Welding device for anti-corrosion pipeline

Abstract

The invention discloses a welding device for an anti-corrosion pipeline, and relates to the technical field of pipeline welding. Comprising an adjustable telescopic rod, a mounting base is fixed to the top end of the adjustable telescopic rod, a two-way lead screw is transversely and rotatably mounted in a cavity in the top of the mounting base through a motor, the two-way lead screw is sleeved with a first driving base and a second driving base in a threaded mode, and a first positioning base is mounted at the top of the first driving base; and a second positioning seat is installed at the top of the second driving seat, a rail is fixed to the inner side of the periphery of the first positioning seat, a roller seat is connected to the rail through a spherical limiting piece, and a second gear is installed between two rollers in a cavity in the bottom of the roller seat. When the welding device for the anti-corrosion pipeline is used for welding, clamping can be completed according to the anti-corrosion pipelines with different diameters, matching of the datum line of the welding gun and the butt joint position of the pipelines is achieved through the adjusting mechanism, and the butt joint and welding operation efficiency can be improved.

Description

Technical Field

[0001] This invention relates to the field of pipeline welding technology, specifically to a welding device for corrosion-resistant pipelines. Background Technology

[0002] The core function of welding equipment for anti-corrosion pipelines is to perform on-site welding operations on the pipelines, forming a strong weld at the pipe connection points through fusion, ensuring the sealing and structural integrity of the pipeline connection. It also adapts to the material characteristics of the anti-corrosion pipelines and the protection requirements of the anti-corrosion layer, preventing damage to the anti-corrosion performance during the welding process, ultimately achieving leak-proof and corrosion-resistant pipeline systems, and meeting the safe operation requirements of the transported media. However, existing welding equipment for anti-corrosion pipelines has the following problems in use: In existing anti-corrosion pipeline welding equipment, the clamping position of the connector is mostly measured and adjusted manually during the pipeline docking process. The positioning of the welding head also requires manual intervention. The high proportion of manual operation is prone to human error, which affects the accuracy of pipeline docking and subsequent welding quality. When welding anti-corrosion pipelines of different diameters, the clamping range of the connector and the positioning reference of the welding gun need to be readjusted. It is not convenient to adapt to anti-corrosion pipelines of different diameters through simple adjustments. The debugging process is cumbersome and time-consuming, which limits the overall welding operation efficiency.

[0003] To address the aforementioned issues, innovative designs are urgently needed based on existing approaches. Summary of the Invention

[0004] The purpose of this invention is to provide a welding device for corrosion-resistant pipelines to solve the problems mentioned in the background art. The technical solution of this invention addresses the problem that the existing technical solutions are too simplistic and provides a solution that is significantly different from the existing technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a welding device for anti-corrosion pipelines, comprising an adjustable telescopic rod, a mounting base fixed to the top of the adjustable telescopic rod, a bidirectional lead screw mounted in the top cavity of the mounting base via a motor for transverse rotation, a first drive seat and a second drive seat threaded onto the bidirectional lead screw, a first positioning seat mounted on the top of the first drive seat, a second positioning seat mounted on the top of the second drive seat, a track fixed to the inner side of the outer periphery of the first positioning seat, a roller seat connected to the track via a spherical limiting member, a second gear mounted between two rollers in the bottom cavity of the roller seat, a first gear meshing with the top of the second gear, and the first gear being embedded in the roller seat via a motor; A welding assembly, which is disposed on top of the roller seat, is used for welding corrosion-resistant pipes; A pipe fixing assembly is disposed inside the first positioning seat and the second positioning seat, and is used to fix the anti-corrosion pipe. A transmission assembly is disposed within the cavity of the first positioning seat and between the pipe fixing assembly and the track. A switching component is disposed within the bottom cavity of the second drive seat.

[0006] Preferably, the first drive seat and the second drive seat slide against each other at the bottom of the cavity of the mounting seat via a bidirectional lead screw, and the first drive seat and the second drive seat move in opposite directions.

[0007] Preferably, both the first positioning seat and the second positioning seat are configured as clamp structures, and the first positioning seat and the second positioning seat are mirror images of each other along the center of the mounting seat.

[0008] Preferably, the welding assembly includes an adjusting seat fixed to the top of the roller seat. The side cavity of the adjusting seat is connected to an installation head via a first elastic telescopic rod. A positioning rod is fixed to the bottom of the installation head. The inner end face of the bottom of the positioning rod is designed as a slope. An electric push rod is installed on the inner wall of the cavity of the installation head. The end of the electric push rod is connected to a welding gun.

[0009] Preferably, the pipe fixing assembly includes a third gear, which is installed inside the first positioning seat via a motor. A toothed ring meshes with the outer side of the third gear, and the toothed ring is coaxially embedded inside the first positioning seat. A protrusion is fixed on the inner side wall of the toothed ring. A positioning block is installed inside the first positioning seat by means of a spring, and the inner end of the positioning block is correspondingly set with the welding head of the welding torch.

[0010] Preferably, the protrusions are distributed at equal angles on the inner sidewall of the toothed ring, the positioning blocks are distributed at equal angles inside the first positioning seat, the protrusions and positioning blocks are correspondingly arranged, and the outer surface of the protrusions is designed as an arc-shaped structure.

[0011] Preferably, the transmission assembly includes a push block, which is mounted on the side end face of the gear ring. A push rod is correspondingly provided at the outer end of the push block. The push rod is designed with an "L" shape. A second elastic telescopic rod is connected to the vertical side of the push rod. The second elastic telescopic rod is mounted on the inner side wall of the cavity of the first positioning seat. A positioning ring is fixed at the top of the outer end of the push rod.

[0012] Preferably, the positioning ring is coaxially disposed on the outer periphery of the first positioning seat and is installed in the middle of the track. The inner end face of the positioning ring is designed as an inclined surface, and the inclined surface of the positioning ring is fitted with the inclined surface of the positioning rod.

[0013] Preferably, the switching assembly includes a collar, which is threadedly connected to a bidirectional lead screw and installed inside a second drive seat. A bevel gear ring is connected to the cavity of the second drive seat via a rocker arm. A bevel gear meshes with the bevel gear, and a screw is fixed to the bevel gear. A positioning sleeve is threaded on the outer circumference of the screw, and the inner end of the positioning sleeve is located outside the collar.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes a motor-driven bidirectional lead screw and a clutch control ring to allow for the independent adjustment of the first positioning seat position. This ensures that the welding torch baseline aligns with the welding position of the anti-corrosion pipe opening on the first positioning seat. Simultaneously, the positioning block retracts radially via a third gear meshing with a gear ring, achieving adaptive clamping and fixing of anti-corrosion pipes of different diameters. Furthermore, during the retraction of the positioning block, the positioning ring is moved and separated from the positioning rod through the transmission of the push block and push rod. The downward movement of the positioning rod causes the welding torch to move down a corresponding distance synchronously with the change in pipe diameter, maintaining the correspondence between the welding torch and the welding position at all times. This eliminates the need for repeated manual adjustments to the welding torch position, effectively reducing human intervention errors and improving welding positioning accuracy and adaptability. This invention, after positioning and clamping two anti-corrosion pipes, uses a manually operated rocker arm to drive a bevel gear ring, bevel gear, and screw in a coordinated manner. This drives the positioning sleeve to engage with the collar, achieving a clutch-on-clutch switch. At this point, the motor-driven bidirectional lead screw can move the first and second drive seats in opposite directions, completing the automatic docking of the two pipes. This replaces the tedious operation of traditional manual docking and adjustment, significantly shortens docking time, improves pipe docking efficiency and coaxiality, and further ensures the stability of subsequent welding quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the mounting base of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 For the present invention Figure 2 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram of the internal structure of the side of the first positioning seat of the present invention; Figure 6 This is a schematic diagram of the side mounting structure of the positioning sleeve of the present invention; Figure 7 This is a schematic diagram of the side structure of the push rod of the present invention.

[0016] In the diagram: 1. Adjustable telescopic rod; 2. Mounting base; 3. Two-way lead screw; 4. First drive seat; 5. Second drive seat; 6. First positioning seat; 7. Second positioning seat; 8. Track; 9. Roller seat; 10. First gear; 101. Second gear; 111. Adjusting seat; 112. First elastic telescopic rod; 113. Mounting head; 114. Positioning rod; 115. Electric push rod; 116. Welding torch; 121. Third gear; 122. Gear ring; 123. Protrusion; 124. Positioning block; 131. Push block; 132. Push rod; 133. Second elastic telescopic rod; 134. Positioning ring; 141. Collar; 142. Bevel gear ring; 143. Bevel gear; 144. Screw; 145. Positioning sleeve. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-7 The present invention provides a technical solution: a welding device for anti-corrosion pipelines, including an adjustable telescopic rod 1, a mounting base 2 fixed at the top of the adjustable telescopic rod 1, a bidirectional lead screw 3 installed in the top cavity of the mounting base 2 by a motor rotating laterally, a first drive seat 4 and a second drive seat 5 threaded on the bidirectional lead screw 3, a first positioning seat 6 installed at the top of the first drive seat 4, a second positioning seat 7 installed at the top of the second drive seat 5, a track 8 fixed on the inner side of the outer periphery of the first positioning seat 6, a roller seat 9 connected to the track 8 by a spherical limiting member, a second gear 101 installed between two rollers in the bottom cavity of the roller seat 9, a first gear 10 meshing at the top of the second gear 101, and the first gear 10 embedded in the roller seat 9 by a motor; In one embodiment of the present invention, a pipe fixing assembly is disposed inside the first positioning seat 6 and the second positioning seat 7 for fixing the anti-corrosion pipe; the pipe fixing assembly includes a third gear 121, which is installed inside the first positioning seat 6 by a motor, and a toothed ring 122 meshes with the outer side of the third gear 121. The toothed ring 122 is coaxially embedded inside the first positioning seat 6, and a protrusion 123 is fixed on the inner side wall of the toothed ring 122. A positioning block 124 is installed inside the first positioning seat 6 by a spring limit, and the inner end of the positioning block 124 is correspondingly disposed with the welding head of the welding gun 116. The protrusions 123 are distributed at equal angles on the inner sidewall of the toothed ring 122, and the positioning blocks 124 are distributed at equal angles inside the first positioning seat 6. The protrusions 123 and the positioning blocks 124 are set correspondingly, and the outer side of the protrusions 123 is designed as an arc-shaped structure. The first positioning seat 6 and the second positioning seat 7 are both set as clamping structures, and the first positioning seat 6 and the second positioning seat 7 are set in a mirror image along the center of the mounting seat 2. Open the second positioning seat 7, place the first anti-corrosion pipe to be connected inside the second positioning seat 7, and then tighten the second positioning seat 7 with bolts to secure the clamp structure. Initial fixing is achieved through the pipe fixing components in the second positioning seat 7. Using the same method, place the other anti-corrosion pipe to be connected inside the first positioning seat 6, and start the motor to drive the bidirectional lead screw 3 to rotate. At this time, the positioning sleeve 145 and the collar 141 are separated. The rotation of the bidirectional lead screw 3 drives the collar 141 to rotate in its original position. The bidirectional lead screw 3 only drives the first drive seat 4 and the second... The first positioning seat 6 moves until the welding position of the anti-corrosion pipe opening on the first positioning seat 6 is aligned with the reference line of the welding gun 116, thus completing the reference calibration of the welding gun 116. The third gear 121 is driven to rotate by the motor. The third gear 121 meshes with the gear ring 122 and drives the gear ring 122 to rotate. When the gear ring 122 rotates, the protrusion 123 on it contacts the positioning block 124, thereby pushing the positioning block 124 to move radially and converge toward the center of the first positioning seat 6. After the positioning block 124 contacts the outer periphery of the anti-corrosion pipe, the anti-corrosion pipe is clamped and fixed.

[0019] In one embodiment of the present invention, the switching component is disposed in the bottom cavity of the second drive seat 5; the first drive seat 4 and the second drive seat 5 slide against each other at the bottom of the cavity of the mounting seat 2 via the bidirectional lead screw 3, and the first drive seat 4 and the second drive seat 5 move toward each other. The switching assembly includes a collar 141, which is threadedly connected to the bidirectional lead screw 3 and installed inside the second drive seat 5. A bevel gear ring 142 is connected to the cavity of the second drive seat 5 via a rocker arm. A bevel gear 143 meshes with the bevel gear ring 142. A screw 144 is fixed to the bevel gear 143. A positioning sleeve 145 is threaded on the outer circumference of the screw 144, and the inner end of the positioning sleeve 145 is located outside the collar 141.

[0020] Manually turn the rocker arm on the outside of the second drive seat 5. The rocker arm drives the bevel gear ring 142 to rotate. The bevel gear ring 142 meshes with the bevel gear 143 and drives the screw 144 to rotate. The screw 144 pushes the positioning sleeve 145 to abut against the collar 141, so that the collar 141 is fixed to the second drive seat 5. Start the motor again to drive the bidirectional lead screw 3 to rotate. The bidirectional lead screw 3 simultaneously drives the first drive seat 4 and the second drive seat 5 to move in opposite directions along the mounting seat 2 until the joint ends of the two anti-corrosion pipes are in contact.

[0021] In one embodiment of the present invention, a welding assembly is disposed on the top of the roller seat 9 for welding anti-corrosion pipes; the welding assembly includes an adjusting seat 111, which is fixed on the top of the roller seat 9. The side cavity of the adjusting seat 111 is connected to an installation head 113 via a first elastic telescopic rod 112. A positioning rod 114 is fixed to the bottom of the installation head 113. The inner end face of the bottom of the positioning rod 114 is designed as a slope. An electric push rod 115 is installed on the inner wall of the cavity of the installation head 113. The end of the electric push rod 115 is connected to a welding gun 116. The motor is started to drive the first gear 10 to rotate. The first gear 10 meshes with the second gear 101 and drives it to rotate. When the second gear 101 rotates, it drives the two rollers in the roller seat 9 to rotate, which in turn drives the adjusting seat 111 to run one revolution along the track 8. At the same time, the electric push rod 115 drives the welding gun 116 to reciprocate, realizing the welding operation of one revolution of the anti-corrosion pipe opening.

[0022] In one embodiment of the present invention, the transmission component is disposed in the cavity of the first positioning seat 6, and the transmission component is disposed between the pipe fixing component and the track 8. The transmission assembly includes a push block 131, which is mounted on the side end face of the gear ring 122. A push rod 132 is correspondingly provided on the outer end of the push block 131. The push rod 132 is designed with an "L" shape structure. A second elastic telescopic rod 133 is connected to the vertical side of the push rod 132. The second elastic telescopic rod 133 is mounted on the inner side wall of the cavity of the first positioning seat 6. A positioning ring 134 is fixed to the top of the outer end of the push rod 132. The positioning ring 134 is coaxially arranged on the outer periphery of the first positioning seat 6 and is installed in the middle of the track 8. The inner end face of the positioning ring 134 is designed as an inclined surface. The inclined surface of the positioning ring 134 fits against the inclined surface of the positioning rod 114. During the retraction of the positioning block 124, the pusher 132 is moved by the pusher 131, and the pusher 132 causes the positioning ring 134 to move, so that the inclined surface of the positioning ring 134 separates from the inclined surface of the positioning rod 114. The positioning rod 114 moves down under the action of the first elastic telescopic rod 112, which in turn drives the installation head 113 and the welding torch 116 to move down synchronously. The downward distance matches the retraction distance of the positioning block 124, ensuring that the welding torch 116 is always aligned with the welding position of the anti-corrosion pipe opening.

[0023] Working principle: First, open the second positioning seat 7, place the first anti-corrosion pipe to be connected inside the second positioning seat 7, and then use bolts to tighten and fix the second positioning seat 7 with the clamp structure. The pipe fixing component in the second positioning seat 7 completes the initial fixing. In the same way, place the other anti-corrosion pipe to be connected inside the first positioning seat 6, start the motor to drive the bidirectional screw 3 to rotate. At this time, the positioning sleeve 145 and the collar 141 are in a separated state. The rotation of the bidirectional screw 3 drives the collar 141 to rotate in place. The bidirectional screw 3 only drives the first drive seat 4 and the first positioning seat 6 to move until the welding position of the anti-corrosion pipe end on the first positioning seat 6 is aligned with the reference line of the welding gun 116, and the reference calibration of the welding gun 116 is completed. Subsequently, the motor drives the third gear 121 to rotate, the third gear 121 meshes with the gear ring 122 and drives the gear ring 122 to rotate. When the gear ring 122 rotates, the protrusion 123 on it contacts the positioning block 124, thereby pushing the positioning block 124 to move radially and retract towards the center of the first positioning seat 6. After the positioning block 124 contacts the outer periphery of the anti-corrosion pipe, it achieves clamping and fixing of the anti-corrosion pipe. During the retraction process of the positioning block 124, the pusher 131 pushes the push rod 132 to move, and the push rod 132 drives the positioning ring 134 to move, so that the inclined surface of the positioning ring 134 separates from the inclined surface of the positioning rod 114. The positioning rod 114 moves down under the action of the first elastic telescopic rod 112, thereby driving the installation head 113 and the welding gun 116 to move down synchronously, and the downward distance matches the retraction distance of the positioning block 124, ensuring that the welding gun 116 is always aligned with the welding position of the anti-corrosion pipe opening. After the two anti-corrosion pipes to be connected are positioned and clamped, manually turn the rocker arm on the outside of the second drive seat 5. The rocker arm drives the bevel gear ring 142 to rotate. The bevel gear ring 142 meshes with the bevel gear 143 and drives the screw 144 to rotate. The screw 144 pushes the positioning sleeve 145 to abut against the collar 141, so that the collar 141 is fixed with the second drive seat 5. Start the motor again to drive the bidirectional screw 3 to rotate. The bidirectional screw 3 simultaneously drives the first drive seat 4 and the second drive seat 5 to move in opposite directions along the mounting seat 2 until the connecting ends of the two anti-corrosion pipes are in contact. After the anti-corrosion pipeline is connected, the welding torch 116 is aligned with the welding position. The motor is started to drive the first gear 10 to rotate. The first gear 10 meshes with the second gear 101 and drives it to rotate. When the second gear 101 rotates, it drives the two rollers in the roller seat 9 to rotate, which in turn drives the adjusting seat 111 to run one revolution along the track 8. At the same time, the electric push rod 115 drives the welding torch 116 to reciprocate, realizing the welding operation of one revolution of the anti-corrosion pipeline opening.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding device for corrosion-resistant pipelines, comprising an adjustable telescopic rod (1), wherein a mounting base (2) is fixed to the top end of the adjustable telescopic rod (1), characterized in that: A bidirectional lead screw (3) is installed in the top cavity of the mounting base (2) by a motor rotating laterally. A first drive seat (4) and a second drive seat (5) are threaded on the bidirectional lead screw (3). A first positioning seat (6) is installed on the top of the first drive seat (4), and a second positioning seat (7) is installed on the top of the second drive seat (5). A track (8) is fixed on the inner side of the outer periphery of the first positioning seat (6). A roller seat (9) is connected to the track (8) by a spherical limiting member. A second gear (101) is installed between two rollers in the bottom cavity of the roller seat (9). A first gear (10) meshes with the top of the second gear (101). The first gear (10) is embedded in the roller seat (9) by a motor. A welding assembly, which is disposed on top of the roller seat (9), is used for welding anti-corrosion pipes; Pipe fixing assembly, which is disposed inside the first positioning seat (6) and the second positioning seat (7) for fixing the anti-corrosion pipe; The transmission assembly is disposed in the cavity of the first positioning seat (6) and is disposed between the pipe fixing assembly and the track (8); A switching component is disposed in the bottom cavity of the second drive seat (5).

2. The welding device for corrosion-resistant pipelines according to claim 1, characterized in that: The first drive seat (4) and the second drive seat (5) slide against each other at the bottom of the cavity of the mounting seat (2) via a bidirectional lead screw (3), and the first drive seat (4) and the second drive seat (5) move in opposite directions.

3. The welding device for corrosion-resistant pipelines according to claim 2, characterized in that: The first positioning seat (6) and the second positioning seat (7) are both configured as clamp structures, and the first positioning seat (6) and the second positioning seat (7) are mirror images of each other along the center of the mounting seat (2).

4. The welding device for corrosion-resistant pipelines according to claim 3, characterized in that: The welding assembly includes an adjustment seat (111), which is fixed to the top of the roller seat (9). The side cavity of the adjustment seat (111) is connected to an installation head (113) via a first elastic telescopic rod (112). A positioning rod (114) is fixed to the bottom of the installation head (113). The bottom inner end face of the positioning rod (114) is designed as a slope. An electric push rod (115) is installed on the inner wall of the cavity of the installation head (113). The end of the electric push rod (115) is connected to a welding torch (116).

5. A welding device for corrosion-resistant pipelines according to claim 4, characterized in that: The pipe fixing assembly includes a third gear (121), which is installed inside the first positioning seat (6) by a motor. A toothed ring (122) meshes with the outer side of the third gear (121). The toothed ring (122) is coaxially embedded inside the first positioning seat (6). A protrusion (123) is fixed on the inner side wall of the toothed ring (122). A positioning block (124) is installed inside the first positioning seat (6) by a spring limit. The inner end of the positioning block (124) is correspondingly set with the welding head of the welding torch (116).

6. A welding device for corrosion-resistant pipelines according to claim 5, characterized in that: The protrusions (123) are distributed at equal angles on the inner sidewall of the toothed ring (122), and the positioning blocks (124) are distributed at equal angles inside the first positioning seat (6). The protrusions (123) and the positioning blocks (124) are arranged correspondingly, and the protrusions (123) are designed with an arc-shaped structure on the outside.

7. A welding device for corrosion-resistant pipelines according to claim 6, characterized in that: The transmission assembly includes a push block (131), which is mounted on the side end face of the gear ring (122). A push rod (132) is correspondingly provided on the outer end of the push block (131). The push rod (132) is designed with an "L" shape. A second elastic telescopic rod (133) is connected to the vertical side of the push rod (132). The second elastic telescopic rod (133) is mounted on the inner side wall of the cavity of the first positioning seat (6). A positioning ring (134) is fixed to the top of the outer end of the push rod (132).

8. A welding device for corrosion-resistant pipelines according to claim 7, characterized in that: The positioning ring (134) is coaxially arranged on the outer periphery of the first positioning seat (6), and the positioning ring (134) is installed in the middle of the track (8). The inner end face of the positioning ring (134) is designed as an inclined surface, and the inclined surface of the positioning ring (134) is fitted with the inclined surface of the positioning rod (114).

9. A welding device for corrosion-resistant pipelines according to claim 8, characterized in that: The switching assembly includes a collar (141), which is threadedly connected to a bidirectional lead screw (3) and installed inside a second drive seat (5). A bevel gear ring (142) is connected to the cavity of the second drive seat (5) via a rocker arm. A bevel gear (143) meshes with the bevel gear ring (142). A screw (144) is fixed to the bevel gear (143). A positioning sleeve (145) is threaded on the outer circumference of the screw (144). The inner end of the positioning sleeve (145) is located outside the collar (141).

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