JPS6365438B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a positioning tool for a backing metal to be attached to a cut end of a joint block or column base made of column steel used as a column of a steel frame structure, and particularly relates to The present invention relates to a novel positioning tool which can simultaneously position the backings at both ends of a relatively short column base or joint block, and accurately define the length between the tips of both backings.

Conventional technology As shown in Fig. 1, columns of steel structures are made by sequentially welding column bases 1 with a length corresponding to the ceiling height of each floor and joint blocks 2 for attaching beams to the columns. It consists of Recently, column steel (square steel), which has excellent earthquake resistance, has been widely used as column material for steel structures. However, in order for column steel to exhibit the specified strength, it is necessary to apply standard processing techniques to the welded parts of each member, and to put it simply, it is inferior to conventional H-beam steel. This will expose his weak side. Therefore, the cut ends of column bases and joint members are beveled in advance, and then
Furthermore, a backing metal is attached and then welding is performed.

Here, before explaining the present invention, an outline of the procedure for forming pillars will be explained based on FIG. 2.

First, the column steel is cut to a predetermined length to form the column base 1.
After the cut end is grooved, the backing metal 3 is attached to it (see Fig. 2, c). Separately, the column steel is cut into predetermined dimensions and the joint member 4 is
After the cut end is grooved in the same manner as above, the backing metal 3 is attached to this, and the diaphragm 5 is further welded to both ends (see Fig. 2-G). Subsequently, a mounting member 6 is welded to this to form a joint block 2,
The column base 1 is then joined to this joint block 2.

Since the backing metal 3 is used to complete the connection between the column base 1 or the joining member 4 and the diaphragm 5 and to exhibit sufficient welding strength, it is made to protrude from the cut end of the column base 1 etc. by a predetermined amount. Of course, the true length l of the column base 1, etc. is the length that includes the back cover 3 attached to it, and the back cover 3 is the true joint end to the diaphragm 5. Therefore, even if there is a dimensional error or distortion of the cut end surface of the column base 1, etc., it is important that the backing metal 3 absorbs it.

Therefore, the present inventor arbitrarily adjusted the amount of protrusion of the backing metal 3 with respect to the cut end of the column base 1, etc., and made the end edge 7 of the backing plate 3 perpendicular to the panel surface 8 of the column base 1, etc. We have developed a positioning tool and have already applied for a patent (Patent Application No. 77106-1983).

Problems to be Solved by the Invention By the way, this device is for positioning the backing metal on one side of the supporting leg and the joint block, but in reality, there is an inconvenience unless the positions of both sides are determined at the same time. many. In other words, with this device, one side must be positioned first, and the position of the opposite side must be determined based on this position, which makes it difficult to achieve dimensional accuracy in the length between the tips of both back pads, and the work is time consuming.
There are disadvantages such as being time consuming and troublesome, the amount of protrusion of the backing metal being uneven on the left and right sides, and the possibility of joint failure during welding.

Means for Solving the Problem The present invention has been made in order to solve the above-mentioned drawbacks of the conventional art. With a pair of positioning blocks,
The backing metals at both ends of the joining member can be positioned at once to accurately define the length, and the amount of protrusion of the backing metals at both ends can be made uniform.

The present invention will be explained below based on the drawings.

3 and 4 are diagrams showing the basic principle of the present invention. In FIG. 3, reference numeral 9 is a base, and on its upper surface a pair of positioning blocks 10 and 11 are placed at the center of the base (O in the figure). However, they are placed equidistantly apart from each other. Both positioning blocks 10 and 11 are connected to a linear movement mechanism 12 that moves them by the same amount in opposite directions, so that they can move toward and away from each other while maintaining the same distance from each other with respect to the center O of the machine. Then, attach the inner surfaces of both positioning blocks 10 and 11 to the backing plate 3.
Ruler surfaces 13a, 13 for positioning a, 3b
b. In addition, a joining member 4 is provided at the center of the base 9.
Clip blocks 14a and 14b are provided.

This fixes the joining member 4 to the center of the base 9 and includes a tightening mechanism 15.

Next, the operation will be explained with reference to FIGS. 3 to 6.

First, the joining member 4 is placed on the base 9. Then, the linear movement mechanism 12 is operated, and the pair of positioning blocks 10 and 11 are brought close to the center of the base by the same amount, and the ruler surfaces 13a and 13b are brought into contact with both ends of the joining member 4. As a result, the center of the joining member 4 coincides with the center O of the base 9 (FIG. 3). Next, clip blocks 14a and 14b provided at the center of the base are brought into contact with the joining member 4 and fixed (FIG. 4).

Next, the linear movement mechanism 12 is activated to move the positioning blocks 10 and 11 backward. At this time, the ruler surfaces 13a, 13 of both positioning blocks 10, 11
The distance l between b is measured, and the amount of retreat d is adjusted so that this value becomes a predetermined amount. In this state, the backing metals 3a, 3b are brought into contact with the ruler surfaces 13a, 13b,
The joining member 4 and the backing metals 3a and 3b are temporarily welded (FIG. 5).

Next, the linear movement mechanism 12 is activated, and the positioning blocks 10 and 11 are moved back, and the back cover 3 is moved back.
Insert the diaphragms 5a, 5b between the ruler surfaces 13a, 13b and the backing plates 3a, 3b.
The diaphragms 5a, 5b and the joining member 4 are joined with each other in a state in which they are in contact with each other (FIG. 6).

Embodiment FIGS. 7 to 10 are diagrams showing an embodiment of the present invention. In FIGS. 7 and 8, reference numerals 10 and 11 are positioning blocks, which are slidably mounted on a pair of guide rails 16a and 16b built on the base 9 and connected to the linear movement mechanism 12.

In this device, a single feed screw 17 with a left-hand thread 17a and a right-hand thread 17b connected is rotatably mounted on a base 9, and this is configured to be rotated by a rotation handle 18, and the positioning blocks 10, 11
Nuts 10a and 11a integral with the base are screwed into left-hand threads 17a and right-hand threads 17b, respectively, and are provided at positions equidistant from each other from the center O of the base,
Both positioning blocks 10 and 11 are rotary handles 1
When 8 is rotated, they move by the same amount in opposite directions, and move toward or away from each other depending on the direction of rotation. Although the linear motion mechanism 12 is of a feed screw type as an example, it is not limited to this embodiment. For example, the same effect can be achieved by applying a known linear movement mechanism, such as a mechanism in which a pair of racks are vertically engaged with a pinion and moved equidistantly in opposite directions. Furthermore, there is no problem in using a motor, cylinder, etc. as the driving means.

It should be noted that the ruler surfaces 13a and 13b where the end surfaces of the joining member 4 and the backing plates 3a and 3b come into contact have various diameters of the joining member 4, and that various impurities adhere to the surface due to welding, resulting in unevenness. Since this occurs,
Preferably, a separate chip 19 is removably mounted on the positioning block with bolts and constitutes the inner surface thereof. Further, a display mechanism for displaying the length between both ruler surfaces 13a and 13b of the positioning block is provided at a suitable place between the positioning blocks 10, 11 and the base 9. As an example, a pointer 20 is provided on the positioning block 10. , On the other hand, there is a scale 21 on the base 9 along the sliding direction of the positioning blocks 10 and 11 to display the length between the ruler surfaces 13a and 13b.
It is engraved with. Further, reference numeral 22 in FIG. 9 indicates a ruler surface 13 in the positioning blocks 10 and 11.
A stopper provided on the inside of a, 13b,
This is for regulating the position of the side surfaces of the diaphragms 5a and 5b, and for example, the degree of protrusion can be adjusted using elongated holes and bolts. Further, although not shown, spacers are attached to the inner lower surfaces of the ruler surfaces 13a, 13b as necessary to adjust the positions of the diaphragms 5a, 5b in the vertical direction.
Further, reference numerals 14a and 14b are clip blocks, which are provided with a tightening mechanism 15. This one is number 10
As shown in the figure, similar to the linear movement mechanism 12, a feed screw 2 has a left-hand screw 23a and a right-hand screw 23b connected to each other.
Nuts 24a and 24b integral with the clip blocks 14a and 14b are screwed into the screws 3 and 3, respectively, and the rotary handle 25 attached to the feed screw 15 is rotated to move the screws toward and away from each other.
Regardless of the diameter of the joining member 4, it can always be set at the center of the base 9. Note that the tightening mechanism 15 only needs to be able to fix the joining member 4 at a desired position on the base 9, so it is not limited to this embodiment, and any known fixing means such as a clip mechanism using a spring may be used as appropriate. It is something.

Effects of the Invention As described above, in the present invention, the backing metal is positioned by a pair of positioning blocks that are positioned equidistant from each other with respect to the center of the base and move forward and backward by the same amount. The backing metals on both ends can be positioned at the same time, making the work easier, and even if the joining member is short or cut diagonally, the length between the tips of both backing metals can be accurately defined. It is something. Furthermore, since the amount of protrusion of the backing metal from both ends of the joining member can be made uniform on both sides, there is an advantage that the joining member and the diaphragm can be properly joined.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing a column of a steel structure, Fig. 2 is an explanatory view showing the assembled state of the same, Figs. FIG. 8 is a partially cutaway front view of the same, FIG. 9 is a side view of the same, and FIG. 10 is a side view of one embodiment of the clip block tightening mechanism. 9; Base, O; Center of base, 10, 11; Positioning block, 12; Rectilinear movement mechanism, 13a, 13
b... Ruler surface, 14a, 14b; Clip block, 15; Tightening mechanism, 4; Joint member, 3a, 3
b; backing metal, 5a, 5b; diaphragm.

Claims (1)

[Claims] 1 A linear motion mechanism in which a pair of positioning blocks are positioned equidistantly apart from each other in the center of a base, their inner surfaces serve as ruler surfaces of the backing metal, and both positioning blocks are moved by the same amount in opposite directions. What is claimed is: 1. A positioning tool for a backing metal in a joint block for construction, etc., which is connected to the backing metal block so as to be able to approach and separate from the metal base, and is provided with a clip block for the joint member at the center of the base.