JPS6281295A - Positioning device for backing metal for junction of square cylinder steel - Google Patents

Abstract

PURPOSE:To improve positioning accuracy by providing a base for abutting on two corners of a square cylinder steel, and also providing a moving block which can move forward and backward. CONSTITUTION:A fixed supporting part 1a and a movable supporting part 1b are provided on a planar base 1, and made to abut on adjacent corners A', A' of a square cylinder steel A. In this case, the movable supporting part 1b inserts and holds the square cylinder steel A by moving a moving body 2b by a rotation of a handle screw rod 2c. Also, a moving block 3 is formed roughly in a plane shape, provided on the base 1 through a supporting piece 3a, and also to its tip, a positioning block is attached. When the moving block 3 is moved through a handle screw rod 1e, the positioning block prescribed a projecting width of a backing metal. The base 1 can be set without being influenced by a side face of the square cylinder steel A, therefore, the positioning accuracy of the backing metal can be raised.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a positioning device for a backing metal for joining rectangular cylindrical steel used as a column material, etc. of a steel frame structure. More specifically, the present invention relates to an improvement in a device that accurately defines the width of a joint backing plate fixed to the cut end of square tubular steel to improve the joint strength thereof.

(Prior art) In recent years, rectangular tubular steel has been widely used as column materials for steel structures. It requires processing work to fix it and join it by welding. This is because although square WJ steel has excellent seismic strength, the joint area is small, so it is necessary to use auxiliary materials such as backing metals for joints. This is because the strength of the entire structure is lower than that of H-shaped steel.

By using such a joining backing metal, the width of the joining backing metal that protrudes from the square tube steel is also included in the product.
There has been a demand for the development of a means to accurately define the protrusion width, and the present applicant has already filed several proposals.

Figure 3 shows the patent application filed in 1986-1995 among the earlier applications of the present applicant.
This shows No. 052.

In this application, an L-shaped base a placed on square tubular steel,
Sliding block b sliding on base a and sliding block b
We have proposed a device with a structure consisting of a positioning block C attached to the end of the holder. And this device is a base a
is placed on one side of a square tube steel and supported by the L-shaped end on the other side adjacent to it, and the positioning block C facing the cut end of the square tube steel is moved back and forth by a sliding block b. By moving it, the protruding width of the bonding odor cover is determined.

(Problems to be Solved by the Invention) According to the applicant's earlier application shown in FIG. 3, there is a problem that accurate positioning is impossible depending on the finished state of the square tube steel product.

That is, as shown in FIGS. 4 and 5, the corner A' of the square tube steel A
is finished accurately, but the side surface A'' is often distorted. This distortion of the side surface A' may exist at the time of product completion, or it may occur later due to cutting of the square tube w4A, etc. However, in any case, it becomes an obstacle to accurately setting the base a to the rectangular tube steel A, and incorrect setting of the base a disturbs the posture of the positioning block C, causing the protruding width of the joining odor fitting to become obstructed. making it impossible to specify the exact

The present invention was made in order to solve the problems of the conventional technology, and its purpose is to accurately determine the protruding width of the joining odor fitting without being affected by the distortion that exists on the side surface of the corner WJtR. The purpose is to make it possible to specify.

(Means for Solving the Problems) The positioning device for the odor fitting for joining rectangular cylindrical steel according to the present invention has a support portion that comes into contact with the adjacent second floor of the rectangular cylindrical steel, and is attached to one side of the rectangular cylindrical steel. A base to be placed, a moving block attached to the base so as to be movable back and forth in the direction of the cut end of the square tube steel, and a moving block attached to the end of the moving block so as to face the cut end of the square tube steel. 6 (Function) The positioning device for the odor guard for joining rectangular cylindrical steel according to the present invention employs a means consisting of a positioning block that brings the base into contact with the adjacent second floor of the rectangular cylindrical steel. By placing and supporting the base on one side of the square tube steel, it is possible to prevent inaccurate setting of the base due to distortion existing on the side surface of the square tube steel.

(Example) Hereinafter, an example of a positioning device for a smell guard for joining rectangular cylindrical steel according to the present invention will be described based on FIGS. 1 and 2.

1 and 2 show a cross section of the present invention in a state of use, and the rectangular tube steel A to be set is not limited to the column material of a steel structure.

Includes a wide range of applications.

The base 1 is formed into a substantially flat plate shape, and includes a fixed support portion 1a and a movable support portion ib on its lower surface. These support parts 1a and 1b are each comprised of a pair of projection-like structures that abut against a corner A' of the square tube steel A and are located in orthogonal directions with the sides of the corner A' interposed therebetween. Movable support part 1
b is moved by a support part position adjustment mechanism 2 consisting of a shirt fixed to the lower surface of the base 1 and a handle-equipped screw 2c that moves the movable body 2b inserted through the shaft 2a along the shaft 2a. The mobile body 2
It is fixed at b. Therefore, both the supporting parts 1a and 1b come into contact with the adjacent second floor A' of the square tubular steel A, and the fixed supporting part 1a is brought into contact with one corner A' of the square tubular steel A.
As shown in FIG. 1, if the supporting part 1b, which is movable by the rotation of the handle screw 2c, is brought close to the other corner A' adjacent to the -corner A', the square tube steel A of any size can be formed. It has the advantage that it can also be used for both supporting parts 1a.

There is an advantage that the base 1 can be stabilized by sandwiching the rectangular tube steel A with 1b. The base 1 has both support parts 1a.

] If supported by b, the base 1 will not come into contact with the curved surface existing on the side surface A' of the square tube mA, so that the base 1 will be accurately set with respect to the square tube tllA. In addition to the illustrated embodiment, it is also possible to adopt a structure in which both the supporting parts 1a and 1b are fixed, and the supporting parts 1a and 1b are fitted into the second floor A'. This embodiment has the disadvantage that it cannot be used for rectangular tube steels A of different sizes, but has the advantage that the structure is simple because the support part position adjustment mechanism 2 is not required. Further, the structure of the supporting parts 1a and 1b can be replaced with a pair of protrusions and may be formed into L-shaped pieces.

The movable block 3 is formed into a substantially flat plate shape, and a shaft 1d fixed to the upper surface of the base 1 is inserted through a support piece 3a protruding from the lower surface of the movable block 3. The moving structure consists of a threaded rod 1e with a handle supported on the base 1 and a threaded engagement piece 3i) on the lower surface of the moving block 3 that is threadedly engaged with the threaded rod 1e with a handle.
The moving direction is the direction of the cut end of the angle UJtliA, that is, the axial direction of the square tube j[A, and the heavy duty member can move freely. Further, a handle 4 is attached to the top surface of the moving block 3.

Easy to handle.

The positioning block 5 is attached to the end of the moving block 3, and has an abbreviated shape so as to face the cut end of the square tube steel A. Therefore, when the movable block 3 is moved, the positioning block 5 approaches or moves away from the cut end of the square tube steel A, and the protruding width of the joining back metal B can be accurately defined.

(Effects of the Invention) As described above, the positioning device for the back metal for joining rectangular cylindrical steel according to the present invention avoids the side surfaces of the rectangular cylindrical steel and supports the base plate without being affected by the side surfaces. This has the effect of allowing accurate setting, accurately maintaining the posture of the positioning block, and accurately defining the protruding width of the joining back metal. In addition, since the supporting portion contacts the rectangular tube steel over a small area, it is possible to easily attach and detach it.

[Brief explanation of drawings]

Figures 1 and 2 are cross-sectional views of the embodiment of the present invention in use, Figure 2 is a cross-sectional view taken along the line X--X of Figure 1, Figure 3 is a perspective view of the conventional example, and Figure 4. , FIG. 5 is a simplified sectional view for pointing out the problems of the conventional example shown in FIG. 1; Base 1a, 1b; Support part 2; Support part position adjustment mechanism A: Square tube steel 3; Moving block 5; Positioning block B; Backing metal for joining

Claims (1)

[Scope of Claims] 1. A base mounted on one side of the square tubular steel having support portions that abut on two adjacent corners of the square tubular steel, and capable of moving back and forth in the direction of the cut end of the square tubular steel. A positioning device for a backing metal for joining square tubular steel, comprising a moving block mounted on a base and a positioning block mounted on the end of the moving block so as to face the cut end of the square tubular steel. 2. The rectangular cylindrical steel according to claim 1, wherein the base is provided with a support part position adjustment mechanism for adjusting the interval between the support parts or for holding the rectangular cylindrical steel between the support parts. Positioning device for backing metal for joining.