阅读说明：本技术 一种抽油杆漏磁探伤机及其使用方法 (Sucker rod magnetic flux leakage flaw detector and use method thereof ) 是由 吴春学 吴国标 赵齐兵 杨善利 于 2021-09-02 设计创作，主要内容包括：本发明公开了一种抽油杆漏磁探伤机及其使用方法,涉及漏磁探伤机技术领域,为解决现有的抽油杆漏磁探伤机,在检测不同抽油杆时,需要更换同样规格的探头,废时废力,加大工作强度,也降低工作效率,同时驱动滚轮及压紧轮没有包胶,检测时噪音大,不环保,影响工人身体健康；抽油杆在前进时抖动大,检测精度降低的问题。所述手轮的下方安装有油杆流水线架,所述油杆流水线架的一侧设置有感应控制台,所述油杆流水线架的中间设置有探头,所述探头的一侧设置有激磁伐包,所述油杆流水线架的下端安装有下导向机构,所述探头的一侧设置有油杆探头机构,所述手轮的一侧安装有导向柱,所述油杆流水线架的一侧设置有上料流水线。(The invention discloses a sucker rod magnetic leakage flaw detector and a using method thereof, relates to the technical field of magnetic leakage flaw detectors, and aims to solve the problems that when the existing sucker rod magnetic leakage flaw detector is used for detecting different sucker rods, probes with the same specification need to be replaced, the waste force is generated when the sucker rod magnetic leakage flaw detector is used, the working strength is increased, the working efficiency is also reduced, meanwhile, a driving roller and a pressing wheel are not coated with rubber, the noise is high during detection, the environment is not protected, and the body health of workers is influenced; the sucker rod shakes greatly when advancing, detects the problem that the precision reduces. The oil rod assembly line frame is installed to the below of hand wheel, one side of oil rod assembly line frame is provided with the induction control platform, the centre of oil rod assembly line frame is provided with the probe, one side of probe is provided with excitation valve package, guiding mechanism is installed down to the lower extreme of oil rod assembly line frame, one side of probe is provided with oil rod probe mechanism, the guide post is installed to one side of hand wheel, one side of oil rod assembly line frame is provided with the material loading assembly line.)

1. The utility model provides a sucker rod magnetic leakage flaw detector, includes hand wheel (1), its characterized in that: an oil rod assembly line frame (39) is arranged below the hand wheel (1), an induction control console (40) is arranged on one side of the oil rod assembly line frame (39), a probe (8) is arranged in the middle of the oil rod assembly line frame (39), an excitation valve bag (7) is arranged on one side of the probe (8), the lower end of the oil rod assembly line frame (39) is provided with a lower guide mechanism (19), an oil rod probe mechanism (25) is arranged on one side of the probe (8), a guide post (10) is arranged on one side of the hand wheel (1), one side of the oil rod assembly line rack (39) is provided with an upper material assembly line (45), one end of the oil rod assembly line frame (39) is provided with a blanking assembly line (46), a line rack (38) is arranged on the inner side of the oil rod line rack (39), and a feeding and discharging mechanical structure (47) is arranged at one end of the assembly line frame (38).

2. The leakage flux flaw detector of the sucker rod according to claim 1, characterized in that: host computer wallboard (2) are installed to the below of hand wheel (1), the one end of host computer wallboard (2) is provided with pinch-off blades (3), and goes up the one end integrated into one piece setting of pinch-off blades (3) and host computer wallboard (2), the below of going up pinch-off blades (3) is provided with motor (4), underframe (5) is installed to the below of motor (4), the lower extreme of underframe (5) is provided with lower margin (6), and the lower extreme integrated into one piece setting of lower margin (6) and underframe (5).

3. The leakage flux flaw detector of the sucker rod according to claim 2, characterized in that: the automatic lifting device is characterized in that a conveying roller (16) is installed at one end of the motor (4), the conveying roller (16) is connected with one end of the motor (4) in a welding mode, a first lifting table plate (17) is installed below the conveying roller (16), a second lifting table plate (18) is arranged below the first lifting table plate (17), a driving roller (62) is installed on one side of the second lifting table plate (18), a pressing wheel rubber coating (63) is arranged on the outer side of the driving roller (62), and the pressing wheel rubber coating (63) and the driving roller (62) are integrally formed.

4. The leakage flux flaw detector of the sucker rod according to claim 1, characterized in that: the below of lower guiding mechanism (19) is provided with third uide bushing (20), guiding axle (21) is installed to the below of third uide bushing (20), the below of guiding axle (21) is provided with fixed cover (22), lift cylinder (23) are installed to one side of guiding axle (21).

5. The leakage flux flaw detector of the sucker rod according to claim 1, characterized in that: cylinder (9) are installed to the below of guide post (10), the below of cylinder (9) is provided with cylinder mounting panel (12), and cylinder mounting panel (12) and the below integrated into one piece setting of cylinder (9), first uide bushing (11) is installed to the lower extreme of guide post (10), the below of first uide bushing (11) is provided with second uide bushing (13), pinch-off blades (14) are installed to the below of second uide bushing (13), the one end of pinch-off blades (14) is provided with pinch-off wheels axle (15), crossbeam (24) are installed to one side of guide post (10).

6. The leakage flux flaw detector of the sucker rod according to claim 1, characterized in that: probe protective sheath (64) down are installed in the outside of probe (8), the centre of probe protective sheath (64) is provided with horn mouth (41) down, pin (42) are installed to the one end of probe (8), probe protective sheath (64) inner wall is provided with wear pad (43) down, and wear pad (43) and probe protective sheath (64) inner wall integrated into one piece setting down.

7. The leakage flux flaw detector of the sucker rod according to claim 1, characterized in that: base (27) are installed to one side of oil pole probe mechanism (25), one side of base (27) is provided with uide bushing joint chair (26), third fixed plate (30) are installed to the one end of uide bushing joint chair (26), the top of third fixed plate (30) is provided with first fixed plate (28), second fixed plate (29) are installed to the top of first fixed plate (28), the outside of oil pole probe mechanism (25) is provided with little platen (35).

8. The leakage flux flaw detector of the sucker rod according to claim 7, wherein: a first spring (32) is installed below the small bedplate (35), a fixing bolt (34) is arranged below the first spring (32), a second spring (33) is installed below the fixing bolt (34), a lifting fixing plate (31) is arranged at the lower end of the second spring (33), the lifting fixing plate (31) is connected with the lower end of the second spring (33) in a welding mode, a second movable column (37) is installed on one side of the fixing bolt (34), and a first movable column (36) is arranged below the second movable column (37).

9. The leakage flux flaw detector of the sucker rod according to claim 1, characterized in that: the magnetic flux leakage detection device is characterized in that a detection host (44) is installed on one side of the induction console (40), a magnetic flux leakage flaw detector (53) is arranged on one side of the detection host (44), a power control cabinet (48) is installed on one side of the induction console (40), a stabilized voltage power supply (49) is arranged on one side of the power control cabinet (48), a magnetizing power supply (65) is installed on one side of the stabilized voltage power supply (49), a signal processing structure (50) is arranged on one side of the magnetizing power supply (65), a computer control structure (51) is installed on one side of the signal processing structure (50), a signal monitor (52) is arranged on one side of the computer control structure (51), a clamping mechanism (54) is installed on one side of the detection host (44), a driving structure (55) is arranged on one side of the clamping mechanism (54), and an avoiding structure (56) is installed on one side of the driving structure (55), dodge one side of structure (56) and be provided with magnetizer (57), marker (58) are installed to one side of magnetizer (57), one side of marker (58) is provided with signal acquisition structure (59), enlarge processing structure (60) are installed to one side of signal acquisition structure (59), one side of enlarging processing structure (60) is provided with demagnetization structure (61).

10. The use method of the sucker rod flux leakage flaw detector according to any one of claims 1 to 9, comprising the steps of:

step 1: firstly, regulating and controlling an induction control console (40) and a detection host (44) to enable the whole equipment to run, and controlling a flow line rack (38) on an oil rod flow line rack (39) to start transferring parts for flaw detection;

step 2: respectively transporting and receiving parts on an upper material assembly line (45) and a lower material assembly line (46) along with a feeding and discharging mechanical structure (47), and debugging the whole equipment;

and step 3: a workpiece enters the oil rod host from an upper material flow line (45) in the feeding direction, a signal is provided through the induction control console (40) and the computer control structure (51), only a return instruction is given through the single computer, and the lifting cylinder (23) drives the third guide sleeve (20);

and 4, step 4: then the lifting bedplate (17) is driven to jack up the conveying roller (16), the motor (4) rotates, after an oil rod joint hoop passes, the cylinder (9) is started to drive and clamp the oil rod, so that the oil rod stably enters a second clamping and transferring part at a uniform speed to reach the oil rod probe mechanism (8), and the quality of the rod body is judged through detection and acquisition;

and 5: when oil rods with different specifications need to be detected, the probe (8) is replaced only by connecting the probe with the pin (42) for replacement;

step 6: the whole operation is stable, the full automation of the feeding assembly line (45) and the discharging assembly line (46), the detection and the sorting process is realized, and the hand wheel (1) is utilized to meet the requirement of manual operation.

Technical Field

The invention relates to the technical field of magnetic leakage flaw detectors, in particular to a sucker rod magnetic leakage flaw detector and a using method thereof.

Background

The sucker rod in oil field is at the well head operation in-process, because the oil well is very dark (some reach 3000 meters), and borehole operation environment is abominable, has a lot of corrosive liquids, and at the beam-pumping unit oil pumping in-process, there are defects such as crackle, corrosion pit, eccentric wear, pockmark in many body of rod outer walls of sucker rod, only rely on the naked eye can't discern and detect, and this needs the instrument to detect and detect a flaw.

The conventional magnetic leakage flaw detector for the sucker rod needs to replace probes with the same specification when different sucker rods are detected, the waste force is generated when the sucker rod is used, the working strength is enhanced, the working efficiency is also reduced, meanwhile, the driving roller and the pressing wheel are not coated with rubber, the noise is high during detection, the environment is not protected, and the health of workers is influenced; the pumping rod greatly shakes when advancing, and the detection precision is reduced; therefore, the existing requirements are not met, and the sucker rod magnetic flux leakage flaw detector and the using method thereof are provided.

Disclosure of Invention

The invention aims to provide a sucker rod magnetic leakage flaw detector and a using method thereof, aiming at solving the problems that when the existing sucker rod magnetic leakage flaw detector provided in the background technology is used for detecting different sucker rods, probes with the same specification need to be replaced, the waste force is generated when the sucker rod is used, the working strength is increased, the working efficiency is also reduced, meanwhile, a driving roller and a pressing wheel are not coated with rubber, the noise is high during detection, the environment is not protected, and the body health of workers is influenced; the sucker rod shakes greatly when advancing, detects the problem that the precision reduces.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a sucker rod magnetic leakage flaw detector, includes the hand wheel, the oil pole assembly line frame is installed to the below of hand wheel, one side of oil pole assembly line frame is provided with the response control cabinet, the centre of oil pole assembly line frame is provided with the probe, one side of probe is provided with the excitation valve package, guiding mechanism is down installed to the lower extreme of oil pole assembly line frame, one side of probe is provided with oil pole probe mechanism, the guide post is installed to one side of hand wheel, one side of oil pole assembly line frame is provided with the material loading assembly line, the unloading assembly line is installed to the one end of oil pole assembly line frame, the inboard of oil pole assembly line frame is provided with the assembly line frame, last unloading mechanical structure is installed to the one end of assembly line frame.

Preferably, the host computer wallboard is installed to the below of hand wheel, the one end of host computer wallboard is provided with the clamp plate, and goes up the clamp plate and set up with the one end integrated into one piece of host computer wallboard, the below of going up the clamp plate is provided with the motor, the underframe is installed to the below of motor, the lower extreme of underframe is provided with the lower margin, and the lower extreme integrated into one piece setting of lower margin and underframe.

Preferably, one end of the motor is provided with a conveying roller, the conveying roller is connected with one end of the motor in a welding mode, a first lifting platen is arranged below the conveying roller, a second lifting platen is arranged below the first lifting platen, a driving roller is arranged on one side of the second lifting platen, a pinch roller rubber coating is arranged on the outer side of the driving roller, and the pinch roller rubber coating and the outer side of the driving roller are integrally formed.

Preferably, a third guide sleeve is arranged below the lower guide mechanism, a guide shaft is installed below the third guide sleeve, a fixed sleeve is arranged below the guide shaft, and a lifting cylinder is installed on one side of the guide shaft.

Preferably, the cylinder is installed to the below of guide post, the below of cylinder is provided with the cylinder mounting panel, and the below integrated into one piece setting of cylinder mounting panel and cylinder, first uide bushing is installed to the lower extreme of guide post, the below of first uide bushing is provided with the second uide bushing, the pinch-off blades is installed to the below of second uide bushing, the one end of pinch-off blades is provided with the pinch-off axles, the crossbeam is installed to one side of guide post.

Preferably, a lower probe protective sleeve is installed on the outer side of the probe, a horn mouth is formed in the middle of the lower probe protective sleeve, a pin is installed at one end of the probe, a wear-resistant sheet is arranged on the inner wall of the lower probe protective sleeve, and the wear-resistant sheet and the inner wall of the lower probe protective sleeve are integrally formed.

Preferably, a base is installed on one side of the oil rod probe mechanism, a guide sleeve connecting seat is arranged on one side of the base, a third fixing plate is installed at one end of the guide sleeve connecting seat, a first fixing plate is arranged above the third fixing plate, a second fixing plate is installed above the first fixing plate, and a small platen is arranged on the outer side of the oil rod probe mechanism.

Preferably, a first spring is installed below the small table plate, a fixing bolt is arranged below the first spring, a second spring is installed below the fixing bolt, a lifting fixing plate is arranged at the lower end of the second spring and is connected with the lower end of the second spring in a welding mode, a second movable column is installed on one side of the fixing bolt, and a first movable column is arranged below the second movable column.

Preferably, a detection host is installed on one side of the induction control console, a magnetic leakage flaw detector is arranged on one side of the detection host, a power control cabinet is installed on one side of the induction control console, a stabilized voltage power supply is arranged on one side of the power control cabinet, a magnetization power supply is installed on one side of the stabilized voltage power supply, a signal processing structure is arranged on one side of the magnetization power supply, a computer control structure is installed on one side of the signal processing structure, a signal monitor is arranged on one side of the computer control structure, a clamping mechanism is installed on one side of the detection host, a driving structure is arranged on one side of the clamping mechanism, an avoiding structure is installed on one side of the driving structure, a magnetizer is arranged on one side of the avoiding structure, a marking device is installed on one side of the magnetizer, a signal collecting structure is arranged on one side of the marking device, an amplifying processing structure is installed on one side of the signal collecting structure, and a demagnetization structure is arranged on one side of the amplification processing structure.

Preferably, the use method of the leakage flux flaw detector for the sucker rod comprises the following steps:

step 1: firstly, regulating and controlling an induction control console and a detection host machine to enable the whole equipment to run, and controlling a production line rack on a production line rack of the oil rod to start transferring parts for flaw detection;

step 2: respectively transporting and receiving parts on an feeding assembly line and a discharging assembly line along with a feeding and discharging mechanical structure, and debugging the whole equipment;

and step 3: the workpiece enters the oil rod host from an upper material flow line in the feeding direction, a signal is provided through the induction console and the computer control structure, only a command is returned through the single-position machine, and the lifting cylinder drives the third guide sleeve;

and 4, step 4: then the lifting bedplate is driven to jack up the conveying roller, after an oil rod connecting joint hoop passes through the rotation of a motor, a cylinder is started to drive and clamp the oil rod, so that the oil rod stably enters a second clamping and transmitting part at a uniform speed to reach an oil rod probe mechanism, and the quality of the rod body is judged through detection and acquisition;

and 5: when oil rods with different specifications need to be detected, the probe is replaced only by replacing the probe, and the probe is connected with the probe by using a pin for replacement;

step 6: the whole operation is stable, the full automation of the feeding assembly line, the blanking assembly line, the detection and the sorting process is realized, and the hand wheel can also meet the requirement of manual operation.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the whole equipment is operated by the arranged regulation and control induction console and the detection host, the horn mouth, the wear-resistant sheet and the like are arranged in front of the detection probe, so that on one hand, the dead zone can be reduced to the maximum extent, on the other hand, the service life of the probe is prolonged, the probes can be replaced only by detecting different oil rods, the probes are connected by pins and are convenient to replace, the driving roller and the pressing wheel are encapsulated, the noise is low during detection, and the environment is protected; the sucker rod shake greatly when advancing, it reduces to detect the precision, the work piece gets into the oil pole host computer by the material loading assembly line of feeding direction, provide the signal through induction control platform and computer control structure, only return the instruction through the unit computer, the lift cylinder drives the third uide bushing, drive lift platen jack-up conveying roller again, rotate through the motor, wait the oil pole connect the festival hoop after passing, the cylinder starts, drive and press from both sides tight oil pole, make the oil pole uniform velocity steadily get into the tight portion of transferring of second clamp and arrive oil pole probe mechanism, carry out the quality judgement to the body of rod through detecting the collection.

2. Through the probe protective sheath that sets up: the detection probe is provided with a horn mouth, a wear-resistant sheet and the like in front, the service life of the probe can be greatly prolonged, the whole equipment is intelligently controlled by utilizing the induction control console, the detection host and the oil rod assembly line frame, so that the detection software is digitalized, the horizontal coordinate of a detection curve graph represents the position of a defect on an oil rod by taking m as a unit, and the accurate positioning of the defect can be realized; the ordinate, representing the depth of the defect in mm, allows a near quantification of the defect, with a deviation not exceeding 10%.

3. When the surface of the oil rod is scanned, and a leakage magnetic field formed by defects is scanned, the vertical component of the leakage magnetic field is converted into an electric signal by a signal processing structure, the electric signal is sent to a computer control structure after being amplified and denoised, the electric signal is analyzed, calculated and the like, and an instruction is sent to drive a marking device to mark a defective workpiece.

Drawings

FIG. 1 is a schematic side view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is an enlarged view of a portion of the rod probe of the present invention;

FIG. 4 is a top view of the rod probe of the present invention;

FIG. 5 is a schematic view of the oil rod assembly line of the present invention;

FIG. 6 is a system configuration view of a leakage flux flaw detector of the present invention;

in the figure: 1. a hand wheel; 2. a host wallboard; 3. an upper clamping plate; 4. a motor; 5. a lower frame; 6. ground feet; 7. exciting the valve bag; 8. a probe; 9. a cylinder; 10. a guide post; 11. a first guide sleeve; 12. a cylinder mounting plate; 13. a second guide sleeve; 14. a clamping plate; 15. clamping the wheel shaft; 16. a conveying roller; 17. a first lift platen; 18. a second lift platen; 19. a lower guide mechanism; 20. a third guide sleeve; 21. a guide shaft; 22. fixing a sleeve; 23. a lifting cylinder; 24. a cross beam; 25. a sucker rod probe mechanism; 26. the guide sleeve is connected with the base; 27. a base; 28. a first fixing plate; 29. a second fixing plate; 30. a third fixing plate; 31. a lifting fixing plate; 32. a first spring; 33. a second spring; 34. fixing the bolt; 35. a small platen; 36. a first movable column; 37. a second movable column; 38. a line assembly frame; 39. a sucker rod assembly line frame; 40. an induction console; 41. a bell mouth; 42. a pin; 43. a wear resistant sheet; 44. detecting a host; 45. a material loading line; 46. a blanking production line; 47. a feeding and discharging mechanical structure; 48. a power control cabinet; 49. a regulated power supply; 50. a signal processing structure; 51. a computer control structure; 52. a signal monitor; 53. a magnetic flux leakage flaw detector; 54. a clamping mechanism; 55. a drive structure; 56. an avoidance structure; 57. a magnetizer; 58. a marker; 59. a signal acquisition structure; 60. an amplification processing structure; 61. a demagnetization structure; 62. driving the roller; 63. wrapping a pinch roller with rubber; 64. a lower probe protective sleeve; 65. and (4) magnetizing the power supply.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-6, an embodiment of the present invention is shown: a flux leakage flaw detector for sucker rods comprises a hand wheel 1, an oil rod flow line rack 39 is installed below the hand wheel 1, an induction control console 40 is arranged on one side of the oil rod flow line rack 39, a probe 8 is arranged in the middle of the oil rod flow line rack 39, an excitation valve package 7 is arranged on one side of the probe 8, a lower guide mechanism 19 is installed at the lower end of the oil rod flow line rack 39, an oil rod probe mechanism 25 is arranged on one side of the probe 8, a guide post 10 is installed on one side of the hand wheel 1, a feeding assembly line 45 is arranged on one side of the oil rod flow line rack 39, a discharging assembly line 46 is installed at one end of the oil rod flow line rack 39, a flow line rack 38 is arranged on the inner side of the oil rod flow line rack 39, and a feeding and discharging mechanical structure 47 is installed at one end of the flow line rack 38.

Further, host computer wallboard 2 is installed to the below of hand wheel 1, the one end of host computer wallboard 2 is provided with pinch-off blades 3, and goes up pinch-off blades 3 and host computer wallboard 2's one end integrated into one piece setting, the below of going up pinch-off blades 3 is provided with motor 4, underframe 5 is installed to the below of motor 4, the lower extreme of underframe 5 is provided with lower margin 6, and lower extreme integrated into one piece setting of lower margin 6 and underframe 5.

Further, a conveying roller 16 is installed at one end of the motor 4, the conveying roller 16 is connected with one end of the motor 4 in a welding mode, a first lifting platen 17 is installed below the conveying roller 16, a second lifting platen 18 is arranged below the first lifting platen 17, a driving roller 62 is installed on one side of the second lifting platen 18, a pinch roller rubber coating 63 is arranged on the outer side of the driving roller 62, and the pinch roller rubber coating 63 and the outer side of the driving roller 62 are integrally formed.

Further, a third guide sleeve 20 is arranged below the lower guide mechanism 19, a guide shaft 21 is arranged below the third guide sleeve 20, a fixed sleeve 22 is arranged below the guide shaft 21, and a lifting cylinder 23 is arranged on one side of the guide shaft 21.

Further, cylinder 9 is installed to the below of guide post 10, the below of cylinder 9 is provided with cylinder mounting panel 12, and cylinder mounting panel 12 sets up with the below integrated into one piece of cylinder 9, first uide bushing 11 is installed to the lower extreme of guide post 10, the below of first uide bushing 11 is provided with second uide bushing 13, pinch-off blades 14 are installed to the below of second uide bushing 13, the one end of pinch-off blades 14 is provided with pinch-off wheels axle 15, crossbeam 24 is installed to one side of guide post 10.

Further, a lower probe protective sleeve 64 is installed on the outer side of the probe 8, a horn mouth 41 is arranged in the middle of the lower probe protective sleeve 64, a pin 42 is installed at one end of the probe 8, a wear-resistant sheet 43 is arranged on the inner wall of the lower probe protective sleeve 64, and the wear-resistant sheet 43 and the inner wall of the lower probe protective sleeve 64 are integrally formed.

Further, a base 27 is installed on one side of the oil rod probe mechanism 25, a guide sleeve connecting seat 26 is arranged on one side of the base 27, a third fixing plate 30 is installed at one end of the guide sleeve connecting seat 26, a first fixing plate 28 is arranged above the third fixing plate 30, a second fixing plate 29 is installed above the first fixing plate 28, and a small platen 35 is arranged on the outer side of the oil rod probe mechanism 25.

Further, a first spring 32 is installed below the small platen 35, a fixing bolt 34 is arranged below the first spring 32, a second spring 33 is installed below the fixing bolt 34, a lifting fixing plate 31 is arranged at the lower end of the second spring 33, the lifting fixing plate 31 is connected with the lower end of the second spring 33 in a welding mode, a second movable column 37 is installed on one side of the fixing bolt 34, and a first movable column 36 is arranged below the second movable column 37.

Further, a detection host 44 is installed on one side of the induction console 40, a magnetic flux leakage flaw detector 53 is arranged on one side of the detection host 44, a power control cabinet 48 is installed on one side of the induction console 40, a stabilized voltage power supply 49 is arranged on one side of the power control cabinet 48, a magnetizing power supply 65 is installed on one side of the stabilized voltage power supply 49, a signal processing structure 50 is arranged on one side of the magnetizing power supply 65, a computer control structure 51 is installed on one side of the signal processing structure 50, a signal monitor 52 is arranged on one side of the computer control structure 51, a clamping mechanism 54 is installed on one side of the detection host 44, a driving structure 55 is arranged on one side of the clamping mechanism 54, an avoiding structure 56 is installed on one side of the driving structure 55, a magnetizer 57 is arranged on one side of the avoiding structure 56, and a marking device 58 is installed on one side of the magnetizer 57, one side of marking ware 58 is provided with signal acquisition structure 59, the processing structure 60 that enlargies is installed to one side of signal acquisition structure 59, the one side of processing structure 60 that enlargies is provided with demagnetization structure 61.

Further, the use method of the sucker rod magnetic flux leakage flaw detector comprises the following steps:

step 1: firstly, regulating and controlling an induction control console 40 and a detection host 44 to enable the whole equipment to run, and controlling a flow line rack 38 on a sucker rod flow line rack 39 to start transferring parts for flaw detection;

step 2: the parts are respectively transported and received on the material loading assembly line 45 and the material unloading assembly line 46 along with the material loading and unloading mechanical structure 47, and after the whole equipment is debugged;

and step 3: the workpiece enters the oil rod host from an upper material flow line 45 in the feeding direction, signals are provided through the induction control table 40 and the computer control structure 51, only a command is returned through the single computer, and the lifting cylinder 23 drives the third guide sleeve 20;

and 4, step 4: then the first lifting bedplate 17 is driven to jack up the conveying roller 16, the motor 4 rotates, after the oil rod joint hoop passes, the cylinder 9 is started to drive the oil rod to be clamped, so that the oil rod stably enters a second clamping and transferring part at a uniform speed to reach the oil rod probe mechanism 25, and the quality of the rod body is judged through detection and acquisition;

and 5: when oil rods with different specifications need to be detected, the probe 8 is replaced only by connecting the probe with the pin 42;

step 6: the whole operation is stable, the full automation of the feeding assembly line 45 and the blanking assembly line 46 and the detection and separation processes is realized, and the hand wheel 1 can also meet the requirement of manual operation.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.