KR960007818Y1 - Joint-and-beam platform - Google Patents

Abstract

No summary

Description

Joint and pipe connection structure

The present invention relates to a joint structure of a joint and a pipe, and more particularly, to a joint structure of a joint and a pipe for decomposingly connecting a pipe made of a resin joint and a resin coated steel pipe.

(Conventional technology)

Conventionally, this type of joint and pipe connection structure is made of resin-coated steel pipe in a pipe insertion hole of a pipe insertion tube of a resin joint which is integrally joined to form a required angle such as an L shape, a T shape, a V shape, or a straight shape. The pipe is inserted into the pipe, and the pipe has a demountable connection structure in which a tapping screw is screwed from the screw insertion hole of the pipe insertion cylinder.

In the screwing of the tapping screw, the lower hole is drilled in a pipe inserted into the pipe insertion hole from a hole previously installed in the pipe insertion tube.

(Problem that plan is going to solve)

However, in the conventional connection structure of the joint and the pipe, since the bottom hole to which the tapping screw is screwed is installed in the pipe made of the resin coated steel pipe, there is a drawback that the rusting and the drilling work are complicated.

On the other hand, a pipe structure constructed by connecting a pipe made of one resin coated steel pipe in a decomposable manner using a resin joint has the advantage of being light in weight and easy to change and repair, while having low load resistance and high loads. In pipe structures such as trolleys and shelf frames, it is required to connect a double pipe composed of two resin coated steel pipes in a decomposable manner using a resin joint to increase its load resistance.

The object of the present invention is to provide a joint structure of a joint and a pipe that can be easily and accurately connected to the resin joint and the double pipe in a degradable connection, and at the same time there is no rust.

In order to solve the above problems, the first joint and the pipe connecting structure of the present invention have a resin joint and two resin coatings in which a plurality of pipe insertion cylinders having a B-shaped pipe insertion hole are integrally joined at a required angle. Steel pipes are joined together by mutually engaging protrusions formed in the longitudinal direction of each coating resin, and are connected to a double pipe insertable into the pipe insertion hole, and are curved walls of the pipe insertion tube of the resin joint. The bolt insertion hole is provided in the middle of the height at the side), while the nut hole is provided in the protrusion of the double pipe in correspondence with the bolt insertion hole, and the double pipe is caught over a part of the outer circumference of the resin coated steel pipe. The plate nut inserted into the nut hole is placed on the straight wall side of the pipe insertion cylinder portion and inserted into the pipe insertion hole. The threaded holes of the plate nut, the bolt inserted in the bolt insertion hole is inserted.

The second joint and pipe connection structure includes a resin joint in which a plurality of pipe insertion cylinders having a B-shaped pipe insertion hole are integrally joined at a required angle, and two resin coatings that can be inserted into the pipe insertion hole. It is a connection structure with a double pipe made of steel pipe, and a bolt insertion hole is provided in the middle of the height of the curved wall side of the pipe insertion cylinder portion of the resin joint, while a double pipe is inserted into the pipe insertion hole of the pipe insertion cylinder portion, and at least the pipe insertion is performed. The straight wall side of the pipe insertion tube portion so that a double pipe having a rod or plate nut having a length equal to the depth of the hole and a threaded hole corresponding to the bolt insertion hole is inserted into the pipe insertion hole over the portion of the outer circumference of both resin coated steel pipes. Inserted into the rod and inserted into the threaded hole of the rod or plate nut from the bolt insertion hole. The bolt is screwed in.

1 is an exploded perspective view of an essential part of a bogie base having a connection structure of a joint and a pipe of a first embodiment of the present invention;

2 is an exploded perspective view of a joint structure of a joint and a pipe of a second embodiment of the present invention;

3 is a perspective view of another nut of the joint structure of the joint and the pipe of the second embodiment of the present invention;

* Explanation of symbols for main parts of the drawings

2: corner joint 5: depth pipe insertion tube part

6, 24: pipe insertion hole 7, 25: width pipe insertion cylinder

11, 29: bolt insertion hole 14, 27: resin coated steel pipe

15, 16: stone 17: nut hole

18: engaging portion 19, 35: shaft portion

20: plate nut 21, 20, 34: screw hole

22, 32: Bolt 26: Resin Joint

28: double pipe 31: rod nut

33: engaging portion 36: plate nut

In the first means, the screw hole to which the bolt is screwed is not directly drilled into the resin-coated steel pipe itself of the double pipe, and the hole of the lower hole is not necessary. Only when it is located on the straight wall side, the double pipe can be inserted into the pipe insertion hole.

In the second means, the screw hole in which the bolt is screwed like the first means is not directly drilled into the resin-coated steel pipe itself of the double pipe, and the lower hole is unnecessary. The insertion into the pipe insertion hole is possible only when the rod or plate nut is positioned on the straight wall side of the pipe insertion cylinder.

(Example)

Next, the present invention will be described with reference to the drawings.

1 is an exploded perspective view of an essential part of a bogie base having a connection structure of a joint and a pipe of the first embodiment of the present invention.

The trolley base 1 is used by each of the four corner joints 2 and one in both sides of the depth direction (left upper direction in the drawing), and two in front of the width direction (lower left direction in the drawing). It consists of the double pipe 3 which becomes connected to the rectangular frame which can be decomposed by (2), and becomes a frame pipe, and the caster 4 which is detachably attached to the lower part of each corner joint 2, and is.

The corner joint 2 is formed by injection molding an engineering plastic such as PET (polyethylene terephthalate) and has one B-shaped pipe insertion hole (not shown) into which a double pipe 3 in a depth direction is inserted. It has a depth pipe insertion cylinder part 5 and the B-shaped pipe insertion hole 6 into which the double pipe 3 of the width direction is inserted at right angles to this, and the front-end | tip part of the said depth pipe insertion cylinder part 5 (FIG. Of the two ends of the width pipe inserting cylinder 7 and the depth pipe inserting cylinder 5 which are installed at a right angle to the left end) and the proximal end (right end in the drawing) and installed in parallel with each other. A projection fitting tube portion 9 which is provided at an intersection with the width pipe inserting cylinder portion 7 and has a hole 8 penetrated in a vertical direction in which downward projections and the like of the frame (not shown) are disengaged; By pipe insertion tube (5, 7) W surrounded consists of a corner portion of each pipe insertion cylinder portion (5, 7) extending intermediate (延 在) is, the caster mounting portions (10) provided on the front and back in the same shape the height of each part to couple in.

In the curved walls of the pipe insertion cylinders 5 and 7, two bolt insertion holes 11 into which the bolts for fixing the double pipes 3 are inserted are located in the middle of the height, as described later. It is installed spaced apart.

On the other hand, in the caster attachment portion 10, a plurality of bolt insertion holes 12 for the caster mounting bolts are positioned in the middle of the depth direction so that front and back uniformity is not raised, and are spaced apart appropriately in the width direction. ) Is properly installed on both sides of front and back.

Thus, by installing the caster attachment part 10 in the shape of front and back and in the middle of the height of each pipe insertion cylinder part 5 and 7, the corner joint 2 becomes symmetrical in the front and back, It can be shared before and after.

The double pipe (3) is composed of two resin coated steel pipes (14) coated with synthetic resin such as AAS on the outer circumference of a thin steel pipe having an outer diameter of about 28 to 32 mm, and integrated with the coated resin by the same synthetic resin as each coated resin. It is combined with one set and two sets of protrusions 15 and 16 which can be engaged with each other in the longitudinal direction of the furnace, and the double pipes 3 are formed in the double protrusions 15 and 16 of the double pipe 3. The nut hole 17 penetrates in correspondence with the bolt insertion hole 11 in the state inserted in 6).

And the connection of the corner joint 2 and the double pipe 3 of the depth direction and the width direction is a latching part bent over the part of the outer periphery of the positive resin coated steel pipe 14 and 14 of the double pipe 3 ( 18, the plate nut 20 into which the shaft portion 19 is inserted into the nut hole 17 of the protrusions 1 and 16 is inserted into each of the pipe insertion cylinder portions 5 and 7, and each plate nut ( The bolt 22 inserted in the bolt insertion hole 11 into the screw hole 21 of 2) can be disassembled by screwing.

The caster 4 is made of an engineering plastic such as the corner joint 2, and has a pair of forward and fixed wheels, and a bolt insertion hole 12 suitable for the caster attachment portion 10 of the corner joint 2. Bolt 23, which is screwed together from the head), is detachably attached by other fasteners.

When the trolley base 1 of the above-described configuration is damaged when some corner joints 2, the double pipes 3, or the casters 4 are damaged, it is easy to replace and repair and the size of the trolley base 1 is changed. By changing with the double pipe 3 of the required length dimension, a change is easy.

2 is an exploded perspective view of the joint structure of the joint and the pipe of the second embodiment of the present invention. The joint structure of the joint and the pipe of this embodiment includes a resin joint 26 in which two pipe insertion cylinder portions 25 having a B-shaped pipe insertion hole 24 form a T-shape and are integrally joined together, and the pipe insertion. Of the resin joint 26 formed by injection molding an engineering plastic, such as the corner joint 2, having a connection structure with a double pipe 28 composed of two resin coated steel pipes 27 that can be inserted into the holes 24. As described below, the curved wall of the pipe inserting cylinder 25 is located in the middle of the height of the two bolt insertion holes 29 into which the bolts for fixing the double pipes 28 are inserted, and are spaced apart appropriately in the longitudinal direction. .

The double pipe 28 inserted into the pipe insertion cylinder 25 has a length equal to at least the depth (including depth) of the pipe insertion hole 24 and the bolt insertion hole 29 of the pipe insertion cylinder 25. Pipe insertion tube portion 25 so that the rod-shaped nut 31 having a trapezoidal cross section having a corresponding threaded hole 30 is caught over a portion of the outer circumference of the positive resin coated steel pipes 27 and 27 of the double pipe 28. Is inserted in the pipe insertion hole 24, and the screw 32 is inserted into the pipe insertion hole 24, and the screw 32 is inserted into the pipe insertion hole 29 so as to be detachably connected to the resin joint 26. It is.

Moreover, the nut which cooperates with the bolt 32 and fixes the double pipe 28 to the resin joint 26 is not limited to the rod-shaped nut 31 of the trapezoid shape mentioned above, for example, shown in FIG. As described above, at least a cross section having a length equal to the depth of the pipe insertion hole 24 corresponds to the bolt insertion hole 29 of the pipe insertion cylinder 25 of the hooked portion 33 having a crooked shape. 33. The plate nut 36 may be provided in the center of the plate 33 and formed of a shaft portion 35 having a screw hole 30. The plate nut 36 may be a double pipe ( The catching part 33 is caught on the outer circumference of the positive resin coated steel pipes 27 and 27 in 28), positioned on the straight wall side of the pipe inserting tube part 25, and inserted into the pipe inserting hole 24, and the screw thereof. The resin joint 26 is doubled by screwing the bolt 32 inserted into the hole 34 from the bolt insertion hole 29. The connection enables the decomposition pipe (28). In the above embodiments, the case where the pipe insertion cylinders 5, 7, 25 of the resin joints 26, 26 are integrally joined to each other in the shape of a T-shape is described. A plurality of pipe insertion cylinders may be integrally joined to each other at an angle of a male or straight type.

As described above, according to the connection structure of the first joint and the pipe of the present invention, since the screw hole to which the bolt is screwed is not directly drilled in the resin-coated steel pipe itself of the double pipe, rust occurs as in the prior art. At the same time, it is possible to insert the double pipe into the pipe insertion hole only when the plate nut is located on the straight wall side of the pipe insertion tube. Can be done correctly and correctly.

In addition, according to the connection structure of the second joint and the pipe, the screw hole to which the bolt is screwed like the connection structure of the first joint and the pipe is not directly drilled into the resin-coated steel pipe itself of the double pipe. Since no rust is generated and the bottom hole is not required and the rod and plate nut are positioned on the straight wall side of the pipe insertion tube, insertion into the pipe insertion hole is possible. The connection work is easy and accurate.

And since the bolt which fixes a double pipe was located in the middle of the height of the curved wall side of a pipe insertion cylinder part, it contributes to safety also without a bolt protruding to the outer side of a pipe insertion cylinder part.

Claims (2)

A plurality of pipe insertion cylinders having a B-shaped pipe insertion hole are integrally joined to each other at a required angle, and the stones can be interlocked with each other in the longitudinal direction integrally formed with the respective resins in the two resin coated steel pipes. The connection structure with the double pipe which is combined by a tank and can be inserted in the said pipe insertion hole, The bolt insertion hole is provided in the middle of the height of the curved wall side of the pipe insertion tube part of a resin joint, and the said bolt is inserted in the double pipe protrusion. The nut hole is provided in correspondence with the hole, and the double pipe is caught over a part of the outer circumference of the resin coated steel pipe, and the plate nut inserted into the nut hole is placed on the straight wall side of the pipe insertion tube to be inserted into the pipe insertion hole. And the bolts inserted into the plate nuts from the bolt insertion holes are screwed together. Connection structure of joint and pipe which we made It is a connection structure between a resin joint in which a plurality of pipe insertion cylinders having a B-shaped pipe insertion hole are integrally joined at a required angle, and a double pipe composed of two resin coated steel tubes that can be inserted into the pipe insertion hole. A bolt insertion hole is provided in the middle of the height of the curved wall side of the pipe insertion cylinder portion of the joint, while a double pipe is inserted into the pipe insertion hole of the pipe insertion cylinder portion, and at least a length equal to the depth of the pipe insertion hole and the bolt insertion hole. A rod or plate nut having a threaded hole corresponding to the screw hole is inserted into the straight wall side of the pipe insertion tube so as to be caught over a portion of the outer circumference of both resin coated steel pipes of the double pipe inserted into the pipe insertion hole, and the screw of the rod or plate nut It is characterized in that the bolt inserted into the hole is screwed into Connection structure of joint and pipe