JPH0620839Y2 - Concrete formwork - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention relates to a concrete formwork.

(Prior Art) Generally, the formwork used for placing the cloth foundation concrete is
Webs facing the side opposite to the concrete molding surface are provided at both upper and lower ends of the mold body, and ribs are provided at the end edges of the webs in parallel with the mold body to form a reinforcing frame. For this reason, when concrete adheres and solidifies in the reinforcing frame formed by the form body, web and ribs when pouring concrete, the weight of the form becomes heavy and it becomes difficult to handle when removing the form. There is a problem. Further, since the web is formed with ribs, there is a problem that it takes time to remove the solidified concrete.

In order to solve the above-mentioned problems, conventionally, webs are integrally formed at both upper and lower end portions of a mold body, and an anti-adhesion plate is fixedly provided between the mold body and the edge of the web in a continuous manner with ribs. However, a formwork that enables easy removal of concrete that has adhered to the web and solidified during concrete placement is
Japanese Utility Model Publication No. 59-3050, Japanese Utility Model Publication 59-5194.
No. 9, JP 61-25446, JP 59
No. 27818 or registered design No. 688959. Also, the actual development sho 59-320
Japanese Patent Publication No. 50, Japanese Utility Model Publication No. 59-51949, Japanese Patent Publication No. 5
No. 9-27818 or registered design 688959
The plate attachment prevention plate shown in Japanese Patent Laid-Open Publications and the like is provided obliquely.

(Problems to be solved by the invention) However, in the above-mentioned conventional formwork, since the anti-adhesion plate is fixedly installed on the web under the formwork, a plurality of formworks are stacked vertically to form an upper formwork. The lower formwork and the lower formwork cannot be held and fixed by a holding tool, and it is not possible to place a rising portion higher than the vertical length by using only these formwork. Also, the actual development number 59-32
No. 050, No. 59-51949, No. 61-25446, or Registered Design No. 68895.
In the case of the formwork shown in Japanese Patent No. 9 etc., it is not possible to put a finger on the side provided with the adhesion prevention plate during transportation,
There is a problem that the operability is poor and the work efficiency is reduced.

Configuration of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention uses a concrete molding surface as a flat concrete molding surface on the outer surface of a concrete molding surface at both upper and lower opposite edges. The web that goes to the other side,
In a concrete formwork provided with a reinforcing frame constituted by ribs formed by bending parallel to the concrete molding surface over the entire length of the web, an adhesion preventing member for preventing adhesion of concrete to the reinforcing frame is desired. Sometimes, the upper surface of the reinforcing frame is covered, and it is detachably provided so that it is not covered except when desired, and when the adhesion preventing member is removed, the form frame bodies can be stacked.

(Operation) Therefore, during the concrete pouring work, if the adhesion preventing member is in a state of covering the upper surface of the reinforcing frame, a part of the concrete dropped on the adhesion preventing member at the time of pouring will be slid off along the adhesion preventing member. It is possible to remove concrete that has adhered and solidified by making the adhesion preventing member not cover the upper surface of the reinforcing frame.

Also, when placing a rising part that is higher than the vertical length of this formwork, a plurality of formwork is stacked and only the bottommost formwork placed on the base concrete is reinforced by the adhesion prevention member. It is possible to firmly fix both upper and lower reinforcing frames, which are in contact with each other, by the holding tool without covering the upper surface of the reinforcing frame with the adhesion preventing member.

Furthermore, by keeping the reinforcement frame not covered by the anti-adhesion member during transportation of this formwork, it is possible to put a finger on either of the reinforcement frames of the formwork, resulting in good operability and reduced work efficiency. Can be prevented.

(Embodiment) An embodiment embodying the present invention will be described below with reference to FIGS. 1 to 3. Upper and lower ends of a frame body 1 whose outer surface is a concrete molding surface 2 made of a flat metal plate such as steel. A web 3 is formed along the entire length of the edge toward the side opposite to the concrete forming surface 2, and a rib 4 that is parallel to the concrete forming surface 2 is formed along the entire length of the web 3 to form a web 3. A reinforcing frame 5 is formed by the rib 4.

Square pipe-shaped connecting members 7 each having a connecting hole 6 are welded and fixed to both ends of the back surface of the mold body 1. A guide plate 8 is welded and fixed to the mold body 1 so as to face one of the connecting members 7, and a guide hole 9 corresponding to the connecting hole 6 is transparently provided in the guide plate 8. Connection hole 6 and guide hole 9
A connecting rod 10a is inserted into and supported by the connecting rod 10a, and a U-shaped holding rod 10b is fixed to the connecting rod 10a.
The connecting pin 10 for connecting the adjoining concrete formwork (not shown) is constituted by "a" and the holding rod 10b.

Reinforcing members 11 are welded and fixed to the middle portion of the back surface of the formwork body 1 at predetermined intervals, and upper and lower ends of the reinforcing members 11 are in contact with the web 3.

As shown in FIG. 1, the formwork has an adhesion prevention member 12 for preventing concrete from adhering to the reinforcement frame 5 between the reinforcement members 11 and between the connecting member 7 and the reinforcement member 11.
Is detachably attached. That is, as shown in FIG. 2, the adhesion preventing member 12 is formed of a metal plate such as steel, and has a flat plate-shaped main body 12a and a pair of legs 12b and 12c bent at opposite side edges thereof. Have. The adhesion preventing member 12 may be made of wood, resin, or the like. The leg 12b is formed higher than the leg 12c, and the main body portion 12a is formed in an oblique shape that is lowered toward the rib 4 side in a state where the adhesion preventing member 12 is attached to the mold. Leg 12c
Engagement protrusions 13 are provided at predetermined intervals on the ribs, and the engagement prevention members 12 are held in the attached state by the engagement between the engagement protrusions 13 and the engagement holes 14 formed in the ribs 4. Has become. Further, the leg 12b forms an obtuse angle with respect to the main body portion 12a, and the adhesion prevention member 12 is stabilized by inserting the adhesion prevention member 12 between the mold main body 1 and the rib 4 against its elasticity. It can be installed in the installed state.

Now, in order to perform concrete placing of the cloth foundation using the concrete formwork constructed as described above, as shown in FIG. 1, the reinforcement frame 5 installed on the base concrete (not shown) The adhesion preventing member 12 is attached so as to cover the upper surface, and adjacent formwork is connected by the connecting pin 10 to perform a predetermined framing work. After that, concrete is poured, and most of the concrete that has fallen onto the adhesion preventing member 12 at this time of sliding falls off along the inclined main body portion 12a. At this time, the concrete that has been solidified while being attached to the adhesion preventing member 12 can be easily removed by removing the adhesion preventing member 12. Therefore,
It is possible to prevent the formwork from becoming heavy due to the attached concrete,
Further, since it is possible to hang a finger on both the upper and lower reinforcing frames 5, it is possible to prevent the workability from being lowered during concrete pouring or transportation.

Further, when placing a rising portion that is higher than the vertical length of the mold body 1, for example, as shown in FIG. 3, two molds are stacked and the reinforcing frame 5 of the upper mold is mounted. If the anti-adhesion member 12 is not attached and only the anti-adhesion member 12 is attached to the reinforcing frame 5 of the lower formwork installed on the base concrete, the gripping tool 15 (actual application 57-
75288, etc.), the lower web 3 of the upper mold
And the upper web 3 of the lower mold can be firmly fixed.

In addition, this invention may be implemented as follows.

(1) As shown in FIG. 4, the rib 4 is provided with a ridge 16 projecting toward the mold body 1 side over its entire length, and
The leg 12c of the anti-adhesion member 12 is formed with an engaging recess 17 corresponding to the protrusion 16 so that the anti-adhesion member 12 can be attached.

(2) As shown in FIG. 5, both legs 1 of the adhesion prevention member 12
2b and 12c are bent at an obtuse angle with respect to the main body 12a,
The anti-adhesion member 12 should be constructed so as to be inserted and held in a stable state between the mold body 1 and the rib 4 by the elastic force of the legs 12b and 12c.

(3) As shown in FIG. 6, a slanting elastically deformable locking piece 18 toward the web 3 side is welded to the back surface of the mold body 1, and the adhesion preventing member 12 is supported by this locking piece 18. Be configured to do so. Further, the locking piece 18 is the reinforcing member 1.
It may be provided on the inner side surface of 1.

(4) As shown in FIG. 7, notches are formed in the ribs 4 of the form to bend the oblique locking pieces 19 toward the web 3 side, and the legs 12c of the adhesion preventing member 12 are provided with the above-mentioned parts. Form a through hole 20 in which the locking piece 19 is locked.

(5) As shown in FIG. 8, the through hole 2 is formed in each reinforcing member 11.
1 is provided, and the adhesion prevention member 12 is inserted between the mold body 1 and the rib 4, and then the support rod 22 is inserted between the insertion holes 21 to stabilize the attachment state of the adhesion prevention member 12. .

(6) As shown in FIG. 9, a rectangular pipe-shaped reinforcing member 11
Incorporate into a formwork with. In the example of FIG. 9, a shaft hole 23 is formed in the reinforcing member 11, and the adhesion preventing member 12 is bent to the main body portion 12a and one side edge of the main body portion 12a.
b and the bearing portion 12 formed by bending the other end edge of the main body portion 12a
and d. And this adhesion prevention member 1
2 is mounted by supporting a shaft 24, which is loosely inserted in the bearing 12d and protrudes from both ends thereof, in the shaft hole 23.

(7) As shown in FIG. 10, connect the connecting member 12 to the main body 1
2a and legs 12b, and a hinge 30 is provided between one side edge of the main body 12a and the connecting member 7 or the reinforcing member 11. In this example, the anti-adhesion member 12 covers the upper surface of the web 3 as shown by the solid line in the figure, and stands up along the connecting member 7 or the reinforcing member 11 as shown by the chain double-dashed line in the figure. If the attachment preventing member 12 is arranged in a standing state, the plurality of molds can be stacked and fixed by the holding tool 15, and the attachment preventing member 12 can be attached. Need not be removed from the formwork.

(8) The attachment position of the hinge in the example of FIG. 10 is between the main body portion 12a of the adhesion preventing member 12 and the rib 4 of the form, and the adhesion preventing member 12 is provided so as to be openable and closable around the rib 4. In this example, the anti-adhesion member 12 is removed by removing the screw fixing the hinge.

(9) As shown in FIG. 11, the adhesion preventing member 12 is made of wood, rubber, resin (particularly foaming resin), or a light metal such as aluminum. After it is housed between the ribs, it is fixed to the ribs 4 with screws 25. The web 3 may be fixed from the lower surface side with screws.

(10) The concrete molding surface is embodied as a corner mold having a plane L shape, for example.

(11) The anti-adhesion member 12 is made of a metal plate such as steel having magnetism and is composed of only the main body, and the anti-adhesion member 12 is attached to the web 3 by magnetic force.

(Advantages of the Invention) With the above configuration, in the present invention, the concrete that has adhered to the adhesion preventing member and is solidified can be easily removed by removing the adhesion preventing member so that the upper surface of the reinforcing frame is not covered. . It is possible to stack multiple formwork easily. Since the fingers can be hung on the top and bottom of the mold, the workability is good in operation.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment embodying the present invention,
FIG. 2 is an exploded perspective view of an essential part showing attachment of an adhesion preventing member,
FIG. 3 is a side sectional view showing a state in which molds are stacked,
FIG. 11 shows another example of this invention, and FIGS.
FIG. 9 and FIG. 11 are exploded perspective views of essential parts showing the attachment of the adhesion preventing member, and FIGS. 8 and 10 are perspective views of essential parts showing the attachment state of the adhesion preventing member. Form body 1, concrete molding surface 2, web 3, adhesion preventing member 12.

Claims (1)

[Scope of utility model registration request] 1. A web (3) facing the opposite side of the concrete molding surface (2) at the vertically opposite end edges of a form body (1) having an outer surface having a flat concrete molding surface (2).
And a reinforcing frame (5) constituted by a rib (4) bent in parallel with the concrete molding surface (2) over the entire length of the web (3), the reinforcing frame (5 ), An adhesion prevention member (12) for preventing the adhesion of concrete to the reinforcing frame (5)
A concrete mold that covers the upper surface of the mold and is detachably provided so that it is not covered except when desired, and the mold body (1) can be stacked when the adhesion preventing member (12) is removed. frame.