CN116713663A - Rotary device, bifurcated pipe welding equipment and bifurcated pipe welding method - Google Patents

Abstract

The invention relates to a turning device, a bifurcated pipe welding device and a bifurcated pipe welding method. A turning device comprises at least two first fulcrums, at least two second fulcrums and at least two third fulcrums, wherein the first fulcrums form a first turning center line, the second fulcrums form a second turning center line, and the third fulcrums form a third turning center line. By arranging the turning device with at least two first fulcrums, at least two second fulcrums and at least two third fulcrums, and enabling the first fulcrums to form a first turning center line, the second fulcrums to form a second turning center line and the third fulcrums to form a third turning center line, the whole bifurcated pipe can rotate around the first turning center line, and further the welding seam related to the main pipe can rotate around the first turning center line, the second turning center line or the third turning center line, so that the welding device can weld the welding seam related to the main pipe and the two branch pipes which correspondingly rotate; compared with manual welding, the welding efficiency is higher, and the manual strength is low.

Description

Rotary device, bifurcated pipe welding equipment and bifurcated pipe welding method

Technical Field

The invention relates to a welding construction method of a branch pipe, in particular to a turning device, branch pipe welding equipment and a branch pipe welding method.

Background

The branch pipe comprises a main pipe and two branch pipes, wherein the main pipe and the two branch pipes are aligned by adopting an annular pipe joint formed by welding and are formed by welding annular welding seams, and then the main pipe is welded with an arc welding seam between the two branch pipes and an arc welding seam between the two branch pipes respectively to form the branch pipe. The existing manufacturing process of the bifurcated pipe mainly adopts splice welding, and has the defects of high welding labor intensity and low welding efficiency.

Disclosure of Invention

The invention aims at: aiming at the problems of high manual strength and low welding efficiency in the welding of the bifurcated pipes in the prior art, the invention provides a turning device, bifurcated pipe welding equipment and bifurcated pipe welding method.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

a turning device comprises at least two first supporting points, at least two second supporting points and at least two third supporting points, wherein the first supporting points form a first turning center line, the second supporting points form a second turning center line, and the third supporting points form a third turning center line.

The main pipe and the two branch pipes of the bifurcated pipe can be arranged on the rotary device by arranging the rotary device with at least two first fulcrums, at least two second fulcrums and at least two third fulcrums, and the first fulcrums form a first rotary center line, the second fulcrums form a second rotary center line and the third fulcrums form a third rotary center line, so that the axes of the main pipe and the two branch pipes coincide with the first rotary center line, the second rotary center line and the third rotary center line, namely the bifurcated pipe can integrally rotate around the first rotary center line, and further the welding seam related to the main pipe can rotate around the first rotary center line, so that a welding worker or a welding device can weld the welding seam related to the rotating main pipe; it can be seen that the bifurcated pipe can be integrally rotated around the second rotation center line or the third rotation center line, so that the related welding seams of the two branch pipes can be rotated around the corresponding rotation center lines, the welding device can weld the related welding seams of the rotating branch pipes, and compared with manual welding, the bifurcated pipe welding device is higher in welding efficiency and low in manual strength.

Preferably, the horizontal projection of the second revolution center line, the horizontal projection of the third revolution center line and the horizontal projection of the first revolution center line intersect, and the horizontal projection of the second revolution center line and the horizontal projection of the third revolution center line are symmetrical with respect to the horizontal projection of the first revolution center line; the first rotary center line of the rotary device corresponds to the main pipe center line of the branch pipe, the second rotary center line and the third rotary center line respectively correspond to the center lines of the two branch pipes of the branch pipe, and the whole branch pipe can rotate around the center line of the main pipe or the branch pipe, so that welding is more convenient and rapid.

Preferably, the turning device comprises a first bracket and a second bracket, the first bracket and the second bracket are arranged at intervals along the transverse direction of the turning device, the first bracket and the second bracket are correspondingly provided with the first pivot, the second pivot and/or the third pivot, and at least one of the first bracket and the second bracket is provided with radial support related to the first turning center line, the second turning center line and/or the third turning center line.

Preferably, the first support and the second support are arranged oppositely, the first support is provided with radial supports about the first rotation center line, the first supporting point is positioned in the middle of the first support, and the second supporting point and the third supporting point are positioned at two sides of the first supporting point;

The second support comprises a connecting part located in the middle, and a first sub-support and a second sub-support located on two sides, wherein the first sub-support is provided with radial support relative to a third rotation center line, the second sub-support is provided with radial support relative to a second rotation center line, the first sub-support and the second sub-support are connected through the connecting part, the connecting part is provided with a first supporting point, and the first sub-support and the second sub-support are correspondingly provided with a third supporting point and a second supporting point.

By adopting the turning device, the turning device is simple in structure, the first turning center line, the second turning center line and the third turning center line can be simultaneously arranged, the turning device is compact in arrangement, the branch pipe can be better installed, and welding of a welding seam of the branch pipe is facilitated.

Preferably, the first bracket comprises a plurality of first supports and first keels which are arranged along the radial direction of the first rotation center line, one ends of all the first supports are converged on the first rotation center line to form a rice-shaped structure or an asterisk structure, one ends of the first keels are connected to one ends, away from the first rotation center line, of the corresponding first supports, the other ends of the first keels are converged on the first rotation center line, and the first fulcrums are arranged, and are positioned on one side, away from the second bracket, of the first supports;

The first sub-support comprises a plurality of third supports and third keels which are arranged along the radial direction of the third rotation center line, one ends of all the third supports are converged on the third rotation center line to form a cross structure, one ends of the third keels are connected to one ends, far away from the third rotation center line, of the corresponding third supports, the other ends of the third keels are converged on the third rotation center line and are provided with third fulcrums, and the third fulcrums are positioned on one side, far away from the first support, of the third supports;

the second sub-support comprises a plurality of second supports and second keels which are arranged along the radial direction of the second rotation center line, one ends of all the second supports are converged on the second rotation center line to form a cross structure, one ends of the second keels are connected to one ends, which correspond to the second supports, of the second supports, the other ends of the second keels are converged on the second rotation center line and are provided with second fulcrums, and the second fulcrums are positioned on one sides, which are far away from the first support, of the second supports.

The slewing device adopts a keel matched and supported form, has stable structure and can ensure the stability of the bifurcated pipe when the bifurcated pipe integrally rotates. The first support corresponds to the main pipe of the branch pipe, the first sub-support and the second sub-support correspond to the two branch pipes of the branch pipe, and the diameter of the main pipe is generally larger than that of the branch pipes, so that one end of the first support is converged on the first rotation center line to form a rice-shaped structure or an asterisk-shaped structure.

Preferably, the first rotation center line coincides with the main pipe axis of the branch pipe; the second rotation center line coincides with the axis of the first branch pipe of the branch pipe; the third rotation center line coincides with the axis of the second branch pipe of the branch pipe.

The bifurcated pipe welding equipment comprises a turning device and a driving mechanism, wherein a rotating shaft of the driving mechanism is used for connecting a first supporting point, a second supporting point or a third supporting point of the turning device.

According to the bifurcated pipe welding equipment, the bifurcated pipe is integrally erected by adopting the rotating device, so that the axes of the main pipe and the two branch pipes are overlapped with the first rotating center line, the second rotating center line and the third rotating center line, namely, the bifurcated pipe is integrally rotated around the first rotating center line by connecting the rotating shaft of the driving mechanism with the first supporting point, and then the welding seam related to the main pipe is rotated around the first rotating center line, so that the welding device can weld the welding seam related to the rotating main pipe; it can be seen from the same principle that the second pivot or the third pivot can be connected to the rotating shaft of the driving mechanism, so that the bifurcated pipe integrally rotates around the second rotation center line or the third rotation center line, and further, the related welding seams of the two branch pipes can rotate around the corresponding rotation center lines, so that the welding device can weld the related welding seams of the rotating branch pipes, and compared with manual welding, the welding efficiency is higher, and the manual strength is low.

Preferably, the turning device comprises two first fulcrums, two second fulcrums and two third fulcrums, two driving mechanisms are arranged, and rotating shafts of the two driving mechanisms are used for connecting the two first fulcrums, the two second fulcrums or the two third fulcrums.

The two first fulcrums, the two second fulcrums or the two third fulcrums are connected by adopting the rotating shafts of the two driving mechanisms, the equal rotating shaft force is applied, and the burden of a single driving mechanism can be reduced under the condition that the required rotating shaft force is constant.

Preferably, the driving mechanism includes a fixing portion, a lifting portion and a rotating portion, the lifting portion is fixed on the fixing portion, the lifting portion can drive the rotating portion to lift, and the rotating portion is provided with the rotating shaft.

The lifting part can lift and lower the slewing device, so that the bifurcated pipe is convenient to integrally mount on the slewing device.

Preferably, the horizontal rotating device comprises a supporting disc and a rotating bracket positioned right above the supporting disc, and the rotating bracket can rotate on the supporting disc.

By lowering the height of the turning device, the whole branch pipe can be towed when the whole branch pipe is installed on the turning device, so that the branch pipe is installed. And in the welding operation process of the fork tube, the rotating shaft of the driving mechanism is connected with one of the fulcrums, after the rotary welding of the corresponding rotation center line is realized, the rotation device and the fork tube can be integrally arranged on the rotation bracket through the downward rotation of the rotation device and the fork tube, and the rotation bracket can rotate on the support plate to drive the rotation device and the fork tube to integrally rotate, so that other fulcrums can be rotated to be aligned and connected with the rotating shaft of the driving mechanism, and the corresponding rotary welding of other rotation center lines can be conveniently carried out. In this way, there is no need to provide more drive mechanisms, nor to move the position of the drive mechanisms.

Preferably, a track is included along which the support disc is movable, facilitating adjustment of the position of the support disc for use of the support disc and reducing interference with welding when the support disc is not in use.

Preferably, the top of the track and the bottom of the supporting disc are in sliding connection through a guide rail pair, and only one end of the track is provided with a limiting structure which can limit the horizontal rotating device to pass through.

The rail top with the bottom of supporting disk adopts guide rail pair sliding connection, and the direction is accurate, and the slip is stable, and is convenient for fix. One end of the rail is provided with a limit structure, and one end of the rail, which is not provided with the limit structure, is convenient for installing the support disc on the top of the rail, so that a guide rail pair structure is formed; one end provided with a limiting structure is used as the moving tail end of the supporting disc, so that the supporting disc is prevented from sliding out.

Preferably, the bifurcated pipe welding equipment further comprises a welding device, and the welding device is a welding robot or an automatic welding special machine and can realize automatic welding.

A bifurcated pipe welding method adopts bifurcated pipe welding equipment to weld a bifurcated pipe weld joint, and comprises the following steps:

s1, spot welding a welding line of a branch pipe to form a whole branch pipe and supporting the whole branch pipe on a rotary device, so that a main pipe axis of the branch pipe coincides with a first rotary center line, a first branch pipe axis of the branch pipe coincides with a second rotary center line, and a second branch pipe axis of the branch pipe coincides with a third rotary center line;

S2, the whole bifurcated pipe rotates along a first rotation center line, and a first circumferential weld joint of the main pipe is welded through a welding device; the whole branch pipe rotates along a second rotation center line, and a second circumferential weld joint of the first branch pipe is welded through a welding device; the whole branch pipe rotates along the third rotation center line, and a third circumferential weld joint of the second branch pipe is welded through a welding device.

By adopting the bifurcated pipe welding method, the welded seam of the bifurcated pipe is subjected to spot welding to form the bifurcated pipe as a whole, so that the bifurcated pipe can integrally rotate around the rotating center line; the first annular welding seam of the main pipe can be welded quickly through the welding device by rotating the bifurcated pipe along the first rotation center line; the bifurcated pipe rotates along a second rotation center line, and a second circumferential weld joint of the first branch pipe can be welded rapidly through a welding device; the third circumferential weld joint of the second branch pipe can be welded quickly through the welding device by rotating the branch pipe along the third rotation center line, so that the welding speed of the circumferential weld joint of the main pipe and the branch pipe of the branch pipe can be increased, and the labor intensity of workers is reduced.

Preferably, in step S2, the welding method further comprises welding a first arc-shaped welding seam between the main pipe and the first branch pipe, a second arc-shaped welding seam between the main pipe and the second branch pipe, and a third arc-shaped welding seam between the first branch pipe and the second branch pipe;

The whole bifurcated pipe rotates along a first rotation center line or rotates along a second rotation center line, and a first arc welding seam is welded through a welding device; the whole bifurcated pipe rotates along the first rotation center line or rotates along the third rotation center line, and a second arc welding seam is welded through a welding device; the whole branch pipe rotates along the second rotation center line or rotates along the third rotation center line, and a third arc welding seam is welded through a welding device.

By adopting the mode, the welding device can automatically weld the first arc-shaped welding seam between the main pipe and the first branch pipe, the second arc-shaped welding seam between the main pipe and the second branch pipe and the third arc-shaped welding seam between the first branch pipe and the second branch pipe, so that the welding speed of the branch pipe can be further improved, and the labor intensity of workers can be reduced.

Preferably, the step S2 includes the steps of:

s21, controlling the whole bifurcated pipe to rotate along any one of a first rotation center line, a second rotation center line and a third rotation center line through the driving mechanism, and welding corresponding welding seams through a welding device;

s22, stopping the rotation of the branch pipe along the current rotation center line, removing the connection between the driving mechanism and the rotation device, and horizontally rotating the branch pipe to enable the other rotation center line to rotate to be aligned with the driving mechanism and form connection;

S23, controlling the whole bifurcated pipe to rotate along the current rotation center line through the driving mechanism, and welding corresponding welding seams through a welding device;

s24, repeating the steps S22 and S23 until the welding of the welding seam of the branch pipe to be welded is completed.

By adopting the mode, the number of welding equipment can be reduced, the welding equipment is prevented from moving, the working procedures can be reduced, the overall processing speed of the branch pipe is further improved, and the labor intensity is reduced.

In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:

1. according to the slewing device, the slewing device with at least two first fulcrums, at least two second fulcrums and at least two third fulcrums is arranged, the first fulcrums form a first slewing center line, the second fulcrums form a second slewing center line and the third fulcrums form a third slewing center line, so that the whole bifurcated pipe can rotate around the first slewing center line, and further, a welding seam related to a main pipe can rotate around the first slewing center line, and the welding device can weld the welding seam related to the rotating main pipe; the forked pipe can also integrally rotate around the second rotation center line or the third rotation center line, so that the related welding seams of the two branch pipes can rotate around the corresponding rotation center lines, the welding device can weld the related welding seams of the rotating branch pipes, and compared with manual welding, the welding efficiency is higher, and the manual strength is low.

2. According to the bifurcated pipe welding equipment, the bifurcated pipe is integrally erected by adopting the rotating device, so that the axes of the main pipe and the two branch pipes are overlapped with the first rotating center line, the second rotating center line and the third rotating center line, namely, the bifurcated pipe is integrally rotated around the first rotating center line by connecting the rotating shaft of the driving mechanism with the first supporting point, and then the welding seam related to the main pipe is rotated around the first rotating center line, so that the welding device can weld the welding seam related to the rotated main pipe; the rotating shaft of the driving mechanism can be connected with the second pivot or the third pivot, so that the bifurcated pipe integrally rotates around the second rotation center line or the third rotation center line, and further the related welding seams of the two branch pipes can rotate around the corresponding rotation center lines, so that the welding device can weld the related welding seams of the rotating branch pipes, and compared with manual welding, the welding efficiency is higher, and the manual strength is low.

3. The bifurcated pipe welding method can improve the welding speed of circumferential weld joints of the main pipe and the branch pipe of the bifurcated pipe and reduce the labor intensity; the welding device can also automatically weld the first arc-shaped welding seam between the main pipe and the first branch pipe, the second arc-shaped welding seam between the main pipe and the second branch pipe and the third arc-shaped welding seam between the first branch pipe and the second branch pipe, so that the welding speed of the branch pipe can be further improved, and the labor intensity of workers can be reduced.

Drawings

FIG. 1 is a schematic view of the structure of the slewing device in example 1;

FIG. 2 is a schematic top view of the slewing device in example 1;

FIG. 3 is a schematic view of the bifurcated pipe welding apparatus described in example 2;

FIG. 4 is a schematic front view of the bifurcated pipe welding apparatus described in example 2;

FIG. 5 is a schematic side view of the bifurcated pipe welding apparatus described in example 2;

FIG. 6 is a schematic top view of the bifurcated pipe welding apparatus described in example 2;

FIG. 7 is a schematic structural diagram of a method for welding a main pipe by using a bifurcated pipe welding device according to the present invention;

FIG. 8 is a schematic front view of a method for welding a main pipe using a pipe-branching welding apparatus according to the present invention;

FIG. 9 is a schematic left side view of a welding seam related to a main pipe welded by using a bifurcated pipe welding device according to the bifurcated pipe welding method of the present invention;

FIG. 10 is a right side view of a pipe-in-pipe welding method of the present invention using a pipe-in-pipe welding apparatus to weld a pipe-in-pipe-related weld;

FIG. 11 is a schematic layout of a welding apparatus;

fig. 12 is a side view schematic of an arrangement of a welding device.

Icon: 1-a first bracket; 11-a first fulcrum; 12-a second fulcrum; 13-a third fulcrum; 101-a first support; 102-a first keel; 2-a second bracket; 21-a connection; 22-a second sub-mount; 221-a second support; 222-a second keel; 23-a first sub-mount; 231-a third support; 232-third keel; 3-a driving mechanism; 31-a fixing part; 32-a lifting part; 33-a rotating part; 331-a rotating shaft; 34-a first rotary motor; 4-a horizontal rotation device; 41-a support plate; 42-rotating the bracket; 421-first wedge; 422-second wedge; 423-a first guide slot; 424-second guide slots; 43-a second rotary motor; 5-track; 51-a limiting structure; 6-branch pipes; 61-a main pipe; 611-a first circumferential weld; 62-a first branch; 621-a second circumferential weld; 63-a second branch; 631-a third circumferential weld; 612—a first arc weld; 613-a second arcuate weld; 623-a third arcuate weld; 71-a first centre line of revolution; 72-a second revolution centerline; 73-a third revolution centerline; 8-a welding device; 81-a guide rail seat; 82-guide rail.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Example 1

The present embodiment provides a turning device, see fig. 1-2, comprising at least two first fulcra 11, at least two second fulcra 12 and at least two third fulcra 13, the first fulcra 11 forming a first turning center line 71, the second fulcra 12 forming a second turning center line 72, the third fulcra 13 forming a third turning center line 73.

The pivot points according to the present embodiment are the first pivot point 11, the second pivot point 12, and the third pivot point 13, and the revolution center lines according to the present embodiment are the first revolution center line 71, the second revolution center line 72, and the third revolution center line 73, and the first revolution center line 71 is supported by at least two first pivot points 11, the second revolution center line 72 is supported by at least two second revolution center lines 72, and the third revolution center line 73 is supported by at least two third revolution center lines 73, as shown in fig. 2. The branch pipe 6 according to the present embodiment includes a main pipe 61 and two branch pipes, as shown in fig. 7, a first branch pipe 62 and a second branch pipe 63, respectively.

The fulcrum according to the present embodiment is a structure that can be used for supporting, such as a sleeve or a shaft hole to which a rotating shaft can be connected, as shown in fig. 1. Of course, the first fulcrum 11, the second fulcrum 12, and the third fulcrum 13 may have a structure similar to a roller frame, so that it is ensured that the main pipe 61 or the branch pipe of the branch pipe 6 is axially located on the corresponding rotation center line after the branch pipe 6 is supported by the roller frame.

The first rotation center line 71 is coincident with the axis of the main pipe 61 of the branch pipe 6, that is, after the branch pipe 6 is installed on the rotation device, the branch pipe can rotate around the first rotation center line 71 formed by the first pivot 11, that is, one axis of the main pipe 61 rotates, and the axis is preferably the central axis of the main pipe 61; the second rotation center line 72 coincides with the axis of the first branch pipe 62 of the branch pipe 6, and is similar to the first rotation center line 71, and rotates along one axis of the first branch pipe 62; the third rotation center line 73 coincides with the axis of the second branch pipe 63 of the branch pipe 6, and is rotated by one of the axes of the second branch pipe 63, similarly to the first rotation center line 71.

In this embodiment, the horizontal projection of the second rotation center line 72, the horizontal projection of the third rotation center line 73 and the horizontal projection of the first rotation center line 71 are intersected, and the horizontal projection of the second rotation center line 72 and the horizontal projection of the third rotation center line 73 are symmetrical with respect to the horizontal projection of the first rotation center line 71, so that the first rotation center line 71 of the rotation device corresponds to the central axis of the main pipe 61 of the branch pipe 6, and the second rotation center line 72 and the third rotation center line 73 respectively correspond to the central axes of the first branch pipe 62 and the second branch pipe 63 of the branch pipe 6, so that the whole branch pipe 6 can rotate around the central axis of the main pipe 61 or the branch pipe, and the welding is more convenient and quick.

In this embodiment, the turning device includes a first bracket 1 and a second bracket 2, where the first bracket 1 and the second bracket 2 are disposed at intervals along a lateral direction of the turning device, i.e., a left-right direction of fig. 2. The first support 1 and the second support 2 are correspondingly provided with the first supporting point 11, the second supporting point 12 and/or the third supporting point 13, that is, the first support 1 is provided with the first supporting point 11, and the second support 2 is correspondingly provided with the first supporting point 11, so that a first rotation center line 71 can be formed, and after the branch pipe 6 is installed, the first rotation center line 71 corresponds to the central axis of the main pipe 61 of the branch pipe 6; correspondingly, the first bracket 1 is provided with a second supporting point 12, and the second bracket 2 is correspondingly provided with the second supporting point 12; the third fulcrum 13 is provided similarly to the first fulcrum 11 and the second fulcrum 12. And the first bracket 1 and the second bracket 2 can be provided with only a first supporting point 11, and other supporting points can be provided by other slewing devices; the first bracket 1 and the second bracket 2 can be provided with a first supporting point 11 and a second supporting point 12, and the third supporting point 13 can be arranged by other slewing devices; the type of fulcrum provided on the first bracket 1 can be analogized.

And at least one of the first carrier 1 and the second carrier 2 has radial support with respect to the first centre of revolution 71, the second centre of revolution 72 and/or the third centre of revolution 73. As shown in fig. 1, the radial support about the first revolution center line 71 is the first mount 1, the radial support about the second revolution center line 72 is the second sub-mount 22, and the radial support about the third revolution center line 73 is the first sub-mount 23.

As shown in fig. 2, the first bracket 1 and the second bracket 2 are suitably disposed opposite to each other, the first bracket 1 has a radial support about the first rotation center line 71, that is, can support the main pipe 61, the first supporting point 11 is located in the middle of the first bracket 1, and the second supporting point 12 and the third supporting point 13 are located on both sides of the first supporting point 11;

the second bracket 2 comprises a connecting part 21 positioned at the middle part, and a first sub-bracket 23 and a second sub-bracket 22 positioned at two sides, wherein the first sub-bracket 23 is provided with a radial support about the third rotation center line 73 and can support the second branch pipe 63; the second sub-mount 22 has radial support about the second swivel centerline 72 capable of supporting the first branch pipe 62; the first sub-support 23 and the second sub-support 22 are connected by the connection portion 21, the connection portion 21 is provided with the first supporting point 11, the first supporting point 11 is located between the first branch pipe 62 and the second branch pipe 63, as shown in fig. 10, and the first sub-support 23 and the second sub-support 22 are correspondingly provided with the third supporting point 13 and the second supporting point 12.

In this embodiment, the radial support may be an outer support or an inner support; the turning device in fig. 2 is an internal support, has a simple structure, can simultaneously set the first turning center line 71, the second turning center line 72 and the third turning center line 73, is compact in arrangement, can better install the branch pipe 6, and is convenient for welding the welding seam of the branch pipe 6.

Specifically, as shown in fig. 1, the first bracket 1 includes a plurality of first supports 101 and a first keel 102 disposed along a radial direction of the first rotation center line 71, wherein one end of each of the first supports 101 converges on the first rotation center line 71 to form a rice-shaped structure or an asterisk-shaped structure, one end of each of the first keels 102 is connected to one end of the corresponding first support 101 away from the first rotation center line 71, the other end of the corresponding first support 101 converges on the first rotation center line 71, and the first support 11 is disposed, and the first support 11 is located at one side of the first support 101 away from the second bracket 2; the first bracket 1 is used for being supported on the inner side of the main pipe 61, as shown in fig. 9;

the first sub-bracket 23 includes a plurality of third supports 231 and third keels 232 disposed along a radial direction of the third rotation center line 73, wherein one end of each third support 231 is converged on the third rotation center line 73 to form a cross structure, one end of each third keel 232 is connected to one end of the corresponding third support 231 away from the third rotation center line 73, the other end is converged on the third rotation center line 73, and the third supporting point 13 is disposed, and the third supporting point 13 is located at one side of the third support 231 away from the first bracket 1; the first sub-bracket 23 is used for being supported on the inner side of the second branch pipe 63 as shown in fig. 10;

The second sub-support 22 includes a plurality of second supports 221 and second keels 222 disposed along a radial direction of the second rotation center line 72, wherein one end of each second support 221 converges on the second rotation center line 72 to form a cross structure, one end of each second keel 222 is connected to one end of the corresponding second support 221 away from the second rotation center line 72, the other end of the corresponding second keel converges on the second rotation center line 72, and the second support 12 is disposed on the second support 221 away from the first support 1, and the second sub-support 22 is configured to support the inner side of the first branch pipe 62, as shown in fig. 10.

The slewing device adopts a keel matched supporting mode, has a stable structure, and can ensure the stability of the bifurcated pipe 6 during integral rotation. The first support corresponds to the main pipe of the branch pipe, the first sub-support 23 and the second sub-support 22 correspond to the two branch pipes of the branch pipe, and since the diameter of the main pipe is generally larger than that of the branch pipes, one end of the first support 101 is converged on the first rotation center line 71 to form a rice-shaped structure or an asterisk-shaped structure, compared with the cross-shaped structure of the first sub-support 23 and the second sub-support 22, the radial support capacity is stronger, and the stability during rotation along the central axis of the main pipe can be ensured.

According to the turning device of the embodiment, by arranging the turning device with two first fulcrums 11, two second fulcrums 12 and two third fulcrums 13, and enabling the first fulcrums 11 to form a first turning center line 71, the second fulcrums 12 to form a second turning center line 72 and the third fulcrums 13 to form a third turning center line 73, a main pipe and two branch pipes of a bifurcated pipe can be arranged on the turning device, as shown in fig. 7, the axes of the main pipe and the two branch pipes are overlapped with the first turning center line 71, the second turning center line 72 and the third turning center line 73, namely, the bifurcated pipe can be integrally turned around the first turning center line 71, and then a welding seam related to the main pipe can be turned around the first turning center line 71, so that a welding worker or a welding device 8 can weld a welding seam related to the turned main pipe; similarly, the bifurcated pipe can be integrally rotated around the second rotation center line 72 or the third rotation center line 73, so that the relevant welding seams of the two branch pipes can be rotated around the corresponding rotation center lines, and the welding worker or the welding device 8 can weld the relevant welding seams of the rotated branch pipes.

Example 2

The present embodiment provides a bifurcated pipe welding apparatus, which is a bifurcated pipe mechanical automation manufacturing apparatus, and referring to fig. 3-6, including the slewing device described in embodiment 1, and further including a driving mechanism 3, where a rotating shaft 331 of the driving mechanism 3 is used to connect a first supporting point 11, a second supporting point 12 or a third supporting point 13 of the slewing device.

In the present embodiment, the drive mechanism 3 may be provided only to one of the first fulcrum 11, the second fulcrum 12, or the third fulcrum 13, and rotation corresponding to the rotation center line may be achieved. When the turning device comprises two first fulcra 11, two second fulcra 12 and two third fulcra 13, by providing two driving mechanisms 3, the rotating shafts 331 of the two driving mechanisms 3 are used for connecting the two first fulcra 11, the two second fulcra 12 or the two third fulcra 13. The rotation shafts 331 of the two driving mechanisms 3 are used to connect the two first fulcra 11, the two second fulcra 12 or the two third fulcra 13, and the same rotation shaft force is applied, as shown in fig. 3, so that the load of the single driving mechanism 3 can be reduced in the case that the required rotation shaft force is constant. The driving mechanism 3 may be divided into a driving mechanism and a driven mechanism, and is connected to the first bracket 1 or the second bracket 2 of the turning device, and at least one of the first bracket 1 and the second bracket 2 is the driving mechanism. The driving mechanism 3 is a roller frame; or a motor reducer or a hydraulic motor or a rotary disc which are arranged on the upright post, wherein the upright post is fixed or lifting, and the height of the lifting upright post is adjusted according to different movement spaces of the branch pipe 6; or as shown in fig. 3.

As shown in fig. 3, the driving mechanism 3 includes a fixing portion 31, a lifting portion 32 and a rotating portion 33, the lifting portion 32 is fixed on the fixing portion 31, the lifting portion 32 can drive the rotating portion 33 to lift, the rotating portion 33 is provided with a first rotating motor 34, the first rotating motor 34 has a rotating shaft 331 horizontally arranged, the rotating shaft 331 is connected with a corresponding supporting point, and the lifting portion 32 can lift and lower the turning device, so that the branch pipe is convenient to be integrally mounted on the turning device.

As shown in fig. 3 to 6, the bifurcated pipe welding apparatus further includes a horizontal rotation device 4, the horizontal rotation device 4 includes a support plate 41 and a rotation bracket 42 located directly above the support plate 41, and the rotation bracket 42 can rotate on the support plate 41 after being driven by a second rotation motor 43. The lifting part 32 lowers the height of the turning device, and when the whole branch pipe is installed on the turning device, the whole branch pipe can be towed to facilitate the installation of the branch pipe. As shown in fig. 6, the top surface of the rotating bracket 42 is provided with a first guide groove 423 and two second guide grooves 424, the length direction of the first guide groove 423 is perpendicular to the central axis of the main pipe of the branch pipe, two first wedges 421 are embedded in the first guide groove 423, the inclined surfaces of the two first wedges 421 are oppositely arranged, and as shown in fig. 5, the two first wedges 421 can slide in the first guide groove 423, so that the support of the main pipe 61 with different sizes can be adapted; as shown in fig. 6, the two second guide grooves 424 are parallel to or coincide with the central axes of the two branch pipes, and the second wedge blocks 422 are embedded in the second guide grooves 424, the inclined planes of the second wedge blocks 422 are arranged towards the center of the rotating bracket 42, and the second wedge blocks 422 can move in the corresponding second guide grooves 424, so that the second wedge blocks 422 can adapt to branch pipes with different sizes for supporting.

In the welding process of the bifurcated pipe, the rotating shaft 331 of the driving mechanism 3 is connected with one of the fulcrums, such as the first fulcrums 11 in fig. 6, and after the rotary welding of the corresponding rotation center line is realized, the rotating device and the bifurcated pipe can be integrally arranged on the rotating bracket 42 by being put down, the rotating bracket 42 rotates on the supporting plate 41 to drive the rotating device and the bifurcated pipe to integrally rotate, the connection position of the rotating device and the driving mechanism can be adjusted, and the connection position can be converted among the first rotation center line, the second rotation center line or the third rotation center line, so that other fulcrums can be rotated to be aligned and connected with the rotating shaft of the driving mechanism 3, and the corresponding rotary welding of other rotation center lines can be performed. In this way, there is no need to provide more driving mechanisms 3, nor to move the position of the driving mechanisms 3.

In this embodiment, a corresponding track 5 is further provided for the horizontal rotation device 4, and the support disc 41 can move along the track 5, so as to adjust the position of the support disc 41, so as to facilitate the use of the support disc 41, and reduce the interference of welding when the support disc 41 is not in use. As shown in fig. 3-6, the top of the rail 5 and the bottom of the supporting plate 41 are slidably connected by a guide rail pair, as shown in fig. 4, the guiding is accurate, the sliding is stable, the horizontal rotating device 4 can be prevented from being separated from the rail 5, and the horizontal rotating device 4 is convenient to fix on the rail 5. The rail 5 is provided with a limit structure 51 at only one end, and the limit structure 51 can limit the horizontal rotation device 4 to pass through, namely: one end of the non-limiting structure 51 is convenient for installing the supporting disc 41 on the top of the track 5 to form a guide rail pair structure; one end provided with a limit structure 51 serves as the moving end of the support plate 41, and prevents the support plate 41 from sliding out. And the rail 5 is arranged below the main pipe 61.

In this embodiment, as shown in fig. 11 and 12, the bifurcated pipe welding apparatus further includes a welding device 8, where the welding device 8 is a welding robot or an automatic welding machine, and if a submerged arc welding apparatus is adopted, efficient welding and corresponding welding detection work can be performed. And be provided with guide rail seat 81 on the same side of two actuating mechanism 3, for example the left side of fig. 11, be equipped with guide rail 82 on the guide rail seat 81, guide rail 82 sets up along the axial of main pipe 61 for welding set 8 can remove to the different axial position of corresponding main pipe 61 along guide rail 82, and welding set 8 can adopt different degrees of freedom, and then is convenient for weld to the bifurcated pipe welding seam. As shown in fig. 11, the welding device 8 is capable of welding the first circumferential weld 611 of the main pipe 61, the first arc weld 612 between the main pipe 61 and the first branch pipe 62, and the second arc weld 613 of the main pipe 61 and the second branch pipe 63.

According to the bifurcated pipe welding equipment, the bifurcated pipe is integrally erected by adopting the rotating device, so that the axes of the main pipe and the two branch pipes are overlapped with the first rotating center line 71, the second rotating center line 72 and the third rotating center line 73, namely, the bifurcated pipe is integrally rotated around the first rotating center line 71 by connecting the rotating shaft 331 of the driving mechanism 3 with the first supporting point 11, and then the welding seam related to the main pipe is rotated around the first rotating center line 71, so that the welding device 8 can weld the welding seam related to the rotated main pipe; it can be known from the same principle that the rotating shaft 331 of the driving mechanism 3 may be connected to the second pivot 12 or the third pivot 13, so that the bifurcated pipe integrally rotates around the second rotation center line 72 or the third rotation center line 73, and further, the relevant welding seams of the two branch pipes may rotate around the corresponding rotation center lines, so that the welding device 8 welds the relevant welding seams of the rotating branch pipes, that is, the installation of the bifurcated pipe and the rotation movement of the vertical surface are realized through the mechanical devices such as the rotation device and the driving mechanism 3, and meanwhile, the efficient automatic welding of the welding seams inside and the welding seams outside the bifurcated pipe is realized.

Example 3

The present embodiment provides a method for welding a bifurcated pipe, which adopts the bifurcated pipe welding apparatus described in embodiment 2 to weld a weld joint of a bifurcated pipe 6, and includes the following steps:

s1, spot welding the welding seam of the branch pipe 6 to form a whole branch pipe 6 and supporting the whole branch pipe on a turning device, wherein as shown in fig. 7-10, the axis of a main pipe 61 of the branch pipe 6 is overlapped with a first turning center line 71, the axis of a first branch pipe 62 of the branch pipe 6 is overlapped with a second turning center line 72, and the axis of a second branch pipe 63 of the branch pipe 6 is overlapped with a third turning center line 73;

s2, the whole bifurcated pipe 6 rotates along a first rotation center line 71, and a first circumferential weld 611 of the main pipe 61 is welded by the welding device 8; the whole branch pipe 6 rotates along the second rotation center line 72, and the second circumferential weld 621 of the first branch pipe 62 is welded by the welding device 8; the branch pipe 6 is entirely rotated along the third rotation center line 73, and the third circumferential weld 631 of the second branch pipe 63 is welded by the welding device 8. Wherein the welding device 8 can weld the inner and outer weld seams. And in the whole rotation welding process of the bifurcated pipe, the welding quality of the welding line is detected on line, or the quality detection is carried out after the welding is finished. The bifurcated pipe welding seam can adopt a submerged-arc automatic welding process, and the submerged-arc automatic welding is in a single wire, double wire or multiple wire mode. The welding device 8 can be an automatic welding special machine or a welding robot, and can perform efficient welding and corresponding welding detection work by adopting submerged arc welding equipment.

In step S2, welding of a first arc-shaped weld 612 between the main pipe 61 and the first branch pipe 62, a second arc-shaped weld 613 between the main pipe 61 and the second branch pipe 63, and a third arc-shaped weld 623 between the first branch pipe 62 and the second branch pipe 63 may also be included; the whole branch pipe 6 rotates along the first rotation center line 71 or rotates along the second rotation center line 72, and the first arc welding seam 612 is welded by the welding device 8; the whole branch pipe 6 rotates along the first rotation center line 71 or the third rotation center line 73, and the second arc welding joint 613 is welded by the welding device 8; the bifurcated pipe 6 is rotated integrally along the second revolution center line 72 or along the third revolution center line 73, and the third arc-shaped weld 623 is welded by the welding device 8.

Specifically, the step S2 includes the following steps:

s21, controlling the whole of the branch pipe 6 to rotate along any one of a first rotation center line 71, a second rotation center line 72 and a third rotation center line 73 through the driving mechanism 3, and welding corresponding welding seams through a welding device 8;

s22, stopping rotation of the branch pipe 6 along the current rotation center line, removing connection between the driving mechanism 3 and the rotation device, and horizontally rotating the branch pipe 6 to enable the other rotation center line to rotate to be aligned with the driving mechanism 3 and form connection;

S23, controlling the whole bifurcated pipe 6 to rotate along the current rotation center line through the driving mechanism 3, and welding corresponding welding seams through the welding device 8;

s24, repeating the steps S22 and S23 until the welding seam of the branch pipe 6 to be welded is completed.

By adopting the bifurcated pipe welding method, the welded seam of the bifurcated pipe 6 is subjected to spot welding to form the bifurcated pipe 6 as a whole, so that the bifurcated pipe 6 can integrally rotate around the rotation center line; and by rotating the branch pipe 6 along the first rotation center line 71, the first circumferential weld 611 of the main pipe 61, the first arc weld 612 between the main pipe 61 and the first branch pipe 62, and the second arc weld 613 between the main pipe 61 and the second branch pipe 63 can be quickly welded by the welding device 8; by rotating the branch pipe 6 along the second rotation center line 72, the second circumferential weld 621 of the first branch pipe 62, the first arc weld 612 between the main pipe 61 and the first branch pipe 62, and the third arc weld 623 between the first branch pipe 62 and the second branch pipe 63 can be quickly welded by the welding device 8; by rotating the branch pipe 6 along the third rotation center line 73, the third circumferential weld 631 of the second branch pipe 63, the second arc weld 613 between the main pipe 61 and the second branch pipe 63, and the third arc weld 623 between the first branch pipe 62 and the second branch pipe 63 can be quickly welded by the welding device 8; the welding speed of the circumferential weld joints, the first arc weld joint 612, the second arc weld joint 613 and the third arc weld joint 623 of the main pipe and the branch pipe of the branch pipe can be improved, and the labor intensity is reduced. After the welding of the welding seam corresponding to the current rotation center line is completed, the rotation device and the fork pipe are integrally lowered through the lifting part 32, and the connection between the driving mechanism 3 and the current pivot of the rotation device is removed, so that the horizontal rotation device 4 can be matched to drive the fork pipe to integrally rotate with the rotation device, the pivot corresponding to the other rotation center line of the rotation device can be aligned and connected with the driving mechanism 3, after the connection, the rotation device and the fork pipe are integrally lifted through the lifting part 32, and the horizontal rotation device 4 is moved away from the lower part of the fork pipe through the track 5, as shown in fig. 10, the vertical surface rotation of the fork pipe is prevented from being limited, and the welding seam corresponding to the other rotation center line can be welded.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (16)

1. A swivel device characterized by comprising at least two first fulcra (11), at least two second fulcra (12) and at least two third fulcra (13), the first fulcra (11) forming a first swivel centre line (71), the second fulcra (12) forming a second swivel centre line (72), the third fulcra (13) forming a third swivel centre line (73).

2. The swivel arrangement according to claim 1, characterized in that a horizontal projection of the second swivel centre line (72), a horizontal projection of the third swivel centre line (73) and a horizontal projection of the first swivel centre line (71) intersect, the horizontal projections of the second swivel centre line (72) and the third swivel centre line (73) being symmetrical with respect to the horizontal projection of the first swivel centre line (71).

3. The slewing device according to claim 2, characterized in that the slewing device comprises a first bracket (1) and a second bracket (2), the first bracket (1) and the second bracket (2) are arranged at intervals along the transverse direction of the slewing device, the first bracket (1) and the second bracket (2) are correspondingly provided with the first pivot (11), the second pivot (12) and/or the third pivot (13), and at least one of the first bracket (1) and the second bracket (2) is provided with radial support about the first slewing center line (71), the second slewing center line (72) and/or the third slewing center line (73).

4. A swivel arrangement according to claim 3, characterized in that the first bracket (1) and the second bracket (2) are arranged opposite, the first bracket (1) having a radial support with respect to the first swivel centre line (71), the first pivot point (11) being located in the middle of the first bracket (1), the second pivot point (12) and the third pivot point (13) being located on both sides of the first pivot point (11);

the second support (2) comprises a connecting portion (21) located in the middle and a first sub-support (23) and a second sub-support (22) located on two sides, the first sub-support (23) is provided with radial support relative to a third rotation center line (73), the second sub-support (22) is provided with radial support relative to a second rotation center line (72), the first sub-support (23) and the second sub-support (22) are connected through the connecting portion (21), the connecting portion (21) is provided with a first supporting point (11), and the first sub-support (23) and the second sub-support (22) are correspondingly provided with a third supporting point (13) and a second supporting point (12).

5. The slewing device according to claim 4, wherein the first bracket (1) comprises a plurality of first supports (101) and first keels (102) which are arranged along the radial direction of the first slewing center line (71), one end of all the first supports (101) is converged on the first slewing center line (71) to form a rice-shaped structure or an asterisk-shaped structure, one end of the first keels (102) is connected with one end of the corresponding first supports (101) far away from the first slewing center line (71), the other end is converged on the first slewing center line (71) and is provided with the first supporting points (11), and the first supporting points (11) are positioned on one side of the first supports (101) far away from the second bracket (2);

The first sub-bracket (23) comprises a plurality of third supports (231) and third keels (232) which are arranged along the radial direction of the third rotation center line (73), one end of each third support (231) is converged on the third rotation center line (73) to form a cross structure, one end of each third keel (232) is connected to one end, far away from the third rotation center line (73), of the corresponding third support (231), the other end of each third keel is converged on the third rotation center line (73) and is provided with a third supporting point (13), and the third supporting point (13) is located on one side, far away from the first bracket (1), of the corresponding third support (231);

the second sub-support (22) comprises a plurality of second supports (221) and second keels (222) which are arranged along the radial direction of the second rotation center line (72), one ends of all the second supports (221) are converged on the second rotation center line (72) to form a cross structure, one ends of the second keels (222) are connected to one ends, which correspond to the second supports (221), away from the second rotation center line (72), the other ends of the second keels are converged on the second rotation center line (72) and are provided with second fulcrums (12), and the second fulcrums (12) are positioned on one sides, which are away from the first support (1), of the second supports (221).

6. Swivel arrangement according to any of claims 1-5, characterized in that the first swivel centre line (71) coincides with the main pipe (61) of the branch pipe (6) axis; the second rotation center line (72) coincides with the axis of the first branch pipe (62) of the branch pipe (6); the third rotation center line (73) coincides with the axis of the second branch pipe (63) of the branch pipe (6).

7. A bifurcated pipe welding apparatus comprising a swivel device according to any one of claims 1 to 6, and further comprising a drive mechanism (3), wherein a shaft (331) of the drive mechanism (3) is adapted to be connected to a first fulcrum (11), a second fulcrum (12) or a third fulcrum (13) of the swivel device.

8. The bifurcated pipe welding apparatus according to claim 7, wherein the swivel device includes two first fulcrums (11), two second fulcrums (12) and two third fulcrums (13), the driving mechanism (3) is provided with two, and rotation shafts (331) of the two driving mechanisms (3) are used to connect the two first fulcrums (11), the two second fulcrums (12) or the two third fulcrums (13).

9. The bifurcated pipe welding apparatus according to claim 8, wherein the driving mechanism (3) includes a fixing portion (31), a lifting portion (32) and a rotating portion (33), the lifting portion (32) is fixed to the fixing portion (31), the lifting portion (32) can drive the rotating portion (33) to lift, and the rotating portion (33) is provided with the rotating shaft (331).

10. The pipe branching welding apparatus as claimed in any one of claims 7-9, comprising horizontal turning means (4), said horizontal turning means (4) comprising a support disc (41) and a turning bracket (42) located directly above said support disc (41), said turning bracket (42) being rotatable on said support disc (41).

11. The bifurcated pipe welding apparatus according to claim 10, comprising a track (5), the support disc (41) being movable along the track (5).

12. The bifurcated pipe welding apparatus according to claim 11, wherein the top of the rail (5) and the bottom of the supporting plate (41) are slidably connected by a rail pair, and only one end of the rail (5) is provided with a limiting structure (51), and the limiting structure (51) can limit the horizontal rotation device (4) to pass through.

13. The bifurcated pipe welding apparatus according to any one of claims 7 to 9, further comprising a welding device (8), the welding device (8) being a welding robot or an automated welding machine.

14. A method of welding a bifurcated pipe, characterized in that a bifurcated pipe welding apparatus according to any one of claims 7 to 13 is used to weld a weld joint of a bifurcated pipe (6), comprising the steps of:

s1, spot welding a welding line of a branch pipe (6) to form a whole branch pipe (6) and supporting the whole branch pipe on a rotary device, so that the axis of a main pipe (61) of the branch pipe (6) coincides with a first rotary center line (71), the axis of a first branch pipe (62) of the branch pipe (6) coincides with a second rotary center line (72) and the axis of a second branch pipe (63) of the branch pipe (6) coincides with a third rotary center line (73);

S2, the whole bifurcated pipe (6) rotates along a first rotation center line (71), and a first circumferential weld joint (611) of the main pipe (61) is welded through a welding device (8); the whole branch pipe (6) rotates along a second rotation center line (72), and a second circumferential weld (621) of the first branch pipe (62) is welded by a welding device (8); the whole branch pipe (6) rotates along a third rotation center line (73), and a third circumferential weld (631) of the second branch pipe (63) is welded by a welding device (8).

15. The bifurcated pipe welding method according to claim 14, characterized by further comprising welding a first arc-shaped weld (612) between the main pipe (61) and the first branch pipe (62), a second arc-shaped weld (613) between the main pipe (61) and the second branch pipe (63), and a third arc-shaped weld (623) between the first branch pipe (62) and the second branch pipe (63) in step S2;

the whole bifurcated pipe (6) rotates along a first rotation center line (71) or rotates along a second rotation center line (72), and a first arc welding line (612) is welded by a welding device (8); the whole bifurcated pipe (6) rotates along a first rotation center line (71) or rotates along a third rotation center line (73), and a second arc welding joint (613) is welded by a welding device (8); the branching pipe (6) integrally rotates along a second rotation center line (72) or rotates along a third rotation center line (73), and a third arc-shaped welding seam (623) is welded by a welding device (8).

16. The method of welding a branch pipe according to any one of claims 14 to 15, wherein said step S2 includes the steps of:

s21, controlling the whole branch pipe (6) to rotate along any one of a first rotation center line (71), a second rotation center line (72) and a third rotation center line (73) through the driving mechanism (3), and welding corresponding welding seams through a welding device (8);

s22, stopping rotation of the branch pipe (6) along the current rotation center line, removing connection between the driving mechanism (3) and the rotation device, and horizontally rotating the branch pipe (6) to enable the other rotation center line to rotate to be aligned with the driving mechanism (3) and form connection;

s23, controlling the whole bifurcated pipe (6) to rotate along the current rotation center line through the driving mechanism (3), and welding corresponding welding seams through a welding device (8);

and repeating the steps S22 and S23 until the welding of the weld joint of the bifurcated pipe (6) which is required to be welded is completed.