JP4030376B2 - Climbing beam connecting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ascending beam connecting device for connecting an end of an ascending beam to a structural material such as a column or a beam.
[0002]
[Prior art]
Conventionally, when connecting the end of the climbing beam to a pillar, etc., the tenon and the mortise are machined into the end of the climbing beam and the side of the column, and the tenon and the mortise are fitted together. It was connected with metal fittings such as a bite. However, machining mortises in columns has caused a considerable drop in column strength, and recently there is a lack of skilled carpenters who can process mortises and mortises dexterously. There is a need for a simple structure that does not.
[0003]
As a conventional beam connecting apparatus that does not use a mortise and a mortise, there is one that has been previously filed and patented by the present applicant (Patent 2509783). This is an invention of a connecting device for connecting a beam to another beam, a girder, etc. at right angles, but it can also be used for a connecting part of a climbing beam. FIG. 9 shows a state in which the upper end portions of the left and right climbing beams 91 are respectively connected to the opposing side surfaces of the upper end portion of the column 90 using this apparatus. This connecting device is composed of a joint plate 92 that is bent between the pillar 90 and the beam 91 and whose upper and lower ends are bent, and a screw bolt 93 that passes through the joint plate 92 from the beam 91 and is obliquely screwed into the pillar 90. The joint plate 92 is screwed to the end face of the beam 91, the upper refracting piece 94 of the joint plate is hooked to the end face of the column 90 and screwed, and the lower refracting piece 95 of the joint plate 96 is provided in the end face of the beam. Is fitted.
[0004]
[Problems to be solved by the invention]
Since the climbing beam that supports the roof is always subjected to a large downward force, the upper edge of the climbing beam end face tends to move away from the column at the connection point between the climbing beam and the column. There was a case where I wanted to strengthen it further. In addition, in the conventional coupling device, the end face of the climbing beam is pressed against the column by tightening the screw bolt, and a strong coupled state is obtained. However, it is workable to screw a long screw bolt diagonally. It was not good, and it was unexpectedly troublesome to machine the threaded holes for screw bolts in the climbing beam.
[0005]
In view of the above-described circumstances, the present invention is an improvement of a conventional connecting device that is more suitable for connecting climbing beams. In the invention according to claim 1, An object of the present invention is to further improve the strength of the upper connection, and in the invention of claim 2 , it is an object of the present invention to provide a more simple and easy-to-install connection device without reducing the connection strength. .
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a climbing beam connecting device according to the first aspect of the present invention is configured such that the upper ends of the left and right climbing beams are connected to the opposing side surfaces of a structural material such as a column or a beam via a joint plate. The coupling plate has an upper protruding piece and a lower protruding piece extending in opposite directions, and has a hook-shaped engaging portion on the tip side of the upper protruding piece. Insert the lower protruding piece into the additional groove formed on the end face of the beam, climb the joint plate and screw it to the end face of the beam, hang the upper protruding piece on the upper surface of the structural material, and engage the upper protruding piece installed facing each other The parts are engaged with each other, a wedge member is driven between the engaging parts, and the upper protruding piece is screwed to the structural member.
[0007]
Further, the climbing beam coupling device according to the invention of claim 2 is a coupling device for coupling the lower end of the climbing beam to one side surface of a structural material such as a column or a beam via a joint plate, The joint plate has an upper projecting piece and a lower projecting piece that extend in opposite directions at right angles, and the lower projecting piece is inserted into an additional groove formed on the end surface of the climbing beam, and the joint plate is screwed to the end surface of the climbing beam, The upper protruding piece is hung on the upper surface of the structural material and screwed, and the rod provided on the lower surface side of the upper protruding piece is embedded in the structural material, and the screw is screwed from the opposite side where the climbing beam of the structural material is connected. A bolt is inserted, and the screw bolt penetrates the rod and the joint plate and is screwed into the climbing beam to be tightened.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 6 shows an example of a frame structure of a roof portion of a wooden building, where the upper end of the climbing beam 3 is connected to a column 1a (sometimes called a bundle) and a beam 2a. Then, the climbing beam connecting device of the present invention is used at locations B1 and B2 where the lower end of the climbing beam 3 is coupled to the column 1b and the beam 2b.
[0009]
First, the configuration of the connecting device in the A1 part will be described with reference to FIGS. Here, the upper end portions of the left and right climbing beams 3 are connected to the opposite side surfaces of the upper end portion of the column 1a via joint plates 4a. The joint plate 4a is formed by bending the upper and lower ends of one steel plate in opposite directions and forming an upper protruding piece 5a and a lower protruding piece 6a. The upper protruding piece 5a and the lower protruding piece 6a have the same width as that of the climbing beam 3, and the vertical portion of the joint plate 4a has a smaller width. The upper protruding piece 5a is provided with a hook-shaped engaging portion 7 on the tip side. The through holes 14a of the mounting screws 13a are provided at the four corners of the vertical portion of the joint plate 4a, and the through holes 16a of the connecting screws 15a are provided at the upper protruding piece 5a.
[0010]
The end face of the climbing beam 3 is processed with a recess 8a having a thickness of the joint plate in which the vertical portion of the joint plate 4a can be accommodated and a follow-up groove 9a into which the lower protruding piece 6a is inserted. It is embedded in the same plane as the end face of the climbing beam 3, and is fixed to the end face of the climbing beam by the mounting screw 13a. Then, when the upper projecting piece 5a is hung on the upper end surface of the pillar 1a, the engaging portions 7, 7 of the upper projecting pieces extending from the climbing beams 3, 3 on both sides are engaged with each other as shown in FIG. Become. Here, when the wedge member 10 is driven between the engaging portions from above, the end surfaces of the climbing beams 3 and 3 are attracted to the column 1a side and are in close contact with the column. In this state, the upper projecting piece 5a is fixed to the column 1a by the connecting screw 15a, so that the end surface of the climbing beam 3 can be strongly and closely connected to the side surface of the column 1a. According to this coupling device, the force that attracts the climbing beam 3 to the pillar 1a by driving the wedge member 10 always works, and the end surface of the climbing beam 3 can be used as long as the wedge member 10 does not come out after a long period of time. There is no gap between the pillars 1a. Furthermore, as shown by the phantom line in FIG. 3, when the screw bolt 17 is inserted obliquely from the upper surface of the climbing beam 3 and the screw bolt is screwed into the column 1a and tightened, the connection can be made stronger. In this case, it is necessary to make a through hole for the screw bolt 17 in the climbing beam 3 and the joint plate 4a.
[0011]
In the embodiment, a tapered pin having a circular cross section is used as the wedge member 10, but the wedge member may be a member having a rectangular cross section. Further, it is more preferable that the wedge member 10 is provided with a means for preventing the wedge member from being provided with a horizontal stripe jagged surface.
[0012]
Up to this point, the connecting device in the A1 part of FIG. 6 has been described. However, the connecting device in the A2 part of FIG. 6 is similar to the above in that the connecting device is connected to the beam 2a. It is.
[0013]
Next, the configuration of the connecting device in the B1 part of FIG. 6 will be described with reference to FIGS. Here, the lower end of the climbing beam 3 is connected to one side of the upper end of the column 1b via a joint plate 4b. The joint plate 4b is formed by bending a lower end portion of one steel plate at a right angle to form a lower protruding piece 6b and horizontally welding another steel plate on the opposite side to form an upper protruding piece 5b. In the vertical portion of the joint plate 4b, a through hole 14b of the mounting screw 13b and a through hole 24 of the screw bolt 11 are provided. The upper protruding piece 5b is provided with a through hole 16b of the connecting screw 15b and a through hole 19 of a bolt 18 for attaching the rod 12.
[0014]
The end face of the climbing beam 3 is processed with a recess 8b having a thickness of the joint plate in which the vertical portion of the joint plate 4b fits, and a follow-up groove 9b into which the lower protruding piece 6b is inserted. It is embedded in the same plane as the end face of the climbing beam 3, and is fixed to the end face of the climbing beam by the mounting screw 13b. A cylindrical rod 12 is attached by a bolt 18 to the lower surface side of the upper protruding piece 5b. The rod 12 is provided with a through hole 25 of the screw bolt 11.
[0015]
In the column 1b, a mortise 20 into which the rod 12 is fitted is processed from above, and a through hole 21 and a counterbore for the screw bolt 11 are processed from the opposite side where the climbing beam 3 is connected. Then, the rod 12 is inserted into the mortise 20, and the upper protruding piece 5b is hung on the upper end surface of the column 1b and fixed by the connecting screw 15b. Further, the screw bolt 11 is inserted into the through hole 21 of the column 1b, and the screw bolt 11 is screwed into the climbing beam 3 and tightened, so that the end surface of the climbing beam 3 and the side surface of the column 1b are strongly pressed without a gap, and a strong connection state is obtained. Is obtained. Further, since the rod 12 is embedded in the column 1b and the screw bolt 11 is passed through the rod 12, the joint plate 4b and the column 1b are strongly coupled to each other, so that a very strong connection strength is generated. As the screw bolt 11, a coach screw bolt is used.
[0016]
In this connecting device, the rod 12 may be omitted, and FIG. 7 shows an embodiment in that case. When the screw bolt 11 is tightened, the end face of the climbing beam 3 is pressed against the column 1b to connect both members, and the upper part of the joint plate 4b is attached to the climbing beam 3 by using a screw bolt 27 stronger than the mounting screw 13b. It is fixed.
The connecting device of B2 part of FIG. 6 is the same as the connecting device shown above, except that the partner to connect the climbing beam 3 is the beam 2b.
[0017]
With respect to the procedure for attaching the climbing beam 3 using the connecting device described above, first, joint plates 4a and 4b are attached in advance to the end surfaces on both sides of the climbing beam 3 at the factory or on site. Then, the climbing beam 3 is lifted by a crane, the upper protruding pieces 5a, 5b at both ends are hooked on the upper surfaces of the pillars 1a, 1b and the beams 2a, 2b, and the wedge member 10 is placed between the engaging portions 7 of the upper protruding pieces 5a. Then, the upper protruding piece 5a is screwed. The lower end side of the climbing beam 3 is tightened by screwing the screw bolt 11 into the climbing beam 3 from the through hole 21. The upper projecting piece 5b may be screwed either before or after that.
[0018]
The climbing beam 3 may be provided with its lower end protruding from the column 1b or the beam 2b, and FIG. 8 shows the connecting device in that case as a reference. Here, as a connecting device, two cylindrical rods 22a and 22b are connected by a connecting pin 23 so as to be bent. A mortise is formed in the contact portion between the climbing beam 3 and the column 1b to fit the rods 22a and 22b, and fixing pins 26a and 26b inserted into the climbing beam and the column are passed through the rods.
[0019]
The climbing beam connecting device of the present invention is not limited to the embodiment shown here. Although it is necessary to provide at least the additional grooves 9a and 9b on the end face of the climbing beam, the recesses 8a and 8b can be omitted. In that case, the lateral width of the joint plates 4a and 4b can be made the same as the lateral width of the climbing beam. However, as shown in FIGS. 1 and 4, if the recesses 8a and 8b are provided and the joint plates 4a and 4b are embedded therein, the end surface of the climbing beam and the side surface of the structural material are in direct contact and the joint plate is exposed to the outside. Therefore, the fire resistance is improved, and a clean connection state is obtained, which is more preferable.
[0020]
【The invention's effect】
In the climbing beam connecting device according to the first aspect of the present invention, an engaging portion that engages with each other is provided at the distal end portions of the upper projecting pieces extending from the ends of the left and right climbing beams, and a wedge member is provided between the engaging portions. The driving force creates a force that attracts the left and right climbing beams toward the structural material, so that the contact state between the end surface of the climbing beam and the side surface of the structural material is always maintained across the joint plate, and the connecting strength of the climbing beam is increased. Can be effectively increased.
[0021]
The connecting device for the climbing beam according to the second aspect of the present invention is such that the end surface of the climbing beam and the side surface of the structural material are pressed against each other with the joint plate sandwiched between the structural material side by screwing the screw bolt into the climbing beam and tightening. Can be obtained. In this coupling device, the threaded bolt through hole can be processed perpendicularly to the side of the structural material rather than being processed obliquely into the climbing beam, so the time required for pre-processing can be reduced, It becomes easy to screw in the screw bolts. In addition, a rod provided on the lower surface of the upper protruding piece is embedded in the structural material, and a screw bolt is passed through the rod, and the joint plate is more firmly fixed to the structural material. It is done.
[0022]
In addition, as an effect common to all the coupling devices of the present invention, there is an effect that difficult processing such as a mortise and a mortise is not required, and accordingly, the strength of the structural material and the climbing beam can be prevented from being lowered.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a configuration of a connecting device that connects an upper end portion (A1 portion in FIG. 6) of a climbing beam.
FIG. 2 is an enlarged plan view of a connecting portion (A1 in FIG. 6) at the upper end of the climbing beam.
FIG. 3 is a cross-sectional view taken along the line AA in FIG.
FIG. 4 is an exploded perspective view showing a configuration of a connecting device that connects lower ends (B1 in FIG. 6) of the climbing beam.
FIG. 5 is a longitudinal sectional view of a connecting portion (B1 in FIG. 6) at the lower end of the climbing beam.
FIG. 6 is a perspective view showing an example of a frame structure of a roof portion of a wooden building.
FIG. 7 is a longitudinal sectional view showing another embodiment of a connecting device for connecting the lower end portion of the climbing beam to the column.
FIG. 8 is a longitudinal sectional view showing an example of a connecting device in a case where the lower end portion of the climbing beam is protruded from the column and connected.
FIG. 9 is a longitudinal sectional view showing a conventional beam connecting device.
[Explanation of symbols]
1a, 1b Column 2a, 2b Beam 3 Climbing beam 4a, 4b Joint plate 5a, 5b Upper protruding piece 6a, 6b Lower protruding piece 7 Engaging portion 8a, 8b Recessed portion 9a, 9b Additional groove 10 Wedge member 11 Screw bolt 12 Rod

Claims (2)

  A connecting device for connecting upper ends of left and right climbing beams (3) to opposite side surfaces of a structural material such as a pillar (1a) and a beam (2a) via a joint plate (4a), Has an upper protruding piece (5a) and a lower protruding piece (6a) extending in opposite directions at right angles, and has a hook-shaped engaging portion (7) on the tip side of the upper protruding piece. The lower protruding piece (6a) is inserted into the additional groove (9a) formed on the end face, the joint plate (4a) is screwed to the end face of the climbing beam (3), and the upper protruding piece (5a) is attached to the structural material (1a, 2a) is engaged with the engaging portions (7) of the upper projecting pieces placed opposite to each other, and the wedge member (10) is driven between the engaging portions, so that the upper projecting pieces (5a) A climbing beam connecting device characterized by screwing a frame to a structural material. A connecting device for connecting the lower end of the climbing beam (3) to one side surface of a structural material such as a column (1b) or a beam (2b) via a joint plate (4b). It has an upper protruding piece (5b) and a lower protruding piece (6b) extending in the opposite perpendicular directions, and the lower protruding piece (6b) is inserted into a follow-up groove (9b) formed on the end face of the climbing beam. ) Is screwed to the end face of the climbing beam (3), the upper projecting piece (5b) is hung on the upper surface of the structural member (1b, 2b) and screwed, and the upper projecting piece (5b) is suspended on the lower surface side. embedded in Te provided a rod (12) the structural material (1b, 2b), and further inserting the opposite side of the threaded bolt from the side of the climbing beams linked structural member (11), said threaded bolt (11) is a rod (12) and registered the joint plate (4b) through, characterized in that the tightening screwed to climb beam (3) Beam coupling device.

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