JP2000005877A - Joint device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sequentially and smoothly carry out a welding operation without twisting a cap tire cable, a hose, and the like when an inner face of a rotor is welded. SOLUTION: This device comprises a housing 2 fixed to a shaft end of a rotor for carrying out inner welding, a cylindrical member 3 rotatably supported in the housing 2, and pipe joints 9, 10 which are inserted in the cylindrical member 3 and connected to a hose, a cap tire cable, and the like arranged inside/outside the rotor respectively. Thus, welding can be sequentially and smoothly carried out, and working efficiency and product equality can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for manufacturing a cylindrical body such as a pressure vessel by welding while rotating the cylindrical body.
The present invention relates to a joint device for connecting hoses and cap tire cables for supplying cutting gas, welding gas, compressed air, welding power, and the like from outside to a cylindrical body.

[0002]

2. Description of the Related Art For example, pressure vessels such as towers, vessels, digesters, nuclear reactors or ladles and converters generally form a cylindrical body by bending a thick steel plate or the like, and rotate the cylindrical body on a turning roller. It is manufactured by inner surface welding or outer surface welding (hereinafter, the cylindrical body is referred to as a rotating body).

[0003] An automatic welding machine is generally used for the inner surface welding of the rotating body as described above. When the rotating body is short, the boom is pivotally supported on a movable carriage of the automatic welding machine, and a tip end of the boom is used. , A welding head is provided, and a boom is inserted into a rotating body to perform automatic welding (for example, Japanese Utility Model Publication No. 58-328).
No. 52).

In the case where the pressure vessel or the like is a particularly large and long rotating body, a short pipe is formed by bending a thick steel plate, and a plurality of the short pipes are connected in the pipe axis direction to produce a middle pipe. And
Further, by connecting the middle pipes to each other, a long pipe, that is, a rotating body is manufactured. In this case, reinforcement is used to maintain quality and maintain roundness at the welding stage, the end face is closed with a head plate, and the inner surface welding of the butt surface is performed while rotating the rotating body many times. .

[0005]

When welding the inner surface of the rotating body as described above, a supply conductor of an electric system provided to an automatic welding machine, that is, a cap tire cable for welding and an electric signal (hereinafter referred to as a cap tire cable). These are collectively referred to as cap tire cables) or gas hoses or compressed air hoses (hereinafter collectively referred to as hoses). Must be interrupted and corrected. Therefore, not only the work efficiency is reduced, but also the quality may be reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem. In welding the inner surface of a rotating body, a welding operation is performed continuously and smoothly without twisting of cap tire cables and hoses. The purpose of the present invention is to obtain a joint device that can perform the above-described operations.

[0007]

A joint device according to the present invention comprises a housing fixed to a shaft end of a rotating body for performing inner surface welding, a cylindrical member rotatably supported in the housing, and the cylindrical member. A hose is inserted into the member, and a pipe joint to which the hoses and the cap tire cables arranged inside and outside of the rotating body are respectively connected.

In addition, the housing comprises a housing fixed to the shaft end of the rotating body for performing inner surface welding, and a double tube having an inner tube and an outer tube and rotatably supported in the housing via a bearing. A cylindrical member, a pipe joint inserted into one of the inner tube of the cylindrical member or between the inner tube and the outer tube, and connected to hoses disposed inside and outside the rotating body; and And a pipe joint which is inserted into the other between the inner pipe or the inner pipe and the outer pipe, and to which cap tire cables disposed inside and outside the rotating body are connected.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] FIG. 1 is a front view showing a part of a first embodiment of the present invention in cross section. FIG. 2 is a left side view of FIG. 3 is an AA sectional view of FIG. 1, FIG. 4 is a BB sectional view, FIG. 5 is a CC sectional view, and FIG. 6 is a DD sectional view. 1 to 6, reference numeral 1 denotes a joint device according to the present invention, which comprises an annular housing 2, a pipe joint including an inner pipe 7 and an outer pipe 8 to which hoses and cap tire cables are connected. Cylindrical member 3 composed of a double tube rotatably supported in the housing, and housing 2
And a bearing 4 provided between the cylindrical member 3 and the like.

Reference numeral 5 denotes a bracket provided at a position facing the outer periphery of the housing 2, which is directly or indirectly fixed to a shaft end of the rotating body, as described later. Reference numeral 6 denotes a hanging hand provided on the outer periphery of the housing 2, which is held by a crane or the like to ensure safety such as transportation, installation, and removal. The cylindrical member 3 is a double tube having the inner tube 7 and the outer tube 8 as described above.
, And the inner tube 7 is formed longer than the outer tube 8. As a result, concentration of hoses and cap tire cables is prevented, and attachment and detachment of the pipe joints 9 and 10 are facilitated.

A plurality of pipe joints 9 to which hoses are connected are inserted into the inner pipe 7, and partition plates 13a provided at both ends are provided.
13b. The hose fittings 9 include a hose 9a for supplying compressed air, a fitting 9b for a hose for supplying oxygen, and a fitting 9 for a hose for supplying carbon dioxide gas.
c, a pipe joint 9d for supplying propane gas and the like are installed.

A plurality of pipe joints 10 to which cap tire cables are connected are inserted and installed between the inner pipe 7 and the outer pipe 8, and an intermediate member is provided between the pipe joints 10. 16 is provided to hold each pipe joint 10 at a predetermined position and prevent deformation. Further, a lateral slip prevention member 17 is provided on the outer periphery of the inner pipe 7 so that
8, the intermediate member 16 is fixed. The pipe joints 10 of cap tire cables include pipe joints 11a, 11b, 11c, 11d of cap tire cables for welding.
Fittings 12a, 1 for cap tire cables for electric signals
2b. Reference numeral 15 denotes a protective cover that is attached to the support member 14 provided on the exposed outer periphery of the inner pipe 7 to protect the cap tire cable 10.

Next, the operation of the embodiment constructed as described above will be described with reference to FIGS. FIG. 7 shows the rotating body 2
0 is an explanatory view showing a state in which the joint device 1 according to the present invention is mounted, and 21 is a turning roller on which the rotating body 20 is placed. Reference numeral 22 denotes a cross-shaped reinforcing member attached to the shaft end opening of the rotating body 20, and the joint device 1 is fixed to the reinforcing member 22 by the bracket 5 provided on the housing 2. Reference numeral 28 denotes an automatic welding machine carried in and installed in the rotating body 20, and one end of the hose fitting 9 of the joint device 1 and one end of the cap tire cable 10 are connected to the inner hose and the cap tire. They are connected to cables 26, respectively. 27 is connected to the other end of the hose fitting 9 of the joint device 1 and the other end of the fitting 10 of the cap tire cable, and is connected to an externally provided gas source or electric power source. Tire cables.

An intermediate support 23 has a base fixed to the inner surface of the rotator 20 and a distal end thereof positioned substantially at the center of the rotator 20 to hold the inner hoses and cap tire cables 26 in a free state. When the rotating body 20 is rotated by the body to weld the inner surface of the butt surface 25 of the end plate 24 or the like, the inner hoses and the cap tire cables 26 are held in the same position and the inner surface of the rotating body 20 is projected. This is for preventing the entanglement with an object or the like, and a plurality of them may be provided as necessary.

A rotating body 2 provided with the above-described coupling device 1
No. 0 performs the inner surface welding of the butt surface 25 by the automatic welding machine 28 while rotating on the turning roller 21. In this case, when the rotating body 20 is rotated, the housing 2 fixed to the auxiliary member 22 by the bracket 5 rotates together with the rotating body 20, but the cylindrical member 3 supported in the housing 2 via the bearing 4, and the cylindrical member 3 The pipe joints 9 for hoses and the pipe joints 10 for cap tires fixed in the member 3 are held at substantially the same position in the same state.

For this reason, as shown in FIG.
Is rotated, for example, by 180 °, the automatic welding machine 28 is held in that position, and the intermediate support 23 fixed to the rotating body 20 rotates together with the rotating body 20, but both ends are connected to the joint device 1 and the automatic welding machine. 28, an inner hose and a cap tire cable 26 whose substantially middle portions are freely held by the intermediate support 23, and an outer hose and a cap whose one end is connected to the joint device 1. Since the tire cables 27 are held in their original positions as they are, inner and outer hoses, cap tire cables 26,
27 does not twist. Therefore, there is no need to interrupt the work during the welding work to correct the twists of the hoses and the cap tire cables 26 and 27, so that the welding work can be performed continuously and smoothly, and the work efficiency and product quality can be improved. Can be improved.

FIG. 9 shows that the joint device 1 according to the present invention is attached to a nozzle 29 provided at the shaft end of the rotating body 20 instead of the cross-shaped reinforcing member 22 attached to the shaft end opening of the rotating body 20. This shows an example in which a butt surface 25 at an intermediate portion in the longitudinal direction of the rotating body 20 is internally welded. In this example, the intermediate support 23 is omitted because the distance between the joint device 1 and the automatic welding machine 28 is relatively short, but the intermediate support 23 may be provided. The operation and effect of this embodiment are almost the same as those of the embodiment of FIGS.

In the above description, a pipe joint 9 to which hoses are connected is provided in the inner pipe 7 of the cylindrical member 3, and the inner pipe 7 and the outer pipe 8 are connected.
A pipe joint 10 to which cap tire cables are connected is provided between the inner pipe 7 and the outer pipe 8, and a pipe joint 9 to which hoses are connected is provided. A pipe joint 10 to which the types are connected may be provided in the inner pipe 7.

In this embodiment configured as described above, when welding the butt surface 25 in the rotating body 20 while rotating the rotating body 20, the automatic welding machine 28 and the automatic welding machine 28 and the joint device 1 To prevent the occurrence of twisting by holding the hoses and cap tire cables 26 connected between them at their positions, so that the welding operation can be performed continuously and smoothly, and the work efficiency and product Quality can be improved.

Further, since the present invention has a simple structure and no sliding portion, there is no risk of abrasion, heat generation, gas leakage, etc., and the present invention is safe. Further, when the interior member is attached to the rotating body using a cutting gas, a pneumatic tool with compressed air, a welding cap tire cable, or the like, the hoses and the cap tire cables are not entangled. These operations can be performed by several workers at the same time, and the work efficiency is improved.

[Second Embodiment] FIG. 10 is a longitudinal sectional view of a second embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. In the first embodiment, the case where the cylindrical member 3 formed of the double pipe having the inner pipe 7 and the outer pipe 8 is rotatably disposed in the housing 2 via the bearing 4 has been described. In the embodiment, the inner pipe 7 is omitted, and the cylindrical member 3 (corresponding to the outer pipe 8 of the first embodiment) is rotatably disposed in the housing 2 via the bearing 4. , 10 are provided.

That is, in FIG.
Reference numerals d, 12a, and 12b denote a plurality of pipe joints 10 to which cap tire cables and the like arranged along the inner wall of the cylindrical member 3 are connected, and an intermediate member 16 fixed to the peripheral wall of the cylindrical member 3 by a countersunk bolt 18. Thus, it is held at a predetermined position and deformation is prevented. 9a to 9d are intermediate members 16
Is a pipe joint 9 to which hoses disposed in a region surrounded by are connected. The arrangement positions of the pipe joints 9 and 10 and the structure of the intermediate member 16 can be appropriately changed. The operation and effects of this embodiment are almost the same as those of the first embodiment.

[0023]

The joint device according to the present invention has a housing fixed to the shaft end of a rotating body for performing inner surface welding, a cylindrical member rotatably supported in the housing, and a cylindrical member inserted through the cylindrical member. The hoses and cap tire cables disposed inside and outside the rotating body are provided with pipe joints to be connected to each other, and when performing the inner surface welding while rotating the rotating body, the hoses and cap tire cables described above are used. Since it is held at that position to prevent the occurrence of torsion, welding can be performed continuously and smoothly, and work efficiency and product quality can be improved.

Further, a cylinder comprising a housing fixed to a shaft end of a rotating body for performing inner surface welding, and a double tube having an inner tube and an outer tube rotatably supported in the housing via a bearing. A member, a pipe joint inserted into one of the inner pipe of the cylindrical member or between the inner pipe and the outer pipe, and connected with hoses disposed inside and outside the rotating body; and an inner pipe or an inner pipe of the cylindrical member. Since a pipe joint which is inserted into the other between the pipe and the outer pipe and is connected to cap tire cables and the like disposed inside and outside the rotating body is provided, the same effect as described above can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view of a first embodiment of the present invention, a part of which is shown in cross section.

FIG. 2 is a left side view of FIG. 1 with a part omitted.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a sectional view taken along line BB of FIG. 1;

FIG. 5 is a sectional view taken along the line CC of FIG. 1;

FIG. 6 is a sectional view taken along line DD of FIG. 1;

FIG. 7 is an explanatory view showing a state where the joint device according to the present invention is attached to a rotating body.

FIG. 8 is an operation explanatory view of FIG. 7;

FIG. 9 is an explanatory diagram of another example of FIG. 7;

FIG. 10 is a longitudinal sectional view of a main part according to the second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Joint apparatus 2 Housing 3 Cylindrical member 4 Bearing 7 Inner pipe 8 Outer pipe 9 Pipe joint of hoses 10 Pipe joint of cap tire cables 16 Intermediate member 20 Rotating body 23 Intermediate support body 26 Inner hoses, cap tire hoses 27 External hoses, cap tire hoses 28 Automatic welding machine

Continuing from the front page (72) Inventor Riki Onodera 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Inventor Tsutomu Ogita 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Stock In-house (72) Inventor Shinichi Okuyama 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Inventor Tsutomu Fukushi 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. F-term (reference) 3H104 JA04 JB09 JC10 JD09 KB18 LE01 4E081 AA12 EA37

Claims (2)

[Claims] 1. A housing fixed to a shaft end of a rotating body for performing inner surface welding, a cylindrical member rotatably supported in the housing, and disposed inside and outside the rotating body inserted into the cylindrical member. A joint device comprising: a pipe joint to which the installed hoses and cap tire cables are connected. 2. A housing fixed to a shaft end of a rotating body for performing inner surface welding, and a double tube having an inner tube and an outer tube and rotatably supported in the housing via a bearing. A cylindrical member, a pipe joint inserted into one of the inner tube of the cylindrical member or between the inner tube and the outer tube, and connected to hoses disposed inside and outside the rotating body; and A joint device comprising: an inner tube or a tube joint inserted into the other between the inner tube and the outer tube and connected to cap tire cables disposed inside and outside the rotating body.