A welding auxiliary device for marine U-shaped pipe

Abstract

The application belongs to the technical field of pipe processing, in particular to a marine U-shaped pipe welding auxiliary device, which comprises a special-shaped plate, first clamping blocks are slidably arranged on both sides of the upper end of the special-shaped plate, a second clamping block is slidably arranged at the middle of the upper end of the special-shaped plate, a sliding assembly is arranged at the lower end of the special-shaped plate, the sliding assembly comprises a U-shaped frame fixed to the lower end of the special-shaped plate, a second rectangular plate is slidably arranged at the lower end of the U-shaped frame, a rectangular frame is rotatably arranged at the lower end of the second rectangular plate, a clamping assembly is arranged at the upper end of the second rectangular plate, the clamping assembly comprises two U-shaped blocks slidably arranged at the upper end of the second rectangular plate, arc-shaped plates are rotatably arranged at both ends of the opposite side of each U-shaped block, and a welding head is arranged at the upper end of the clamping assembly. The arc-shaped pipe can be moved by driving the special-shaped plate 1, the two ends of the arc-shaped pipe can be welded, and the symmetrical effect of the straight pipe welded on both sides of the arc-shaped pipe can be ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of pipe processing, in particular to a welding auxiliary device for U-shaped pipe for ships. BACKGROUND

[0002] Various pipelines of a ship, such as seawater pipelines, fresh water pipelines, fuel pipelines, etc., need to be stably installed through U-shaped pipe clamps, and the welding principle is mainly to heat and melt the solid solder wire by a heated soldering iron, and to ensure that the melted solder wire can smoothly flow into the middle of the metal to be welded by the main action of the flux, so that a relatively reliable and firm welding point can be formed after complete cooling.

[0003] A patent application with publication number CN109967956B discloses a U-shaped pipe welding auxiliary device and a welding auxiliary method, which limits the rotation force of the control gear through the tooth groove of the top gear, avoids the uncontrollable force applied by a person or equipment to the control gear to cause unstable rotation speed of the control gear, and controls the distance of each rotation of the control gear by clamping the tooth groove each time the top gear rotates, so as to realize controllable equidistance rotation under the condition of eliminating uncontrollable force, and avoid the influence of too fast or too slow rotation of the U-shaped pipe on product quality and production efficiency during welding.

[0004] In the above-mentioned prior art, when welding the U-shaped pipe, two straight pipes need to be welded at both ends of the arc-shaped pipe, and when welding thicker pipes, the inside of the pipe needs to be welded, and the arc-shaped pipe and the straight pipe need to be spliced during welding. When welding a U-shaped pipe with a large size, manual splicing is often required, which cannot guarantee the splicing accuracy and cannot guarantee the symmetry effect of the straight pipe welded on both sides of the arc-shaped pipe.

[0005] Therefore, the application provides a welding auxiliary device for U-shaped pipe for ships. SUMMARY

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The technical scheme adopted by the present application to solve its technical problems is: the ship U-shaped pipe welding auxiliary device, including a special-shaped plate, the middle part of the special-shaped plate is V-shaped, the upper end of the special-shaped plate is slidably provided with a first clamping block on both sides, the two first clamping blocks are 45 degrees, the upper middle part of the special-shaped plate is slidably provided with a second clamping block, the lower end of the special-shaped plate is provided with a sliding assembly, the sliding assembly includes a U-shaped frame fixedly connected to the lower end of the special-shaped plate, the lower end of the U-shaped frame is slidably provided with a second rectangular plate, the lower end of the second rectangular plate is rotatably provided with a rectangular frame, the upper end of the second rectangular plate is provided with a clamping assembly, the clamping assembly includes two U-shaped blocks slidably provided on the upper end of the second rectangular plate, the opposite sides of the U-shaped blocks are rotatably provided with arc-shaped plates at both ends, and the upper end of the clamping assembly is provided with a welding head.

[0008] Preferably, one side of the first clamping block is fixedly connected with a first cylindrical rod, the first cylindrical rod is slidably arranged in the middle part of the special-shaped plate, one end of the first cylindrical rod away from the first clamping block is fixedly connected with a first rectangular sliding block, the first rectangular sliding block is slidably arranged on one side of the special-shaped plate, the upper middle part of the U-shaped frame is provided with a gear set, the gear set includes two first rectangular strips, a first gear is rotatably arranged between the two first rectangular strips, one side of the first gear is fixedly connected with the output end of a first motor through a pin shaft, the first motor is fixedly connected with the U-shaped frame through a motor base, one side of the first gear is engaged with a second gear, the two sides of the first gear and the second gear are respectively engaged with third gears, the third gears are respectively fixedly connected with second rectangular strips, one side of the first rectangular sliding block is rotatably provided with a first rectangular cylinder, and the second rectangular strips are slidably arranged in the first rectangular cylinder.

[0009] Preferably, the upper end of the second clamping block is fixedly connected with a second cylindrical rod, the upper end of the second clamping block is provided with a first rectangular plate, the second cylindrical rod is slidably penetrated in the middle part of the first rectangular plate, the two sides of the first rectangular plate are fixedly connected with first rectangular blocks, the output end of an electric telescopic rod is fixedly connected to the lower end of the first rectangular block, and the electric telescopic rod is fixedly connected to the upper end of the special-shaped plate.

[0010] Preferably, the lower end of the second cylindrical rod is sleeved with a second spring, and the second clamping block is fixedly connected with the first rectangular plate through the second spring.

[0011] Preferably, the interior of the two sides of the first rectangular plate is slidably provided with an inclined edge block, and the inclined edge block is fixedly connected to the interior of the first rectangular plate through a first spring.

[0012] Preferably, one side of the second clamping block is fixedly connected with a second rubber pad, and one side of the first clamping block is fixedly connected with a first rubber pad.

[0013] Preferably, first electric sliding blocks are fixed to the two sides of the U-shaped frame, first electric sliding rails are fixed to the upper end of the second rectangular plate corresponding to the positions of the first electric sliding blocks, and the first electric sliding blocks are slidably arranged on the upper end of the first electric sliding rails.

[0014] Preferably, a second motor is fixed inside the rectangular frame, and the output end of the second motor penetrates through the upper end of the rectangular frame and is fixed to the second rectangular plate.

[0015] Preferably, second rectangular cylinders are fixed to the two sides of the upper end of the second rectangular plate, a hydraulic cylinder is arranged inside the second rectangular cylinder, a third rectangular strip is slidably arranged inside the second rectangular cylinder, a second electric sliding rail is fixed to the opposite side of the third rectangular strip, a circular ring is fixed to the opposite end of the second electric sliding rail, a circular plate is rotatably arranged in the middle of the circular ring, a rectangular hole is formed in the middle of the circular plate, a second rectangular sliding block is slidably arranged inside the rectangular hole, the welding head is arranged in the middle of the second rectangular sliding block, a fourth rectangular strip is fixed to one side of the circular plate, a second rectangular block is fixed to the upper end of the second rectangular sliding block, a third rectangular block is fixed to the upper end of the fourth rectangular strip, a screw rod is threadedly connected to the middle of the third rectangular block, the screw rod is rotatably arranged on one side of the second rectangular block, a fifth rectangular strip is fixed to the end of the fourth rectangular strip away from the circular plate, a third rectangular cylinder is fixed to the upper end of the rectangular frame corresponding to the position of the fifth rectangular strip, the fifth rectangular strip is slidably arranged in the third rectangular cylinder, the welding head is fixed to the welding machine through a wire harness, and the welding machine is fixed to one side of the rectangular frame.

[0016] Preferably, a third cylindrical rod is fixed to one side of the U-shaped block, fourth rectangular blocks are rotatably arranged on the two sides of the third cylindrical rod, the fourth rectangular blocks are rotatably arranged on one side of the arc-shaped plate, a third rubber pad is fixed to the side of the arc-shaped plate away from the fourth rectangular blocks, a second electric sliding block is slidably arranged at the lower end of the second electric sliding rail, a sixth rectangular strip is fixed to the lower end of the second electric sliding block, the sixth rectangular strip is fixed to the U-shaped block through an extension rod, a third spring is sleeved outside the extension rod, third rectangular plates are fixed to the two sides of the sixth rectangular strip, and the third rectangular plates are arranged on one side of the fourth rectangular blocks, respectively.

[0017] The beneficial effects of the present application are as follows:

[0018] 1. A marine U-shaped pipe welding auxiliary device, the arc-shaped pipe is placed on the upper end of the first clamping block, then the second clamping block is driven to extrude and fix the arc-shaped pipe, then the arc-shaped plate is driven to fix the straight pipe, then the straight pipe is driven to move downward until it is spliced with one side of the arc-shaped pipe, then the second rectangular plate drives the arc-shaped pipe at the upper end of the special-shaped plate to rotate synchronously with the straight pipe clamped in the middle of the arc-shaped plate, the welding head welds the internal splicing part of the straight pipe and the arc-shaped pipe, then the U-shaped frame drives the arc-shaped pipe at the upper end of the special-shaped plate to move to one side on the upper end of the second rectangular plate, so that the end to be welded on the other side of the arc-shaped pipe is located at the lower end of the two arc-shaped plates, then the above steps are repeated to weld the straight pipe on the other end of the arc-shaped pipe, the straight pipe and the arc-shaped pipe can be clamped and spliced, the splicing part of the straight pipe and the arc-shaped pipe can be uniformly welded, the arc-shaped pipe can be moved by driving the special-shaped plate to weld both ends of the arc-shaped pipe, and the symmetrical effect of the straight pipe welded on both sides of the arc-shaped pipe can be guaranteed.

[0019] 2. The marine U-shaped pipe welding auxiliary device, the second electric sliding blocks on both sides are driven to slide on the lower end of the second electric sliding rail respectively, the second electric sliding blocks drive the telescopic rods to approach the straight pipe on one side through the sixth rectangular strip, the telescopic rods drive the arc-shaped plates to approach the straight pipe on one side through the U-shaped block until the third rubber pad is tightly attached to both sides, the sixth rectangular strip continuously approaches the straight pipe on both sides, the telescopic rods are contracted and extrude the third spring, the third rectangular plate slides to the side close to the straight pipe, the third rectangular plate extrudes the fourth rectangular blocks on both sides to drive the fourth rectangular blocks to rotate on the outer side of the third cylindrical rod, the fourth rectangular blocks drive the arc-shaped plates to rotate, and the third rubber pad is wrapped outside the straight pipe, which can be used for clamping straight pipes with different diameters. BRIEF DESCRIPTION OF DRAWINGS

[0020] The application will be further described below with reference to the drawings.

[0021] Figure 1 is a perspective view of the embodiment one of the application;

[0022] Figure 2 is a schematic view of the special-shaped plate structure;

[0023] Figure 3 is a schematic view of the bevel block structure;

[0024] Figure 4 is a schematic view of the rectangular frame section;

[0025] Figure 5 is a schematic view of the welding head position;

[0026] Figure 6 is a schematic view of the circular plate position;

[0027] Figure 7This is a schematic diagram showing the position of the curved plate;

[0028] In the diagram: 1. Irregularly shaped plate; 11. First clamping block; 111. First cylindrical rod; 112. First rubber pad; 12. U-shaped frame; 121. First electric slider; 13. First rectangular slider; 131. First rectangular strip; 132. First gear; 133. Second gear; 134. Third gear; 135. Second rectangular strip; 136. First rectangular cylinder; 137. First motor; 14. Second clamping block; 141. Second rubber pad; 142. First rectangular plate; 1421. First spring; 1422. Inclined block; 143. Second cylindrical rod; 1431. Second spring; 144. First rectangular block; 145. Electric telescopic rod; 2. Second rectangular plate; 21. First electric slider 1. Rail; 22. Rectangular frame; 23. Second motor; 24. Second rectangular cylinder; 25. Third rectangular bar; 26. Second electric slide rail; 261. Second electric slider; 27. Ring; 28. Circular plate; 281. Rectangular hole; 282. Second rectangular slider; 283. Second rectangular block; 284. Lead screw; 29. ​​Fourth rectangular bar; 291. Fifth rectangular bar; 292. Third rectangular cylinder; 293. Third rectangular block; 3. Welding head; 31. Wire harness; 32. Welding machine; 4. U-shaped block; 41. Third cylindrical rod; 42. Fourth rectangular block; 43. Arc plate; 44. Third rubber pad; 45. Sixth rectangular bar; 451. Third rectangular plate; 46. Telescopic rod; 461. Third spring. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] Example 1: As Figures 1-7 As shown in the embodiment of the present invention, a welding auxiliary device for marine U-shaped pipes includes a shaped plate 1, the middle of which is V-shaped. First clamping blocks 11 are slidably arranged on both sides of the upper end of the shaped plate 1, with the two first clamping blocks 11 at a 45-degree angle. A second clamping block 14 is slidably arranged in the middle of the upper end of the shaped plate 1. A sliding assembly is provided at the lower end of the shaped plate 1. The sliding assembly includes a U-shaped frame 12 fixed to the lower end of the shaped plate 1. A second rectangular plate 2 is slidably arranged at the lower end of the U-shaped frame 12. A rectangular frame 22 is rotatably arranged at the lower end of the second rectangular plate 2. A clamping assembly is provided at the upper end of the second rectangular plate 2. The clamping assembly includes two U-shaped blocks 4 slidably arranged at the upper end of the second rectangular plate 2. Arc plates 43 are rotatably arranged at both ends of opposite sides of the U-shaped blocks 4. A welding head 3 is provided at the upper end of the clamping assembly.

[0031] Specifically, when welding the U-shaped pipe, two straight pipes need to be welded at both ends of the arc-shaped pipe. When welding thicker pipes, the inside of the pipe needs to be welded. When welding larger U-shaped pipes, manual splicing is often required, which cannot guarantee the splicing accuracy and the symmetry of the straight pipes welded on both sides of the arc-shaped pipe. When using the welding auxiliary device, the arc-shaped pipe is placed on the upper end of the two first clamping blocks 11, with the two ends to be welded upward. Then the second clamping block 14 is driven to slide downward and press on the upper end of the arc-shaped pipe to keep it fixed. Then the U-shaped block 4 is driven to move closer to each other to clamp the straight pipes on both sides of the arc-shaped plate 43. Then the U-shaped block 4 is driven to slide downward, and the welding head 3 is located at the middle of the straight pipe. Then the U-shaped block 4 is driven to move the straight pipe downward to splice it with the arc-shaped pipe on one side. Then the second rectangular plate 2 is driven to rotate, and the second rectangular plate 2 drives the special-shaped plate 1 to rotate through the U-shaped frame 12, and the special-shaped plate 1 drives the fixed arc-shaped pipe to rotate around the center point of the splicing on one side. At the same time, the second rectangular plate 2 drives the straight pipe clamped in the middle of the arc-shaped plate 43 to rotate around the center point of the splicing. The straight pipe and the arc-shaped pipe rotate synchronously, and the welding head 3 welds the inside splicing of the straight pipe and the arc-shaped pipe. After the straight pipe is welded on one side of the arc-shaped pipe, the arc-shaped pipe on the upper end of the special-shaped plate 1 is driven by the U-shaped frame 12 to move to one side on the upper end of the second rectangular plate 2, so that the end to be welded on the other side of the arc-shaped pipe is located at the lower end of the two arc-shaped plates 43. Then the above steps are repeated to weld the straight pipe on the other end of the arc-shaped pipe. The arc-shaped pipe is placed on the upper end of the first clamping block 11, and then the second clamping block 14 is driven to press and fix the arc-shaped pipe. Then the arc-shaped plate 43 is driven to clamp the straight pipe. Then the straight pipe is driven to move downward to splice it with the arc-shaped pipe on one side. Then the second rectangular plate 2 is driven to drive the arc-shaped pipe on the upper end of the special-shaped plate 1 and the straight pipe clamped in the middle of the arc-shaped plate 43 to rotate synchronously. The welding head 3 welds the inside splicing of the straight pipe and the arc-shaped pipe. Then the U-shaped frame 12 drives the arc-shaped pipe on the upper end of the special-shaped plate 1 to move to one side on the upper end of the second rectangular plate 2, so that the end to be welded on the other side of the arc-shaped pipe is located at the lower end of the two arc-shaped plates 43. Then the above steps are repeated to weld the straight pipe on the other end of the arc-shaped pipe. The straight pipe and the arc-shaped pipe can be clamped and spliced, the splicing of the straight pipe and the arc-shaped pipe can be evenly welded, the arc-shaped pipe can be moved by driving the special-shaped plate 1, the two ends of the arc-shaped pipe can be welded, and the symmetry of the straight pipe welded on both sides of the arc-shaped pipe can be guaranteed.

[0032] As Figure 2As shown, the first clamping block 11 is fixed on one side of the first cylindrical rod 111, the first cylindrical rod 111 is slidingly arranged in the middle of the special-shaped plate 1, the first cylindrical rod 111 is fixed on the end away from the first clamping block 11 The first rectangular slide block 13 is slidingly arranged on one side of the special-shaped plate 1, the U-shaped frame 12 is provided with a gear set in the middle of the upper end, the gear set includes two first rectangular strips 131, the first gear 132 is rotatably arranged between the two first rectangular strips 131, the first gear 132 is fixed on one side of the output end of the first motor 137 through the pin shaft, the first motor 137 is fixed on the U-shaped frame 12 through the motor seat, the first gear 132 is meshed with the second gear 133 on one side, the first gear 132 and the second gear 133 are respectively meshed with the third gear 134 on both sides, the third gear 134 is respectively fixed with the second rectangular strip 135, the first rectangular slide block 13 is rotatably arranged on one side of the first rectangular cylinder 136, and the second rectangular strip 135 is slidingly arranged in the first rectangular cylinder 136.

[0033] Specifically, by starting the first motor 137 to drive the first gear 132 to rotate, the first gear 132 drives the second gear 133 to rotate, the first gear 132 and the second gear 133 drive the third gear 134 on both sides to rotate, the third gear 134 drives the second rectangular strip 135 to rotate, and the second rectangular strip 135 drives the first rectangular slide block 13 to slide on one side of the special-shaped plate 1 through the first rectangular cylinder 136. The first rectangular slide block 13 drives the first clamping block 11 to slide through the first cylindrical rod 111, the distance between the two first clamping blocks 11 can be adjusted, and it can be used for fixing arc-shaped pipes of different sizes.

[0034] As shown in the figure, Figure 3 The second clamping block 14 is fixed on the upper end of the second cylindrical rod 143, the second clamping block 14 is provided with a first rectangular plate 142, the second cylindrical rod 143 is slidingly arranged in the middle of the first rectangular plate 142, the first rectangular plate 142 is fixed on both sides of the first rectangular block 144, the output end of the electric telescopic rod 145 is fixed on the lower end of the first rectangular block 144, and the electric telescopic rod 145 is fixed on the upper end of the special-shaped plate 1.

[0035] Specifically, by driving the electric telescopic rod 145 to retract, the electric telescopic rod 145 drives the first rectangular plate 142 to slide downward through the first rectangular block 144, the first rectangular plate 142 drives the second clamping block 14 to slide downward through the second cylindrical rod 143, and the arc-shaped pipe is fixed on the upper end of the arc-shaped pipe.

[0036] As shown in the figure, Figure 3 The second cylindrical rod 143 is sleeved with the second spring 1431 at the lower end, and the second clamping block 14 is fixed with the first rectangular plate 142 through the second spring 1431.

[0037] Specifically, when the first rectangular plate 142 is driven to move downward, the first rectangular plate 142 drives the second clamping block 14 to slide downward through the second cylindrical rod 143, and when the second clamping block 14 contacts the upper end of the arc-shaped pipe, the second clamping block 14 drives the second cylindrical rod 143 to slide upward in the middle of the first rectangular plate 142 and press the second spring 1431, so as to prevent excessive pressing of the arc-shaped pipe.

[0038] As shown in Figure 3 , the inner sides of the two sides of the first rectangular plate 142 are slidably provided with bevel blocks 1422, and the bevel blocks 1422 are fixedly connected to the inner sides of the first rectangular plate 142 through the first springs 1421.

[0039] Specifically, when the first rectangular plate 142 is driven to slide downward, the first rectangular plate 142 drives the bevel blocks 1422 to slide downward, so that the bevel blocks 1422 abut against the two sides of the upper end of the arc-shaped pipe, and the two sides of the upper end of the arc-shaped pipe are in a horizontal state. When the arc-shaped plate 43 drives the straight pipe to move downward and splice with the arc-shaped pipe, the straight pipe slides along one side of the bevel of the bevel block 1422, drives the bevel block 1422 to slide to the inside of the first rectangular plate 142 and press the first spring 1421, so that the straight pipe and the arc-shaped pipe are spliced together.

[0040] As shown in Figure 3 , one side of the second clamping block 14 is fixedly connected with a second rubber pad 141, and one side of the first clamping block 11 is fixedly connected with a first rubber pad 112.

[0041] Specifically, the side of the first clamping block 11 in contact with the arc-shaped pipe is provided with the first rubber pad 112, and the side of the second clamping block 14 in contact with the arc-shaped pipe is provided with the second rubber pad 141, so as to prevent scratches on the surface of the arc-shaped pipe when the arc-shaped pipe is fixed.

[0042] As shown in Figure 4 , the two sides of the U-shaped frame 12 are fixedly connected with first electric sliding blocks 121, and the upper ends of the second rectangular plate 2 are fixedly connected with first electric sliding rails 21 corresponding to the positions of the first electric sliding blocks 121, and the first electric sliding blocks 121 are slidably arranged on the upper ends of the first electric sliding rails 21.

[0043] Specifically, after the straight pipe is welded on one side of the arc-shaped pipe, the first electric sliding block 121 is then driven to slide on the upper end of the first electric sliding rail 21, and the first electric sliding block 121 drives the arc-shaped pipe fixed on the upper end of the special-shaped plate 1 to move through the U-shaped frame 12, so that the end to be welded on the other side of the arc-shaped pipe is located below the two arc-shaped plates 43, and then the other side is welded.

[0044] As shown in Figure 4 , a second motor 23 is fixedly connected inside a rectangular frame 22, and an output end of the second motor 23 penetrates through the upper end of the rectangular frame 22 and is fixedly connected with the second rectangular plate 2.

[0045] Specifically, by starting the second motor 23 to drive the second rectangular plate 2 to rotate, the second rectangular plate 2 drives the arc-shaped pipe fixed at the upper end of the special-shaped plate 1 to rotate through the U-shaped frame 12, and the second rectangular plate 2 drives the straight pipe clamped in the middle of the arc-shaped plate 43 to rotate, and the welding head 3 welds the inside joint of the pipe at the same time.

[0046] As shown in Figures 5-6 The second rectangular plate 2 is fixed at both sides of the upper end of the second rectangular cylinder 24, the second rectangular cylinder 24 is provided with a hydraulic cylinder inside, the third rectangular strip 25 is slidably arranged inside the second rectangular cylinder 24, the second electric sliding rail 26 is fixed at one side of the third rectangular strip 25, the circular ring 27 is fixed at one end of the second electric sliding rail 26, the circular plate 28 is rotatably arranged in the middle of the circular ring 27, the rectangular hole 281 is formed in the middle of the circular plate 28, the second rectangular sliding block 282 is slidably arranged inside the rectangular hole 281, the welding head 3 is arranged in the middle of the second rectangular sliding block 282, the fourth rectangular strip 29 is fixed at one side of the circular plate 28, the second rectangular block 283 is fixed at the upper end of the second rectangular sliding block 282, the third rectangular block 293 is fixed at the upper end of the fourth rectangular strip 29, the screw rod 284 is threadedly connected to the middle of the third rectangular block 293, the screw rod 284 is rotatably arranged at one side of the second rectangular block 283, the fifth rectangular strip 291 is fixed at one end of the fourth rectangular strip 29 away from the circular plate 28, the third rectangular cylinder 292 is fixed at the upper end of the rectangular frame 22 corresponding to the position of the fifth rectangular strip 291, the fifth rectangular strip 291 is slidably arranged in the third rectangular cylinder 292, the welding head 3 is fixed to the welding machine 32 through the wire harness 31, and the welding machine 32 is fixed to one side of the rectangular frame 22.

[0047] Specifically, when the arc-shaped plate 43 clamps the straight pipe, the welding head 3 is located in the middle of the straight pipe, then the third rectangular strip 25 is driven to slide into the second rectangular cylinder 24, the third rectangular strip 25 drives the circular ring 27 to slide downward through the second electric sliding rail 26, the circular ring 27 drives the fourth rectangular strip 29 to move downward through the circular plate 28, the fourth rectangular strip 29 drives the fifth rectangular strip 291 to slide into the third rectangular cylinder 292, the third rectangular strip 25 drives the straight pipe clamped at the lower end to move downward through the second electric sliding rail 26, when the second rectangular plate 2 drives the arc-shaped pipe to rotate, the second rectangular plate 2 drives the third rectangular strip 25 to rotate through the second rectangular cylinder 24, the third rectangular strip 25 drives the circular ring 27 to rotate outside the circular plate 28 through the second electric sliding rail 26, so that the welding head 3 remains stationary in the middle of the straight pipe, the second rectangular plate 2 drives the arc-shaped pipe and the straight pipe to rotate, the welding head 3 welds the joint of the straight pipe and the arc-shaped pipe, the screw rod 284 is driven to rotate in the middle of the third rectangular block 293, the screw rod 284 drives the second rectangular sliding block 282 to slide in the middle of the rectangular hole 281 through the second rectangular block 283, and the second rectangular sliding block 282 drives the welding head 3 to move, so that the position of the welding head 3 can be adjusted according to the different diameters of the pipes.

[0048] Example 2: Figure 7 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: a third cylindrical rod 41 is fixedly connected to one side of the U-shaped block 4, and a fourth rectangular block 42 is rotatably arranged on both sides of the third cylindrical rod 41. The fourth rectangular block 42 is rotatably arranged on one side of the arc plate 43. A third rubber pad 44 is fixedly connected to the side of the arc plate 43 away from the fourth rectangular block 42. A second electric slider 261 is slidably arranged at the lower end of the second electric slide rail 26. A sixth rectangular strip 45 is fixedly connected to the lower end of the second electric slider 261. The sixth rectangular strip 45 is fixedly connected to the U-shaped block 4 through a telescopic rod 46. A third spring 461 is sleeved on the outside of the telescopic rod 46. A third rectangular plate 451 is fixedly connected to both sides of the sixth rectangular strip 45. The third rectangular plate 451 is located on one side of the fourth rectangular block 42.

[0049] Specifically, a straight tube is placed between two third rubber pads 44. The second electric sliders 261 on both sides slide at the lower end of the second electric slide rail 26. The second electric sliders 261 drive the telescopic rod 46 to move closer to one side of the straight tube via the sixth rectangular bar 45. The telescopic rod 46 drives the arc plate 43 to move closer to one side of the straight tube via the U-shaped block 4 until the third rubber pads 44 are tightly attached to both sides. The sixth rectangular bar 45 continues to move closer to both sides of the straight tube, causing the telescopic rod 46 to contract and squeeze the third spring 461, causing the third rectangular plate 451 to slide closer to the straight tube. The third rectangular plate 451 squeezes the fourth rectangular blocks 42 on both sides, causing the fourth rectangular blocks 42 to rotate outside the third cylindrical rod 41. The fourth rectangular blocks 42 drive the arc plate 43 to rotate, so that the third rubber pads 44 wrap around the outside of the straight tube. This method can be used to clamp straight tubes of different diameters.

[0050] Working principle: When welding U-shaped pipes, the arc-shaped pipe is placed on the upper end of two first clamping blocks 11, with the two ends of the arc-shaped pipe to be welded facing upwards. The electric telescopic rod 145 is driven to retract, and the electric telescopic rod 145 drives the first rectangular plate 142 to slide downwards through the first rectangular block 144. When the first rectangular plate 142 is driven to move downwards, the first rectangular plate 142 drives the second clamping block 14 to slide downwards through the second cylindrical rod 143. When the second clamping block 14 contacts the upper end of the arc-shaped pipe, the second clamping block 14 drives the second cylindrical rod 143 to slide upwards in the middle of the first rectangular plate 142 and squeeze the second spring 1431 to prevent excessive compression of the arc-shaped pipe. The first rectangular plate 142 drives the inclined block 1422 to slide downwards, so that the inclined block 1422 abuts against both sides of the upper end of the arc-shaped pipe, so that both sides of the upper end of the arc-shaped pipe are in a horizontal state.

[0051] The straight pipe is placed between the two third rubber pads 44, the second electric sliding blocks 261 on both sides are driven to slide under the second electric sliding rails 26, the second electric sliding blocks 261 drive the telescopic rods 46 to move close to one side of the straight pipe through the sixth rectangular strips 45, the telescopic rods 46 drive the arc-shaped plates 43 to move close to one side of the straight pipe through the U-shaped blocks 4, until the third rubber pads 44 are tightly attached to both sides, the sixth rectangular strips 45 continuously move close to both sides of the straight pipe, the telescopic rods 46 are retracted and press the third springs 461, the third rectangular plates 451 slide to one side of the straight pipe, the third rectangular plates 451 press the fourth rectangular blocks 42 on both sides to rotate outside the third cylindrical rods 41, the fourth rectangular blocks 42 drive the arc-shaped plates 43 to rotate, the third rubber pads 44 are wrapped outside the straight pipe, and the straight pipe is clamped, at this time, the welding head 3 is located at the middle of the straight pipe, then the third rectangular strips 25 are driven to slide into the second rectangular cylinders 24, the third rectangular strips 25 drive the circular rings 27 to slide downward through the second electric sliding rails 26, the circular rings 27 drive the fourth rectangular strips 29 to move downward through the circular plates 28, the fourth rectangular strips 29 drive the fifth rectangular strips 291 to slide into the third rectangular cylinders 292, the third rectangular strips 25 drive the straight pipe clamped at the lower end to move downward through the second electric sliding rails 26, when the arc-shaped pipe is spliced with the straight pipe, the straight pipe slides along the inclined edge of the inclined edge blocks 1422, drives the inclined edge blocks 1422 to slide into the first rectangular plates 142 and press the first springs 1421, and the straight pipe is spliced with the arc-shaped pipe;

[0052] The second electric motor 23 is started to drive the second rectangular plates 2 to rotate, the second rectangular plates 2 drive the arc-shaped pipes fixed at the upper end of the special-shaped plate 1 to rotate through the U-shaped frames 12, the second rectangular plates 2 drive the straight pipes clamped at the middle of the arc-shaped plates 43 to rotate, the straight pipes are welded inside the spliced part by the welding head 3 at the same time, after the straight pipe is welded on one side of the arc-shaped pipe, the first electric sliding blocks 121 are driven to slide on the upper end of the first electric sliding rails 21, the first electric sliding blocks 121 drive the arc-shaped pipes fixed at the upper end of the special-shaped plate 1 to move through the U-shaped frames 12, so that the end to be welded on the other side of the arc-shaped pipe is located below the two arc-shaped plates 43, then the other side is welded.

[0053] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above examples, the above examples and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A welding auxiliary device for marine U-shaped pipes, comprising a shaped plate (1), the shaped plate (1) being V-shaped in the middle, first clamping blocks (11) being slidably disposed on both sides of the upper end of the shaped plate (1), the two first clamping blocks (11) being at a 45-degree angle, a second clamping block (14) being slidably disposed in the middle of the upper end of the shaped plate (1), and a sliding assembly being disposed at the lower end of the shaped plate (1), characterized in that: The sliding assembly includes a U-shaped frame (12) fixed to the lower end of the irregular plate (1). A second rectangular plate (2) is slidably disposed at the lower end of the U-shaped frame (12). A rectangular frame (22) is rotatably disposed at the lower end of the second rectangular plate (2). A clamping assembly is disposed at the upper end of the second rectangular plate (2). The clamping assembly includes two U-shaped blocks (4) slidably disposed at the upper end of the second rectangular plate (2). Arc plates (43) are rotatably disposed at both ends of opposite sides of the U-shaped blocks (4). A welding head (3) is disposed at the upper end of the clamping assembly. The welding head (3) is used to weld the internal connection between the straight pipe and the arc pipe. The upper ends of the second rectangular plate (2) are fixedly connected to the two sides of the second rectangular tube (24). The second rectangular tube (24) is equipped with a hydraulic cylinder. The second rectangular tube (24) is slidably arranged with a third rectangular strip (25) inside the second rectangular tube (24). The third rectangular strip (25) is fixedly connected to the opposite side of the third rectangular strip (25) with a second electric slide rail (26). The second electric slide rail (26) is fixedly connected to the opposite end of a ring (27). The ring (27) is rotatably arranged with a circular plate (28) in the middle. The circular plate (28) has a rectangular hole (281) in the middle. The second rectangular slider (282) is slidably arranged inside the rectangular hole (281). The welding head (3) is arranged in the middle of the second rectangular slider (282). The circular plate (28) is fixedly connected to one side with a fourth rectangular strip (29). The second rectangular tube (24) is fixedly connected to the second rectangular tube (24) with a hydraulic cylinder inside the second rectangular tube (24). The third rectangular strip (25) is slidably arranged with a hydraulic cylinder inside the second rectangular tube (24) ... The upper end of the slider (282) is fixed with a second rectangular block (283), the upper end of the fourth rectangular strip (29) is fixed with a third rectangular block (293), the middle part of the third rectangular block (293) is threaded with a lead screw (284), the lead screw (284) is rotatably set on one side of the second rectangular block (283), the end of the fourth rectangular strip (29) away from the circular plate (28) is fixed with a fifth rectangular strip (291), the upper end of the rectangular frame (22) is fixed with a third rectangular tube (292) corresponding to the position of the fifth rectangular strip (291), the fifth rectangular strip (291) is slidably set in the third rectangular tube (292), the welding head (3) is fixed to the welding machine (32) through the wire harness (31), and the welding machine (32) is fixed to one side of the rectangular frame (22).

2. The auxiliary device for welding marine U-shaped pipes according to claim 1, characterized in that: A first cylindrical rod (111) is fixedly connected to one side of the first clamping block (11). The first cylindrical rod (111) is slidably disposed in the middle of the irregular plate (1). A first rectangular slider (13) is fixedly connected to the end of the first cylindrical rod (111) away from the first clamping block (11). The first rectangular slider (13) is slidably disposed on one side of the irregular plate (1). A gear set is provided in the middle of the upper end of the U-shaped frame (12). The gear set includes two first rectangular bars (131). A first gear (132) is rotatably disposed between the two first rectangular bars (131). The output end of the first motor (137) is fixed to one side by a pin. The first motor (137) is fixed to the U-shaped frame (12) through a motor seat. The first gear (132) is meshed with the second gear (133) on one side. The first gear (132) and the second gear (133) are respectively meshed with the third gear (134) on both sides. The third gear (134) is respectively fixed with the second rectangular bar (135). The first rectangular slider (13) is rotatably provided with the first rectangular tube (136) on one side. The second rectangular bar (135) is slidably provided in the first rectangular tube (136).

3. The auxiliary device for welding marine U-shaped pipes according to claim 2, characterized in that: The second clamping block (14) is fixedly connected to the upper end of the second cylindrical rod (143), and the second clamping block (14) is provided with a first rectangular plate (142) at the upper end. The second cylindrical rod (143) slides through the middle of the first rectangular plate (142). The first rectangular plate (142) is fixedly connected to both sides of the first rectangular block (144), and the lower end of the first rectangular block (144) is fixedly connected to the output end of the electric telescopic rod (145). The electric telescopic rod (145) is fixedly connected to the upper end of the irregular plate (1).

4. The auxiliary device for welding marine U-shaped pipes according to claim 3, characterized in that: The second cylindrical rod (143) is fitted with a second spring (1431) at its lower end, and the second clamping block (14) is fixed to the first rectangular plate (142) through the second spring (1431).

5. The auxiliary device for welding marine U-shaped pipes according to claim 4, characterized in that: The first rectangular plate (142) has inclined blocks (1422) slidably disposed on both sides inside, and the inclined blocks (1422) are fixed inside the first rectangular plate (142) by a first spring (1421).

6. The auxiliary device for welding marine U-shaped pipes according to claim 5, characterized in that: A second rubber pad (141) is fixedly connected to one side of the second clamping block (14), and a first rubber pad (112) is fixedly connected to one side of the first clamping block (11).

7. The auxiliary device for welding marine U-shaped pipes according to claim 1, characterized in that: The U-shaped frame (12) is fixedly connected to the two sides of the first electric slider (121), and the upper end of the second rectangular plate (2) is fixedly connected to the first electric slide rail (21) at the position corresponding to the first electric slider (121). The first electric slider (121) is slidably disposed on the upper end of the first electric slide rail (21).

8. The auxiliary device for welding marine U-shaped pipes according to claim 1, characterized in that: The second motor (23) is fixedly connected inside the rectangular frame (22), and the output end of the second motor (23) passes through the upper end of the rectangular frame (22) and is fixedly connected to the second rectangular plate (2).

9. The auxiliary device for welding marine U-shaped pipes according to claim 1, characterized in that: A third cylindrical rod (41) is fixedly connected to one side of the U-shaped block (4). A fourth rectangular block (42) is rotatably arranged on both sides of the third cylindrical rod (41). The fourth rectangular block (42) is rotatably arranged on one side of the arc plate (43). A third rubber pad (44) is fixedly connected to the side of the arc plate (43) away from the fourth rectangular block (42). A second electric slider (261) is slidably arranged at the lower end of the second electric slide rail (26). A sixth rectangular strip (45) is fixedly connected to the lower end of the second electric slider (261). The sixth rectangular strip (45) is fixedly connected to the U-shaped block (4) through a telescopic rod (46). A third spring (461) is sleeved on the outside of the telescopic rod (46). A third rectangular plate (451) is fixedly connected to both sides of the sixth rectangular strip (45). The third rectangular plate (451) is located on one side of the fourth rectangular block (42).

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