A space pipeline automatic welding device

Abstract

The present invention relates to the technical field of welding devices, and in particular to an automatic welding device for space pipelines. An automatic welding device for space pipelines includes a main semi-ring track, a calibration mechanism and a welding mechanism. The welding wire rotates around the weld at a uniform speed for one circle, and the welding wire moves toward the weld to weld two pipelines. The calibration mechanism imposes constraints on the two pipelines and connects them through calibration springs of the same specification, so that the stress between the two pipelines is the same each time they are welded. While the two pipelines are concentrically arranged, the width of the weld between the two pipelines is the same at all locations to improve the welding quality. The present invention provides an automatic welding device for space pipelines to solve the problem that when the existing welding device is used to weld the pipeline, two adjacent pipelines may not be concentric, and the width of each weld may be different, affecting the welding quality.

Description

Technical Field

[0001] The invention relates to the technical field of welding devices, and in particular to an automatic welding device for space pipelines. Background Art

[0002] Welding is a manufacturing process and technology that joins metals by heating. Spatial pipelines are pipelines arranged in three-dimensional space and are widely used in industry, construction and mechanical equipment. Its design and installation process needs to fully consider factors such as material selection, size matching, drainage and ventilation to ensure construction efficiency and safety. Spatial pipelines are generally small in diameter, but they are arranged in large quantities. Professionals are required to carry out spatial design and layout to ensure that interference is avoided, the layout is reasonable, the appearance is neat and easy to transport. However, most industrial enterprises still use manual welding technology. Manual welding usually needs to temporarily stop welding after welding a part of the pipe mouth circumferential seam, and the welding can only be continued after the staff changes to another working position, which will cause the weld to be uneven, inconsistent and discontinuous.

[0003] For example, the Chinese invention patent with the authorization announcement number CN108637431B provides an automatic pipe welding machine in all positions, which completes the welding of two adjacent pipes by making a circular motion on a circular guide rail with a welding gun. However, there will inevitably be deviations when manually connecting pipes, and two adjacent pipes may not be concentric. The stress at each welding point is also different, resulting in different widths of each weld, and different widths of multiple welds in the entire spatial pipeline, which affects the welding quality and makes the welds easy to break. Summary of the invention

[0004] The invention provides a spatial pipeline automatic welding device to solve the problem that when the existing welding device is used to weld pipelines, two adjacent pipelines may not be concentric and the width of each weld may be different, which affects the welding quality.

[0005] The present invention discloses a space pipeline automatic welding device adopts the following technical scheme: the space pipeline automatic welding device comprises a main body semi-ring track, a calibration mechanism and a welding mechanism. The main body semi-ring track is arranged between two adjacent pipelines, a first fixing block is fixedly arranged in the middle of the main body semi-ring track, a first through hole is provided on the first fixing block, and the first through hole is arranged along the axial direction of the pipeline. A first annular groove is provided in the main body semi-ring track, and the first annular groove and the pipeline are arranged concentrically.

[0006] The calibration mechanism includes a bidirectional screw, two constraint half rings, two spring assemblies and two adjustment assemblies. The constraint half ring and the pipeline are concentrically arranged, and each constraint half ring is slidably arranged on a pipeline. The bidirectional screw is arranged along the axial direction of the pipeline, the middle part of the bidirectional screw is rotatably arranged in the first through hole, and the two ends of the bidirectional screw are respectively rotatably connected with the two constraint half rings.

[0007] Two spring assemblies are respectively arranged on both sides of the main body semi-ring track, each spring assembly includes a plurality of calibration springs, the plurality of calibration springs are distributed along the circumference of the pipeline, the calibration springs are arranged along the axial direction of the pipeline, one end of each calibration spring is fixedly connected to a constraint semi-ring, and the other end of each calibration spring is fixedly connected to the main body semi-ring track. Two adjustment assemblies are respectively arranged at both ends of the bidirectional lead screw, and the adjustment assemblies are used to adjust the distance between the constraint semi-ring and the main body semi-ring track.

[0008] The welding mechanism comprises a half gear ring and a welding wire. The half gear ring is slidably arranged in the first annular groove and can rotate around the circumference of the pipeline. The welding wire is arranged on the half gear ring and is used to weld two pipelines.

[0009] Furthermore, a second fixing block is fixedly arranged in the middle of each constraint half ring, and a second through hole is opened on the second fixing block, and the second through hole is arranged along the axial direction of the pipeline. Each adjustment assembly includes an adjustment ring, which is arranged along the axial direction of the pipeline, and the adjustment ring is slidably arranged in the second through hole, and the outer peripheral wall of the adjustment ring is in frictional contact with the second through hole. The adjustment ring is rotatably arranged on the bidirectional lead screw, and the inner peripheral wall of the adjustment ring is threadedly matched with the bidirectional lead screw.

[0010] Furthermore, each adjustment assembly also includes a reset unit, and each reset unit includes a rotating block and a plurality of reset springs. The rotating block is rotatably sleeved on the bidirectional lead screw, and the rotating block can be rotatably arranged around the axial direction of the bidirectional lead screw on a side of the second fixed block away from the main body semi-ring track. The plurality of reset springs are distributed along the circumference of the bidirectional lead screw, and each reset spring is arranged along the axial direction of the bidirectional lead screw, one end of each reset spring is fixedly connected to the rotating block, and the other end of each reset spring is fixedly connected to the adjustment ring.

[0011] Furthermore, the two adjustment rings are respectively matched with the bidirectional lead screw for helical transmission, and the rotation directions of the two adjustment rings and the bidirectional lead screw are opposite.

[0012] Furthermore, a first gear is fixedly arranged in the middle of the bidirectional lead screw, and the axis of the first gear is arranged along the axial direction of the bidirectional lead screw. The calibration mechanism also includes a first drive assembly, and the first drive assembly includes a calibration motor and a second gear. The second gear is arranged on the first fixed block so as to be rotatable around itself, and the axis of the second gear is arranged along the axial direction of the bidirectional lead screw, and the second gear is meshed with the first gear. The calibration motor is fixedly arranged on the first fixed block, and the output shaft of the calibration motor is fixedly connected to the second gear.

[0013] Furthermore, a mounting opening is respectively provided at both ends of the constraint semi-ring along the circumference of the pipeline, and the mounting opening is communicated with the first ring groove. The welding mechanism also includes two second drive assemblies, which are distributed along the circumference of the pipeline, and the two second drive assemblies are respectively fixedly arranged at both ends of the main semi-ring track. Each second drive assembly includes a welding drive motor and a third gear. The welding drive motor is fixedly arranged on the constraint semi-ring, the third gear is fixedly connected to the output shaft of the welding drive motor, the third gear can rotate around its own axis, the third gear is arranged at the mounting opening, and the third gear is meshed with the half gear ring.

[0014] Furthermore, each constraint half ring is provided with a constraint belt, both ends of the constraint belt are fixedly connected to the constraint half ring, and the constraint belt is wound around a side of the pipeline away from the constraint half ring.

[0015] Furthermore, the space pipeline automatic welding device also includes two plug-in accessory tracks, which are detachably arranged at both ends of the main body semi-ring track along the circumference of the pipeline. A second ring groove is opened in each plug-in accessory track, the second ring groove is connected to the first ring groove, and the half gear ring is slidably arranged in the second ring groove.

[0016] Furthermore, a third through hole is opened in the middle of the main body semi-ring track, the third through hole is arranged along the radial direction of the pipeline, and the welding wire is arranged in the third through hole. The space pipeline automatic welding device also includes a clamping and feeding mechanism, the clamping and feeding mechanism includes an electric-controlled hydraulic rod and a clamping ring, the clamping ring is slidably arranged in the third through hole, and the clamping ring and the welding wire are against each other. The electric-controlled hydraulic rod is fixedly arranged in the third through hole, and the extended end of the electric-controlled hydraulic rod is fixedly connected to the clamping ring.

[0017] Furthermore, a third annular groove is provided on the main body semi-ring track, the third annular groove and the first annular groove are concentrically arranged, and the third annular groove and the first annular groove are connected, and the welding wire passes through the third through hole and the third annular groove in sequence.

[0018] The beneficial effects of the present invention are as follows: an automatic space pipeline welding device of the present invention, through the arranged welding mechanism, allows the welding wire to rotate around the weld at a uniform speed for one circle, and the welding wire moves toward the weld, which is convenient for processing pipeline welding in complex terrain, can adapt to working environments where manual welding is inconvenient, and has high weld quality and a neat and beautiful appearance.

[0019] By setting a calibration mechanism, constraints are imposed on the two pipes, and the two pipes are connected by calibration springs of the same specifications, so that the stress between the two pipes is the same each time they are welded, and the two pipes are set concentrically, so that the width of the weld between the two pipes is the same at all places, so as to improve the welding quality and prevent the problem that the two pipes are easily disengaged due to the non-concentricity of the two pipes and the different widths of the weld between the two pipes. Since the specifications of the calibration springs in the two spring assemblies are the same, when the elastic force of the calibration springs is the same, the length of the calibration springs is also the same, so the structure can also control the width of the weld to be the same each time welding, so as to improve the welding quality of multiple pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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 described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 A schematic structural diagram of a space pipeline automatic welding device provided by an embodiment of the present invention;

[0022] Figure 2 A front view of a space pipeline automatic welding device provided by an embodiment of the present invention;

[0023] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0024] Figure 4 for Figure 2 Sectional view at the middle BB;

[0025] Figure 5 A partial structural schematic diagram of a space pipeline automatic welding device provided in an embodiment of the present invention.

[0026] In the figure: 100, pipeline; 201, main body semi-ring track; 202, plug-in accessory track; 203, constraint semi-ring; 204, constraint belt; 205, bidirectional screw; 206, first gear; 207, calibration motor; 208, rotating block; 209, return spring; 210, adjustment ring; 211, calibration spring; 212, first fixed block; 213, second gear; 214, second fixed block; 215, connecting ring; 301, semi-gear ring; 302, welding wire; 303, third gear; 304, welding drive motor. DETAILED DESCRIPTION

[0027] 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.

[0028] Reference Figures 1 to 5 As shown, an automatic welding device for a space pipeline provided by an embodiment of the present invention includes a main body semi-ring track 201, a calibration mechanism and a welding mechanism. The main body semi-ring track 201 is arranged between two adjacent pipelines 100, and the main body semi-ring track 201 is semi-ring-shaped. The main body semi-ring track 201 and the pipeline 100 are arranged concentrically. A first fixing block 212 is fixedly arranged in the middle of the main body semi-ring track 201, and a first through hole is opened on the first fixing block 212, and the first through hole is arranged along the axial direction of the pipeline 100. A first annular groove is opened in the main body semi-ring track 201, and the first annular groove and the pipeline 100 are arranged concentrically.

[0029] The calibration mechanism includes a bidirectional lead screw 205, two constraint half rings 203, two spring assemblies and two adjustment assemblies. The constraint half ring 203 and the pipe 100 are arranged concentrically, and each constraint half ring 203 is slidably arranged on a pipe 100. The bidirectional lead screw 205 is arranged along the axial direction of the pipe 100, the middle part of the bidirectional lead screw 205 is rotatably arranged in the first through hole, and the two ends of the bidirectional lead screw 205 are rotatably connected to the two constraint half rings 203 respectively.

[0030] Two spring assemblies are respectively arranged on both sides of the main body semi-ring track 201 along the axial direction of the pipeline 100, each spring assembly includes a plurality of calibration springs 211, the plurality of calibration springs 211 are distributed along the circumference of the pipeline 100, the calibration springs 211 are arranged along the axial direction of the pipeline 100, one end of each calibration spring 211 is fixedly connected to a constraint semi-ring 203, and the other end of each calibration spring 211 is fixedly connected to the main body semi-ring track 201. Two adjustment assemblies are respectively arranged at both ends of the bidirectional lead screw 205, and the adjustment assemblies are used to adjust the distance between the constraint semi-ring 203 and the main body semi-ring track 201. In the initial state, each adjustment assembly is offset against a constraint semi-ring 203.

[0031] The welding mechanism includes a half gear ring 301 and a welding wire 302. The half gear ring 301 is slidably disposed in the first annular groove and can rotate around the circumference of the pipe 100. The welding wire 302 is disposed on the half gear ring 301 and is used to weld two pipes 100.

[0032] In this embodiment, the constraint half ring 203 is semi-circular, and a second fixing block 214 is fixedly arranged in the middle of each constraint half ring 203, and a second through hole is opened on the second fixing block 214, and the second through hole is arranged along the axial direction of the pipeline 100. Each adjustment assembly includes an adjustment ring 210, which is arranged along the axial direction of the pipeline 100, and the adjustment ring 210 is slidably arranged in the second through hole, and the outer peripheral wall of the adjustment ring 210 is in friction contact with the second through hole. The adjustment ring 210 is rotatably arranged on the bidirectional lead screw 205, and the inner peripheral wall of the adjustment ring 210 is threadedly matched with the bidirectional lead screw 205.

[0033] When the bidirectional lead screw 205 rotates, the rotation of the bidirectional lead screw 205 will cause the adjustment rings 210 on both sides to move toward the direction close to the main body semi-ring track 201. When the elastic force of the calibration spring 211 under pressure is less than the friction between the adjustment ring 210 and the constraint semi-ring 203, the adjustment ring 210 will drive the constraint semi-ring 203 to move synchronously toward the direction close to the main body semi-ring track 201. At the same time, the pipeline 100 moves synchronously toward the direction close to the main body semi-ring track 201. When the elastic force of the calibration spring 211 is greater than the friction between the adjustment ring 210 and the constraint semi-ring 203, the adjustment ring 210 and the constraint semi-ring 203 slide relative to each other, the constraint semi-ring 203 no longer moves, and the bidirectional lead screw 205 drives the adjustment ring 210 to continue to move.

[0034] In this embodiment, each adjustment assembly further includes a reset unit, and each reset unit includes a rotating block 208 and a plurality of reset springs 209. The rotating block 208 is rotatably sleeved on the bidirectional lead screw 205, and the rotating block 208 can be rotatably arranged around the axial direction of the bidirectional lead screw 205 on the side of the second fixed block 214 away from the main body semi-ring track 201. The plurality of reset springs 209 are distributed along the circumference of the bidirectional lead screw 205, and each reset spring 209 is arranged along the axial direction of the bidirectional lead screw 205, one end of each reset spring 209 is fixedly connected to the rotating block 208, and the other end of each reset spring 209 is fixedly connected to the adjustment ring 210.

[0035] When the adjusting ring 210 and the constraining half ring 203 slide relative to each other, the constraining half ring 203 stops moving, and the bidirectional lead screw 205 drives the adjusting ring 210 to continue to move closer to the main half ring track 201, and the return spring 209 is stretched. When the bidirectional lead screw 205 stops rotating, the return spring 209 returns to its original position, drives the adjusting ring 210 to rotate, and drives the adjusting ring 210 to move away from the main half ring track 201, and when the adjusting ring 210 rotates, it drives the rotating block 208 to rotate synchronously.

[0036] In this embodiment, first spiral grooves with opposite rotation directions are respectively formed at both ends of the bidirectional lead screw 205, and a second spiral groove is formed on the inner peripheral wall of each adjusting ring 210. The second spiral grooves of the two adjusting rings 210 are respectively matched with the first spiral grooves at both ends of the bidirectional lead screw 205. When the bidirectional lead screw 205 rotates, the two adjusting rings 210 are driven to move toward the direction close to the main semi-ring track 201.

[0037] In this embodiment, a first gear 206 is fixedly arranged at the middle of the bidirectional lead screw 205, and the axis of the first gear 206 is arranged along the axial direction of the bidirectional lead screw 205. The calibration mechanism also includes a first drive assembly, and the first drive assembly includes a calibration motor 207 and a second gear 213. The second gear 213 is arranged on the first fixed block 212 so as to be rotatable around itself, and the axis of the second gear 213 is arranged along the axial direction of the bidirectional lead screw 205, and the second gear 213 is meshed with the first gear 206. The calibration motor 207 is fixedly arranged on the first fixed block 212, and the output shaft of the calibration motor 207 is fixedly connected to the second gear 213. When the calibration motor 207 is started, the calibration motor 207 drives the second gear 213 to rotate, the second gear 213 drives the first gear 206 to rotate, and the first gear 206 drives the bidirectional lead screw 205 to rotate.

[0038] In this embodiment, the constraint semi-ring 203 is provided with a mounting opening at both ends along the circumference of the pipeline 100, and the mounting opening is connected to the first ring groove. The welding mechanism also includes two second drive assemblies, which are distributed along the circumference of the pipeline 100, and the two second drive assemblies are respectively fixedly arranged at both ends of the main semi-ring track 201. Each second drive assembly includes a welding drive motor 304 and a third gear 303. The welding drive motor 304 is fixedly arranged on the constraint semi-ring 203, and the third gear 303 is fixedly connected to the output shaft of the welding drive motor 304. The third gear 303 can rotate around its own axis. The third gear 303 is arranged at the mounting opening, and the third gear 303 is meshed with the half gear ring 301. The welding drive motor 304 is started, the welding drive motor 304 drives the third gear 303 to rotate, the third gear 303 drives the half gear ring 301 to rotate, the half gear ring 301 rotates around the weld at a constant speed, and the electric control hydraulic rod is started at the same time, the electric control hydraulic rod drives the welding wire 302 to move toward the weld at a constant speed, and the welding of the two pipes 100 can be completed. And during the rotation of the half gear ring 301, there is always a third gear 303 meshing with the half gear ring 301.

[0039] In this embodiment, a connection ring 215 is fixedly provided at one end of the constraint semi-ring 203 along the circumference of the pipeline 100. A constraint belt 204 is provided on each constraint semi-ring 203, one end of the constraint belt 204 is fixedly connected to one end of the constraint semi-ring 203, and the other end of the constraint belt 204 is used to be fixedly connected to the connection ring 215. The constraint belt 204 is wound around the side of the pipeline 100 away from the constraint semi-ring 203, and the length of the constraint belt 204 is adjustable. When the constraint semi-ring 203 is clamped on the pipeline 100, the constraint semi-ring 203 and the pipeline 100 are concentrically arranged, and then the constraint belt 204 is tightened to connect the constraint semi-ring 203 and the pipeline 100.

[0040] In this embodiment, the space pipeline automatic welding device further includes two plug-in accessory tracks 202, which are detachably arranged at both ends of the main body semi-ring track 201 along the circumference of the pipeline 100. A second ring groove is provided in each plug-in accessory track 202, the second ring groove is connected to the first ring groove, and the half gear ring 301 is slidably arranged in the second ring groove.

[0041] After the main body semi-ring track 201 is installed between the two pipes 100, two plug-in accessory tracks 202 are installed at both ends of the main body semi-ring track 201 along the circumference of the pipe 100. The main body semi-ring track 201 is semi-ring-shaped, so that the main body semi-ring track 201 can be clamped on the pipe 100, and the plug-in accessory track 202 provides support to the half gear ring 301 through the two plug-in accessory tracks 202.

[0042] In this embodiment, a third through hole is opened in the middle of the main semi-ring track 201, and the third through hole is arranged along the radial direction of the pipeline 100, and the welding wire 302 is arranged in the third through hole. The space pipeline automatic welding device also includes a clamping and feeding mechanism, which includes an electric-controlled hydraulic rod and a clamping ring. The clamping ring is slidably arranged in the third through hole, and the clamping ring and the welding wire 302 are against each other. The electric-controlled hydraulic rod is fixedly arranged in the third through hole, and the extended end of the electric-controlled hydraulic rod is fixedly connected to the clamping ring.

[0043] After the welding wire 302 is installed in the third through hole, the clamping ring clamps the welding wire 302, and the half gear ring 301 drives the welding wire 302 to rotate around the weld at a uniform speed for one circle. At the same time, the electric-controlled hydraulic rod is started, and the electric-controlled hydraulic rod drives the welding wire 302 to move toward the weld at a uniform speed, thereby completing the welding of the two pipes 100.

[0044] In this embodiment, a third annular groove is provided on the main semi-ring track 201. The third annular groove and the first annular groove are concentrically arranged and connected to each other. The welding wire 302 passes through the third through hole and the third annular groove in sequence so that the welding wire 302 can extend into the weld.

[0045] Working process: During installation, the constraint semi-ring 203 on one side is set concentrically with the pipe 100 on one side, and then the constraint belt 204 is tightened to connect the constraint semi-ring 203 and the pipe 100. The main semi-ring track 201 is between the two pipes 100. After the welding wire 302 is installed in the third through hole, the clamping ring clamps the welding wire 302, and one end of the welding wire 302 is close to the side of the pipe 100 that needs to be welded. Then the constraint semi-ring 203 on the other side is set concentrically with the pipe 100 on the other side, and the constraint belt 204 on this side is connected. Then install the two plug-in accessory tracks 202 at both ends of the main semi-ring track 201 along the circumference of the pipe 100. Because it is manually installed, the distance between the constraint semi-rings 203 on both sides and the main semi-ring track 201 will be different, and the degree of stretching of the calibration springs 211 in the two spring assemblies will also be different.

[0046] The calibration motor 207 is started, and the calibration motor 207 drives the second gear 213 to rotate, the second gear 213 drives the first gear 206 to rotate, and the first gear 206 drives the bidirectional lead screw 205 to rotate. Since the inner circumferential wall of the adjustment ring 210 and the bidirectional lead screw 205 are threadedly matched, the rotation of the bidirectional lead screw 205 will cause the adjustment rings 210 on both sides to move toward the direction close to the main semi-ring track 201.

[0047] Since the outer peripheral wall of the adjusting ring 210 and the second through hole are in frictional contact, if the elastic force of the calibration spring 211 is smaller than the friction between the adjusting ring 210 and the restraining semi-ring 203, the adjusting ring 210 will drive the restraining semi-ring 203 to move synchronously toward the main semi-ring track 201. At the same time, the pipe 100 restrained by the restraining semi-ring 203 and the restraining belt 204 will move synchronously toward the main semi-ring track 201.

[0048] Until the elastic force of the calibration spring 211 is greater than the friction force between the adjustment ring 210 and the constraint half ring 203, the adjustment ring 210 and the constraint half ring 203 slide relative to each other, the constraint half ring 203 no longer moves, the bidirectional screw 205 drives the adjustment ring 210 to continue to move, and the reset spring 209 is stretched. When it is observed that the adjustment rings 210 on both sides slide relative to the constraint half ring 203, the calibration motor 207 is turned off.

[0049] At this time, the distances between the two constraint semi-rings 203 and the main semi-ring track 201 are the same, and the stretching degrees of the calibration springs 211 in the two spring assemblies are also the same, so that the stress between the two pipes 100 welded each time is the same. At this time, the two pipes 100 are concentrically arranged, and the width of the weld between the two pipes 100 is the same at all places, which improves the welding quality and prevents the problem that the two pipes 100 are easily disengaged due to the non-concentricity of the two pipes 100 and the different widths of the weld between the two pipes 100. The specifications of the calibration springs 211 in the two spring assemblies are the same, so when the elastic force of the calibration springs 211 is the same, the length of the calibration springs 211 is also the same, so this structure can also control the width of the weld to be the same each time welding, so as to improve the welding quality of multiple pipes 100.

[0050] Then, the welding drive motor 304 is started, the welding drive motor 304 drives the third gear 303 to rotate, the third gear 303 drives the half gear ring 301 to rotate, the half gear ring 301 rotates around the weld at a constant speed, and at the same time, the electric control hydraulic rod is started, the electric control hydraulic rod drives the welding wire 302 to move toward the weld at a constant speed, and the welding of the two pipes 100 can be completed. By the welding wire 302 rotating around the weld at a constant speed for one circle, and the welding wire 302 moving toward the weld, it is convenient to handle the welding of the pipe 100 in complex terrain, and can adapt to the working environment where manual welding is inconvenient, and the weld quality is high, and the appearance is neat and beautiful.

[0051] 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, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A space pipeline automatic welding device, characterized in that: It comprises a main body semi-ring track, a calibration mechanism and a welding mechanism; the main body semi-ring track is arranged between two adjacent pipes, a first fixing block is fixedly arranged in the middle of the main body semi-ring track, a first through hole is opened on the first fixing block, and the first through hole is arranged along the axial direction of the pipe; a first annular groove is opened in the main body semi-ring track, and the first annular groove and the pipe are arranged concentrically; The calibration mechanism includes a bidirectional lead screw, two constraint half rings, two spring assemblies and two adjustment assemblies; the constraint half rings and the pipeline are concentrically arranged, and each constraint half ring is slidably arranged on a pipeline; the bidirectional lead screw is arranged along the axial direction of the pipeline, the middle part of the bidirectional lead screw is rotatably arranged in the first through hole, and the two ends of the bidirectional lead screw are respectively rotatably connected with the two constraint half rings; Two spring assemblies are respectively arranged on both sides of the main body semi-ring track, each spring assembly includes a plurality of calibration springs, the plurality of calibration springs are distributed along the circumference of the pipeline, the calibration springs are arranged along the axial direction of the pipeline, one end of each calibration spring is fixedly connected to a constraint semi-ring, and the other end of each calibration spring is fixedly connected to the main body semi-ring track; two adjustment assemblies are respectively arranged at both ends of the bidirectional lead screw, and the adjustment assemblies are used to adjust the distance between the constraint semi-ring and the main body semi-ring track; The welding mechanism comprises a half gear ring and a welding wire; the half gear ring is slidably arranged in the first ring groove, and the half gear ring can rotate around the circumference of the pipeline, and the welding wire is arranged on the half gear ring, and the welding wire is used to weld two pipelines; A second fixed block is fixedly arranged in the middle of each constraint half ring, and a second through hole is opened on the second fixed block, and the second through hole is arranged along the axial direction of the pipeline; each adjustment component includes an adjustment ring, which is arranged along the axial direction of the pipeline, and the adjustment ring is slidably arranged in the second through hole, and the outer circumferential wall of the adjustment ring is in friction contact with the second through hole; and the adjustment ring is rotatably arranged on the bidirectional screw, and the inner circumferential wall of the adjustment ring is matched with the threaded transmission of the bidirectional screw.

2. The automatic welding device for space pipes according to claim 1 is characterized in that: Each adjustment assembly also includes a reset unit, and each reset unit includes a rotating block and a plurality of reset springs; the rotating block is rotatably mounted on the bidirectional lead screw, and the rotating block can be rotatably arranged around the axial direction of the bidirectional lead screw on a side of the second fixed block away from the main body semi-ring track; the plurality of reset springs are distributed along the circumference of the bidirectional lead screw, and each reset spring is arranged along the axial direction of the bidirectional lead screw, one end of each reset spring is fixedly connected to the rotating block, and the other end of each reset spring is fixedly connected to the adjustment ring.

3. The automatic welding device for space pipes according to claim 1 is characterized in that: The two adjusting rings are respectively matched with the bidirectional lead screw helical transmission, and the rotation directions of the two adjusting rings and the bidirectional lead screw helical cooperation are opposite.

4. The automatic welding device for space pipes according to claim 1 is characterized in that: A first gear is fixedly arranged in the middle of the bidirectional lead screw, and the axis of the first gear is arranged along the axial direction of the bidirectional lead screw; the calibration mechanism also includes a first drive assembly, and the first drive assembly includes a calibration motor and a second gear; the second gear is arranged on the first fixed block so as to be rotatable around itself, and the axis of the second gear is arranged along the axial direction of the bidirectional lead screw, and the second gear is meshed with the first gear; the calibration motor is fixedly arranged on the first fixed block, and the output shaft of the calibration motor is fixedly connected to the second gear.

5. The automatic welding device for space pipes according to claim 1 is characterized in that: The constraint half ring is provided with a mounting opening at both ends along the circumference of the pipeline, and the mounting opening is connected to the first ring groove; the welding mechanism also includes two second drive assemblies, the two second drive assemblies are distributed along the circumference of the pipeline, and the two second drive assemblies are respectively fixedly arranged at both ends of the main half ring track; each second drive assembly includes a welding drive motor and a third gear; the welding drive motor is fixedly arranged on the constraint half ring, the third gear is fixedly connected to the output shaft of the welding drive motor, the third gear can rotate around its own axis, the third gear is arranged at the mounting opening, and the third gear is meshed with the half gear ring.

6. The automatic welding device for space pipes according to claim 1 is characterized in that: A restraining belt is arranged on each restraining half ring, and both ends of the restraining belt are fixedly connected to the restraining half ring, and the restraining belt is wound around a side of the pipeline away from the restraining half ring.

7. The automatic welding device for space pipes according to claim 1 is characterized in that: The spatial pipeline automatic welding device also includes two plug-in accessory tracks, which are detachably arranged at the two ends of the main body semi-ring track along the circumference of the pipeline; each plug-in accessory track is provided with a second ring groove, the second ring groove is connected to the first ring groove, and the half gear ring is slidably arranged in the second ring groove.

8. The automatic welding device for space pipes according to claim 1 is characterized in that: A third through hole is opened in the middle of the main semi-ring track, the third through hole is arranged along the radial direction of the pipeline, and the welding wire is arranged in the third through hole; the spatial pipeline automatic welding device also includes a clamping and feeding mechanism, the clamping and feeding mechanism includes an electric-controlled hydraulic rod and a clamping ring, the clamping ring is slidably arranged in the third through hole, and the clamping ring and the welding wire are abutted against each other; the electric-controlled hydraulic rod is fixedly arranged in the third through hole, and the extended end of the electric-controlled hydraulic rod is fixedly connected to the clamping ring.

9. The automatic welding device for space pipes according to claim 8 is characterized in that: A third annular groove is provided on the main body semi-annular track. The third annular groove and the first annular groove are concentrically arranged and communicated with each other. The welding wire passes through the third through hole and the third annular groove in sequence.

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