JPH0337602B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a lath that is stretched in place of concrete formwork plates on both left and right sides of a steel frame structure for underground beams when constructing underground beams. The present invention relates to a hanging device for hanging a wire mesh from the steel structure.

(Prior art and its problems) Conventionally, in order to suspend the lath wire mesh from a steel structure, the lower ends of a pair of left and right support rods are fixed to the steel structure by welding, and the upper ends of the support rods are fixed to the steel structure by welding. A horizontal rod was supported, and a piece of wood to which the upper end of the lath wire mesh was fixed was nailed to both ends of the horizontal rod. This method requires on-site welding work, which is costly, and also fails to improve work efficiency.

(Means for Solving the Problems) The present invention proposes a lath wire mesh hanging device that can solve the above-mentioned conventional problems, and its features are as follows: a pair of connecting members that are respectively connected to the upper left and right pair of main reinforcements;
These two connecting members each include a horizontal rod for hanging a lath wire mesh that is supported via a screw shaft so that the height can be adjusted, and the connecting member has a side opening fitting for fitting the main reinforcement from the side. a locking hole, a vertically penetrating screw hole through which the screw shaft is screwed and passed through, and the connecting member is prevented from rotating inwardly around the main reinforcement by coming into contact with a hoop reinforcement in the reinforcing steel structure. a rotation stopper portion is provided, and the vertically penetrating screw hole is provided at a position where the lower end of the screw shaft that is screwed into and passes through the screw hole can be pressed against the main reinforcing rod that is fitted into the horizontally opening fitting and locking hole. .

(Function) In the device of the present invention as described above, when the connecting member is fitted from the side to each of the upper main reinforcements of the underground beam steel structure using the horizontally opening fitting holes,
The connecting member can be fixed to the main reinforcement by screwing a screw shaft whose lower end is threaded through the vertically penetrating screw hole of the connecting member and pressing the lower end against the main reinforcement. Then, the horizontal rod is supported at a predetermined height by the upper end of the screw shaft, and the fixed pieces of wood at the upper end of the lath wire mesh are fixed to both ends of the horizontal rod by a method such as nailing. can be suspended on both the left and right sides of the steel structure. Alternatively, when nailing a lath wire mesh hanging rod to the end of the horizontal rod, the rotation preventing portion prevents the connecting member from rotating inwardly with respect to the main reinforcement, so that the horizontal rod is There is no possibility of turning the screw shaft and the connecting member in the nailing direction.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a connecting member having the same structure, and as shown in FIG. A locking hole 4 is cut and a rotation stopper part 5 is provided at right angles from the lower ends of the legs 3a and 3b to the left and right outer sides, and is fixed to the ceiling part 6 of the portal part 2 by welding. A vertically penetrating screw hole is provided using the nut 7. Reference numeral 8 denotes a screw shaft whose lower end is screwed into and passes through the through screw hole of the connecting member 1 (the screw hole of the nut 7), and a receiving seat 9 and a fixing nut 10 are screwed into the screw shaft. 1
Reference numeral 1 denotes a horizontal rod, which is provided with vertical through holes 12 at two locations on the left and right, through which the screw shaft 8 passes. 13
is a lath wire mesh used as a concrete formwork board, and a hanging bar 14 is attached in advance to its upper end.

As shown in FIGS. 1 and 2, the connecting member 1 has horizontally opening fitting holes in a pair of left and right main reinforcements 16a and 16b on the upper side of the steel structure for underground beams 15 at positions adjacent to hoop reinforcements 17. Use 4 to fit from the side,
With one side edge of either the left or right rotation stopper portion 5 in contact with the inside of the hoop reinforcement 17, the screw shaft 8 is screwed downward, and the lower end of the screw shaft 8 is attached to the main reinforcement 1.
It is fixed to the main reinforcing bars 16a, 16b by pressing the upper surfaces of the bars 6a, 16b. At this time, main reinforcement 1
The width of the rotation stopper part 5 (the position of the side edge of the rotation stopper part 5 with respect to the horizontal opening fitting locking hole 5) is set so that the screw shaft 8 stands approximately vertically regardless of the horizontal orientation of the connecting member 1 with respect to 6a and 16b. has been done.

Once the connecting members 1 are fixed to both the main reinforcements 16a and 16b as described above, the horizontal rods 11 are fixed to both the screw shafts so that the screw shafts 8 rising from both the connecting members 1 are inserted into the through holes 12. 8 and supported by a receiving seat 9. After adjusting the height and horizontality of the horizontal rod 11 by adjusting the height of the receiving seat 9, the nuts 10 are screwed onto each screw shaft 8, and the horizontal rod 11 is fitted onto each screw shaft 8. Both screw shafts 8
Fixed to. Next, the rods 14 from which the lath wire mesh 13 is hung are fixed to both ends of the horizontal bars 11 using nails 18, respectively. Since the rotation stopper portion 5 comes into contact with the hoop bar 17 and prevents the horizontal bar 11 from rotating to either the left or right side together with the screw shaft 8 and the connecting member 1, it is possible to prevent the horizontal bar 11 from rotating to either the left or right side. The horizontal rod 11 does not swing in the striking direction.

Note that the structure of the connecting member 1 is not limited. For example, as shown in FIG. 4, a nut 7 is connected to the upper wall portion 20 to which the nut 7 is welded at a right angle inward from the upper end of the plate material 19 bent into a substantially J shape, and the nut 7 is connected to the upper wall portion 20 and the plate material. A laterally opening fitting locking hole 4 is formed between the lower end bent portion 21 of the lower end 19, and a plate material 22 extending on both left and right sides is fixed to the lower side of the lower end bent portion 21 by welding,
Both left and right end portions of this plate material 22 can be used as rotation stop portions 5. In addition, although the nut 7 was used as the vertically penetrating screw hole through which the screw shaft 8 is threaded, if the plate thickness of the connecting member 1 is sufficient, the screw hole can be directly machined, or if the plate thickness is thin. Even in this case, a cylindrical portion may be provided by burring, and a threaded groove may be formed on the inner periphery of this cylindrical portion to form a threaded hole.

(Effects of the Invention) As described above, according to the device for suspending lath wire mesh for concrete formwork of the present invention, lath wire mesh can be easily hung using the pair of upper left and right main reinforcements of the steel structure for underground beams. I can do it. Moreover, the height and horizontality of the horizontal rod to which the upper end of the lath wire mesh is attached can be adjusted freely, and the horizontal rod can be firmly supported so that it cannot be turned to either the left or right side. It is also possible to securely and easily nail the rod from which the frame is hung to the end of the horizontal rod.

[Brief explanation of the drawing]

Figure 1 is a longitudinal front view, Figure 2 is a side view of the main parts,
3 and 4 are perspective views of the connecting member. DESCRIPTION OF SYMBOLS 1... Connecting member, 4... Laterally opening fitting locking hole, 5... Rotation stopper part, 7... Vertically penetrating screw hole forming nut, 8... Screw shaft, 9... Receiving seat, 10... Fixing nut, 11... Horizontal Rod, 13... Lath wire mesh, 14... Saki,
15... Steel frame structure for underground beams, 16a, 16b... Main reinforcement, 17... Hoop reinforcement, 18... Nail.

Claims (1)

[Claims] 1 A pair of connecting members that are connected to the upper left and right pair of main bars of the underground beam reinforcing structure, and horizontal rods for hanging lath wire mesh that are supported by both connecting members via screw shafts so that their height can be adjusted. The connecting member includes a horizontally opening fitting locking hole for laterally fitting into the main reinforcement, a vertically penetrating threaded hole through which the screw shaft is screwed, and the connecting member is connected to the main reinforcement. A rotation stopping portion is provided which abuts against a hoop muscle in the reinforcing steel structure and prevents it from rotating inwardly around A hanging device for a lath wire gauze for concrete formwork, which is provided at a position where it can be pressed against the main reinforcing bars fitted in the horizontally opening fitting and locking holes.