Welding equipment for directly-buried steam thermal insulation pipe joint

Abstract

The invention discloses a direct burial steam thermal insulation pipe joint welding device, and relates to the technical field of pipeline welding equipment, the direct burial steam thermal insulation pipe joint welding device comprises a first side butt joint support and a second side butt joint support, and when the first side butt joint support and the second side butt joint support are in butt joint, a containing space capable of containing a thermal insulation pipe joint is formed. The first side butt joint support is provided with a rotatable first guide strip, the second side butt joint support is provided with two second guide strips rotating synchronously with the first guide strip, the two second guide strips are located in front of and behind the first guide strip respectively, and the upper end and the lower end of the first guide strip are each provided with an inner connecting base extending to the inner side of the first side butt joint support. An electric arc welding machine base and a visual inspection camera are arranged on the two inner connecting bases respectively. The first side butt joint support and the second side butt joint support have the beneficial effects of being convenient to butt joint and disassemble and can be rapidly positioned to the joint of the two steam heat preservation pipes, when the first side butt joint support and the second side butt joint support are in butt joint, a containing space capable of containing the heat preservation pipe joint is formed, and the device is suitable for the construction site of the directly-buried steam heat preservation pipes.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline welding equipment, and in particular to a direct-buried steam insulation pipe joint welding device. Background Art

[0002] Direct buried steam insulated pipes are mostly used in the fields of heating, cooling or industrial pipelines. During the on-site direct buried laying of pipelines, the interfaces of the pipelines need to be welded to achieve the purpose of butt jointing the pipelines. Common arc welding methods include manual arc welding and gas shielded welding, which are relatively low in cost, popular in equipment, and suitable for on-site construction. Plasma arc welding is a more advanced process with high energy density, fast welding speed and small deformation, but the equipment is expensive and has high technical requirements for operators. It may be more common in factory prefabrication. During the on-site installation of pipelines, arc welding, which is flexible and adaptable, is mostly used.

[0003] In the prior art, the welding methods used in the on-site construction of steam insulation pipes mostly require the use of a clamp to position the pipe interface, and then the construction personnel manually operate the welding equipment to perform welding operations on the pipe interface. During the operation, the pipe interface needs to be completely welded along a circular trajectory. Since the pipe interface has been clamped, and the construction environment is mostly in the construction pit opened for the buried pipe, the manual welding process is easily restricted by the construction environment. Multiple operations are required to complete the welding of the pipe interface, which results in prolonged operation time and the operation quality is easily affected. After the welding operation is completed, it is not convenient to perform inspection operations on the welding quality. Therefore, the present invention provides a direct-buried steam insulation pipe joint welding device to meet the needs. Summary of the invention

[0004] In view of the above problems, the present invention provides a direct-buried steam insulation pipe joint welding device.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a direct-buried steam insulated pipe joint welding device, comprising a side butt support one and a side butt support two. When the side butt support one and the side butt support two are connected to each other, a placement space that can accommodate the insulated pipe joint is formed.

[0006] The side docking support 1 is provided with a rotatable first guide bar, and the side docking support 2 is provided with two second guide bars that rotate synchronously with the first guide bar, and the two second guide bars are respectively located in front of and behind the first guide bar, and the first guide bar and the second guide bar have an overlapping area in a front view angle. The upper and lower ends of the first guide bar are provided with inner seats extending to the inner side of the side docking support 1, and the two inner seats are respectively provided with an arc welding machine base and a visual detection camera, and the two inner seats are connected to the second guide bar through a connection structure. With the rotation of the first guide bar and the second guide bar, the arc welding machine base and the visual detection camera can move synchronously along a circular trajectory.

[0007] Furthermore, each of the second guide bars is provided with a first drive gear meshing with its external teeth, and a second drive gear coaxially distributed therewith is provided between the two first drive gears, and the second drive gear meshes with the external teeth of the first guide bar. When the first drive gear meshes with the second guide bar and rotates along a circular trajectory, the first guide bar and the second guide bar move synchronously until the external teeth of the first guide bar mesh with the second drive gear.

[0008] The first driving gear and the second driving gear are both connected via the same power shaft, and the power shaft is provided with an electric driving device that can drive the first driving gear and the second driving gear to rotate.

[0009] Furthermore, the upper and lower ends of the side docking support 1 form arc-shaped protrusions along a circular trajectory, the upper and lower ends of the first guide bar are respectively located on the surfaces of the two protrusions, and the upper and lower ends of the side docking support 2 are provided with recessed portions that can accommodate the protrusions. When the side docking support 1 and the side docking support 2 are docked, the protrusions distributed from top to bottom are connected to the recessed portions.

[0010] Furthermore, the connection structure includes extension plates arranged on both sides of the inner seat, and a group of guide gears and a synchronous rotating wheel coaxially distributed with the guide gears are provided on the side of the extension plate away from the inner seat. The two groups of guide gears located on both sides of the inner seat are meshed and connected with follower racks, and the two groups of follower racks are arranged from top to bottom along the diameter direction of the guide gears.

[0011] One end of the follower rack is slidably mounted on the extension plate, and the other end is provided with a locking rod. Two intercepting plates are provided at the upper and lower ends of the second guide bar. When the two groups of guide gears located on both sides of the inner seat rotate in the same direction, the two groups of follower racks and the locking rod rotate in opposite directions until the two groups of locking rods pass through the two intercepting plates respectively.

[0012] Furthermore, the connection structure also includes a synchronous belt connecting the two synchronous wheels located on both sides of the extension plate, and the guide gear and the synchronous wheels located on the same side of the inner seat are connected through the same power shaft, and one of the two power shafts is equipped with an electric drive device 2.

[0013] Furthermore, two docking frames symmetrically distributed from front to back are fixed in the side docking support one and the side docking support two, and multiple limiting roller groups equidistantly arranged along an arc track are fixed in the two docking frames, and the gap between the two docking frames forms a space for accommodating the passage of the internal docking seat. When the structure of the two pipes is placed in the placement space formed by the side docking support one and the side docking support two, the limiting roller groups respectively resist the two pipes.

[0014] Furthermore, a movable seat 1 and a movable seat 2 are fixed to the outside of the side docking support 1 and the side docking support 2 respectively, and universal wheels are installed at the bottom of the movable seat 1 and the movable seat 2. The first driving gear, the second driving gear, the driving shaft connecting the two, and the electric driving device 2 connected to the power shaft are all installed on the movable seat 2.

[0015] Furthermore, a first guide rail matched with the first guide bar and two second guide rails matched with the second guide bar are fixed on the side docking support one and the side docking support two. When the side docking support one and the side docking support two are connected to each other, the first guide rail and the second guide rail located on the outside of the side docking support one and the side docking support two are spliced ​​into a circular track that can accommodate the sliding of the first guide bar and the second guide bar.

[0016] In summary, the technical effects and advantages of the present invention are as follows: 1. The side docking support 1 and the side docking support 2 in the present invention have the advantages of portable docking and disassembly, and can be quickly positioned at the joint of two steam insulation pipes. When the side docking support 1 and the side docking support 2 are connected to each other, a placement space for accommodating the insulation pipe joints is formed, which is suitable for the construction site of direct-buried steam insulation pipes.

[0017] 2. The present invention combines the first guide bar, the second guide bar, the arc welding machine base and the visual inspection camera. Under the premise that the side docking support 1 and the side docking support 2 can flexibly perform docking and separation operations, the arc welding machine base and the visual inspection camera can respectively perform welding and visual inspection operations on the steam insulation pipe along a circular trajectory, thereby improving the comprehensiveness of welding and visual inspection operations. The efficiency of the welding operation is improved, and the quality of the welding operation is easy to observe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the structure from the second viewing angle of the present invention.

[0021] Figure 3 It is a schematic diagram of the connection structure between the side docking support 1 and the first guide strip of the present invention.

[0022] Figure 4 For the present invention Figure 3 Enlarged structural diagram at A in the middle.

[0023] Figure 5 For the present invention Figure 3 Enlarged structural diagram at B in the middle.

[0024] Figure 6 It is a schematic diagram of the connection structure between the docking bracket and the movable seat of the present invention.

[0025] Figure 7 It is a schematic diagram of the connection structure between the second side docking support and the second guide bar of the present invention.

[0026] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point C in the middle.

[0027] Fig. 9 It is a schematic diagram of the connection structure between the side docking support 2 and the movable seat 2 of the present invention.

[0028] Fig.10 It is a schematic diagram of the connection between the internal connection seat, the arc welding machine base and the connection structure of the present invention.

[0029] Fig.11 It is a schematic diagram of the internal socket, visual detection camera and connection structure of the present invention.

[0030] In the figure: 1. Side docking support 1; 2. Side docking support 2; 3. First guide bar; 31. Internal seat; 32. Arc welding machine base; 33. Visual inspection camera; 4. Second guide bar; 41. Interceptor plate; 5. Moving seat 1; 6. Moving seat 2; 7. First drive gear; 8. Second drive gear; 9. Docking frame; 10. Limit roller set; 11. First guide rail; 12. Second guide rail; 13. Extension plate; 14. Guide gear; 15. Synchronous wheel; 16. Follower rack; 17. Positioning rod; 18. Synchronous belt. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1: Reference Figure 1 , Figure 2 The illustrated direct-buried steam insulation pipe joint welding device comprises a side butt support 1 and a side butt support 2. During the actual use of the device, when the joints of two steam insulation pipes are relative to each other, the side butt support 1 and the side butt support 2 can be controlled to be located on both sides of the butt joints of the two steam insulation pipes to perform butt joint operations. When the side butt support 1 and the side butt support 2 are relative to each other, a placement space for accommodating the insulation pipe joint is formed, and the welding operation of the steam insulation pipe joint can be performed in the space. The side butt support 1 and the side butt support 2 have the advantages of portable butt jointing and disassembly, and can be quickly positioned at the joint of two steam insulation pipes, and are suitable for the construction site of direct-buried steam insulation pipes.

[0033] In the present invention, a rotatable first guide bar 3 is provided on the side docking bracket 1, and two second guide bars 4 that rotate synchronously with the first guide bar 3 are provided on the side docking bracket 2. The two second guide bars 4 are respectively located in front of and behind the first guide bar 3. The first guide bar 3 and the second guide bar 4 have an overlapping area in a front view angle, see Figure 1 shown.

[0034] like Figure 1 , Figure 2 As shown, the upper and lower ends of the first guide bar 3 are both provided with inner seats 31 extending to the inner side of the side docking support 1, and the two inner seats 31 are respectively provided with arc welding machine bases 32 and visual inspection cameras 33. When the side docking support 1 and the side docking support 2 are connected to each other, the two inner seats 31 distributed from top to bottom are connected to the second guide bar 4 through the connection structure. With the rotation of the first guide bar 3 and the second guide bar 4, the arc welding machine base 32 and the visual inspection camera 33 can move synchronously along the circular track.

[0035] like Figure 4 , Figure 5 As shown, the arc welding machine base 32 can perform comprehensive welding operations on the joints of the two steam insulation pipes while moving along the circular track until the joints of the two steam insulation pipes are completely connected. During the welding operation, the welding operation can be quickly performed on the positions of the insulation pipe joints that are difficult to operate manually until the welding of the interfaces of the two steam insulation pipes is completed.

[0036] like Figure 4 , Figure 5 As shown, when the welding operation is completed, as the first guide bar 3 and the second guide bar 4 continue to rotate, the visual inspection camera 33 can perform a visual inspection operation on the weld at the steam insulation pipe joint to observe whether the weld quality meets the standards. If it does not meet the standards, a repair welding operation is required.

[0037] In summary, in the present invention, through the combination of the first guide bar 3, the second guide bar 4, the arc welding base 32 and the visual inspection camera 33, without affecting the flexible docking and separation operations of the side docking support 1 and the side docking support 2, when the side docking support 1 and the side docking support 2 are docked, the arc welding base 32 and the visual inspection camera 33 can respectively perform welding and visual inspection operations on the steam insulation pipe along a circular trajectory, thereby improving the comprehensiveness of the welding and visual inspection operations and avoiding omissions. Compared with manual welding operations, the efficiency of welding operations is improved. At the same time, during the welding operation, it is convenient to observe the quality of the welding operation so as to implement the repair welding operation in a timely manner.

[0038] Specifically, Figure 1 , Figure 2 As shown, in order to enable the first guide bar 3 and the second guide bar 4 to rotate smoothly along the circular trajectory after splicing is completed, a first driving gear 7 meshing with its external teeth is provided on the second guide bar 4, and a second driving gear 8 coaxially distributed therewith is also provided between the two first driving gears 7. The second driving gear 8 meshes with the external teeth of the first guide bar 3. When the first driving gear 7 meshes with the second guide bar 4 and rotates along the circular trajectory, the first guide bar 3 and the second guide bar 4 move synchronously. Since the first guide bar 3 and the second guide bar 4 have an overlapping area in a front view angle, when the first guide bar 3 rotates to the moving degree along with the second guide bar 4, the external teeth of the first guide bar 3 mesh with the second driving gear 8.

[0039] At this time, as the first drive gear 7 and the second drive gear 8 continue to rotate, the visual inspection camera 33 can perform continuous visual inspection operations on the weld at the steam insulation pipe joint along a circular trajectory, and transmit the inspection image to the display, so that the staff can observe whether the weld quality meets the standards.

[0040] like Fig. 9 As shown, in order to make the first driving gear 7 and the second driving gear 8 rotate synchronously, the first driving gear 7 and the second driving gear 8 are connected through the same power shaft, and the power shaft is provided with an electric driving device that can drive them to rotate.

[0041] It is worth mentioning that in the present invention, both the upper and lower ends of the side docking support 1 form arc-shaped protrusions along the circumferential trajectory, the upper and lower ends of the first guide strip 3 are respectively located on the surfaces of the two protrusions, and both the upper and lower ends of the side docking support 2 are provided with recesses that can accommodate the protrusions. When the side docking support 1 and the side docking support 2 are docked, the protrusions distributed from top to bottom are in contact with the recesses. The purpose of the combination of the protrusions and the recesses is to enable the arc welding machine base 32 and the visual inspection camera 33 to be accurately distributed to the upper and lower parts of the steam insulation pipe joint during the process of the side docking support 1 moving and docking with the side docking support 2, thereby ensuring the accuracy of the position distribution of the arc welding machine base 32 and the visual inspection camera 33, see Figure 3 shown.

[0042] Embodiment 2: Based on embodiment 1, Figure 8 , Fig.10 and Fig.11 As shown, the connection structure includes an extension plate 13 arranged on both sides of the inner seat 31, and a group of guide gears 14 and a synchronous rotating wheel 15 coaxially distributed with the guide gears 14 are provided on the side of the extension plate 13 away from the inner seat 31. The two groups of guide gears 14 located on both sides of the inner seat 31 are meshed and connected with follower racks 16, and the two groups of follower racks 16 are arranged from top to bottom along the diameter direction of the guide gears 14.

[0043] like Fig.10 , Fig.11 As shown, one end of the follower rack 16 is slidably mounted on the extension plate 13, and the other end is provided with a locking rod 17. Two intercepting plates 41 are provided at the upper and lower ends of the second guide bar 4. When the two groups of guide gears 14 located on both sides of the inner seat 31 rotate in the same direction, the two groups of follower racks 16 and the locking rod 17 rotate in opposite directions until the two groups of locking rods 17 pass through the two intercepting plates 41 respectively.

[0044] After the two groups of locking rods 17 pass through the two intercepting plates 41, the positions of the two intercepting plates 41 can be locked to achieve the purpose of connecting the inner seat 31 with the front and rear second guide strips 4, thereby improving the tightness of the connection between the first guide strip 3 and the second guide strip 4. Under the action of the connection structure, the front and rear second guide strips 4 drive the first guide strip 3, the inner seat 31, the arc welding machine base 32 and the visual inspection camera 33 to move smoothly.

[0045] Specifically, Fig.10 , Fig.11As shown, the connection structure also includes a synchronous belt 18 connecting the two synchronous wheels 15 located on both sides of the extension plate 13, and the guide gear 14 and the synchronous wheel 15 located on the same side of the inner seat 31 are connected through the same power shaft, and one of the two power shafts is installed with an electric drive device 2. When the electric drive device 2 drives the synchronous wheel 15 on one side of the inner seat 31 to rotate, under the connection action of the synchronous belt 18, the synchronous wheels 15 and the guide gear 14 on both sides of the inner seat 31 can be synchronously rotated in the same direction, so as to achieve the purpose of driving the two sets of follower racks 16 and the positioning rod 17 to rotate in opposite directions respectively, and the interception plate 41 distributed in front and rear of the inner seat 31 can be quickly positioned.

[0046] When the two inner seats 31 distributed from top to bottom are connected to the second guide strip 4 through the connecting structure, the side docking support 1 1 and the side docking support 2 2 can be tightly connected at the same time, reducing the docking error and improving the accuracy of the docking between the side docking support 1 1 and the side docking support 2 2.

[0047] like Figure 6 , Fig. 9 As shown, in the present invention, two docking frames 9 symmetrically distributed from front to back are fixed in the side docking bracket 1 and the side docking bracket 2, and multiple limit roller groups 10 equidistantly arranged along the arc track are fixed in the two docking frames 9, and the gap between the two docking frames 9 forms a space that can accommodate the inner seat 31 to pass through. When the structure of the two pipes is placed in the placement space formed by the side docking bracket 1 and the side docking bracket 2, the limit roller group 10 is respectively against the two pipes. The two inner seats 31 distributed from top to bottom can respectively carry the arc welding machine base 32 and the visual inspection camera 33 and move outside the pipe interface.

[0048] like Figure 3 , Figure 7 As shown, in order to maintain the stability of the side docking bracket 1 and the side docking bracket 2, and facilitate the movement of the side docking bracket 1 and the side docking bracket 2 at the construction site, a moving seat 1 and a moving seat 2 are fixed to the side docking bracket 1 and the side docking bracket 2, respectively, and universal wheels are installed at the bottom of the moving seat 1 and the moving seat 2. The combination of the moving seat 1 and the moving seat 2 can facilitate the rapid and stable operation of the side docking bracket 1 and the side docking bracket 2, and implement the docking and separation operations of the two. Figure 6 , Fig. 9 As shown, in order to maintain the stability of the first driving gear 7, the second driving gear 8, the driving shaft connecting the two, and the electric driving device 2 connected to the power shaft, in the present invention, the above components are all installed on the movable seat 2 6.

[0049] like Figure 6 , Fig. 9As shown, in the present invention, a first guide rail 11 matched with the first guide bar 3 and two second guide rails 12 matched with the second guide bar 4 are fixed on the side docking support 1 1 and the side docking support 2 2. When the side docking support 1 1 and the side docking support 2 2 are connected to each other, the first guide rail 11 and the second guide rail 12 located on the outer sides of the side docking support 1 1 and the side docking support 2 2 are spliced ​​into a circular track that can accommodate the sliding of the first guide bar 3 and the second guide bar 4.

[0050] The combined setting of the first guide bar 3 and the second guide bar 4 has a limiting effect on the first guide bar 3 and the second guide bar 4, ensuring the tightness of the connection between the first guide bar 3 and the second guide bar 4, avoiding the displacement of the first guide bar 3 and the second guide bar 4 during rotation, and further ensuring the stability of the first guide bar 3 and the second guide bar 4 when rotating along a circular trajectory.

[0051] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A direct buried steam insulation pipe joint welding device, characterized in that: It comprises a side butt support 1 (1) and a side butt support 2 (2). When the side butt support 1 (1) and the side butt support 2 (2) are connected to each other, a placement space capable of accommodating a thermal insulation pipe joint is formed; The side docking support (1) is provided with a rotatable first guide bar (3), and the side docking support (2) is provided with two second guide bars (4) that rotate synchronously with the first guide bar (3), the two second guide bars (4) are respectively located in front of and behind the first guide bar (3), and the first guide bar (3) and the second guide bar (4) have an overlapping area in a front view; the upper and lower ends of the first guide bar (3) are both provided with inner seats (31) extending to the inner side of the side docking support (1), the two inner seats (31) are respectively provided with an arc welding machine base (32) and a visual detection camera (33), and the two inner seats (31) are connected to the second guide bar (4) through a connection structure; as the first guide bar (3) and the second guide bar (4) rotate, the arc welding machine base (32) and the visual detection camera (33) can move synchronously along a circular trajectory.

2. The direct buried steam insulation pipe joint welding equipment according to claim 1 is characterized in that: Each of the second guide bars (4) is provided with a first drive gear (7) meshing with its external teeth, and a second drive gear (8) coaxially distributed therewith is provided between the two first drive gears (7), and the second drive gear (8) meshes with the external teeth of the first guide bar (3), and when the first drive gear (7) meshes with the second guide bar (4) and rotates along a circular trajectory, the first guide bar (3) and the second guide bar (4) move synchronously until the external teeth of the first guide bar (3) mesh with the second drive gear (8); The first driving gear (7) and the second driving gear (8) are both connected via a common power shaft, and the power shaft is provided with an electric driving device capable of driving the first driving gear (7) and the second driving gear (8) to rotate.

3. The direct buried steam insulation pipe joint welding equipment according to claim 2 is characterized in that: The upper and lower ends of the side docking support (1) form arc-shaped protrusions along a circular trajectory, the upper and lower ends of the first guide strip (3) are respectively located on the surfaces of the two protrusions, and the upper and lower ends of the side docking support (2) are provided with recesses capable of accommodating the protrusions. When the side docking support (1) and the side docking support (2) are docked, the protrusions distributed from top to bottom are in contact with the recesses.

4. The direct buried steam insulation pipe joint welding equipment according to claim 1 is characterized in that: The connection structure comprises an extension plate (13) arranged on both sides of the inner seat (31); a group of guide gears (14) and a synchronous rotating wheel (15) coaxially distributed with the guide gears (14) are arranged on one side of the extension plate (13) away from the inner seat (31); the two groups of guide gears (14) located on both sides of the inner seat (31) are meshedly connected with follower racks (16); the two groups of follower racks (16) are arranged from top to bottom along the diameter direction of the guide gears (14); One end of the follower rack (16) is slidably mounted on the extension plate (13), and the other end is provided with a locking rod (17). The upper and lower ends of the second guide bar (4) are provided with two interception plates (41). When the two sets of guide gears (14) located on both sides of the inner seat (31) rotate in the same direction, the two sets of follower racks (16) and the locking rod (17) rotate in opposite directions respectively until the two sets of locking rods (17) pass through the two interception plates (41) respectively.

5. The direct buried steam insulation pipe joint welding equipment according to claim 4 is characterized in that: The connection structure also includes a synchronous belt (18) connecting two synchronous rotating wheels (15) located on both sides of the extension plate (13); the guide gear (14) and the synchronous rotating wheels (15) located on the same side of the inner seat (31) are connected through the same power shaft, and one of the two power shafts is equipped with an electric drive device 2.

6. The direct buried steam insulation pipe joint welding equipment according to claim 1 is characterized in that: Two docking frames (9) symmetrically distributed from front to back are fixed in the side docking support one (1) and the side docking support two (2), and a plurality of limit roller groups (10) equidistantly arranged along an arc track are fixed in the two docking frames (9), and a gap between the two docking frames (9) forms a space for accommodating the inner connection seat (31) to pass through. When the structure of the two pipes is placed in the placement space formed by the side docking support one (1) and the side docking support two (2), the limit roller groups (10) respectively abut against the two pipes.

7. The direct buried steam insulation pipe joint welding equipment according to claim 2 is characterized in that: A moving seat 1 (5) and a moving seat 2 (6) are fixed to the outside of the side docking bracket 1 (1) and the side docking bracket 2 (2), respectively. Universal wheels are installed at the bottom ends of the moving seat 1 (5) and the moving seat 2 (6). The first driving gear (7), the second driving gear (8), the driving shaft connecting the two, and the electric driving device 2 connected to the power shaft are all installed on the moving seat 2 (6).

8. The direct buried steam insulation pipe joint welding equipment according to claim 1 is characterized in that: A first guide rail (11) matched with the first guide bar (3) and two second guide rails (12) matched with the second guide bar (4) are fixed on the side docking support 1 (1) and the side docking support 2 (2). When the side docking support 1 (1) and the side docking support 2 (2) are connected to each other, the first guide rail (11) and the second guide rail (12) located outside the side docking support 1 (1) and the side docking support 2 (2) are spliced ​​into a circular track capable of accommodating the sliding movement of the first guide bar (3) and the second guide bar (4).

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