CN116399953B - Detection device and detection method for steel pipe welding seam - Google Patents
Detection device and detection method for steel pipe welding seam Download PDFInfo
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- CN116399953B CN116399953B CN202310680215.1A CN202310680215A CN116399953B CN 116399953 B CN116399953 B CN 116399953B CN 202310680215 A CN202310680215 A CN 202310680215A CN 116399953 B CN116399953 B CN 116399953B
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- 238000001514 detection method Methods 0.000 title claims abstract description 143
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 102
- 239000010959 steel Substances 0.000 title claims abstract description 102
- 238000003466 welding Methods 0.000 title claims description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 139
- 230000000670 limiting effect Effects 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 12
- 210000001503 joint Anatomy 0.000 claims description 10
- 238000009499 grossing Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 8
- 239000012535 impurity Substances 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 230000009471 action Effects 0.000 description 13
- 230000007547 defect Effects 0.000 description 10
- 230000002349 favourable effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 239000007822 coupling agent Substances 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/225—Supports, positioning or alignment in moving situation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention relates to the technical field of weld joint detection, in particular to a detection device and a detection method for a steel pipe weld joint, wherein the detection device comprises a detection table, two clamping mechanisms are symmetrically fixed on the top surface of the detection table, and the clamping mechanisms are used for clamping and positioning square steel pipes; the top surface of the detection table is fixedly provided with a support frame, the outer wall of the support frame is fixedly provided with two sliding rails, a sliding block is connected between the two sliding rails in a sliding way, the sliding block is provided with a linear driving mechanism, and the linear driving mechanism is used for driving the sliding block to move along the sliding rails; the coating mechanism is positioned in front of the ultrasonic detection head, so that the couplant is coated on the surface of the square steel pipe through the coating mechanism before detection, and the ultrasonic detection head can immediately detect after the couplant is coated, thereby being beneficial to avoiding the situations that the couplant is exposed in the air for a long time and is not detected in time, and dust and other impurities are sticky and the couplant is dry.
Description
Technical Field
The invention relates to the field of weld joint detection, in particular to a detection device and a detection method for a steel pipe weld joint.
Background
Ultrasonic flaw detection is a nondestructive flaw detection method for detecting internal defects of a weld joint by means of an ultrasonic flaw detector.
The invention patent of the related weld detection of part among the prior art, the chinese patent of application number 201910667664.6 discloses a steel pipe weld ultrasonic phased array detection device, including support frame and ultrasonic flaw detector, the support frame includes a first support frame and two second support frames, set up servo motor and digital signal processor on the first support frame, the second support frame includes two T type framves and perpendicular rigid coupling horizontal pole between T type framves, rigid coupling V type frame on the T type frame, servo motor's output shaft and spin chuck's center rigid coupling, spin chuck and steel pipe detachable connection.
After the welding of the steel pipe is finished, the defect of the welding line is detected through an ultrasonic detector, and before detection, the couplant is required to be smeared on the surface of the steel pipe, but the existing working mode is that after the couplant is smeared on the welding line part in advance, the steel pipe is transported to a detection table, the defect of the welding line is detected through the ultrasonic detector, after the couplant is smeared in advance, if detection is not timely carried out, the couplant is easy to dry in the transportation process, and impurities such as dust are easy to adhere on the couplant, so that the later detection effect is affected.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a detection device and a detection method for a steel pipe welding seam.
In order to achieve the above purpose, the invention adopts the following technical scheme: the detection device for the welding seam of the steel pipe comprises a detection table, wherein two clamping mechanisms are symmetrically fixed on the top surface of the detection table and used for clamping and positioning the square steel pipe;
the top surface of the detection table is fixedly provided with a support frame, the outer wall of the support frame is fixedly provided with two sliding rails, a sliding block is connected between the two sliding rails in a sliding way, the sliding block is provided with a linear driving mechanism, and the linear driving mechanism is used for driving the sliding block to move along the sliding rails;
a first electric cylinder is fixed on the top surface of the sliding block, the movable end of the first electric cylinder penetrates through the sliding block and extends out, a connecting plate is fixed on the sliding block, and a smearing mechanism for smearing the couplant is arranged on the bottom surface of the connecting plate;
an ultrasonic detection head for detecting welding seams on the surface of the square steel pipe is fixed on the bottom surface of the connecting plate;
when the linear driving mechanism drives the sliding block to move leftwards, the smearing mechanism is used for smearing the couplant on the surface of the square steel pipe, and when the ultrasonic detection head moves rightwards for resetting, the smearing mechanism stops smearing the couplant; when the welding device is in operation, after the welding of the steel pipe is completed, the defect of the welding line is required to be detected through the ultrasonic detector, and before the welding is completed, the couplant is required to be smeared on the surface of the steel pipe, but the existing working mode is that after the couplant is smeared at the welding line part in advance, the steel pipe is transported to a detection table, the defect of the welding line is detected through the ultrasonic detector, after the couplant is smeared in advance, if the detection is not timely carried out, the couplant is easy to dry in the transportation process, and impurities such as dust are easy to adhere to the couplant, and the later detection effect is affected, the problem can be solved according to the embodiment of the invention, the specific working mode is as follows, the linear driving mechanism comprises a first motor, the first motor is fixed on the side wall of the support frame, the output shaft of the first motor penetrates the support frame and extends out, then a screw is fixed, the screw is connected with the sliding block, and the end part of the screw is rotationally connected to the support frame;
when the ultrasonic coupling agent detection device is used, firstly, the square steel pipe is clamped and positioned through the clamping mechanism, so that the top surface of the square steel pipe is horizontal, then, the heights of the smearing mechanism and the ultrasonic detection head are adjusted through the first electric cylinder, so that the smearing mechanism and the ultrasonic detection head are in contact with the surface of the square steel pipe, and the output shaft of the first electric motor drives the screw rod to rotate through starting the first electric motor, so that the sliding block moves leftwards along the sliding rail, the ultrasonic detection head and the smearing mechanism are driven to synchronously move through the sliding block, and the smearing mechanism is positioned in front of the ultrasonic detection head, so that before detection, the couplant is smeared on the surface of the square steel pipe through the smearing mechanism, after the couplant is smeared, the ultrasonic detection head can immediately detect, and further, the couplant is prevented from being exposed to the air for a long time, and the situation that dust and other impurities are sticky and the couplant are dry is avoided;
when the detection is finished, the smearing mechanism can stop smearing the couplant in the resetting process of the ultrasonic detection head, so that the condition that the couplant is wasted due to secondary smearing is avoided.
Preferably, the clamping mechanism comprises two positioning rings, the two positioning rings are fixed on the top surface of the detection table through brackets, the outer sides of the two positioning rings are connected with a rotating ring in a common rotating mode, a plurality of second electric cylinders are fixed on the surface of the rotating ring, movable ends of the second electric cylinders penetrate through the rotating ring and then are fixed with positioning plates, the positioning plates are in contact with the surface of a square steel tube, a first gear is fixedly sleeved on the outer side of the rotating ring, one side of the first gear is meshed with a second gear, one side of the second gear is provided with a second motor, an output shaft of the second motor is fixed with the second gear, and the second motor is fixed on the detection table; during operation, when installing square steel pipe, insert square steel pipe inside the holding ring, through starting the second electric jar, the expansion end of second electric jar promotes the surface contact of locating plate and square steel pipe, and carry out centre gripping location to square steel pipe, after the location is accomplished, through starting the second motor, the second motor drives the second gear and rotates, the second gear drives first gear and rotates, drive the rotation ring through first gear and rotate, thereby drive second electric jar through the rotation ring, the locating plate, square steel pipe is whole rotates, adjust square steel pipe's position, make square steel pipe's top surface keep the horizontality, and then be convenient for detect.
Preferably, the smearing mechanism comprises a U-shaped frame and a liquid storage tank, the U-shaped frame is connected with the connecting plate through a connecting mechanism, fixing plates are fixed on two side walls of the U-shaped frame, a storage tank is fixed between the two fixing plates, the liquid storage tank is fixed on the top surface of the supporting frame, communicating pipes are fixedly communicated on the side walls of the liquid storage tank, the end parts of the communicating pipes penetrate through the U-shaped frame and the fixing plates and then are fixedly communicated with the storage tank, a plurality of discharge pipes are fixedly communicated on the side walls of the storage tank, one-way valves are fixed at the end parts of the discharge pipes, piston plates are inserted in the storage tank, a plurality of first springs are fixed between the bottom surface of the piston plates and the inner bottom surface of the storage tank, pushing plates penetrate through the bottom of the storage tank and extend out, arc-shaped surfaces are arranged at the bottom ends of the pushing plates, rotating rollers are sleeved on the outer sides of the two fixing plates together, the rotating rollers and the two fixing plates are fixedly sleeved with rotating rollers through rubber rings, and the rotating rollers are fixedly sleeved on the two ends of the rotating rollers; during operation, the couplant is stored through the liquid storage tank, the couplant can flow into the storage tank from the communicating pipe, when the linear driving mechanism drives the sliding block and the connecting plate to move, the linear driving mechanism can drive the smearing mechanism to integrally move under the connection action of the connecting mechanism, so that the rubber ring and the rotating roller roll on the surface of the square steel pipe, the friction force between the two ends of the rotating roller and the square steel pipe is increased by arranging the rubber ring, and a gap is formed between the middle part of the rotating roller and the square steel pipe, so that a relief space is provided for the couplant smearing;
after the rotating roller rotates, the rotating roller drives the internal protruding strip to move, when the protruding strip contacts with the arc-shaped surface at the bottom of the pushing plate, the pushing plate is pushed to move upwards by the protruding strip, the piston plate is driven to move upwards by the pushing plate, so that the couplant in the storage box is extruded from the one-way valve of the discharge pipe, after the couplant is extruded, the couplant flows out of the liquid outlet groove on the surface of the rotating roller onto the surface of the square steel pipe, the extrusion function is further completed, and after the protruding strip is separated from the pushing plate, the piston plate moves downwards to reset under the pulling action of the first spring, so that a new couplant can enter the storage box;
and because the live-rollers are rotationally connected with the fixed disk through the one-way bearing, the live-rollers can only rotate in one direction, and when the linear driving mechanism drives the smearing mechanism to wholly reset, the live-rollers stop rotating under the limiting action of the one-way bearing, so that the situation that the couplant is wasted due to secondary smearing is avoided.
Preferably, the connecting mechanism comprises two abdicating grooves, the two abdicating grooves are formed in the surface of the connecting plate, connecting rods are inserted into the two abdicating grooves, limiting rings are fixed on the surfaces of the connecting rods, the two limiting rings are respectively arranged on the upper side and the lower side of the connecting plate, a one-way limiting mechanism is arranged above the connecting rods, and the one-way limiting mechanism is used for enabling the connecting rods to move unidirectionally along the abdicating grooves; during operation, when the connecting plate moves to the left side, promote the connecting rod through the groove of stepping down and move to the left side, detect the welding seam defect when the ultrasonic detection head, when the accurate position of fine setting position assurance welding seam needs, need to move the fine setting position to the right through the drive of straight line actuating mechanism drive ultrasonic detection head, at this moment, drive the connecting plate through straight line actuating mechanism and move to the right, step down the connecting rod through setting up the groove, and then avoid the connecting rod to move to the couplant top after finishing with the connecting plate right, when moving to the left side again, the secondary is smeared, the condition that leads to the couplant extravagant takes place, and limit the connecting rod to move to the right through setting up unidirectional limiting mechanism, the stability of connecting rod has further been guaranteed.
Preferably, the unidirectional limiting mechanism comprises a sliding rod, two ends of the sliding rod are respectively and slidably connected to two sliding rails, two sleeves are symmetrically and slidably inserted on the surface of the sliding rod, limiting discs are fixedly sleeved on the top ends of the two sleeves, the two sleeves are respectively sleeved on the outer sides of the two connecting rods, a third gear is rotationally connected to the outer sides of the sleeves through unidirectional bearings, a rack is fixed on the outer wall of the sliding rail, the rack is meshed with the corresponding third gear, and a sliding mechanism is arranged between the sleeve and the connecting rods and is used for enabling the sleeves to vertically slide on the connecting rods; during operation, when the inner wall in the groove of stepping down promotes the connecting rod and removes to the left side, the connecting rod drives sleeve, third gear removes to the left side, third gear rotates on the rack, when the position of needs fine setting ultrasonic detection head, under slide mechanism effect, make the sleeve only can follow the connecting rod vertical slip, because be connected through one-way bearing between third gear and the sleeve, thereby can restrict the reverse rotation of third gear, thereby make through third gear and rack cooperation restriction sleeve remove to the right, and then avoid when fine setting ultrasonic detection head position, the connecting rod takes place to the condition that removes to the right, and then be favorable to avoiding the secondary to smear couplant, lead to the extravagant condition of couplant to take place.
Preferably, the sliding mechanism comprises a sliding groove and a sliding pin, the sliding groove is formed in the outer wall of the sleeve, the sliding pin is inserted into the sliding groove, and the end part of the sliding pin is fixed on the side wall of the connecting rod; when the working, when the first electric cylinder promotes the connecting plate and reciprocates and adjusts the height of smearing mechanism and ultrasonic detection head, the slip round pin can slide in the sliding tray to make the whole length of sleeve and connecting rod adjustable, and through setting up sliding tray and slip round pin, enable the sleeve and can only vertically slide.
Preferably, the sleeve is fixedly sleeved with a butt joint block at the outer side, a pushing block is fixed on the top surface of the connecting plate, and guide surfaces are formed on opposite sides of the pushing block and the butt joint block; when the connecting plate moves rightwards to reset, the pushing block and the butt joint block are gradually close, and under the pushing action of the pushing block and the guiding action of the guiding surface, the butt joint block can be pushed upwards, so that the pushing block drives the sleeve to move upwards integrally, the third gear is separated from the rack, the limit of the third gear and the rack on the sleeve and the connecting rod is eliminated, and the influence of the third gear and the rack on the reset of the smearing mechanism is avoided;
when the next detection is carried out after the reset of the smearing mechanism is completed, the butt joint block can slide downwards to be separated from the sleeve under the action of gravity and the guiding action of the guiding surface in the process that the linear driving mechanism pushes the connecting plate to move leftwards, so that the third gear is meshed with the rack again.
Preferably, connecting strips are fixed on the side walls of the two fixing plates, a smoothing plate is jointly fixed between the two connecting strips, and a gap is reserved between the smoothing plate and the surface of the square steel tube; during operation, through setting up smooth out with fingers dull and stereotyped, promote smooth out with fingers to scribbling accumulational couplant, and then be favorable to guaranteeing square steel pipe surface couplant and scribble the homogeneity, and then be favorable to avoiding having couplant to scribble inhomogeneous condition emergence that causes the influence to the testing result.
Preferably, the side walls of the two connecting strips are respectively and rotatably connected with a roller, and the two rollers are respectively contacted with the surface of the square steel tube; during operation, because the rubber ring is flexible material, at the in-process of adjusting the height of connecting plate through the second electric jar, be difficult to guarantee to smooth out the plane and smooth out the clearance size between square steel pipe surface for smooth out the plane and maintain fixedly with square steel pipe surface's clearance through setting up the gyro wheel, and then be favorable to avoiding smooth out the plane and the square steel pipe surface distance is too near, leads to the couplant to paint thinner, leads to the fact the condition emergence of influence to the testing result.
A detection method for a detection device for a weld of a steel pipe, the detection method comprising the steps of:
step one, clamping and positioning the square steel pipe through a clamping mechanism to enable the top surface of the square steel pipe to be horizontal;
step two, the heights of the smearing mechanism and the ultrasonic detection head are adjusted through the first electric cylinder, so that the smearing mechanism and the ultrasonic detection head are contacted with the surface of the square steel pipe;
driving the sliding block to move leftwards along the sliding rail through the linear driving mechanism, driving the ultrasonic detection head and the smearing mechanism to synchronously move through the sliding block, smearing the couplant through the smearing mechanism, and immediately detecting through the ultrasonic detection head after smearing is finished;
and fourthly, after detection is completed, the ultrasonic detection head and the smearing mechanism are driven to reset through the linear driving mechanism, and the smearing mechanism stops smearing the couplant in the resetting process.
Compared with the prior art, the invention has the following beneficial effects:
1. the sliding block is driven by the linear driving mechanism to move leftwards along the sliding rail, the ultrasonic detection head is driven by the sliding block to synchronously move with the smearing mechanism, and the smearing mechanism is positioned in front of the ultrasonic detection head, so that before detection, the couplant is smeared on the surface of the square steel pipe through the smearing mechanism, after the couplant is smeared, the ultrasonic detection head can immediately detect, and further the couplant is prevented from being exposed in the air for a long time, and is not timely detected, so that dust and other impurities are sticky and the couplant are dry, and the detection result is affected.
2. Because the live-rollers are rotationally connected with the fixed disk through the one-way bearing, the live-rollers can only rotate in one direction, and when the linear driving mechanism drives the smearing mechanism to wholly reset, the live-rollers stop rotating under the limiting action of the one-way bearing, so that the situation that the couplant is wasted due to secondary smearing is avoided.
3. When the position of ultrasonic detection head needs fine setting, under slide mechanism effect for the sleeve can only follow the connecting rod and vertically slide, owing to be connected through one-way bearing between third gear and the sleeve, thereby can restrict the reverse rotation of third gear, thereby make through third gear and rack cooperation restriction sleeve right movement, and then avoid when fine setting ultrasonic detection head position, the connecting rod takes place to the condition that moves right, and then is favorable to avoiding the secondary to smear the couplant, leads to the extravagant condition of couplant to take place.
Drawings
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a schematic diagram of the whole structure of the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2 according to the present invention;
FIG. 4 is a schematic diagram of the whole structure of the second embodiment of the present invention;
FIG. 5 is a schematic view of a painting mechanism and a sliding rail according to the present invention;
FIG. 6 is an enlarged schematic view of the structure of FIG. 5B according to the present invention;
FIG. 7 is an enlarged schematic view of the structure of FIG. 5 according to the present invention;
FIG. 8 is a second schematic view of the painting mechanism and the sliding rail of the present invention;
FIG. 9 is an enlarged schematic view of the structure of FIG. 8 according to the present invention;
FIG. 10 is a schematic diagram of a cross-sectional structure of a rotating roller according to the present invention;
FIG. 11 is an enlarged schematic view of the structure of FIG. 10 according to the present invention;
fig. 12 is a schematic diagram showing a cross-sectional structure of a rotating roller according to the present invention.
In the figure: 1. a detection table; 2. square steel pipe; 3. a support frame; 4. a slide rail; 5. a sliding block; 6. a first electric cylinder; 7. a connecting plate; 8. a positioning ring; 9. a rotating ring; 10. a second electric cylinder; 11. a positioning plate; 12. a first gear; 13. a second gear; 14. a second motor; 15. a U-shaped frame; 16. a liquid storage tank; 17. a fixed plate; 18. a storage tank; 19. a communicating pipe; 20. a discharge pipe; 21. a one-way valve; 22. a piston plate; 23. a first spring; 24. a pushing plate; 25. a rotating roller; 26. a rubber ring; 27. a protruding strip; 28. a liquid outlet groove; 29. a relief groove; 30. a connecting rod; 31. a limiting ring; 32. a slide bar; 33. a sleeve; 34. a limiting disc; 35. a third gear; 36. a rack; 37. a sliding groove; 38. a sliding pin; 39. a butt joint block; 40. a pushing block; 41. a connecting strip; 42. smoothing out the flat plate; 43. a roller; 44. an ultrasonic detection head; 45. a first motor; 46. and (3) a screw.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
The detection device for the welding seam of the steel pipe comprises a detection table 1, wherein two clamping mechanisms are symmetrically fixed on the top surface of the detection table 1, and the clamping mechanisms are used for clamping and positioning the square steel pipe 2;
the top surface of the detection table 1 is fixedly provided with a support frame 3, the outer wall of the support frame 3 is fixedly provided with two slide rails 4, a sliding block 5 is connected between the two slide rails 4 in a sliding way, a linear driving mechanism is arranged on the sliding block 5, and the linear driving mechanism is used for driving the sliding block 5 to move along the slide rails 4;
a first electric cylinder 6 is fixed on the top surface of the sliding block 5, a connecting plate 7 is fixed after the movable end of the first electric cylinder 6 penetrates through the sliding block 5 and extends out, and a smearing mechanism for smearing the couplant is arranged on the bottom surface of the connecting plate 7;
an ultrasonic detection head 44 for detecting the welding line on the surface of the square steel pipe 2 is fixed on the bottom surface of the connecting plate 7;
when the linear driving mechanism drives the sliding block 5 to move leftwards, the smearing mechanism is used for smearing the couplant on the surface of the square steel pipe 2, and when the ultrasonic detection head 44 moves rightwards for resetting, the smearing mechanism stops smearing the couplant; when the welding device is in operation, after the welding of the steel pipe is completed, the defect of the welding line is required to be detected by an ultrasonic detector, and before the detection, the couplant is required to be smeared on the surface of the steel pipe, but the existing working mode is that after the couplant is smeared on the welding line part in advance, the steel pipe is transported to a detection table, the defect of the welding line is detected by the ultrasonic detector, after the couplant is smeared in advance, if the detection is not timely carried out, the couplant is easy to dry in the transportation process, and impurities such as dust are easy to adhere to the couplant, and the like, influence the later detection effect, the problem can be solved according to the embodiment of the invention, the specific working mode is as follows, the linear driving mechanism comprises a first motor 45, the first motor 45 is fixed on the side wall of the support frame 3, the output shaft of the first motor 45 penetrates the support frame 3 and extends out, then a screw 46 is fixed, the screw 46 is connected with the screw 46, and the end of the screw 46 is rotationally connected to the support frame 3;
when the ultrasonic detection device is used, firstly, the square steel tube 2 is clamped and positioned through the clamping mechanism, so that the top surface of the square steel tube 2 is horizontal, then, the heights of the smearing mechanism and the ultrasonic detection head 44 are adjusted through the first electric cylinder 6, so that the smearing mechanism and the ultrasonic detection head 44 are in contact with the surface of the square steel tube 2, and the output shaft of the first electric motor 45 drives the screw 46 to rotate through starting the first electric motor 45, so that the sliding block 5 moves leftwards along the sliding rail 4, the ultrasonic detection head 44 and the smearing mechanism are driven to synchronously move through the sliding block 5, and the smearing mechanism is positioned in front of the ultrasonic detection head 44, so that before detection, the couplant is smeared on the surface of the square steel tube 2 through the smearing mechanism, and after the couplant is smeared, the ultrasonic detection head 44 can immediately detect, so that long-term exposure of the couplant to air is avoided, and the phenomenon that dust and other impurities are sticky and the couplant are dry is caused, and the situation that the detection result is affected is generated;
when the detection is completed, the smearing mechanism can stop smearing the couplant in the resetting process of the ultrasonic detection head 44, so that the condition that the couplant is wasted due to secondary smearing is avoided.
As a further embodiment of the invention, the clamping mechanism comprises two positioning rings 8, the two positioning rings 8 are fixed on the top surface of the detection table 1 through brackets, the outer sides of the two positioning rings 8 are connected with a rotating ring 9 in a rotating way, a plurality of second electric cylinders 10 are fixed on the surface of the rotating ring 9, the movable ends of the second electric cylinders 10 penetrate through the rotating ring 9 and then are fixedly provided with positioning plates 11, the positioning plates 11 are contacted with the surface of the square steel tube 2, a first gear 12 is fixedly sleeved on the outer side of the rotating ring 9, one side of the first gear 12 is meshed with a second gear 13, one side of the second gear 13 is provided with a second motor 14, the output shaft of the second motor 14 is fixed with the second gear 13, and the second motor 14 is fixed on the detection table 1; during operation, when square steel pipe 2 is installed, square steel pipe 2 is inserted into locating ring 8, through start second electric jar 10, the expansion end of second electric jar 10 promotes locating plate 11 and square steel pipe 2's surface contact, and carry out centre gripping location to square steel pipe 2, after the location is accomplished, through start second motor 14, second motor 14 drives second gear 13 and rotates, second gear 13 drives first gear 12 and rotates, drive rotation ring 9 through first gear 12, thereby drive second electric jar 10 through rotation ring 9, locating plate 11, square steel pipe 2 is whole rotates, adjust square steel pipe 2's position, make square steel pipe 2's top surface keep the horizontality, and then be convenient for detect.
As a further embodiment of the invention, the smearing mechanism comprises a U-shaped frame 15 and a liquid storage tank 16, the U-shaped frame 15 is connected with the connecting plate 7 through a connecting mechanism, fixed discs 17 are fixed on two side walls of the U-shaped frame 15, a storage tank 18 is jointly fixed between the two fixed discs 17, the liquid storage tank 16 is fixed on the top surface of the supporting frame 3, a communicating pipe 19 is fixedly communicated with the side walls of the liquid storage tank 16, the end part of the communicating pipe 19 penetrates through the U-shaped frame 15 and the fixed discs 17 and then is fixedly communicated with the storage tank 18, a plurality of discharge pipes 20 are fixedly communicated with the side walls of the storage tank 18, one-way valves 21 are fixed at the end parts of the discharge pipes 20, piston plates 22 are inserted in the storage tank 18, a plurality of first springs 23 are jointly fixed between the bottom surface of the piston plates 22 and the inner bottom surface of the storage tank 18, pushing plates 24 penetrate through the bottom of the storage tank 18 and extend out, arc surfaces are arranged at the bottom ends of the pushing plates 24, rotating rollers 25 are jointly sleeved on the outer sides of the two fixed discs 17, the rotating rollers 25 are fixedly connected with the two fixed discs 17 through one-way bearings, a plurality of rotating rollers 25 are fixedly sleeved on the inner walls of the rubber rings 26, and a plurality of rotating roller arrays 28 are arranged on the inner surfaces of the rotating grooves 25 are respectively; during operation, the couplant is stored through the liquid storage tank 16, the couplant can flow into the storage tank 18 from the communicating pipe 19, when the linear driving mechanism drives the sliding block 5 and the connecting plate 7 to move, the smearing mechanism can be driven to integrally move under the connection action of the connecting mechanism, so that the rubber rings 26 and the rotating rollers 25 roll on the surface of the square steel pipe 2, the friction force between the two ends of the rotating rollers 25 and the square steel pipe 2 is increased by arranging the rubber rings 26, a gap is formed between the middle part of the rotating rollers 25 and the square steel pipe 2, and a abdication space is provided for the couplant smearing;
after the rotating roller 25 rotates, the rotating roller 25 drives the internal protruding strip 27 to move, when the protruding strip 27 contacts with the arc surface at the bottom of the pushing plate 24, the pushing plate 24 is pushed to move upwards by the protruding strip 27, the pushing plate 24 drives the piston plate 22 to move upwards, so that the couplant in the storage box 18 is extruded from the position of the one-way valve 21 of the discharge pipe 20, after the couplant is extruded, the couplant flows out of the liquid outlet groove 28 on the surface of the rotating roller 25 onto the surface of the square steel pipe 2, and then the extrusion function is completed, and after the protruding strip 27 is separated from the pushing plate 24, the piston plate 22 moves downwards to reset under the pulling action of the first spring 23, so that a new couplant can enter the storage box 18;
and because the rotating roller 25 is rotationally connected with the fixed disc 17 through the one-way bearing, the rotating roller 25 can only rotate in one direction, and when the linear driving mechanism drives the smearing mechanism to wholly reset, the rotating roller 25 stops rotating under the limiting effect of the one-way bearing, so that the condition of secondary smearing and couplant waste is avoided.
As a further embodiment of the invention, the connecting mechanism comprises two yielding grooves 29, the two yielding grooves 29 are all arranged on the surface of the connecting plate 7, connecting rods 30 are inserted into the two yielding grooves 29, limiting rings 31 are fixed on the surface of the connecting rods 30, the two limiting rings 31 are respectively arranged on the upper side and the lower side of the connecting plate 7, a one-way limiting mechanism is arranged above the connecting rods 30 and used for enabling the connecting rods 30 to move unidirectionally along the yielding grooves 29; during operation, when connecting plate 7 moves to the left side, promote connecting rod 30 through the groove 29 of stepping down and move to the left side, detect the welding seam defect when ultrasonic detection head 44, when the accurate position of welding seam is confirmed to the needs fine setting position, need to drive ultrasonic detection head 44 through linear drive mechanism and move the fine setting position to the right, at this moment, drive connecting plate 7 through linear drive mechanism and move to the right, through setting up the groove 29 of stepping down, step down connecting rod 30, and then avoid connecting rod 30 to move to the couplant top after finishing to scribbling along with connecting plate 7 to the right side, when moving to the left side again, the secondary is scribbled, the condition that leads to the couplant extravagant takes place, and limit connecting rod 30 to move to the right through setting up unidirectional stop gear, further guaranteed connecting rod 30's stability.
As a further embodiment of the present invention, the unidirectional limiting mechanism comprises a sliding rod 32, two ends of the sliding rod 32 are respectively connected to two sliding rails 4 in a sliding manner, two sleeves 33 are symmetrically inserted on the surface of the sliding rod 32 in a sliding manner, limiting discs 34 are fixedly sleeved on the top ends of the two sleeves 33, the two sleeves 33 are respectively sleeved on the outer sides of the two connecting rods 30, a third gear 35 is rotatably connected to the outer sides of the sleeves 33 through unidirectional bearings, a rack 36 is fixed on the outer wall of the sliding rail 4, the rack 36 is meshed with the corresponding third gear 35, and a sliding mechanism is arranged between the sleeves 33 and the connecting rods 30 and is used for enabling the sleeves 33 to vertically slide on the connecting rods 30; during operation, when the inner wall of the abdication groove 29 pushes the connecting rod 30 to move leftwards, the connecting rod 30 drives the sleeve 33 and the third gear 35 to move leftwards, the third gear 35 rotates on the rack 36, when the position of the ultrasonic detection head 44 needs to be finely adjusted, the sleeve 33 can only vertically slide along the connecting rod 30 under the action of the sliding mechanism, and the third gear 35 is connected with the sleeve 33 through the one-way bearing, so that the reverse rotation of the third gear 35 can be limited, the sleeve 33 is limited to move rightwards through the cooperation of the third gear 35 and the rack 36, the condition that the connecting rod 30 moves rightwards is avoided when the position of the ultrasonic detection head 44 is finely adjusted, and the condition that the coupling agent is secondarily smeared is avoided, and the condition that the coupling agent is wasted is caused is avoided.
As a further embodiment of the present invention, the sliding mechanism includes a sliding groove 37 and a sliding pin 38, the sliding groove 37 is opened on the outer wall of the sleeve 33, the sliding pin 38 is inserted inside the sliding groove 37, and the end of the sliding pin 38 is fixed on the side wall of the connecting rod 30; in operation, when the first cylinder 6 pushes the connection plate 7 to move up and down to adjust the heights of the smearing mechanism and the ultrasonic detection head 44, the slide pin 38 can slide inside the slide groove 37, so that the overall length of the sleeve 33 and the connection rod 30 can be adjusted, and by providing the slide groove 37 and the slide pin 38, the sleeve 33 can slide vertically only.
As a further embodiment of the invention, the outer side of the sleeve 33 is fixedly sleeved with a butt joint block 39, the top surface of the connecting plate 7 is fixedly provided with a pushing block 40, and the opposite sides of the pushing block 40 and the butt joint block 39 are provided with guide surfaces; when the connecting plate 7 moves rightwards to reset, the pushing block 40 and the butting block 39 are gradually close, and under the pushing action of the pushing block 40 and the guiding action of the guiding surface, the butting block 39 can be pushed upwards, so that the sleeve 33 is driven by the pushing block 40 to integrally move upwards, the third gear 35 is separated from the rack 36, the limit of the third gear 35 and the rack 36 on the sleeve 33 and the connecting rod 30 is eliminated, and the influence of the third gear 35 and the rack 36 on the reset of the smearing mechanism is avoided;
when the next detection is performed after the reset of the smearing mechanism is completed, the butting block 39 can slide down to be separated from the sleeve 33 under the action of gravity and the guiding action of the guiding surface in the process that the linear driving mechanism pushes the connecting plate 7 to move leftwards, so that the third gear 35 is meshed with the rack 36 again.
As a further embodiment of the invention, the side walls of the two fixing plates 17 are respectively fixed with a connecting strip 41, a stroking plate 42 is jointly fixed between the two connecting strips 41, and a gap is reserved between the stroking plate 42 and the surface of the square steel tube 2; during operation, through setting up smooth out with fingers dull and stereotyped 42, promote smooth out with fingers to scribbling accumulational couplant, and then be favorable to guaranteeing square steel pipe 2 surface couplant and scribble the homogeneity, and then be favorable to avoiding having couplant to scribble inhomogeneous condition emergence that causes the influence to the testing result.
As a further embodiment of the invention, the side walls of the two connecting strips 41 are rotatably connected with rollers 43, and the two rollers 43 are contacted with the surface of the square steel tube 2; during operation, as the rubber ring 26 is made of flexible materials, in the process of adjusting the height of the connecting plate 7 through the second electric cylinder 10, the size of the gap between the flat plate 42 and the surface of the square steel pipe 2 is difficult to ensure, and the roller 43 is arranged to enable the gap between the flat plate 42 and the surface of the square steel pipe 2 to be kept fixed, so that the situation that the surface distance between the flat plate 42 and the surface of the square steel pipe 2 is too short, the couplant is smeared thinner, and the influence on the detection result is avoided.
A method of detecting a detection device for a weld of a steel pipe as shown in fig. 1, the detection method comprising the steps of:
step one, clamping and positioning the square steel tube 2 through a clamping mechanism so that the top surface of the square steel tube 2 is horizontal;
step two, the heights of the smearing mechanism and the ultrasonic detection head 44 are adjusted through the first electric cylinder 6, so that the smearing mechanism and the ultrasonic detection head 44 are in contact with the surface of the square steel tube 2;
step three, driving the sliding block 5 to move leftwards along the sliding rail 4 through the linear driving mechanism, driving the ultrasonic detection head 44 and the smearing mechanism to synchronously move through the sliding block 5, smearing the couplant through the smearing mechanism, and immediately detecting the ultrasonic detection head 44 after smearing is finished;
and step four, after the detection is completed, the ultrasonic detection head 44 and the smearing mechanism are driven to reset through the linear driving mechanism, and the smearing mechanism stops smearing the couplant in the resetting process.
The working principle of the invention is as follows:
when the ultrasonic detection device is used, firstly, the square steel tube 2 is clamped and positioned through the clamping mechanism, so that the top surface of the square steel tube 2 is horizontal, then, the heights of the smearing mechanism and the ultrasonic detection head 44 are adjusted through the first electric cylinder 6, so that the smearing mechanism and the ultrasonic detection head 44 are in contact with the surface of the square steel tube 2, and the output shaft of the first electric motor 45 drives the screw 46 to rotate through starting the first electric motor 45, so that the sliding block 5 moves leftwards along the sliding rail 4, the ultrasonic detection head 44 and the smearing mechanism are driven to synchronously move through the sliding block 5, and the smearing mechanism is positioned in front of the ultrasonic detection head 44, so that before detection, the couplant is smeared on the surface of the square steel tube 2 through the smearing mechanism, and after the couplant is smeared, the ultrasonic detection head 44 can immediately detect, so that long-term exposure of the couplant to air is avoided, and the phenomenon that dust and other impurities are sticky and the couplant are dry is caused, and the situation that the detection result is affected is generated; when the detection is completed, the smearing mechanism can stop smearing the couplant in the resetting process of the ultrasonic detection head 44, so that the condition that the couplant is wasted due to secondary smearing is avoided.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims.
Claims (8)
1. Detection device for steel pipe welding seam, including detecting platform (1), its characterized in that: two clamping mechanisms are symmetrically fixed on the top surface of the detection table (1) and are used for clamping and positioning the square steel pipe (2);
the detection device comprises a detection table (1), and is characterized in that a support frame (3) is fixed on the top surface of the detection table (1), two sliding rails (4) are fixed on the outer wall of the support frame (3), sliding blocks (5) are connected between the two sliding rails (4) in a sliding mode, a linear driving mechanism is arranged on each sliding block (5), and the linear driving mechanism is used for driving the sliding blocks (5) to move along the sliding rails (4);
a first electric cylinder (6) is fixed on the top surface of the sliding block (5), the movable end of the first electric cylinder (6) penetrates through the sliding block (5) and extends out, a connecting plate (7) is fixed on the sliding block, and an smearing mechanism for smearing a couplant is arranged on the bottom surface of the connecting plate (7);
an ultrasonic detection head (44) for detecting the welding line on the surface of the square steel pipe (2) is fixed on the bottom surface of the connecting plate (7);
when the linear driving mechanism drives the sliding block (5) to move leftwards, the smearing mechanism is used for smearing the couplant on the surface of the square steel pipe (2), and when the ultrasonic detection head (44) moves rightwards to reset, the smearing mechanism stops smearing the couplant;
the smearing mechanism comprises a U-shaped frame (15) and a liquid storage tank (16), the U-shaped frame (15) is connected with the connecting plate (7) through a connecting mechanism, two side walls of the U-shaped frame (15) are respectively fixed with a fixed disc (17), two storage tanks (18) are jointly fixed between the fixed discs (17), the liquid storage tank (16) is fixed on the top surface of the supporting frame (3), communicating pipes (19) are fixedly communicated on the side walls of the liquid storage tank (16), the end parts of the communicating pipes (19) penetrate through the U-shaped frame (15) and the fixed discs (17) and then are fixedly communicated with the storage tanks (18), a plurality of discharge pipes (20) are fixedly communicated on the side walls of the storage tanks (18), one-way valves (21) are fixedly arranged at the end parts of the discharge pipes (20), piston plates (22) are inserted in the storage tanks (18), a plurality of first springs (23) are jointly fixed between the bottom surfaces of the storage tanks (22), pushing piston plates (24) are pushed by the inner bottom surfaces of the piston plates (22), the bottom surfaces (24) are pushed by the two arc-shaped rolling plates (24) and are fixedly connected with the bottom surfaces (24) which are fixedly connected with one another through rollers (24), the rotating roller (25) is rotationally connected with the two fixed discs (17) through one-way bearings, rubber rings (26) are sleeved at two ends of each fixed disc (17), a plurality of protruding strips (27) are fixed on the inner wall of the rotating roller (25) in a circumferential array, and a plurality of liquid outlet grooves (28) are formed in the surface of the rotating roller (25);
the connecting mechanism comprises two yielding grooves (29), the two yielding grooves (29) are formed in the surface of the connecting plate (7), connecting rods (30) are inserted into the two yielding grooves (29), limiting rings (31) are fixed on the surfaces of the connecting rods (30), the two limiting rings (31) are respectively arranged on the upper side and the lower side of the connecting plate (7), one-way limiting mechanisms are arranged above the connecting rods (30), and the one-way limiting mechanisms are used for enabling the connecting rods (30) to move unidirectionally along the yielding grooves (29).
2. A detection device for a weld of steel pipes as set forth in claim 1, wherein: the clamping mechanism comprises two positioning rings (8), the two positioning rings (8) are fixed on the top surface of the detection table (1) through brackets, the two positioning rings (8) are connected with a rotating ring (9) in a common rotating mode on the outer side of the positioning rings (8), a plurality of second electric cylinders (10) are fixed on the surface of the rotating ring (9), movable ends of the second electric cylinders (10) penetrate through the rotating ring (9) and are fixedly provided with positioning plates (11), the positioning plates (11) are in contact with the surface of the square steel tube (2), a first gear (12) is fixedly sleeved on the outer side of the rotating ring (9), a second gear (13) is meshed on one side of the first gear (12), a second motor (14) is arranged on one side of the second gear (13), and an output shaft of the second motor (14) is fixed on the detection table (1).
3. A detection device for a weld of steel pipes as set forth in claim 1, wherein: the unidirectional limiting mechanism comprises a sliding rod (32), two ends of the sliding rod (32) are respectively connected to two sliding rails (4) in a sliding mode, two sleeves (33) are symmetrically inserted in a sliding mode on the surface of the sliding rod (32), limiting discs (34) are fixedly sleeved on the top ends of the sleeves (33), the sleeves (33) are respectively sleeved on the outer sides of the connecting rods (30), third gears (35) are rotatably connected to the outer sides of the sleeves (33) through unidirectional bearings, racks (36) are fixed to the outer walls of the sliding rails (4), the racks (36) are meshed with the corresponding third gears (35), and a sliding mechanism is arranged between the sleeves (33) and the connecting rods (30) and used for enabling the sleeves (33) to vertically slide on the connecting rods (30).
4. A detection device for a weld of steel pipes according to claim 3, characterized in that: the sliding mechanism comprises a sliding groove (37) and a sliding pin (38), the sliding groove (37) is formed in the outer wall of the sleeve (33), the sliding pin (38) is inserted into the sliding groove (37), and the end part of the sliding pin (38) is fixed on the side wall of the connecting rod (30).
5. A detection device for a weld of steel pipes according to claim 3, characterized in that: the outside fixed cover of sleeve (33) is equipped with butt joint piece (39), be fixed with on the top surface of connecting plate (7) and promote piece (40), promote piece (40) with the guide face has all been seted up to the opposite side of butt joint piece (39).
6. A detection device for a weld of steel pipes as set forth in claim 1, wherein: connecting strips (41) are fixed on the side walls of the two fixing plates (17), a smoothing plate (42) is fixed between the two connecting strips (41), and a gap is reserved between the smoothing plate (42) and the surface of the square steel tube (2).
7. A detection apparatus for a weld of steel pipes as set forth in claim 6, wherein: the side walls of the two connecting strips (41) are respectively and rotatably connected with a roller (43), and the two rollers (43) are respectively contacted with the surface of the square steel tube (2).
8. A detection method for a detection device for a weld of a steel pipe, which is applicable to a detection device for a weld of a steel pipe as claimed in any one of claims 1 to 7, characterized in that: the detection method comprises the following steps:
step one, clamping and positioning the square steel tube (2) through a clamping mechanism, so that the top surface of the square steel tube (2) is horizontal;
step two, the heights of the smearing mechanism and the ultrasonic detection head (44) are adjusted through the first electric cylinder (6), so that the smearing mechanism and the ultrasonic detection head (44) are in contact with the surface of the square steel pipe (2);
driving the sliding block (5) to move leftwards along the sliding rail (4) through the linear driving mechanism, driving the ultrasonic detection head (44) and the smearing mechanism to synchronously move through the sliding block (5), smearing the couplant through the smearing mechanism, and immediately detecting the ultrasonic detection head (44) after smearing is finished;
and fourthly, after the detection is completed, the ultrasonic detection head (44) and the smearing mechanism are driven to reset through the linear driving mechanism, and the smearing mechanism stops smearing the couplant in the resetting process.
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| CN116577411A (en) * | 2023-05-23 | 2023-08-11 | 威海瀚克船舶科技有限公司 | Ultrasonic nondestructive testing platform for ship welding line |
| CN117007680B (en) * | 2023-09-26 | 2023-12-29 | 天津悦华阀门科技有限公司 | Mechanical workpiece welding seam detection device |
| CN117388354B (en) * | 2023-10-11 | 2024-04-12 | 南京博克纳自动化系统有限公司 | Bearing ring surface vortex detection equipment |
| CN117783283B (en) * | 2024-02-23 | 2024-04-30 | 西安恒宇钢管制造有限公司 | Ultrasonic nondestructive testing equipment for weld joint of spiral welded pipe |
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