JPS592384Y2 - Mutual fixings for built-in pipes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mutual fixing device for fixing the ends of internal and external tubes to each other.

When shipping several types of pipes with different diameters, the ship's hold space can be used effectively by incorporating multiple pipes.

The tubes thus assembled are mutually supported by a spacer interposed between the inner and outer tubes.

However, support by spacers alone cannot prevent the tubes from moving relative to each other in the axial direction, and there is a problem that handling such as loading and unloading is unstable.

Therefore, an attempt has been made to fix the tubes to each other using a jig that extends diametrically across the ends of the tubes, but this has the problem of increasing the size and increasing the material cost.

Additionally, if the diameter difference between the pipes to be assembled is small, the sockets will interfere with each other and the end faces of the sockets will not be flush after assembly, and in such cases it is extremely difficult to fix the pipes together. It was difficult.

The present invention provides a mutual fixing device that can reliably fix the ends of the built-in pipes to each other when the sockets of the built-in pipes interfere with each other, and is small and easy to install.

For this reason, the present invention has a retaining part at one end that engages both sides of the flange on the inner circumferential edge of the end of the outer tube and engages with a step on the outer surface of the inner tube facing in the opposite direction from the end surface. a hook member whose other end extends further than the end of the inner tube that slightly protrudes from the tube end; and a hook member whose other end extends further than the end of the inner tube that slightly protrudes from the tube end; This member is provided so that the pipes, which are assembled with their end positions shifted in order to prevent interference of the sockets, can be reliably fixed to each other.

Embodiments of the present invention will be described below based on the drawings.

In Figures 1 to 4, 1 is a mutual fixing device, M1 to M3
are a small diameter pipe, a medium diameter pipe, and a large diameter pipe built into each other.

These pipes M1 to M3 are made of cast iron pipes, each having a socket m at one end and a flange n at the inner peripheral edge of the end.

The base tubes M1 to M3 are assembled with their end faces sequentially shifted slightly.

A plurality of mutual fixing devices 1 are arranged at appropriate intervals in the circumferential direction between the large diameter pipe M3 and the medium diameter pipe M2, and between the medium diameter pipe M2 and the small diameter pipe M1.

The mutual fixture 1 includes a hook member 2 and an abutment member 3.

To explain the case where it is installed between a large diameter pipe M3 and a medium diameter pipe M2, the hook member 2 has an engaging portion 9 at one end that engages both sides of the flange n of the large diameter pipe M3, and the other end It extends beyond the end face of the medium diameter pipe M2.

The retaining portion 9 is formed of a rising portion 4 that engages with the inner surface of the flange n of the large-diameter pipe M3, and a curved portion 13 that engages with the inner peripheral edge P of the outer surface of the flange n.

The extending portion 5 of the hook member 1 is provided with a hole 6 into which the abutment member 3 is fitted.

The abutting member 3 abuts against the end face of the medium diameter pipe M2, is made of a round bar, and is welded to the locking plate 7 by welding 8.

The end of the locking plate 7 extends to the vicinity of the outer surface of the flange n of the large diameter pipe M3.

The abutment member 3 is provided with a through hole 10, through which a split pin 11 for preventing detachment that engages with the hook member 2 is inserted.

Note that the extension portion 5 of the hook member 2. The abutting member 3 can be coupled to the contact member 3 by various engagement structures other than the fitting through the hole 6 as described above.

In this case, the concept of "fitting" includes fitting.

The attachment of the mutual fixing device 1 is simple if it is carried out together with the assembly of the tubes M1 to M3.

When assembling, for example, the small-diameter pipe M1 is fitted onto a suitable cantilevered support arm and supported upward, and the medium-diameter pipe M2 and large-diameter pipe M3 are sequentially transported and fitted onto this using a cart or the like. .

At this time, when the end face of the medium diameter pipe M2 reaches the vicinity of the end face of the small diameter pipe M1, the flap of the medium diameter pipe M2.

The hook member 2 of the mutual fixing tool 1 is engaged with the screw n, and temporarily fixed with adhesive tape or the like.

After this, the outer surface of the curved part of the hook member 2 is connected to the small diameter pipe M1.
The medium diameter pipe M2 is moved until it comes into contact with the stepped portion l on the outer surface of the pipe M2.

Then, the abutting member 3 fixed to the locking plate 7 is inserted into the hole 6 of the hook member 2, and the split pin 11 is inserted into the through hole 10 of the abutting member 3.
Attach to.

Then, similarly to this, each mutual fixing tool 1 is attached across the large-diameter pipe M3 and the medium-diameter pipe M2 while fitting the large-diameter pipe M3 onto the outside.

Note that spacers 12 are interposed between the inner and outer surfaces of the base tubes M1 to M3 near the other ends at appropriate intervals in the circumferential direction.

The spacer 12 is made of a piece of rubber, a piece of wood, or the like.

When the mutual fixing device 1 is installed in this way, the medium diameter pipe M2 and the small diameter pipe M1 are connected so that the retaining part 9 engages both sides of the flange n of the medium diameter pipe M2, and the end face of the small diameter pipe M1. When the abutting member 3 comes into contact with the stepped portion l, the curved portion 13 of the hook member 2
are engaged with each other, so that they are securely fixed without shifting from each other in the axial direction.

Similarly, the large-diameter pipe M3 and the medium-diameter pipe M2 are fixed by another mutual fixture 1, and these base pipes M1 to M3 are also securely fixed without wobbling in the axial direction.

Note that if the end of the locking plate 7 extends to the vicinity of the flange n, the locking plate is prevented from rotating by engagement with the flange n.

Note that although the above embodiment has been described with reference to the case where the parts are assembled in three layers, it is possible to fix them in the same manner as described above not only in the case of two layers but also in the case of four or more layers.

FIGS. 5 and 6 show another embodiment, in which a fitting portion 14 into which a flange n of a small-diameter pipe M1 fits is extended at one end of the abutment member 3.

The other end of the abutment member 3 is provided with a protrusion 16 that fits into the square hole 15 of the hook member 2, and a hole provided in a portion of the protrusion 16 that protrudes from the hook member 2 is provided with a pull-out stopper. pin 17
is inserted.

Incidentally, instead of the protrusion 16 of the abutting member 3 and the hole 15 of the hook member 2, notches 18 are provided in both members 2 and 3 as shown in FIG.
19 and these notches 1B.

19 may be engaged with each other.

In such a configuration, the fitting portion 14 of the abutting member 3 fits into the flange n of the small diameter pipe M1, so that the pipe M can be connected more reliably.
15M3 are fixed to each other.

FIG. 8 shows yet another embodiment, in which the mutual fixing device 1 is configured to be attached across three base tubes M1 to M3.

That is, the hook member 2a that engages with both sides of the flange n of the medium diameter pipe M2 and the abutting member 3a that abuts the end face are constituted by an integrated intermediate member 20.

The portion of the intermediate member 20 that contacts the medium diameter pipe M22 and the portion that fits into the flange n is made of a round shaft-like body, and the portion that constitutes the extension portion 5 is made of a plate-like body.

The hook member 2b that engages with both sides of the flange n of the large-diameter pipe M3 is formed of a plate-like body similar to the example shown in FIG. 3a is fitted.

Reference numeral 21 denotes a pin inserted into a hole in the intermediate member 20 to prevent removal.

The contact member 3b that comes into contact with the end surface of the small diameter pipe M1 is made of a shaft-shaped body, and has a U-shaped fitting part 14 that fits into the flange n of the small diameter pipe M1 at one end, and a U-shaped fitting part 14 that fits into the flange n of the small diameter pipe M1 at the other end. is fitted into a hole in the extending portion 5 of the intermediate member 20.

22 is a pin fitted into a hole of the contact member 3b.

In such a configuration, the three base tubes M1 to M3 are directly fixed together by the mutual fixing tool 1.

Note that when assembling four or more layers, an intermediate member 20 is added.

FIG. 9 shows still another embodiment, in which the contact member 3 that contacts the end face of the small diameter pipe M0 has an extending portion 5 of the hook member 2C that engages both sides of the flange n of the medium diameter pipe M2, Large diameter pipe M
It is inserted through the extending portion 5 of the hook member 2d that engages both sides of the flange n of the hook member 2d.

Further, the abutting member 3 is inserted through a hook-shaped member 23 that engages with the inner surface of the flange n of the small diameter pipe M1.

Reference numeral 24 denotes a split pin inserted into the hole of the abutting member 3 to prevent removal.

Also in the case of such a configuration, the three base tubes M1 to M3 can be directly fixed together.

The present invention can be implemented as described above, whereby the flange of the outer tube is engaged with both sides of the flange and the step of the outer surface of the inner tube facing in the direction opposite to the end surface is engaged with. a hook member having an engaging portion at one end and the other end extending from the end of the inner tube; and a contact member that engages with the extending portion of the hook member and comes into contact with the end surface of the inner tube. Therefore, the tubes that are assembled with their end positions shifted due to the interference of the sockets can be reliably fixed to each other.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; Fig. 1 is a front view of a built-in pipe with mutual fixing devices attached, Fig. 2 is a longitudinal sectional view of the same, and Fig. 3 shows the arrangement of two mutual fixing devices. 4 is a plan view of the mutual fixing device, FIG. 5 is a side view of a modified example of the mutual fixing device, FIG. 6 is a partially cutaway front view of the same mutual fixing device, and FIG. 7 is a partially cutaway side view of the mutual fixing device. FIG. 8 is a side view of still another modification of the mutual fixing device; FIG. 9 is a side view of still another modification. 1... Mutual fixing tool, 2, 2a to 2d...
・Hook member, 3.3a, 3b...Abutting member, 4...Rising portion, 5...Extending portion,
6...hole, 7...locking plate, 9...
...Engagement part, 10...Hole, 11...Cotter pin, 12...Spacer, 13...
Curved part, 14... Fitting part, 20... Intermediate member, M1 to M3... Pipe, m... Socket, n... ...Flange.

Claims (1)

[Scope of utility model registration request] One end has a retaining part that engages with both sides of the flange on the inner peripheral edge of the outer tube and engages with a step on the outer surface of the inner tube facing in the opposite direction from the end surface, and the other end It comprises a hook member that extends further than the end of the inner tube that slightly projects from the end, and a contact member that engages with the extension of the hook member and comes into contact with the end surface of the inner tube. A mutual fixing device for built-in pipes, characterized by: