JPS60132704A - Connector for formwork - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] ゛The present invention i = = ``'i =''''''yin〛, for use in enclosing concrete structures such as box culverts or retaining walls with refractive diagnosis in the shape of a box. This is a dispute regarding the device that connects the completed formwork to the inner formwork device used.

In the mold frame decoration of concrete M' structures, in recent years, from the point of view of increasing efficiency and saving labor, we have been using FJ with as large a block as possible to make the formwork □. It has been handled in . Various proposals have been made in the past for internal formwork devices used in the construction of enclosing concrete structures such as sashes to be able to handle six formworks on each side as a single unit. However, this type of formwork equipment requires a connection structure that can withstand @E etc. caused by pouring concrete between each formwork.

However, it is necessary to be able to easily demold each formwork, but conventional equipment has been insufficient in both cases.

The formwork connecting device of the present invention was developed in view of the above-mentioned conventional situation, and includes brackets attached to the inside of a pair of plates that are attached to the edges of the formworks to be joined together. are connected to each other by a connecting rod so that they can be moved toward and away from each other, and the connecting rod is provided with a wedge formwork that can be freely inserted and removed between the opposing surfaces of the pair of plates, thereby making it possible to connect the formworks to each other. The connection is strong, and the connected formwork can be easily separated from each other by simply inserting and removing the wedge formwork. It is an object of the present invention to provide a formwork connecting device that can have an integrated configuration and improve labor-saving and efficiency of formwork construction.

Embodiments of the present invention will be described and explained below with reference to the drawings.

In Figures 1 and 2, 1, 1 is the formwork A to be joined;
It is a plate that can be attached to the edge in the height direction of B by an appropriate means, and brackets 2.2 are protruded from a plurality of locations corresponding to each other on the inside of B, and pins 3 are attached to the protruding ends of the brackets 2.2.゜3 is provided. A connecting rod 55 is installed between both brackets 2.2, which has long holes 4, 4 in the longitudinal direction that engage with the bins 3 at both ends thereof, and both brackets 2.2 have long holes 4. 4 and the bottle 3.3. Further, in the center of the connecting rod 5, there is a reciprocating jack 7 having a wedge-shaped frame 6 with the outer surface sandwiched in between, which is inserted between the opposing surfaces of both plates 1.
It is provided so as to be movable and adjustable in the thickness direction of the plate 1.1, that is, in the inner and outer directions.

The advancing/retracting jack 7 has a mechanism similar to that of a conventionally known screw type jack, with a screw rod 9 rotatably provided in a vertically long box 8, and a piece 10 screwed into the screw rod 9 protruding from the screw rod 9. A bottle 11 projects outward from a guide slot 12 provided in the longitudinal direction of the box 8. Then, the protruding pin 11 is connected to the connecting rod 5, and the forward/retractable jack 7 is installed. Therefore, when the threaded rod 9 is rotated, the pin 11 is moved into the guide slot 12 of the box 9 via the piece 1O, but since the pin 11 is connected to the connecting rod 5, The forward/backward jack 7 is moved in the direction of the arrow with respect to the connecting rod 5. When the forward/backward jack 7 is advanced so that the outer surface of the wedge formwork 6 is at 1lo- with the outer surface of the plate 1, the pin '3 of the bracket 2' is positioned at the outer end of the long hole 4 of the connecting rod. The dimensions of each part are set.

The present invention is constructed as described above, and includes a formwork A that connects a pair of plates 1, 1, respectively.

B, but at that time, the outer surface of plate 1.1! Formwork ^9. It is important to attach it closely to the outside of B, and the means of attachment is as shown in the figure, but it is best to fix it to the formwork's weir plate or buffing material using appropriate fittings. As a result, both formworks A and B are connected through the device of the present invention.

The formwork shaping worker rotates the guard rod 9.

If the forward/backward jack 7 is moved forward and the wedge formwork 6 is placed between both plates 1, 1, the wedge formwork 6 will be formed as shown in Figure 1.
Outside! The outer surface of the plate tool 1 and the force 5 will be held in place. After the cast concrete concrete 9 has hardened, in order to peel off the formwork, move the rod 9 in the opposite direction [! Move the forward/backward jack 7 backward as shown in Figure 3, and push the wedge-shaped foot 6 between the two sides. Sir plate 1 by 111 tiles of wedge formwork 6
．． , 1 IIC gap 1 轡, 1 , , ( will be generated, so apply blows etc. to 777 and 2.2 to bring them together to the ears, or pull V3 inward as appropriate to the formwork. If this is done, formworks A and B will come together and separate from the concrete C as shown in Figure 4.In the case of an encircling formwork, the overall alignment can be achieved by the way the combined formwork comes together. Since it can be moved to the next construction site while remaining connected as a whole, the complicated labor of assembling and disassembling the formwork each time it is to be constructed can be eliminated.

Figures 5 and 6 each show an embodiment of an encircling formwork in which four formworks A', B', A', and B' are integrally connected using one device of the present invention. In the one shown in FIG. 5, the device of the present invention is arranged at the four corners of the encircling shape.
In addition, the one in Figure 6 has four formworks formed in a five-figure shape.
, r , , x, , 81 m long, the device of the present invention is located on the side or approximately in the center of the encircling shape. Fifth
In both Figures and Figures 6 and 9, the connection strength is high and the rigidity of the surrounding formwork is high when the rust formwork 6 is inserted between the plates 1 and 1 as shown in the figure. It is enough.

Furthermore, when the wedge formwork 6 of the device of the present invention is removed from between the plates 1.1, the connected formworks come together and peel off from the concrete, and the enclosing formwork as a whole becomes net-shaped. This means that it can be transported to the next construction site or for removal in its slender state.

The device of the present invention can be used not only for connecting each formwork in an encircling formwork as described above, but also for use in, for example, U-shaped internal formwork and arch-shaped formwork for box culverts, and even - It can also be widely applied as a connecting device for general formwork, etc.

As explained above, the device of the present invention has brackets protruding from the inside of a pair of plates attached to each of the formworks to be connected, and the brackets are connected to each other so as to be able to move toward and away from each other by connecting rods. In addition, a wedge formwork that can be freely inserted and removed between the facing surfaces of a pair of plates is used, so the connection between the formworks is strong, and the operation of moving the formworks into and out of each other is simple. It is reliable and has great stability when shaping the formwork, and various operations such as shaping, peeling, and netting of the formwork can be carried out efficiently, and in particular, the integral structure of the enclosing formwork is It has excellent effects as a formwork connection device for.

[Brief explanation of drawings]

Fig. 1 is a side sectional view showing one embodiment of the device of the present invention, Fig. 2 is a rear view of the same, and Fig. 3 is a side sectional view illustrating the state in which the wedge formwork has been removed before production of the invention. , Fig. 4 is a side cross-sectional view showing the plates put together, Fig. 5 is a plan view showing an example of the device of the present invention used in an enclosing formwork, and Fig. 6 is a plan view showing an example of the same side. This is a diagram. A, A', A'', B, B', By...Formwork I
...Plate 2...Bracket 3...
... Bin 4 ... Long hole 5 ... Connecting rod 6 ... Wedge formwork 7 ... Patent issued for advance/retreat jack. Mr. Okabe Co., Ltd. (1 other person) Figure 1 Figure 3 Figure 2 Figure 1

Claims (1)

[Claims] A pair of plates that are attached to the edges of the formwork that are to be connected to each other has a pad protruding from the inside of each plate, and the plates are connected to each other by a connecting rod so that they can be moved toward and away from each other. The mold connecting device is characterized in that a multi-corrosion formwork that can be freely inserted and removed between the opposing surfaces of the pair of plates is provided.