WO2017078232A1

WO2017078232A1 - Fixing apparatus for pipe welding

Info

Publication number: WO2017078232A1
Application number: PCT/KR2016/004491
Authority: WO
Inventors: 김용근
Original assignee: (주)성광
Priority date: 2015-11-05
Filing date: 2016-04-29
Publication date: 2017-05-11

Abstract

The present invention relates to a fixing apparatus for pipe welding and, more specifically, to a fixing apparatus, for pipe welding, enabling easy aligning and welding of welding parts when welding an elbow and a straight pipe. A fixing apparatus for pipe welding, according to the present invention, comprises an angle adjusting means, a vertical fixing means and a moving means. The angle adjusting means enables adjustment of the angle of an elbow by means of mounting the elbow such that the central axis of one end of the elbow and the central axis of a straight pipe in a horizontal state are aligned. The vertical fixing means enables the elbow to be set vertically by means of supporting both lateral sides of the elbow mounted on the angle adjusting means. The moving means comprises a first horizontal movement unit, a second horizontal movement unit and a vertical movement unit. The first horizontal movement unit is for moving the elbow forward to and backward from the straight pipe such that one end of the elbow comes into contact with one end of the straight pipe. The second horizontal movement unit is for moving the elbow left and right such that one end of the elbow comes into contact with one end of the straight pipe. The vertical movement unit is for moving the elbow vertically such that one end of the elbow comes into contact with one end of the straight pipe. The present invention enables easy setting of the concentricity of an elbow and a straight pipe by means of mounting the elbow on the angle adjusting means and adjusting the angle of the elbow. Moreover, the present invention enables easy setting of the perpendicularity of the other end part of the elbow and one end part of the straight pipe by vertically setting and fixing the elbow by means of the vertical fixing means.

Description

Fixtures for pipe welding

The present invention relates to a pipe welding fixture, and more particularly, to a pipe welding fixture that can be easily welded to match the weld when welding elbows and straight pipes.

Numerous pipes, such as drums, headers, tubes, etc., enter the boiler for power generation facilities. In order to connect the pipes, the fittings are welded. However, non-planar tubes are not easy to align and fix to end.

In particular, in pipe welding, alignment and fixing in the process of welding various types of pipe fittings, such as elbows, tees, caps, and the like to pipe pipes, are more difficult.

Accordingly, the tack welding, which is the primary available welding, is performed at various intervals at predetermined intervals to ensure accurate welding. In the case of aligning and welding the ends of both pipes by hand, the working time is performed. And there was a problem that the workforce increases.

Registered Patent No. 10-1218791 (Registration date December 28, 2012)

Patent Publication No. 10-2013-0123777 (published November 13, 2013)

Public utility model No. 20-2014-0005826 (published November 18, 2014)

The present invention is to solve the above problems. An object of the present invention is to provide a fixing device for pipe welding that can be easily matched and welded when welding the elbow and the straight pipe.

The pipe welding fixture according to the present invention includes an angle adjusting means, a vertical fixing means and a moving means. The angle adjusting means may adjust the angle of the elbow through the elbow so that the central axis of one end of the elbow and the central axis of the straight pipe in a horizontal state coincide with each other. The vertical fixing means may support both sides of the elbow mounted on the angle adjusting means to vertically set the elbow. The moving means includes a first horizontal moving part, a second horizontal moving part, and a shanghai east part. The first horizontal moving part moves the elbow back and forth toward the straight pipe such that one end of the elbow contacts one end of the straight pipe. The second horizontal moving part moves the elbow in left and right directions so that one end of the elbow contacts one end of the straight pipe. The shanghai east portion moves the elbow up and down so that one end of the elbow contacts one end of the straight pipe.

Further, in the above pipe welding fixture, the vertical fixing means preferably comprises a fixed block and a moving block. The fixing block supports one side of the elbow. The movable block moves forward and backward toward the fixed block so as to press and support the other side of the elbow.

Further, in the pipe welding fixture, it is preferable that the fixing block and the movable block are formed with a plurality of insertion holes on one surface in contact with and support the both sides of the elbow, the vertical fixing means of the elbow It is preferable to further include a support bolt inserted into the insertion hole so as to press the both sides to fix the elbow.

In the above pipe welding fixture, the angle adjusting means preferably includes a fixing plate, a mounting plate, and an angle adjusting bar. The fixed plate is mounted to the moving means. The mounting plate has one end hinged to one end of the fixing plate to mount the elbow. The angle adjusting bar has one end coupled to the mounting plate and the other end coupled to the fixed plate to adjust the angle between the mounting plate and the fixed plate.

Further, in the above pipe welding fixture, it is preferable that the angle adjustment bar is adjusted in length.

Or, in the pipe welding fixture, either one surface of the fixing plate or one surface of the mounting plate is hinged to the angle adjustment bar, the other side is the angle adjustment bar is inserted and sliding so as to adjust the angle. It is preferable that an angle adjusting groove is formed.

According to the present invention, by adjusting the angle of the elbow by mounting the elbow to the angle adjusting means, it is possible to easily match the concentricity of the elbow and the straight pipe.

In addition, according to the present invention, by elevating the elbow vertically by the vertical fixing means, it is possible to easily match the right angle of the other end of the elbow and one end of the straight pipe.

1 is a perspective view of an embodiment of a fixing device for pipe welding according to the present invention;

2 is a perspective view of an embodiment of the angle adjusting means shown in FIG.

3 is a perspective view of an embodiment of the vertical fastening means shown in FIG.

Figure 4 is a perspective view of another embodiment of the angle adjusting means of the fixing device for pipe welding according to the present invention.

1: Elbow 2: Once

3: one side 4: other side

5: straight pipe 6: once

10: angle adjusting means 11: fixed plate

12: one side 13: angle adjustment groove

15: mounting plate 16: one side

17: angle adjustment bar 18: once

19: other end 20: vertical fixing means

21: fixed block 22: one side

23: insertion hole 25: moving block

26: one side 27: insertion hole

29: support bolt 30: moving means

31: first horizontal moving part 32: front and rear direction

33: second horizontal moving part 34: left and right direction

35: east of Shanghai 36: up and down

An embodiment of a fixing device for pipe welding according to the present invention will be described with reference to FIGS. 1 to 3.

The pipe welding fixture according to the present invention includes an angle adjusting means 10, a vertical fixing means 20, and a moving means 30.

The angle adjusting means 10 serves to make the central axis a of one end 2 of the elbow 1 coincide with the central axis c of the straight pipe 5 in a horizontal state. To this end, the angle adjusting means 10 includes a fixed plate 11, a mounting plate 15, and an angle adjusting bar 17. The fixed plate 11 is mounted to the moving means 30. The mounting plate 15 is hinged to one end of the fixing plate 11 to mount the elbow (1). Angle adjustment bar 17 is one end 18 is coupled to the mounting plate 15 and the other end 19 is coupled to the fixed plate 11, the length is adjusted. That is, the angle between the fixed plate 11 and the mounting plate 15 can be adjusted by adjusting the length of the angle adjustment bar 17. By adjusting the length of the angle adjustment bar 17, the central axis a of one end 2 of the elbow 1 mounted on the mounting plate 15 and the central axis c of the straight pipe 5 in a horizontal state. Match concentricity. Then, the central axis a of one end 2 of the elbow 1 and the central axis b of the other end of the elbow 1 are aligned at right angles.

The vertical fixing means 20 supports both sides of the elbow 1 mounted on the angle adjusting means 10 to serve to vertically fix the elbow 1, and for this purpose, the fixing block 21 and the moving block. 25 and a support bolt 29 are provided. The fixed block 21 supports one side 3 of the elbow 1, and a plurality of insertion holes 23 are formed in one surface 22 supporting the one side 3 of the elbow 1, and a moving means. 30 is mounted. The movable block 25 moves in the front-rear direction 28 toward the fixed block 21 so as to pressurize and support the other side 4 of the elbow 1 and move the other side 4 of the elbow 1. A plurality of insertion holes 27 are formed in one surface 26 to support and are mounted to the moving means 30. That is, when one side 3 of the elbow 1 mounted on the mounting plate 15 is supported by the stationary block 21, the movable block 5 is moved in the direction of arrow A toward the stationary block 21 to elbow ( Press and support the other side 4 of 1). Then, the elbow 1 supported by both sides by the fixing block 21 and the moving block 25 is vertically fixed. The support bolt 29 is inserted into the insertion hole 23 formed in one surface 22 of the fixed block 21 and the insertion hole 27 formed in one surface 26 of the movable block 25 so that both sides of the elbow 1 are supported. Press to fix it. In the case of the elbow 1, in principle, the elbow 1 should be in line contact with the fixed block 21 or the movable block 25. However, due to the processing error of the elbow maker, it is difficult to accurately process the inner, outer diameter and curvature of the elbow (1) and in reality the elbow 1 and the fixed block 21 or the moving block 25 is in point contact. In this case, the elbow 1 is not firmly supported by the fixed block 21 or the moving block 25 and is shaken. In order to prevent this, the support bolt 29 is inserted into the fixing hole 21 or the movable block 25 so that the support hole 29 is formed on one surface 22 of the fixed block 21 and the movable block ( It is inserted into the insertion hole 27 formed in one surface 26 of 25. Then, the support bolts 29 inserted into the insertion hole 23 of the fixing block 21 and the insertion hole 27 of the moving block 25 are pressed and fixed so as not to shake in contact with both sides of the elbow 1.

The moving means 30 serves to move the elbow 1 in the front-rear direction 32, the left-right direction 34 and the vertical direction 36. To this end, the moving means 30 includes a first horizontal moving part 31, a second horizontal moving part 33, and a shanghai east part 35. The first horizontal moving part 31 moves the elbow 1 in the front-rear direction 32 toward the straight pipe 5 such that one end 2 of the elbow 1 contacts the one end 6 of the straight pipe 5. Move it. The second horizontal moving part 33 moves the elbow 1 in the left and right directions 34 such that one end 2 of the elbow 1 contacts the one end 6 of the straight pipe 5. The shanghai eastern part 35 moves the elbow 1 in the up-and-down direction 36 so that one end 2 of the elbow 1 contacts the one end 6 of the straight pipe 5.

In the conventional case, particularly for heavy elbows, the operator manually adjusted the concentricity and the squareness of the elbows and straight pipes using a overhead crane and other equipment. As a result, the utilization of the ceiling crane is reduced, there is a limit in the working time and workable manpower, there is a problem such as productivity decrease. However, in the present embodiment, the elbow 1 is mounted on the mounting plate 15, and then the length of the angle adjusting bar 17 is adjusted to adjust the angle of the elbow 1 so that one end of the elbow 1 is more easily (2). The central axis (a) of) and the central axis (c) of the straight pipe (5) in the horizontal state can coincide, and the central axis (a) of the one end (2) of the elbow (1) and the elbow (1) The central axis (b) of the other end may form a right angle state. In addition, by moving the moving block 25 in the direction of the arrow A toward the elbow 1 supported by one side 22 on the fixed block 21 to press and support the other side 4 of the elbow 1 to elbow. (1) can be fixed upright. The elbow 1, which is erected vertically by the fixed block 21 and the movable block 25, can be easily fitted at a right angle with the straight pipe 5, and the support bolt 29 is inserted into the fixed block 21. When it is inserted into and fixed in the insertion hole 27 of the hole 23 and the moving block 25, it can be stably fixed. When the elbow 1 is fixed by the vertical fixing means 20, the moving means 30 is used to move the one end 6 of the straight pipe 5 to the one end 2 of the elbow 1.

4 is another embodiment of a fixing device for pipe welding according to the present invention. Another embodiment of a fixing device for pipe welding according to the present invention will be described with reference to FIG. 4.

In the embodiment shown in FIG. 4, unlike the embodiment shown in FIG. 2, the angle adjusting groove 13 may be inserted into one surface 12 of the fixing plate 11 so that the other end 19 of the angle adjusting bar 17 may be inserted. Is formed. The angle adjusting bar 17 has one end 18 hinged to one surface 16 of the mounting plate 15 and the other end 19 is inserted into the angle adjusting groove 13 to be slid and fixed. That is, the angle adjusting bar 17 may slide along the angle adjusting groove 13 into which the other end 19 of the angle adjusting bar 17 is inserted to adjust the angle formed by the fixing plate 11 and the mounting plate 15. . The remaining components are the same as in the embodiment shown in Figure 1, so a detailed description thereof will be omitted.

In the present embodiment, since the other end 19 of the angle adjusting bar 17 can be slid or fixed along the angle adjusting groove 13, fine adjustment is possible according to the size of the elbow 1, so that the alignment operation is more precise. And can be fixed.

In this embodiment, the angle adjusting groove 13 is formed on one surface 12 of the fixing plate 11, but may be formed on one surface 16 of the mounting plate 15. In this case, the angle adjusting bar 17 has one end 18 hinged to one surface 12 of the fixed plate 11 and the other end 19 of the angle adjusting groove 13 formed on one surface 16 of the mounting plate 15. ) Is slidably inserted.

Claims

Angle adjusting means for adjusting the angle of the elbow by mounting the elbow so that the central axis of one end of the elbow coincides with the central axis of the straight pipe in a horizontal state;

Vertical fixing means for supporting both side surfaces of the elbow mounted on the angle adjusting means to erect the elbow vertically;

A first horizontal moving part for moving the elbow back and forth toward the straight pipe so that one end of the elbow contacts one end of the straight pipe, and the elbow is left and right such that one end of the elbow contacts one end of the straight pipe; And a moving means having a second horizontal moving part moving in the direction and a moving east part moving up and down the elbow so that one end of the elbow contacts one end of the straight pipe. .
The method of claim 1, wherein the vertical fixing means

A fixed block supporting one side of the elbow,

And a moving block moving forward and backward toward the fixed block so as to pressurize and support the other side of the elbow.
The method of claim 2,

The fixed block and the movable block is formed with a plurality of insertion holes in one surface in contact with the support of both sides of the elbow,

The vertical fixing means further comprises a support bolt inserted into the insertion hole so as to press the both sides of the elbow to fix the elbow.
The method of claim 3, wherein the angle adjusting means

A fixed plate mounted to the moving means,

A mounting plate having one end hinged to one end of the fixing plate to mount the elbow,

One end is coupled to the mounting plate and the other end is coupled to the fixing plate is provided with an angle adjusting bar for adjusting the angle formed by the mounting plate and the fixing plate.
The method of claim 4, wherein

The angle adjusting bar is fixed to the pipe welding, characterized in that the length is adjusted.
The method of claim 4, wherein

One side of the fixing plate or one surface of the mounting plate is hinged to the angle adjustment bar, the other side is characterized in that the angle adjustment bar is inserted to slide the angle adjustment bar is formed so as to adjust the angle is formed. Fixture for pipe welding.