Pipeline welding butt joint device

Abstract

The invention provides a pipeline welding butt joint device, and relates to the technical field of pipeline welding butt joint positioning, the pipeline welding butt joint device comprises a supporting mechanism, the supporting mechanism comprises an L-shaped supporting frame, a butt joint mechanism is movably installed on the L-shaped supporting frame, a pair of arc-shaped sliding grooves are fixedly installed on the two sides of the top of the L-shaped supporting frame, and the butt joint mechanism comprises an arc-shaped supporting baffle. And arc-shaped racks are fixedly installed at the left end and the right end of an arc-shaped supporting baffle, the arc-shaped supporting baffle is installed between the two arc-shaped sliding grooves in a sliding mode, and the arc-shaped racks are installed in the arc-shaped sliding grooves in a sliding mode. Accurate butt joint is controlled; the second clamping head obliquely slides on the first clamping head, so that a ladder-shaped or conical special-shaped pipeline can be clamped, and accurate butt joint is provided.

Description

Technical Field

[0001] This invention relates to the field of pipeline welding and positioning technology, and in particular to a pipeline welding and positioning device. Background Technology

[0002] Pipelines are indispensable basic components in fields such as oil and gas transportation, chemical production, urban pipeline network construction, shipbuilding, and power engineering. The quality of pipeline circumferential welds directly affects the pressure-bearing performance, sealing reliability, and long-term operational safety of the entire pipeline system, and precise pipe joint alignment is the core prerequisite for ensuring weld quality. Currently, in industrial production and on-site construction, pipeline welding and joining mainly rely on manual alignment, ordinary clamps for fixing, or traditional external alignment tools to complete the assembly operation, which is difficult to meet the high-precision, high-efficiency, and high-stability construction requirements of modern engineering.

[0003] Existing pipe docking devices generally suffer from several technical defects: First, low centering and positioning accuracy, relying on manual visual inspection or simple mechanical adjustments, cannot effectively guarantee the coaxiality of the two pipes, easily leading to problems such as pipe end misalignment and uneven gaps, directly resulting in poor weld formation, incomplete penetration, slag inclusions, and other welding defects, increasing subsequent repair costs. Second, narrow applicability; most devices are designed only for a single pipe diameter, unable to quickly adjust to pipes of different diameters and wall thicknesses, exhibiting extremely poor versatility, and the clamping force is uncontrollable, easily causing pipe wall deformation or loosening of the clamp. Third, cumbersome operation procedures; traditional docking devices require multiple people to complete clamping, adjustment, and tightening steps, resulting in long assembly and disassembly times, especially in complex working conditions such as field operations and confined spaces, significantly reducing construction efficiency. Fourth, low functional integration; possessing only simple clamping functions, lacking integrated functions such as axial fine adjustment, circumferential rotation, and posture correction, making it impossible to efficiently connect with automated welding equipment.

[0004] Based on this, the present invention provides a pipe welding and docking device. Summary of the Invention

[0005] To address the aforementioned technical problems, the present invention provides a pipe welding and docking device, including a support mechanism. The support mechanism includes an L-shaped support frame, on which a docking mechanism is movably mounted. A pair of arc-shaped sliding grooves are fixedly mounted on both sides of the top of the L-shaped support frame. The docking mechanism includes an arc-shaped support baffle, with arc-shaped racks fixedly mounted on the left and right ends of the arc-shaped support baffle. The arc-shaped support baffle is slidably mounted between the two arc-shaped sliding grooves, and the arc-shaped racks are slidably mounted within the arc-shaped sliding grooves.

[0006] Furthermore, a clamping mounting plate is fixedly installed on the inner wall of the arc-shaped support baffle, and arc-shaped mounting grooves are fixedly installed at both ends of the inner wall of the arc-shaped support baffle. A pair of sliding mounting frames are slidably installed on the inner wall of the arc-shaped support baffle. The sliding mounting frames are slidably installed between the two arc-shaped mounting grooves. A clamping mounting plate is fixedly installed on the sliding mounting frames. Two eccentric pulleys are rotatably installed on the left and right sides of the clamping mounting plate. A clamping movable plate is rotatably installed at the front end of the two eccentric pulleys. A clamping hydraulic rod is fixedly installed on the clamping movable plate. A first clamping head is fixedly installed on the clamping hydraulic rod. A second clamping head is slidably installed laterally on the first clamping head.

[0007] Furthermore, the first clamping head has an inclined sliding groove inside, and an adjusting electric push rod is fixedly installed at the bottom of the inclined sliding groove. An extension sliding rod is fixedly installed at the rear end of the second clamping head, and an inclined slider is fixedly installed on the sliding rod. The inclined slider slides in cooperation with the inclined sliding groove. An adjusting sliding groove is provided at the rear end of the extension sliding rod, and a connecting slider is fixedly installed at the front end of the adjusting electric push rod. The connecting slider slides in cooperation with the adjusting sliding groove.

[0008] Furthermore, the first clamping head and the second clamping head are provided with V-shaped positioning grooves on their inner sides, and friction rods are fixedly installed in the positioning grooves. The front end of the first clamping head is provided with an arc-shaped warp.

[0009] Furthermore, a torsion adjustment motor is fixedly installed at both ends of the clamping mounting plate, and a pulley is fixedly installed on the torsion adjustment motor. The torsion adjustment motor and the eccentric pulley are connected by a belt.

[0010] Furthermore, a pair of drive gears are rotatably mounted on the inner and outer walls of the arc-shaped groove on the L-shaped support frame. The inner and outer walls of the arc-shaped rack are provided with gear patterns. The drive gears mesh with the gear patterns on the arc-shaped rack. A drive motor is fixedly mounted on the L-shaped support frame. The drive motor is fixedly connected to the drive gears. A pulley is fixedly mounted on the drive gears. Each pair of drive gears is connected by an arc-shaped transmission belt.

[0011] Furthermore, adjustable hydraulic rods are fixedly installed on both ends of the outer wall of the arc-shaped support baffle. Two arc-shaped connecting rods are hinged to the adjustable hydraulic rods, and the arc-shaped connecting rods are respectively hinged to two sliding mounting brackets on the inner wall of the arc-shaped support baffle.

[0012] The beneficial effects of this invention compared with the prior art are: (1) This invention can clamp pipes of different diameters or shapes and control their accurate docking by using three pairs of first clamping heads and second clamping heads and the V-shaped grooves on them; (2) This invention can clamp stepped or conical irregular pipes and provide accurate docking by using the second clamping head to slide obliquely on the first clamping head; (3) This invention can rotate the first clamping head and the second clamping head by using two eccentric pulleys to rotate and adjust the polygonal pipes with deviations in rotation angle, thereby improving docking accuracy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the front structure of the present invention.

[0014] Figure 2 This is a schematic diagram of the top structure of the present invention.

[0015] Figure 3 This is a schematic diagram of the overall structure of the present invention.

[0016] Figure 4 This is a schematic diagram of the rear structure of the present invention.

[0017] Figure 5 This is a partial cross-sectional view of the docking mechanism of the present invention.

[0018] Figure 6 This is a schematic diagram of a half-section of the clamping head of the present invention.

[0019] Reference numerals: 1-Support mechanism; 2-Docking mechanism; 101-L-shaped support frame; 102-Arc-shaped transmission belt; 103-Drive motor; 104-Drive gear; 201-Arc-shaped support baffle; 202-Arc-shaped rack; 203-Arc-shaped mounting groove; 204-Sliding mounting frame; 205-Clamping mounting plate; 206-Torsion adjustment motor; 207-Eccentric pulley; 208-Clamping movable plate; 209-Clamping hydraulic rod; 210-First clamping head; 211-Second clamping head; 212-Friction rod; 213-Adjusting electric push rod; 214-Inclined groove; 215-Arc-shaped connecting rod; 216-Adjusting hydraulic rod. Detailed Implementation

[0020] The technical solution provided by the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] like Figures 1-6As shown, a pipe welding and docking device includes a support mechanism 1, which includes an L-shaped support frame 101. A docking mechanism 2 is movably mounted on the L-shaped support frame 101. A pair of arc-shaped sliding grooves are fixedly installed on both sides of the top of the L-shaped support frame 101. The docking mechanism 2 includes an arc-shaped support baffle 201, and arc-shaped racks 202 are fixedly installed at both ends of the arc-shaped support baffle 201. The inner and outer walls of the arc-shaped racks 202 are provided with gear patterns. The arc-shaped support baffle 201 is slidably installed between the two arc-shaped sliding grooves, and the arc-shaped racks 202 are slidably installed in the arc-shaped sliding grooves. A pair of drive gears 104 are rotatably mounted laterally on both the inner and outer walls of the arc-shaped sliding grooves on the L-shaped support frame 101. Gear 104 meshes with the gear pattern on the arc-shaped rack 202. A drive motor 103 is fixedly installed on the L-shaped support frame 101. The drive motor 103 is fixedly connected to the drive gear 104. A pulley is fixedly installed on the drive gear 104. Each pair of drive gears 104 is connected by an arc-shaped transmission belt 102. By starting the drive motor 103, the drive gear 104 is driven to rotate. When the drive gear 104 rotates, it drives the arc-shaped support baffle 201 to rotate laterally on the L-shaped support frame 101. The position of the arc-shaped support baffle 201 on the L-shaped support frame 101 can be adjusted according to the shape of the pipe and the processing space to adjust the support direction and angle of the docking mechanism 2.

[0022] like Figures 1-6 As shown, a clamping mounting plate 205 is fixedly installed on the inner wall of the arc-shaped support baffle 201. The clamping mounting plate 205 is fixedly installed in the middle section of the inner wall, dividing the arc-shaped support baffle 201 into upper and lower parts. Arc-shaped mounting grooves 203 are fixedly installed at the left and right ends of the inner wall of the arc-shaped support baffle 201. A pair of sliding mounting brackets 204 are slidably installed on the inner wall of the arc-shaped support baffle 201. The sliding mounting brackets 204 are slidably installed between the two arc-shaped mounting grooves 203. The two sliding mounting brackets 204 are respectively slidably installed in the upper and lower parts of the arc-shaped support baffle 201. The clamping mounting plate 205 is fixedly installed on the sliding mounting bracket 204. Two eccentric pulleys 207 are rotatably installed on the left and right sides of the clamping mounting plate 205. Torque adjustment motors 206 are fixedly installed at both ends. Pulleys are fixedly installed on the torsion adjustment motors 206. The torsion adjustment motors 206 and eccentric pulleys 207 are connected by a belt. The front ends of the two eccentric pulleys 207 are rotatably mounted with clamping movable plates 208. Clamping hydraulic rods 209 are fixedly installed on clamping movable plates 208. A first clamping head 210 is fixedly installed on clamping hydraulic rods 209. A second clamping head 211 is laterally slidably installed on the first clamping head 210. Driven by clamping hydraulic rods 209, the first clamping head 210 and the second clamping head 211 are used to clamp the outer walls of the two pipe sections to be welded. By clamping and positioning the outer walls of the pipes at three points, the connection of the two pipe sections can be more precise.

[0023] like Figures 1-6 As shown, the first clamping head 210 and the second clamping head 211 are provided with V-shaped positioning grooves on their inner sides. The V-shaped positioning grooves are used to increase the contact area between the first clamping head 210 and the second clamping head 211 and the pipe, preventing slippage during clamping. At the same time, the V-shaped positioning grooves can clamp the corners of rectangular or other polygonal pipes, improving the docking accuracy. A friction rod 212 is fixedly installed in the positioning groove. The friction rod 212 is used to further increase the friction between the first clamping head 210 and the pipe. At the same time, the friction rod 212 can grind the debris attached to the outer wall of the pipe or the burrs at the pipe opening, preventing foreign objects from protruding and causing the clamped pipe to shift.

[0024] like Figures 1-6 As shown, when clamping polygonal pipes that need to be twisted and aligned, two twisting adjustment motors 206 can be started to drive two eccentric pulleys 207 to rotate in different directions, causing the clamping movable plate 208 to rotate on the clamping mounting plate 205. This aligns the V-grooves on the first clamping head 210 and the second clamping head 211 with the corners of the two pipe sections. Then, by starting the clamping hydraulic rod 209, the first clamping head 210 and the second clamping head 211 are tightly clamped to the outer wall of the pipe. After that, the twisting adjustment motors 206 are started to drive the eccentric pulleys 207 to rotate in the opposite direction, causing the clamping movable plate 208 to rotate in the opposite direction back to its original angle. During this process, the clamping of the first clamping head 210 and the second clamping head 211 causes the two pipe sections to twist synchronously, aligning the corners of the pipes and allowing the pipes to be accurately connected.

[0025] like Figures 1-6 As shown, the first clamping head 210 has an arc-shaped warp at its front end, and an inclined groove 214 is provided inside the first clamping head 210. An adjusting electric push rod 213 is fixedly installed at the bottom of the inclined groove 214. An extension sliding rod is fixedly installed at the rear end of the second clamping head 211, and an inclined slider is fixedly installed on the sliding rod. The inclined slider slides in cooperation with the inclined groove 214. An adjusting groove is provided at the rear end of the extension sliding rod, and a connecting slider is fixedly installed at the front end of the adjusting electric push rod 213. The connecting slider slides in cooperation with the adjusting groove. By activating the adjusting electric push rod... The push rod 213 pushes the second clamping head 211 to slide at the front end of the first clamping head 210. It slides in the inclined groove 214 through the inclined slider, which drives the second clamping head 211 to slide outward on the first clamping head 210 at the same time, so that the clamping diameter of the second clamping head 211 is higher than that of the first clamping head 210. This is used to clamp and connect irregularly shaped pipes such as stepped or conical ones. The warping of the front end of the first clamping head 210 can make the first clamping head 210 fit better against the outer wall of the irregularly shaped pipe, thus improving the docking accuracy.

[0026] like Figures 1-6As shown, adjustable hydraulic rods 216 are fixedly installed on both ends of the outer wall of the arc-shaped support baffle 201. Two arc-shaped connecting rods 215 are hinged to the adjustable hydraulic rods 216. The arc-shaped connecting rods 215 are respectively hinged to two sliding mounting brackets 204 on the inner wall of the arc-shaped support baffle 201. By activating the extension and retraction of the adjustable hydraulic rods 216, the two sliding mounting brackets 204 can be driven to slide on the inner wall of the arc-shaped support baffle 201 through the arc-shaped connecting rods 215. The angle of the two sliding mounting brackets 204 can be adjusted synchronously. The clamping position of the three sets of first clamping heads 210 and second clamping heads 211 on the pipeline can be adjusted according to the shape and diameter of the pipeline, thereby improving the applicability of the equipment.

Claims

1. A pipe welding butt joint device, comprising a supporting mechanism (1), the supporting mechanism (1) comprising an L-shaped supporting frame (101), a butt joint mechanism (2) being movably mounted on the L-shaped supporting frame (101), characterized in that, The L-shaped support frame (101) has a pair of arc-shaped sliding grooves fixedly installed on both sides of its top. The docking mechanism (2) includes an arc-shaped support baffle (201). Arc-shaped racks (202) are fixedly installed at the left and right ends of the arc-shaped support baffle (201). The arc-shaped support baffle (201) is slidably installed between the two arc-shaped sliding grooves, and the arc-shaped racks (202) are slidably installed in the arc-shaped sliding grooves. The inner wall of the arc-shaped support baffle (201) is fixedly installed with a clamping mounting plate (205). The left and right ends of the inner wall of the arc-shaped support baffle (201) are fixedly installed with arc-shaped mounting grooves (203). A pair of sliding mounting frames (204) are slidably installed on the inner wall of the arc-shaped support baffle (201). The sliding mounting frames (204) are slidably installed between the two arc-shaped mounting grooves (203). The clamping mounting plate (205) is fixedly installed on the sliding mounting frame (204). Two eccentric pulleys (207) are rotatably installed on the left and right sides of the clamping mounting plate (205). The front ends of the two eccentric pulleys (207) are rotatably installed with a clamping movable plate (208). A clamping hydraulic rod (209) is fixedly installed on the clamping movable plate (208). A first clamping head (210) is fixedly installed on the clamping hydraulic rod (209). A second clamping head (211) is slidably installed on the first clamping head (210).

2. A pipe welding butt joining apparatus according to claim 1, wherein The first clamping head (210) has an inclined slide groove (214) inside. An adjusting electric push rod (213) is fixedly installed at the bottom of the inclined slide groove (214). An extension sliding rod is fixedly installed at the rear end of the second clamping head (211). An inclined slider is fixedly installed on the sliding rod. The inclined slider slides in cooperation with the inclined slide groove (214). An adjusting slide groove is provided at the rear end of the extension sliding rod. A connecting slider is fixedly installed at the front end of the adjusting electric push rod (213). The connecting slider slides in cooperation with the adjusting slide groove.

3. A pipe welding butt joining apparatus according to claim 1, wherein The first clamping head (210) and the second clamping head (211) are provided with V-shaped positioning grooves on their inner sides, and friction rods (212) are fixedly installed in the positioning grooves.

4. A pipe welding butt joining apparatus according to claim 1, wherein The front end of the first clamping head (210) is provided with an arc-shaped warp.

5. A pipe welding butt joining apparatus according to claim 1, wherein The clamping mounting plate (205) has a torsion adjustment motor (206) fixedly installed at both ends. A pulley is fixedly installed on the torsion adjustment motor (206). The torsion adjustment motor (206) and the eccentric pulley (207) are connected by a belt.

6. A pipe welding butt joining apparatus according to claim 1, wherein The inner and outer walls of the arc-shaped groove on the L-shaped support frame (101) are both horizontally rotatably equipped with a pair of drive gears (104). The inner and outer walls of the arc-shaped rack (202) are provided with gear patterns. The drive gears (104) mesh with the gear patterns on the arc-shaped rack (202). The drive motor (103) is fixedly installed on the L-shaped support frame (101). The drive motor (103) is fixedly connected to the drive gears (104). The drive gears (104) are fixedly equipped with pulleys. Each pair of drive gears (104) is connected by an arc-shaped transmission belt (102).

7. A pipe welding and butt welding device according to claim 1, characterized in that, The two ends of the outer wall of the arc-shaped support baffle (201) are fixedly installed with adjusting hydraulic rods (216). Two arc-shaped connecting rods (215) are hinged on the adjusting hydraulic rods (216). The arc-shaped connecting rods (215) are respectively hinged to two sliding mounting brackets (204) on the inner wall of the arc-shaped support baffle (201).

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