Automatic correcting and aligning device for steel pipe welding

Abstract

The invention discloses an automatic correcting and aligning device for steel pipe welding, and belongs to the technical field of steel pipe welding. Comprising a controller for complete machine control, a base, a sliding seat, a compensation detection unit, a compensation unit, a second pipe groove seat, a correction detection response unit and a pipe pressing unit, and a first pipe groove seat is fixed to the top of the rear side of the base; a middle sliding groove and side grooves are formed in the middle of the front side and the two outer side sides of the first pipe groove base of the base correspondingly. Positioning grooves are formed in two sides of the middle sliding groove on the top surface of the base; the sliding seat comprises a sliding plate arranged on the inner side of the middle sliding groove in a sliding mode and a sliding block arranged above the edge groove in a sliding mode. A hollow groove is formed in the middle of the sliding plate; sliding holes are formed in two ends of the sliding plate and the sliding block; the outer part of the sliding block is screwed with a handle which is tightly propped against the base; according to the automatic correcting and aligning device for steel pipe welding, two steel pipes to be welded can be automatically aligned and subjected to fall compensation, and automatic correcting and aligning of the two steel pipes are achieved.

Description

Technical Field

[0001] The invention specifically relates to an automatic correction and alignment device for steel pipe welding, and belongs to the technical field of steel pipe welding. Background Art

[0002] When processing welded steel pipes, two or more sections of pipes need to be welded, so a correction and alignment device is needed; the existing correction and alignment devices for steel pipe welding have the following problems during use: the traditional alignment method is manual alignment by workers, which is easy to cause large errors, affecting the processing between pipes, and at the same time brings inconvenience to the operation of workers and increases the workload of workers; for this reason, Chinese patent authorization announcement number: CN111069842B discloses an automatic correction and alignment device for steel pipe welding, including a base, a hydraulic cylinder and a first magnet, an operating table is arranged above the base, and a first mounting seat is installed inside the operating table, and the second connecting gear is connected to the second mounting seat through the second mounting seat. The seat is connected to the second connecting rod, and a clamping block is installed at one end of the fixed rod close to the center line of the operating table, and a pad is connected to the inner wall of the clamping block, and a second magnet is connected to the inner wall of the groove, and a through groove is opened inside the placement plate and the bottom plate, and a locking rod is connected inside the through groove, and the bottom of the protective plate is connected to the operating table; the automatic correction and alignment device for steel pipe welding, when welding and aligning, drives the first connecting rod and the second connecting rod to pull the fixed rod up and down through the hydraulic cylinder, so that the clamping block can be driven to move through the fixed rod, so that steel pipes of different diameters can be aligned and corrected; but when aligning the ends of the steel pipes, the steel pipe as a whole is still in an inclined state, and the two steel pipes cannot be accurately aligned. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes an automatic correction and alignment device for steel pipe welding, which can automatically align and compensate for the drop of two steel pipes to be welded, thereby realizing automatic correction and alignment of the two steel pipes.

[0004] The steel pipe welding automatic correction and alignment device of the present invention comprises: Controller for whole machine control; A base, wherein a first tube slot seat is fixed on the top of the rear side of the base; a middle slide slot and a side slot are respectively provided on the middle part of the front side and two outer sides of the first tube slot seat; and adjustment slots are provided on both sides of the middle slide slot on the top surface of the base; The sliding seat comprises a sliding plate slidably arranged inside the middle sliding groove, and a sliding block slidably arranged above the side groove; a hollow groove is provided in the middle of the sliding plate; sliding holes are provided at both ends of the sliding plate and the sliding block; a crank handle is screwed on the outside of the sliding block and is tightly pressed against the base; A compensation detection unit, the compensation detection unit comprising a first grating ruler fixed below the slider, a detection head slidably arranged above the first grating ruler, and a protrusion integrally formed at the bottom of the slider to fit with the detection head; A compensation unit, the compensation unit comprises a force-bearing plate movably engaged with the inner side of the adjustment groove, a ramp platform with an isosceles triangle structure is integrally formed in the middle of the bottom surface of the force-bearing plate, and the adjustment groove is respectively fitted with ramp top blocks on both sides of the ramp platform; two of the ramp top blocks are screwed with screw rods, both ends of the screw rods are screwed to bearings, one end of the screw rod passes through the bearing and is connected to a bevel gear commutator; the other ends of the two bevel gear commutators are fixed to the drive shaft, a transmission gear disc is fixed in the middle of the drive shaft, and the transmission gear disc is meshed with the drive gear disc on the output shaft of the compensation motor; A second pipe slot seat; a sliding column is fixed to the bottom of the second pipe slot seat, and the sliding column is movably engaged with the sliding hole; A correction detection response unit, the correction detection response unit comprises two through slots opened at the bottom and side of the first tube slot seat and the second tube slot seat; the first tube slot seat and the second tube slot seat are fixed with a seat plate outside the through slot, a plurality of guide rods are slidably arranged on the seat plate, and a top pressure block is fixed at the front end of the guide rod; a first hydraulic cylinder and a second grating ruler are fixed on the seat plate, and the telescopic end of the first hydraulic cylinder is fixed to the top pressure block through a pressure monitoring unit; a connecting plate is fixed between the detection head of the second grating ruler and the top pressure block; The tube pressing unit is slidably arranged on the first tube slot seat and the second tube slot seat.

[0005] During operation, the welding ends of the two steel pipes are placed on the first pipe slot seat and the second pipe slot seat respectively; the welding ends of the steel pipes protrude from the outside of the first pipe slot seat and the second pipe slot seat; then, the pipe pressing unit is controlled to press and limit the steel pipe on the first pipe slot seat, and then, the correction detection response unit on the first pipe slot seat detects the steel pipe. During the detection, the first hydraulic cylinder pushes the top pressure block to move, so that the top pressure block presses the side and bottom surfaces of the outer surface of the steel pipe; when the top pressure block presses the steel pipe, when the pressure monitoring unit detects the set pressure value, the first hydraulic cylinder stops moving, and at the same time, the connecting plate drives the detection head of the second grating ruler to move synchronously. At this time, the current displacement value is obtained through the second grating ruler; the steel pipe is calculated according to the current displacement value and the inclination angle of the first tube slot seat; the correction detection response unit on the second tube slot seat synchronously responds to the alignment action according to the detected inclination angle, specifically: the correction detection response unit of the second tube slot seat is actuated, and the extension length of the first hydraulic cylinder of the second tube slot seat is calculated according to the inclination angle detected by the correction detection response unit on the first tube slot seat, and the second grating ruler is used to monitor in real time whether the calculated extension length is reached, and after the extension length is reached, the first hydraulic cylinder locks the position of the top pressure block; then, the tube pressing unit cooperates with the second tube slot seat to lock the position of the steel pipe. When the position is locked, the second grating ruler is used to monitor in real time whether a position offset occurs. When a position offset occurs, the first hydraulic cylinder is used to correct it in real time; Next, a compensation detection is performed through the compensation detection unit. During the detection, the current position of the detection head of the first grating ruler is set as the initial position. Then, the second tube slot seat is pushed to move, so that the sliding seat at the bottom of the second tube slot seat slides until the welding ends of the two steel pipes are butted. Then, the position of the sliding seat is locked by shaking the hand. After the adjustment is completed, the displacement difference between the current position and the initial position is detected by the detection head of the first grating ruler, and the height compensation value is calculated according to the displacement difference. Next, the compensation unit and the compensation motor start to work. The compensation motor drives the drive shaft to rotate through the driving gear plate and the transmission gear plate. The drive shaft drives the bevel gear commutators at both ends to move synchronously. The bevel gear commutators drive the lead screw to move synchronously, so that the two slope top blocks move closer to or away from each other, thereby driving the slope platform up or down. The lifting height of the force plate is the calculated height compensation value. Thus, the two steel pipes are automatically corrected and aligned, and they wait for welding.

[0006] Furthermore, the pipe pressing unit includes a frame seat body movably engaged with the first pipe groove seat and the second pipe groove seat, and two groups of second hydraulic cylinders are fixed on the top surface of the frame seat body; a pressing frame is arranged on the inner side of the frame seat body, and pressing wheels are rotatably arranged on both sides of the bottom of the pressing frame; the pressing frame is fixed to the piston rod of the second hydraulic cylinder; the pressing wheels are pressed on both sides of the upper part of the steel pipe to be welded; the second hydraulic cylinder can drive the pressing frame downward or upward, so that the pressing wheels on the pressing frame can press or detach from the steel pipe.

[0007] Furthermore, it also includes a lever fulcrum unit, which includes a lifting platform, a roller seat is fixed at the lifting end of the lifting platform, side rollers arranged in a V-shape are arranged on the roller seat, and intermediate rollers are arranged between the side rollers for rolling; the steel pipe is mounted on the lever fulcrum unit, and the steel pipe uses the lever fulcrum unit as a fulcrum, and the steel pipe can swing up and down and horizontally along the lever fulcrum unit; thereby facilitating the correction detection response unit of the second pipe slot seat to adjust and respond to the welding end of the steel pipe, and the intermediate roller body can facilitate the guidance of the steel pipe on the second pipe slot seat, so that the steel pipe on the second pipe slot seat can smoothly approach or move away from the first pipe slot seat.

[0008] Furthermore, the pressure monitoring unit includes a first disc seat and a second disc seat fixed to the outside of the top pressure block, a plurality of limit screws are fixed on the first disc seat at intervals, a pressure transmitter is fixed at the center of the first disc seat, the second disc seat is slidably installed on the limit screw and is screwed with a limit nut, and a flange fixed to the telescopic end of the first hydraulic cylinder is arranged on the outside of the second disc seat; a detection gap exceeding the thickness of the pressure transmitter is arranged between the first disc seat and the second disc seat; during operation, when the first hydraulic cylinder does not push the second disc seat forward, at this time, due to the detection gap between the first disc seat and the second disc seat, at this time, the pressure transmitter has no pressure output, and when the second disc seat pushes the first disc seat forward, the first disc seat pushes the top pressure block to press against the steel pipe, and when the top pressure block is limited by the steel pipe; and the first hydraulic cylinder continues to apply pressure, at this time, the pressure transmitter detects the pressure value in real time, until the pressure value reaches the set value, the first hydraulic cylinder locks the extension length.

[0009] Furthermore, a connecting plate sliding sleeve is fixed on the second grating ruler, and the connecting plate and the connecting plate sliding sleeve are installed in a sliding manner; the connecting plate sliding sleeve can make the sliding of the connecting plate smoother and at the same time, deformation of the connecting plate during sliding can be avoided.

[0010] Furthermore, a compensation detection unit is provided inside the adjustment groove; the compensation displacement detection unit can detect the up and down displacement of the force-bearing plate in real time.

[0011] Furthermore, the compensation in place detection unit includes a non-contact displacement detector or a contact displacement detector fixed on the inner side of the adjustment groove; the non-contact displacement detector adopts a laser displacement detector, an ultrasonic displacement detector or an infrared displacement detector, and the contact displacement detector adopts an electronic vernier caliper or a grating ruler.

[0012] Furthermore, guide seats are fixed at both ends of the inner side of the adjustment groove, and guide rods are slidably arranged on the guide seats, and the guide rods are fixed to the bottom surface of the force-bearing plate; the guide seats and the guide rods are used to limit the horizontal direction of the force-bearing plate, and when the force-bearing plate is lifted or lowered, the guide rods and the guide seats cooperate to achieve smooth lifting of the force-bearing plate.

[0013] Compared with the prior art, the automatic correction and alignment device for steel pipe welding of the present invention, before welding the two steel pipes to be welded, respectively places the welding ends of the two steel pipes on the first pipe slot seat and the second pipe slot seat; and uses the correction detection response unit on the first pipe slot seat to detect the spatial position of one steel pipe, and then calibrates the spatial position of the other steel pipe according to the correction detection response unit on the second pipe slot seat, and then detects the drop between the two steel pipes through the compensation detection unit, and controls the compensation unit to compensate for the drop, so as to realize automatic correction and alignment of the two steel pipes; when correcting and aligning, it is only necessary to place the steel pipes on the first pipe slot seat and the second pipe slot seat, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of the automatic correction and alignment device for steel pipe welding of the present invention without installing the second pipe groove seat.

[0015] Figure 2 For the present invention Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0016] Figure 3 It is a schematic diagram of the compensation unit structure of the present invention.

[0017] Figure 4 It is a schematic diagram of the installation structure of the compensation detection unit and the first pipe slot seat of the present invention.

[0018] Figure 5 It is a schematic diagram of the overall structure of the compensation detection unit of the present invention.

[0019] Figure 6 It is a schematic diagram of the overall structure of the automatic correction and alignment device for steel pipe welding of the present invention.

[0020] Figure 7 It is a schematic diagram of the installation structure of the automatic correction and alignment device for steel pipe welding and the steel pipe to be welded of the present invention.

[0021] Figure 8 It is a schematic diagram of the overall structure of the lever fulcrum unit of the present invention.

[0022] Fig. 9 It is a schematic diagram of the overall structure of the pressure monitoring unit of the present invention.

[0023] Fig.10 It is a schematic diagram of the spatial coordinates of the steel pipe to be welded and the first pipe groove seat of the present invention.

[0024] Fig.11 It is a schematic diagram of the inclination angle state of the steel pipe to be welded and the bottom surface of the first pipe groove seat of the present invention.

[0025] Fig.12 It is a schematic diagram of the inclination angle state of the steel pipe to be welded and the side surface of the first pipe groove seat of the present invention.

[0026] Fig.13 It is a schematic diagram of the position state between two steel pipes to be welded according to the present invention.

[0027] Figure numerals: 1, base, 2, first tube groove seat, 3, slide plate, 4, slider, 5, crank, 6, first grating ruler, 7, protrusion, 8, force plate, 9, ramp, 10, slope top block, 11, screw rod, 12, bevel gear commutator, 13, drive shaft, 14, transmission gear plate, 15, compensation motor, 16, drive gear plate, 17, second tube groove seat, 18, slide column, 19, through groove, 20, seat plate, 21, guide rod, 22, top pressure block, 23, first hydraulic cylinder, 24, second grating ruler, 25. Pressure monitoring unit, 26. Connecting plate, 27. Frame seat, 28. Second hydraulic cylinder, 29. Pressing frame, 30. Pressing wheel, 31. Steel pipe to be welded, 32. Lifting platform, 33. Roller seat, 34. Side roller body, 35. Middle roller body, 36. First disc seat, 37. Second disc seat, 38. Limiting screw, 39. Pressure transmitter, 40. Limiting nut, 41. Connecting plate sleeve, 42. Compensation detection unit, 43. Guide seat, 44. Guide rod, S1. First steel pipe, S2. Second steel pipe. DETAILED DESCRIPTION

[0028] Example: like Figures 1 to 9 As shown, the steel pipe welding automatic correction and alignment device of the present invention comprises: Controller for whole machine control; A base 1, wherein a first tube slot seat 2 is fixed to the top of the rear side of the base 1; a middle slide slot and a side slot are respectively provided at the middle of the front side and the two outer sides of the first tube slot seat 2 of the base 1; and adjustment slots are provided at both sides of the middle slide slot on the top surface of the base 1; The sliding seat comprises a sliding plate 3 slidably arranged inside the middle sliding groove, and a sliding block 4 slidably arranged above the side groove; a hollow groove is provided in the middle of the sliding plate 3; sliding holes are provided at both ends of the sliding plate 3 and the sliding block 4; a crank 5 is screwed on the outside of the sliding block 4 and is tightly pressed against the base 1; A compensation detection unit, the compensation detection unit comprises a first grating ruler 6 fixed below the slider 4, a detection head is slidably arranged above the first grating ruler 6, and a protrusion 7 that fits the detection head is integrally formed at the bottom of the slider 4; The compensation unit comprises a force-bearing plate 8 movably engaged with the inner side of the adjustment groove, a ramp platform 9 with an isosceles triangle structure is integrally formed in the middle of the bottom surface of the force-bearing plate 8, and the adjustment groove is respectively fitted with ramp top blocks 10 on both sides of the ramp platform 9; two of the ramp top blocks 10 are screwed with screw rods 11, both ends of the screw rods 11 are screwed to bearings, one end of the screw rod 11 passes through the bearing and is connected to a bevel gear commutator 12; the other ends of the two bevel gear commutators 12 are fixed to a drive shaft 13, a transmission gear disc 14 is fixed in the middle of the drive shaft 13, and the transmission gear disc 14 is meshed with a drive gear disc 16 on the output shaft of a compensation motor 15; A second pipe groove seat 17; a sliding column 18 is fixed to the bottom of the second pipe groove seat 17, and the sliding column 18 is movably engaged with the sliding hole; A correction detection response unit, the correction detection response unit includes two through slots 19 opened at the bottom and side of the first tube slot seat 2 and the second tube slot seat 17; the first tube slot seat 2 and the second tube slot seat 17 are fixed with a seat plate 20 outside the through slot 19, and a plurality of guide rods 21 are slidably arranged on the seat plate 20, and a top pressure block 22 is fixed at the front end of the guide rod 21; a first hydraulic cylinder 23 and a second grating ruler 24 are fixed on the seat plate 20, and the telescopic end of the first hydraulic cylinder 23 is fixed to the top pressure block 22 through a pressure monitoring unit 25; a connecting plate 26 is fixed between the detection head of the second grating ruler 24 and the top pressure block 22; the correction detection response unit at the bottom passes through the hollow slot; The tube pressing unit is slidably disposed on the first tube slot seat 2 and the second tube slot seat 17 .

[0029] During operation, the welding ends of the two steel pipes 31 to be welded are placed on the first pipe slot seat 2 and the second pipe slot seat 17 respectively; the welding ends of the steel pipes 31 to be welded protrude from the outside of the first pipe slot seat 2 and the second pipe slot seat 17; then, the pipe pressing unit is controlled to press and limit the steel pipes 31 to be welded on the first pipe slot seat 2, and then, the correction detection response unit on the first pipe slot seat 2 detects the steel pipes 31 to be welded. During the detection, the first hydraulic cylinder 23 pushes the top pressure block 22 to move, so that the top pressure block 22 presses the side and bottom surfaces of the outer surface of the steel pipes 31 to be welded; when the top pressure block 22 presses the steel pipes 31 to be welded, when the pressure monitoring unit 25 detects the set pressure value, the first hydraulic cylinder 23 stops moving, and at the same time, the connecting plate 26 drives the detection head of the second grating ruler 24 to move synchronously. At this time, the current displacement value is obtained through the second grating ruler 24; The inclination angle between the steel pipe 31 to be welded and the first pipe slot seat 2 is calculated according to the current displacement value; the correction detection response unit on the second pipe slot seat 17 synchronously responds to the alignment action according to the detected inclination angle, specifically: the correction detection response unit of the second pipe slot seat 17 is actuated to calculate the extension length of the first hydraulic cylinder 23 of the second pipe slot seat 17 according to the inclination angle detected by the correction detection response unit on the first pipe slot seat 2, and to determine whether the calculated extension length is reached in real time according to the second grating ruler 24. After reaching the extension length, the first hydraulic cylinder 23 locks the position of the top pressure block 22; then, the pipe pressing unit cooperates with the second pipe slot seat 17 to lock the position of the steel pipe 31 to be welded. When the position is locked, the second grating ruler 24 is used to monitor in real time whether a position offset occurs. When a position offset occurs, the first hydraulic cylinder 23 is used to correct it in real time; Next, a compensation detection is performed through the compensation detection unit. During the detection, the current position of the detection head of the first grating ruler 6 is set as the initial position. Then, the second tube slot seat 17 is pushed to move, so that the sliding seat at the bottom of the second tube slot seat 17 slides until the welding ends of the two steel pipes 31 to be welded are butted. Then, the position of the sliding seat is locked by shaking the handle 5. After the adjustment is completed, the displacement difference between the current position and the initial position is detected by the detection head of the first grating ruler 6, and the height compensation value is calculated according to the displacement difference. Next, the compensation unit operates, the compensation motor 15 operates, the compensation motor 15 drives the drive shaft 13 to rotate through the driving gear plate 16 and the transmission gear plate 14, the drive shaft 13 drives the bevel gear commutators 12 at both ends to operate synchronously, and the bevel gear commutator 12 drives the screw rod 11 to operate synchronously, so that the two slope top blocks 10 are close to or away from each other, thereby driving the slope platform 9 to move up or down; the lifting height of the force plate 8 is the calculated height compensation value; thereby automatically completing the correction and alignment of the two steel pipes 31 to be welded; waiting for welding.

[0030] The pipe pressing unit includes a frame seat body 27 movably engaged with the first pipe groove seat 2 and the second pipe groove seat 17, and two groups of second hydraulic cylinders 28 are fixed to the top surface of the frame seat body 27; a pressing frame 29 is arranged on the inner side of the frame seat body 27, and pressing wheels 30 are rotatably arranged on both sides of the bottom of the pressing frame 29; the pressing frame 29 is fixed to the piston rod of the second hydraulic cylinder 28; the pressing wheels 30 are pressed on both sides of the upper part of the steel pipe 31 to be welded; the second hydraulic cylinder 28 can drive the pressing frame 29 downward or upward, so that the pressing wheels 30 on the pressing frame 29 can press or detach from the steel pipe 31 to be welded.

[0031] It also includes a lever fulcrum unit, which includes a lifting platform 32, and a roller seat 33 is fixed at the lifting end of the lifting platform 32. The roller seat 33 is provided with side roller bodies 34 arranged in a V-shaped rolling manner, and an intermediate roller body 35 is rolled between the side roller bodies 34; the steel pipe 31 to be welded is mounted on the lever fulcrum unit, and the steel pipe 31 to be welded uses the lever fulcrum unit as a fulcrum. The steel pipe 31 to be welded can swing up and down and horizontally along the lever fulcrum unit; thereby facilitating the correction detection response unit of the second pipe groove seat 17 to adjust and respond to the welding end of the steel pipe 31 to be welded, and the intermediate roller body 35 can facilitate the movement and guidance of the steel pipe 31 to be welded on the second pipe groove seat 17, so that the steel pipe 31 to be welded on the second pipe groove seat 17 can smoothly approach or move away from the first pipe groove seat 2.

[0032] The pressure monitoring unit 25 includes a first disc seat 36 and a second disc seat 37 fixed to the outside of the top pressure block 22. A plurality of limit screws 38 are fixed at intervals on the first disc seat 36. A pressure transmitter 39 is fixed at the center of the first disc seat 36. The second disc seat 37 is slidably installed on the limit screw 38 and is screwed with a limit nut 40. A flange fixed to the telescopic end of the first hydraulic cylinder 23 is arranged on the outside of the second disc seat 37. A detection gap exceeding the thickness of the pressure transmitter 39 is arranged between the first disc seat 36 and the second disc seat 37. Working When the first hydraulic cylinder 23 does not push the second disc seat 37 forward, at this time, due to the detection gap between the first disc seat 36 and the second disc seat 37, at this time, the pressure transmitter 39 has no pressure output, and when the second disc seat 37 pushes the first disc seat 36 forward, the first disc seat 36 pushes the top pressure block 22 to press against the steel pipe to be welded 31, and when the top pressure block 22 is limited by the steel pipe to be welded 31; and the first hydraulic cylinder 23 continues to apply pressure, at this time, the pressure transmitter 39 detects the pressure value in real time, until the pressure value reaches the set value, the first hydraulic cylinder 23 locks the extension length.

[0033] A connecting plate sliding sleeve 41 is fixed on the second grating ruler 24, and the connecting plate 26 is installed in a sliding manner. The connecting plate sliding sleeve 41 can make the connecting plate 26 slide more smoothly and avoid deformation of the connecting plate 26 during sliding.

[0034] A compensation detection unit 42 is provided inside the adjustment groove; the compensation displacement detection unit can detect the up and down displacement of the force-bearing plate 8 in real time.

[0035] The compensation in place detection unit 42 includes a non-contact displacement detector or a contact displacement detector fixed to the inner side of the adjustment groove; the non-contact displacement detector adopts a laser displacement detector, an ultrasonic displacement detector or an infrared displacement detector, and the contact displacement detector adopts an electronic vernier caliper or a grating ruler.

[0036] Guide seats 43 are fixed at both ends of the inner side of the adjustment groove, and guide rods 44 are slidably arranged on the guide seats 43, and the guide rods 44 are fixed to the bottom surface of the force-bearing plate 8; the guide seats 43 and the guide rods 44 are used to limit the horizontal direction of the force-bearing plate 8, and when the force-bearing plate 8 is lifted or lowered, the guide rods 44 and the guide seats 43 cooperate to achieve smooth lifting of the force-bearing plate 8.

[0037] like Figures 10 to 13 As shown, the steel pipe welding automatic correction and alignment device of the present invention has the following working process: The welded steel pipe 31 to be welded is placed in the first pipe slot seat 2 and the second pipe slot seat 17 respectively; the steel pipe 31 to be welded includes the first steel pipe S1 and the second steel pipe S2; and the welding ends of the first steel pipe S1 and the second steel pipe S2 are made to protrude outside the first pipe slot seat 2 and the second pipe slot seat 17; then, the pipe pressing unit is controlled to press and limit the side surface of the steel pipe on the first pipe slot seat 2, and the top pressing block 22 of the pipe pressing unit is controlled to press the C point and the D point of the first steel pipe S1 respectively. Since the distance between the C point and the D point (the distance between the two top pressing blocks 22) is a fixed value, it is used as a right angle side length; the difference L2 between the C point and the D point is calculated to obtain the length of the other right angle side. After obtaining the two right angle sides, the Pythagorean theorem is used to obtain the hypotenuse of the right triangle, and then the sine theorem or the cosine theorem is used to calculate the inclination angle β2 between the first steel pipe S1 and the side surface of the first pipe slot seat 2; then, the pressure is controlled The pipe unit tightens and limits the bottom surface of the steel pipe on the first pipe slot seat 2, and controls the pressing block 22 of the pressing unit to tighten the first steel pipe S1 point A and point B respectively. Since the distance between point A and point B (the distance between the two pressing blocks 22) is a fixed value, it is used as the length of a right-angled side; the difference L1 between point A and point B is used to calculate the length of another right-angled side. After the two right-angled sides are obtained, the hypotenuse of the right triangle is obtained by using the Pythagorean theorem, and then the inclination angle β1 between the first steel pipe S1 and the bottom surface of the first pipe slot seat 2 is calculated by using the sine theorem or the cosine theorem; then, the correction detection response unit on the second pipe slot seat 17 is activated, so that the inclination angle between the bottom surface of the steel pipe on the second pipe slot seat 17 and the bottom surface of the second pipe slot seat 17 reaches β1; the inclination angle between the side surface of the steel pipe on the second pipe slot seat 17 and the side surface of the second pipe slot seat 17 reaches β2, so that the three-dimensional inclination angles of the two steel pipes are consistent; Next, compensation detection is performed through the compensation detection unit. The compensation process is as follows: during detection, the current position of the detection head of the first grating ruler 6 is set as the initial position. Then, the second tube slot seat 17 is pushed to move until the welding ends of the first steel tube S1 and the second steel tube S2 are butted. The position of the sliding seat is locked by shaking the handle 5. After the adjustment is completed, the current position data detected by the detection head of the first grating ruler 6 is subtracted from the initial position data to obtain the displacement difference L3. Since the inclination angle between the bottom surface of the steel tube on the second tube slot seat 17 and the bottom surface of the second tube slot seat 17 is β1 ; Since the right angle and one acute angle (inclination angle β1) of the right triangle are known, the other acute angle can be calculated, and the right angle side on the opposite side of the inclination angle β1 can be calculated according to the sine theorem. The height compensation value L4 is calculated for the right angle side, and then the compensation unit responds to the height according to the height compensation value L4; when responding, the second tube slot seat 17 is driven upward by the compensation unit, and the upward height is the height compensation value L4; when ascending, the real-time position detection feedback is performed through the compensation in place detection unit 42, until the set height is reached, and the compensation motor 15 stops.

[0038] The above embodiments are only preferred implementations of the present invention, so any equivalent changes or modifications made according to the structures, features and principles described in the scope of application of the present invention are included in the scope of application of the present invention.

Claims

1. An automatic correction and alignment device for steel pipe welding, characterized in that: include: Controller for whole machine control; A base, wherein a first tube slot seat is fixed on the top of the rear side of the base; a middle slide slot and a side slot are respectively provided on the middle part of the front side and two outer sides of the first tube slot seat; and adjustment slots are provided on both sides of the middle slide slot on the top surface of the base; The sliding seat comprises a sliding plate slidably arranged inside the middle sliding groove, and a sliding block slidably arranged above the side groove; a hollow groove is provided in the middle of the sliding plate; sliding holes are provided at both ends of the sliding plate and the sliding block; a crank handle is screwed on the outside of the sliding block and is tightly pressed against the base; A compensation detection unit, the compensation detection unit comprising a first grating ruler fixed below the slider, a detection head slidably arranged above the first grating ruler, and a protrusion integrally formed at the bottom of the slider to fit with the detection head; A compensation unit, the compensation unit comprises a force-bearing plate movably engaged with the inner side of the adjustment groove, a ramp platform with an isosceles triangle structure is integrally formed in the middle of the bottom surface of the force-bearing plate, and the adjustment groove is respectively fitted with ramp top blocks on both sides of the ramp platform; two of the ramp top blocks are screwed with screw rods, both ends of the screw rods are screwed to bearings, one end of the screw rod passes through the bearing and is connected to a bevel gear commutator; the other ends of the two bevel gear commutators are fixed to the drive shaft, a transmission gear disc is fixed in the middle of the drive shaft, and the transmission gear disc is meshed with the drive gear disc on the output shaft of the compensation motor; A second pipe slot seat; a sliding column is fixed to the bottom of the second pipe slot seat, and the sliding column is movably engaged with the sliding hole; A correction detection response unit, the correction detection response unit comprises two through slots opened at the bottom and side of the first tube slot seat and the second tube slot seat; the first tube slot seat and the second tube slot seat are fixed with a seat plate outside the through slot, a plurality of guide rods are slidably arranged on the seat plate, and a top pressure block is fixed at the front end of the guide rod; a first hydraulic cylinder and a second grating ruler are fixed on the seat plate, and the telescopic end of the first hydraulic cylinder is fixed to the top pressure block through a pressure monitoring unit; a connecting plate is fixed between the detection head of the second grating ruler and the top pressure block; The tube pressing unit is slidably arranged on the first tube slot seat and the second tube slot seat.

2. The automatic correction and alignment device for steel pipe welding according to claim 1 is characterized in that: The pipe pressing unit includes a frame seat body movably engaged with the first pipe groove seat and the second pipe groove seat, two groups of second hydraulic cylinders are fixed to the top surface of the frame seat body; a pressing frame is arranged inside the frame seat body, and pressing wheels are rotatably arranged on both sides of the bottom of the pressing frame; the pressing frame is fixed to the piston rod of the second hydraulic cylinder; the pressing wheels are pressed with both sides of the upper part of the steel pipe to be welded.

3. The automatic correction and alignment device for steel pipe welding according to claim 1 is characterized in that: It also includes a lever fulcrum unit, which includes a lifting platform, a roller seat is fixed to the lifting end of the lifting platform, side roller bodies arranged in a V-shaped rolling manner are arranged on the roller seat, and intermediate roller bodies are arranged between the side roller bodies for rolling.

4. The automatic correction and alignment device for steel pipe welding according to claim 1 is characterized in that: The pressure monitoring unit includes a first disc seat and a second disc seat fixed to the outside of the top pressure block, a plurality of limit screws are fixed on the first disc seat at intervals, a pressure transmitter is fixed at the center of the first disc seat, the second disc seat is slidably installed on the limit screws and is screwed with a limit nut, a flange plate fixed to the telescopic end of the first hydraulic cylinder is arranged on the outside of the second disc seat; a detection gap exceeding the thickness of the pressure transmitter is arranged between the first disc seat and the second disc seat.

5. The automatic correction and alignment device for steel pipe welding according to claim 1 is characterized in that: A connecting plate sliding sleeve is fixed on the second grating ruler; the connecting plate and the connecting plate sliding sleeve are installed in a sliding cooperation manner.

6. The automatic correction and alignment device for steel pipe welding according to claim 1 is characterized in that: A compensation detection unit is arranged inside the adjustment groove.

7. The automatic correction and alignment device for steel pipe welding according to claim 6 is characterized in that: The compensation in place detection unit includes a non-contact displacement detector or a contact displacement detector fixed inside the adjustment groove.

8. The automatic correction and alignment device for steel pipe welding according to claim 1 is characterized in that: Guide seats are fixed at both ends of the inner side of the adjustment groove, guide rods are slidably arranged on the guide seats, and the guide rods are fixed to the bottom surface of the force-bearing plate.

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