JPH05321335A - Jointing device for steel beam and jointing method thereof - Google Patents

Abstract

PURPOSE:To make it possible to set bolt holes of both steel beams coaxial to bolt holes of a joint plate and insert bolts into the holes simultaneously by a simple device and a simple method. CONSTITUTION:A connection device main body comprises a main body 3, which is a joint plate and a handle 4, which extends from the main body 3. Two rows of holes are bored on the main body 3. Each of caps 7 is vertically installed from the main body 3 to a spot coaxial to the penetration holes respectively. Each of bolts are housed in the holes 7. Springs are laid out between the top face of the bolts and ceiling surfaces of the caps. The connection device main body is shaft-supported pivotally to a web of a steel beam 1 on one side by means of pins 11 in such a fashion that its longitudinal direction may be kept horizontal. When a steel beam on the other side is lowered from the upper part, the beam's flange will push the handle 4 so that a connection device 10 may be rotated with the pins as their fulcrum.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining device for joining steel frame beams with bolts and a joining method thereof.

[0002]

2. Description of the Related Art Conventionally, when joining steel beams together,
As shown in FIG. 8, at the site, the end faces of the beams 1 and 2 to be joined are brought into contact with each other, and while maintaining this state, the joint plate 30 is brought into contact with the steel beams so as to straddle them. At this time, the bolt holes provided in the steel beams 1 and 2 are adjusted so that the corresponding bolt holes of the joint plate 30 are coaxially opposed to each other.

To join the steel beams 1 and 2, the joint plate 30 and the steel beams 1 and 2 are temporarily tightened by temporarily fastening some of the bolt holes, and then the joint plate 30 and the steel beams are joined. Insert the bolts into the bolt holes of
A nut is screwed into each bolt from the opposite side and the nut is rotated to a predetermined torque to tighten the bolt, thereby joining the steel beams 1 and 2 to each other.

[0004]

However, in the above-mentioned conventional method of joining steel beams, the joint plate 30 is applied so as to straddle the two steel beams 1 and 2, and the bolt holes of the beams 1 and 2 are connected. Although it is necessary to pass the bolts while holding the bolt holes of the joint plate 30 so as to be coaxially opposed to each other, there is a problem in that it takes time and effort to pass a large number of bolts in an unstable state on site.

The present invention has been made by paying attention to the above problems. The bolt holes of both steel frame beams and the bolt holes of the joint plate are made coaxial by a simple device and method, and at the same time, the bolts are inserted with one touch. The purpose is to be able to.

[0006]

SUMMARY OF THE INVENTION The present invention has been made by paying attention to the above-mentioned problems, and the joining apparatus for steel frame beams according to the present invention is
A joint in which a through hole is formed coaxially with a plurality of bolt holes provided in both steel beams when they are brought into contact with each other across the webs of the two steel beams to be joined. With respect to the main body which is a plate, a rotating pin that pivotally supports the main body on the web portion of the steel beam so as to be pivotable along the web surface of the steel beam, and a cylindrical shape that is erected from the main body surface coaxially with the through hole The cap, the bolt whose head is directed toward the cap side and coaxially with the through hole, and which is housed in each cap, are respectively interposed between the head of the bolt and the ceiling surface inside the cap, and the bolt is inserted through the through hole. With the spring biased in the direction, the through hole of the main body and the bolt hole of the steel frame facing each other, extend downward from the lower side of the main body or upward from the upper side of the main body. Handles provided It is characterized by comprising and.

[0007] Further, when joining the steel frame beams to each other using the joining device, the joining device is arranged in advance such that the handle portion thereof projects laterally from the end face to be joined of one of the steel frame beams, While the other steel beam to be joined is held in a state in which the joint end faces of both steel beams can be opposed to each other, by lowering from above or raising from below, the flange of the other steel beam can It is characterized in that the handle is pushed upward or downward to rotate the joining device so that the bolt holes of both steel frame beams and the through holes of the joining device are coaxially opposed to each other.

[0008]

[Function] When the other steel beam is lowered from above, for example, to the handle portion projecting laterally from the joining end portion of one steel beam, the lower flange of the other steel beam is brought to the handle portion. The handle portion is hit, and the grip portion is pushed downward by the lowering of the other steel beam. Then, the joining device swivels around the pin as a fulcrum, and when the handle portion faces downward, the bolt hole of the one steel frame beam and the through hole of the joining device are coaxially opposed to each other, and at the same time, by the biasing force of the spring, The bolt penetrates the bolt hole of the beam and the through hole of the joining device to connect the joining device and one steel beam in a fixed state.

When the other steel beam is lowered to the same height as the one steel beam, the through hole of the joining device and the bolt hole of the other steel beam are coaxially opposed to each other, and at the same time, they are housed in the cap. The bolt penetrates the bolt hole and the through hole by the biasing force of the spring. This is a one-touch joining system in which the bolt connects the joining device and the other steel frame beam, and thus the two steel frame beams to be joined together via the joining device and the bolt.

Then, nuts are respectively screwed into the shaft portions of the bolts projecting from the opposite surface of the web portion of the steel beam to tighten the bolts, or a conventional joint plate is applied to the opposite surface. From the above, screw the nuts together and tighten the bolts to join the two steel frame beams.

[0011]

Embodiments of the present invention will be described with reference to the drawings.
First, the configuration will be described. As shown in FIG. 1, the joining device body includes a rectangular main body portion 3 which is a joint plate, and a trapezoidal grip portion 4 which extends from one longitudinal end portion of the main body portion 3 in the longitudinal direction. The main body 3 is provided with two rows of through holes 5 along the longitudinal direction (FIG. 2).

The two rows of the through holes 5 are arranged so as to be coaxially opposed to the bolt holes 6 provided in the two steel frame beams 1 and 2 to be joined, as in the conventional joint plate. As shown in FIG. 2, a cylindrical cap 7 is fixed to each through hole 5 of the main body 3 so as to be erected from the main body 3 coaxially with the through hole 5 by welding or the like.
Inside the cap 7, bolts 8 each having a tip end directed toward the through hole 5 are housed. A spring 9 is arranged coaxially with the bolt 8 between the head of the bolt 8 and the inner ceiling surface of the cap 7, and the spring 9 urges the bolt 8 toward the bolt hole 6 by its elastic force.

The diameter of the through hole 5 is designed to be larger than the diameter of the shaft portion of the bolt 8 but smaller than the diameter of the head portion of the bolt 8. The bonding device body as described above,
It is abutted on the web of one steel frame beam 1 made of H-shaped steel with its longitudinal direction horizontal and is pivotally supported by a pin 11 on the web portion of the one steel frame beam 1 so as to be rotatable.

At this time, the main body portion 3 of the joining device 10
The pin 11 is provided on the web portion so that the through hole 5 of the joining device 10 and the bolt hole 6 provided in the steel beam 1 and 2 are coaxially opposed to each other when the longitudinal direction is turned up and down. The handle portion 4 is arranged so as to be pivotable at, and is arranged so as to project laterally from the end surface of the steel beam 1 on the joint side.

At this time, the offset δ ₁ from the joint end face to the pin and the distance δ ₂ from the height of the pin to the upper end of the end face of the grip portion 4 in the longitudinal direction of the joint device 10 are set to be equal. In addition, the upper side of the handle portion 4 protruding laterally is processed so as to draw a gentle curve upward. Further, in order to prevent the swiveling joining device 10 from turning more than a predetermined amount, the stopper 12 that abuts when the joining device 10 turns and the longitudinal direction of the joining device 10 is turned up and down, and prevents the joining device 10 from turning further, is a steel frame. It is provided on the web of the beam 1. However, this stopper 12
Is not always necessary.

As shown in FIG. 1, the joining device 10 as described above is installed in advance on one of the steel beam 1, and on the spot, the guide plate 13 is attached to the joining portion of the steel beams 1 and 2 from the lower side. Set up. The guide plate 13 has a U-shaped cross section, and a lower plate portion 13a that comes into contact with the flange 1a of the steel frame beam 1 made of H-shaped steel from below, and the lower plate portion 1a.
3a is composed of two side plates 13b that extend upward from both side ends and are arranged on the left and right sides so as to sandwich the web portion. The guide plate 13 guides the other steel beam 2 so as to descend straight from above to below.

Then, when the other steel beam 2 made of H-shaped steel is lowered from above along the space between the side plates 13a of the guide plate 13, as shown in FIG. The side flange 2a abuts the handle portion 4 of the joining device 10. Then, following the lowering of the other steel beam 2, the handle portion 4 is pushed downward, and the joining device 10 turns around the pin 11 as a fulcrum.

At this time, the bolts 8 in the cap 7 are prevented from protruding from the inside of the cap 7 with their tips being held down by the web surfaces of the beams 1 and 2 until they come to the positions of the bolt holes 6 of the steel beams 1 and 2. Absent. Here, the turning of the welding device 10 is
Since δ1 and δ2 have the same length, the other steel beam 2
The grip portion 4 is pushed and swung by the flange 2a until the longitudinal direction of the joining device 10 is vertically oriented. Further, the stopper 12 prevents it from further turning.

When the longitudinal direction of the joining device 10 is oriented vertically, the bolt hole 6 of the one steel beam 1 and the through hole 5 of the joining device 10 are coaxially opposed to each other, and at the same time, as shown in FIG. By the biasing force of the spring 9, the through hole 5 of the joining device 10 and the bolt hole 6 of the plate of the steel frame beam are bolted 8
Penetrates in a skewered shape, and one steel frame beam 1 and the joining device 10
And are connected by a bolt 8.

Subsequently, the other steel beam 2 is lowered and the flange 2a of the beam 2 is moved to the lower plate portion 13a of the guide plate 13.
4, that is, when the joints of the two steel beams 1 and 2 reach the same height, the through hole 5 of the joining device 10 and the bolt hole 6 of the other steel beam 2 are coaxial, as shown in FIG. Facing
At the same time, the urging force of the spring 9 causes the bolt 8 to penetrate the through hole 5 of the joining device 10 and the bolt hole 6 of the other steel frame beam 2 in a skewered manner, and thus the other steel beam 2 and the joining device 1
0 and are connected.

As a result, the other steel beam 2 is prevented from descending any more, and the two steel beams 1 and 2 are joined together by the joining device 10.
And bolts 8 are connected. Then, the nut 14 is screwed onto the bolt 8 and the nut 14 is tightened with a predetermined torque.
Tighten and join both steel beams. In addition, 15 is a washer (FIG. 5). In this way, by installing the joining device 10 on one of the steel beam 1 in advance, the other steel beam 2 on the spot is installed.
Both steel beams 1 and 2 are connected by just lowering the
The two steel beams 1 and 2 are joined by simply performing a work of screwing the nut 14 onto each bolt 8. Therefore, the construction work for joining the two steel frame beams on the site, which tends to be unstable, becomes easy.

In the above embodiment, the beams 1 and 2 having the same size are joined to each other, but the invention is not limited to joining the beams having the same size to each other, and the small beam is joined to the large beam. It is also applicable when Further, the through hole 5 of the joining device 10 may be set to have a diameter larger than the diameter of the head of the bolt 8 as shown in FIG.

Also in this case, the same operation as in the above embodiment is performed,
As shown in FIG. 7, two steel beams 1 and 2 to be joined via a joining device 10 and a bolt 8 are connected. However, in this case, after attaching the conventional joint plate 16 from the opposite side, the nut 14 is screwed into the shaft portion of the bolt 8 and tightened with a predetermined torque to join the two steel frame beams 1 and 2.

At this time, since both the steel frame beams 1 and 2 are temporarily connected by the joining device 10, the attachment of the joint plate 16 is easier than in the conventional case. Also, at this time,
It is also possible to make the pin joints removable and reuse them for joining other steel beams after the joining of the steel beams is completed.

[0025]

As described above, according to the joining device and joining method for a steel beam of the present invention, two steel beams are connected to each other by a bolt and a joining device by simply raising or lowering one steel beam on site. Since the positional relationship between both steel frames is fixed by connecting them with each other and then the steel beam is joined only by screwing the nut to the bolt, the effect of facilitating the work for joining the steel beam on site is achieved. is there.

[Brief description of drawings]

FIG. 1 is a view showing attachment of a joining device according to an embodiment of the present invention.

FIG. 2 is a side sectional view showing a state of the bolt in FIG.

FIG. 3 is a view showing a middle of turning of the joining device.

FIG. 4 is a view showing a state in which both steel frame beams are connected by a joining device.

5 is a side sectional view showing a state of the bolt in FIG.

FIG. 6 is a diagram showing a state of bolts in an initial state in the second embodiment.

FIG. 7 is a diagram showing a state of a bolt when it is penetrated in the second embodiment.

FIG. 8 is a view showing a state in which both steel frame beams are connected by a joining device in a conventional example.

[Explanation of symbols]

 1 One Steel Beam 2 Other Steel Beam 3 Main Body (Joint Plate) 4 Handle 5 Through Hole 6 Bolt Hole 7 Cap 8 Bolt 9 Spring 10 Joining Device 11 Rotating Pin 14 Nut

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yuki Aoki 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Within Taisei Corporation (72) Inventor Noriichi Ikema 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo No. Taisei Construction Co., Ltd.

Claims (2)

[Claims] 1. A through hole is formed at a position facing a plurality of bolt holes provided in both steel frame beams when the two web frames of the two steel frame beams to be joined are brought into contact with each other, coaxially with the bolt holes. With respect to the main body that is the joint plate that has been opened, a rotating pin that pivotally supports the main body on the web portion of one of the steel beams and the rotary pin that pivots along the web surface of the steel beam, and project from the main body surface coaxially with the through hole. The cylindrical cap to be installed, the bolt whose head is directed toward the cap side and which is housed in each cap coaxially with the through hole, and which is respectively interposed between the bolt head and the ceiling surface inside the cap, With the spring biasing the bolt in the direction of the through hole and the through hole of the main body and the bolt hole of the steel beam facing each other, turn the main body downward from the bottom side of the main body or above the main side of the main body. Extended towards And a handle part that is provided with the handle. 2. The joining device is preliminarily arranged in a state where a handle portion of the joining device projects laterally from an end face of one steel beam to be joined, and the other steel beam to be joined is joined to both steel beams. While holding the end faces facing each other so that they can face each other, by lowering them from above or raising them from below, the flange of the other steel beam pushes the handle part of the above-mentioned joining device up or down and pivots the joining device. A method for joining steel beams, wherein the bolt holes of both steel beams and the through holes of the joining device are coaxially opposed to each other.