Pipe body welding device convenient to adjust and working method thereof

Abstract

The invention discloses a pipe body welding device convenient to adjust and a working method thereof.The pipe body welding device convenient to adjust comprises a welding base, a welding clamp assembly and an adjusting assembly, the welding clamp assembly comprises a main clamp assembly and an auxiliary clamp assembly which are suitable for clamping a pipe body, and the main clamp assembly and the auxiliary clamp assembly are connected to one side of the welding base; the adjusting assembly is movably installed on the welding base and is suitable for driving the auxiliary clamp assembly to be aligned with the main clamp assembly, and when the pipe body is welded, the auxiliary clamp assembly is suitable for adjusting the pressure on the pipe body according to the temperature of the clamped pipe body. By arranging the adjusting assembly, the centers of pipe bodies clamped by the main clamp assembly and the auxiliary clamp assembly can be aligned, so that the pipe bodies with different pipe diameters can be conveniently welded, meanwhile, in the pipe body welding and cooling process, the pulling force on the two ends of the pipe bodies during welding seam cooling shrinkage can be adapted through self-adjustment of the auxiliary clamp assembly, and the welding quality is improved. Therefore, the welding quality of the pipe body is improved, and the welding seam deformation and cracking risks are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe welding, and specifically refers to a pipe welding device that is easy to adjust and its working method. Background Art

[0002] Pipe welding is a core technology in pipeline engineering, and its quality directly affects the overall sealing performance, strength and service life of the pipeline. For pipe bodies made of metal materials, technologies such as arc welding and gas shielded welding are often used. When welding two pipe bodies together, a professional pipe welding device is required to accurately dock and fix the pipe bodies.

[0003] In the prior art, a fixture is needed to circumferentially fix the pipe body when fixing the pipe body in the pipe welding device. However, during the welding process, since the welding position of the pipe body is in a state of rapid cooling after heating up, for example, the welding joint of a carbon steel pipe body can reach 1500°C, and the fixture always maintains a strong restraint on the pipe body, which easily causes the cooling shrinkage of the weld joint of the two pipe bodies to be blocked, and there is a great risk of weld deformation and cracking.

[0004] Therefore, those skilled in the art need a pipe welding device that can stably clamp the pipe body and prevent the cooling shrinkage of the weld from being blocked to overcome the above problems. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a pipe welding device that is easy to adjust. To solve the technical defects that the pipe welding device has a poor clamping effect on the pipe body and excessive clamping affects the weld quality, the present invention creatively aligns the centers of the pipe bodies clamped by the main fixture assembly and the sub-fixture assembly respectively by setting an adjustment component, so as to facilitate the welding of pipe bodies with different diameters. At the same time, during the welding and cooling process of the pipe body, the self-adjustment of the sub-fixture assembly can adapt to the tensile force on both ends of the pipe body during the cooling shrinkage of the weld, thereby improving the welding quality of the pipe body and reducing the risk of weld deformation and cracking.

[0006] The present invention also proposes a working method of a pipe welding device that is easy to adjust.

[0007] The technical solutions adopted by the present invention are as follows:

[0008] A tube welding device that is easy to adjust according to an embodiment of the first aspect of the present invention includes a welding base, a welding fixture assembly, and an adjustment assembly. The welding fixture assembly includes a main fixture assembly and a sub-fixture assembly suitable for clamping a tube. The main fixture assembly and the sub-fixture assembly are connected to one side of the welding base. The adjustment assembly is movably installed on the welding base and is suitable for driving the sub-fixture assembly to align with the main fixture assembly. When welding the tube in the main fixture assembly and the tube in the sub-fixture assembly, the sub-fixture assembly is suitable for adjusting the pressure on the tube according to the temperature of the clamped tube.

[0009] According to the tube welding device of the present invention, by setting the adjustment assembly, the centers of the tubes respectively clamped by the main fixture assembly and the sub-fixture assembly can be aligned, so as to facilitate welding tubes with different diameters. At the same time, during the welding and cooling process of the tube, through the self-adjustment of the sub-fixture assembly, it can adapt to the tensile force on both ends of the tube when the weld cools and shrinks, thereby improving the welding quality of the tube and reducing the risk of weld deformation and cracking.

[0010] According to some embodiments of the present invention, an activity groove is formed on the welding base. The main fixture assembly includes a near main fixture module and a far main fixture module arranged in parallel. The sub-fixture assembly includes a near sub-fixture module and a far sub-fixture module arranged in parallel. The near main fixture module and the near sub-fixture module are adjacent. The adjustment assembly includes a plurality of positioning columns, a movable plate, and a control module. The main fixture assembly and the welding base are fixedly connected through the positioning columns. The sub-fixture assembly and the movable plate are fixedly connected through the positioning columns. The movable plate is slidably clamped in the activity groove. The control module is installed on the welding base and is suitable for controlling the position of the movable plate.

[0011] According to some embodiments of the present invention, the control module includes a toggle gear, a transmission gear, and a protective shell. The toggle gear is connected to the welding base. A rack portion is formed on the surface of the movable plate adjacent to the toggle gear. The transmission gear is connected between the toggle gear and the rack portion. The protective shell covers the toggle gear and the transmission gear.

[0012] According to some alternative embodiments of the present invention, each of the far main fixture module and the near main fixture module includes a set of main fixture outer ring, main fixture inner ring, and auxiliary fixture. The main fixture outer ring surrounds the main fixture inner ring and is connected to the main fixture inner ring through a reinforcing rib. A through first clamping hole is formed on the lower side wall of the main fixture inner ring. The auxiliary fixture is telescopically arranged on the side wall of the main fixture outer ring and is suitable for extending out of the first clamping hole.

[0013] According to some embodiments of the present invention, there are multiple first clamping holes and the auxiliary jigs are in one-to-one correspondence with them. The auxiliary jig includes a first jig base, a telescopic first jig telescopic part and a jig joint. The first jig base is fixedly connected to the inner side wall of the outer ring of the main jig. One end of the first jig telescopic part is connected to the first jig base, and the other end of the first jig telescopic part is connected to the jig joint. The inner surface of the jig joint is formed into an arc shape and covers a heat insulation layer.

[0014] According to some embodiments of the present invention, the auxiliary jig includes a pressing base, a pressing joint and a limiting component. A through pressing hole is formed in the upper side wall of the inner ring of the main jig. The pressing base is arranged on the side wall of the outer ring of the main jig. The pressing joint is movably connected to the pressing base and penetrates through the pressing hole. The limiting component includes an operating gear, a connecting shaft, a linkage gear, a toothed condition and a blocking piece. The toothed condition is arranged on the side wall of the pressing joint. The linkage gear is arranged in the pressing base and cooperates with the toothed condition. The operating gear is arranged outside the pressing base and is connected to the linkage gear through the connecting shaft. The blocking piece is movably arranged on the outer ring of the main jig, and the blocking piece is adapted to control the rotation of the operating gear.

[0015] According to some alternative embodiments of the present invention, each of the far auxiliary jig module and the near auxiliary jig module includes a set of an outer auxiliary jig ring, an inner auxiliary jig ring and a rolling jig. The outer auxiliary jig ring surrounds the inner auxiliary jig ring and is connected to the inner auxiliary jig ring through a reinforcing rib. A through second clamping hole is formed in the side wall of the inner auxiliary jig ring. The rolling jig is telescopically arranged on the side wall of the outer auxiliary jig ring and is adapted to extend out of the second clamping hole.

[0016] According to some embodiments of the present invention, there are multiple second clamping holes and the rolling jigs are in one-to-one correspondence with them. The rolling jig includes a second jig base, a telescopic second jig telescopic part and a rolling joint. The second jig base is fixedly connected to the inner side wall of the outer auxiliary jig ring. One end of the second jig telescopic part is connected to the second jig base, and the other end of the second jig telescopic part is connected to the rolling joint.

[0017] According to some embodiments of the present invention, the rolling fixture includes an induction base, an induction joint and an induction component. A through induction hole is formed on the upper side wall of the inner ring of the secondary fixture. The induction base is arranged on the side wall of the outer ring of the secondary fixture. The induction joint is movably connected to the induction base and penetrates through the induction hole. The induction component includes a contact inclined block, an elastic member, a guiding member and a limiting member. The upper end of the induction joint is inclined and converged and cooperates with the inclined surface of the contact inclined block. The elastic member is arranged in the induction base and its two ends abut against the inner wall of the induction base and the contact inclined block. The guiding member is movably arranged on the contact inclined block. The limiting member is detachably arranged at the upper end of the induction base and cooperates with the guiding member. When the induction joint presses the contact inclined block, the limiting member is adapted to guide the guiding member to move unidirectionally and block the reverse movement of the guiding member.

[0018] A working method of a tube welding device convenient for adjustment according to an embodiment of the second aspect of the present invention uses the above-mentioned tube welding device convenient for adjustment, and the steps are as follows:

[0019] Place the two tubes to be welded in the main fixture assembly and the secondary fixture assembly respectively;

[0020] Control the position of the secondary fixture assembly by operating the adjustment component to initially align the two tubes, and clamp the inner tube thereof by the secondary fixture assembly;

[0021] Control the position of the tube inside the main fixture assembly by adjusting the pressing member to further align the two tubes, and at the same time clamp the inner tube thereof by the main fixture assembly;

[0022] Weld the two tubes. During the cooling process of the tubes, the secondary fixture assembly reduces the clamping force on the inner tube thereof;

[0023] When the tubes are completely cooled, take out the tubes from the tube welding device.

[0024] According to a working method of a tube welding device convenient for adjustment of the present invention, the centers of the tubes respectively clamped by the main fixture assembly and the secondary fixture assembly can be aligned through the adjustment component, so as to facilitate welding tubes with different diameters. At the same time, during the welding and cooling process of the tubes, the self-adjustment of the secondary fixture assembly can adapt to the tensile force on both ends of the tube during the cooling shrinkage of the weld, thereby improving the welding quality of the tube and reducing the risk of weld deformation and cracking.

[0025] The beneficial effects obtained by the present invention adopting the above structure are as follows:

[0026] (1) The adjusting component can align the centers of the pipe bodies clamped by the main fixture component and the auxiliary fixture component respectively, so as to facilitate the welding of pipe bodies with different diameters. At the same time, during the welding and cooling process of the pipe bodies, the self-adjustment of the auxiliary fixture component can adapt to the tensile force on both ends of the pipe body when the weld cools and shrinks, thereby improving the welding quality of the pipe body and reducing the risks of weld deformation and cracking.

[0027] (2) The adjusting component can drive the auxiliary fixture module to move relative to the main fixture module, so as to facilitate the adjustment of the relative positions of the two pipe bodies in the front-back direction and alignment.

[0028] (3) The adjusting component is convenient for the operator to operate, facilitating the fine adjustment of the relative positions of the two pipe bodies, improving the butt joint quality of the pipe body welding device for the pipe bodies. The protective shell can protect other components of the control module, improving the reliability of the pipe body welding device.

[0029] (4) The main fixture component can clamp and carry the pipe body inside it well, and can adjust the up-down position of the pipe body by squeezing the pipe body, which is beneficial to further aligning the two pipe bodies.

[0030] (5) By squeezing the pipe body with the auxiliary fixture, the height position of the pipe body in the main fixture component can be adjusted according to the height position of the pipe body in the auxiliary fixture component, so as to facilitate the adjustment of the relative positions of the two pipe bodies in the up-down direction and alignment, and further improve the butt joint quality of the pipe body welding device for the pipe bodies.

[0031] (6) The auxiliary fixture component can not only effectively clamp the pipe body inside it, but also reduce the resistance to the axial direction of the pipe body when the pipe body cools, facilitating the natural cooling and shrinkage at the weld, thereby improving the welding quality of the pipe body.

[0032] Additional aspects and advantages of the present invention will be given in the following description, some of which will become obvious from the following description, or be learned through the practice of the present invention. Brief Description of the Drawings

[0033] Figure 1 is a top view of a pipe body welding device that is easy to adjust according to some embodiments of the present invention;

[0034] Figure 2 is a side view of a pipe body welding device that is easy to adjust according to some embodiments of the present invention;

[0035] Figure 3 is a three-dimensional view of a pipe body welding device that is easy to adjust according to some embodiments of the present invention;

[0036] Figure 4 is Figure 3 an enlarged view of part A in

[0037] Figure 5Is a perspective view from another angle of a tube welding device that is easy to adjust according to some embodiments of the present invention;

[0038] Figure 6 Is Figure 5 An enlarged view of part B in;

[0039] Figure 7 Is a perspective view of a partial structure of a tube welding device that is easy to adjust according to some embodiments of the present invention;

[0040] Figure 8 Is a perspective view of a partial structure of an induction component according to some embodiments of the present invention;

[0041] Figure 9 Is Figure 8 An enlarged view of part C in;

[0042] Figure 10 Is Figure 9 An enlarged view of part D in;

[0043] Figure 11 Is Figure 9 An enlarged view of part E in;

[0044] Figure 12 Is a schematic diagram of a working method of a tube welding device that is easy to adjust according to some embodiments of the present invention.

[0045] Description of reference numerals in the figure:

[0046] Welding base 1; movable groove 11;

[0047] Welding fixture assembly 2; main fixture assembly 21; near main fixture module 21a; far main fixture module 21b; main fixture outer ring 211; main fixture inner ring 212; first clamping hole 2121; pressing hole 2122; auxiliary fixture 213; first fixture base 2131; first fixture telescopic part 2132; fixture joint 2133; pressing base 2134; pressing joint 2135; limiting component 2136; operating gear 21361; blocking piece 21362; sub-fixture assembly 22; near sub-fixture module 22a; far sub-fixture module 22b; sub-fixture outer ring 221; sub-fixture inner ring 222; second clamping hole 2221; induction hole 2222; rolling fixture 223; second fixture base 2231; second fixture telescopic part 2232; rolling joint 2233; induction base 2234; induction joint 2235; induction component 2236; contact inclined block 22361; elastic member 22362; orienting member 22363; limiting member 22364; limiting housing 223641; limiting hole 223641a; recessed part 223641b; limiting block 223642; limiting shaft 223643; protruding block 223643a;

[0048] Adjustment assembly 3; positioning column 31; movable plate 32; rack portion 321; control module 33; shifting gear 331; transmission gear 332; protective shell 333.

[0049] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0051] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0052] refer to Figures 1 - 7 According to the first aspect of the embodiment of the present invention, an adjustable pipe body welding device includes a welding base 1, a welding fixture assembly 2 and an adjustment assembly 3. The welding base 1 has the function of supporting and bearing other components of the pipe body welding device. The welding fixture assembly 2 includes a main fixture assembly 21 and a sub-fixture assembly 22 suitable for clamping the pipe body. The main fixture assembly 21 and the sub-fixture assembly 22 are connected to one side of the welding base 1. When welding two pipe bodies, the main fixture assembly 21 and the sub-fixture assembly 22 can clamp one pipe body respectively, thereby facilitating the docking of the two pipe bodies. The adjustment component 3 is movably installed on the welding base 1 and is suitable for driving the auxiliary clamp component 22 to align with the main clamp component 21. The tube body in the auxiliary clamp component 22 and the tube body in the main clamp component 21 can be aligned in the horizontal direction and the vertical direction. For example, a tube body can be placed in the auxiliary clamp component 22 first, and the auxiliary clamp component 22 lightly clamps the tube body therein to fix it, and then the other tube body is placed in the main clamp component 21. After it is stable, the auxiliary clamp component 22 is moved to align the centers of the two tube bodies in the horizontal direction. After that, the main clamp component 21 can squeeze the tube body therein to adjust its height, so that the centers of the two tube bodies are aligned in the vertical direction, which is convenient for welding tubes with different diameters.

[0053] When welding the pipe body in the main fixture assembly 21 and the pipe body in the auxiliary fixture assembly 22, the auxiliary fixture assembly 22 is adapted to adjust the pressure on the pipe body according to the temperature of the clamped pipe body. During the process of pipe body welding, the temperature of the pipe body first rises due to welding and then drops due to cooling. When the temperature of the pipe body rises, the volume of the pipe body expands, causing the pipe body to exert a certain degree of extrusion on the main fixture assembly 21 and the auxiliary fixture assembly 22. The inner diameters of the main fixture assembly 21 and the auxiliary fixture assembly 22 can be adjusted adaptively, and the main fixture assembly 21 and the auxiliary fixture assembly 22 can always maintain a balanced state with the pipe body. When the temperature of the pipe body drops, the volume of the pipe body shrinks, specifically manifested as the pipe body shrinking in the axial direction and the radial direction. Since the main fixture assembly 21 always maintains the state of clamping the pipe body, the pipe body in the main fixture assembly 21 can always maintain a relatively fixed state with the main fixture assembly 21 in the axial direction. However, as the pipe body shrinks in the radial direction, the auxiliary fixture assembly 22 can gradually reduce the clamping force on the pipe body and make the auxiliary fixture assembly 22 only play a role in bearing the pipe body. As the pipe body shrinks in the axial direction, the pipe body in the auxiliary fixture assembly 22 can move relative to the auxiliary fixture assembly 22, so that the two pipe bodies can adapt to the axial tension generated during the cooling and shrinkage of the weld, improving the welding quality of the pipe body and reducing the risk of weld deformation and cracking.

[0054] According to the pipe body welding device of the present invention, by setting the adjustment assembly 3, the centers of the pipe bodies respectively clamped by the main fixture assembly 21 and the auxiliary fixture assembly 22 can be aligned, so as to facilitate the welding of pipe bodies with different diameters. At the same time, during the process of pipe body welding and cooling, through the self-adjustment of the auxiliary fixture assembly 22, it can adapt to the tension on both ends of the pipe body during the cooling and shrinkage of the weld, thereby improving the welding quality of the pipe body and reducing the risk of weld deformation and cracking.

[0055] Reference Figures 1 - 7, according to some embodiments of the present invention, a movable groove 11 is formed on the welding base 1. The main fixture assembly 21 includes a near main fixture module 21a and a far main fixture module 21b arranged in parallel. The sub-fixture assembly 22 includes a near sub-fixture module 22a and a far sub-fixture module 22b arranged in parallel. The near main fixture module 21a is adjacent to the near sub-fixture module 22a. The near main fixture module 21a and the far main fixture module 21b can clamp a pipe body simultaneously, and the near sub-fixture module 22a and the far sub-fixture module 22b can clamp another pipe body simultaneously, which is beneficial to stably clamping the pipe body. The adjusting assembly 3 includes a plurality of positioning posts 31, a movable plate 32 and a control module 33. The main fixture assembly 21 and the welding base 1 are fixedly connected by the positioning posts 31. The sub-fixture assembly 22 and the movable plate 32 are fixedly connected by the positioning posts 31. The movable plate 32 is slidably clamped in the movable groove 11. The control module 33 is installed on the welding base 1 and is adapted to control the position of the movable plate 32. By driving the movable plate 32 through the control module 33, it is convenient to adjust the relative position of the main fixture assembly 21 and the sub-fixture assembly 22 in the horizontal direction, so that the centers of the two pipe bodies are aligned in the horizontal direction.

[0056] Reference Figure 7 , according to some embodiments of the present invention, the control module 33 includes a toggle gear 331, a transmission gear 332 and a protective shell 333. The toggle gear 331 is connected to the welding base 1. A rack portion 321 is formed on the surface of the movable plate 32 adjacent to the toggle gear 331. The transmission gear 332 is connected between the toggle gear 331 and the rack portion 321. The user can drive the transmission gear 332 to rotate by rotating the toggle gear 331, thereby driving the movable plate 32 to move relative to the welding base 1, so as to realize aligning the centers of the two pipe bodies in the horizontal direction by adjusting the relative position of the main fixture assembly 21 and the sub-fixture assembly 22 in the horizontal direction. At the same time, it is convenient for the staff to operate, facilitates finely adjusting the relative position of the two pipe bodies, improves the butt joint quality of the pipe body welding device for the pipe body. The protective shell 333 covers the toggle gear 331 and the transmission gear 332. The protective shell 333 can protect other components of the control module 33 and improve the structural strength of the pipe body welding device.

[0057] Reference Figures 3 - 7, according to some alternative embodiments of the present invention, the far main fixture module 21b and the near main fixture module 21a each include a set of main fixture outer rings 211, main fixture inner rings 212 and auxiliary fixtures 213. The main fixture outer ring 211 is arranged around the main fixture inner ring 212 and is connected to the main fixture inner ring 212 through reinforcing ribs. The reinforcing ribs can improve the structural strength of the main fixture assembly 21. A through first clamping hole 2121 is formed on the lower side wall of the main fixture inner ring 212. The auxiliary fixture 213 is telescopically arranged on the side wall of the main fixture outer ring 211 and is adapted to extend out of the first clamping hole 2121. The auxiliary fixture 213 can carry the pipe body inside the main fixture assembly 21. When the temperature of the pipe body rises, the pipe body expands and presses the auxiliary fixture 213. The auxiliary fixture 213 shortens and can stably clamp the pipe body. When the temperature of the pipe body drops, the pipe body contracts, the auxiliary fixture 213 elongates and continues to stably clamp the pipe body, thereby realizing the effective fixation of the pipe body by the main fixture assembly 21.

[0058] Reference Figure 5 and Figure 6 , according to some embodiments of the present invention, there are multiple first clamping holes 2121 and auxiliary fixtures 213, and they are in one-to-one correspondence. The auxiliary fixture 213 includes a first fixture base 2131, a telescopable first fixture telescopic part 2132 and a fixture joint 2133. The first fixture base 2131 is fixedly connected to the inner side wall of the main fixture outer ring 211. One end of the first fixture telescopic part 2132 is connected to the first fixture base 2131, and the other end of the first fixture telescopic part 2132 is connected to the fixture joint 2133. The inner surface of the fixture joint 2133 is formed into an arc shape and covers a heat insulation layer. The above design enables the main fixture assembly 21 to be applicable to pipe bodies with different diameters, and at the same time, the auxiliary fixture 213 can always effectively clamp the pipe body when the pipe body deforms due to thermal expansion and contraction.

[0059] Reference Figure 5 and Figure 6, according to some embodiments of the present invention, the auxiliary fixture 213 includes a pressing base 2134, a pressing joint 2135 and a limiting component 2136. A through pressing hole 2122 is formed on the upper side wall of the inner ring 212 of the main fixture. The pressing base 2134 is arranged on the side wall of the outer ring 211 of the main fixture. The pressing joint 2135 is movably connected to the pressing base 2134 and passes through the pressing hole 2122. The pressing joint 2135 can clamp the pipe body from above the pipe body, thereby improving the clamping effect of the main fixture assembly 21. At the same time, when the pressing joint 2135 abuts against the pipe body, the height position of the pipe body can be adjusted by adjusting the position of the pressing joint 2135, so that the pipe body clamped by the main fixture assembly 21 can be aligned with the pipe body clamped by the sub-fixture assembly 22 in the vertical direction. The limiting component 2136 includes an operating gear 21361, a connecting shaft, an interlocking gear, a tooth condition and a blocking member 21362. The tooth condition is arranged on the side wall of the pressing joint 2135. The interlocking gear is arranged in the pressing base 2134 and cooperates with the tooth condition. The operating gear 21361 is arranged outside the pressing base 2134 and is connected to the interlocking gear through the connecting shaft. The blocking member 21362 is movably arranged on the outer ring 211 of the main fixture. The blocking member 21362 is adapted to control the rotation of the operating gear 21361. For example, the blocking member 21362 is a rotatable baffle. When the blocking member 21362 rotates to a position where it does not interfere with the rotation of the operating gear 21361, the user can adjust the position of the pressing joint 2135 by rotating the operating gear 21361 to facilitate the alignment of the pipe body clamped by the main fixture assembly 21 with the pipe body clamped by the sub-fixture assembly 22 in the vertical direction. When the blocking member 21362 rotates to a position where it interferes with the rotation of the operating gear 21361, the operating gear 21361 is locked to stably clamp the pipe body.

[0060] Reference Figure 3 and Figure 4 , according to some alternative embodiments of the present invention, the far sub-fixture module 22b and the near sub-fixture module 22a each include a set of sub-fixture outer rings 221, sub-fixture inner rings 222 and rolling fixtures 223. The sub-fixture outer ring 221 surrounds the sub-fixture inner ring 222 and is connected to the sub-fixture inner ring 222 through a reinforcing rib. A through second clamping hole 2221 is formed on the side wall of the sub-fixture inner ring 222. The rolling fixture 223 is telescopically arranged on the side wall of the sub-fixture outer ring 221 and is adapted to extend out of the second clamping hole 2221. The rolling fixture 223 can carry the pipe body in the sub-fixture assembly 22. When the temperature of the pipe body rises, the pipe body expands and presses the rolling fixture 223. The rolling fixture 223 shortens and always stably carries the pipe body. When the temperature of the pipe body drops, the pipe body contracts, the rolling fixture 223 elongates and continues to carry the pipe body. At this time, the pressure of the sub-fixture assembly 22 on the pipe body in the radial direction is small, and the axial tension generated when the pipe body in the sub-fixture assembly 22 cools and shrinks can move towards the pipe body in the main fixture assembly 21, thereby reducing the risk of weld deformation and cracking.

[0061] Reference Figure 3 and Figure 4 According to some embodiments of the present invention, there are multiple second clamping holes 2221 corresponding to the rolling fixtures 223 one by one. The rolling fixture 223 includes a second fixture base 2231, a telescopic second fixture telescopic part 2232 and a rolling joint 2233. The second fixture base 2231 is fixedly connected to the inner side wall of the auxiliary fixture outer ring 221. One end of the second fixture telescopic part 2232 is connected to the second fixture base 2231, and the other end of the second fixture telescopic part 2232 is connected to the rolling joint 2233. The above design enables the auxiliary fixture assembly 22 to be applicable to pipe bodies of different pipe diameters. When the pipe body deforms due to thermal expansion and contraction, the rolling fixture 223 can always effectively carry the pipe body. When the pipe body in the auxiliary fixture assembly 22 moves towards the pipe body in the main fixture assembly 21, the rolling fixture 223 generates a relatively small frictional force on the pipe body, thereby further improving the welding quality of the pipe body and the reliability of the pipe body welding device.

[0062]

[0062] Reference Figures 3 - 11 According to some embodiments of the present invention, the rolling fixture 223 includes an induction base 2234, an induction joint 2235 and an induction component 2236. A through induction hole 2222 is formed on the upper side wall of the auxiliary fixture inner ring 222. The induction base 2234 is arranged on the side wall of the auxiliary fixture outer ring 221. The induction joint 2235 is movably connected to the induction base 2234 and penetrates through the induction hole 2222. The induction joint 2235 can clamp the pipe body from above the pipe body, thereby improving the clamping effect of the auxiliary fixture assembly 22. At the same time, when the induction joint 2235 abuts against the pipe body, when the pipe body expands due to temperature rise, it can compress the induction joint 2235. At this time, the auxiliary fixture assembly 22 can still stably clamp the pipe body. When the pipe body contracts due to temperature drop, the pipe body no longer presses the induction joint 2235, so that the pipe body is disengaged from the cooperation with the induction joint 2235. At this time, the auxiliary fixture assembly 22 only generates a bearing effect on the pipe body through the rolling fixture 223, and the pipe body in the auxiliary fixture assembly 22 can smoothly move towards the pipe body in the main fixture assembly 21, thereby improving the performance of the pipe body welding device. The induction component 2236 includes a contact inclined block 22361, an elastic member 22362, a directional member 22363 and a limiting member 22364. The upper end of the induction joint 2235 is inclined and converges and cooperates with the inclined surface of the contact inclined block 22361. For example, the inclination of the upper inclined surface of the induction joint 2235 is 45°, and the inclination of the inclined surface of the contact inclined block 22361 is 45°. The elastic member 22362 is arranged in the induction base 2234 and abuts against the inner wall of the induction base 2234 and the contact inclined block 22361 at both ends. The elastic member 22362 can press the contact inclined block 22361, so that the induction joint 2235 can stably clamp the pipe body. For example, the elastic member 22362 is a spring.

[0063]

[0063] The orienting member 22363 is movably provided on the contact cam 22361. The orienting member 22363 can restrict the moving direction of the contact cam 22361. For example, the orienting member 22363 is a ratchet wheel. The limiting member 22364 is detachably provided at the upper end of the induction base 2234 and cooperates with the orienting member 22363. The limiting member 22364 can be composed of a limiting housing 223641 having limiting holes 223641a arranged oppositely front and back on the inner wall, a plurality of arranged limiting blocks 223642, and a plurality of limiting shafts 223643 penetrating through the limiting holes 223641a. The limiting blocks 223642 are fixedly connected to the corresponding limiting shafts 223643. Both ends of the limiting shaft 223643 are formed with fan-shaped or semi-circular raised blocks 223643a. A recessed portion 223641b is formed in the limiting hole 223641a. The raised block 223643a can be received in the recessed portion 223641b and has a certain rotation space in the recessed portion 223641b. For example, the raised block 223643a is semi-circular and the central angle of the recessed portion 223641b is 270°. When the induction joint 2235 presses the contact cam 22361, the limiting member 22364 is adapted to guide the one-way movement of the orienting member 22363 and block the reverse movement of the orienting member 22363. When the limiting member 22364 is installed on the induction base 2234, a plurality of limiting blocks 223642 cooperate with the ratchet wheel. When the pipe body compresses the induction joint 2235 due to temperature rise, the induction joint 2235 pushes the contact cam 22361 and drives the ratchet wheel to rotate. At this time, the limiting shaft 223643 can move smoothly in the limiting hole 223641a. The elastic force applied to the contact cam 22361 by the elastic member 22362 enables the sub-jig module to stably clamp the pipe body. When the pipe body no longer presses the induction joint 2235 due to temperature drop, even if the elastic member 22362 still applies an elastic force to the contact cam 22361, both ends of the limiting shaft 223643 are restricted by the recessed portion 223641b and cannot rotate reversely, so that the limiting block 223642 locks the ratchet wheel, and the induction joint 2235 no longer clamps the pipe body, thereby enabling the pipe body to be disengaged from the induction joint 2235.

[0064] Reference Figure 12 , A working method of a pipe body welding device easy to adjust according to the second aspect embodiment of the present invention uses the above-mentioned pipe body welding device easy to adjust, and the steps are as follows:

[0065] Place two pipes to be welded in the main jig assembly 21 and the sub-jig assembly 22 respectively;

[0066] Control the position of the sub-jig assembly 22 through the operation of the adjustment assembly 3 to initially align the two pipes, that is, align the two pipes in the horizontal direction, and clamp the inner pipe body through the sub-jig assembly 22. The induction joint 2235 can effectively clamp the pipe body by installing the limiting member 22364;

[0067] The position of the pipe body inside the main fixture assembly 21 is controlled by adjusting the pressing member to further align the two pipe bodies. By clamping the pipe body inside the main fixture assembly 21, the position of the pressing joint 2135 can be adjusted by rotating the operating gear 21361, so that the pipe body clamped by the main fixture assembly 21 is aligned with the pipe body clamped by the sub-fixture assembly 22 in the vertical direction;

[0068] The two pipe bodies are welded. During the cooling process of the pipe bodies, the sub-fixture assembly 22 reduces the clamping force on the pipe body inside it. The ratchet is locked by the limit block 223642, and the induction joint 2235 no longer clamps the pipe body, so that the pipe body is disengaged from the cooperation with the induction joint 2235;

[0069] When the pipe bodies are completely cooled, the pipe bodies are taken out of the pipe welding device, the limiting member 22364 is disassembled and the induction joint 2235 is restored.

[0070] According to the working method of a pipe welding device that is easy to adjust according to the present invention, the centers of the pipe bodies respectively clamped by the main fixture assembly 21 and the sub-fixture assembly 22 can be aligned through the adjusting assembly 3, so as to facilitate the welding of pipe bodies with different diameters. At the same time, during the welding and cooling process of the pipe bodies, the self-adjustment of the sub-fixture assembly 22 can adapt to the tensile force on both ends of the pipe body when the weld cools and shrinks, thereby improving the welding quality of the pipe body and reducing the risk of weld deformation and cracking.

[0071] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0072] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

[0073] The above describes the present invention and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. In general, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. An adjustable pipe welding device, characterized in that, Including: A welding base (1), a welding fixture assembly (2) and an adjusting assembly (3). The welding fixture assembly (2) includes a main fixture assembly (21) and a sub-fixture assembly (22) suitable for clamping a pipe body. The main fixture assembly (21) and the sub-fixture assembly (22) are connected to one side of the welding base (1). The adjusting assembly (3) is movably installed on the welding base (1) and is suitable for driving the sub-fixture assembly (22) to align with the main fixture assembly (21). When welding the pipe body in the main fixture assembly (21) and the pipe body in the sub-fixture assembly (22), the sub-fixture assembly (22) is suitable for adjusting the pressure on the pipe body according to the temperature of the clamped pipe body.

2. The tube body welding device that is easy to adjust according to claim 1, characterized in that, An activity groove (11) is formed on the welding base (1). The main fixture assembly (21) includes a near main fixture module (21a) and a far main fixture module (21b) arranged in parallel. The sub-fixture assembly (22) includes a near sub-fixture module (22a) and a far sub-fixture module (22b) arranged in parallel. The near main fixture module (21a) is adjacent to the near sub-fixture module (22a). The adjusting assembly (3) includes a plurality of positioning columns (31), an activity plate (32) and a control module (33). The main fixture assembly (21) and the welding base (1) are fixedly connected through the positioning columns (31). The sub-fixture assembly (22) and the activity plate (32) are fixedly connected through the positioning columns (31). The activity plate (32) is slidably clamped in the activity groove (11). The control module (33) is installed on the welding base (1) and is suitable for controlling the position of the activity plate (32).

3. The tube body welding device that is easy to adjust according to claim 2, wherein, The control module (33) includes a toggle gear (331), a transmission gear (332) and a protective shell (333). The toggle gear (331) is connected to the welding base (1). A rack portion (321) is formed on the surface of the activity plate (32) adjacent to the toggle gear (331). The transmission gear (332) is connected between the toggle gear (331) and the rack portion (321). The protective shell (333) covers the toggle gear (331) and the transmission gear (332).

4. An adjustable pipe welding device according to claim 2, wherein, The far main fixture module (21b) and the near main fixture module (21a) each include a set of main fixture outer rings (211), main fixture inner rings (212) and auxiliary fixtures (213). The main fixture outer rings (211) are arranged around the main fixture inner rings (212) and are connected to the main fixture inner rings (212) through reinforcing ribs. A through first clamping hole (2121) is formed on the lower side wall of the main fixture inner ring (212). The auxiliary fixtures (213) are telescopically arranged on the side walls of the main fixture outer rings (211) and are suitable for extending out of the first clamping hole (2121).

5. The tube body welding device that is easy to adjust according to claim 4, wherein There are multiple first clamping holes (2121) which correspond to the auxiliary jigs (213) one by one. The auxiliary jigs (213) include first jig bases (2131), retractable first jig telescopic parts (2132) and jig connectors (2133). The first jig bases (2131) are fixedly connected to the inner side wall of the main jig outer ring (211). One end of the first jig telescopic part (2132) is connected to the first jig base (2131), and the other end of the first jig telescopic part (2132) is connected to the jig connector (2133). The inner surface of the jig connector (2133) is formed in an arc shape and covers a heat insulation layer.

6. The tube body welding device according to claim 5, characterized in that, The auxiliary jig (213) includes a pressing base (2134), a pressing connector (2135) and a limiting component (2136). A through pressing hole (2122) is formed in the upper side wall of the main jig inner ring (212). The pressing base (2134) is arranged on the side wall of the main jig outer ring (211). The pressing connector (2135) is movably connected to the pressing base (2134) and penetrates through the pressing hole (2122). The limiting component (2136) includes an operating gear (21361), a connecting shaft, an interlocking gear, a tooth condition and a blocking part (21362). The tooth condition is arranged on the side wall of the pressing connector (2135). The interlocking gear is arranged in the pressing base (2134) and cooperates with the tooth condition. The operating gear (21361) is arranged outside the pressing base (2134) and is connected to the interlocking gear through the connecting shaft. The blocking part (21362) is movably arranged on the main jig outer ring (211), and the blocking part (21362) is adapted to control the rotation of the operating gear (21361).

7. The tube body welding device that is easy to adjust according to claim 4, characterized in that, Each of the far auxiliary jig module (22b) and the near auxiliary jig module (22a) includes a set of auxiliary jig outer rings (221), auxiliary jig inner rings (222) and rolling jigs (223). The auxiliary jig outer rings (221) surround the auxiliary jig inner rings (222) and are connected to the auxiliary jig inner rings (222) through reinforcing ribs. A through second clamping hole (2221) is formed in the side wall of the auxiliary jig inner ring (222). The rolling jigs (223) are retractably arranged on the side wall of the auxiliary jig outer rings (221) and are adapted to extend out of the second clamping holes (2221).

8. An adjustable pipe welding device according to claim 7, characterized in that, There are multiple second clamping holes (2221) which correspond to the rolling jigs (223) one by one. The rolling jigs (223) include second jig bases (2231), retractable second jig telescopic parts (2232) and rolling connectors (2233). The second jig bases (2231) are fixedly connected to the inner side wall of the auxiliary jig outer rings (221). One end of the second jig telescopic part (2232) is connected to the second jig base (2231), and the other end of the second jig telescopic part (2232) is connected to the rolling connector (2233).

9. The tube body welding device according to claim 8, characterized in that, The rolling fixture (223) includes an induction base (2234), an induction joint (2235) and an induction component (2236). A through induction hole (2222) is formed on the upper side wall of the inner ring (222) of the secondary fixture. The induction base (2234) is arranged on the side wall of the outer ring (221) of the secondary fixture. The induction joint (2235) is movably connected to the induction base (2234) and penetrates through the induction hole (2222). The induction component (2236) includes a contact inclined block (22361), an elastic member (22362), an orienting member (22363) and a limiting member (22364). The upper end of the induction joint (2235) is inclined and converged and cooperates with the inclined surface of the contact inclined block (22361). The elastic member (22362) is arranged in the induction base (2234) and its two ends abut against the inner wall of the induction base (2234) and the contact inclined block (22361). The orienting member (22363) is movably arranged on the contact inclined block (22361). The limiting member (22364) is detachably arranged at the upper end of the induction base (2234) and cooperates with the orienting member (22363). When the induction joint (2235) presses the contact inclined block (22361), the limiting member (22364) is adapted to guide the one-way movement of the orienting member (22363) and block the reverse movement of the orienting member (22363).

10. A working method of a tube body welding device that is convenient for adjustment, characterized in that, When using a tube welding device convenient for adjustment according to any one of claims 1-9 above, the steps are as follows: Place the two tubes to be welded in the main fixture assembly (21) and the secondary fixture assembly (22) respectively; Control the position of the secondary fixture assembly (22) through the operation of the adjustment assembly (3) to initially align the two tubes, and clamp the inner tube thereof through the secondary fixture assembly (22); Control the position of the tube inside the main fixture assembly (21) through the adjustment of the pressing member to further align the two tubes, and at the same time clamp the inner tube thereof through the main fixture assembly (21); Weld the two tubes. During the cooling process of the tubes, the secondary fixture assembly (22) reduces the clamping force on the inner tube thereof; When the tubes are completely cooled, take out the tubes from the tube welding device.

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