JPH08114029A - Joint structure of frame body - Google Patents

Abstract

PURPOSE: To increase strength of a joint, and compensate lack of strength of light alloy welding by installing a joint cylinder body on one pipe, and integrally installing a pipe support gusset to fit and support the other pipe on an outer peripheral surface of the joint cylinder body. CONSTITUTION: An internal pipe support gusset 13 having a vertical width almost the same with an inside diameter of a horizontal pipe 2 is protrusively arranged on an outer peripheral surface of a vertical joint cylinder body 11, and an external pipe support gusset 14 is integrally installed on a lower extension surface of the gasset 13 by holding a slit g1 almost equal to a thickness of the pipe 2. Next, the gasset 13 is inserted into an end part of the pipe 2, and a lower part of the pipe 2 is inserted into the slit g1, and the cylinder body 11 and the pipe 2 are joined together by fillet welding, and a joint B1 is constituted. Next, since a part of a vertical directional load applied to the pipe 2 is supported by the gasset 13, a burden of a welding 3 part is reduced, and strength of the joint B1 is increased, and lack of strength of light alloy welding can be sufficiently compensated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure which can be suitably used for a frame body such as a scaffolding frame.

[0002]

2. Description of the Related Art Conventionally, a frame body such as a scaffolding frame is constructed by connecting a large number of constituent members such as steel pipes through joints. The edges are fillet welded.

However, recently, due to the aging of workers, a lightweight frame body in which the constituent members of the frame body are changed to light alloys has become popular for easy handling.

[0004]

However, although the frame member is made of a light alloy to reduce the weight, the joint is still constructed as before, and the fillet welding is generally performed with a higher base metal strength. Since the strength of light alloy welding is only about 1/2, and the strength of light alloy welding, which is lower than that of steel material, is not taken into consideration, the strength of the joint is insufficient and it is necessary to compensate for this lack of strength. There is a problem that the cost increases due to an increase in the reinforcing member and man-hours.

[0005]

According to the present invention, in a joint structure of a frame body for connecting crossed pipes constituting a frame body by using a joint cylinder body, the joint cylinder body is attached to one pipe and The joint structure of a frame body is characterized in that a pipe supporting gusset for fitting and supporting the other pipe is integrally attached to the outer peripheral surface of the cylindrical body.

According to the present invention, an inner pipe supporting gusset is integrally attached to the outer peripheral surface of a joint cylindrical body into which one of crossed pipes constituting a light alloy frame can be inserted, and the other one is attached. A frame body, characterized in that one end portion of the pipe is fitted to the inner pipe supporting gusset, the end surface of the end portion is brought into close contact with the outer peripheral surface of the joint cylinder, and the close contact portion is welded. The present invention relates to the joint structure.

According to the present invention, an inner pipe supporting gusset and an outer pipe supporting gusset are provided on the outer peripheral surface of a joint cylinder into which one of crossed pipes constituting a light alloy frame can be inserted. Attached integrally via the slit,
While fitting one end of the other pipe into the inner pipe support gusset through the slit, bring the end face of the same side end into close contact with the outer peripheral surface of the joint cylinder, weld the close contact portion, and connect the other pipe The present invention relates to a joint structure of a frame body, which is configured by welding an outer peripheral surface of an end portion of the outer peripheral surface and a gusset for supporting an external pipe.

According to the present invention, an inner pipe supporting gusset is integrally attached to the outer peripheral surface of one joint cylinder into which one of the intersecting pipes constituting the light alloy frame can be inserted. , The inner pipe supporting gusset is concentrically surrounded by the other joint cylinder with a gap, and one end of the joint cylinder is brought into close contact with the outer peripheral surface of one joint cylinder, and A joint for a frame body, which is constructed by welding and fitting one end portion of the other pipe into the joint body through a gap, and abutting the end surface thereof on the outer peripheral surface of one joint body. It is related to the structure.

According to the present invention, the inner pipe supporting gusset and the outer pipe supporting gusset are provided on the outer peripheral surface of the one joint cylinder into which one of the intersecting pipes constituting the light alloy frame can be inserted. The gusset and the inner pipe supporting gusset are integrally mounted through a slit, the inner pipe supporting gusset is concentrically surrounded by the other joint cylinder through the slit, and a gap is formed, and one end of the joint cylinder is connected to one joint. Closely contact the outer peripheral surface of the tubular body, weld the close contact portion, and insert one end of the other pipe into the joint main body through the gap, and contact the end surface with the outer peripheral surface of one joint main body. The present invention relates to a joint structure for a frame body, which is in contact with the outer peripheral surface of the joint tubular body and is welded to the external pipe supporting gusset along the slit.

[0010]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a frame A made of a light alloy pipe having a joint structure according to the present invention.

Hereinafter, one pipe and the vertical joint cylinder are referred to as a vertical pipe and a joint cylinder, respectively, and the other pipe and the joint cylinder are referred to as a horizontal pipe and a horizontal joint cylinder, respectively.

In FIG. 1, B1 indicates the joint of the first embodiment, in which the other end of the intersecting pipe is attached to the outer peripheral surface of the vertical joint cylinder 11 fitted on the longitudinal pipe 1 forming one of the intersecting pipes. The ends of the horizontal pipes 2 forming the above are joined by fillet welds 3 to form a joint B1.

As shown in FIGS. 2 to 5, the vertical joint cylinder 11 has a substantially rectangular inner pipe having an upper and lower width substantially equal to the inner diameter of the horizontal pipe 2 on the outer peripheral surface of the vertical joint cylinder 11. The supporting gusset 13 is projected or attached by integral molding, and a slit (spacing) g1 equal to or slightly wider than the wall thickness of the horizontal pipe 2 is held on the downward extension surface of the internal pipe supporting gusset 13 and the outside. The pipe supporting gusset 14 is integrally attached by integral molding, welding or the like.

The inner pipe supporting gusset 13 and the outer pipe supporting gusset 14 are preferably vertical joint cylinders.
When extruding 11, the strip-shaped protruding portion is integrally formed with the vertical joint cylinder 11 on the outer peripheral surface of the vertical joint cylinder 11, and then,
The vertical pipe cylinder 11 is formed by cutting off the inner pipe supporting gusset 13 and the outer pipe supporting gusset 14 while cutting the other.
The inner pipe supporting gusset 13 and the outer pipe supporting gusset 14 that are integral with can be easily formed, and
Since the overall length of the vertical joint cylinder 11 is short, there are few cutouts,
Less material is wasted.

On the other hand, the end surface 16 of the horizontal pipe 2 is formed in a curved shape with a hollow in plan view as shown in FIGS. 2 and 3 so as to be coded on the outer peripheral surface of the vertical joint cylinder 11. , The inner pipe supporting gusset 13 in the end of the horizontal pipe 2
And the lower part of the end of the horizontal pipe 2 is inserted into the slit g1 so that the end face 16 of the horizontal pipe 2 is inserted into the vertical joint cylinder 11.
The outer peripheral surface of the vertical joint cylinder 11 and the outer peripheral surface of the horizontal pipe 2, and the outer peripheral surface of the horizontal pipe 2 and the outer pipe supporting gusset 14. To TIG
Alternatively, they are joined by fillet welding 3 by MIG to form a joint B1 integral with the lateral pipe 2.

As shown in FIG. 1, the joint B1 has a vertical joint cylinder 11 fitted on a predetermined position of the vertical pipe 1, and a blind rivet or a bolt and nut in which the vertical joint cylinder 11 and the vertical pipe 1 are inserted. The frame A can be configured by fixing the fasteners 7 such as.

With this configuration, the load applied to the horizontal pipe 2 is dispersedly supported by the fillet weld 3 portion, the internal pipe supporting gusset 13 and the external pipe supporting gusset 14 and transmitted to the vertical pipe 1. In particular, since the internal pipe supporting gusset 13 inserted into the end of the horizontal pipe 2 supports a part of the load in the vertical direction, the burden on the fillet weld 3 is reduced and the joint B1 Increasing strength,
The insufficient strength of light alloy welding can be sufficiently compensated.

In FIG. 6, the inner pipe supporting gussets 23 and the outer pipe supporting gussets 24 projecting from the outer peripheral surface of the large diameter vertical pipe 21 are fitted to the end faces of the small diameter horizontal pipes 22, and fillet welding is performed. 3 shows the joint B2 of the second embodiment joined at 3.

In FIG. 7, an end face of a horizontal pipe 32 having a quadrangular cross section is joined by fillet welding 3 to an inner pipe supporting gusset 33 and an outer pipe supporting gusset 34 which are provided so as to project on the outer peripheral surface of a vertical pipe 31 having a circular section. The joint B3 of the third embodiment is shown.

In FIG. 8, an end face of a horizontal pipe 42 having a rectangular cross section is joined by fillet welding 3 to an inner pipe supporting gusset 43 and an outer pipe supporting gusset 44 which are provided on the outer peripheral surface of a vertical pipe 41 having a rectangular cross section. The joint B4 of the fourth embodiment is shown.

FIG. 9 shows that an end face of a horizontal pipe 52 having a thin rectangular cross section is welded to an inner pipe supporting gusset 53 and an external pipe supporting gusset 54 projecting from the outer peripheral surface of a vertical pipe 51 having a thick square cross section. The joint B5 of the fifth embodiment, which has been joined by means of FIG.

The sixth embodiment shown in FIGS. 10 and 11 relates to a modification of the joint B1 shown in FIGS. 1 to 5, and does not use the external supporting gusset 14 but the internal supporting gusset 13
This is a case where the joint B6 is constructed by using only.

The seventh embodiment shown in FIGS. 12 and 13 is
In addition to the vertical joint cylinder 61 having substantially the same shape as that of the first embodiment, the joint B7 has a horizontal joint cylinder having an inner diameter into which the horizontal pipe 2 can be fitted.
It is characterized by being configured using 62.

The vertical joint cylinder 61 is formed to have substantially the same shape as that of the first embodiment as described above, but the vertical width of the internal pipe supporting gusset 63 is fitted into the horizontal joint cylinder 62. The inner diameter of the pipe, and the slit (gap) between the inner pipe supporting gusset 63 and the outer pipe supporting gusset 64 g6
Is substantially the same as the value obtained by adding the wall thickness of the horizontal joint tubular body 62, the wall thickness of the horizontal pipe 2 and the wall thickness of the horizontal pipe 2 to the first embodiment.

The end portion of the horizontal joint cylinder 62 is fitted into the inner pipe supporting gusset 63 and the outer pipe supporting gusset 64 of the vertical joint cylinder 61, and the outer pipe supporting gusset is fitted.
With the outer peripheral surface of the end portion of the horizontal joint tubular body 62 in contact with 64, the vertical joint tubular body 61 and the external pipe supporting gusset are attached to the horizontal joint tubular body 62.
If the integral joint B7 is formed by fillet welding 3 with 64, the thickness of the horizontal pipe 2 is exactly between the inner peripheral surface of the horizontal joint tubular body 62 and the upper and lower edges of the internal pipe supporting gusset 63. Since the intervals of the same size are formed, when the end portion of the horizontal pipe 2 which is just cut at a right angle to the axis is fitted, the outer peripheral surface of the horizontal pipe 2 is fitted to the inner peripheral surface of the horizontal joint cylinder 62, The inner peripheral surfaces of the pipes come into contact with the upper and lower edges of the inner pipe supporting gusset 63, and in this state, the vertical pipe 1 and the horizontal pipe 2 are connected to the joint B7 with the fasteners 7 such as blind rivets and bolts and nuts. By fixing and, the vertical pipe 1 and the horizontal pipe 2 can be connected.

In particular, in the seventh embodiment, the joint B7 and the horizontal pipe 2 are constructed separately, and cut into predetermined lengths in both the vertical joint cylinder 61 and the horizontal joint cylinder 62. Since the vertical pipe 1 and the horizontal pipe 2 can be joined together by inserting the ends of the vertical pipe 1 and the horizontal pipe 2, the vertical and horizontal dimensions of the frame A and the arrangement of the vertical pipe 1 and the horizontal pipe 2 are arranged. The pitch can be set freely, which is convenient for the frame A on site alignment.

It is also possible that the inner pipe supporting gusset 63 abuts on the inner peripheral surface of the end portion of the lateral pipe 2 and bears a part of the load applied to the lateral pipe 2 to increase the strength of the joint B7. The same as the above-described first to sixth embodiments.

As shown in FIG. 14, a large number of vertical pipes 1 and horizontal pipes 2 are connected to the various joints B1, B2, B3, B4, B described above.
5, B6 can be used to construct a three-dimensional scaffolding frame D, and since each joint B1, B2, B3, B4, B5, B6, B7 has sufficient strength, it is lightweight and sufficient. A framework having strength can be constructed.

[0030]

According to the present invention, in the joint structure of the frame body in which the intersecting pipes forming the frame body are connected using the joint cylinder body, the joint cylinder body is attached to one pipe, and
A pipe support gusset for fitting and supporting the other pipe is integrally attached to the outer peripheral surface of the joint cylinder.

Therefore, most of the load applied to the other pipe can be supported by the gusset for supporting the internal pipe, the burden on the welded portion is lightened, the strength of the joint is increased, and the insufficient strength of the light alloy welding is sufficiently achieved. Can be supplemented.

According to the present invention, the inner pipe supporting gusset and, if necessary, the outer pipe supporting are provided on the outer peripheral surface of the joint cylinder into which one of the intersecting pipes constituting the light alloy frame can be inserted. Mounting gusset integrally through the slit, fit one end of the other pipe through the slit into the inner pipe support gusset, and make the end face of the same side end closely contact the outer peripheral surface of the joint cylinder. The outer peripheral surface of the other end of the pipe and the external pipe supporting gusset are welded together.

Therefore, the load applied to the other pipe is distributively supported by the welded portion, the inner pipe supporting gusset and the outer pipe supporting gusset and transmitted to the one pipe, in particular, the other pipe. Part of the load is supported by the internal pipe support gusset inserted at the end of the pipe, so the burden on the fillet welds is lightened, the strength of the joint is increased, and the insufficient strength of light alloy welding is sufficient. Can be compensated for.

Further, according to the present invention, the inner pipe supporting gusset and, if necessary, the inner pipe supporting gusset are provided on the outer peripheral surface of the one joint cylinder into which one of the intersecting pipes constituting the light alloy frame can be inserted. And the outer pipe supporting gusset are integrally attached through a slit, and the inner pipe supporting gusset is concentrically surrounded by the other joint cylinder through the slit with a gap, and one end of the joint cylinder is also provided. Part is brought into close contact with the outer peripheral surface of one joint cylinder, the close contact portion is welded, and one side end of the other pipe is inserted into the joint main body through a gap, and the end surface is connected to one joint main body. The outer peripheral surface of the joint tubular body is welded along the slit with the outer pipe supporting gusset.

Therefore, similarly to the above, it is possible to sufficiently compensate for the insufficient strength of the light alloy welding, and further, to insert a pipe just cut into a predetermined length into both joint cylinders,
Since the intersecting pipes can be connected, the size of the frame body and the arrangement pitch of the pipes can be freely set.

[Brief description of drawings]

FIG. 1 is a front view of a frame body having a joint structure according to the present invention.

FIG. 2 is an exploded perspective view of the joint of the first embodiment.

FIG. 3 is a perspective view of the joint of the first embodiment.

FIG. 4 is a sectional front view of the joint of the first embodiment.

FIG. 5 is a side view of the joint of the first embodiment.

FIG. 6 is a front view of the joint of the second embodiment.

FIG. 7 is a front view of the third embodiment.

FIG. 8 is a front view of the fourth embodiment.

FIG. 9 is a front view of the fifth embodiment.

FIG. 10 is a sectional front view of the joint of the sixth embodiment.

FIG. 11 is a side view of the joint of the sixth embodiment.

FIG. 12 is a sectional front view of the joint of the seventh embodiment.

FIG. 13 is a side view of the joint of the seventh embodiment.

FIG. 14 is a perspective view of a scaffolding frame including a joint structure according to the present invention.

[Explanation of symbols]

 A Frame B1 joint B7 joint 1 One pipe (longitudinal pipe) 2 The other pipe (horizontal pipe) 3 Fillet weld 11 Joint cylinder 13 Gusset for inner pipe support 14 Gusset for outer pipe 61 One joint cylinder ( Vertical joint cylinder) 62 Other joint cylinder (horizontal joint cylinder) 63 Inner pipe support gusset 64 External pipe support gusset

Claims (5)

[Claims] 1. In a joint structure of a frame body in which crossed pipes constituting a frame body are connected by using a joint cylinder body, the joint cylinder body is attached to one pipe, and the other side is attached to the outer peripheral surface of the joint cylinder body. A joint structure for a frame, characterized in that a pipe support gusset for fittingly supporting the above pipe is integrally attached. 2. An inner pipe on the outer peripheral surface of a joint cylinder body (11) into which one of the intersecting pipes (1) (2) constituting the light alloy frame body (A) can be inserted. The support gusset (13) is integrally attached, one end of the other pipe (2) is fitted into the inner pipe support gusset (13), and the end face of the end is joined to the joint cylinder (11). A joint structure for a frame body, which is configured to be in close contact with the outer peripheral surface of and welded at the close contact portion. 3. An inner pipe is provided on an outer peripheral surface of a joint cylinder (11) into which one of the intersecting pipes (1) (2) constituting the light alloy frame (A) can be inserted. The supporting gusset (13) and the external pipe supporting gusset (14) are integrally attached through a slit, and one end of the other pipe (2) is fitted into the inner pipe supporting gusset (13) through the slit. While fitting, the end face of the same side end is brought into close contact with the outer peripheral surface of the joint tubular body (11), the close contact portion is welded, and the other pipe (2)
A joint structure for a frame body, which is constructed by welding an outer peripheral surface of an end portion of the base and an external pipe supporting gusset (14). 4. The outer peripheral surface of one joint cylindrical body (61) into which one pipe (1) of the intersecting pipes (1) and (2) constituting the light alloy frame (A) can be inserted. , Internal pipe support gusset (6
3) is integrally attached to the inner pipe support gusset (63)
Is surrounded by the other joint cylinder (62) concentrically and with a gap, and one end of the joint cylinder (62) is brought into close contact with the outer peripheral surface of the one joint cylinder (61) to ensure close contact. Weld the parts,
In addition, the one side end of the other pipe (2) is fitted into the joint body (62) through a gap, and the end face is in contact with the outer peripheral surface of the one joint body (61). The joint structure of the frame body. 5. The outer peripheral surface of one joint cylindrical body (61) into which one pipe (1) of the intersecting pipes (1) (2) constituting the light alloy frame (A) can be inserted. , Internal pipe support gusset (6
3) and the external pipe supporting gusset (64) are integrally attached through a slit, and the internal pipe supporting gusset (63) is concentrically surrounded by the other joint tubular body (62) with a gap through the slit. In addition, one end portion of the joint cylinder (62) is brought into close contact with the outer peripheral surface of one joint cylinder (61), the close contact portion is welded, and the other end is in the joint body (62). pipe
(2) Insert one end of the joint through the gap, abut the end face of the joint body (61) on one side, and connect the outer peripheral surface of the joint cylinder (62) to the external pipe support gusset ( 64) A joint structure for a frame body, which is constructed by welding and along the slit.