JPH071449Y2 - Supporting device for concrete formwork - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an improvement of a supporting device for a concrete formwork.

(Prior Art) FIG. 6 is a perspective view of a conventional concrete formwork,
The concrete formwork 100 is a frame stand 101 placed on the ground.
And an outer mold 102 placed on the frame base 101.

The outer frame 102 is a rectangular tube formed by vertically arranging four panels composed of wide outer panels 103, 103 and slightly narrow inner panels 104, 104.

The outer panel 103 is a frame body in which a rectangular flat plate 103a is framed with a frame 103b and reinforced with ribs 103c.

Similarly, the inner panel 104 is a frame body including a flat plate 104a, a frame 104b, and a rib 104c.

The outer panel 103, 103 and the inner panel 104, 104 are built as shown in FIG.
Connect with 5 ... Concrete is poured into the assembled mold 100 for concrete.

The outer panels 103, 103, the inner panels 104, 104, and the clampers 105 ... Are made strong so as to withstand the pressure of the poured concrete.

(Problems to be solved by the invention) However, when the concrete is solidified and then released from the mold, pressure is applied to the panels 103, 103, 104, 104 from the concrete side. Therefore, when the clamper 105 is removed, the panels 103, 104 are removed.
Can be hurt outside.

Therefore, conventionally, the mold releasing is performed by a collaborative work of one person who removes the clamper 105 ... and one person who holds the panel and one or two persons in total.

In view of demand for labor saving and improvement of working environment in recent years, a useful supporting device for concrete formwork has been earnestly desired.

(Means for Solving the Problem) In order to meet the above-mentioned demand, the present invention is to mount a lower end of the pillar and a pillar that is swingably pinned to a formwork and extends obliquely downward. A supporting device for a concrete formwork is configured by a receiving plate extended from the frame base and a support end pushing mechanism that pushes out the lower ends of the supporting columns placed on the receiving plate to drop the supporting plate from the receiving plate. And

The strut end pushing mechanism includes an eccentric cam rotatably attached to a bracket extending from the frame base and a handle for rotating the eccentric cam, and the strut end is placed on a receiving plate. In such a case, the small diameter portion of the eccentric cam may be made to face the end of the column, and the column end may be pushed out by the large diameter portion of the eccentric cam when the column end is dropped from the receiving plate.

(Operation) After the concrete is poured and solidified, the mold is removed by the following procedure.

First, release the clamper. At this time, the formwork is pushed outward from the concrete side, but the support device of the formwork supports the formwork, so the formwork is not blunt.

Next, the support end push-out mechanism pushes out the support post so that the support post falls off the support plate, and the mold is tilted.

(Embodiment) An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of a concrete formwork according to the present invention.

The concrete formwork 1 includes a frame base 2 placed on the ground,
The outer frame 3 is mounted on the frame base 2.

The outer formwork 3 has wide outer panels 4,4 and slightly narrow inner panels 5,5.
A rectangular tube is constructed by vertically arranging four panels consisting of and.

The outer panel 4 is a frame body which is framed on a rectangular flat plate 4a by a frame 4b and is reinforced by ribs 4c, and the lower end of the outer panel 4 is swingably supported by a frame base 2 by a pin 2a.

Similarly, the inner panel 5 is a frame body including a flat plate 5a, a frame 5b, and a rib 5c.

These outer panels 4 and 4 and inner panels 5 and 5 are erected, their corners are aligned, and they are connected by a clamper 6.

FIG. 2 is a sectional view taken along line A in FIG. 1. The clamper 6 includes an eccentric shaft 6a provided on the outer panel 4 side, a claw member 6b pivotally supported by the eccentric shaft 6a, and an eccentric shaft 6a. It is composed of a lever 6c for manually rotating and a pin 6d provided on the inner panel 5 side.

Set the lever 6c to the position shown in the phantom line D2 and manually press the nail material 6b.
When the lever 6c is rotated in the direction of the arrow, the eccentric shaft 6a is eccentric to move the claw member 6d downward in the drawing.

The claw material 6b strongly engages with the pin 6d to form a strong outer mold 3.

On the other hand, as shown in FIG. 1, the outer frame 3 has a base 12a of a support column 12 which is swingable by a pin 11 substantially at the center of its outer surface.
This strut extends diagonally downward.

FIG. 3 is a sectional view of a supporting device for a mold according to the present invention, and FIG.

The supporting device 10 of the formwork includes the support column 12, a receiving plate 14 hung on a bracket 13 extending from the frame base 2, and a handle.
A column end pushing-out mechanism 15 composed of 15a and an eccentric cam 15b is provided.

The bracket 13 is provided with a long hole 13a, and the long hole 13a
12b penetrates.

12c is a brim of a pillar, and 12d is a shock absorbing spring.

The operation of the concrete form supporting apparatus having the above structure will be described below.

FIG. 5 is a diagram for explaining the operation. First, as shown in FIG. 5 (a), the outer panel 4 is pushed up in the direction of the arrow by manpower or mechanical force to stand up. The tip 12b of the column 12 rises along the right edge of the receiving plate 14 in the figure, and as shown in FIG.
14 on.

In the state shown in FIG. 5 (b), the outer panels 4 and 4 and the inner panels 5 and 5 are firmly connected by a clamper 6 and concrete is poured into the formwork 1.

When the concrete solidifies, open the clampers 6 ...
The outer panel 4 tries to move to the right in the figure due to the residual pressure of the pressure when concrete is poured, but the support column 12 supports the outer panel 4 with the receiving plate 14 as a base point.

Next, when the handle 15a is rotated to the right in the figure, the eccentric cam 15b pushes the tip 12b of the column 12 to the right, and as a result, the tip 12b of the column falls off the receiving plate 14 and falls as shown in FIG. 5 (c). The outer panel 4 is inclined. At this time, the panel 12d is the collar 12c.
Is interposed between the bracket 13 and the bracket 13 to perform a good shock absorbing action.

The supporting device 10 of the above-mentioned mold is provided on each of the other outer panel 4 and the inner panels 5, 5 so that the molds can be released one by one.

The pillar end pushing mechanism 15 is the eccentric cam 15b described above.
However, the crankshaft, the lever, the lever, the empty / hydraulic cylinder, and the like are not limited to the above, as long as the columns 12 can be arbitrarily dropped from the receiving plate 14.

(Effect of the device) Since the pressure of concrete acts on the formwork when the mold is released, and this formwork compresses the support pillar, this support pillar that receives an external force cannot be easily removed.

Therefore, in the first aspect, since the lower end of the column is dropped from the receiving plate by the column end pushing mechanism, the column can be easily removed, and the work of removing the mold from the mold becomes easy.

According to the structure of claim 2, by rotating the eccentric cam via the handle, the column can be removed with an extremely small force by the lever principle.

[Brief description of drawings]

 FIG. 1 is a perspective view of a concrete formwork according to the present invention, FIG. 2 is a sectional view taken along line A of FIG. 1, FIG. 3 is a sectional view of a formwork supporting device according to the present invention, and FIG. FIG. 5 is a view from the direction of the arrow B, FIG. 5 is a diagram for explaining the operation of (a) to (c), and FIG. 6 is a perspective view of a conventional concrete formwork. DESCRIPTION OF SYMBOLS 1 ... Concrete formwork, 2 ... Frame stand 10 ... Formwork support device, 11 ... Pin 12 ... Prop, 12a ... Base 12b ... Tip, 14 ... Receiving plate 15 ... Prop end pushing mechanism

Claims (2)

[Scope of utility model registration request] 1. A support device for supporting a tiltable concrete formwork erected on a frame base, wherein the support device is pivotally pinned to the formwork and extends obliquely downward. A support pillar, a receiving plate extending from the frame to mount the lower end of the supporting pillar, and a supporting end pushing mechanism that pushes out the lower end of the supporting pillar mounted on the receiving plate to drop the supporting plate from the receiving plate. A supporting device for concrete formwork, which is characterized by comprising: 2. The strut end pushing-out mechanism comprises an eccentric cam rotatably attached to a bracket extending from the frame base and a handle for rotating the eccentric cam, and the strut is supported on the receiving plate. The small diameter part of the eccentric cam is made to face the column end when the end is placed, and the column end is pushed out by the large diameter part of the eccentric cam when the column end is dropped from the receiving plate. Item 1. A support device for a concrete formwork according to Item 1.