When using a and 1b, fix the fixing point by both connecting tools 3 and 1
By selecting any of the three holes 2, 2 ', 2 with the interval p of / 2, the bond length of the flap materials 1a, 1b can be finely adjusted with the interval p of 1/2 as a unit. Will be.

FIG. 8 shows still another embodiment of the flap material 1a (1b), in which two bolt insertion holes 2, 2 having a space P at the end are communicated to form a long hole 2 ″. This flap material 1
As shown in FIG. 9, one of the connecting rods 3, 3 has one screw rod 4 inserted into the elongated hole 2 ″ and the other screw rod 4 inserted into the normal bolt insertion hole 2 as shown in FIG. In this case, the joint length of the flaps 1a and 1b can be adjusted steplessly.

Further, Fig. 10 shows still another embodiment of the flap material 1a (1b), in which the elongated holes 2 "are arranged at intervals P. Such a flap material 1a In 1 and 1b, the bond length can be adjusted steplessly.

The flutter material 1a (1b) according to each of the above embodiments can be used in various combinations.

The flutter material connecting device of the present invention is configured as described above, and can be applied to the connection of various kinds of flutter material such as horizontal flutter and vertical flutter for supporting the formwork. Referring to FIG. 12, one row of the vertical flap 7 is composed of two flap members 1a and 1b arranged in parallel and joined by fixing members 8 and 8 such as washers and bolts and nuts. On the other hand, the horizontal flap uses the flap materials 1a and 1b combined according to the present invention. The horizontal flutters are arranged side by side at an interval vertically, and are fixed at the intersecting points of the vertical flutter 7 by a fastener or the like. And
The dam 10 is fixed and erected on these lateral flaps by using the fixtures 9 to form a form. in this case,
The length of the lateral flap can be changed by changing the length of the overlap at the joint portion of the joined flap materials 1a, 1b by the connecting tools 3, 3, and therefore, the length of the form in the longitudinal direction of the transverse flap can be changed. The length can be changed to some extent.

(Effect of the Invention) As described above, in the device of the present invention, a large number of bolt insertion holes are arranged at equal intervals along the axis of the flap material using grooved steel, while the required thickness is set. On both end surfaces of the seat body formed in, respectively, a screw rod is erected integrally with the seat body to form a connecting tool, and a plurality of the connecting tools are arranged between overlapping portions of the butter material to be joined, It has a structure in which the threaded rod of the connecting tool is inserted into the bolt insertion holes of both opposing flaps, and tightened with a nut that is screwed into the threaded rod.Thin steel is used as the flap material and the bolts attached to it. The screw rod integrated with the seat of the connector is inserted through the insertion hole, and the seat is tightened by tightening it, so that the butter materials can be firmly connected to each other and the axes of the joined butter materials are separated from each other. It is possible to sufficiently resist the twisting and bending of, and it is possible to add a rigid joint. In addition, the connection can be done simply by passing the screw rod of the connecting tool through the bolt insertion hole and tightening the nut, and by selecting the bolt insertion hole through which the screw rod is inserted, the length of the connecting flap can be adjusted variously. It is possible to use it, and since it is possible to use it without cutting off the flap material, which is a standard length product,
The wear of the flap material is extremely small and the material can be saved.
It has many advantages.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an embodiment of the device of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is an enlarged front sectional view of the same, FIG. 4 is an exploded front sectional view of the same, and FIG. 6 is a plan view showing another embodiment of the flap material, FIG. 7 is a side sectional view of an apparatus using the flap material, and FIG. 8 is another embodiment of the flap material. FIG. 9 is a side sectional view of an apparatus using the same flap material, FIG. 10 is a plan view showing still another embodiment of the flap material,
FIG. 11 is a side sectional view of an apparatus using the same flap material, and FIG. 12 is a front view showing an example of a mold using the present invention. 1a, 1b ... flap material 2, 2 ', 2 "... bolt insertion hole 3 ... coupling tool, 4 ... screw rod, 5 ... seat body 6 ... nut, 7 ... vertical flap, 10 ... weir board

Claims (1)

[Scope of utility model registration request] 1. A flap material made of grooved steel, in which a large number of bolt insertion holes are arranged at equal intervals along the axis of the flap material. A rod is erected integrally with the seat body to form a connecting member, and a plurality of the connecting members are arranged between the overlapping portions of the joining butter members, and the screw rods of the connecting member are arranged to face each other of the butter members. A flutter material connecting device characterized by being inserted into each of the bolt insertion holes and tightened by a nut screwed to a screw rod.