JPS61290138A - Connection structure of pipe body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a tube joining structure for joining an end of a tube to a connected part.

(Prior art) For example, in a prefabricated building, a cylindrical corner post (pipe body) of a building unit is connected to the corner post (pipe body) of a foundation or lower floor building unit.
It is necessary to take some measures when joining the parts (to be connected).

For example, in the joining structure described in Japanese Utility Model Publication No. 53-19605, a guide pin consisting of a tapered head part and a shank part is prepared, and the shank part of this guide pin is connected to the upper end of the column on the lower floor. to screw onto. Further, an end plate is provided at the lower end of the column on the upper floor, and the guide pin is inserted into the insertion hole of the end plate, so that the column on the upper floor is placed on the column on the lower floor.

In the joining structure described in Japanese Utility Model Application Publication No. 57-183303, a nut tightening operation port is provided on the lower side of the column, an end plate is provided at the lower end of the column, and a hole is inserted into the insertion hole of the end plate. The pillars are joined by inserting a bolt protruding from the connected portion, and screwing and tightening a nut onto the bolt by operating from the working port.

In the joint structure disclosed in Japanese Patent Application Laid-Open No. 50-147113, the column of the unit on the upper floor, which has an end plate provided at the lower end opening, is placed on the column of the unit on the lower floor. Then, magnetically attach a bolt to the tip of the T-wrench, insert the T-wrench through the upper end opening of the pillar on the upper floor, insert the bolt through the hole in the end plate, and attach it to the pillar on the lower floor. wear it.

(Problem to be Solved by the Invention) However, in Utility Model Publication No. 53-19605, accurate positioning is possible using a tapered guide pin, but the guide pin is simply inserted into the insertion hole of the end plate. Therefore, the connection strength was very weak.

In Japanese Utility Model Application Publication No. 57-183303, although the joint strength of the columns is strengthened, there is a drawback that the strength of the columns themselves is reduced due to the formation of a machining hole. In addition, in order to work from the operation port, a work hole had to be made in the floor, outer wall, etc.

In JP-A-50-147113, the connection strength is increased and the strength of the column itself does not decrease because no opening is formed in the column, but there is a risk that the bolt held with a T-wrench may fall before the screwing operation. In addition, it was difficult to position the bolts and hinge them, resulting in poor workability. Furthermore, the lack of guide bins made it difficult to accurately position the columns on the upper floor and place them on the columns on the lower floor.

(Means for Solving the Problems) The present invention has been made to solve the above problems, and the gist thereof is to provide the above-mentioned pipe body joining structure for joining the end portion of the pipe body to the connected part. An end plate provided at the end of the tube body and having a non-circular insertion hole; and an engagement plate disposed on the end plate and having a non-circular insertion hole substantially the same shape as the insertion hole of the end plate. It consists of a stop plate, a shank part, and a head part, and the shank part is screwed onto the above-mentioned connected part, and the head part has a narrow taper, and the end surface on the connected part side is inserted into each insertion hole of the above-mentioned end plate and the locking plate. and a guide pin formed in a non-circular shape that is approximately the same shape as the guide pin but slightly smaller than the guide pin, and the guide pin is inserted into each insertion hole of the end plate, the locking plate, and the plate, and the head portion thereof is inserted into the insertion hole of the locking plate and the plate. The pipe joining structure is characterized in that the end plate is tightened to the connected part side via the locking plate in a state shifted from the insertion hole of the locking plate.

(Function) Screw the guide bottle onto the connected part. The guide pin is inserted through the non-circular insertion holes of the end plate of the tube and the locking plate. By rotating the guide pin, the end plate is tightened to the connected portion side via the lock plate while the head portion of the guide pin is shifted with respect to the insertion hole of the lock plate. Thereby, the tube and the connected portion are firmly joined.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

As shown in FIG. 1, a column 1 (pipe body) is, for example, a corner column of a second-story building unit, and is made of steel and has a cylindrical shape with a square cross section. The pillar 1 on the second floor is connected to the pillar 11 (connected part) of the building unit on the - floor by a guide pin 30 via a connecting plate 40.

A flat end plate 3 is attached to the upper open end 2 of the column 1.
is welded. The end plate 3 has a planar shape substantially equal to the cross-sectional shape of the column 1.

A circular insertion hole 4 is formed in the center of the end plate 3 . A back nut 5 is welded to the back surface of the end plate 3 in correspondence with the insertion hole 4.

Moreover, a plurality of guyaflames 10 having insertion holes 10a are provided in the middle part of the pillar 1.

A flat end plate 7 is welded to the lower open end 6 of the column 1, as shown in FIG.

The end plate 7 has a planar shape substantially equal to the cross-sectional shape of the column 1. A non-circular insertion hole 8 is formed in the center of the end plate 7 . This insertion hole 8 has a circular part 8a formed in the center with the same diameter as or slightly larger than the outer diameter of a shank part 32 of a guide bottle 30, which will be described later, and a long continuous part extending from both sides of this circular part 8a. Overhang part 8b
, 8b. Furthermore, four receiving pins 9 protrude from the upper surface of the end plate 7 so as to surround the insertion hole 8 . The receiving bottle 9 has a shank portion 9a that is screwed into the end plate 7, and a head portion 9b having a larger diameter than the shank portion 9a.

A disk-shaped locking plate 20 is arranged on the upper surface of the end plate 7. As shown in Figures 1 and 2,
The locking plate 20 is rotatable because its peripheral surface is in contact with the shank portion 9a of the receiving bottle, and
The center of rotation is prevented from shifting. Also, locking play)
20 is restricted from moving upward by the head portion 9b of the receiving bottle 9. The locking plate 20 is formed with a non-circular insertion hole 21 having substantially the same shape as the insertion hole 8 of the end plate 7. This insertion hole 21 has a circular portion 21a and an overhanging portion 2.
1b. In addition, with the insertion hole 21 and the insertion hole 8 aligned, the locking plate 20 is weakly bonded to the end plate 7 with adhesive to prevent it from turning inadvertently. A pair of stoppers 22, 22 protrudes from the upper surface of the locking plate 20 at predetermined positions facing each other by 180 degrees.

An end plate 13 is welded to the upper open end 12 of the pillar 11 on the second floor, similar to the pillar 1 on the second floor. A circular insertion hole 14 is formed in the center of the end plate 13, and a back naphof 15 is welded to the back surface of the end plate 13 in correspondence with the insertion hole 14.

゛The guide bottle 30 has a shank portion 32 having a threaded portion 31.
and a conical (tapered shape) head portion 33. The shank portion 32 is connected to the back nut 1
It is designed to be hinged to 5.

Further, the end surface of the head portion 33 on the side of the end plate 13 is formed into a non-circular shape that is the same shape as the respective insertion holes 8 and 21 or slightly smaller than the through holes 8 and 21. That is, this end surface, the shank portion 3
It has a circular portion 33a having the same diameter as 2, and projecting portions 33b extending on both sides of the circular portion 33a.

The connecting plate 40 is approximately twice the size of the end plate 13 of the pillar 11, and is used to position, fit, and connect the adjacent pillars 11 and 11 on the first floor. . This connection plate 40 has the above-mentioned through holes 8 and 2.
Two non-circular insertion holes 41 and 41 having substantially the same shape as 1 are formed.

In the above configuration, the end plate 7 of the second floor column 1 is joined to the end plate 13 of the first floor column 11 by one guide pin 30. To explain in detail, first, the shank part 32 of the guide bottle 30 is attached to the back nut 15 of the end plate 13 of the pillar 11 on the - floor.
to attach to the bow. From this state, as shown in FIG. 7, the guide pin 30 is inserted into the insertion hole 41 of the connecting plate 40, and the connecting plate 40 is placed on the end plate 13.

Next, the building unit on the second floor is suspended by a crane or the like, and the end plate 7 of the column 1 and each insertion hole 8 of the locking plate 20,
The pillar 1 is placed on the pillar 11 while inserting the guide bottle 30 through the pillar 21. At this time, since the head portion 33 of the guide bottle 30 is conical, the column 1 can be guided accurately and easily.

Next, as shown in FIG. 9, a long T-wrench 50 (tightening jig) is inserted through the insertion hole 4 of the end plate 3 of the column 1 and the back nut 5, and guided through the insertion hole 10a of the diaphragm 10. At the same time, the four tip portions 51 are fitted into the head portion 33 of the guide bottle 30, and the guide bottle 30 is rotated. At this time, since there is a slight gap between the blade part 33 of the guide bin 30 and the locking plate 20, as shown in FIG.
As shown in FIG. 2, initially only the guide bin 30 rotates and the locking plate 20 does not rotate. And guide bottle 30
When the projecting portion 33b of the head portion 33 of the locking plate 20 hits the stopper 22 of the locking plate 20, the guide bottle 30 and the locking plate 2
0 rotates together.

At this time, the adhesive state between the locking plate 20 and the end plate 7 is released. Due to the above-mentioned locking action, the head portion 33 of the guide bottle 30 and the insertion hole 21 of the locking plate 20 are aligned at 90 degrees.
Since the shifted state is ensured, the head portion 33 of the guide bin 30 does not enter the respective insertion holes 8 and 41 of the end plate 7 and the connecting plate 40, and the end plate 7 is inserted into the end of the pillar 11 on the first floor. It can be securely tightened to the plate 13 side.

As a result, the upper and lower columns 1 and 11 are firmly joined by tightening one guide pin 30.

Further, since the operator can hold the guide bottle 30 by hand and fit it into the nut 15 of the end plate 13, the screwing operation of the guide bottle 30 is easy. long wrench 50
The guide pin 30 can be rotated and tightened by
Since there is no need to provide an operation port on the lower side of the pillar 1,
The strength of column 1 will not drop by 1 degree. Moreover, the T-wrench 50 is attached to the guide bin 3 which is hinged to the pillar 11 on the first floor in advance.
Since it is only necessary to tighten 0, the tightening work can be performed reliably and easily.

The shank portion 3 of the guide bottle 30 is in the joined state shown in FIG.
2 is inserted into the circular hole 8a of the insertion hole 8 of the end plate 7, and only a small gap is formed between the two, so that the horizontal shearing force acting between the columns 1 and 11 is It has sufficient strength.

This invention is not limited to the above-mentioned embodiments, and various embodiments are possible. For example, the rotation of the locking plate 20, in other words,
To confirm the completion of the work, a small hole may be made in the corner of the pillar 11 to observe the tightening process.
As shown in , one end of a wire is connected to the locking plate 20, and the other end is brought out through a small hole (not shown) in the pillar 11, and this wire is pulled in by the rotation of the locking plate 20. may be observed. Further, the shapes of the insertion holes 8 and 21 of the locking plate 20 and the end plate 8 may be any shape as long as they are non-circular. can be applied.

(Effects of the Invention) As described above, in the present invention, the tube body can be accurately and easily positioned relative to the connected portion by guiding it with the guide bin. By tightening the guide pin via the locking plate, the end of the tube can be firmly joined to the connected part. In addition, since a long tightening jig can be used, there is no need to provide an operation port for joining work near the joint of the pipe body, which is required in the past, and this prevents a decrease in the strength of the pipe body. can.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a cross-sectional view showing the joined state of the pillars, FIG. 2 is a cross-sectional view taken along line X-X in FIG. 9, and FIG. 3 is a cross-sectional view showing the end portion. FIG. 4 is a plan view of the locking plate, FIG. 5 is a side view of the plate, FIG. 6 is a plan view of the connecting plate, and FIG. 7 is a plan view of the connecting plate and the end plate of the column attached to the guide bin. A sectional view showing the state immediately before insertion, Figure 8 is a plan view of the first floor pillar with the guide bottle hinged,
Figure 9 is a sectional view showing the state just before the guide bottle is tightened with a T-wrench, Figure 10 is a sectional view taken along the line X-X in Figure 9, and Figure 11 is a state where the guide bottle is tightened with a T-wrench. FIG. 12 is a cross-sectional view taken along line X--X in FIG. 9. DESCRIPTION OF SYMBOLS 1... Pillar (pipe body), 2... End part, 7... End plate, 8... Insertion hole, 11... Pillar (connected part), 2
0... Locking plate, 21... Insertion hole, 30...
Guide bottle, 32...shank part, 33... head part.

Claims (1)

[Claims] (1) In a pipe joining structure in which an end of the pipe is joined to a connected part, an end plate provided at the end of the pipe and having a non-circular insertion hole, and an upper part of the end plate. A locking plate is disposed in the end plate and has a non-circular insertion hole that is approximately the same shape as the insertion hole in the end plate, a shank part and a head part.The shank part is screwed into the connected part and the head part is a tapered part. A guide pin is provided with a tapered and non-circular shape whose end surface on the side of the connected portion is approximately the same shape as or slightly smaller than each insertion hole of the end plate and the locking plate, and the guide pin The end plate is inserted into each insertion hole of the end plate and the locking plate, and with its head portion displaced from the insertion hole of the locking plate, the end plate is tightened to the side to be connected via this locking plate. A pipe joint structure characterized by: