JPS59466A - Anchor attaching apparatus of concrete mold frame - 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 relates to an anchor device for removably connecting an anchor buried in concrete to a formwork.

In order to save labor and increase efficiency in concrete construction, sliding formwork methods and moving formwork methods have come into widespread use. In these construction methods, as means for fixing the formwork, anchors fW are generally installed in the concrete, and the formwork is supported by the portions of the anchors that protrude from the concrete. That is, the first
As shown in the figure, the end of the buried anchor 1 has a male thread 1a.
At the same time, the end 'Th' is made to protrude longer than the casting surface of the concrete 2, and on the formwork side, a through hole 4 is provided in the weir root 3 and this is fitted into the anchor 1. The formwork is supported by the anchors by tightening with nuts 7 from the outside of the butterfly material 5 through washers 6.

However, since sliding formwork is large in scale, it must be supported using many anchors.
The through holes in the weir plate through which the anchors pass are made small to prevent leakage of concrete, so it is extremely difficult to insert each anchor and each through hole at the same time. Because the anchor and formwork are fastened to the baton material using washers and bolts, the anchor protrudes quite a long way to the outside of the concrete surface.

Therefore, as shown by the chain line in Figure 1, when moving the formwork, it is necessary to hold the formwork in a state where it is separated by a distance greater than the protruding length of the anchor, which makes the equipment complicated and the work complicated. .

The present invention was made in order to improve the runner-up points of the conventional art, and includes a holder that is fixed across a through-hole in a weir plate;
The anchor is equipped with a mounting tube through which the protruding part of the anchor is inserted and whose front end is inserted into the through hole of the weir plate, and the anchor is connected to the weir plate via the mounting pipe and the holder. By making one hole in the plate sufficiently large in diameter, setting the anchor and attaching the formwork to the anchor becomes extremely easy, and by making the protruding length of the anchor short, it is possible to easily set the anchor and attach the formwork to the anchor. It is an object of the present invention to provide an anchor attachment device for a formwork, which can reduce the amount of separation of the frame, simplify the installation, and simplify the work.

Embodiments of the present invention will be described below with reference to FIGS. 2 to 4.

In the figure, reference numeral 3 denotes a weir plate of the formwork, and 5 is a butterwood material, through-holes 4 having a diameter sufficiently larger than that of the anchor 1 are provided at predetermined locations in the weir plate. Reference numeral 8 denotes a holder formed by bending a plate into a U-shape on the side, and its open ends 8a, 8a are brought into contact with the weir plate 3 with the through hole 4 in between, and fixed by welding or the like.

The rear end wall 8cK of this holder 80 is formed with a seat 8d for receiving the lower part of a mounting tube 100, which will be described later, and a connection for fixing the mounting tube 10 is formed at the rear of the pair of side walls 8d, 8d. Bottle hole Be, 8 through which the bottle 9 is inserted
e are provided facing each other.

Reference numeral 10 denotes a mounting tube for connecting the anchor 1 and the weir plate 3 via the holder 8, the inner diameter of which is suitable for inserting the anchor 1, and the weir plate is attached to the front end of the fitting tube. A conical engaging portion 10a to be fitted into the through hole 4, and a flange portion 10b having a diameter larger than the hole 4 are provided next to the conical engaging portion 10a. A stopper 11 for regulating the insertion depth of the anchor 1 is provided in the middle part of the mounting tube 10, and a stopper 11 is provided in the middle part of the attachment tube 10 to regulate the insertion depth of the anchor 1. A tightening bolt 12 for tightening the holder 8 is fitted with a crab screw, and a connecting bottle 9 is inserted in a position nearer to the rear of the holder 8, facing the bottle hole 86.8e of the holder 8. Bottle holes 10c and 10c are provided.

The apparatus of the present invention is constructed as described above, and in construction, it is applied to setting anchors prior to pouring concrete and attaching formwork to existing anchors.

When setting the anchor 1, the end of the anchor 1 is fastened to the formwork, as shown in Fig. 2.

As shown in FIG. 3, the conical portion 10a of the attachment pipe 10 is inserted into the through-hole 4 of the weir plate, and the connecting bottle 9 is inserted into the holder 8 and the respective bottle holes 8e, 8e of the attachment pipe 10.

10e and 10c, and connect both 8, 1 (l), insert the anchor from the front end of the mounting pipe 10, and bring the end surface into contact with the struts 11. Dry and tighten the tightening bolt 12. Tighten the anchor 11r.

After the poured concrete 2 has hardened, the tightening bolt 12 is loosened and the connecting bottle 9 is pulled out.
Pull the mounting tube 10 backward as shown by the solid line arrow in the figure to disengage it from the anchor 1, move it laterally to release the connection between the anchor 1 and the formwork, and then as shown in the solid line arrow in Figure 5. The formwork is then released outward from the anchor 1.

In addition, when attaching the formwork to the anchors 1 buried in this way, first push the weir plate forward in the direction of the dashed line arrow in Figure 5 to fit all the anchors 1 in the through holes 4 of the weir plate, and then move the concrete 2. and then the mounting tube 10f holder 8
The anchor 1 is placed in the mounting tube 10 by moving it in the direction of the dashed line arrow in FIG. Each of the holder 8 and the mounting tube 10.

Insert into the mounting holes Be, 8e + 10c, 10c, and attach the mounting pipe l.
While connecting O and holder 8, tightening bolt 1
2 and tighten it to the anchor bolt 1.

As explained above, the present invention provides a mounting tube that is inserted into the end of an anchor and tightened, and whose front end is fitted into a through hole in a sheath plate, and a mounting tube that is fixed to the sheath plate and can be attached and detached. Since it is equipped with a flexible holder to connect the anchor and the formwork, it is easy to set the anchor and
When attaching formwork to existing anchors, alignment and fastening work between the anchor and the through-hole of the weir plate is reliable and easy, and the length of the part of the anchor protruding from the concrete can be significantly shortened. As a result, when removing or moving the formwork, the amount of lateral movement of the formwork is reduced, which simplifies the equipment and allows for more efficient work. It has the following effects.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing the state of attachment of a conventional anchor and formwork, Fig. 2 is a side sectional view showing an embodiment of the present invention, Fig. 3 is a plan sectional view thereof, and Fig. 4 is FIG. 5 is a plan sectional view showing the attached/detached state of the mounting pipe, and FIG. 5 is a plan sectional view showing the attached/detached state of the formwork. 1... Anchor 2... Concrete 3.
...Weir plate 4...Through hole 8...
...Holder 8d...Socket 9...Connecting pin 10...Mounting tube 10a...Conical part],
Ob...Flame 11...Stopper 12...Tightening bolt Patent applicant Okabe Co., Ltd.

Claims (1)

[Claims] The holder is formed into a U-shape on the side and has an open end fixed to a sheathing plate, and a holder that can be freely tensioned and removed by inserting the end of the anchor to a predetermined depth, and the holder has the above-mentioned A seat is formed to receive the rear part of the mounting pipe, and the mounting pipe is provided with an engaging part at its front end to fit into the through hole of the weir plate, and the holder and the rear parts of the mounting pipe can be attached and detached from each other. An anchor attachment device for concrete formwork, characterized in that it is provided with a connecting means.