JPH0214603Y2 - - Google Patents

Description

[Detailed description of the invention] To attach or remove a nut to a threaded reinforcing bar that has threads extending along both outer peripheries of the long diameter side of a flat round bar, the nut must be screwed in from the end of the threaded reinforcing bar, then unscrewed. The operation is difficult because it has to be done.

Therefore, in order to eliminate the above-mentioned defects, the present invention makes use of the flat shape of the threaded reinforcing bar so that it can be attached and detached from the side at any location on the threaded reinforcing bar, and it can also be securely fixed by screwing into the threaded reinforcing bar. This invention relates to a latch for screw reinforcing bars that is convenient for work.

To explain the structure of one embodiment of the present invention shown in Figs. 1 to 6, 1 is a threaded reinforcing bar used for concrete construction, and screws 2 are provided along both outer peripheries of the long diameter side of a flat round rod. It becomes. 3 is the flat side plane.

a indicates a hook for screw reinforcing bars, and 4 is the main body of hook a, which is U-shaped to fit on the flat side of threaded reinforcing bar 1, and has a hexagonal outer circumferential surface and a screw inside thereof. A female screw 5 is installed to be screwed into the screw 2 of the reinforcing bar 1, a screw hole 6 is provided in the center of the main body 4 that penetrates to the female screw 5, a recess 7 is formed on the outside of the screw hole 6, and a hook bolt is inserted into the screw hole 6. 8 to form the hook a.

Note that 9 is a hanging ring made of wire rope that is inserted into the ring of the hook bolt 8.

Next, its effect will be explained. As shown by the solid line in FIG. 4, after unscrewing the hook bolt 8 of the latch a and inserting its tip edge into the screw hole 6, fit the main body 4 into an appropriate location of the threaded reinforcing bar 1 from its large diameter side. At the same time, the female screw 5 of the main body 4 is screwed into one side of the screw 2 of the threaded reinforcing bar 1.
Therefore, as shown by the chain line in Fig. 4, the latch a
After rotating the hook bolt 8 by 90 degrees to the side, screw the hook bolt 8 until it hits the bottom of the recess 7, and as shown in FIG. The main body 4 is screwed onto the threaded reinforcing bar 1 by screwing on both sides, and the tip edge of the hook bolt 8 hits the flat surface 3 of the threaded reinforcing bar 1, so that rotation of the main body 4 with respect to the threaded reinforcing bar 1 is prevented. The latch a is kept screwed onto the threaded reinforcing bar 1.

Therefore, in concrete construction, (a) When moving a long heavy threaded reinforcing bar 1, attach it to the required location of the threaded reinforcing bar 1 of the latch a, lift the hanging ring 9 of the latch a with a crane, and move the threaded reinforcing bar 1. move.

(b) When connecting threaded reinforcing bars 1 in horizontal floor reinforcement, foundation beams, etc., attach the latch a to the required location of the threaded reinforcing bar 1, and use the crane to remove the latch by operating in the same manner as in (b) above. Threaded reinforcing bar 1 to be connected by lifting or pulling threaded reinforcing bar 1 through a
Align the center line of and the thread of screw 2.

(c) When using vertical reinforcement, for example, when suspending a coupler nut tightening machine with a balancer, etc., attach latch a to the top of threaded reinforcing bar 1 and hang the machine from the hanging ring 9 of latch a.

(d) Attach the hook a to any location on the threaded reinforcing bar 1, hang a jig, tool, etc. from the hanging ring 9, and use it as a hook, hanger, etc. for a member to be attached to the threaded reinforcing bar 1.

It can be used for etc.

In addition, when removing the latch a from the threaded reinforcing bar 1, unscrew the hook bolt 8 and insert its tip edge into the screw hole 6, contrary to the above, and then
When latch a is rotated 90 degrees to the side so that its main body 4 is fitted to the flat side of threaded reinforcing bar 1 as shown by the solid line in Fig. 4, and pulled outward, latch a can be removed. be done.

On the other hand, instead of the threaded reinforcing bar 1, as shown in FIG. 7, a threaded reinforcing bar 1' having an elliptical cross section and having screws 2' provided along both outer peripheries on the long diameter side, can also be used.
The latch fitting a can be attached and detached by operating in the same manner as described above.

The main body 4 of the above-mentioned latch a may be made by forging or casting, or may be made by bending a flat metal plate with screws on one side into a U-shape toward the screw side. good.

In the present invention, the hook for threaded reinforcing bar is constructed as described above, so the body is fitted onto the flat side of the threaded reinforcing bar at any point, rotated 90 degrees, and the hook bolt is screwed in, so that it is screwed onto the threaded reinforcing bar and fixed. On the other hand, when operated in the opposite manner to the above, it is removed from the threaded reinforcing bar, making it extremely easy and quick to attach and detach the hook to the threaded reinforcing bar. Therefore, there is no risk of it rotating and coming off from the threaded reinforcing bar, and the fixing of the latch is reliable, firm, and safe.

Furthermore, since the threaded reinforcing bar can be attached and detached from the side at any point, it can be easily attached and detached even on top of other threaded reinforcing bars or the floor, and there is no problem with long threaded reinforcing bars. Even if the threaded reinforcing bar protrudes for a long time or the upper end of the threaded reinforcing bar is buried in the concrete wall, it can be easily attached to and removed from the threaded reinforcing bar, making it convenient for work.

Furthermore, the force applied to the latch is supported by the mutually threaded threads of the latch and the threaded reinforcing bar, so it can sufficiently bear large loads, and the structure is extremely simple and can be manufactured easily and inexpensively. There are effects such as obtaining.

[Brief explanation of the drawing]

Fig. 1 is a front view of a latching fitting for threaded reinforcing bars according to an embodiment of the present invention, Fig. 2 is a plan sectional view, Fig. 3 is a side view, and Figs. 4 and 5 show the latching fitting for threaded reinforcing bars. FIG. 4 shows a state in which the latch fitting is fitted to the threaded reinforcing bar, and FIG. 5 shows a state in which the latch fitting is fixed to the threaded reinforcing bar. FIG. 6 is a side view of the state shown in FIG. 5, and FIG. 7 is a front sectional view showing another example of the threaded reinforcing bar. 1...Screw reinforcing bar, 2...Screw, 4...Body, 5
...Female thread, 6...Screw hole, 8...Hook bolt.

Claims (1)

[Scope of utility model registration request] A main body is formed in a U-shape that fits on the flat side of a threaded reinforcing bar with threads provided on both outer peripheries of the long diameter side of the flat round bar, and the thread of the threaded reinforcing bar is screwed into the inside of the main body. A latch for a threaded reinforcing bar, which is equipped with a female screw, has a screw hole in the center that penetrates to the female screw, and has a hook bolt passed through the screw hole.