JPH067178Y2 - Temporary joining hardware for steel pipe columns - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a temporary joining metal article for a steel pipe column, which temporarily fixes a steel pipe forming a column until the connection is completed.

(Problems to be solved by the invention) Conventionally, steel pipes (square steel pipes) are connected between plates as shown in FIG. 8 and FIG. 9 between erection pieces projected on both outer circumferences for positioning at the time of joining. It is carried out by straddling this, bolting this plate to a piece, and welding both steel pipes in a temporarily fixed state.In this method, the erection piece used for temporary fixing is used for the connection with other members. Since it becomes an obstacle, it has to be cut and removed after the completion of the main joining, which requires time and effort for connection work, and at the same time,
It is uneconomical because it wastes steel materials.

The present invention has been made by paying attention to the problem of the conventional method of temporarily fixing the steel pipe, and is intended to newly propose a metal for temporary fixing which does not require labor and is wasteful.

(Means for Solving the Problem) In the present invention, a backing metal for temporary connection is joined to the inner circumference of the steel pipe,
By welding both steel pipes using this backing metal, the removal after the main joining becomes unnecessary, and at the same time, the waste of steel materials is eliminated.

The backing metal is inscribed in advance on one of the steel pipes and joined, and a laterally long slot is formed on the peripheral surface, or a nut is pre-bonded on the inner peripheral surface.

When the long hole is opened, a deformed bolt having a long head in one direction is inserted into the long hole, and a handle which is screwed or engaged from the outside of the steel pipe is attached to the shaft portion thereof.

The steel pipe facing the steel pipe to which the backing plate is joined is temporarily fixed to the steel pipe on the side of the backing plate by rotating the deformed bolt with a handle and locking it inside the steel pipe.

When a nut is joined to the backing plate, a bolt is screwed into the nut, and a fastening metal fitting that abuts the outer peripheral surface of both steel pipes that are connected to each other is screwed into the bolt, and the bolt is screwed into the backing plate. The steel pipe to be joined later is temporarily fixed to the steel pipe on the side of the backing plate by tightening the bolt by the rotation of the tightening fitting and bringing the steel pipe into close contact with the backing plate.

(Embodiment) The present invention will be described below with reference to the drawings illustrating an embodiment.

The temporary joining metal A of the present invention is connected to each other and positions the two when joining the steel pipes 1, 1 which form a column by welding.
It is a temporary stop.

First, the invention described in the first claim will be described.

As shown in FIG. 1, the temporary joining metal A is preliminarily inscribed and joined to one of the steel pipes 1 in advance, and a backing metal 2 shown in FIG. The deformed bolt 3 shown in FIG. 5 having a head 3a long in one direction that can be inserted into the long hole 2a of the backing plate 2, and the handle 4 shown in FIG. 6 in which a hole for inserting the shaft portion is opened. The deformed bolt 3 is rotated by the handle 4 to be locked inside the steel pipe 1, and in this state, the nut 5 is tightened from the outside of the handle 4 so that the other steel pipe 1 is connected to the one steel pipe 1.
It is temporarily fixed to.

As shown in FIG. 1, the two steel pipes 1 and 1 are butted against each other with a distance for inserting the deformed bolt 3 between the end faces, and the temporary joining metal A is laid across the steel pipes 1 and 1 with this gap. Will be placed.

The deformed bolt 3 is inserted from the outside of the steel pipe 1 into the elongated hole 2a with the head 3a lying down, and screwed or engaged with this to rotate by the handle 4 which transmits a rotational force, so that the steel pipe 1 The steel pipe 1 which is locked inward and is abutted in this state, in the embodiment, is positioned with respect to the steel pipe 1 on the side where the upper steel pipe 1 is sandwiched between the deformed bolt 3 and the handle 4 and the backing plate 2 is joined.

As shown here, the handle 4 has a length that extends over both steel pipes 1 and 1 when the deformed bolt 3 is locked, and has a shape that abuts the side surfaces of the steel pipes 1 and 1 and gives a reaction force to them.

Further positioned steel pipe 1 is a handle 4 as shown.
It is temporarily fixed by tightening the nut 5 from the outside.

The handle 4 is removed every time one side surface of the steel pipe 1, 1 is welded, and the long hole 2a is left as it is or is welded up from the surroundings to be closed.

When the sum of the thicknesses of the steel pipe 1 and the backing plate 2 on the side to be butted is constant, a stopper is provided inside the handle 4, which corresponds to the distance from the head 3a of the deformed bolt 3 as shown in the figure. By attaching the screw 4a of 4 and fixing the handle 4 to the deformed bolt 3, it is possible to tighten and release the steel pipe 1 to the backing plate 2 simply by rotating the handle 4.

Next, the invention described in the second claim will be described.

As shown in FIG. 2, the provisional joining hardware A of the present invention has a backing metal 2'having a nut 6 bonded in advance on the inner peripheral surface thereof, and a bolt 7 screwed onto the nut 6 of the backing metal 2 '. It is composed of a tightening metal fitting 8 shown in FIG. 7-I which is screwed into a bolt 7 and straddles both steel pipes 1 and abuts on the outer peripheral surface thereof. 2 '
And is temporarily fixed to the steel pipe 1 on the backing metal 2'side.

Both steel pipes 1 and 1 are abutted at a distance such that the bolt 7 can be inserted as in the above invention.

The bolt 7 is screwed into the nut 6 from the outside of the steel pipe 1,
The tightening metal fitting 8 screwed into this is turned by a wrench or the like to draw the backing metal 2'to the steel pipe 1 side so that they are brought into close contact with each other, and the nut 5 is tightened to the outside of the tightening metal fitting 8 to temporarily fix the steel pipe 1. Fixation is done.

The bolt hole 2'a into which the bolt 7 is inserted is opened in an ordinary circular shape.

Also in this case, the tightening member 8 and the bolt 7 are removed every time the steel pipes 1 and 1 are welded, and the bolt hole 2'a of the backing metal 2'after removal is closed by the plug bolt 9 shown in Fig. 7-II. .

FIG. 3 shows an embodiment in which the number of bolts 7 on each side of the steel pipe 1 is increased.

In the inventions described in claims 1 and 2, backing metal 2,
The corner of 2'of the steel pipe 1 to be joined later is set to the fourth
Backing metal 2'by cutting out as shown
Even when there is a difference in curvature between the outer circumference and the inner circumference of the steel pipe 1, the steel pipes 1 and 1 can be reliably brought into close contact with each other without a gap.

The present invention can also be applied to the case where the steel pipes 1 and 1 are filled with concrete.

(Effect of the Invention) This invention is as described above, and temporarily secures the steel pipe on the other side to the backing metal that is pre-joined to the inner circumference of one steel pipe with bolts and nuts, and then removes it after welding both steel pipes. It is economical because it does not require cutting and the like and can be diverted many times without waste.

[Brief description of drawings]

FIG. 1 is an elevational view showing an embodiment of the invention as claimed in claim 1.
FIG. 2 is an elevational view showing an embodiment of the invention as claimed in claim 2.
FIG. 3 is an elevation view showing another embodiment, FIG. 4, FIG.
FIG. 6 is a perspective view showing the backing plate, the deformed bolt, and the handle, and FIGS. 7-I and II are the tightening fittings, respectively.
FIG. 8 is a perspective view showing a stopper bolt, FIGS. 8-I and II are plan views and elevation views showing a conventional temporary fixing method, and FIG. 9 is an elevation view showing another method. 1 ... Steel pipe, 2, 2 '... Backing metal, 2a ... Long hole,
2'a ... bolt hole, 3 ... deformed bolt, 3a ... head, 4 ... handle, 4a ... screw, 5 ... nut, 6
...... Nuts, 7 ... Bolts, 8 ... Tightening fittings, 9 ...
… Plug bolts.

Front page continuation (72) Inventor Akio Tomita 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Kansuke Honma 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. A backing metal which is inscribed in advance and joined to one of the steel pipes which are connected to each other to form a column and which has a laterally long slot formed in its peripheral surface, and which can be inserted into the long slot of this backing strip. It consists of a deformed bolt having a head that is long in one direction and a handle that is screwed or engaged with the shaft of the deformed bolt from the outside of the steel pipe. A temporary joint metal fitting for a steel pipe column, characterized in that the other steel pipe is temporarily fixed to one steel pipe. 2. A backing metal, which is inscribed in advance and joined to one of steel pipes which are connected to each other to form a column, and a nut is joined to an inner peripheral surface thereof, and a bolt which is screwed into the nut of the backing metal. , And a tightening metal fitting that is screwed to the bolt and abuts the outer peripheral surface of both steel pipes.The tightening metal is rotated to tighten the bolt, and the steel pipe is closely attached to the backing plate and the other steel pipe is A temporary joint metal fitting for a steel pipe column, which is temporarily fixed to a steel pipe.