JPH05311874A - Horizontal extension/contraction device for mold - Google Patents

Abstract

PURPOSE:To simplify constitution by forming a horizontaextension/contractible member on a link member and allowing the link member to tilt for extension and contraction, accompanied with the vertical movement of a vertical extension/contractible member for connecting a main frame and a lower part frame. CONSTITUTION:A lower part frame 4 is fixing-supported on the peripheral wall of a bottom board part made of concrete, and a mold frame panel 1 is supported through a vertical extension/contractible member 3 on the lower part frame 4. Then, iron reinforcements are arranged on the peripheral wall of the bottom board part, and the first stage concrete wall 7 is laid, and after curing, a link member is tilted by the vertical extension/contracting member 3, and a mold frame panel 1 is contracted, and mold demounting is carried out. After the mold demounting, the device is raised to the next concrete laying position through the vertical extension/contractible member 3, and after the rising, the vertical extension/contracting member 3 is lowered to return the link member to the horizontal state, and the mold frame is spread. Accordingly, the need of a reinforcing member at an installation part is obviated, and the reduction of weight is enabled, and extension/contraction is carried out simultaneously with the vertical movement of the vertical extension and contractible member 3, and operation can be simplified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal expanding / contracting device for a formwork in a formwork apparatus suitable for manufacturing concrete caissons, concrete structures such as buildings, chimneys, towers and the like.

[0002]

2. Description of the Related Art An example of a conventional horizontal expansion / contraction device for a form is shown in FIG.
4 shows. The figure shows a formwork apparatus used for manufacturing a concrete caisson, which is a formwork panel 102 in which four panel pieces 101 each having two wall portions forming a right angle with each other are combined to form a substantially square horizontal section. And a main frame 104 connected to the inside of the frame panel 102 via a horizontal elastic member 103, and a lower frame (not shown) connected to the lower portion of the main frame 104 via a vertical elastic member 105. There is. Reference numeral 106 in the figure denotes a telescopic guide member.

[0003]

The conventional horizontal expansion / contraction member for a mold as described above requires a reinforcing member or the like at its mounting portion because it is formed of a hydraulic cylinder or a screw jack. Heavy structure makes it expensive. The present invention was developed to address such problems, and an object of the present invention is to form a horizontal elastic member into a link member that can be easily attached.

[0004]

The structure of the present invention for achieving the above object will be described with reference to FIGS. 1 to 12 corresponding to the embodiments. The present invention is a formwork conforming to the dimensions of a concrete structure. A mold including a panel 1, a main frame 2 connected to the inside of the form panel 1 via a horizontal elastic member 5, and a lower frame 4 connected to a lower portion of the main frame 2 via a vertical elastic member 3. In the frame horizontal expansion / contraction device, the horizontal expansion / contraction member 5 is formed on a link member 5c that tilts as the vertical expansion / contraction member 3 moves vertically.

[0005]

According to the present invention, after the concrete is poured and cured along the formwork panel by the above-mentioned means, the link member is inclined and the formwork panel is contracted and demolded by extending the upper and lower elastic members upward. After removing the mold, the formwork panel is raised to the next concrete pouring position through the vertical stretchable member, and after the rise, the link member returns to the horizontal position as the vertical stretchable member is lowered downward. The frame is enlarged.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A horizontal expansion / contraction device for a formwork as an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a schematic structure of a formwork device equipped with the present invention, and FIG. 1 is a plan view of an essential part as viewed in the direction of arrow A in FIG. 1, FIG. 3 is a cross-sectional view in the direction of arrow BB in FIG. 2, FIG.
And 11 are sectional views taken along the line BB in FIG. 2 showing the operating condition of the present invention, and FIGS. 6, 8, 10 and 12 are views taken along the line C-C in FIG. 2 showing the usage of the fixed support bolts of the form panel. Sectional view, Figure 1
3 (a) to (f) are explanatory views showing a process of using the present invention.

As shown in FIGS. 1 to 12, there is provided a formwork panel 1 in which four panel pieces 1a having two wall portions a forming a right angle to each other are combined to form a substantially square horizontal section. Inside the formwork panel 1, a pair of upper and lower main frames 2 are arranged. And as shown in FIG.
In order to perform expansion and contraction of the formwork panel 1 within the range of expansion and contraction amount δ, as shown in FIG. 2, the wall portions a and a that are adjacent to each other and form one side of the square are a respective leading edge a. 'And a'are superposed so as to be slidable, a stopper 6a is provided inside the telescopic guide member 6, and the panel piece 1 is provided along the diagonal line of the square.
The horizontal expansion / contraction member 5 of the formwork panel 1 of the present invention is mounted between a and the main frame 2 and is composed of a link member including an eye plate 5a, a pin 5b, and a link 5c.

Further, a telescopic type guide member 6 which performs an extension / contraction guide function in parallel with the extension / contraction direction of the horizontal extension / contraction member 5,
It is mounted between the panel piece 1 a and the main frame 2 on both sides of the horizontal elastic member 5. Mainframe 2
A lower frame 4 is disposed below the lower frame 4, and an up-and-down elastic member 3 formed of a hydraulic jack or a screw jack is provided between the main frame 2 and the lower frame 4.

Further, as shown in FIGS. 4, 6, 8, 10 and 12, the formwork panel 1 and the lower frame 4 include:
A bolt 8 for fitting and fixing in a hole 9 formed in the inner wall of the concrete wall 7 is provided so as to be screwed. As shown in FIGS. 10 and 12, the pedestal 10
Is attached to the concrete wall 7 with bolts 8 and the pedestal 10 supports the formwork panel 1.

With the above-described structure, when the formwork apparatus equipped with the present invention is used, for example, when manufacturing a caisson made of concrete, the formwork panel 1 serves as an inner formwork.
It is operated so as to be sequentially lifted as shown in (a) to (f). That is, as shown in FIG. 13 (a), the lower frame 4 is fixedly supported on the inner surface of the peripheral wall of the concrete bottom plate portion k by the bolts 8, and the form frame is provided on the lower frame 4 via the contracted vertical elastic member 3. The panel 1 is supported. Then, the reinforcing bars s are arranged on the peripheral wall of the bottom plate portion k, and the reinforcing bars are provided between the mold panel 1 as the inner mold and the outer mold not shown which is arranged along the outer periphery thereof at a distance. The first-stage concrete wall w1 is placed so as to sprinkle s. (See FIGS. 3, 4, and 13 (b)) After the concrete wall w1 is solidified, the bolts 8 to which the formwork panel 1 is fixed are released, and the vertical expansion / contraction member 3 is extended so as to perform the operation shown in FIGS. As shown, the link member of the horizontal expansion / contraction member 5 of the present invention is first activated to reduce the formwork panel 1 to a predetermined reduction dimension δ for demolding, and then FIG. 7, FIG. 8 and FIG.
It is moved upward as shown in FIG. 3 (c). When the first-stage concrete wall w1 is cast, holes 9 are formed on the inner peripheral surface thereof. The reduced size δ is adjusted by the position of the stopper 6a of the telescopic guide member 6 as shown in FIG.

Then, as shown in FIG. 9 and FIG.
After mounting the pedestal 10 by screwing the bolts 8 onto the pedestal, the lower surface of the mold frame panel 1 comes into contact with the upper surface of the pedestal 10 by the contraction operation of the vertical expansion / contraction mechanism 3 and the link member of the horizontal expansion / contraction member 5 is operated. The panel 1 is expanded again so that it can be used as an inner mold. Next, as shown in FIG. 11, FIG. 12 and FIG. 13 (d), the second-stage concrete wall w2 is placed so as to wind the reinforcing bars s on the concrete wall w1. At this time, a hole 9 for engaging with the bolt 8 for fixing and supporting the formwork panel 1 is formed on the inner peripheral surface of the concrete wall w2.

After the second-stage concrete wall w2 has solidified in this way, the mold panel 1 is demolded by a reduction operation. The mold panel 1 is fitted into the hole 9 by the bolt 8. By operation, it is fixedly supported as shown in FIG. On the other hand, the lower frame 4 is released from the bottom plate portion k, lifted by the contraction operation of the vertical expansion / contraction member 3, and fixedly supported through the bolt 8 in the hole on the inner peripheral surface of the first-stage concrete wall w1. It

Then, the fixed support of the formwork panel 1 on the second-stage concrete wall w2 is released, and the vertical expansion / contraction member 3 is extended to lift the formwork panel 1 as shown in FIG. 13 (f). Then, the form panel 1 is enlarged so as to be used as an inner form for placing the third-stage concrete wall in which the reinforcing bar s on the concrete w2 is wound.

As described above, in the horizontal expanding / contracting device for a formwork of this embodiment, the formwork panel 1 is enlarged by the horizontal expanding / contracting member 5 made of a link member to pour concrete, and after the concrete is solidified. The mold frame panel 1 is contracted by the horizontal expansion / contraction member 5 made of a link member to remove the mold. When the formwork panel 1 is expanded or contracted, each panel piece 1 is formed by the presence of the telescopic mold guide member 6 parallel to the expansion / contraction direction of the horizontal expansion / contraction member 5 along the diagonal line.
The relative movement between a and the main frame 2 is also extremely smooth.

[0015]

As described above, according to the present invention, the horizontal expansion / contraction member for connecting the form panel and the main frame therein is provided with the vertical expansion / contraction member for connecting the main frame and the lower frame therebelow. Since the link member is formed as a link member that tilts with movement, the link member tilts and expands and contracts as the vertical expansion and contraction member that connects the main frame and the lower frame moves up and down, so the structure is simple and the mounting portion is reinforced. Since no member or the like is required, the weight can be reduced, and since the expansion and contraction is performed along with the vertical movement of the vertical expansion / contraction member, the operation is simplified.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a view on arrow A in FIG.

FIG. 3 is a sectional view taken along line BB of FIG.

4 is a cross-sectional view taken along the line CC of FIG.

5 is an explanatory diagram of a first operating state of FIG. 3. FIG.

6 is an explanatory diagram of a first operating state of FIG. 4. FIG.

7 is an explanatory diagram of a second operating state of FIG.

FIG. 8 is an explanatory diagram of a second operating state of FIG.

9 is an explanatory diagram of a third operating state of FIG.

FIG. 10 is an explanatory diagram of a third operating state of FIG.

11 is an explanatory diagram of a fourth operating state of FIG.

FIG. 12 is an explanatory diagram of a fourth operating state of FIG.

FIG. 13 is an explanatory diagram showing a work process.

FIG. 14 is a plan view showing a conventional example.

[Explanation of symbols]

 1 Formwork panel 2 Main frame 3 Vertical elastic member 4 Lower frame 5 Horizontal elastic member 5c Link member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Minor Tanaka Minoru Tanaka, 11-11-25 Higashiooi, Shinagawa-ku, Tokyo, Goyo Construction Co., Ltd., Technical Research Institute (72) Inventor, Yujiro Kamata, Hyogo-ku, Kobe, Hyogo Prefecture 1-1-1 Tasakicho Mitsubishi Heavy Industries, Ltd. Inside Kobe Shipyard (72) Inventor Masayuki Yoshimoto 7-1-14 Wadamiyadori, Hyogo-ku, Kobe, Hyogo Prefecture Nishiryo Engineering Co., Ltd.

Claims (1)

[Claims] 1. A formwork panel conforming to the dimensions of a concrete structure, a main frame connected to the inside of the formwork panel via a horizontal elastic member, and a vertical elastic member below the main frame. A horizontal expanding / contracting device for a mold, which comprises a lower frame to be connected, wherein the horizontal expanding / contracting member is formed as a link member that tilts as the vertical expanding / contracting member moves vertically.