JP2576403Y2 - Temporary fixing metal fittings used when press-fitting existing column bars and pre-assembled column bars - Google Patents

Description

[Detailed description of the invention]

[0001]

Industrial Applicability The present invention relates to a crimping work in which a crane pre-assembled by a crane is used to press the pre-assembled strut over an existing strut. The present invention relates to a temporary fixing fitting for temporarily attaching a pressure welding device by temporarily fixing on the same axis without shaking.

[0002]

2. Description of the Related Art Conventionally, in a case where a pre-assembled column bar, which has been lifted by a crane above an existing column column, is pressed by using a crimping device, the existing column column and the pre-column column are temporarily fixed on the same axis. There were no fasteners.

[0003]

As described above, in the conventional crimping work of the pre-assembled column bar, the joint between the existing column bar and the pre-assembled column bar is temporarily fixed on the same axis to mount the crimping device. Since there are no temporary fasteners and the pre-assembled column is lifted by a crane, the pre-assembled column is shaken and fixed to the existing column along the same axis, and the crimping device is attached to the joint. Has the problem that it takes a lot of trouble.

SUMMARY OF THE INVENTION [0004] The present invention aims to solve the above-mentioned conventional problems and to provide a temporary fixing fitting used for press-fitting an existing column bar and a pre-assembled column bar.

[0005]

SUMMARY OF THE INVENTION The present invention provides a semicircular semicircular pipe having a steel pipe having a diameter slightly larger than the diameter of an existing column bar and a pre-assembled column bar. The clamping pieces are made openable and closable, and a clamping means is attached to each of the clamping pieces so that the clamping pieces can be narrowly closed to fix the inner wall surfaces of the semicircular clamping pieces. The above problem has been solved by adopting such means.

[0006]

According to the present invention having the above-described structure, the joint between the upper end of the existing column and the lower end of the pre-assembled column which is lifted by the crane is fixed on the same axis without being shaken by the temporary fixing metal. Is done.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a cage suspended by a crane at the upper end of an existing pillar 2 having a lower portion embedded and fixed in a foundation 1. The state where it contacted from the lower end part of the pre-assembled column bar 3 arranged in a shape is shown. A temporary fixing member A for temporarily fixing the three existing column bars 2 and the pre-assembled column bars 3 in FIG.

[0008] The temporary fixing member A is provided with a shaft 5 on the outer periphery of central portions of long half pipes 4a and 4b obtained by vertically dividing a steel pipe having a diameter slightly larger than the diameter of the existing column 2 and the pre-assembled column 3 into two. Is used as a support shaft to make the semicircular holding pieces 6a and 6b openable and closable,
Each clamping piece 6a, 6a, 6c of the clamp 8 formed so that the clamping pieces 6a, 6b can be clamped by the clamping means 7.
6b is formed by welding and fixing the inner wall surface.

The tightening means 7 need not be particularly limited, but preferably, the base of the tightening bolt 10 is rotatably supported on the projecting pieces 9a, 9b projecting from the tip of the one holding piece 6a. And two protruding pieces 11 are provided at the tip of the other holding piece 6b with an interval of the width of the tightening bolt 10.
a, 11b are projected, the forward end of the tightening bolt 10 is inserted between the projecting pieces 11a, 11b, and the fixing nut 12 is screwed into the tightening bolt 10 to thereby fix the fixing nut 1
2 is pressed into contact with each of the projecting pieces 11a and 11b,
It is recommended that a and 6b be formed so that they can be closed.

The lengths of the long half tubes 4a and 4b need not be particularly limited, but are preferably at least vertically sufficient around the joint J between the existing column 2 and the pre-assembled column 3. At least 20-30c so that it can be coated with
It is recommended to have a length of m.

Next, the operation of the embodiment of the present invention will be described. The lower ends of the pre-assembled column bars 3 arranged in a cage shape hung by a crane abut against the upper ends of the plurality of existing column bars 2 protruding on the foundation 1, and at least about half of the plurality of existing column bars 2 A temporary fixing metal A is fitted and fixed to the joint J between the column 2 and the front column 3. In this fitting and fixing method, the clamping pieces 6a and 6b of the clamp 8 are pivoted inward so as to cover the joint J, and the tightening bolt 10 is inserted between the protruding pieces 11a and 11b. The fixing nut 12 is tightened to the bolt 10 to press the holding pieces 6a and 6b against the outer peripheral surfaces of the existing column 2 and the pre-assembled column 3 near the joint J. This allows
Each of the pre-assembled pillars 3 is fixed on the same axis without swinging on the corresponding existing pillars 2.

Then, a crimping device (not shown) is attached to the joint J to which the temporary fixing metal A is not fixed, and the pressure welding is performed by heating. After the pressure welding has been completed, the crimping device is attached to the existing column 2 and the pre-assembled column 3 to which the temporary fixing metal A has been attached, then the fixing nut 12 is loosened to remove the temporary fixing metal A, and the joint J
Is heated and pressure welded. In the same manner, the joint J at the portion where the temporary fixing fitting A is attached is press-welded.

[0013]

[Effects of the Invention] Since the present invention is as described above, the holding column of the temporary fixing metal is pressed and fixed so as to cover the joint between the existing column bar and the pre-assembled column bar. The lower end of the pre-assembled column bar suspended by a crane at the upper end of
Since it is fixed on the same axis without shaking, there is an excellent effect that the pressure welding device can be easily and quickly mounted.

[Brief description of the drawings]

FIG. 1 is a front view showing a state in which a temporary fixing bracket of the present invention is attached to a joint between an existing column bar and a pre-assembled column bar.

FIG. 2 is an enlarged front view of a main part showing a state in which a temporary fixing fitting of the present invention is attached to a joint between an existing column bar and a front column column bar.

FIG. 3 is an enlarged perspective view showing a temporary fixing metal used when the existing column and the pre-assembled column are pressed against each other.

[Explanation of symbols]

2 Existing column reinforcement, 3 Pre-assembled column reinforcement, 4a, 4b Long half pipe, 6a, 6b clamping piece, 7 Tightening means, 8
Clamp, A Temporary fastener, J joint.

Claims (1)

(57) [Scope of request for utility model registration] 1. A semicircular holding piece is freely openable and closable on the outer periphery of a central portion of a long half pipe obtained by vertically dividing a steel pipe having a diameter slightly larger than the diameter of an existing pillar and a pre-assembled pillar. A clamp formed by attaching a fastening means to each of the holding pieces so that each of the holding pieces can be narrowly closed, and a pre-assembly with an existing pillar formed by fixing an inner wall surface of each of the semicircular holding pieces. Temporary fixing metal fittings used when crimping column bars.