JP3264756B2 - Concrete hatching equipment for floor hatch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete driving system used for constructing a floor hatch used as a cover plate for various inspection ports provided indoors or outdoors such as at a front entrance.

[0002]

2. Description of the Related Art Here, a floor hatch x is used as an inspection port or the like, a lid receiving frame is fixed to an edge of the floor hatch, and a hatch lid is attached on the lid receiving frame. Conventional construction means of this floor hatch will be described with reference to FIG.

First, a floor hatch x is placed on a horizontal support frame a.
The form b is mounted at a position outside the inner dimension of the form b.
A concrete c serving as a foundation surface is driven into the surroundings at a predetermined level, and anchor bolts d are embedded and left until solidified to form a concrete base e (FIG. 6A). Next, after solidification of the concrete c, the support frame a and the mold b are removed. Then, the anchor g attached to the sliding groove on the outer surface of the lid receiving frame f is welded to the anchor bolt d. At this time, the hatch lid 50 is mounted on the lid receiving frame f, and its height is adjusted. Then, after covering the joint between the hatch lid 50 and the lid receiving frame f with the curing material i, a finish mortar j serving as the inner peripheral surface of the floor hatch x is applied to the inner surface of the concrete base e, and the lid receiving frame f Then, the finishing mortar j is embedded between the concrete c (FIG. 6B).

[0004]

By the way, in the above-mentioned construction means, the lid receiving frame is fixed after the slab concrete c is solidified (solidification is usually one week or more), and the mortar j is completed by solidification. Since the construction period is long, the level of the lid receiving frame f is adjusted when the anchor frame is fixed to the anchor bolt d. Therefore, the leveling is primitive and troublesome, and the level cannot be always adjusted horizontally. Was. Further, since the inner surface of the floor hatch x is applied by applying a finishing mortar j, the construction is troublesome and requires skill. In addition, when the finishing mortar j is driven, the curing material i is adhered, which is troublesome. An object of the present invention is to eliminate the problems of the conventional configuration.

[0005]

According to the present invention, there is provided a concrete installation device for a floor hatch, comprising a rectangular frame having a substantially L-shaped cross section, a vertical side wall having an anchor fixed to an outer surface, and the side wall. It is one that of fixing the rectangular lid receiving frame comprising a lid receiving portion projecting from the lower edge inwardly at a right angle shape, is erected on the horizontal support frame for supporting the mortar, height the anchor at the upper end adjustably secured a connecting rod supporting said lid receiving frame at a predetermined height, Na the connecting rod is erected screwed
Slide guide that supports the unit so that its movement can be adjusted in and out.
Fixed play fixed on a horizontal support frame with grooves formed
And a shield that is mounted on the horizontal support frame, inscribes the lid receiving frame supported by the connecting rod, and blocks the mortar driven into the outer peripheral portion of the lid receiving frame to define the inner peripheral surface of the hatch entrance. It is characterized by comprising a frame, a lid receiving frame, and a curing material for shielding a gap on the lid receiving portion generated between the shielding frames.

[0006]

First, the shielding frame is mounted on the horizontal support frame at the required position. And the fixed plate is supported horizontally around the shielding frame.
Fix to the frame, and connect to the nuts provided on each
Screw the connecting rod. And put the nut along the sliding guide groove
Adjust as appropriate. Next, place the lid receiving frame along the outside of the upper end of the shielding frame.
To the sliding groove on the outer surface of the lid receiving frame.
Fix the anchor to the connecting rod. Thereafter, a flexible curing material is embedded in a gap between the lid receiving frame and the lid receiving portion formed between the shielding frames, and concrete is driven around the outside. And after this solidification, while separating the shielding frame from the concrete surface,
The flexible curing material is removed from the lid receiving frame. Thus, the construction of the lid receiving frame f is performed.

[0007]

As shown in FIG. 2, reference numeral 1 denotes a square inspection port, and a metal lid receiving frame 2 having a substantially L-shaped cross section is provided around the inner periphery of the inspection port. In addition, concrete 41 is poured into the floor around the inspection port 1 as described later, and a floor finishing material 42 such as a resin tile is laid on the surface. A hatch lid 50 is attached to the lid receiving frame 2. The hatch lid 50 is, as shown in FIG.
Then, a finishing material 52 such as a mortar or a resin tile of the same material as the floor finishing material 42 is filled or laid so that the hatch lid 50 does not cause a sense of discomfort with its peripheral portion.

The lid receiving frame 2 is formed of a rectangular frame having an L-shaped cross section formed by bending a metal plate, and has a vertical side wall provided with a sliding groove 4 on the outer surface of which an anchor 10 is slidably mounted. It comprises a portion 3 and a lid receiving portion 5 projecting inward at right angles from the lower edge of the side wall portion 3. The end of the lid receiving portion 5 has a bulging shape, and a mounting groove 6 to which a packing is fixed is formed at an inner corner thereof.

The anchor 10 has an L-diameter cross section and a sliding edge 11 slidably mounted in the sliding groove 4.
And the fixing side 13, which is fixed to the sliding groove 4 by the fixing screw 13 screwed into the screw hole of the sliding side 11. Further, a holding side portion 14 is further connected to the lower edge of the fixed side portion 12.

The above-mentioned cover receiving frame 2 is fixed to the peripheral opening of the inspection opening 1 by the concrete driving-in construction apparatus according to the present invention.
The concrete driving device includes a connecting rod 15, a fixing plate 16, a shielding frame 30, a curing material 31, and the like. Each configuration will be described.

Here, a connecting rod 15 composed of a screw rod is erected by a fixed plate 16 on the horizontal support frame 40. As shown in FIG. 3, the fixing plate 16 has two L-shaped locking pieces 18 and 18 formed on a substrate 17 so as to face each other with an insertion interval therebetween, and has a sliding guide groove 19 formed therein. It becomes. Then, a nut 20a is inserted from the rear end of the sliding guide groove 19, and the two side surfaces of the nut 20a are sandwiched between the inner surfaces on both sides of the sliding guide groove 19, so that the movement can be adjusted in and out. On both sides of the fixing plate 16, fixing holes 21 and 21 for driving nails are formed. The fixing plate 16 may be made of a synthetic resin. The connecting rod 15 is set up by screwing the lower part of the male screw 23 to the nut 20 a of the fixing plate 16.

As will be described later, nuts 22a and 22b are screwed on the upper portion of the male screw 23 of the connecting rod 15 as well.
Note that male screws may be separately formed at upper and lower portions of the connecting rod 15 respectively.

FIG. 4 shows a shielding frame 30, which is formed on site by cutting out a long plywood or the like. When the shielding frame 30 is formed by such means, it is not necessary to prepare several kinds of heights in advance. Moreover, the length of the shielding frame 30 may be longer than the height between the horizontal support frame 40 and the inner lower end of the lid receiving frame 2, and the cutting length is not strictly defined. It is. Note that the shielding frame 30 may be formed in advance from a metal plate.

Next, the means for fixing the lid receiving frame 2 of the floor hatch lid by the concrete driving device will be described.

First, as shown in FIG. 2, four shielding frames 30 are assembled with upper and lower corner brackets 33 to form a rectangular frame 32, and the rectangular frame 32 is horizontally supported so as to be at a floor hatch position. Positioning on the top 40, the lower corner fitting 33 is nailed and fixed to the horizontal support frame 40. After that, the fixing plate 16 is fixed outside the shielding frame 30 by the fixing holes 2.
The nails are driven into the horizontal support frame 40 on the sides 1 and 21, and are respectively disposed on the four sides. The male screw 23 of the connecting rod 15 is screwed into the nut 20a of the fixing plate 16 fixed as described above, as shown in FIG. Then, immediately above the fixing plate 16, the nut 20b is further loosely tightened to temporarily hold the front and rear position, and then the nut 22b is further screwed to determine the upper and lower positions.

Next, the lid receiving frame 2 is positioned along the outer side of the upper end of the shielding frame 30, and the through hole 14a formed in the holding side portion 14 of the anchor 10 is fitted over the connecting rod 15 on the nut 22b.

At this time, by loosening the nut 20b and appropriately adjusting the screwing position of the connecting rod 15 along the slide guide groove 19, or changing the screwing position of the nut 22b, the cover receiving frame 2 can be optionally positioned. Height and parallelism can be adjusted. Thus, the lid receiving frame 2 is at the optimum position. Then, a fixing nut 22a is screwed onto the upper end of the male screw 23, the holding side portion 14 is held between the nuts 22a and 22b, and the lid receiving frame 2 is supported on the fixing plate 16 by the connecting rod 15.

On the other hand, a square space s formed on the lid receiving portion 5 formed between the lid receiving frame 2 and the shielding frame 30 is provided with a flexible curing material such as a rod-shaped styrofoam cut out to an appropriate size on site. 31 is fitted. The flexible curing material 31 has a cylindrical cross section as shown in FIG. 5, and is embedded in an annular shape along the gap. The flexible curing material 31 is not limited to a cylindrical shape but may be a solid shape, and various cross-sectional shapes are proposed. In short, any material that provides the required flexibility may be used.

In the case where the flexible curing material 31 is applied as described above, the flexible curing material 31 is crushed by its flexibility, tightly embedded in the space s, circumscribes the shielding frame 30, and circumscribes the cover receiving frame 2. Can be covered uniformly. In addition, since it is flexible, it can be attached arbitrarily without being constrained by its outer peripheral shape, resulting in an advantage that maintenance is easy and easy.

It is to be noted that the space s is provided at an appropriate place in the space s.
By fitting the wood piece 34 having the same width as that of the above, it is possible to hold the lid receiving frame 2 against the pressing force of the concrete and prevent the lid receiving frame 2 from warping. This piece of wood 3
4 is an example of a curing material. In addition, a cardboard material, a tape, a piece of wood, or the like may be applied as a curing material.

The horizontal support frame 4 around the shielding frame 30
Concrete 41 is poured on the top of the floor, and a floor finishing material 42 such as a tile is laid on the upper surface of the concrete 41. At this time, the flexible curing material 31
The concrete 41 does not enter the mounting groove 6 of the lid receiving frame 2 due to the driving of the concrete 41. After the concrete 41 has solidified, the horizontal support frame 40, the shielding frame 30, and the flexible curing material 31 are sequentially removed. As a result, as shown in FIG. 1, the lid receiving frame 2 is buried and constructed with the concrete 41 and the floor hatch defined by the shielding frame 30 is formed.

[0022]

According to the present invention, a plurality of connecting rods 15 are mounted on a horizontal supporting frame 40 around a shielding frame 30 by a fixing plate.
The cover receiving frame 2 is fixed to the connecting rod 15, and a gap s on the lid receiving portion 2 generated between the lid receiving frame 2 and the shielding frame 30 is shielded by the curing material 31. After that, concrete 41 is driven around the outside, so it is completed by one-time concrete driving,
The construction period is greatly reduced. Further, in the configuration in which the flexible curing material 31 is embedded between the lid receiving frame 2 and the shielding frame 30 to prevent the mortar from flowing into the inside of the lid receiving frame 2, the shape is restricted. However, it can be attached arbitrarily, and has excellent effects such as simple and easy maintenance and management.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a construction state of the present invention.

FIG. 2 is a plan view of the lid receiving frame 2 before concrete is poured.

FIG. 3 is an exploded perspective view of a fixing plate 16;

4 is a perspective view of the shielding frame 30. FIG.

5 is a perspective view of a flexible curing material 31. FIG.

FIG. 6 is a vertical sectional side view showing a construction step of a conventional means.

[Explanation of symbols]

2 cover receiving frame 4 sliding groove 10 anchor 15 connecting rod 16 fixing plate 20a, 20b nut 30 shielding frame 31 flexible curing material 40 horizontal support frame

Claims (2)

(57) [Claims] 1. A vertical side wall portion comprising a rectangular frame having a substantially L-shaped cross section and having an anchor fixed to an outer surface thereof, and a lid receiving portion projecting inward at right angles from a lower edge of the side wall portion. A connecting rod that stands on a horizontal support frame that supports mortar, and that fixes the anchor at an upper end so that the height can be adjusted, and that supports the lid receiving frame at a predetermined height. And the nut on which the connecting rod is screwed is set inward and outward.
Horizontal support with sliding guide grooves for supporting dynamic adjustment
A fixed plate fixed on the holding frame, and mounted on the horizontal support frame, inscribed in the lid receiving frame supported by the connecting rod, cut off the mortar driven into the outer peripheral portion of the lid receiving frame, and cut off the hatch. A concrete installation system for a floor hatch, comprising: a shielding frame for defining an inner peripheral surface of an entrance; a lid receiving frame; and a curing material for shielding a gap on the lid receiving portion generated between the shielding frames. 2. An apparatus according to claim 1, wherein said curing material is a flexible curing material.