A welding device for the corner weld of a pressure steel pipe elbow with a stiffening ring

Abstract

The present invention belongs to the technical field of stiffening ring welding, and specifically is a pressure steel pipe bending stiffening ring corner weld welding device, comprising a fixing frame, a welding gun is arranged on the fixing frame, a docking base is arranged in the middle of the bottom end of the fixing frame, two rotating rods are rotatably connected in the docking base, thread grooves are symmetrically opened on the two rotating rods, a displacement block is threadedly connected on the surface of the thread groove, and the thread groove runs through the displacement block; the present invention drives the rotating plate to rotate synchronously through the rotation of the rotating rod two, and then drives the displacement of the guide rod through the guide groove one on the rotating plate, and then controls the extension and contraction of the arc block, so that the arc block is on the same horizontal axis with the arc block during the process of contact with the inner wall of the right-angle bending pipe and the stiffening ring, thereby completing the docking between the right-angle bending pipe and the stiffening ring, improving the accuracy of the docking between the right-angle bending pipe and the stiffening ring, making the installation of the stiffening ring simpler, and further improving the working efficiency of the stiffening ring welding.

Description

Technical Field

[0001] The invention belongs to the technical field of stiffening ring welding, in particular to a stiffening ring fillet welding device for a pressure steel pipe bend. Background Art

[0002] The penstock bending stiffening ring fillet welding device is a device used for welding the connection between the bending part of the penstock and the stiffening ring, and its function is to enhance the overall structural strength of the bending part at the welding point.

[0003] The existing pressure steel pipe elbow stiffening ring corner weld welding device, in the process of elbow stiffening ring welding, first, the two right-angle elbows are accurately aligned and their contact surfaces are welded so that the two elbows firmly form an integral structure. After welding is completed, the fixed elbow is placed on the unloading rack by a crane. Subsequently, with the help of a mechanical arm, half of the stiffening ring is firmly fixed at the welding position so that its inner ring surface is in close contact with the welding portion of the outer surface of the elbow. At this time, half of the stiffening ring and the elbow are welded by a welding gun. During the welding process, the rotating device on the unloading rack is enabled to rotate the welded elbow, thereby successfully completing the welding of this half stiffening ring and the elbow. In order to ensure the integrity of the stiffening ring, the aforementioned process needs to be repeated to dock the other half of the stiffening ring with the previously welded half of the stiffening ring. After docking is completed, welding is continued to ensure that the other half of the stiffening ring is also firmly connected to the elbow. Subsequently, the docking between the stiffening rings is welded to ensure the strength and sealing performance of the entire welding structure, and finally the welding of the elbow and the stiffening ring is completed.

[0004] The existing pressure steel pipe elbow stiffening ring corner weld welding device still has some problems during use. During the welding process of the elbow and the stiffening ring, the two right-angle elbows need to be butt-jointed and welded into one, and then half of the stiffening ring is welded at the connection of the two right-angle elbows, and then the other half of the stiffening ring needs to be welded. During the welding process, this half stiffening ring needs to be butt-jointed with the half stiffening ring welded on the connection of the right-angle elbow. After welding this half stiffening ring to the connection of the right-angle elbow, the joint between the stiffening rings is welded. The process of welding the stiffening rings is relatively complicated. At the same time, when welding the joints between the stiffening rings, the joints of the stiffening rings cannot be completely welded together, and there are unpenetrated areas on the abutting surfaces of the two stiffening rings, which reduces the overall structural strength after welding.

[0005] To this end, the present invention provides a welding device for a pressure steel pipe elbow stiffening ring fillet weld. 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 the technical problem is as follows: the welding device for the corner weld of a pressure steel pipe elbow stiffening ring of the present invention comprises a fixing frame, a welding gun is arranged on the fixing frame, a docking base is arranged at the middle part of the bottom end of the fixing frame, two rotating rods are rotatably connected in the docking base, thread grooves are symmetrically provided on the two rotating rods, displacement blocks are threadedly connected on the surface of the thread grooves, the thread grooves penetrate the displacement blocks, the displacement blocks are slidably connected in the docking base, and a transmission belt is transmission-connected between the two rotating rods;

[0008] The first displacement block is provided with a clamping assembly, and the clamping assembly is used to fix the right-angle elbow;

[0009] A positioning assembly is provided in the middle of the fixing frame, and the positioning assembly is used to make the right-angle elbow and the stiffening ring be on the same horizontal axis;

[0010] The middle part of the docking base is slidably connected with a sliding base, the rotating rod 1 penetrates the sliding base, the sliding base is slidably connected in the docking base, one side of the sliding base is fixedly connected with a transmission rack, the side of the docking base close to the transmission rack is rotatably connected with a rotating gear 1, the transmission rack is meshed with the rotating gear 1, the top surface of the docking base is fixedly connected with a baffle plate, and the top of the sliding base is fixedly connected with an electric telescopic rod 1;

[0011] The telescopic end surface of the electric telescopic rod 1 is fixedly connected with a displacement block 2, two bidirectional threaded rods are rotatably connected inside the displacement block 2, a transmission belt 2 is rotatably connected between the two bidirectional threaded rods, a clamping plate is symmetrically threadedly connected on the surface of the bidirectional threaded rod, and the clamping plate is slidably connected to the displacement block 2, a side of one clamping plate close to the displacement block 2 is fixedly connected with an arc-shaped supporting plate, and a notch is provided on the other clamping plate, and the notch on the clamping plate matches the shape of the arc-shaped supporting plate;

[0012] A spraying assembly is arranged on the top of the fixing frame, and the spraying assembly is used for spraying flux to make the welding of the butted steel pipe and the stiffening ring more complete.

[0013] As a further solution of the present invention, the retaining plate is located on the movement track of the transmission rack, and the second transmission belt is located at one end of the bidirectional threaded rod.

[0014] As a further solution of the present invention, the clamping assembly includes a circular ring block 1, which is fixedly connected to the top of the displacement block 1, and a displacement groove is opened on the circular ring block 1. A clamping rack is slidably connected to the top of the displacement groove, and one end of the clamping rack is meshed with a transmission gear 1, which is rotatably connected in the displacement groove, and an annular rack is slidably connected to the bottom of the displacement groove, and the bottom of the transmission gear 1 is meshed with the annular rack.

[0015] As a further solution of the present invention, the top of the transmission gear 1 is meshed with one side of the clamping rack, and the shape of one end of the clamping rack close to the middle of the displacement groove matches the shape of the outer surface of the right-angle elbow.

[0016] As a further solution of the present invention, the positioning assembly includes a displacement block three, and vertically placed electric guide rails are arranged on both sides of the inner wall of the fixed frame. The displacement block three is fixed on the slider of the electric guide rail. The end of the displacement block three close to the middle of the fixed frame is rotatably connected to a guide gear, and the end of the guide gear away from the displacement block three is fixedly connected to a limiting rod one, and the end of the displacement block three close to the surface of the fixed frame is rotatably connected to a transmission gear two, and the transmission gear two is meshed with the guide gear.

[0017] As a further solution of the present invention, the positioning assembly also includes a second circular ring block, the outer surface of the second circular ring block is fixedly connected to one end of the limiting rod one near the middle of the fixed frame, the inner wall of the second circular ring block is fixedly connected to the second limiting rod, the middle part of the second circular ring block is provided with a fixing cylinder fixedly connected to one end of the limiting rod two near the middle of the second circular ring block, the fixed cylinder is rotatably connected with a rotating rod two inside, the surface of the rotating rod two is fixedly connected with a rotating plate, the rotating plate is provided with a guide groove one, the fixed cylinder is provided with a guide groove two, an arc block is slidably connected in the second guide groove, the second guide groove is connected to the first guide groove, the surface of the arc block is fixedly connected with a guide rod, and the guide rod is located in the first guide groove.

[0018] As a further solution of the present invention, the shape of the rotating plate matches the shape of the interior of the fixed cylinder, and the shape of the arc block at one end away from the middle of the fixed cylinder matches the shape of the inner wall of the right-angle elbow and the shape of the inner wall of the stiffening ring.

[0019] As a further solution of the present invention, the positioning assembly is arranged near the middle of the docking base and is located on one side of the displacement block 2.

[0020] As a further solution of the present invention, the spray assembly includes a guide block, a mechanical arm is arranged in the middle of the top of the fixed frame, the guide block is mounted on the mechanical arm, a rotating groove is opened in the guide block, a side of the rotating groove away from the middle of the fixed frame is rotatably connected to a rotating gear 2, a side of the rotating groove close to the middle of the fixed frame is slidably connected to an arc-shaped rack, the rotating gear 2 is meshed with the arc-shaped rack, and the guide block is symmetrically arranged;

[0021] A liquid storage tank is fixedly connected to the inner surface of an arc-shaped rack, a fixed block fixedly connected to the inner surface of the arc-shaped rack is arranged below the liquid storage tank, an inner cavity groove is opened in the fixed block, the bottom end of the inner cavity groove is fixedly connected to the second electric telescopic rod, the output end of the second electric telescopic rod is fixedly connected to the piston plate, an infusion tube is fixedly connected between the bottom of the liquid storage tank and one side of the bottom of the fixed block, the infusion tube connects the liquid storage tank and the fixed block, a nozzle is fixedly connected to the side of the fixed block away from the inner surface of the arc-shaped rack, the nozzle is located at the top of the fixed block and the nozzle is connected to the inner cavity groove.

[0022] As a further solution of the present invention, the shape formed when the two guide blocks collide is circular, the shape of the arc-shaped rack matches the shape of the rotating groove, the nozzle is arranged at an angle, and when the guide blocks collide, the output end of the nozzle conflicts with the connection between the stiffening ring and the bent pipe.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. The present invention drives the clamping rack to move by the rotation of the transmission gear 1, and then clamps and fixes the right-angle bend pipe located in the circular ring block 1 by the contraction of the clamping rack, so that the docking of the right-angle bend pipe is more stable, and also provides a more solid foundation for the subsequent installation and welding of the stiffening ring.

[0025] 2. The present invention drives the rotating plate to rotate synchronously by rotating the rotating rod 2, and then drives the guide rod to move through the guide groove 1 on the rotating plate, thereby controlling the expansion and contraction of the arc block, so that the arc block and the inner wall of the right-angle bend pipe and the stiffening ring are in the same horizontal axis during the process of the arc block contacting with the arc block, thereby completing the docking between the right-angle bend pipe and the stiffening ring, improving the accuracy of the docking between the right-angle bend pipe and the stiffening ring, making the installation of the stiffening ring simpler, and further improving the working efficiency of the stiffening ring welding. At the same time, the docking of the entire stiffening ring with the right-angle bend pipe avoids the problem of welding the stiffening rings after welding the stiffening rings divided into two halves at the joint of the right-angle bend pipe, thereby ensuring the overall structural strength after welding the stiffening rings.

[0026] 3. The present invention sprays liquid flux through a nozzle, so that the flux enters the connection between the stiffening ring and the bent pipe, further promoting the smoothness of the welding process, making the welding effect significant, and further improving the structural strength of the bent pipe after welding the stiffening ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] Figure 1 It is a schematic elevation diagram of the overall device of the present invention;

[0029] Figure 2 It is a rear view schematic diagram of the overall device of the present invention;

[0030] Figure 3 This is a schematic diagram of the position relationship between the rotating rod 1 and the thread groove of the present invention;

[0031] Figure 4 It is a schematic diagram of the position relationship between the clamping rack and the transmission gear of the present invention;

[0032] Figure 5 It is a schematic diagram of the position relationship between the sliding base and the electric telescopic rod of the present invention;

[0033] Figure 6 For the present invention Figure 5 The enlarged schematic diagram at A in the middle;

[0034] Figure 7 It is a partial structural schematic diagram of the positioning component of the present invention;

[0035] Figure 8 It is a partial structural schematic diagram of the spray assembly of the present invention;

[0036] Fig. 9 It is a schematic diagram of the positional relationship between the arc-shaped rack and the liquid storage tank of the present invention.

[0037] Figure numerals: 1, fixed frame; 11, welding gun; 12, docking base; 13, rotating rod 1; 14, threaded groove; 15, displacement block 1; 16, transmission belt 1; 17, sliding base; 18, transmission rack; 19, rotating gear 1; 110, blocking plate; 111, electric telescopic rod 1; 112, displacement block 2; 113, bidirectional threaded rod; 114, transmission belt 2; 115, clamping plate; 116, arc-shaped support plate;

[0038] 21. Circular ring block 1; 22. Displacement groove; 23. Clamping rack; 24. Transmission gear 1; 25. Annular rack;

[0039] 31. Displacement block three; 32. Guide gear; 33. Limit rod one; 34. Transmission gear two; 35. Ring block two; 36. Limit rod two; 37. Fixed cylinder; 38. Rotating rod two; 39. Rotating plate; 310. Guide groove one; 311. Guide groove two; 312. Arc block; 313. Guide rod;

[0040] 41. Guide block; 42. Rotating groove; 43. Rotating gear 2; 44. Arc rack; 45. Liquid storage tank; 46. Fixed block; 47. Inner cavity groove; 48. Electric telescopic rod 2; 49. Piston plate; 410. Infusion tube; 411. Spray nozzle. DETAILED DESCRIPTION

[0041] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0042] Embodiment 1: Figures 1 to 9 As shown, a pressure steel pipe elbow stiffening ring corner weld welding device according to an embodiment of the present invention comprises a fixing frame 1, a welding gun 11 is arranged on the fixing frame 1, a docking base 12 is arranged at the middle of the bottom end of the fixing frame 1, two rotating rods 13 are rotatably connected in the docking base 12, and thread grooves 14 are symmetrically provided on the two rotating rods 13, and displacement blocks 15 are threadedly connected on the surface of the thread grooves 14, and the thread grooves 14 penetrate the displacement blocks 15, and the displacement blocks 15 are slidably connected in the docking base 12, and a transmission belt 16 is transmission-connected between the two rotating rods 13;

[0043] The displacement block 15 is provided with a clamping assembly, and the clamping assembly is used to fix the right-angle elbow;

[0044] A positioning assembly is provided in the middle of the fixing frame 1, and the positioning assembly is used to make the right-angle elbow and the stiffening ring be on the same horizontal axis;

[0045] A sliding base 17 is slidably connected to the middle of the docking base 12, the rotating rod 13 penetrates the sliding base 17, the sliding base 17 is slidably connected in the docking base 12, a transmission rack 18 is fixedly connected to one side of the sliding base 17, a rotating gear 19 is rotatably connected to the side of the docking base 12 close to the transmission rack 18, the transmission rack 18 is meshed with the rotating gear 19, a baffle plate 110 is fixedly connected to the top surface of the docking base 12, and an electric telescopic rod 111 is fixedly connected to the top of the sliding base 17;

[0046] The telescopic end surface of the electric telescopic rod 111 is fixedly connected with a displacement block 2 112, two bidirectional threaded rods 113 are rotatably connected in the displacement block 2 112, a transmission belt 2 114 is rotatably connected between the two bidirectional threaded rods 113, a clamping plate 115 is symmetrically threadedly connected on the surface of the bidirectional threaded rod 113, the clamping plate 115 is slidably connected in the displacement block 2 112, one side of the clamping plate 115 close to the displacement block 2 112 is fixedly connected with an arc-shaped support plate 116, and a notch is opened on the other clamping plate 115, and the notch on the clamping plate 115 matches the shape of the arc-shaped support plate 116;

[0047] A spraying assembly is provided on the top of the fixing frame 1, and the spraying assembly is used to spray flux to make the welding of the butted steel pipe and the stiffening ring more complete.

[0048] Specifically, the existing pressure steel pipe bending stiffening ring corner weld welding device still has some problems during use. During the welding process of the bending pipe and the stiffening ring, the two right-angle bending pipes need to be butt-jointed and welded into one, and then half of the stiffening ring is welded at the connection of the two right-angle bending pipes, and then the other half of the stiffening ring needs to be welded. During the welding process, this half stiffening ring needs to be butt-jointed with the half stiffening ring welded on the connection of the right-angle bending pipe. After welding this half stiffening ring to the connection of the right-angle bending pipe, the joint between the stiffening rings is welded. The process of welding the stiffening rings is relatively complicated. At the same time, when welding the joint between the stiffening rings, the joint of the stiffening rings cannot be completely welded together, and there are unpenetrated areas on the abutting surfaces of the two stiffening rings, which reduces the overall structural strength after welding.

[0049] Therefore, the present invention solves this problem by setting a corresponding structure. The right-angle bend pipe is placed on the clamping assembly by a crane set on the fixing frame 1, so that the end of the right-angle bend pipe that needs the flux stiffening ring faces the direction close to the middle of the fixing frame 1. At this time, the right-angle bend pipe is fixed by the clamping assembly, and the electric slide rail is used to make the positioning assembly and the right-angle bend pipe joint be on the same horizontal line;

[0050] In the initial state, the displacement block 15 is located at both ends of the rotating rod 13, and the positioning assembly is close to the middle of the docking base 12. At this time, the rotating rod 13 is driven to rotate, and the two rotating rods 13 are rotated synchronously through the transmission of the transmission belt 16. At the same time, the displacement block 15 is displaced in the docking base 12 through the threaded groove 14 during the rotation of the rotating rod 13, thereby driving the clamping assembly on the displacement block 15 to move toward the middle of the docking base 12 until some components in the positioning device are in the internal positioning device at the right-angle elbow joint. At this time, the right-angle elbow is adjusted by the positioning device. During this process, the clamping device slightly loosens the right-angle elbow. At this time, the right-angle elbow joint and the positioning device are adjusted to be on the same horizontal axis, and the positioning device is moved to make the bottom of the right-angle elbow fit with the positioning device. Then the positioning device no longer positions the right-angle elbow, and the displacement block 15 is reset.

[0051] Afterwards, the positioning device is flipped 180 degrees, and the other right-angle bend is positioned through the above operation. At this time, the rotating gear 19 is driven to rotate, and then the sliding base 17 is controlled to move in the direction away from the baffle plate 110 through the transmission rack 18. When it moves to the end point of the transmission rack 18, the rotating gear 19 no longer drives the transmission rack 18 to move, and the entire stiffening ring is placed above the displacement block 2 112 through the crane, so that the cross-sections at both ends of the stiffening ring are between the cross-sections of the two right-angle bends on one side of which the stiffening rings need to be welded, so that the stiffening ring and the positioning device are on the same horizontal line, and then the rotating gear 19 is rotated in the opposite direction to make a partial area of ​​the stiffening ring and the positioning device in the same plane, and then the positioning device is used. The stiffening ring and the right-angle elbow are placed on the same horizontal axis, and then the electric telescopic rod 111 drives the displacement block 112 to move upward, so that the stiffening ring is located between the clamping plates 115, until the outer surface of the stiffening ring contacts the arc-shaped support plate 116, and the two-way threaded rod 113 is driven to rotate, so that the transmission belt 114 drives another two-way threaded rod 113 to rotate together, and then the rotating two-way threaded rod 113 drives the clamping plate 115 to move toward the middle of the displacement block 112. In this process, the arc-shaped support plate 116 is inserted into another clamping plate 115, so that the clamping plate 115 clamps the stiffening ring more stably, and then the sliding base 17 is moved and the positioning device is reset to be located at the top of the fixed frame 1;

[0052] At this time, the displacement blocks 15 move toward each other through the rotation of the rotating rod 13, thereby making the right-angled bends butt-jointed. At this time, the stiffening ring is located on the straight pipe after the right-angled bends are butt-jointed. The welding gun 11 is driven by the manipulator arranged on the fixed frame 1 to weld the butt joints between the right-angled bends, thereby making the right-angled bends a whole. At this time, the rotating gear 19 is rotated to make one end of the transmission rack 18 contact the abutment plate 110, thereby resetting the sliding base 17. Since the sliding base 17 is located in the middle of the butt joint base 12, the thread grooves 14 are symmetrically arranged. At this time, the stiffening ring is located at the butt joint of the right-angled bends after welding, and is symmetrically installed about the butt joints.

[0053] At this time, the mechanical arm arranged on the top of the fixing frame 1 is driven to make the spray assembly surround the elbow and dock, and the flux is sprayed to the connection between the stiffening ring and the elbow through the spray assembly, and then the elbow and the stiffening ring are welded on one side surface by the welding gun 11, and the spray assembly is turned over by the mechanical arm, and then the elbow and the stiffening ring are welded on the other side;

[0054] After welding, the welding gun 11 and the spray assembly are reset, and the bent pipe after the welding stiffening ring is hoisted by a crane. At this time, the clamping assembly is reset and no longer clamps the bent pipe. The bent pipe after the welding stiffening ring is taken away by a crane to prepare for the next welding.

[0055] like Figure 1 , Figure 5 and Figure 6 As shown, the retaining plate 110 of this embodiment is located on the movement track of the transmission rack 18 , and the transmission belt 2 114 is located at one end of the bidirectional threaded rod 113 .

[0056] Specifically, when one end of the transmission rack 18 contacts the abutment plate 110, the transmission rack 18 no longer moves; the transmission belt 2 114 is located at one end of the bidirectional threaded rod 113, and thus will not hinder the movement of the bidirectional threaded rod 113 and the movement thereon.

[0057] like Figure 1 , Figure 3 and Figure 4 As shown, the clamping assembly described in this embodiment includes a circular ring block 21, and the circular ring block 21 is fixedly connected to the top of the displacement block 15. The circular ring block 21 is provided with a displacement groove 22. The top of the displacement groove 22 is slidably connected with a clamping rack 23, one end of the clamping rack 23 is meshed with a transmission gear 24, and the transmission gear 24 is rotatably connected in the displacement groove 22. The bottom of the displacement groove 22 is slidably connected with an annular rack 25, and the bottom of the transmission gear 24 is meshed with the annular rack 25.

[0058] Specifically, the clamping rack 23 and the transmission gear 24 are provided with a plurality of them. When the driving transmission gear 24 is driven to rotate clockwise, the rotation of the transmission gear 24 drives the annular rack 25 to rotate clockwise in the displacement groove 22, and drives the remaining transmission gears 24 to rotate, thereby synchronously driving the clamping rack 23 to move toward the direction close to the middle of the circular ring block 21, thereby clamping and fixing the right-angled bend pipe placed in the middle of the circular ring block 21. When the driving transmission gear 24 is driven to rotate in the opposite direction, through the above operation, the clamping rack 23 is displaced in the direction away from the middle of the circular ring block 21, thereby no longer clamping the right-angled bend pipe in the middle of the circular ring block 21;

[0059] The present invention drives the clamping rack 23 to move by the rotation of the transmission gear 24, and then clamps and fixes the right-angle bend pipe located in the circular ring block 21 by the contraction of the clamping rack 23, so that the docking of the right-angle bend pipe is more stable, and also provides a more solid foundation for the subsequent installation and welding of the stiffening ring.

[0060] like Figure 3 and Figure 4 As shown, the top of the transmission gear 24 of this embodiment is meshed with one side of the clamping rack 23, and the shape of one end of the clamping rack 23 close to the middle of the displacement groove 22 matches the shape of the outer surface of the right-angle elbow.

[0061] Specifically, the transmission gear 24 is meshed with the clamping rack 23, thereby driving the clamping rack 23 to move; and the clamping rack 23 is matched with the shape of the contact surface of the right-angled bend pipe, so that the clamping rack 23 fixes the right-angled bend pipe more stably.

[0062] Embodiment 2: Figures 2 to 9 As shown, compared with Example 1, another implementation of the present invention is:

[0063] like Figure 2 As shown, the positioning assembly described in this embodiment includes a displacement block three 31, and vertically placed electric guide rails are arranged on both sides of the inner wall of the fixed frame 1. The displacement block three 31 is fixed on the slider of the electric guide rail, and the end of the displacement block three 31 close to the middle of the fixed frame 1 is rotatably connected to a guide gear 32, and the end of the guide gear 32 away from the displacement block three 31 is fixedly connected to a limiting rod one 33, and the end of the displacement block three 31 close to the surface of the fixed frame 1 is rotatably connected to a transmission gear two 34, and the transmission gear two 34 is meshed with the guide gear 32.

[0064] Specifically, in the process of positioning the right-angle bend pipe and the stiffening ring, the electric guide rail drives the displacement block three 31 to move vertically, and then the movement of the displacement block three 31 drives the remaining structures in the positioning assembly to move synchronously. The ratio of the number of teeth of the guide gear 32 to the number of teeth of the transmission gear two 34 is two to one. When it is necessary to flip over, the transmission gear two 34 is driven to rotate one circle, and then the guide gear 32 is rotated one hundred and eighty degrees, so that the structure between the guide gears 32 rotates synchronously with the rotation of the guide gear 32.

[0065] like Figure 2 and Figure 7 As shown, the positioning assembly described in this embodiment also includes a circular ring block 35, the outer surface of which is fixedly connected to one end of the limiting rod 33 near the middle of the fixed frame 1, and a limiting rod 36 is fixedly connected to the inner wall of the circular ring block 35. A fixing cylinder 37 fixedly connected to one end of the limiting rod 36 near the middle of the circular ring block 35 is provided in the middle of the circular ring block 35, and a rotating rod 38 is rotatably connected inside the fixing cylinder 37, and a rotating plate 39 is fixedly connected to the surface of the rotating rod 38, a guide groove 310 is provided on the rotating plate 39, a guide groove 310 is provided on the fixing cylinder 37, a guide groove 2 311 is provided on the fixing cylinder 37, an arc block 312 is slidably connected in the guide groove 2 311, the guide groove 2 311 is communicated with the guide groove 1 310, a guide rod 313 is fixedly connected to the surface of the arc block 312, and the guide rod 313 is located in the guide groove 1 310.

[0066] Specifically, since the annular block 2 35 is fixed between the limiting rods 1 33 and the limiting rods 2 36 are arranged in a circular array in the annular block 2 35, the fixing cylinder 37 is fixed at the center of the annular block 2 35. When the fixing cylinder 37 and the right-angled bend pipe docking surface are in the same straight line and part of the fixing cylinder 37 enters the right-angled bend pipe docking surface, the rotating rod 2 38 is driven to rotate counterclockwise, and then the guide rod 313 drives the arc block 312 to extend under the limitation of the guide groove 1 310 and the guide groove 2 311 through the rotation of the rotating plate 39, so that the arc block 312 contacts the inside of the docking surface of the right-angled bend pipe, so that the right-angled bend pipe and the fixing cylinder 37 are in the same horizontal axis;

[0067] The present invention drives the rotating plate 39 to rotate synchronously through the rotation of the rotating rod 2 38, and then drives the guide rod 313 to move through the guide groove 1 310 on the rotating plate 39, thereby controlling the expansion and contraction of the arc block 312, so that the arc block 312 and the inner wall of the right-angle bend pipe and the stiffening ring are in the same horizontal axis during the process of the arc block 312 contacting with the inner wall of the right-angle bend pipe and the stiffening ring, thereby completing the docking between the right-angle bend pipe and the stiffening ring, improving the accuracy of the docking between the right-angle bend pipe and the stiffening ring, making the installation of the stiffening ring simpler, and further improving the work efficiency of the stiffening ring welding. At the same time, the docking of the entire stiffening ring with the right-angle bend pipe avoids the problem of welding the stiffening rings after welding the stiffening rings divided into two halves at the right-angle bend pipe joint, thereby ensuring the overall structural strength after welding the stiffening rings.

[0068] like Figure 2 and Figure 7 As shown, the shape of the rotating plate 39 in this embodiment matches the shape of the interior of the fixed cylinder 37, and the shape of the arc block 312 at one end away from the middle of the fixed cylinder 37 matches the shape of the inner wall of the right-angle elbow and the shape of the inner wall of the stiffening ring.

[0069] Specifically, the shape of the rotating plate 39 matches the shape of the interior of the fixed cylinder 37, so that the rotating plate 39 rotates inside the fixed cylinder 37; the shapes match, so that the arc block 312 is in more comprehensive contact with its inner wall, and can also play a certain clamping role while positioning, so that the joint of the right-angle elbow after positioning and the stiffening ring and the arc block 312 are on the same horizontal axis.

[0070] like Figure 2 As shown, the positioning assembly described in this embodiment is arranged near the middle of the docking base 12 and is located on one side of the displacement block 2 112 .

[0071] Specifically, the setting of this position facilitates the positioning of another right-angle elbow after subsequent flipping.

[0072] like Figure 2 , Figure 8 and Fig. 9As shown, the spray assembly of this embodiment includes a guide block 41, a mechanical arm is arranged in the middle of the top of the fixing frame 1, and the guide block 41 is installed on the mechanical arm. A rotating groove 42 is opened in the guide block 41, and a rotating gear 2 43 is rotatably connected to the side of the rotating groove 42 away from the middle of the fixing frame 1, and an arc-shaped rack 44 is slidably connected to the side of the rotating groove 42 close to the middle of the fixing frame 1, and the rotating gear 2 43 is meshed with the arc-shaped rack 44, and the guide block 41 is symmetrically arranged;

[0073] A liquid storage tank 45 is fixedly connected to the inner surface of an arc-shaped rack 44, and a fixed block 46 fixedly connected to the inner surface of the arc-shaped rack 44 is arranged below the liquid storage tank 45. An inner cavity groove 47 is opened in the fixed block 46, and an electric telescopic rod 48 is fixedly connected to the bottom end of the inner cavity groove 47. The output end of the electric telescopic rod 48 is fixedly connected to a piston plate 49. An infusion tube 410 is fixedly connected between the bottom of the liquid storage tank 45 and one side of the bottom of the fixed block 46. The infusion tube 410 connects the liquid storage tank 45 and the fixed block 46. A nozzle 411 is fixedly connected to the side of the fixed block 46 away from the inner surface of the arc-shaped rack 44. The nozzle 411 is located at the top of the fixed block 46 and the nozzle 411 is communicated with the inner cavity groove 47.

[0074] Specifically, because the guide blocks 41 are symmetrically arranged, the arc-shaped rack 44 thereon will not slide out of the rotating groove 42 under the action of the second rotating gear 43 being stationary. After the right-angle elbow joint is welded and the stiffening ring is installed, the guide blocks 41 are driven by the mechanical arm to move relative to each other, so that the guide blocks 41 are mutually abutted and form a circular ring sleeve, and the elbow and the stiffening ring are located in the middle of the guide blocks 41. At this time, by driving a second rotating gear 43 to rotate, the arc-shaped rack 44 slides inside the rotating groove 42, and slides into the rotating groove 42 of the other guide block 41 as the second rotating gear 43 rotates.

[0075] Initially, the liquid storage tank 45 is filled with liquid flux, and the piston plate 49 is located between the injection port connected to the infusion pipe 410 and the infusion port connected to the nozzle 411 at the bottom of the inner cavity groove 47. At this time, the space between the piston plate 49 and the inner cavity groove 47 is filled with flux. During this process, the electric telescopic rod 48 is started, so that the liquid storage tank 45 and the fixed block 46 on an arc-shaped rack 44 rotate synchronously with the arc-shaped rack 44. The flux between the inner cavity groove 47 and the piston plate 49 is injected into the nozzle 411 through the infusion port through the extension of the electric telescopic rod 48, and then sprayed between the elbow and the stiffening ring through the nozzle 411, until the fixed block 46 returns to the initial position with the rotation of the arc-shaped rack 44. At this time, a circle of flux has been sprayed on the contact surface of the elbow and the stiffening ring, and the guide block 41 is turned over by the mechanical arm, and then the flux is sprayed on the other side through the above operation;

[0076] The present invention sprays liquid soldering flux through the nozzle 411, so that the soldering flux enters the connection between the stiffening ring and the bent pipe, further promoting the smoothness of the welding process, making the welding effect significant, and further improving the structural strength of the bent pipe after welding the stiffening ring.

[0077] like Figure 8 and Fig. 9 As shown, in this embodiment, the shape formed when the two guide blocks 41 collide is circular, the shape of the arc-shaped rack 44 matches the shape of the rotating groove 42, the nozzle 411 is arranged at an angle, and when the guide blocks 41 collide, the output end of the nozzle 411 conflicts with the connection between the stiffening ring and the bent pipe.

[0078] Specifically, the shape formed when the two guide blocks 41 collide is set to a circle, which is convenient for the subsequent spraying of flux; the shape of the arc rack 44 matches the rotating groove 42, so that when the guide blocks 41 collide, the two arc racks 44 collide to form a circle, which is convenient for the subsequent spraying of flux; when the guide blocks 41 collide, the output end of the nozzle 411 collide with the connection between the stiffening ring and the elbow, which is convenient for the nozzle 411 to spray the flux into the connection between the elbow and the stiffening ring.

[0079] Working principle:

[0080] The right-angled pipe is placed in the middle of the circular block 1 21 by the crane provided on the fixing frame 1, and then the transmission gear 1 24 is driven to rotate clockwise, thereby driving the displacement groove 22 to rotate, thereby displacing the clamping rack 23, and fixing the right-angled pipe. At this time, the displacement block 3 31 is driven to move vertically by the electric slide rail, and then the movement of the displacement block 3 31 drives the rest of the structures in the positioning assembly to move synchronously, so that the fixing cylinder 37 and the right-angled pipe joint are on the same horizontal line;

[0081] In the initial state, the displacement block 15 is located at both ends of the rotating rod 13, and the positioning assembly is close to the middle of the docking base 12. At this time, the rotating rod 13 is driven to rotate, and the two rotating rods 13 are rotated synchronously through the transmission of the transmission belt 16. At the same time, the displacement block 15 is displaced in the docking base 12 through the threaded groove 14 during the rotation of the rotating rod 13, thereby driving the clamping assembly on the displacement block 15 to move toward the direction close to the middle of the docking base 12 until the fixed tube 37 is partially inside the right-angle elbow docking. At this time, the rotating rod 2 38 is driven to rotate counterclockwise. , and then the guide rod 313 drives the arc block 312 to extend under the limit of the guide groove 1 310 and the guide groove 2 311 through the rotation of the rotating plate 39, so that the arc block 312 contacts the inside of the docking surface of the right-angled pipe, and then the right-angled pipe and the fixed cylinder 37 are on the same horizontal axis. In this process, the transmission gear 1 24 is driven to rotate counterclockwise, so that the clamping rack 23 slightly loosens the right-angled pipe, and then the displacement block 3 31 is moved to make the bottom of the right-angled pipe fit with the inside of the circular ring block 1 21, and then the arc block 312 no longer positions the right-angled pipe, and the displacement block 1 15 is reset;

[0082] After that, the guide gear 32 is flipped 180 degrees, and another right-angle bend is positioned through the above operation. At this time, the rotating gear 19 is driven to rotate, and then the sliding base 17 is controlled to move in the direction away from the baffle plate 110 through the transmission rack 18. When it moves to the end point of the transmission rack 18, the rotating gear 19 no longer drives the transmission rack 18 to move. The entire stiffening ring is placed above the displacement block 2 112 through the crane, so that the stiffening ring and the arc block 312 are on the same horizontal line, and then the rotating gear 19 is rotated in the opposite direction to make a part of the stiffening ring and the fixed tube 37 in the same plane, and then the stiffening ring and the right-angle bend are on the same horizontal line through the arc block 312. The horizontal axis is then driven by the electric telescopic rod 111 to drive the displacement block 112 to move upward, so that the stiffening ring is located between the clamping plates 115, until the outer surface of the stiffening ring contacts the arc-shaped support plate 116, and the two-way threaded rod 113 is driven to rotate, so that the transmission belt 114 drives another two-way threaded rod 113 to rotate together, and then the rotating two-way threaded rod 113 drives the clamping plate 115 to move toward the middle of the displacement block 112. In this process, the arc-shaped support plate 116 is inserted into another clamping plate 115, so that the clamping plate 115 clamps the stiffening ring more stably, and then the sliding base 17 is moved and the positioning device is reset to be located at the top of the fixed frame 1;

[0083] At this time, the displacement blocks 15 move toward each other through the rotation of the rotating rod 13, thereby making the right-angled bends butt-jointed. At this time, the stiffening ring is located on the straight pipe after the right-angled bends are butt-jointed. The welding gun 11 is driven by the manipulator arranged on the fixed frame 1 to weld the butt joints between the right-angled bends, thereby making the right-angled bends a whole. At this time, the rotating gear 19 is rotated to make one end of the transmission rack 18 contact the abutment plate 110, thereby resetting the sliding base 17. Since the sliding base 17 is located in the middle of the butt joint base 12, the thread grooves 14 are symmetrically arranged. At this time, the stiffening ring is located at the butt joint of the right-angled bends after welding, and is symmetrically installed about the butt joints.

[0084] At this time, the mechanical arm arranged on the top of the fixed frame 1 is driven to make the guide blocks 41 collide with each other and form a circular ring, and at the same time, the bent pipe and the stiffening ring are located in the middle of the guide block 41. At this time, by driving a rotating gear 43 to rotate, the arc-shaped rack 44 slides inside the rotating groove 42, and slides into the rotating groove 42 of another guide block 41 as the rotating gear 43 rotates.

[0085] Initially, the liquid storage tank 45 is filled with liquid flux, and the piston plate 49 is located between the injection port connected to the infusion pipe 410 and the infusion port connected to the nozzle 411 at the bottom of the inner cavity groove 47. At this time, the space between the piston plate 49 and the inner cavity groove 47 is filled with flux. During this process, the electric telescopic rod 48 is started, so that the liquid storage tank 45 and the fixed block 46 on an arc-shaped rack 44 rotate synchronously with the arc-shaped rack 44. The flux between the inner cavity groove 47 and the piston plate 49 is injected into the nozzle 411 through the infusion port through the extension of the electric telescopic rod 48, and then sprayed between the elbow and the stiffening ring through the nozzle 411, until the fixed block 46 returns to the initial position with the rotation of the arc-shaped rack 44. At this time, a circle of flux has been sprayed on the contact surface of the elbow and the stiffening ring, and the guide block 41 is turned over by the mechanical arm, and then the flux is sprayed on the other side through the above operation;

[0086] After welding, the welding gun 11 and the spray assembly are reset, and the bent pipe after the welding stiffening ring is hoisted by a crane. At this time, the clamping rack 23 is reset and no longer clamps the bent pipe. The bent pipe after the welding stiffening ring is taken away by the crane to prepare for the next welding.

[0087] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A welding device for a stiffening ring fillet weld of a penstock pipe bend, characterized in that: The invention comprises a fixing frame (1), wherein a welding gun (11) is arranged on the fixing frame (1), a docking base (12) is arranged at the middle part of the bottom end of the fixing frame (1), two rotating rods (13) are rotatably connected in the docking base (12), the two rotating rods (13) are symmetrically provided with thread grooves (14), the surface of the thread grooves (14) is threadedly connected with a displacement block (15), the thread grooves (14) penetrate the displacement block (15), the displacement block (15) is slidably connected in the docking base (12), and a transmission belt (16) is transmission-connected between the two rotating rods (13); The displacement block 1 (15) is provided with a clamping assembly, and the clamping assembly is used to fix the right-angle elbow; A positioning assembly is provided in the middle of the fixing frame (1), and the positioning assembly is used to place the right-angle elbow and the stiffening ring on the same horizontal axis; The middle part of the docking base (12) is slidably connected to a sliding base (17), the rotating rod (13) passes through the sliding base (17), the sliding base (17) is slidably connected in the docking base (12), one side of the sliding base (17) is fixedly connected to a transmission rack (18), the side of the docking base (12) close to the transmission rack (18) is rotatably connected to a rotating gear (19), the transmission rack (18) is meshed with the rotating gear (19), the top surface of the docking base (12) is fixedly connected to a stop plate (110), and the top end of the sliding base (17) is fixedly connected to an electric telescopic rod (111); The telescopic end surface of the electric telescopic rod 1 (111) is fixedly connected to a displacement block 2 (112); two bidirectional threaded rods (113) are rotatably connected inside the displacement block 2 (112); a transmission belt 2 (114) is rotatably connected between the two bidirectional threaded rods (113); a clamping plate (115) is symmetrically threadedly connected to the surface of the bidirectional threaded rod (113); the clamping plate (115) is slidably connected to the displacement block 2 (112); a side of one clamping plate (115) close to the displacement block 2 (112) is fixedly connected to an arc-shaped support plate (116); a notch is provided on the other clamping plate (115); the notch on the clamping plate (115) matches the shape of the arc-shaped support plate (116); A spraying assembly is provided on the top of the fixing frame (1), and the spraying assembly is used to spray flux so that the steel pipe and the stiffening ring are welded more fully after being butted.

2. A penstock elbow stiffening ring fillet weld welding device according to claim 1, characterized in that: The retaining plate (110) is located on the movement track of the transmission rack (18), and the second transmission belt (114) is located at one end of the bidirectional threaded rod (113).

3. A penstock elbow stiffening ring fillet weld welding device according to claim 1, characterized in that: The clamping assembly comprises a circular ring block (21), the circular ring block (21) being fixedly connected to the top of a displacement block (15), the circular ring block (21) being provided with a displacement groove (22), the top of the displacement groove (22) being slidably connected to a clamping rack (23), one end of the clamping rack (23) being meshed with a transmission gear (24), the transmission gear (24) being rotatably connected in the displacement groove (22), the bottom of the displacement groove (22) being slidably connected to an annular rack (25), the bottom of the transmission gear (24) being meshed with the annular rack (25).

4. A penstock elbow stiffening ring fillet weld welding device according to claim 3, characterized in that: The top of the transmission gear 1 (24) meshes with one side of the clamping rack (23), and the shape of one end of the clamping rack (23) close to the middle of the displacement groove (22) matches the shape of the outer surface of the right-angle elbow.

5. The device for welding a stiffening ring fillet weld of a penstock elbow according to claim 1, characterized in that: The positioning assembly comprises a displacement block three (31). Both sides of the inner wall of the fixed frame (1) are provided with vertically placed electric guide rails. The displacement block three (31) is fixed on the slider of the electric guide rail. One end of the displacement block three (31) close to the middle of the fixed frame (1) is rotatably connected to a guide gear (32). One end of the guide gear (32) away from the displacement block three (31) is fixedly connected to a limit rod one (33). One end of the displacement block three (31) close to the surface of the fixed frame (1) is rotatably connected to a transmission gear two (34). The transmission gear two (34) is meshed with the guide gear (32).

6. A penstock elbow stiffening ring fillet weld welding device according to claim 5, characterized in that: The positioning assembly further comprises a second circular ring block (35), the outer surface of the second circular ring block (35) being fixedly connected to one end of the first limiting rod (33) near the middle of the fixing frame (1), the inner wall of the second circular ring block (35) being fixedly connected to the second limiting rod (36), the middle of the second circular ring block (35) being provided with a fixing cylinder (37) fixedly connected to one end of the second limiting rod (36) near the middle of the second circular ring block (35), the fixing cylinder (37) being rotatably connected to the second rotating rod (38) inside. A rotating plate (39) is fixedly connected to the surface of the second rotating rod (38), a guide groove (310) is provided on the rotating plate (39), a guide groove (311) is provided on the fixed cylinder (37), an arc block (312) is slidably connected in the second guide groove (311), the second guide groove (311) is connected to the first guide groove (310), a guide rod (313) is fixedly connected to the surface of the arc block (312), and the guide rod (313) is located in the first guide groove (310).

7. A penstock elbow stiffening ring fillet weld welding device according to claim 6, characterized in that: The shape of the rotating plate (39) matches the shape of the interior of the fixed cylinder (37), and the shape of the end of the arc block (312) away from the middle of the fixed cylinder (37) matches the shape of the inner wall of the right-angle elbow and the shape of the inner wall of the stiffening ring.

8. A penstock elbow stiffening ring fillet weld welding device according to claim 6, characterized in that: The positioning component is arranged near the middle of the docking base (12) and is located on one side of the second displacement block (112).

9. A penstock elbow stiffening ring fillet weld welding device according to claim 1, characterized in that: The spraying assembly comprises a guide block (41), a mechanical arm is arranged in the middle of the top end of the fixed frame (1), the guide block (41) is mounted on the mechanical arm, a rotating groove (42) is provided in the guide block (41), a side of the rotating groove (42) away from the middle of the fixed frame (1) is rotatably connected to a second rotating gear (43), a side of the rotating groove (42) close to the middle of the fixed frame (1) is slidably connected to an arc-shaped rack (44), the second rotating gear (43) is meshed with the arc-shaped rack (44), and the guide block (41) is symmetrically arranged; A liquid storage tank (45) is fixedly connected to the inner surface of an arc-shaped rack (44); a fixed block (46) fixedly connected to the inner surface of the arc-shaped rack (44) is arranged below the liquid storage tank (45); an inner cavity groove (47) is provided in the fixed block (46); a second electric telescopic rod (48) is fixedly connected to the bottom end of the inner cavity groove (47); a piston plate (49) is fixedly connected to the output end of the second electric telescopic rod (48); a liquid infusion tube (410) is fixedly connected between the bottom of the liquid storage tank (45) and one side of the bottom of the fixed block (46); the liquid infusion tube (410) connects the liquid storage tank (45) and the fixed block (46); a nozzle (411) is fixedly connected to the side of the fixed block (46) away from the inner surface of the arc-shaped rack (44); the nozzle (411) is located at the top of the fixed block (46) and is in communication with the inner cavity groove (47).

10. A penstock elbow stiffening ring fillet weld welding device according to claim 9, characterized in that: The shape formed when the two guide blocks (41) collide is circular, the shape of the arc-shaped rack (44) matches the shape of the rotating groove (42), the nozzle (411) is arranged tilted, and when the guide blocks (41) collide, the output end of the nozzle (411) collide with the connection between the stiffening ring and the bent pipe.

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