JPH0736998Y2 - Inner formwork panel holding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an inner formwork panel holding device, and more particularly to an inner formwork panel holding device used when concretely forming a wall on a floorboard. is there.

(Prior Art) Conventionally, as a formwork panel holding device of this type, for example, a device as shown in FIG. 6 has been proposed in JP-A-62-153464 (US Pat. No. 4,667,923). In the above apparatus, generally, after the inner formwork panel 10 is erected, the outer formwork panel 12 is erected so as to face each other, and is fixedly held by the inner formwork panel 10, after assembling the inner and outer formwork, Formwork panel 10,1
A wall 15 surrounded by 2 and a floor board 17 surrounded by a weir board 16 are both formed by driving concrete.

(Problems to be solved by the invention) However, in the device as described above, in order to connect the inner mold panel 10 and the outer mold panel 12 and to maintain a predetermined distance or space between them, Make a number of holes near the base of these molds and insert spacers 13 through the holes.
Since it is necessary to attach the and 14, the work of assembling the formwork is troublesome, and the strength of the formwork panel itself is lowered, and the life and reusability of the formwork panel are reduced.

Further, in the method in which holes are formed in the formwork and the cavity between the inner formwork panel 10 and the outer formwork panel 12 is held by the spacers 13 and 14, the spacers are attached at a constant distance from the lower edge of the formwork panel. Due to the concrete drop, the base part that receives the most pressure, especially the inner formwork panel 10 with the higher average pressure reception, bulges and deforms, and the outer formwork panel.
Frequently, twelve or lower building structures, such as walls 18, were dragged and collapsed.

The present invention has been made in view of the above-mentioned conventional problems, and provides a holding device that does not need to make a hole in a mold panel and can firmly support and support the base of the inner mold panel. That is the purpose.

(Means for Solving the Problem) In order to achieve the above object, the present invention holds an inner formwork panel when a vertical wall is concrete-cast on a floorboard formed by concrete-casting. An inner formwork panel holding device, wherein a support surface facing the inner formwork panel is substantially orthogonal to a bottom surface, and a support claw is integrally projecting obliquely backward from the bottom surface with respect to the support surface, A plurality of fixed seats that project the supporting claws while the floor plate is soft and are planted and fixed to the concrete surface, and are installed between the fixed seats and the inner formwork panel, and the base is a supporting surface of the fixed seats. An inner formwork panel holding device, which is supported and comprises a jack that supports a base portion of the inner formwork panel by a push-up rod.

It is preferable that the fixing seat has a plurality of ears uniformly formed on both side surfaces thereof, and the plurality of ears are provided with screw holes having an axis parallel to the projecting direction of the support claw.

Further, the inner formwork panel holding device includes a wedge member having a concave and convex bottom surface, and the plurality of ears of the fixed seat are planted and fixed to the concrete surface so that the wedge members respectively face the screw holes. It is preferable that the fixing seat is placed on the surface of the floor plate below and the bolts are screwed into the respective screw holes so that the fixed seat can be gradually removed from the solidified concrete surface by using the wedge member as a contact.

(Operation) With the above-mentioned configuration, the inner formwork panel holding device of the present invention can firmly hold and hold the base of the inner formwork panel with the fixed seat as the back by the holding means.

The above and other objects, features and advantages of the present invention will become more apparent from the detailed description of the embodiments below with reference to the drawings.

(Embodiment) Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the drawings.

1 to 3 show one embodiment of the inner formwork panel holding device of the present invention, in which 21 is a vertical wall, 22 is a horizontal floor plate, and 22 is a horizontal floor plate. The fixed seat 80 is installed on the surface.

The fixed seat 80 is formed separately from the floor plate 22 by metal or the like, and is generally a block body, and faces the wall (not shown) to be further formed on the floor plate 22 in parallel. The supporting surface 81 is provided. That is, the fixed seat 80 has a support surface 81 (front surface in FIG. 2) that is substantially orthogonal to at least one bottom surface 83, and this support surface 81 serves as a support surface for the holding means 70 described later. . The bottom surface 83 of the fixed seat 80 is provided with a plurality of supporting claws 831 projecting obliquely rearward, and the supporting claws 831 are attached to the floor plate 22 when the concrete surface of the floor plate 22 is not yet solidified.
The floor plate that is inserted into the concrete surface and solidifies the fixed seat 80.
It is designed to be planted and fixed on 22 concrete surfaces. Further, a plurality of ears 85 are respectively provided on both side faces 84 of the fixed seat 80, and a plurality of ears 85 are provided with axial screw holes 87 parallel to the projecting direction of the support claws 831. .

In this embodiment, a wedge member 90 is provided as a slip stopper as shown in FIG. 3 so that the fixed seat 80 can be gradually pulled out from the solidified concrete surface. The wedge member 90 has a bottom surface 91 with sawtooth-like irregularities,
The upper side surface 92 is an inclined surface parallel to the ear portion 85. Each of the plurality of wedge members 90 has an upper side surface 92,
It is placed on the floor surface below the plurality of ears 85 of the fixed seat 80 fixed to the concrete surface so as to face the screw holes 87, and then the bolts 89 are respectively passed through the screw holes 87 and the wedge member 90. By abutting the shaft tip end surface on the upper side surface 92 and turning the bolt 89 uniformly by using the wedge member 90 as a contact, the fixed seat 80 can be gradually pulled out from the solidified concrete surface by its reaction force. I am trying.

In contact with the support surface 81 of the fixed seat 80, that is, the support surface
Holding means 70 for supporting the base of the inner formwork panel 41 in a state of leaning against 81 is provided.

As the holding means 70, a generally used jack such as a gear type jack or a hydraulic type jack can be used.

The operation of the inner formwork panel holding device including the above-described fixed seat 80 and holding means 70 (wedge member 90 as necessary) will be described below.

As shown in Fig. 2, when a flat vertical solid such as a wall is formed by driving with concrete, the form is mainly an outer form panel.
It consists of 40 and the inner formwork panel 41. Upper and lower edges of the outer mold panel 40 and the inner mold panel 41 are provided with stiles 42 and 44, 43 and 45, respectively, for reinforcing the panel strength. A plurality of upper connecting devices 50 are installed across the upper stiles 42, 43 of the outer and inner formwork panels 40, 41. As shown most clearly in FIG. 4, each of these upper connecting devices 50 is provided with connecting seats 51, 52 on the upper stiles 42, 43 of the outer and inner formwork panels 40, 41, respectively. A pair of housings 53 and 54 with bolts are respectively installed on the connecting seats, the housings 53 and 54 are inserted to attach a connecting rod 55, and the connecting rod 55 is attached to a bolt 58,
It is fixed to the connecting seats 51 and 52 by 59. With this configuration, a certain space can be reliably retained between the upper edge portions of both the outer and inner formwork panels 40 and 41.

When forming the lower stile 44 of the outer formwork panel 40 and the already completed lower floor wall 21 or the first floor wall, as shown in FIG. A plurality of lower coupling devices 60 are attached. In each lower coupling device 60, one end of an arm member 61 having an L-shaped cross section is fixed to the lower stile 44 with a screw 62, and is embedded in the surface of a foundation beam through a hole 63 formed in the other end of the arm member 61. The connecting bolt 65 is screwed into the screw hole 641 of the base 64 to connect the lower stile 44 of the outer formwork panel 40 and the foundation beam. When the lower connecting device 60 is used, it is formed between the lower edge of the outer formwork panel 40 and the foundation beam of the ground floor when forming the already completed lower floor wall 21 or the first floor wall. , A certain space can be secured.

Next, the holding of the base of the inner formwork panel 41 will be described. As shown in FIG. 2, there is an end face 46 at the end of the lower stile 45 of the inner formwork panel 41, and this end face 46 and the support face 81 of the fixed seat 80 are arranged so as to face each other. A hydraulic jack 70 as a tensioning means is interposed between the end face 46 of the lower stile and the support face 81. This hydraulic jack 70 is mainly a base 72
And the lifting rod 71, and the base 72 is fixed to the support surface 81 of the fixed seat 80.
While being supported by the support surface 81, the push-up rod
The end of 71 is brought into contact with the lower stile end face 46 of the inner formwork panel. Thus, the hydraulic jack 70 is installed leaning against the fixed seat 80, and the push-up rod 71 of the hydraulic jack 70 stretches and supports the base of the inner formwork panel 41. Therefore, by adjusting the push-up rod 71 of the hydraulic jack 70 by expanding and contracting, the upper coupling device 50 and the lower coupling device 60 are adjusted.
The space between the outer and inner formwork panels 40 and 41 can be easily adjusted and held at an arbitrary distance together with the adjustment.

After assembling the outer and inner formwork panels 40 and 41 as described above,
After the concrete is poured and solidified, the wedge member 90 is placed on the lower surface of the plurality of ears 85 of the fixed seat 80 as shown in FIG. Then, the bolt 89 is passed through the threaded hole 87 of the ear portion 85, and the bolt 89 is evenly swung with the wedge member 90 as a contact to gradually pull out the fixed seat 80 from the solidified concrete surface.

The present invention is not limited to the above embodiment, and for example, as shown in FIG. 5, a plurality of fixed seats 30 corresponding to the fixed seats 80 of the above embodiment are integrally formed by projecting on the surface of the floor plate 22. Good. The fixing portion 30 is also generally a block body, and at least a wall (not shown) to be further formed on the floor plate 22.
It is configured to have a support surface 31 facing the. When using the fixed seat 30 integrated with the floor plate 22 as described above, the fixed seat 30 is smashed and removed after the concrete driving is formed,
Or it is shielded by the following finishing work.

(Effects of the Invention) As is apparent from the above description, the inner part provided with the plurality of fixed seats provided on the floor plate surface according to the present invention and the holding means for supporting the base part of the inner formwork panel by holding the fixed seats. When the formwork panel holding device is used, it is not necessary to make a hole in the inner formwork panel, and the base part of the inner formwork panel can be restrained and supported. In particular, the inner formwork panel having a higher average pressure reception can be firmly held without bulging and deformation. In addition, since the work of assembling the formwork is simple and there are no holes, there is no possibility of reducing the strength of the formwork panel itself, and there are various advantages such as extending the life of the formwork panel and improving reusability. I have.

[Brief description of drawings]

1 is a partial sectional side view showing an embodiment of the inner formwork panel holding device according to the present invention, FIG. 2 is a perspective view of a fixed seat 80 of the embodiment shown in FIG. 1, and FIG. 2 is an enlarged perspective view of a main part of FIG. 2, FIG. 4 is a perspective view of the upper connecting device 50 of the embodiment shown in FIG. 1, and FIG. 5 is a perspective view showing another embodiment of the inner formwork panel holding device of the present invention. FIG. 6 and FIG. 6 are sectional configuration diagrams showing a conventional holding method. 22 …… Floor plate, 30,80 …… Fixed seat 70 …… Holding means (hydraulic jack), 31,81 …… Supporting surface, 8
3 …… Bottom surface, 831 …… Supporting claw, 84 …… Both sides, 85 …… Ear, 87 …… Screw hole, 89 …… Bolt, 90 …… Wedge member, 91…
… Uneven bottom.

Claims (3)

[Scope of utility model registration request] 1. An inner formwork panel holding device for holding an inner formwork panel (41) when concretely forming a vertical wall on a floorboard (22) formed by driving concrete into concrete. The support surface (81) facing the inner formwork panel (41) is substantially orthogonal to the bottom surface (83), and integrally projects obliquely rearward from the bottom surface (83) with respect to the support surface (81). A plurality of fixing seats (80) each having a supporting claw (831), the supporting claw (831) protruding while the floor plate (22) is soft and being planted and fixed to a concrete surface; It is installed between the inner form panel (41), the base (72) is supported by the support surface (81) of the fixed seat (80), and the inner form panel (41) is supported by the push-up rod (71). ), And a jack (70) that supports the base of the inner frame panel holding device. 2. A plurality of ears (85) are uniformly formed on both side surfaces (84) of the fixed seat (80), and the protrusion of the support claw (831) is formed on the ears (85). The inner formwork panel holding device according to claim 1, wherein a screw hole (87) having an axis parallel to the direction is bored. 3. The inner formwork panel holding device according to claim 1, further comprising a wedge member (90) having a concave and convex bottom surface (91) so that the wedge member (90) faces the screw hole (87). Place the bolts (8) on the surface of the floor plate (22) below the ears (85) of the fixed seat (80) fixed to the concrete surface.
9) are screwed into the screw holes (87) and the wedge members (90)
The inner formwork panel holding device according to claim 2, wherein the fixed seat (80) can be gradually removed from the solidified concrete surface by using the pad as a pad.