JP2992520B1 - Attachment / detachment device for cores separated from peripheral frames in concrete formwork - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To form a concrete formwork in which a core can be securely fixed to a fixed position of a surface plate when molding a product, and after molding, the core can be separated from the surface plate and detached together with the product. Provided is an attaching / detaching device for a core mounted on a board. SOLUTION: Since a core or the like attached to a surface plate of a concrete formwork has an inclined portion which prevents release of a product, the core and the like are fixed to a fixed position of the surface plate during molding of a product, and are formed. When the product is released after finishing, it is a detachable device such as a core that is released together with the product, and exits to the back side of the surface plate 2 through a hole 7 provided in the surface plate 2 below the core 5 or the like. A mounting piece 6 is provided,
On the back side of the surface plate 1, there is provided a pulling-down means 10 which is disengaged from the passive portion 8 provided on the mounting piece 6 by operating means, and when the pulling-down means 10 is engaged with the passive portion 8, the mounting piece 6 is pulled down. When the core 5 and the like are fixed to the surface plate 2 and are detached from the passive unit 8, the core 5 and the like are detached by opening the mounting piece 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a concrete formwork.
On detachable devices such as cores separated from the peripheral frame
You.

[0002]

2. Description of the Related Art Conventionally, a concave portion is required inside a product such as a segment formed of a concrete form for accommodating a nut or the like for connection and turning the same. It is done by fixing.

However, when the core is fixed to the surface plate as described above, the core is separated from the peripheral frame, and
However, if there is an inclined part as shown in FIG. 3 , the product cannot be released from the mold. Therefore, the core is fixed to the surface plate only when the product is molded, and when the molding is completed, the core is removed. A device for detaching with the product is required, but such a core attaching / detaching device has not been developed yet.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in accordance with the present situation, and a core or the like is determined by an attracting means.
Attach it to the panel and bolt holes between the core and the surrounding frame.
By bridging the forming members of the product,
Easily form a recess with a bolt hole opening to the side at a distance
Perimeter frame in concrete formwork that can be formed
Provided is a detachable device such as a core separated from the core.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a concrete formwork according to the present invention is provided with a peripheral frame.
The detachable attachment / detachment device such as a core that is separated is characterized by adopting the following configuration. Core, etc. onto the surface plate of concrete formwork is
To those that are attached to be separated from the peripheral frame
And the mounting piece on which the core etc.
Engaging the attracting means out of the bore provided
Is fixed to the surface plate, and corresponds to the peripheral frame of the core etc.
Between the wall and the peripheral frame, it is supported so that it can be inserted into and removed from the peripheral frame
Bolt hole forming members are arranged in a cross-linked manner.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a detachable device for a core and the like in a concrete formwork according to the present invention which is separated from a frame .

[0007] In the drawings, reference numeral A denotes a concrete formwork for molding a product 1 such as a segment. This formwork A is composed of a base plate 2 having an arc shape and peripheral frames arranged around the base plate 2, that is, a side frame 3 and a wife frame 4.
As shown in FIG. 3, a core mounting seat 2a, which will be described later, is provided in a portion of the surface plate 2 close to the side frame 3.

Reference numeral 5 denotes a recess 1a for coupling to the product 1.
It is a core that forms In this core 5, the wall 5a corresponding to the wife frame 4 of the mold A forms a right angle with the base 5b, the wall 5c on the opposite side inclines in a state of the upper side, and the upper surface 5d is parallel to the base 5b. It is formed in a frontal shape. Therefore, Wife frame 4 the core 5 to the end of the surface plate 2 forming an arcuate
When mounted so as to be isolated from the wall (see FIG. 3) , the wall 5a
So that the overhang to the wife frame 4 side becomes larger
Tilts and becomes a reverse slope to the draft angle of the product 1
It will inhibit mold release. Therefore, core 5, when shaping the product 1 is placed and fixed to the mounting seat 2a, when releasing the product 1 finished the molding is detached is accompanied with the product 1 from the platen 2 You need to do that.

Reference numeral 6 denotes a mounting piece mounted on the core 5. The mounting piece 6 passes through a hole 7 formed in the
And a hole 8 as a passive portion of a pulling-down means described later is provided at a tip portion thereof. If the mounting piece 6 is fixed to the core 5, when the product 1 is released from the mold, the product 1 is slightly twisted and difficult to be pulled out from the hole 7. Therefore, as shown in FIG. Axis 9 at the upper end of 6
It is preferable that a floating gap is present between the mounting piece 6 and the hole 7 of the surface plate 2 so that the mounting piece 6 can be smoothly removed from the hole 7 by the floating movement.

Reference numeral 10 denotes means for pulling down the mounting piece 6. When the wedge rod 10 shown in FIG. 1 is used, the wedge rod 10 is fitted into a sliding bearing 11 attached to the side frame 3 and the wedge rod 10 is pushed out by the operation means described later.
The wedge rod 10 engages the wedge surface 10 a at the tip with the hole 8 which is the passive portion 6 a of the mounting piece 6. Then, the mounting piece 6 is pulled down to fix the core 5 in close contact with the mounting seat 2a. However, when the wedge rod 10 is leveraged and pulled on the punching wheel 12 attached to the original end thereof, the wedge rod 10 comes off from the hole 8 which is a passive portion of the mounting piece 6, so that the mounting piece 6 becomes free. The child 5 can be detached from the surface plate 2.

Reference numeral 13 denotes operating means for operating the lowering means 10. This operating means has one end engaged with the concave portion 10b at the original end of the wedge rod 10, the other end applied to the pillow material 14, and the screw 15 is loosely fitted in the middle to attach the screw 15 to the side frame 3. When the wedge rod 10 is screwed into the female screw 16, the operating means 13 rotates about the pillow material 14 as a fulcrum, and the wedge rod 10
Is pushed out.

Reference numeral 17 denotes a wall corresponding to the wife frame 4 of the core 5
And 5a, provided in the cross-linked between the wife frame 4, is a pin member Ru is drilled 18 for coupling bolts to the product 1. The pin 17 is inserted into the mold A through the hole 19 formed in the wife frame 4, and the small diameter portion 17 a at the tip is fitted into the hole 20 formed in the wall 5 a of the core 5 . Then, the concrete was filled into the mold A, when forming the product 1 This concrete is solidified and withdrawn the pin 17, spaced from the side of the product 1
Concave portion 1 having a bolt hole 18 opening to the side surface at the set position
a is formed.

In the above embodiment of the present invention, the core is a wife frame.
As described in the case of separating from the core, the core is from the side frame
They may be separated from each other.
The description is omitted, and the means for lowering the mounting piece of the core
It is not limited to the wedge system to disengage the wedge surface to the passive portion of the mounting piece, as long as they serve the same function, but it is capable of arbitrarily selected other means, drawing parallel for these
Description is also omitted.

Peripheries of the concrete formwork having the above configuration
A detachable device such as a core separated from the frame includes a mounting piece 6 of the core 5.
Into the hole 7 formed in the surface plate 2, and put the core 5 in the mounting seat 2a.
And place the bolt hole in the hole 19 of the wife frame 4.
Insert the material 17 and remove the small diameter portion 17a
When fitted into the hole 20 formed in the wall 5a of the core 5, a bolt hole
Forming member 17 is bridged between the core 5 and the wife frame 4.
You. Then, if the wedge surface 10a of the pulling-down means 10 is engaged with the hole 8 as a passive portion of the mounting piece 6, the mounting piece 6 is pulled down by the wedge surface 10a, and the core 5 is attached to the wall 5a.
It is fixed to the surface plate 2 in a state where it is separated from the surface plate. like this
After the core 5 is fixed , the mold A is filled with concrete, and a product 1 such as a segment in which the recess 5a is formed in the core 5 is formed. Then, when the product 1 is cured and can be released, the pulling-down means 10 is removed from the hole 8 of the passive portion of the mounting piece 6 and the bolt 19 is removed from the hole 19 of the end frame 4.
If the core forming member 17 is released when the hole forming member 17 is removed, the mold A is opened in this state, and if the product 1 is released , the core 5 is attached to the product 1. because it is separated from the platen 2, then either the by pulling the core 5 in the direction indicated by the arrow in FIG. 5, the core 5 is demolded product 1 side
A recessed portion in which a bolt hole 18 opens to the side at a position separated from
1a can be formed.

[0015]

As described above, the detachable device for the core or the like separated from the end frame of the concrete formwork according to the present invention is a core or the like.
Attach to the surface plate with the attracting means and
Between the bolt and the surrounding frame
The bolt hole is located at a position away from the side edge of the product
The recess that opens into the hole can be formed simply and reliably.

[Brief description of the drawings]

FIG. 1 shows a concrete form according to the present invention separated from a peripheral form.
Is a vertical sectional side view of a state of fixing the core to the surface plate by attachment apparatus of the core such that septum to.

FIG. 2 is a front view showing a pulling-down means and an operating means of the same device.

FIG. 3 is a vertical sectional front view showing a state in which a core is fixed to a surface plate and a product is formed by the same apparatus.

FIG. 4 is a longitudinal sectional front view showing a state in which a product is released and a core is released after the product is formed.

FIG. 5 is a longitudinal sectional front view showing a state in which a core is released from a released product.

[Explanation of symbols]

A Concrete form 1 Product 2 Surface plate 4 Perimeter frame 5 Core 5a Wall 6 Mounting piece 7 Hole 8 Passive part 10 Pulling down means 13 Operating means 17 Bolt hole forming member 17a Small diameter part 20 hole

Claims (1)

(57) [Claims] [Claim 1] core, such as the circumferential onto the surface plate of concrete formwork
Smell attached away from the side frame
The mounting piece on which the core and the like are provided on the
By pulling out of the hole and engaging the attracting means
Fastened to the surface plate, between the peripheral frame and the wall corresponding to the peripheral frame such as the core,
A bolt hole forming member that is supported in a
An attachment / detachment device for a core or the like separated from a peripheral frame in a concrete formwork, which is arranged in a bridge shape .