JP2625601B2 - Siebold for self-elevating formwork equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a concrete dam,
The present invention relates to a self-elevating formwork apparatus used when constructing other large concrete structures, and more particularly to a detachable engagement structure of sea bolts of a formwork for concrete placement.

[0002]

2. Description of the Related Art Conventionally, various formwork devices have been developed in order to save labor and work safety when constructing the above-mentioned mass concrete structure. In particular, ingenuity has been devised so that the formwork itself can be raised. For example, there are the following.

[0003] As shown in FIGS. 10 and 11, there is provided a middle mold 1 attached to a plurality of mold supporting frames 3, 4 and one side mold 2 sandwiching the middle mold 1 from both sides. A beam 5 for swingably supporting the frame supporting frame 3 of the middle frame 1 is provided above the side frame 2, and the beam 5 is provided between both ends of the beam 5 and the side frame 2. There is a configuration in which a jack 6 for alternately ascending the middle mold and the side mold is attached, and the sea bolt 7 can be detachably attached to each of the mold support frames 3 and 4.

[0004] In the above-described formwork apparatus, the tip of a sea bolt that is attached to the form support frame so as to be able to move in and out is fixed to an anchor bolt embedded in the concrete casting section. Then, after solidification of the concrete cast in the previous concrete casting section, the sea bolts inserted into the form support frame of the medium formwork are removed.

After that, the jack on the side form is extended,
The middle frame connected to the beam is automatically raised to a predetermined position. Furthermore, seabolts are inserted into the formwork for concrete casting into the formwork support frame of the middle formwork.

[0006] Then, the sea bolts inserted into the form supporting frame of the side form are removed. Subsequently, the jack of the side form is contracted, and the side form is raised to the position of the middle form.

[0007] Then, the sea bolts are inserted into the form supporting frame of the side form inside the form where concrete is cast. In this way, the middle mold and the side mold are aligned at the same height, and the seabolts are inserted into the inside of each mold. Then, concrete is cast inside each of the middle mold and the side mold, and the tip of the sea bolt is embedded in the concrete. As described above, there is a method in which the middle form and the side form are alternately raised to perform mass concrete casting of a dam or the like.

[0008]

However, in the above-described automatic formwork apparatus, the engagement structure between the anchor bolt and the sea bolt buried in the side wall of the cast concrete is formed by a screw or a nut. It may be due to manual work such as tightening things, but there is a problem that it is dangerous and inefficient work efficiency because it is a high place work done on the work table attached to the formwork. However, this is also a complicated mechanism using a hydraulic cylinder, a lock mechanism for opening and closing the pawl, and the like, and has a disadvantage that the cost increases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has a simple structure for engaging and disengaging sea bolts provided on a formwork and anchor bolts embedded in concrete. The purpose is to provide.

[0010]

The gist of the present invention to solve the above problems and achieve the above object is to support a concrete casting formwork and to engage an anchor bolt embedded in a side wall of concrete. In a self-elevating formwork device formed by a form support having a seabolt to be formed and an elevating device for lifting the formwork support, the seabolt of the formwork support is provided at a rear end of the anchor bolt. The engaging claw at the tip end of the seabolt expands and engages with the engaging hole provided in the peripheral wall, and when the seabolt body is further pushed in, the engaging claw is narrowed by the inner wall of the anchor bolt, and the seabolt body is removed. The present invention resides in a seabolt of a self-elevating formwork device having an engagement structure in which an engagement with an anchor bolt is released by being pulled out after being rotated about an axis.

[0011]

According to the self-elevating formwork device of the present invention, the seabolt provided on the formwork support is moved forward and backward by the drive source such as a motor or a cylinder operated by air or hydraulic pressure. Since the engagement structure is detachable by the rotation operation, the distal end portion of the sea bolt and the anchor bolt can be automatically attached and detached.

[0012]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a self-elevating mold apparatus according to the present invention, and FIG. 2 is a perspective view of the same. In the drawing, reference numeral 10 is a self-elevating mold device, 11 is a mold support, 12 is a support frame, 13 is an elevating device, 14 is a telescopic mechanism of the elevating device, 15 is a height fine adjustment device, 16 is a sea bolt, Reference numeral 17 denotes an anchor bolt.

The self-elevating formwork apparatus 10 generally includes a formwork support 11 having a formwork 11a for placing concrete, and a support frame 12 swingable with respect to the formwork support 11.
And an elevating device 13 that raises the form support 11 via a support frame 12.

The frame support 11 is a frame assembled from a U-shaped steel thick end, a crosspiece and a reinforcing member. The frame 11a is connected to the frame via a support beam 11b.
Has been fixed.

A guide roller 11c for moving the concrete side wall surface and a jack 11 for projecting and retracting the guide roller toward the concrete side wall 30b are provided on the frame body.
d is provided, and a peeling jack 11e for separating the frame 11a of the frame from the concrete side wall surface is provided.

Further, the frame of the form support 11 has an anchor bolt 1 embedded in a side wall 30b made of concrete.
7 is provided with a seabolt 16 whose tip is detachably engaged.

The sea bolt 16 is shown in FIG.
As shown in (b), the whole is a rod-shaped body with a long and narrow circular section, and a rectangular through hole 16d is provided at the tip. The through-hole 16d is provided with an engaging claw 16a opposed thereto, and the engaging claw 16a, 16a is structured to be expanded outward by a compression spring 16b around a fulcrum 16c as a rotation center.

The portion of the engaging claw 16a protruding from the outer periphery of the seabolt main body is dropped into the engaging hole 17a of the anchor bolt 17, and comes into contact with the side wall of the engaging hole 17a to be locked.

Next, the support frame 12 is pin-coupled 21 at a lower portion of the support frame 12 and an upper portion of the form support 11, and is swingable. Further, there is also provided a lock device for locking the swing of the support frame 12 by engaging a claw or the like (not shown).

As shown in FIGS. 1 and 2, the elevating device 13 is composed of a pair of telescoping mechanisms 14, 14, and the lower frame 14a is connected to the hydraulic jack 14b when the mold 11a is raised or when concrete is poured. Is extended and contracted in the vertical direction by the extension and contraction of the rod 14c, and the pair of extension and contraction mechanism parts 14 and 14
2 is rotated by about 90 ° around the center 2 so as to overlap each other on the form support 11 side.

The self-elevating form device 1 thus formed
FIGS. 3 to 9 show how to use the No. 0 bolt 16.
This will be described with reference to FIG.

The sea bolt 16 of the form support 11 is advanced toward the anchor bolt 17 by driving means such as a motor 29 or a cylinder (not shown), and the tip of the sea bolt 16 is inserted into the anchor bolt 17 (see FIG. 1). 4 to 5), an engaging claw 16 at the tip of the seabolt 16 is provided in an engaging hole 17a formed in a peripheral wall at a rear end of the anchor bolt 17.
a is expanded and engaged by the compression spring 16b (see FIG. 6).

Further, when the motor 29 is operated and the sea bolt 16 is pushed inward, the engaging claw 16a is narrowed by the inner wall 17b of the anchor bolt 17 (see FIG. 7). Then, the sea bolt 16 is rotated around the axis thereof by the motor 29 (see FIG. 8) and then pulled out, whereby the engagement between the sea bolt 16 and the anchor bolt 17 is released (see FIG. 9). In this manner, the sea bolt 16 is automatically engaged with and released from the anchor bolt 17 by the operation of the motor 29.

Thus, the self-elevating formwork apparatus 10 of the present invention
The sea bolt 16 for supporting the form support 11 on the concrete side wall 30b can also be automatically attached to and detached from the anchor bolt 17.

[0025]

As described above, according to the seabolt of the self-elevating formwork apparatus of the present invention, the seam of the seam bolt is expanded and engaged with the seam of the seam bolt. The engaging claw is narrowed by the inner wall of the anchor bolt when it is pushed in, and the engagement with the anchor bolt is released by rotating and pulling out the seabolt body about its axis. Accordingly, the driving of a driving source such as a motor makes it possible to automatically engage and release the sea bolts of the form support with the anchor bolts embedded in concrete.

[Brief description of the drawings]

FIG. 1 is a side view of a self-elevating formwork device according to the present invention.

FIG. 2 is a perspective view schematically showing a self-elevating mold device.

FIGS. 3A and 3B are explanatory views illustrating engagement between a sea bolt and an anchor bolt, wherein FIG. 3A is a front view and FIG. 3B is a plan view.

FIG. 4 is an explanatory view illustrating a state of engagement between a sea bolt and an anchor bolt.

FIG. 5 is an explanatory diagram illustrating engagement between a sea bolt and an anchor bolt.

FIG. 6 is an explanatory diagram illustrating engagement between a sea bolt and an anchor bolt.

FIG. 7 is an explanatory view illustrating engagement between a sea bolt and an anchor bolt.

FIG. 8 is an explanatory diagram illustrating engagement between a sea bolt and an anchor bolt.

FIG. 9 is an explanatory diagram illustrating engagement between a sea bolt and an anchor bolt.

FIG. 10 is a partial front view of a self-elevating formwork device according to a conventional example.

FIG. 11 is a front view of a self-elevating mold device according to a conventional example.

[Explanation of symbols]

Reference Signs List 10 self-elevating formwork device, 11 formwork support, 12 support frame, 13 elevating device, 14 telescopic mechanism of elevating device, 15 height fine adjustment device, 16 seabolt, 17
Anchor bolt.

Claims (1)

(57) [Claims] 1. A form support having a sea bolt engaged with an anchor bolt embedded in a side wall of concrete for supporting a form for concrete casting, and an elevating device for raising the form support In the self-elevating formwork device formed by the above, the seam bolt of the form supporter is configured such that the engaging claw at the seam end of the seam bolt is expanded into an engaging hole provided in a peripheral wall of a rear end portion of the anchor bolt. When the seabolt body is further pushed in, the engaging claw is narrowed by the inner wall of the anchor bolt, and the seam bolt body is rotated around its axis and then pulled out to disengage the anchor bolt. A seabolt of a self-elevating formwork device characterized by having a structure.