JPH0578617B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a self-lifting formwork device which is applied in particular to vertical surfaces, such as for example dam embankment walls.

[Prior art] Moving the formwork plays an important role in concrete pouring work, but conventionally in most cases the formwork is removed from the concrete pouring surface by input, and moved for the next pouring. Currently, it is being moved and set. If the formwork is set by hand in this way, although the work can be done carefully, it is inefficient and the labor costs are high, making it impractical today. Furthermore, especially in the case of constructing a dam embankment, work at heights is dangerous and manual work must be avoided as much as possible. Particularly when working at heights, it is necessary to devise construction methods to make the work light. Therefore, in Japanese Patent Application No. 60-196032, the present applicant has proposed a formwork self-lifting method that can move the concrete frame with minimal manual labor when constructing a dam dam using concrete, for example. are doing.

However, in the equipment that implements this method, temporary fixing of members that are temporarily fixed to the concrete pouring surface, such as slide anchor frames and formwork slide guides, to the concrete pouring surface is difficult. A recessed hole is formed, a Siebold having a urethane portion partially provided is inserted into the recessed hole, and the rod is pulled out to cause the anchor portion to bulge out and be locked in the small diameter portion of the recessed hole. This is because forming the recessed hole is troublesome and Siebold has a complicated structure.
Further, the locking work, that is, the temporary fixing work is troublesome. Furthermore, when aligning the face plate of the formwork with the concrete pouring surface, the alignment is dependent on the positioning of the formwork slide guide, resulting in high precision, unevenness, and inaccuracy.

Various self-lifting formwork devices are known, and are disclosed, for example, in Japanese Patent Application Laid-Open No. 60-43570. However, as mentioned above, the locking work with the Siebold is troublesome and the positioning of the slide guide of the formwork is troublesome. Further, Japanese Patent Publication No. 49-7254 is provided with an anchor frame that can be freely engaged and detached from one side, but it cannot be applied to formwork that can be lifted up by itself.

[Problems to be Solved] Therefore, an object of the present invention is to facilitate the temporary fixing work to the concrete pouring surface, to simplify the structure of the Siebold, and to align the formwork face plate to the concrete pouring surface with high precision. To provide self-elevating formwork equipment that can.

[Means for Solving the Problems] According to the present invention, in a self-elevating formwork device applied to a vertical surface, it can be freely engaged with and detached from one side from a Siebold 5 erected on a concrete pouring surface, and the concrete can be placed on the concrete pouring surface. Anchor frame 1 temporarily fixed to a surface
, a slide frame 10 slidably supported by the anchor frame 1 via a hydraulic cylinder 11 , a self-lifting mast 20 connected to the slide frame 10 via a parallel link 21 , and a self-lifting mast 20 connected to the slide frame 10 via a parallel link 21 . and an attached formwork 30,
The anchor frame 1 is composed of a rectangular frame body, and a bottom plate 3 with a thick vertical end 2 is formed with a V-shaped notch 4 in which the Siebold 5 is accommodated, and the Siebold 5 is fitted with a nut 6 for temporary fixing. are screwed together, one end of a hydraulic cylinder 22 is pivotally connected to both sides of the self-lifting mast 20, the other end of the hydraulic cylinder 22 is pivotally connected to the slide frame 10, and the formwork 3
0 is composed of a connecting beam part 31 and a face plate part 40,
The connecting girder part 31 is formed into a long frame body in the direction orthogonal to the self-lifting mast 20, and a notch similar to the cutout part 4 is formed in the vertical end thickness 32 of the connecting girder part 31. A hydraulic cylinder 34 is erected on the horizontal end 33 corresponding to the connecting portion between the mast 20 and the formwork 30, and a fall prevention roller 35 is provided at the end of the piston rod.
1, a horizontal end 42 and a face plate 43, and a vertical end 4
The base 41a of 1 is pivotally attached to the front end of the connecting beam part 31, and wedges 45 and 46 are provided to adjust the attachment angle with the connecting beam part 31, and a turnbuckle is provided between the vertical end thick 41 and the vertical end thick 36. 47 are provided,
A mounting portion for a dummy bolt 48, which is the same as the Siebold, is provided on the line connecting the Siebolds 5 on the face plate 43, and the pitch between the dummy bolt 48 and the adjacent Siebold 5 is equal to the pitch between each Siebold 5. ing.

[Description of function and effect] Therefore, the anchor frame and the connecting girder engage with the Siebold from the upper side of the inclined surface to easily temporarily fix the Siebold on the concrete pouring surface, and also move to the upper side of the Siebold to secure the Siebold. Temporary fixation can be easily released by detaching from the base. Furthermore, by tilting the face plate, it can be aligned with the concrete pouring surface with a predetermined high precision without being affected by the temporary fixing accuracy of the connecting girder, and as a result, a smooth and accurate concrete pouring surface can be obtained.

Further, the notch can be easily engaged with the V-shaped Siebold, and the operation is easy as it is only necessary to screw the nut into the notch. In addition, a roller is installed at the front lower part of the connecting girder section using a hydraulic cylinder so that it can freely move in and out of the concrete pouring surface and comes into contact with the concrete pouring surface, so when the self-lifting mast lifts the formwork, it It can prevent you from falling.

[Examples] Examples of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 8, the flexible formwork apparatus according to the present invention is schematically composed of an anchor frame 1, a slide frame 10, a self-lifting mast 20, and a formwork 30.

The anchor frame 1 is a planar rectangular frame body, and the bottom plate 3 of the vertical end 2 has two notches 4 on the left and right sides, the details of which are shown in FIGS. 4 and 5. ing. This notch 4 opens in a V-shape in the direction opposite to the direction in which the formwork is set, that is, toward the bottom of the dam, and the width of the inner part is the width of the Siebold 5 fixed on the concrete pouring surface A. It is sized to fit. Therefore, when the nut is loosened and the vertical end thick 2 is slid by a distance B in the direction of the arrow, the notch 4 of the vertical end thick 2 avoids the Siebold 5, and the anchor frame 1 is moved in a direction perpendicular to the concrete pouring surface A. It is now possible to lift.

A slide frame 10 having a planar rectangular frame body is slidably supported on the anchor frame 1 via a hydraulic cylinder 11 which is a self-lifting device. The piston rod 12 of the hydraulic cylinder 11 is connected to the lower end of the anchor frame 1, and the cylinder 13 is connected to the upper part of the slide frame 10, so that when the hydraulic cylinder 11 is extended, the slide frame 10 is slid upward. (See Figure 2).

As shown in FIG. 8, the self-lifting mast 20 has a parallel link mechanism formed by the slide frame 10, the self-lifting mast 20, and a pair of links 21, 21. The self-lifting mast 20 is formed into a rectangular frame body, and one end 22a of hydraulic cylinders 22, 22, which are mast release devices, is pivotally connected to both sides, and the other end is pivotally connected to the slide frame 10 at a point 22b. ing. Therefore, when the hydraulic cylinder 22 is extended, the self-lifting mast 20 moves to the slide frame 10.
It is designed to be lifted upward parallel to the

As shown in FIGS. 1 to 3, the formwork 30 is roughly composed of a connecting girder section 31 and a face plate section 40. As shown in FIGS. The connecting girder part 31 is formed into a long frame body in the direction orthogonal to the self-lifting mast 20, and is connected to the self-lifting mast 20.
and a beam 2 whose one end is connected to a self-lifting mast 20
3, 23 is fixedly installed at the other end. Two notches 4 similar to the vertical end thicknesses 2 of the anchor frame 1 are formed in each of the vertical end thicknesses 32, 32, . . . of the connecting girder portion 31. In addition, self-lifting mast 20
The front lower horizontal edge 33 corresponding to the connection part with the sixth
As shown in the figure, hydraulic cylinders 34, 34 are erected, and a fall prevention roller 35 is provided at the end of the piston rod so that it can freely move in and out of the concrete pouring surface by the expansion and contraction of the hydraulic cylinders 34.

The face plate part 40 consists of a vertical end thick 41, a horizontal end thick 42, and a face plate 43 stretched over a frame formed by both end thicks, and as shown in FIG.
The base 41 is pivotally connected to the front end of the connecting beam 31. That is, the base 41a holds the lower end of the vertical end 36 of the connecting girder part 31, is pivotally attached by the mounting bolt 44, and is attached to the connecting girder part 31 by the wedges 45, 46.
and the mounting angle can be adjusted. Moreover, turnbuckles 47, 47... are stretched between the middle of the vertical end thick 41 and the upper part of the vertical end thick 36, and substantially on the line connecting the Siebolds 5, 5... of the face plate 43, A mounting portion for a dummy bolt 48, which is the same as that of the Siebold 5, is provided. The pitch between this dummy bolt 48 and the adjacent Siebold 5 is set equal to the pitch C between each Siebold 5.

Next, the working process will be explained mainly with reference to FIGS. 8 to 16.

In Figure 8, 5 batches from the bottom (D1 or
When placing the 6th batch of concrete after D5) of concrete has been poured,
Loosen the nuts 6 and remove the dummy bolts 48 from the face plate 43.
In other words, leave the dummy bolt 48 as the Siebold 5 on the concrete placement surface A, and loosen the nut 6 of the Siebold 5 of the connecting girder part 31.

Next, the wedges 45 and 46 are removed, the turnbuckle 47 is retracted and tilted with the face plate 43, and the mold is removed from the concrete pouring surface A (FIG. 9).

Next, the hydraulic cylinder 11 is extended and the connecting girder 31 is slid by a distance B (FIG. 5) via the slide frame 10 and the self-lifting mast 20 to avoid the Siebold 5 from the notch 4 of the vertical end thick 32. (Figure 10).

Next, the hydraulic cylinder 22 is extended to lift the self-lifting mast 20 to remove the formwork 30 from the concrete placement surface A, and the hydraulic cylinder 34
(Fig. 6) to protrude the collapse prevention roller 35 and bring it into contact with the concrete pouring surface A, and formwork 3
0 from falling over (Figure 11).

Next, the hydraulic cylinder 11 is extended, and the formwork 30 is moved through the slide frame 10 and self-lifting mast 20.
Slide the face plate part 40 of 1 batch D6, that is, distance B longer than pitch C (first
Figure 2).

Next, the hydraulic cylinders 22 and 34 are contracted to drop the Siebold 5 into the notch 4 of the vertical end thick 32 of the connecting girder section 31, and then the hydraulic cylinder 11 is contracted to move the vertical end thick 32 to the Siebold 5 side. After sliding the distance B and engaging the notch 4 with the Siebold 5, tighten the nut 6 to temporarily fix it. Next, dummy bolts 48 are set on the face plate 43, the turnbuckles 47 are further extended, and the inclination of the face plate 43 is adjusted using the wedges 45, 46 to align the face plate 43 with the concrete pouring surface A (FIG. 13).

Next, the nut 6 of the Siebold 5 of the anchor frame 1 is retracted, the hydraulic cylinder 11 is retracted, and the Siebold 5 is slid upward by a distance B to avoid the Siebold 5 from the notch 4 (FIG. 14).

Next, the hydraulic cylinder 22 is contracted to lift the anchor frame 1, the hydraulic cylinder 11 is contracted to slide the anchor frame 1 upward, and the Siebold 5 is positioned at a position where it can be dropped into the notch 4 of the vertical end thickness 2. Decide (Figure 15).

Next, the hydraulic cylinder 22 is extended to lower the anchor frame 1, and the Siebold 5 is dropped into the notch 4, and then the hydraulic cylinder 11 is extended to move the anchor frame 1 toward the Siebold 5 by a distance B.
After sliding the notch 4 into engagement, tighten and fix the nut 6 to complete the work (Fig. 16).

[Effects of the Invention] As explained above, according to the present invention, the temporary fixing work of the connecting girder part 31 and the anchor frame 1 to the concrete casting surface A is performed by inserting the notch part 4 of each vertical end into the Siebold 5. It is extremely easy to do this by simply engaging from the upper side and tightening the nut 6 just in case. Further, the alignment of the face plate 43 to the concrete casting surface A can be finely adjusted using the turnbuckle 47 and the wedges 45 and 46 to achieve high precision.

[Brief explanation of drawings]

1, 2, and 3 are front views showing each process by the apparatus of the present invention, FIG. 4 is a side sectional view showing a Siebold fixing part of an embodiment of the present invention, and FIG. Figure 4 is a view taken along the - line arrow, Figure 6 is a drawing showing the area around the fall prevention roller, Figure 7 is a perspective view showing the pivoting structure of the face plate part to the connecting girder part, and Figure 8
9, FIG. 10, FIG. 11, FIG. 12, FIG. 13, FIG. 14, FIG. 15, and FIG. 16 are side views showing each step by the apparatus of the present invention. 1... Anchor frame, 5... Siebold,
DESCRIPTION OF SYMBOLS 10... Slide frame, 20... Self-lifting mast, 21... Link, 30... Formwork, 31... Connecting girder part, 40... Face plate part, A... Concrete pouring surface.

Claims (1)

[Claims] 1. In self-lifting formwork equipment applied to vertical surfaces,
An anchor frame 1 that can be freely engaged with and detached from one side of a Siebold 5 erected on a concrete pouring surface and temporarily fixed to the concrete pouring surface, and is slidably supported on the anchor frame 1 via a hydraulic cylinder 11. a slide frame 10, a self-lifting mast 20 connected to the slide frame 10 via a parallel link 21, and a formwork 30 attached to the self-lifting mast 20. A V-shaped notch 4 for housing the Siebold 5 is formed in the bottom plate 3 of the vertical end thick 2, and a temporary fixing nut 6 is screwed into the Siebold 5. ascending mast 20
One end of a hydraulic cylinder 22 is pivotally mounted on both sides of the
The other end of the hydraulic cylinder 22 is connected to the slide frame 10
The formwork 30 is pivotally connected to the connecting girder part 31.
and a face plate portion 40, the connecting girder portion 31 is formed into a frame body that is long in the direction orthogonal to the self-lifting mast 20, and the vertical end thickness 32 of the connecting girder portion 31 is provided with a notch portion 4 similar to the above-mentioned notch portion 4. A notch is formed and a hydraulic cylinder 34 is installed upright on the horizontal end 33 corresponding to the connection between the self-lifting mast 20 and the formwork 30, and a fall prevention roller 35 is provided at the end of the piston rod. The face plate part 40 consists of a vertical end thick 41, a horizontal end thick 42, and a face plate 43, and the base 41a of the vertical end 41 is pivotally attached to the front end of the connecting girder part 31, and the attachment angle with the connecting girder part 31 is adjusted. A turnbuckle 47 is provided between the vertical end thick 41 and the vertical end thick 36, and a dummy bolt 48, which is the same as the Siebold, is attached on the line connecting the Siebolds 5 of the face plate 43. A self-lifting formwork apparatus characterized in that the pitch between the dummy bolts 48 and the adjacent Siebolds 5 is equal to the pitch between each Siebold 5.