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

Abstract

The present invention relates to a rotating device, a branch pipe welding device and a branch pipe welding method. A rotating device includes at least two first fulcrums, at least two second fulcrums and at least two third fulcrums, wherein the first fulcrum forms a first rotation center line, the second fulcrum forms a second rotation center line, and the third fulcrum forms a third rotation center line. By providing a rotating device with at least two first fulcrums, at least two second fulcrums and at least two third fulcrums, and making the first fulcrum form the first rotation center line, the second fulcrum form the second rotation center line and the third fulcrum form the third rotation center line, the branch pipe as a whole can be rotated around the first rotation center line, and then the welds related to the main pipe can be rotated around the first rotation center line, the second rotation center line or the third rotation center line, so that the welding device can weld the welds related to the corresponding rotating main pipe and the two branch pipes; compared with manual welding, its welding efficiency is higher and the labor intensity is low.

Description

Technical Field

[0001] The invention relates to a welding construction method for a bifurcated pipe, in particular to a rotary device, bifurcated pipe welding equipment and a bifurcated pipe welding method. Background Art

[0002] A bifurcated pipe consists of a main pipe and two branch pipes. Typically, the main pipe and the two branch pipes are aligned using pre-welded annular pipe sections and welded to a circular weld. The main pipe is then welded to the arc weld between the two branches, and then to the arc weld between the two branches, to form the bifurcated pipe. Existing bifurcated pipe manufacturing processes primarily rely on tailored welding, which is labor-intensive and inefficient. Summary of the Invention

[0003] The purpose of the present invention is to provide a rotary device, a fork pipe welding device and a fork pipe welding method to address the problems of high labor intensity and low welding efficiency in the prior art fork pipe welding.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A rotating device includes at least two first fulcrums, at least two second fulcrums and at least two third fulcrums, wherein the first fulcrums form a first rotation center line, the second fulcrums form a second rotation center line, and the third fulcrums form a third rotation center line.

[0006] By setting up a rotating device with at least two first fulcrums, at least two second fulcrums and at least two third fulcrums, and making the first fulcrum form a first rotation center line, the second fulcrum form a second rotation center line and the third fulcrum form a third rotation center line, the main pipe and the two branch pipes of the branch pipe can be set on the rotating device, so that the axes of the main pipe and the two branch pipes coincide with the first rotation center line, the second rotation center line and the third rotation center line, that is, the branch pipe as a whole can be rotated around the first rotation center line, and then the welds related to the main pipe can be rotated around the first rotation center line, so that the welding worker or the welding device can weld the welds related to the rotating main pipe; similarly, it can also be known that the branch pipe as a whole can be rotated around the second rotation center line or the third rotation center line, and then the welds related to the two branch pipes can be rotated around the corresponding rotation center line, so that the welding device can weld the welds related to the rotating branch pipes. Compared with manual welding, its welding efficiency is higher and the labor intensity is lower.

[0007] Preferably, the horizontal projection of the second rotation center line, the horizontal projection of the third rotation center line and the horizontal projection of the first rotation center line intersect, and the horizontal projection of the second rotation center line and the horizontal projection of the third rotation center line are symmetrical about the horizontal projection of the first rotation center line; so that the first rotation center line of the rotating device corresponds to the central axis of the main pipe of the branch pipe, and the second rotation center line and the third rotation center line correspond to the central axes of the two branch pipes of the branch pipe respectively, so that the branch pipe as a whole can rotate around the central axis of the main pipe or the branch pipe, and welding is more convenient and quick.

[0008] Preferably, the rotating device includes a first bracket and a second bracket, the first bracket and the second bracket are arranged at a lateral interval along the rotating device, the first bracket and the second bracket are correspondingly provided with the first fulcrum, the second fulcrum and / or the third fulcrum, and at least one of the first bracket and the second bracket has radial support about the first rotation center line, the second rotation center line and / or the third rotation center line.

[0009] Preferably, the first bracket and the second bracket are arranged opposite to each other, the first bracket has radial support about the first rotation center line, the first fulcrum is located in the middle of the first bracket, and the second fulcrum and the third fulcrum are located on both sides of the first fulcrum;

[0010] The second bracket includes a connecting portion located in the middle and a first sub-bracket and a second sub-bracket located on both sides. The first sub-bracket has radial support about the third rotation center line, and the second sub-bracket has radial support about the second rotation center line. The first sub-bracket and the second sub-bracket are connected through the connecting portion, and the first fulcrum is provided on the connecting portion. The first sub-bracket and the second sub-bracket are correspondingly provided with the third fulcrum and the second fulcrum.

[0011] The above-mentioned rotating device has a simple structure and can set the first rotating center line, the second rotating center line and the third rotating center line at the same time. It is compactly arranged, can better install the branch pipe, and facilitates the welding of the branch pipe weld.

[0012] Preferably, the first bracket includes a plurality of first supports and first keels arranged radially along the first rotation centerline, one end of all the first supports converges on the first rotation centerline to form a V-shaped structure or an asterisk-shaped structure, one end of the first keel is connected to the end of the corresponding first support away from the first rotation centerline, and the other end converges on the first rotation centerline to set the first fulcrum, and the first fulcrum is located on the side of the first support away from the second bracket;

[0013] The first sub-bracket includes a plurality of third supports and third keels arranged radially along the third rotation centerline, one end of each of the third supports converging on the third rotation centerline to form a cross-shaped structure, one end of each third keel is connected to an end of the corresponding third support away from the third rotation centerline, and the other end converges on the third rotation centerline to form a third fulcrum, and the third fulcrum is located on a side of the third support away from the first bracket;

[0014] The second sub-bracket includes a plurality of second supports and second keels arranged radially along the second rotation center line, one end of all the second supports converges on the second rotation center line to form a cross structure, one end of the second keel is connected to the end of the corresponding second support away from the second rotation center line, and the other end converges on the second rotation center line and sets the second fulcrum, and the second fulcrum is located on the side of the second support away from the first bracket.

[0015] The slewing mechanism utilizes a keel with support, resulting in a stable structure that ensures stability during overall rotation of the bifurcated pipe. The first bracket corresponds to the main pipe of the bifurcated pipe, while the first and second sub-brackets correspond to the two branch pipes of the bifurcated pipe. Since the main pipe is generally larger in diameter than the branch pipes, one end of the first support converges on the first slewing centerline to form a cross-shaped or asterisk-shaped structure. Compared to the cross-shaped structure of the first and second sub-brackets, this provides greater radial support and ensures stability during rotation along the central axis of the main pipe.

[0016] Preferably, the first rotation center line coincides with the main pipe axis of the bifurcated pipe; the second rotation center line coincides with the first branch pipe axis of the bifurcated pipe; and the third rotation center line coincides with the second branch pipe axis of the bifurcated pipe.

[0017] A bifurcated pipe welding device comprises the rotating device and a driving mechanism, wherein the rotating shaft of the driving mechanism is used to connect the first fulcrum, the second fulcrum or the third fulcrum of the rotating device.

[0018] The branch pipe welding equipment described in this scheme adopts the above-mentioned rotating device to set up the branch pipe as a whole, so that the axes of the main pipe and the two branch pipes coincide with the first rotation center line, the second rotation center line and the third rotation center line, that is, by connecting the rotating shaft of the driving mechanism to the first fulcrum, the branch pipe as a whole can be rotated around the first rotation center line, and then the welds related to the main pipe can be rotated around the first rotation center line, so that the welding device can weld the welds related to the rotating main pipe; similarly, it is also possible to connect the rotating shaft of the driving mechanism to the second fulcrum or the third fulcrum, so that the branch pipe as a whole can be rotated around the second rotation center line or the third rotation center line, and then the welds related to the two branch pipes can be rotated around the corresponding rotation center line, so that the welding device can weld the welds related to the rotating branch pipe. Compared with manual welding, its welding efficiency is higher and the labor intensity is lower.

[0019] Preferably, the rotating device includes two first fulcrums, two second fulcrums and two third fulcrums, and two driving mechanisms are provided. The rotating shafts of the two driving mechanisms are used to connect the two first fulcrums, the two second fulcrums or the two third fulcrums.

[0020] By using the rotating shafts of two driving mechanisms to connect the two first fulcrums, the two second fulcrums or the two third fulcrums and applying the same rotating shaft force, the burden of a single driving mechanism can be reduced when the required rotating shaft force is constant.

[0021] Preferably, the driving mechanism includes a fixed part, a lifting part and a rotating part, the lifting part is fixed to the fixed part, the lifting part can drive the rotating part to move up and down, and the rotating part is provided with the rotating shaft.

[0022] The rotary device can be raised and lowered by the lifting part, which makes it easy to install the branch pipe as a whole on the rotary device.

[0023] Preferably, a horizontal rotating device is included, wherein the horizontal rotating device includes a support plate and a rotating bracket located directly above the support plate, and the rotating bracket can rotate on the support plate.

[0024] By lowering the height of the swivel mechanism, the entire branch pipe can be held in place when it is installed on the swivel mechanism, facilitating installation. Furthermore, during the welding process, after the drive mechanism's rotating shaft connects to one of the pivot points and performs rotational welding corresponding to the rotational centerline, the swivel mechanism and branch pipe can be lowered onto the rotating bracket. The rotating bracket rotates on the support plate, driving the swivel mechanism and branch pipe to rotate, allowing the remaining pivot points to align with the drive mechanism's rotating shaft for corresponding rotational welding along other rotational centerlines. This approach eliminates the need for additional drive mechanisms or relocation of the drive mechanisms.

[0025] Preferably, a track is included, and the support plate can move along the track, which facilitates adjustment of the position of the support plate to facilitate use of the support plate and reduce interference with welding when the support plate is not in use.

[0026] Preferably, the top of the track and the bottom of the support plate are slidably connected by a guide rail pair, and only one end of the track is provided with a limiting structure, and the limiting structure can limit the passage of the horizontal rotating device.

[0027] The top of the track and the bottom of the support plate are connected by a guide rail pair, which provides precise guidance, stable sliding, and easy fixation. By providing a limit structure at one end of the track, the end without the limit structure facilitates the installation of the support plate on the top of the track, forming a guide rail pair structure; the end with the limit structure serves as the end of the support plate's movement, preventing the support plate from sliding out.

[0028] Preferably, the bifurcated pipe welding equipment further includes a welding device, which is a welding robot or an automatic welding machine capable of realizing automated welding.

[0029] A bifurcated pipe welding method, which uses the bifurcated pipe welding equipment to weld the weld of the bifurcated pipe, comprises the following steps:

[0030] S1. Spot-welding the weld seams of the bifurcated pipe to form a bifurcated pipe as a whole and supporting the bifurcated pipe on a rotating device so that the main pipe axis of the bifurcated pipe coincides with the first rotation centerline, the first branch pipe axis of the bifurcated pipe coincides with the second rotation centerline, and the second branch pipe axis of the bifurcated pipe coincides with the third rotation centerline;

[0031] S2. The branch pipe is rotated as a whole along the first rotation center line, and the first circumferential weld of the main pipe is welded by the welding device; the branch pipe is rotated as a whole along the second rotation center line, and the second circumferential weld of the first branch pipe is welded by the welding device; the branch pipe is rotated as a whole along the third rotation center line, and the third circumferential weld of the second branch pipe is welded by the welding device.

[0032] By adopting the branch pipe welding method of the present application, the welds of the branch pipe are spot-welded to form the branch pipe as a whole, so that the branch pipe can rotate as a whole around the rotation center line; and by rotating the branch pipe along the first rotation center line, the first circumferential weld of the main pipe can be quickly welded by the welding device; by rotating the branch pipe along the second rotation center line, the second circumferential weld of the first branch pipe can be quickly welded by the welding device; by rotating the branch pipe along the third rotation center line, the third circumferential weld of the second branch pipe can be quickly welded by the welding device, which can increase the welding speed of the circumferential welds of the main pipe and branch pipe of the branch pipe and reduce the intensity of manual labor.

[0033] Preferably, in step S2, the process further includes welding a first arc weld between the main pipe and the first branch pipe, a second arc weld between the main pipe and the second branch pipe, and a third arc weld between the first branch pipe and the second branch pipe;

[0034] The branch pipe as a whole rotates along the first rotation center line or along the second rotation center line, and the first arc weld is welded by the welding device; the branch pipe as a whole rotates along the first rotation center line or along the third rotation center line, and the second arc weld is welded by the welding device; the branch pipe as a whole rotates along the second rotation center line or along the third rotation center line, and the third arc weld is welded by the welding device.

[0035] By adopting the above method, the welding device can automatically weld the first arc weld between the main pipe and the first branch pipe, the second arc weld between the main pipe and the second branch pipe, and the third arc weld between the first branch pipe and the second branch pipe, which can further improve the welding speed of the branch pipe and reduce the labor intensity.

[0036] Preferably, step S2 includes the following steps:

[0037] S21, controlling the entire bifurcated pipe to rotate along any one of the first, second, and third rotation centerlines by the driving mechanism, and welding the corresponding welds by the welding device;

[0038] S22, stopping the rotation of the bifurcated pipe along the current rotation centerline and removing the connection between the drive mechanism and the rotation device, then horizontally rotating the bifurcated pipe so that the other rotation centerline is rotated to be aligned with the drive mechanism and connected;

[0039] S23, controlling the entire bifurcated pipe to rotate along the current rotation centerline by the driving mechanism, and welding the corresponding weld by the welding device;

[0040] S24. Repeat steps S22 and S23 until the welds of the branch pipes that need to be welded are completed.

[0041] By adopting the above method, the number of welding equipment can be reduced, the moving of welding equipment can be avoided, and the number of working steps can be reduced, thereby further improving the overall processing speed of the bifurcated pipe and reducing the labor intensity.

[0042] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0043] 1. The rotating device of the present invention is provided with a rotating device having at least two first fulcrums, at least two second fulcrums, and at least two third fulcrums, and the first fulcrums form a first rotation center line, the second fulcrums form a second rotation center line, and the third fulcrums form a third rotation center line. This allows the branch pipe to rotate as a whole around the first rotation center line, thereby allowing the welds related to the main pipe to rotate around the first rotation center line, so that the welding device can weld the welds related to the rotating main pipe; the branch pipe can also be rotated as a whole around the second rotation center line or the third rotation center line, thereby allowing the welds related to the two branch pipes to rotate around the corresponding rotation center line, so that the welding device can weld the welds related to the rotating branch pipes. Compared with manual welding, the welding efficiency is higher and the labor intensity is lower.

[0044] 2. The branch pipe welding equipment described in the present invention adopts the above-mentioned rotating device to set up the branch pipe as a whole, so that the axes of the main pipe and the two branch pipes coincide with the first rotation center line, the second rotation center line and the third rotation center line, that is, by connecting the rotating shaft of the driving mechanism to the first fulcrum, the branch pipe as a whole can be rotated around the first rotation center line, and then the welds related to the main pipe can be rotated around the first rotation center line, so that the welding device can weld the welds related to the rotating main pipe; the rotating shaft of the driving mechanism can also be connected to the second fulcrum or the third fulcrum, so that the branch pipe as a whole can be rotated around the second rotation center line or the third rotation center line, and then the welds related to the two branch pipes can be rotated around the corresponding rotation center line, so that the welding device can weld the welds related to the rotating branch pipe. Compared with manual welding, its welding efficiency is higher and the labor intensity is lower.

[0045] 3. The bifurcated pipe welding method of the present invention can improve the welding speed of the circumferential welds of the main pipe and branch pipe of the bifurcated pipe and reduce the labor intensity. It can also automatically weld the first arc weld between the main pipe and the first branch pipe, the second arc weld between the main pipe and the second branch pipe, and the third arc weld between the first branch pipe and the second branch pipe through the welding device, which can further improve the welding speed of the bifurcated pipe and reduce the labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a schematic structural diagram of the rotary device described in Example 1;

[0047] Figure 2 is a schematic top view of the rotary device described in Example 1;

[0048] Figure 3 is a structural schematic diagram of the bifurcated pipe welding equipment described in Example 2;

[0049] Figure 4 is a front view schematic diagram of the bifurcated pipe welding equipment described in Example 2;

[0050] Figure 5 is a side view schematic diagram of the bifurcated pipe welding equipment described in Example 2;

[0051] Figure 6 is a schematic top view of the bifurcated pipe welding equipment described in Example 2;

[0052] Figure 7 This is a structural diagram of the bifurcated pipe welding method of the present invention using bifurcated pipe welding equipment to weld the relevant welds of the main pipe;

[0053] Figure 8 It is a front view schematic diagram of welding relevant welds of a main pipe using a bifurcated pipe welding device in the bifurcated pipe welding method of the present invention;

[0054] Figure 9 It is a left side schematic diagram of the bifurcated pipe welding method of the present invention using bifurcated pipe welding equipment to weld the relevant welds of the main pipe;

[0055] Figure 10 It is a right side schematic diagram of the bifurcated pipe welding method of the present invention using bifurcated pipe welding equipment to weld the relevant welds of the main pipe;

[0056] Figure 11 It is a schematic diagram of the arrangement of the welding device;

[0057] Figure 12 It is a side view schematic diagram of the arrangement of the welding device.

[0058] Icons: 1-first bracket; 11-first fulcrum; 12-second fulcrum; 13-third fulcrum; 101-first support; 102-first keel; 2-second bracket; 21-connecting portion; 22-second sub-bracket; 221-second support; 222-second keel; 23-first sub-bracket; 231-third support; 232-third keel; 3-driving mechanism; 31-fixing portion; 32-lifting portion; 33-rotating portion; 331-rotating shaft; 34-first rotating motor; 4-horizontal rotating device; 41-support plate; 42-rotating bracket; 421-first wedge; 422-second wedge; 423-first guide groove; 424-second guide groove; 43-second rotating motor; 5-track; 51-limiting structure; 6-branch pipe; 61-main pipe; 611-first circumferential weld; 62-first branch pipe; 621-second circumferential weld; 63-second branch pipe; 631-third circumferential weld; 612-first arc weld; 613-second arc weld; 623-third arc weld; 71-first rotation center line; 72-second rotation center line; 73-third rotation center line; 8-welding device; 81-guide rail seat; 82-guide rail. DETAILED DESCRIPTION

[0059] The present invention will be described in detail below with reference to the accompanying drawings.

[0060] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0061] Example 1

[0062] This embodiment provides a rotary device, see Figure 1-Figure 2 , including at least two first fulcrums 11, at least two second fulcrums 12 and at least two third fulcrums 13, the first fulcrums 11 form a first rotation center line 71, the second fulcrums 12 form a second rotation center line 72, and the third fulcrums 13 form a third rotation center line 73.

[0063] The fulcrums involved in this solution refer to the first fulcrum 11, the second fulcrum 12 and the third fulcrum 13. The rotation center lines involved in this solution refer to the first rotation center line 71, the second rotation center line 72 and the third rotation center line 73. The first rotation center line 71 is formed by the support of at least two first fulcrums 11, the second rotation center line 72 is formed by the support of at least two second rotation center lines 72, and the third rotation center line 73 is formed by the support of at least two third rotation center lines 73. Figure 2 The bifurcated pipe 6 involved in this solution includes a main pipe 61 and two branch pipes, as shown in FIG. Figure 7 As shown, the two branch pipes are a first branch pipe 62 and a second branch pipe 63 .

[0064] The fulcrum involved in this solution is a structure that can be used for support, such as a sleeve or shaft hole that can be connected to a rotating shaft, such as Figure 1 Of course, the first fulcrum 11, the second fulcrum 12 and the third fulcrum 13 can also be a structure like a roller frame, which can ensure that after the bifurcated pipe 6 is supported by the roller frame, the main pipe 61 or the branch pipe of the bifurcated pipe 6 is axially located on the corresponding rotation center line.

[0065] And the first rotation center line 71 coincides with the axis of the main pipe 61 of the fork pipe 6, that is, after the fork pipe 6 is installed on the rotation device, it can rotate around the first rotation center line 71 formed by the first fulcrum 11, that is, rotate about one of the axes of the main pipe 61, 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 fork pipe 6, and is similar to the first rotation center line 71, and rotates about one of the axes of the first branch pipe 62; the third rotation center line 73 coincides with the axis of the second branch pipe 63 of the fork pipe 6, and is similar to the first rotation center line 71, and rotates about one of the axes of the second branch pipe 63.

[0066] 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 about the horizontal projection of the first rotation center line 71, so that the first rotation center line 71 of the rotating 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 correspond to the central axes of the first branch pipe 62 and the second branch pipe 63 of the branch pipe 6 respectively, so that the branch pipe 6 as a whole can rotate around the central axis of the main pipe 61 or the branch pipe, and welding is more convenient and quick.

[0067] In this embodiment, the rotating device includes a first bracket 1 and a second bracket 2, and the first bracket 1 and the second bracket 2 are arranged at intervals along the lateral direction of the rotating device, that is, Figure 2 The left and right directions. The first support 1, the second support 12 and / or the third support 13 are respectively provided on the first bracket 1 and the second bracket 2. That is, if the first bracket 1 is provided with the first support 11, then the second bracket 2 also needs to be provided with the first support 11, thereby forming a first rotation center line 71, which can correspond to the central axis of the main pipe 61 of the branch pipe 6 after the branch pipe 6 is installed; correspondingly, if the first bracket 1 is provided with the second support 12, then the second bracket 2 also needs to be provided with the second support 12; the setting of the third support 13 is similar to the first support 11 and the second support 12. Moreover, the first bracket 1 and the second bracket 2 can only be provided with the first support 11, and the other support points can be provided by other rotating devices; the first bracket 1 and the second bracket 2 can be provided with the first support 11 and the second support 12, and the third support 13 can be provided by other rotating devices; the type of support provided on the first bracket 1 can be deduced by analogy.

[0068] At least one of the first support 1 and the second support 2 has radial support about the first rotation center line 71, the second rotation center line 72 and / or the third rotation center line 73. Figure 1 As shown, the radial support about the first rotation centerline 71 is the first bracket 1 , the radial support about the second rotation centerline 72 is the second sub-bracket 22 , and the radial support about the third rotation centerline 73 is the first sub-bracket 23 .

[0069] like Figure 2 As shown, the first bracket 1 and the second bracket 2 are suitably arranged relative to each other, the first bracket 1 has radial support about the first rotation centerline 71, that is, it can support the main pipe 61, the first support point 11 is located in the middle of the first bracket 1, and the second support point 12 and the third support point 13 are located on both sides of the first support point 11;

[0070] The second bracket 2 includes a connecting portion 21 located in the middle and a first sub-bracket 23 and a second sub-bracket 22 located on both sides. The first sub-bracket 23 has a radial support about the third rotation center line 73 and can support the second branch pipe 63; the second sub-bracket 22 has a radial support about the second rotation center line 72 and can support the first branch pipe 62; the first sub-bracket 23 and the second sub-bracket 22 are connected by the connecting portion 21, and the connecting portion 21 is provided with the first fulcrum 11, and the first fulcrum 11 is located between the first branch pipe 62 and the second branch pipe 63. Figure 10 As shown, the first sub-bracket 23 and the second sub-bracket 22 are correspondingly provided with the third supporting point 13 and the second supporting point 12 .

[0071] In this embodiment, the radial support can be either an external support or an internal support. Figure 2 The rotating device in the embodiment is an internal support with a simple structure. It can simultaneously set the first rotation center line 71, the second rotation center line 72 and the third rotation center line 73. The arrangement is compact, and the branch pipe 6 can be better installed, which facilitates the welding of the weld seam of the branch pipe 6.

[0072] Specifically, such as Figure 1 As shown, the first bracket 1 includes a plurality of first supports 101 and first keels 102 arranged radially along the first rotation center line 71, one end of all the first supports 101 converge on the first rotation center line 71 to form a M-shaped structure or an asterisk-shaped structure, one end of the first keel 102 is connected to the end of the first support 101 away from the first rotation center line 71, and the other end converges on the first rotation center line 71 and is provided with the first fulcrum 11, which is located on the side of the first support 101 away from the second bracket 2; the first bracket 1 is used to support the inner side of the main pipe 61, as shown in FIG. Figure 9 As shown;

[0073] The first sub-bracket 23 includes a plurality of third supports 231 and third keels 232 arranged radially along the third rotation center line 73, one end of all the third supports 231 converge on the third rotation center line 73 to form a cross structure, one end of the third keel 232 is connected to the end of the corresponding third support 231 away from the third rotation center line 73, and the other end converges on the third rotation center line 73 and is provided with the third fulcrum 13, which is located on the side of the third support 231 away from the first bracket 1; the first sub-bracket 23 is used to support the inner side of the second branch pipe 63, such as Figure 10 As shown;

[0074] The second sub-bracket 22 includes a plurality of second supports 221 and second keels 222 arranged radially along the second rotation center line 72, one end of all the second supports 221 converge on the second rotation center line 72 to form a cross structure, one end of the second keel 222 is connected to the end of the corresponding second support 221 away from the second rotation center line 72, and the other end converges on the second rotation center line 72 and is provided with the second fulcrum 12, the second fulcrum 12 is located on the side of the second support 221 away from the first bracket 1, and the second sub-bracket 22 is used to support the inner side of the first branch pipe 62, such as Figure 10 shown.

[0075] The swivel mechanism utilizes a keel-supported design, resulting in a stable structure that ensures stability during overall rotation of the bifurcated pipe 6. The first bracket corresponds to the main pipe of the bifurcated pipe, while the first sub-bracket 23 and the second sub-bracket 22 correspond to the two branches of the bifurcated pipe. Since the diameter of the main pipe is generally larger than that of the branch pipe, one end of the first support 101 converges on the first rotation centerline 71 to form a cross-shaped or asterisk-shaped structure. Compared to the cross-shaped structure of the first and second sub-brackets 23 and 22, this structure provides greater radial support and ensures stability during rotation along the central axis of the main pipe.

[0076] The rotating device of this embodiment is provided with two first fulcrums 11, two second fulcrums 12 and two third fulcrums 13, and the first fulcrum 11 forms a first rotation center line 71, the second fulcrum 12 forms a second rotation center line 72 and the third fulcrum 13 forms a third rotation center line 73. The main pipe and two branch pipes of the branch pipe can be arranged on the rotating device, such as Figure 7 As shown, the axes of the main pipe and the two branch pipes are made to coincide with the first rotation center line 71, the second rotation center line 72 and the third rotation center line 73, that is, the branch pipe as a whole can be rotated around the first rotation center line 71, and then the welds related to the main pipe can be rotated around the first rotation center line 71, so that the welding worker or the welding device 8 can weld the welds related to the rotating main pipe; similarly, it is also possible to allow the branch pipe as a whole to rotate around the second rotation center line 72 or the third rotation center line 73, and then the welds related to the two branch pipes can be rotated around the corresponding rotation center lines, so that the welding worker or the welding device 8 can weld the welds related to the rotating branch pipes. Compared with manual welding, its welding efficiency is higher and the labor intensity is low.

[0077] Example 2

[0078] This embodiment provides a bifurcated pipe welding device, which is a bifurcated pipe mechanical automation manufacturing device. Figure 3-Figure 6, including the rotating device described in Example 1, and also including a driving mechanism 3, the rotating shaft 331 of the driving mechanism 3 is used to connect the first fulcrum 11, the second fulcrum 12 or the third fulcrum 13 of the rotating device.

[0079] In this embodiment, only one of the first fulcrums 11, the second fulcrums 12 or the third fulcrums 13 can be equipped with a driving mechanism 3 to achieve the rotation of the corresponding rotation center line. When the rotating device includes two first fulcrums 11, two second fulcrums 12 and two third fulcrums 13, by setting two driving mechanisms 3, the rotating 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. The rotating 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, and the same rotating shaft force is applied, such as Figure 3 As shown, under the condition that the required shaft force is constant, the burden of a single drive mechanism 3 can be reduced. The drive mechanism 3 can be divided into an active mechanism and a passive mechanism, connected to the first bracket 1 or the second bracket 2 of the rotary device, and at least one of the first bracket 1 and the second bracket 2 is a main power mechanism. The drive mechanism 3 is a roller frame; or a motor reducer or hydraulic motor or a rotary plate installed on a column, the column can be fixed or lifting, and the height of the lifting column is adjusted according to the different movement spaces of the branch pipe 6; or as shown in FIG. Figure 3 The structure shown.

[0080] like Figure 3 As shown, the driving mechanism 3 includes a fixed part 31, a lifting part 32 and a rotating part 33. The lifting part 32 is fixed to the fixed part 31. The lifting part 32 can drive the rotating part 33 to move up and down. The rotating part 33 is provided with a first rotating motor 34. The first rotating motor 34 has a horizontally arranged rotating shaft 331. The rotating shaft 331 is connected to the corresponding fulcrum. The lifting part 32 can raise and lower the rotary device, so that the branch pipe can be installed as a whole on the rotary device.

[0081] like Figure 3-Figure 6 As shown, the bifurcated pipe welding equipment further includes a horizontal rotating device 4, which includes a support plate 41 and a rotating bracket 42 located directly above the support plate 41. The rotating bracket 42 is driven by a second rotating motor 43 and can rotate on the support plate 41. The height of the rotating device is lowered by the lifting part 32, and when the bifurcated pipe is installed on the rotating device, the bifurcated pipe can be dragged to facilitate the installation of the bifurcated pipe. Figure 6As shown, 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 bifurcated pipe, and two first wedges 421 are embedded in the first guide groove 423. The inclined surfaces of the two first wedges 421 are arranged opposite to each other, as shown in FIG. Figure 5 As shown, the two first wedges 421 can slide in the first guide groove 423, so as to adapt to the support of main pipes 61 of different sizes; Figure 6 As shown, the two second guide grooves 424 are respectively parallel to or coincide with the central axes of the two branch pipes, and a second wedge block 422 is embedded in the second guide groove 424. The inclined surface of the second wedge block 422 is set toward the center of the rotating bracket 42. The second wedge block 422 can move in the corresponding second guide groove 424, so that the second wedge block 422 can adapt to support branches of different sizes.

[0082] During the welding operation of the bifurcated pipe, the rotating shaft 331 of the driving mechanism 3 is connected to one of the fulcrums, such as Figure 6 After the first fulcrum 11 in the figure is located and the rotation welding corresponding to the rotation center line is completed, the rotation device and the branch pipe can be lowered onto the rotation bracket 42 as a whole. The rotation bracket 42 rotates on the support plate 41 to drive the rotation of the rotation device and the branch pipe as a whole. The connection position of the rotation device and the drive mechanism can be adjusted, and it can be switched between the first rotation center line, the second rotation center line, or the third rotation center line, so that other fulcrums can be rotated to align with the rotation axis of the drive mechanism 3 to perform corresponding rotation welding on other rotation center lines. In this way, there is no need to provide more drive mechanisms 3 or move the position of the drive mechanism 3.

[0083] In this embodiment, the horizontal rotation device 4 is also provided with a corresponding track 5, and the support plate 41 can move along the track 5, which facilitates the adjustment of the position of the support plate 41 to facilitate the use of the support plate 41 and reduce the interference of the support plate 41 on welding when it is not in use. Figure 3-6 As shown, the top of the track 5 and the bottom of the support plate 41 are connected by a guide rail pair for sliding. Figure 4 As shown, the guide is precise and the sliding is stable, preventing the horizontal rotating device 4 from deviating from the track 5 and facilitating its securement to the track 5. The track 5 is provided with a limiting structure 51 at only one end, which restricts the passage of the horizontal rotating device 4. Specifically, the end without the limiting structure 51 facilitates the installation of the support plate 41 atop the track 5, forming a guide rail substructure; the end with the limiting structure 51 serves as the movable end of the support plate 41, preventing it from sliding off. The track 5 is positioned below and near the main pipe 61.

[0084] In this embodiment, Figure 11 and Figure 12As shown, the bifurcated pipe welding equipment also includes a welding device 8, which is a welding robot or an automatic welding machine. For example, a submerged arc welding device can be used to perform efficient welding and corresponding welding detection work. And on the same side of the two drive mechanisms 3, for example Figure 11 A guide rail seat 81 is provided on the left side of the main pipe 61, and a guide rail 82 is provided on the guide rail seat 81. The guide rail 82 is provided along the axial direction of the main pipe 61, so that the welding device 8 can be moved along the guide rail 82 to different axial positions of the corresponding main pipe 61, and the welding device 8 can adopt different degrees of freedom, thereby facilitating the welding of the branch pipe weld. Figure 11 As shown, the welding device 8 can weld a first circumferential weld 611 of the main pipe 61 , a first arc weld 612 between the main pipe 61 and the first branch pipe 62 , and a second arc weld 613 between the main pipe 61 and the second branch pipe 63 .

[0085] The bifurcated pipe welding equipment of this embodiment adopts the above-mentioned rotating device to set up the bifurcated pipe as a whole, so that the axis of the main pipe and the two branch pipes coincide with the first rotation center line 71, the second rotation center line 72 and the third rotation center line 73, that is, the first fulcrum 11 is connected to the rotating shaft 331 of the driving mechanism 3, so that the bifurcated pipe as a whole can be rotated around the first rotation center line 71, and then the weld seam related to the main pipe can be rotated around the first rotation center line 71, so that the welding device 8 can weld the weld seam related to the rotating main pipe; similarly, it is also possible to make the rotating shaft 331 of the driving mechanism 3 rotate around the first rotation center line 71. The shaft 331 is connected to the second fulcrum 12 or the third fulcrum 13, so that the branch pipe as a whole rotates around the second rotation center line 72 or the third rotation center line 73, and then the relevant welds of the two branch pipes can rotate around the corresponding rotation center line, so that the welding device 8 can weld the relevant welds of the rotating branch pipes, that is, the installation of the branch pipe and the vertical rotation movement are realized through mechanical devices such as the rotating device and the driving mechanism 3, and at the same time, efficient automatic welding of the internal welds and external welds of the branch pipe is realized. Compared with manual welding, its welding efficiency is higher and the labor intensity is low.

[0086] Example 3

[0087] This embodiment provides a bifurcated pipe welding method, which uses the bifurcated pipe welding equipment described in Example 2 to weld the weld seam of the bifurcated pipe 6, including the following steps:

[0088] S1, spot weld the weld of the bifurcated pipe 6 to form the bifurcated pipe 6 as a whole and support it on the rotary device, such as Figure 7-10 As shown, the axis of the main pipe 61 of the bifurcated pipe 6 coincides with the first rotation centerline 71, the axis of the first branch pipe 62 of the bifurcated pipe 6 coincides with the second rotation centerline 72, and the axis of the second branch pipe 63 of the bifurcated pipe 6 coincides with the third rotation centerline 73;

[0089] S2. The branch pipe 6 rotates as a whole along the first rotation centerline 71, and the welding device 8 welds the first circumferential weld 611 of the main pipe 61; the branch pipe 6 rotates as a whole along the second rotation centerline 72, and the welding device 8 welds the second circumferential weld 621 of the first branch pipe 62; the branch pipe 6 rotates as a whole along the third rotation centerline 73, and the welding device 8 welds the third circumferential weld 631 of the second branch pipe 63. The welding device 8 can weld both internal and external welds. During the welding process of the branch pipe as a whole, the weld quality can be inspected online, or quality inspection can be performed after welding is completed. The branch pipe welds can be welded using a submerged arc automatic welding process, using single-wire, dual-wire, or multi-wire methods. The welding device 8 can be a dedicated automatic welding machine or a welding robot. If submerged arc welding equipment is used, efficient welding and corresponding welding inspection can be performed.

[0090] In step S2, it can also include welding the first arc weld 612 between the main pipe 61 and the first branch pipe 62, 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; the branch pipe 6 as a whole rotates along the first rotation center line 71 or along the second rotation center line 72, and the first arc weld 612 is welded by the welding device 8; the branch pipe 6 as a whole rotates along the first rotation center line 71 or along the third rotation center line 73, and the second arc weld 613 is welded by the welding device 8; the branch pipe 6 as a whole rotates along the second rotation center line 72 or along the third rotation center line 73, and the third arc weld 623 is welded by the welding device 8.

[0091] Specifically, step S2 includes the following steps:

[0092] S21, controlling the entire bifurcated pipe 6 to rotate along any one of the first rotation centerline 71, the second rotation centerline 72, and the third rotation centerline 73 by the driving mechanism 3, and welding the corresponding weld by the welding device 8;

[0093] S22, stop the rotation of the bifurcated pipe 6 along the current rotation center line and remove the connection between the drive mechanism 3 and the rotation device, then horizontally rotate the bifurcated pipe 6 so that the other rotation center line is rotated to be aligned with the drive mechanism 3 and connected;

[0094] S23, controlling the entire fork pipe 6 to rotate along the current rotation centerline by the driving mechanism 3, and welding the corresponding weld by the welding device 8;

[0095] S24, repeat steps S22 and S23 until the welds of the branch pipe 6 that need to be welded are completed.

[0096] By adopting the fork pipe welding method of the present application, the weld of the fork pipe 6 is spot welded to form the fork pipe 6 as a whole, so that the fork pipe 6 can rotate as a whole around the rotation center line; and by rotating the fork 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 fork 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 63 can be quickly welded by the welding device 8. 62 and the third arc weld 623 between the first branch pipe 62 and the second branch pipe 63; by rotating the fork 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; it can improve the welding speed of the main pipe of the fork pipe, the circumferential weld of the branch pipe, the first arc weld 612, the second arc weld 613 and the third arc weld 623, and reduce the labor intensity. After the welding of the weld corresponding to the current rotation center line is completed, the rotary device and the branch pipe are lowered as a whole by the lifting part 32, and the connection between the driving mechanism 3 and the current fulcrum of the rotary device is removed, so that the branch pipe and the rotary device can be driven to rotate as a whole in cooperation with the horizontal rotation device 4, so that the fulcrum corresponding to the other rotation center line of the rotary device can be aligned with the driving mechanism 3 and connected. After the connection, the rotary device and the branch pipe are raised as a whole by the lifting part 32, and the horizontal rotation device 4 is removed from under the branch pipe by the track 5. Figure 10 As shown, the vertical rotation of the bifurcated pipe is avoided from being restricted, and the weld corresponding to the other rotation center line can be welded.

[0097] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rotary device, characterized in that: The invention comprises at least two first fulcrums (11), at least two second fulcrums (12) and at least two third fulcrums (13), wherein the first fulcrums (11) form a first rotation center line (71), the second fulcrums (12) form a second rotation center line (72), and the third fulcrums (13) form a third rotation center line (73); 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) intersect, 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); The rotating device comprises a first bracket (1) and a second bracket (2), wherein the first bracket (1) and the second bracket (2) are arranged at intervals along the transverse direction of the rotating device, and the first bracket (1) and the second bracket (2) are arranged opposite to each other; The first bracket (1) has radial support about the first rotation centerline (71), the first support point (11) is located in the middle of the first bracket (1), and the second support point (12) and the third support point (13) are located on both sides of the first support point (11); The second bracket (2) comprises a connecting portion (21) located in the middle and a first sub-bracket (23) and a second sub-bracket (22) located on both sides, the first sub-bracket (23) having radial support about the third rotation centerline (73), the second sub-bracket (22) having radial support about the second rotation centerline (72), the first sub-bracket (23) and the second sub-bracket (22) being connected via the connecting portion (21), the connecting portion (21) being provided with the first fulcrum (11), and the first sub-bracket (23) and the second sub-bracket (22) being provided with the third fulcrum (13) and the second fulcrum (12) respectively.

2. The rotary device according to claim 1, characterized in that: The first bracket (1) comprises a plurality of first supports (101) and first keels (102) arranged radially along the first rotation center line (71), one end of all the first supports (101) converges on the first rotation center line (71) to form a cross-shaped structure or an asterisk-shaped structure, one end of the first keel (102) is connected to the end of the first support (101) away from the first rotation center line (71), and the other end converges on the first rotation center line (71) and is provided with the first fulcrum (11), and the first fulcrum (11) is located on the side of the first support (101) away from the second bracket (2); The first sub-bracket (23) includes a plurality of third supports (231) and third keels (232) arranged radially along the third rotation center line (73), one end of all the third supports (231) converges on the third rotation center line (73) to form a cross-shaped structure, one end of the third keel (232) is connected to one end of the corresponding third support (231) away from the third rotation center line (73), and the other end converges on the third rotation center line (73) and is provided with the third fulcrum (13), and the third fulcrum (13) is located on the side of the third support (231) away from the first bracket (1); The second sub-bracket (22) comprises a plurality of second supports (221) and second keels (222) arranged radially along the second rotation center line (72), one end of all the second supports (221) converges on the second rotation center line (72) to form a cross-shaped structure, one end of the second keel (222) is connected to the end of the corresponding second support (221) away from the second rotation center line (72), and the other end converges on the second rotation center line (72) and is provided with a second fulcrum (12), and the second fulcrum (12) is located on the side of the second support (221) away from the first bracket (1).

3. The rotary device according to any one of claims 1-2, characterized in that: The first rotation centerline (71) coincides with the axis of the main pipe (61) of the bifurcated pipe (6); the second rotation centerline (72) coincides with the axis of the first branch pipe (62) of the bifurcated pipe (6); and the third rotation centerline (73) coincides with the axis of the second branch pipe (63) of the bifurcated pipe (6).

4. A bifurcated pipe welding device, characterized in that: The rotary device comprises any one of claims 1 to 3, and further comprises a driving mechanism (3), wherein a rotating shaft (331) of the driving mechanism (3) is used to connect the first fulcrum (11), the second fulcrum (12) or the third fulcrum (13) of the rotary device.

5. The bifurcated pipe welding equipment according to claim 4, characterized in that: The rotary device comprises two first fulcrums (11), two second fulcrums (12) and two third fulcrums (13), and two driving mechanisms (3) are provided. The rotating 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).

6. The bifurcated pipe welding equipment according to claim 5, characterized in that: The driving mechanism (3) comprises a fixed portion (31), a lifting portion (32) and a rotating portion (33); the lifting portion (32) is fixed to the fixed portion (31); the lifting portion (32) can drive the rotating portion (33) to move up and down; and the rotating portion (33) is provided with the rotating shaft (331).

7. The bifurcated pipe welding equipment according to any one of claims 4 to 6, characterized in that: The horizontal rotating device (4) comprises a support plate (41) and a rotating bracket (42) located directly above the support plate (41), and the rotating bracket (42) is capable of rotating on the support plate (41).

8. The bifurcated pipe welding equipment according to claim 7, characterized in that: It comprises a track (5), and the support plate (41) is capable of moving along the track (5).

9. The bifurcated pipe welding equipment according to claim 8, characterized in that: The top of the track (5) and the bottom of the support plate (41) are slidably connected by a guide rail pair. Only one end of the track (5) is provided with a limiting structure (51), and the limiting structure (51) can limit the passage of the horizontal rotation device (4).

10. The bifurcated pipe welding equipment according to any one of claims 4 to 6, characterized in that: It also includes a welding device (8), which is a welding robot or an automatic welding machine.

11. A bifurcated pipe welding method, characterized in that: The method of welding the weld seam of a bifurcated pipe (6) using the bifurcated pipe welding device as claimed in any one of claims 4 to 10 comprises the following steps: S1. Spot-welding the weld seam of the bifurcated pipe (6) to form the bifurcated pipe (6) as a whole and supporting it on the rotary device so that the axis of the main pipe (61) of the bifurcated pipe (6) coincides with the first rotary centerline (71), the axis of the first branch pipe (62) of the bifurcated pipe (6) coincides with the second rotary centerline (72), and the axis of the second branch pipe (63) of the bifurcated pipe (6) coincides with the third rotary centerline (73); S2, the branch pipe (6) is rotated as a whole along the first rotation center line (71), and the first circumferential weld (611) of the main pipe (61) is welded by the welding device (8); the branch pipe (6) is rotated as a whole 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 rotated as a whole 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).

12. The bifurcated pipe welding method according to claim 11, characterized in that: In step S2, the method further includes welding a first arc weld (612) between the main pipe (61) and the first branch pipe (62), a second arc weld (613) between the main pipe (61) and the second branch pipe (63), and a third arc weld (623) between the first branch pipe (62) and the second branch pipe (63); The branch pipe (6) as a whole rotates along the first rotation center line (71) or along the second rotation center line (72), and a first arc weld (612) is welded by the welding device (8); the branch pipe (6) as a whole rotates along the first rotation center line (71) or along the third rotation center line (73), and a second arc weld (613) is welded by the welding device (8); the branch pipe (6) as a whole rotates along the second rotation center line (72) or along the third rotation center line (73), and a third arc weld (623) is welded by the welding device (8).

13. The bifurcated pipe welding method according to any one of claims 11-12, characterized in that: The step S2 comprises the following steps: S21, controlling the entire fork pipe (6) to rotate along any one of the first rotation center line (71), the second rotation center line (72), and the third rotation center line (73) through the driving mechanism (3), and welding the corresponding weld seam through the welding device (8); S22, stopping the rotation of the fork pipe (6) along the current rotation center line and removing the connection between the drive mechanism (3) and the rotation device, and then horizontally rotating the fork pipe (6) so that the other rotation center line is rotated to be aligned with the drive mechanism (3) and a connection is formed; S23, controlling the entire fork pipe (6) to rotate along the current rotation center line through the driving mechanism (3), and welding the corresponding weld seam through the welding device (8); S24, repeat steps S22 and S23 until the welds of the branch pipe (6) that need to be welded are completed.

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