Auxiliary welding device for marine U-shaped pipe

Abstract

The invention belongs to the technical field of pipe machining, and particularly relates to a marine U-shaped pipe welding auxiliary device which comprises a special-shaped plate, first clamping blocks are arranged on the two sides of the upper end of the special-shaped plate in a sliding mode, a second clamping block is arranged in the middle of the upper end of the special-shaped plate in a sliding mode, and a sliding assembly is arranged at the lower end of the special-shaped plate. The sliding assembly comprises a U-shaped frame fixedly connected with 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, and the clamping assembly comprises two U-shaped blocks slidably arranged at the upper end of the second rectangular plate; arc-shaped plates are rotationally arranged at the two ends of the opposite sides of the U-shaped blocks correspondingly, welding heads are arranged at the upper ends of the clamping assemblies, the arc-shaped pipes are driven to move by driving the special-shaped plates 1, the two ends of the arc-shaped pipes can be welded, and the symmetrical effect that straight pipes are welded to the two sides of the arc-shaped pipes can be guaranteed.

Description

Technical Field

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

[0002] Various pipelines on ships, such as seawater pipelines, fresh water pipelines, fuel pipelines, etc., need to be firmly installed through U-shaped pipe clamps. The welding principle is mainly to heat and melt the solid solder wire with a heated soldering iron, and with the help of the main function of the flux, ensure that the melted solder wire can smoothly flow into the middle of the metal to be welded. After it is completely cooled, a relatively reliable and firm welding point can be formed.

[0003] A patent application with publication number CN109967956B discloses a U-shaped tube welding auxiliary device and a welding auxiliary method. The rotation force of the regulating gear is limited by the tooth groove of the top piece gear to avoid the uncontrollable force applied to the regulating gear by people or equipment, which causes the rotation speed of the regulating gear to be unstable. Secondly, the top piece will engage the tooth groove each time the regulating gear rotates, so that the distance of each rotation of the regulating gear is controlled, and controllable equidistant rotation is achieved while eliminating uncontrollable force, thereby avoiding the U-shaped tube rotating too fast or too slow during welding, affecting product quality and production efficiency.

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

[0005] To this end, the present invention provides a marine U-shaped pipe welding auxiliary device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a marine U-shaped pipe welding auxiliary device described in the present invention includes a special-shaped plate, the middle part of the special-shaped plate is V-shaped, and a first clamping block is slidingly provided on both sides of the upper end of the special-shaped plate, and the two first clamping blocks are 45 degrees, and a second clamping block is slidingly provided in the middle of the upper end of the special-shaped plate, and a sliding assembly is provided at the lower end of the special-shaped plate, and the sliding assembly includes a U-shaped frame fixed to the lower end of the special-shaped plate, a second rectangular plate is slidingly provided at the lower end of the U-shaped frame, a rectangular frame is rotatably provided at the lower end of the second rectangular plate, and a clamping assembly is provided at the upper end of the second rectangular plate, and the clamping assembly includes two U-shaped blocks slidingly provided at the upper end of the second rectangular plate, and arc plates are rotatably provided at both ends of the opposite side of the U-shaped block, and a welding head is provided at the upper end of the clamping assembly.

[0008] Preferably, a first cylindrical rod is fixedly connected to one side of the first clamping block, and the first cylindrical rod is slidably arranged in the middle of the special-shaped plate. A first rectangular slider is fixedly connected to the end of the first cylindrical rod away from the first clamping block, and the first rectangular slider is slidably arranged on one side of the special-shaped plate. A gear set is provided in the middle of the upper end of the U-shaped frame, and the gear set includes two first rectangular bars, and a first gear is rotatably arranged between the two first rectangular bars. One side of the first gear is fixedly connected to the output end of the first motor through a pin shaft, and the first motor is fixed to the U-shaped frame through a motor seat. A second gear is meshed with one side of the first gear, and third gears are respectively meshed on both sides of the first gear and the second gear. The third gears are respectively fixed to the second rectangular bar, and a first rectangular cylinder is rotatably provided on one side of the first rectangular slider, and the second rectangular bar is slidably arranged in the first rectangular cylinder.

[0009] Preferably, a second cylindrical rod is fixedly connected to the upper end of the second clamping block, a first rectangular plate is provided at the upper end of the second clamping block, the second cylindrical rod slides through the middle of the first rectangular plate, first rectangular blocks are fixedly connected to both sides of the first rectangular plate, the lower end of the first rectangular block is fixedly connected to the output end of the electric telescopic rod, and the electric telescopic rod is fixed to the upper end of the special-shaped plate.

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

[0011] Preferably, bevel blocks are slidably provided inside both sides of the first rectangular plate, and the bevel blocks are fixed inside the first rectangular plate via a first spring.

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

[0013] Preferably, first electric sliders are fixedly connected to both sides of the U-shaped frame, first electric slide rails are fixedly connected to the upper ends of the second rectangular plates corresponding to the positions of the first electric sliders, and the first electric sliders are slidably arranged on the upper ends of the first electric slide rails.

[0014] Preferably, a second motor is fixedly connected inside the rectangular frame, and an output end of the second motor passes through the upper end of the rectangular frame and is fixedly connected to the second rectangular plate.

[0015] The cam is fixedly provided with a third rectangular bar on both sides of the upper end of the second rectangular plate, and a hydraulic cylinder is arranged inside the second rectangular bar, and a third rectangular bar is slidably arranged inside the second rectangular bar, and the opposite side of the third rectangular bar is fixedly connected to a second electric slide rail, and the opposite end of the second electric slide rail is jointly fixed with a circular ring, and a circular plate is rotatably arranged in the middle of the circular ring, and a rectangular hole is opened in the middle of the circular plate, and a second rectangular slider is slidably arranged inside the rectangular hole, and the welding head is arranged in the middle of the second rectangular slider on one side of the circular plate, and the upper end of the second rectangular slider is fixedly connected to the second rectangular block, and the upper end of the fourth rectangular bar is fixedly fixed to the third rectangular block, and the middle of the third rectangular block is threadedly connected to a screw rod, and the screw rod is rotatably arranged on one side of the second rectangular block, and the fourth rectangular bar is fixedly connected to the fifth rectangular bar at one end away from the circular plate, and the third rectangular bar is fixedly connected to the position of the fifth rectangular bar at the upper end 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 provided on both sides of the third cylindrical rod, the fourth rectangular block is rotatably provided on one side of the arc plate, a third rubber pad is fixed to the side of the arc plate away from the fourth rectangular block, a second electric slider is slidingly provided at the lower end of the second electric slide rail, a sixth rectangular bar is fixed to the lower end of the second electric slider, the sixth rectangular bar is fixed to the U-shaped block through a telescopic rod, a third spring is sleeved on the outside of the telescopic rod, third rectangular plates are fixed to both sides of the sixth rectangular bar, and the third rectangular plates are respectively located on one side of the fourth rectangular block.

[0017] The beneficial effects of the present invention are as follows: 1. The U-shaped pipe welding auxiliary device for ships of the present invention is characterized by placing the curved pipe on the upper end of the first clamping block, then driving the second clamping block to squeeze and fix the curved pipe, then driving the curved plate to fix the straight pipe, then driving the straight pipe downward until it is spliced ​​with one side of the curved pipe, then driving the second rectangular plate to drive the curved pipe on the upper end of the special-shaped plate and the straight pipe clamped in the middle of the curved plate to rotate synchronously, the welding head welds the internal splicing of the straight pipe and the curved pipe, then driving the U-shaped plate. The frame drives the arc-shaped pipe on the upper end of the special-shaped plate to move to one side at the upper end of the second rectangular plate, so that the end of the other side of the arc-shaped pipe that needs to be welded is located at the lower ends of the two arc-shaped plates, and then repeats the above steps to weld the straight pipe to the other end of the arc-shaped pipe. The straight pipe and the arc-shaped pipe can be clamped and spliced, and the splicing of the straight pipe and the arc-shaped pipe can be uniformly welded. By driving the special-shaped plate to drive the arc-shaped pipe to move, the two ends of the arc-shaped pipe can be welded, which can ensure the symmetrical effect of the straight pipe welding on both sides of the arc-shaped pipe.

[0018] 2. The U-shaped pipe welding auxiliary device for ships described in the present invention drives the second electric sliders on both sides to slide respectively at the lower end of the second electric slide rail, and the second electric slider drives the telescopic rod to approach the side of the straight pipe through the sixth rectangular bar, and the telescopic rod drives the arc plate to approach the side of the straight pipe through the U-shaped block until the third rubber pads are tightly attached to both sides, and the sixth rectangular bar continues to approach the sides of the straight pipe, so that the telescopic rod contracts and squeezes the third spring, so that the third rectangular plate slides toward the side of the straight pipe, and the third rectangular plate squeezes the fourth rectangular blocks on both sides, driving the fourth rectangular block to rotate outside the third cylindrical rod, and the fourth rectangular block drives the arc plate to rotate, so that the third rubber pad is wrapped around the outside of the straight pipe, which can be used to clamp straight pipes of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a perspective view of embodiment 1 of the present invention; Figure 2 It is a schematic diagram of the special-shaped plate structure; Figure 3 It is a schematic diagram of the bevel block structure; Figure 4 It is a schematic diagram of a rectangular frame cross section; Figure 5 It is a schematic diagram of the welding head position; Figure 6 is a schematic diagram of the circular plate position; Figure 7 is a schematic diagram of the position of the curved plate; In the figure: 1. Special-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 bar; 132. First gear; 133. Second gear; 134. Third gear; 135. Second rectangular bar; 136. First rectangular tube; 137. First motor; 14. Second clamping block; 141. Second rubber pad; 142. First rectangular plate; 1421. First spring; 1422. Bevel block; 143. Second cylindrical rod; 1431. Second spring; 144. First rectangular block; 145. Electric telescopic rod; 2. Second rectangular plate; 21. First electric slider Rail; 22. Rectangular frame; 23. Second motor; 24. Second rectangular tube; 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. Screw rod; 29. ​​Fourth rectangular bar; 291. Fifth rectangular bar; 292. Third rectangular tube; 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 DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] Example 1: Figure 1-Figure 7 As shown, a marine U-shaped pipe welding auxiliary device described in an embodiment of the present invention includes a special-shaped plate 1, the middle part of the special-shaped plate 1 is V-shaped, and a first clamping block 11 is slidingly provided on both sides of the upper end of the special-shaped plate 1, and the two first clamping blocks 11 are 45 degrees. A second clamping block 14 is slidingly provided in the middle of the upper end of the special-shaped plate 1, and a sliding assembly is provided at the lower end of the special-shaped plate 1. The sliding assembly includes a U-shaped frame 12 fixed to the lower end of the special-shaped plate 1, and a second rectangular plate 2 is slidingly provided at the lower end of the U-shaped frame 12. A rectangular frame 22 is rotatably provided at the lower end of the second rectangular plate 2, and a clamping assembly is provided at the upper end of the second rectangular plate 2. The clamping assembly includes two U-shaped blocks 4 slidingly provided at the upper end of the second rectangular plate 2, and arc plates 43 are rotatably provided at both ends of the opposite side of the U-shaped block 4. A welding head 3 is provided at the upper end of the clamping assembly.

[0023] Specifically, when welding U-shaped pipes, it is necessary to weld two straight pipes to the two ends of the arc-shaped pipe. When welding thicker pipes, it is necessary to weld the inside of the pipe. When welding, the arc-shaped pipe and the straight pipe need to be spliced. 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 present welding auxiliary device, the arc-shaped pipe is placed on the upper ends of the two first clamping blocks 11, so that the two ends of the arc-shaped pipe to be welded are placed upward, and then the second clamping block 14 is driven to slide downward so that the second clamping block 14 is pressed on the upper end of the arc-shaped pipe to keep the arc-shaped pipe fixed. Drive the U-shaped blocks 4 to approach each other and drive the curved plates 43 on both sides to clamp the straight pipe, then drive the U-shaped block 4 to slide downward, and at the same time, make the welding head 3 located in the middle of the straight pipe, then drive the U-shaped block 4 to move the straight pipe downward, so that the straight pipe is spliced ​​with one side of the curved pipe, then drive the second rectangular plate 2 to rotate, the second rectangular plate 2 drives the special-shaped plate 1 to rotate through the U-shaped frame 12, the special-shaped plate 1 drives the fixed curved pipe to rotate about the center point of the splicing on one side, and at the same time, the second rectangular plate 2 drives the straight pipe clamped in the middle of the curved plate 43 to rotate about the center point of the splicing, so that the straight pipe and the curved pipe rotate synchronously, at this time the welding head 3 is located in the middle of the pipe, and the straight pipe and the curved pipe rotate synchronously while the welding head 3. Weld the internal joints of the straight pipe and the curved pipe. After welding the straight pipe to one side of the curved pipe, drive the U-shaped frame 12 to drive the curved pipe at the upper end of the special-shaped plate 1 to move to one side at the upper end of the second rectangular plate 2, so that the end of the other side of the curved pipe to be welded is located at the lower end of the two curved plates 43. Repeat the above steps to weld the straight pipe to the other end of the curved pipe. Place the curved pipe on the upper end of the first clamping block 11, then drive the second clamping block 14 to squeeze and fix the curved pipe, then drive the curved plate 43 to fix the straight pipe, then drive the straight pipe to move downward to splice the straight pipe with one side of the curved pipe, and then drive the second rectangular plate 2 to drive the special-shaped plate 1 to move upward. The curved tube at the end rotates synchronously with the straight tube clamped in the middle of the curved plate 43, and the welding head 3 welds the internal joints of the straight tube and the curved tube, and then drives the U-shaped frame 12 to drive the curved tube at the upper end of the special-shaped plate 1 to move to one side at the upper end of the second rectangular plate 2, so that the end of the other side of the curved tube to be welded is located at the lower ends of the two curved plates 43, and then repeats the above steps to weld the straight tube to the other end of the curved tube. The straight tube and the curved tube can be clamped and spliced, and the splicing of the straight tube and the curved tube can be uniformly welded. By driving the special-shaped plate 1 to drive the curved tube to move, the two ends of the curved tube can be welded, which can ensure the symmetrical effect of the straight tube welding on both sides of the curved tube.

[0024] like Figure 2As shown, a first cylindrical rod 111 is fixedly connected to one side of the first clamping block 11, and the first cylindrical rod 111 is slidably arranged in the middle of the special-shaped plate 1. The first cylindrical rod 111 is fixedly connected to a first rectangular slider 13 at one end away from the first clamping block 11. The first rectangular slider 13 is slidably arranged on one side of the special-shaped plate 1. A gear set is provided at the middle of the upper end of the U-shaped frame 12. The gear set includes two first rectangular bars 131, and a first gear 132 is rotatably arranged between the two first rectangular bars 131. One side of the first gear 132 is fixedly connected to the output end of the first motor 137 through a pin shaft. The first motor 137 is fixed to the U-shaped frame 12 through a motor seat. A second gear 133 is meshed with one side of the first gear 132, and a third gear 134 is respectively meshed on both sides of the first gear 132 and the second gear 133. The third gear 134 is respectively fixedly connected to the second rectangular bar 135. A first rectangular tube 136 is rotatably provided on one side of the first rectangular slider 13, and the second rectangular bar 135 is slidably arranged on the first rectangular tube 136.

[0025] 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 gears 134 on both sides to rotate, the third gear 134 drives the second rectangular bar 135 to rotate, the second rectangular bar 135 drives the first rectangular slider 13 to slide on one side of the special-shaped plate 1 through the first rectangular tube 136, the first rectangular slider 13 drives the first clamping block 11 to slide through the first cylindrical rod 111, and the distance between the two first clamping blocks 11 can be adjusted, which can be used to fix arc-shaped pipes of different sizes.

[0026] like Figure 3 As shown, the upper end of the second clamping block 14 is fixedly connected to a second cylindrical rod 143, and the upper end of the second clamping block 14 is provided with a first rectangular plate 142. The second cylindrical rod 143 slides through the middle of the first rectangular plate 142. First rectangular blocks 144 are fixedly connected to both sides of the first rectangular plate 142. The lower end of the first rectangular block 144 is fixedly connected to the output end of the electric telescopic rod 145, and the electric telescopic rod 145 is fixedly connected to the upper end of the special-shaped plate 1.

[0027] 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, and the first rectangular plate 142 drives the second clamping block 14 to slide downward through the second cylindrical rod 143 until it rests on the upper end of the arc-shaped pipe to fix the arc-shaped pipe.

[0028] like Figure 3 As shown, a second spring 1431 is sleeved on the lower end of the second cylindrical rod 143 , and the second clamping block 14 is fixedly connected to the first rectangular plate 142 via the second spring 1431 .

[0029] 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. When the second clamping block 14 contacts the upper end of the arc-shaped tube, the second clamping block 14 drives the second cylindrical rod 143 to slide upward in the middle of the first rectangular plate 142 and squeeze the second spring 1431 to prevent excessive squeezing of the arc-shaped tube.

[0030] like Figure 3 As shown, bevel blocks 1422 are slidably provided inside both sides of the first rectangular plate 142 , and the bevel blocks 1422 are fixed inside the first rectangular plate 142 via first springs 1421 .

[0031] Specifically, when the first rectangular plate 142 is driven to slide downward, the first rectangular plate 142 drives the bevel block 1422 to slide downward, so that the bevel block 1422 is against the two sides of the upper end of the arc-shaped tube, so that the two sides of the upper end of the arc-shaped tube are in a horizontal state. When the arc plate 43 is driven to drive the straight tube to move downward and splice with the arc-shaped tube, the straight tube slides along the bevel side of the bevel block 1422, driving the bevel block 1422 to slide into the inside of the first rectangular plate 142 and squeeze the first spring 1421, so that the straight tube and the arc-shaped tube are spliced ​​together.

[0032] like Figure 3 As shown, 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 .

[0033] Specifically, a first rubber pad 112 is provided on the side of the first clamping block 11 that contacts the arc tube, and a second rubber pad 141 is provided on the side of the second clamping block 14 that contacts the arc tube to prevent scratches on the surface of the arc tube when fixing the arc tube.

[0034] like Figure 4 As shown, first electric sliders 121 are fixedly connected to both sides of the U-shaped frame 12 , and first electric slide rails 21 are fixedly connected to the upper ends of the second rectangular plate 2 corresponding to the positions of the first electric sliders 121 . The first electric sliders 121 are slidably arranged on the upper ends of the first electric slide rails 21 .

[0035] Specifically, after the straight pipe is welded to one side of the arc-shaped pipe, the first electric slider 121 is then driven to slide on the upper end of the first electric slide rail 21. The first electric slider 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 of the other side of the arc-shaped pipe that needs to be welded is located at the lower end of the two arc plates 43, and then the other side is welded.

[0036] like Figure 4 As shown, a second motor 23 is fixedly connected to the interior of the rectangular frame 22 , and an 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 .

[0037] 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 simultaneously drives the straight pipe clamped in the middle of the arc plate 43 to rotate, and while rotating, the welding head 3 welds the internal joints of the pipe.

[0038] like Figure 5-Figure 6 As shown, the second rectangular plate 2 is fixedly connected to the second rectangular tube 24 on both sides of the upper end, a hydraulic cylinder is provided inside the second rectangular tube 24, a third rectangular bar 25 is slidably provided inside the second rectangular tube 24, a second electric slide 26 is fixedly connected to the opposite side of the third rectangular bar 25, and a circular ring 27 is fixedly connected to the opposite end of the second electric slide 26. A circular plate 28 is rotatably provided in the middle of the circular ring 27, a rectangular hole 281 is opened in the middle of the circular plate 28, and a second rectangular slider 282 is slidably provided inside the rectangular hole 281. The welding head 3 is provided in the middle of the second rectangular slider 282, and a fourth rectangular bar 29 is fixedly connected to one side of the circular plate 28. The second The upper end of the rectangular slider 282 is fixedly connected to the second rectangular block 283, the upper end of the fourth rectangular bar 29 is fixedly connected to the third rectangular block 293, the middle part of the third rectangular block 293 is threadedly connected to the screw rod 284, the screw rod 284 is rotatably set on one side of the second rectangular block 283, the end of the fourth rectangular bar 29 away from the circular plate 28 is fixedly connected to the fifth rectangular bar 291, the upper end of the rectangular frame 22 is fixedly connected to the position corresponding to the fifth rectangular bar 291, the fifth rectangular bar 291 is slidably set in the third rectangular tube 292, the welding head 3 is fixedly connected to the welding machine 32 through the wiring harness 31, and the welding machine 32 is fixedly connected to one side of the rectangular frame 22.

[0039] Specifically, after the curved plate 43 clamps the straight pipe, the welding head 3 is located in the middle of the straight pipe, and then the third rectangular bar 25 is driven to slide into the inside of the second rectangular tube 24. The third rectangular bar 25 drives the ring 27 to slide downward through the second electric slide 26. The ring 27 drives the fourth rectangular bar 29 to move downward through the circular plate 28. The fourth rectangular bar 29 drives the fifth rectangular bar 291 to slide into the inside of the third rectangular tube 292. The third rectangular bar 25 drives the straight pipe clamped at the lower end to move downward through the second electric slide 26. When the second rectangular plate 2 is driven to drive the curved pipe to rotate, the second rectangular plate 2 is driven by the second rectangular plate 2. The cylinder 24 drives the third rectangular bar 25 to rotate, and the third rectangular bar 25 drives the ring 27 to rotate outside the circular plate 28 through the second electric slide rail 26, so that the welding head 3 remains stationary in the middle of the straight pipe. The second rectangular plate 2 drives the curved pipe and the straight pipe to rotate, and the welding head 3 welds the joints of the straight pipe and the curved pipe. By driving the screw rod 284 to rotate in the middle of the third rectangular block 293, the screw rod 284 drives the second rectangular slider 282 to slide in the middle of the rectangular hole 281 through the second rectangular block 283, and the second rectangular slider 282 drives the welding head 3 to move. The position of the welding head 3 can be adjusted according to the different diameters of the pipe.

[0040] Example 2: Figure 7 As shown, compared with Example 1, another embodiment of the present invention is: a third cylindrical rod 41 is fixedly connected to one side of the U-shaped block 4, and fourth rectangular blocks 42 are rotatably provided on both sides of the third cylindrical rod 41. The fourth rectangular block 42 is rotatably provided on one side of the arc plate 43, and the arc plate 43 is fixedly connected to the side away from the fourth rectangular block 42 with a third rubber pad 44. A second electric slider 261 is slidingly provided at the lower end of the second electric slide rail 26, and a sixth rectangular bar 45 is fixedly connected to the lower end of the second electric slider 261. The sixth rectangular bar 45 is fixed to the U-shaped block 4 through a telescopic rod 46, and a third spring 461 is sleeved on the outer side of the telescopic rod 46. Third rectangular plates 451 are fixedly connected to both sides of the sixth rectangular bar 45, and the third rectangular plates 451 are respectively located on one side of the fourth rectangular block 42.

[0041] Specifically, the straight pipe is placed between the two third rubber pads 44, and the second electric sliders 261 on both sides are driven to slide on the lower end of the second electric slide rail 26 respectively. The second electric slider 261 drives the telescopic rod 46 to approach one side of the straight pipe through the sixth rectangular bar 45, and the telescopic rod 46 drives the arc plate 43 to approach one side of the straight pipe through the U-shaped block 4 until the third rubber pads 44 are tightly attached to both sides. The sixth rectangular bar 45 continues to approach both sides of the straight pipe, causing the telescopic rod 46 to contract and squeeze the third spring 461, causing the third rectangular plate 451 to slide toward the side of the straight pipe. The third rectangular plate 451 squeezes the fourth rectangular blocks 42 on both sides, driving the fourth rectangular block 42 to rotate outside the third cylindrical rod 41. The fourth rectangular block 42 drives the arc plate 43 to rotate, so that the third rubber pad 44 is wrapped around the outside of the straight pipe, which can be used to clamp straight pipes of different diameters.

[0042] Working principle: when welding the U-shaped pipe, the arc-shaped pipe is placed on the upper ends of the two first clamping blocks 11, so that the two ends of the arc-shaped pipe to be welded are placed upwards, and the electric telescopic rod 145 is driven to retract. The electric telescopic rod 145 drives the first rectangular plate 142 to slide downward through the first rectangular block 144. 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. 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 squeezes the second spring 1431 to prevent excessive squeezing of the arc-shaped pipe. The first rectangular plate 142 drives the bevel block 1422 to slide downward, so that the bevel block 1422 rests on 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. The straight pipe is placed between the two third rubber pads 44, and the second electric sliders 261 on both sides are driven to slide respectively at the lower end of the second electric slide rail 26. The second electric slider 261 drives the telescopic rod 46 to approach the side of the straight pipe through the sixth rectangular bar 45. The telescopic rod 46 drives the arc plate 43 to approach the side of the straight pipe through the U-shaped block 4 until the third rubber pad 44 is tightly attached to both sides. The sixth rectangular bar 45 continues to approach both sides of the straight pipe, causing the telescopic rod 46 to contract and squeeze the third spring 461, causing the third rectangular plate 451 to slide toward the side close to the straight pipe. The third rectangular plate 451 squeezes the fourth rectangular blocks 42 on both sides, driving the fourth rectangular block 42 to rotate outside the third cylindrical rod 41. The fourth rectangular block 42 drives the arc plate 43 to rotate, causing the third rubber pad 44 to wrap around the straight pipe. The straight pipe is clamped on the outside of the material. At this time, the welding head 3 is located in the middle of the straight pipe. Then the third rectangular bar 25 is driven to slide into the inside of the second rectangular tube 24. The third rectangular bar 25 drives the ring 27 to slide downward through the second electric slide 26. The ring 27 drives the fourth rectangular bar 29 to move downward through the circular plate 28. The fourth rectangular bar 29 drives the fifth rectangular bar 291 to slide into the inside of the third rectangular tube 292. The third rectangular bar 25 drives the straight pipe clamped at the lower end to move downward through the second electric slide 26. When the curved plate 43 drives the straight pipe to move downward and is spliced ​​with the curved pipe, the straight pipe slides along the hypotenuse of the bevel block 1422, driving the bevel block 1422 to slide into the inside of the first rectangular plate 142 and squeeze the first spring 1421, so that the straight pipe and the curved pipe are spliced ​​together; 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 on the upper end of the special-shaped plate 1 to rotate through the U-shaped frame 12, and the second rectangular plate 2 simultaneously drives the straight pipe clamped in the middle of the arc plate 43 to rotate. While rotating, the welding head 3 welds the internal joints of the pipe. After the straight pipe is welded to one side of the arc-shaped pipe, the first electric slider 121 is then driven to slide on the upper end of the first electric slide rail 21. The first electric slider 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 of the other side of the arc-shaped pipe that needs to be welded is located at the lower end of the two arc plates 43, and then the other side is welded.

[0043] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A U-shaped pipe welding auxiliary device for ships, comprising a special-shaped plate (1), wherein the middle portion of the special-shaped plate (1) is V-shaped, first clamping blocks (11) are slidably provided on both sides of the upper end of the special-shaped plate (1), the two first clamping blocks (11) are at a 45-degree angle, a second clamping block (14) is slidably provided on the middle portion of the upper end of the special-shaped plate (1), and a sliding assembly is provided at the lower end of the special-shaped plate (1), characterized in that: The sliding assembly comprises a U-shaped frame (12) fixed to the lower end of the special-shaped plate (1), a second rectangular plate (2) is slidably provided at the lower end of the U-shaped frame (12), a rectangular frame (22) is rotatably provided 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 comprises two U-shaped blocks (4) slidably provided at the upper end of the second rectangular plate (2), arc-shaped plates (43) are rotatably provided at two ends of opposite sides of the U-shaped block (4), and a welding head (3) is provided at the upper end of the clamping assembly.

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

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

4. The U-shaped pipe welding auxiliary device for ships according to claim 3, characterized in that: A second spring (1431) is sleeved on the lower end of the second cylindrical rod (143), and the second clamping block (14) is fixedly connected to the first rectangular plate (142) via the second spring (1431).

5. The U-shaped pipe welding auxiliary device for ships according to claim 4, characterized in that: Bevel blocks (1422) are slidably provided inside both sides of the first rectangular plate (142), and the bevel blocks (1422) are fixed inside the first rectangular plate (142) via first springs (1421).

6. The U-shaped pipe welding auxiliary device for ships 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 U-shaped pipe welding auxiliary device for ships according to claim 1, characterized in that: First electric sliders (121) are fixedly connected to both sides of the U-shaped frame (12); first electric slide rails (21) are fixedly connected to the upper ends of the second rectangular plate (2) at positions corresponding to the first electric sliders (121); and the first electric sliders (121) are slidably arranged on the upper ends of the first electric slide rails (21).

8. The U-shaped pipe welding auxiliary device for ships according to claim 1, characterized in that: A second motor (23) is fixedly connected inside the rectangular frame (22), and an 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 U-shaped pipe welding auxiliary device for ships according to claim 1, characterized in that: The second rectangular plate (2) is fixedly connected to both sides of the upper end thereof with a second rectangular cylinder (24), a hydraulic cylinder is provided inside the second rectangular cylinder (24), a third rectangular bar (25) is slidably provided inside the second rectangular cylinder (24), a second electric slide rail (26) is fixedly connected to the opposite side of the third rectangular bar (25), a circular ring (27) is fixedly connected to the opposite end of the second electric slide rail (26), a circular plate (28) is rotatably provided in the middle of the circular ring (27), a rectangular hole (281) is provided in the middle of the circular plate (28), a second rectangular slider (282) is slidably provided inside the rectangular hole (281), the welding head (3) is provided in the middle of the second rectangular slider (282), a fourth rectangular bar (29) is fixedly provided on one side of the circular plate (28), the second rectangular The upper end of the shaped slider (282) is fixedly connected to a second rectangular block (283), the upper end of the fourth rectangular bar (29) is fixedly connected to a third rectangular block (293), the middle part of the third rectangular block (293) is threadedly connected to a screw rod (284), and the screw rod (284) is rotatably arranged on one side of the second rectangular block (283). The end of the fourth rectangular bar (29) away from the circular plate (28) is fixedly connected to a fifth rectangular bar (291), the upper end of the rectangular frame (22) is fixedly connected to a third rectangular tube (292) at a position corresponding to the fifth rectangular bar (291), and the fifth rectangular bar (291) is slidably arranged in the third rectangular tube (292), the welding head (3) is fixedly connected to the welding machine (32) through a wire harness (31), and the welding machine (32) is fixedly connected to one side of the rectangular frame (22).

10. The U-shaped pipe welding auxiliary device for ships according to claim 9, characterized in that: A third cylindrical rod (41) is fixedly connected to one side of the U-shaped block (4), and fourth rectangular blocks (42) are rotatably provided on both sides of the third cylindrical rod (41). The fourth rectangular block (42) is rotatably provided on one side of the arc plate (43), and 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 provided at the lower end of the second electric slide rail (26), and a sixth rectangular bar (45) is fixedly connected to the lower end of the second electric slider (261). The sixth rectangular bar (45) is fixedly connected to the U-shaped block (4) through a telescopic rod (46), and a third spring (461) is sleeved on the outer side of the telescopic rod (46). Third rectangular plates (451) are fixedly connected to both sides of the sixth rectangular bar (45), and the third rectangular plates (451) are respectively located on one side of the fourth rectangular block (42).

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