JPH05141041A - Panel made of concrete - Google Patents

Abstract

PURPOSE:To obtain a panel made of concrete, the number of parts and steps for mounting of which can be reduced. CONSTITUTION:A long nut 15 with a tapped hole 4 for mounting a hanging bolt is housed into a light-weight aerated concrete board 2A so that the tapped hole 4 for mounting the hanging bolt is directed in the thickness direction of the concrete board 2. One end face of the long nut 15 is exposed from the external surface of the concrete board, a bolt 9 protruded from a frame 1 is screwed with the other end side of the long nut 15 while leaving the tapped hole for mounting of the hanging bolt on one end side of the long nut 15, and the concrete board is fixed to the frame 1. The hanging bolt 3 is screwed with the long nut 15 exposed from the external surface of the concrete board as required. Accordingly, operation, in which the nut is set up to the frame, can be omitted.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to concrete panels. For example, it can be used for concrete floor panels for balconies.

[0002]

[Background Art] When manufacturing a building unit used in the unit construction method, a building unit is manufactured for each element unit, and after the building unit is lifted and transported to an assembly position, there is a work process in which these are combined. It is necessary to previously provide a suspension bolt mounting screw hole for screwing a suspension bolt for suspending each element unit for each element unit. Alternatively, since each building unit manufactured in this way must be transported to the construction site by a truck or the like, and then assembled using a crane or the like, it is necessary to carry out the loading and unloading on the truck or the assembling. It is necessary to previously provide a suspension bolt mounting screw hole for screwing the suspension bolt for each unit.

For example, in the case of a concrete floor panel constituting a balcony unit, as shown in FIG. 4, a predetermined thickness is provided along the longitudinal direction of the frame 1 framed in a rectangular shape by the short-side beams 1A and the long-side beams 1B. And a plurality of lightweight cellular concrete plates 2 and 2A formed in a plate shape having a width are arranged side by side, and the lightweight cellular concrete plates 2A on both sides are formed to be shorter than the other plates 2 so that four corners of the frame 1 are formed. A nut 5 having a hanging bolt attachment screw hole for screwing a hanging bolt to the exposed corners of the frame 1 is provided, and a rectangular cement plate 6 having the nut 5 cut out is provided in the frame 1. It has a structure in which it is attached substantially flush with the upper surface of the lightweight cellular concrete plate 2 at the four corners.

Conventionally, in manufacturing the concrete floor panel, as shown in FIG. 5, the short side beam 1 of the frame 1 is used.
Attach the nut 5 to the end of A via the bracket 7,
The hanging bolt 3 can be appropriately screwed into the hanging bolt mounting screw hole 4 of the nut 5. Further, as shown in FIG. 6, bolt through holes 8 having counterbore holes on the upper surface are formed on both ends in the longitudinal direction of the lightweight cellular concrete plate 2A, and the bolt through holes 8 are formed from the auxiliary frame 1C of the frame 1. The bolts 9 projecting upward are inserted, and the nuts 10 are screwed into the bolts 9 projecting upward so that both ends of the lightweight cellular concrete plate 2A are fixed to the frame 1. Although not shown, the fixing of the other lightweight cellular concrete boards 2 is the same as in FIG.

[0005]

However, in the above structure, in addition to the work of fixing both end sides of each lightweight cellular concrete plate 2, 2A to the frame 1, the nut 5 for screwing and mounting the hanging bolt 3 is used. Need to be attached to the four corners of the frame 1 via the brackets 7. That is, since the bracket 5 must be welded to the four corners of the frame 1 after the nut 5 is welded to the bracket 7, there are disadvantages that the number of parts is large and the mounting man-hour is also required.

[0006] It is an object of the present invention to provide a concrete panel which can eliminate such conventional drawbacks and reduce the number of parts and the number of mounting steps.

[0007]

Therefore, in the concrete panel of the present invention, the concrete plate is spread over the frame and the hanging bolt mounting screw holes for screwing the hanging bolts are formed at the corners. In the manufactured panel, inside the concrete plate, a nut member having the screw hole for mounting the hanging bolt is stored so that the screw hole for mounting the hanging bolt is in the thickness direction of the concrete plate, and one end surface of this nut member is It is characterized in that it is exposed from the outer surface of the concrete plate, and the other end side of the nut member and the frame are fastened by a fastening member while leaving a hanging bolt mounting screw hole at one end side of the nut member.

[0008]

A nut member having a screw hole for mounting a hanging bolt is housed inside a concrete plate in the thickness direction of the concrete plate, and a screw hole for mounting a hanging bolt on one end side of the nut member is left to leave a nut. Since the other end side of the member and the frame are fastened by the fastening member, the concrete plate can be fixed to the frame by simply fastening the other end side of the nut member and the frame by the fastening member. If necessary, the suspension bolt can be screwed and attached to the suspension bolt attachment screw hole on one end side of the nut member exposed from the outer surface of the concrete plate. Therefore, it is possible to eliminate the conventional work of attaching the nuts for screwing the suspension bolts to the four corners of the frame, and it is possible to reduce the number of parts and the number of attachment steps.

[0009]

Embodiments of the present invention will now be described in detail with reference to FIGS. 1, 2 and 3. In the following examples, the lightweight cellular concrete boards 2A located at both ends of the concrete floor panel are different in fixing structure from the conventional structure, and only that part will be described.
In addition, in explaining the above-mentioned drawings, FIGS.
The same constituents as those in FIG. 6 are designated by the same reference numerals, and the description thereof will be omitted or simplified.

First Embodiment A first embodiment is shown in FIG. In the figure, the lightweight cellular concrete boards 2A are located at the ends of the lightweight cellular concrete boards 2A located at both ends of the concrete floor panel.
A through hole 11 is formed so as to penetrate in the thickness direction. The through hole 11 has a large-diameter hole 12 having a length that reaches approximately half the thickness of the lightweight cellular concrete plate 2A from the upper surface in the thickness direction, and the lightweight cellular concrete plate from the inner bottom surface of the large-diameter hole 12. It is composed of a small diameter hole 13 opened on the lower surface of 2A.

As a nut member having the hanging bolt mounting screw hole 4 in the large diameter hole 12 through a washer 14 having an outer diameter smaller than the large diameter hole 12 and larger than the small diameter hole 13. The long nut 15 is housed so that the hanging bolt mounting screw hole 4 is in the thickness direction of the lightweight cellular concrete plate 2A. The length dimension of the long nut 15 is formed so that the upper end surface of the long nut 15 is exposed so as to substantially coincide with the upper surface of the lightweight cellular concrete plate 2A.

Further, the hanging bolt mounting screw hole 4 on one end side of the long nut 15 is left, and the other end side of the long nut 15 passes through the small diameter hole 13 and projects upward from the auxiliary frame 1C. The bolt 9 provided is screwed together. Here, the bolt 9 constitutes a fastening member for fastening the other end side of the long nut 15 and the auxiliary frame 1C while leaving the hanging bolt mounting screw hole 4 on one end side of the long nut 15.

Therefore, according to the first embodiment, the frame 1
The lightweight cellular concrete board 2A is arranged at a predetermined position of the above, and the small diameter hole 13 of the through hole 11 is inserted into the bolt 9 projecting upward from the auxiliary frame 1C, and the large diameter hole 12 is formed.
A long nut 15 is inserted through a washer 14 into the bolt 9 protruding inward.
The lightweight cellular concrete plate 2A can be fixed to the frame 1 by screwing and tightening, and at the same time, one end side of the long nut 15 exposed on the upper surface side of the lightweight cellular concrete plate 2A as required during transportation. The hanging bolt 3 can be screwed onto the.

Therefore, since the hanging bolt 3 can be screwed and attached to the bolt 9 of the frame 1 by using the long nut 15 for fixing the lightweight cellular concrete plate 2A, the hanging bolt can be screwed as in the conventional case. It is possible to reduce the number of parts because a dedicated nut for doing so and a bracket for attaching it can be eliminated. At the same time, the work of attaching them can be eliminated, so that the number of attachment steps can be reduced.

Second Embodiment A second embodiment is shown in FIG. In the figure, at the end portions of the lightweight cellular concrete plate 2A located at both ends of the concrete floor panel, a storage hole 21 having a length reaching approximately half of its thickness from its upper surface in the thickness direction.
Are formed. A locking piece 22 as a nut member is housed in the housing hole 21. The locking piece 22 has the hanging bolt mounting screw hole 4 formed at one end side exposed on the upper surface side of the lightweight cellular concrete plate 2A along the thickness direction of the lightweight cellular concrete plate 2A and has a bottom at the other end. It is formed in a cylindrical shape having a wall 23. Then, a driving screw 24 is driven into the auxiliary frame 1C through the bottom wall 23 and the lightweight cellular concrete plate 2A.
Here, the driving screw 24 constitutes a fastening member for fastening the other end side of the locking piece 22 and the auxiliary frame 1C while leaving the hanging bolt mounting screw hole 4 on one end side of the locking piece 22. ..

Therefore, according to the second embodiment, in addition to the effect described in the first embodiment, the driving screw 24 penetrates the locking piece 22 and is driven into the auxiliary frame 1C.
The lightweight cellular concrete plate 2A can be easily fixed to the frame 1.

Third Embodiment A third embodiment is shown in FIG. In the figure, reinforcing bar 31 is embedded in advance inside the lightweight cellular concrete board 2A located at both ends of the concrete floor panel. A long nut 32 that constitutes a nut member is welded to the bar arrangement 31 in advance. The long nut 32 is welded so that the hanging bolt mounting screw hole 4 thereof is parallel to the thickness direction of the lightweight cellular concrete plate 2A, and both end surfaces thereof are exposed so as to substantially coincide with the upper and lower surfaces of the lightweight cellular concrete plate 2A. The length dimension is formed so that

A suspension bolt 3 is screwed to one end of the long nut 32, if necessary. Further, a bolt 9 protruding upward from the auxiliary frame 1C is screwed to the other end of the long nut 32, leaving the hanging bolt mounting screw hole 4 on one end of the long nut 32. Here, the bolt 9 constitutes a fastening member that fastens the other end of the long nut 32 and the frame 1 while leaving the hanging bolt mounting screw hole 4 on the one end side of the long nut 32.

Therefore, according to the third embodiment, in addition to the effects described in the first embodiment, the external force transmitted from the bolt 9 and the suspension bolt 3 is transmitted to the reinforcing bar 31 via the long nut 32. Lightweight cellular concrete 2 due to these external forces
The effect of preventing breakage of A can be expected.

In each of the above embodiments, an example using lightweight cellular concrete is described, but it may be simply made of concrete.

[0021]

As described above, according to the concrete panel of the present invention, the effect that the number of parts and the number of steps can be reduced can be expected.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a sectional view showing a second embodiment of the present invention.

FIG. 3 is a sectional view showing a third embodiment of the present invention.

FIG. 4 is a plan view showing a conventional lightweight cellular concrete floor panel.

5 is a sectional view taken along line VV of FIG.

6 is a sectional view taken along line VI-VI of FIG.

[Explanation of symbols]

 1 Frame 2, 2A Lightweight cellular concrete plate 4 Screw holes for mounting hanging bolts 9 Bolts (fastening members) 15 Long nuts (nut members) 21 Locking pieces (nut members) 24 Driving screws (fastening members) 32 Long nuts (nut members) )

Claims (1)

[Claims] 1. A concrete panel in which concrete frames are spread over a frame, and screw holes for attaching hanging bolts for screwing and attaching hanging bolts are formed at corners. In the concrete panel, the hanging bolts are provided inside the concrete plate. A nut member having a mounting screw hole is housed so that the hanging bolt mounting screw hole is in the thickness direction of the concrete plate, and one end face of this nut member is exposed from the outer surface of the concrete plate, and A concrete panel, characterized in that the other end side of the nut member and the frame are fastened by a fastening member, leaving the hanging bolt mounting screw hole at the one end side.