CN110133109B - Ultrasonic flaw detection device and flaw detection method thereof - Google Patents
Ultrasonic flaw detection device and flaw detection method thereof Download PDFInfo
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- CN110133109B CN110133109B CN201910449825.4A CN201910449825A CN110133109B CN 110133109 B CN110133109 B CN 110133109B CN 201910449825 A CN201910449825 A CN 201910449825A CN 110133109 B CN110133109 B CN 110133109B
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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
- G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
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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
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Abstract
The invention discloses an ultrasonic flaw detection device which comprises a base, wherein a box body is connected to the top end of the base through a screw, a controller is connected to the right end of the front side of the box body through a screw, a valve is connected to the center position of the bottom end of the front side of the box body in a screwed mode, supporting legs are welded to four corners of the top end of the base, a rotating mechanism is welded to the top ends of the supporting legs, a water pump is connected to the center position of the rear side of the box body through a screw and electrically connected with the controller, one end of a water inlet pipe is connected to a water inlet of the water pump in a screwed mode, the other end of the water inlet pipe is connected to the center position of the bottom end of the rear side. When using, can not only detect the steel pipe of thickness difference, the steel pipe can rotate at the uniform velocity moreover, prevents to detect and appears omitting, and degree of automation is high, and detection efficiency is high, more does benefit to the popularization.
Description
Technical Field
The invention relates to the technical field of metal detection, in particular to an ultrasonic flaw detection device and a flaw detection method thereof.
Background
Ultrasonic flaw detection is a method for detecting the flaw of a part by using the characteristic that ultrasonic energy penetrates into the depth of a metal material and is reflected at the edge of an interface when the ultrasonic energy enters another section from the section. The steel pipe is an important steel material which is widely applied, and the wall of the steel pipe has defects of longitudinal cracks, transverse cracks, folding, layering and the like due to the influence of various factors in the production process of the steel pipe. If the steel pipe is defective, the steel pipe will break during use to cause accidents and even cause serious consequences, and therefore, ultrasonic flaw detection needs to be carried out on the steel pipe before the steel pipe is delivered from a factory. The method mainly adopts a probe water film coupling method to carry out online flaw detection.
At present, current ultrasonic flaw detection device is mostly special steel pipe and detects a flaw, can only detect the steel pipe of same thickness, and the steel pipe can not rotate when detecting moreover, leads to detecting to have easily and omits, and detection efficiency is low, consequently designs a full-automatic rotation type ultrasonic flaw detection device at present.
Disclosure of Invention
The present invention is directed to an ultrasonic flaw detection apparatus and a flaw detection method thereof, which solve the problems of the background art described above.
In order to achieve the purpose, the invention provides the following technical scheme: an ultrasonic flaw detection device comprises a base, wherein a box body is connected to the top end of the base through a screw, a controller is connected to the right end of the front side of the box body through a screw, a valve is connected to the center of the bottom end of the front side of the box body through a screw, and supporting legs are welded to four corners of the top end of the base;
the top end of the supporting leg is welded with a rotating mechanism, a water pump is connected to the central position of the rear side of the box body through a screw and is electrically connected with the controller, a water inlet of the water pump is in threaded connection with one end of a water inlet pipe, the other end of the water inlet pipe is in threaded connection with the central position of the bottom end of the rear side of the box body, a water outlet of the water pump is in threaded connection with one end of a water outlet pipe, and the other end of the water outlet pipe is;
the rotating mechanism comprises a bottom plate, a groove body, a first speed reducing motor, a supporting plate, a rotating shaft, a roller, a belt pulley, a belt, a square tube and a spray head;
the bottom of the bottom plate is welded with the top ends of the supporting legs, the groove body is arranged on the upper surface of the bottom plate, a base is welded at the rear end of the right side of the bottom plate, the top end of the base is in screw connection with a first speed reduction motor, the first speed reduction motor is electrically connected with the controller, supporting plates are welded on the left side and the right side of the top end of the bottom plate, rotating shafts are rotatably connected to the front side and the rear side of the inner bottom end of each supporting plate through bearings, the outer wall of each rotating shaft is in interference fit with the inner ring of the corresponding bearing, the outer ring of each bearing is fixedly connected with the inner side of the corresponding supporting plate, rollers are in interference fit with the outer wall of each rotating shaft, the right side wall of the supporting plate, which is located on the right side and extends out of the right side of the, the two belt pulleys are rotatably connected through a belt, a square pipe is installed on the rear side of the top end of the inner side of the supporting plate, the water outlet pipe is in threaded connection with the center of the rear side of the square pipe, the plurality of spray heads are in threaded connection with the front side of the square pipe from left to right, and a moving mechanism is connected to the top end of the supporting plate through screws;
the moving mechanism comprises a shell, an ultrasonic flaw detector, a second speed reducing motor, a lead screw, a guide rod and a sliding block;
the utility model discloses an ultrasonic flaw detector, including casing, ultrasonic flaw detector, shaft coupling and controller, bearing, guide arm, guide pin, the bottom of casing and the top end screwed connection of backup pad, ultrasonic flaw detector screwed connection puts at the top central point of casing, the right side rear end and the second gear motor screwed connection of casing, and second gear motor and controller electric connection, the right inner wall that the output of second gear motor extended the casing passes through the shaft coupling and fixes with the one end locking of lead screw, the other end of lead screw is connected through the bearing rotation with the inner chamber left side of casing, the inner ring of bearing and the outer wall left side interference fit of lead screw, the outer loop of bearing and the inner chamber left side fixed connection of casing, the inner chamber front side at the casing is installed to the guide arm along the left right direction, the outer wall right side spiro union of lead screw has the slider.
Preferably, the height adjusting mechanism comprises a top plate, a screw, a rocking handle, a rectangular plate, a first connecting rod, a second connecting rod and a probe;
the rear side of the top plate is connected with a front side screw of the sliding block, the top end of the top plate is in threaded connection with a screw rod, the top end of the screw rod is welded with the bottom end of the rocking handle, the bottom end of the screw rod extends out of the lower surface of the top plate and is rotatably connected with the top center position of the rectangular plate through a bearing, the outer wall of the screw rod is in interference fit with the inner ring of the bearing, the outer ring of the bearing is fixedly connected with the top center position of the rectangular plate, the left and right center positions of the bottom end of the top plate are respectively provided with a supporting seat, the inner cavity of the supporting seat is connected with one end of a second connecting rod through a pin shaft, the other end of the second connecting rod is connected with the other end of the first connecting rod through a pin shaft, and the probe screw is connected with the bottom end of the rectangular, and the probe is electrically connected with the ultrasonic flaw detector.
Preferably, the bottom end of the inner cavity of the groove body inclines downwards from back to front.
Preferably, a plurality of the spray heads are arranged on the front side of the square pipe from left to right at intervals, and the distance between every two adjacent spray heads is 20 cm.
Preferably, the first link and the second link have the same length.
The use method of the device comprises the following steps,
step one, a steel pipe to be detected is placed between two rollers, the height of a probe is adjusted according to the outer diameter of the steel pipe, a rocking handle is rotated clockwise or anticlockwise, a rectangular plate drives the probe to move upwards or downwards under the driving of a screw rod, the distance between the probe and the steel pipe meets the requirement of flaw detection, and a start button of an ultrasonic flaw detector is pressed to enable the ultrasonic flaw detector to work;
step two, the water pump, the first speed reducing motor and the second speed reducing motor are controlled to be started through the controller, the water pump conveys the couplant in the box body into the square pipe under the action of self suction, the couplant is atomized and sprayed on the steel pipe through the spray head, the dripping couplant is collected by the groove body, the couplant can flow into the box body along the inclined plane of the groove body, the cyclic use of the couplant is realized, the rotating shaft and the belt pulley which are positioned on the rear side are driven by the first speed reducing motor to rotate clockwise, the belt pulley and the rotating shaft which are positioned on the front side synchronously rotate clockwise under the conduction action of the belt, so that the two rollers simultaneously rotate clockwise, and the steel pipe rotates clockwise under the rolling action of the rollers;
and step three, the second speed reducing motor drives the screw rod to rotate clockwise or anticlockwise, the thread rotating force of the screw rod can drive the sliding block to move leftwards or rightwards under the guiding action of the guide rod, so that the sliding block can drive the probe on the height adjusting mechanism to move leftwards or rightwards, and a worker can check the quality of the steel pipe according to the image displayed on the ultrasonic flaw detector.
Preferably, the concrete step that makes the distance of probe to steel pipe satisfy the requirement of detecting a flaw in step one does, when the screw rod is clockwise or anticlockwise rotation, because the screw rod is interlock with the screw thread of roof, the screw rod will drive the rectangular plate and upwards or move down, because first connecting rod is the same with the length of second connecting rod, thereby make the contained angle between two sets of first connecting rods of the left and right sides and the second connecting rod will diminish or grow, it is spacing to the rectangular plate realization through the cooperation of first connecting rod and second connecting rod, make the rectangular plate can drive the probe and upwards or move down perpendicularly, it meets the coupling requirement of detecting a flaw to reach the straight line distance of probe to the steel pipe outer wall, stop rotatory rocking handle, just realize the altitude mixture control of probe.
The ultrasonic flaw detection device and the flaw detection method thereof provided by the invention have the beneficial effects that:
1. according to the invention, the rotating mechanism can be used for placing steel pipes with different diameters, the steel pipes can also rotate clockwise, the coupling agent can be uniformly sprayed on the steel pipes through the cooperation of the water pump, the square pipe and the spray head, the probe is convenient for flaw detection, and when the device is used, the steel pipes with different thicknesses can be detected, and the steel pipes can rotate at a constant speed, so that detection omission is prevented;
2. the invention can adjust the space between the probe and the steel pipe on the rotating mechanism through the heightening mechanism, so that the probe can reach the coupling flaw detection height, the probe can move left and right at a constant speed through the moving mechanism, the steel pipe can be detected comprehensively under the rotating action of the steel pipe, the automation degree is high, the detection efficiency is high, and the popularization is facilitated.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a left side elevation view of the present invention;
FIG. 3 is a top cross-sectional view of the movement mechanism of the present invention;
fig. 4 is a front view of the height adjustment mechanism of the present invention.
In the figure: 1. the base, 2, the box, 3, the controller, 4, the valve, 5, the supporting leg, 6, the water pump, 7, the inlet tube, 8, the outlet pipe, 9, the bottom plate, 10, the cell body, 11, first gear motor, 12, the backup pad, 13, the pivot, 14, the cylinder, 15, the belt pulley, 16, the belt, 17, square pipe, 18, the shower nozzle, 19, the casing, 20, the ultrasonic flaw detector, 21, second gear motor, 22, the lead screw, 23, the guide arm, 24, the slider, 25, the roof, 26, the screw rod, 27, the rocking handle, 28, the rectangular plate, 29, first connecting rod, 30, the second connecting rod, 31, the probe.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: an ultrasonic flaw detection device comprises a base 1, wherein a box body 2 is connected to the top end of the base 1 through screws, flaw detection couplant is stored in the box body 2, a controller 3 is connected to the right end of the front side of the box body 2 through screws, a valve 4 is screwed at the center of the bottom end of the front side of the box body 2, the valve 4 is opened, used couplant waste liquid in the box body 2 can be discharged, the couplant is convenient to replace, and supporting legs 5 are welded to four corners of the top end of the base 1;
the top end of the supporting leg 5 is welded with a rotating mechanism, a water pump 6 is connected to the central position of the rear side of the box body 2 through a screw, the water pump 6 is electrically connected with the controller 3, the water pump 6 not only can convey the couplant in the box body 2 to a square pipe 17 under the action of self suction, but also can enable the couplant to have certain pressure, a spray head 18 can conveniently atomize and spray the couplant out, a water inlet of the water pump 6 is screwed with one end of a water inlet pipe 7, the other end of the water inlet pipe 7 is screwed with the central position of the bottom end of the rear side of the box body 2, the water inlet pipe 7 is installed at the bottom of an inner cavity of the box body 2, the couplant in the box body 2 can be extracted to the maximum extent through the water;
the rotating mechanism comprises a bottom plate 9, a groove body 10, a first speed reducing motor 11, a supporting plate 12, a rotating shaft 13, a roller 14, a belt pulley 15, a belt 16, a square pipe 17 and a spray head 18;
the bottom end of a bottom plate 9 is welded with the top ends of supporting legs 5, a groove body 10 is arranged on the upper surface of the bottom plate 9, the width of the groove body 10 is larger than the maximum width of two rollers 14, so that the dripping couplant can be conveniently collected, a base is welded at the rear end of the right side of the bottom plate 9, the top end of the base is in screw connection with a first speed reducing motor 11, the first speed reducing motor 11 is electrically connected with a controller 3, supporting plates 12 are welded at the left side and the right side of the top end of the bottom plate 9, the front side and the rear side of the inner bottom end of each supporting plate 12 are rotatably connected with rotating shafts 13 through bearings, the outer walls of the rotating shafts 13 are in interference fit with the inner rings of the bearings, the outer rings of the bearings are fixedly connected with the inner sides of the supporting plates 12, the rollers 14 are in interference fit with the outer walls of the rotating shafts 13, steel pipes with detection, the right side wall of a supporting plate 12 extending out of the right side from the right side of a rotating shaft 13 positioned on the rear side is locked and fixed with the output end of a first speed reducing motor 11 through a coupler, the left side walls of the supporting plate 12 extending out of the left side from the left side of the rotating shaft 13 are connected with belt pulleys 15 in a key mode, the two belt pulleys 15 are connected in a rotating mode through belts 16, the two belt pulleys 15 can rotate synchronously through the connection of the belts 16, the belts 16 are triangular belts, the transmission effect of the belts 16 is improved, a square pipe 17 is installed on the rear side of the top end of the inner side of the supporting plate 12, a water outlet pipe 8 is in threaded connection with the center of the rear side of the square pipe 17, a plurality of spray heads 18 are in threaded connection with the front side of the square;
the moving mechanism comprises a shell 19, an ultrasonic flaw detector 20, a second speed reducing motor 21, a lead screw 22, a guide rod 23 and a slide block 24;
the bottom end of the shell 19 is connected with the top end of the supporting plate 12 through a screw, the ultrasonic flaw detector 20 is connected with the top end center position of the shell 19 through a screw, the right rear end of the shell 19 is connected with a second speed reducing motor 21 through a screw, the second speed reducing motor 21 is electrically connected with the controller 3, the output end of the second speed reducing motor 21 extends out of the right inner wall of the shell 19 and is locked and fixed with one end of a lead screw 22 through a coupler, when the lead screw 22 rotates clockwise or anticlockwise, the slide block 24 can horizontally move leftwards or rightwards through the thread rotating force of the lead screw 22 under the guiding action of a guide rod 23, the other end of the lead screw 22 is rotatably connected with the left side of the inner cavity of the shell 19 through a bearing, the inner ring of the bearing is in interference fit with the left side of the outer wall of the lead screw 22, the outer ring of the bearing is fixedly connected with the, the slider 24 is prevented from rotating when moving, the slider 24 sleeved with the outer wall of the guide rod 23 is screwed on the right side of the outer wall of the lead screw 22, and the inner cavity of the slider 24 extending out of the shell 19 at the front side is connected with a height adjusting mechanism through a screw.
The following electric devices have the following types and functions:
the controller 3: the model is MAM880, which is used for controlling the synchronous start or stop of the water pump 6, the first reducing motor 11 and the second reducing motor 21, and can realize the automatic control of steel pipe flaw detection;
and (6) a water pump: the model is MHI803, and the couplant in the box body 2 can be conveyed into the square pipe 17 from bottom to top under the action of self suction;
first reduction motor 11: the model is HP-4P and is used for driving the rotating shaft 13 to rotate clockwise;
ultrasonic flaw detector 20: the model is CT-920 and is used for detecting the defects of cracks, layering and the like on the wall of the steel pipe;
second reduction motor 21: is a positive and negative rotation motor with the model number of R107R77 and is used for driving the lead screw 22 to rotate clockwise or anticlockwise;
the probe 31: the model number is 5P14, and the ultrasonic flaw detector 20 supplies power to transmit ultrasonic waves to the steel pipe.
Preferably, the height-adjusting mechanism further comprises a top plate 25, a screw 26, a rocking handle 27, a rectangular plate 28, a first connecting rod 29, a second connecting rod 30 and a probe 31;
the rear side of the top plate 25 is connected with the front side of the sliding block 24 through a screw, the top end of the top plate 25 is connected with a screw 26 in a threaded manner, when the screw 26 rotates clockwise or anticlockwise, the screw 26 can drive the rectangular plate 28 to move upwards or downwards, the top end of the screw 26 is welded with the bottom end of the rocking handle 27, the bottom end of the screw 26 extends out of the lower surface of the top plate 25 and is rotatably connected with the top center position of the rectangular plate 28 through a bearing, the outer wall of the screw 26 is in interference fit with an inner ring of the bearing, an outer ring of the bearing is fixedly connected with the top center position of the rectangular plate 28, supporting seats are respectively arranged at the left and right center positions of the bottom end of the top plate 25, an inner cavity of each supporting seat is connected with one end of a first connecting rod 29 through a pin shaft, supporting seats are respectively arranged at the left and right center positions of the top end of the rectangular plate, the probe 31 is screwed to the bottom end of the rectangular plate 28, and the probe 31 is electrically connected to the ultrasonic flaw detector 20, and transmits ultrasonic waves to the steel pipe to be detected through the probe 31.
Preferably, the bottom end of the inner cavity of the tank body 10 is inclined downward from back to front, and the tank body 10 can make the couplant flow to the front side by using the inclined surface of the tank body, so that the couplant can flow into the tank body 2 to be collected.
Preferably, a plurality of spray heads 18 are arranged on the front side of the square pipe 17 from left to right at intervals, the distance between every two adjacent spray heads 18 is 20cm, and the couplant can be uniformly sprayed on the steel pipe through the arrangement of the plurality of spray heads 18.
Preferably, the first link 29 and the second link 30 are the same in length, and when the rectangular plate 28 moves upward or downward, the distance between the rectangular plate 28 and the top plate 25 becomes smaller or larger, the included angle between the two sets of first links 29 and second links 30 on the left and right sides will become smaller or larger simultaneously, and the rectangular plate 28 can be lifted or lowered horizontally by the cooperation of the first link 29 and the second link 30.
An ultrasonic flaw detection method of an ultrasonic flaw detection apparatus includes the steps of,
firstly, a steel pipe to be detected is placed between two rollers 14, the height of a probe 31 is adjusted according to the outer diameter of the steel pipe, a rocking handle 27 is rotated clockwise or anticlockwise, a rectangular plate 28 drives the probe 31 to move upwards or downwards under the driving of a screw 26, the distance between the probe 31 and the steel pipe meets the requirement of flaw detection, and a start button of an ultrasonic flaw detector 20 is pressed to enable the ultrasonic flaw detector 20 to work;
step two, the water pump 6, the first reducing motor 11 and the second reducing motor 21 are controlled to be started through the controller 3, the couplant in the box body 2 is conveyed into the square pipe 17 by the water pump 6 under the action of self suction, the couplant is atomized and sprayed onto the steel pipe through the spray head 18, the dripping couplant is collected by the groove body 10 and can flow into the box body 2 along the inclined plane of the groove body 10, the cyclic use of the couplant is realized, the rotating shaft 13 and the belt pulley 15 on the rear side are driven by the first reducing motor 11 to rotate clockwise, the belt pulley 15 and the rotating shaft 13 on the front side synchronously rotate clockwise under the conduction action of the belt 16, so that the two rollers 14 simultaneously rotate clockwise, and the steel pipe rotates clockwise under the rolling action of the rollers 14;
and thirdly, the second speed reducing motor 21 drives the screw rod 22 to rotate clockwise or anticlockwise, the thread rotating force of the screw rod 22 can drive the sliding block 24 to move leftwards or rightwards under the guiding action of the guide rod 23, so that the sliding block 24 can drive the probe 31 on the height adjusting mechanism to move leftwards or rightwards, and a worker can check the quality of the steel pipe according to the image displayed on the ultrasonic flaw detector 20.
Preferably, in the first step, the specific step of enabling the distance from the probe 31 to the steel pipe to meet the flaw detection requirement includes that when the screw 26 rotates clockwise or counterclockwise, due to the engagement of the screw 26 with the threads of the top plate 25, the screw 26 drives the rectangular plate 28 to move up or down, and due to the same length of the first connecting rod 29 and the second connecting rod 30, the included angle between the two sets of the first connecting rod 29 and the second connecting rod 30 on the left and right sides is enabled to be increased or decreased, the rectangular plate 28 is limited by the cooperation of the first connecting rod 29 and the second connecting rod 30, the rectangular plate 28 can drive the probe 31 to move vertically up or down until the linear distance from the probe 31 to the outer wall of the steel pipe meets the coupling flaw detection requirement, and the rotation of the rocking handle 27 is stopped, so that the height adjustment of the probe 31 is achieved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. An ultrasonic flaw detection device, includes base (1), its characterized in that: the top end of the base (1) is connected with a box body (2) through a screw, the right end of the front side of the box body (2) is connected with a controller (3) through a screw, a valve (4) is connected to the center of the bottom end of the front side of the box body (2) in a threaded mode, and supporting legs (5) are welded to four corners of the top end of the base (1);
the top end of the supporting leg (5) is welded with a rotating mechanism, a water pump (6) is connected to the central position of the rear side of the box body (2) through a screw, the water pump (6) is electrically connected with the controller (3), a water inlet of the water pump (6) is connected with one end of a water inlet pipe (7) in a threaded mode, the other end of the water inlet pipe (7) is connected with the central position of the bottom end of the rear side of the box body (2) in a threaded mode, a water outlet of the water pump (6) is connected with one end of a water outlet pipe (8) in a threaded mode, and the other end;
the rotating mechanism comprises a bottom plate (9), a groove body (10), a first speed reducing motor (11), a supporting plate (12), a rotating shaft (13), a roller (14), a belt pulley (15), a belt (16), a square tube (17) and a spray head (18);
the bottom of bottom plate (9) and the top welding of supporting leg (5), the upper surface at bottom plate (9) is seted up to cell body (10), the right side rear end welding of bottom plate (9) has the base, the top and the first gear motor (11) screw connection of base, and first gear motor (11) and controller (3) electric connection, backup pad (12) have all been welded to the top left and right sides of bottom plate (9), both sides are connected with pivot (13) through the bearing rotation around the inboard bottom of backup pad (12), the outer wall of pivot (13) and the inner ring interference fit of bearing, the outer loop of bearing and the inboard fixed connection of backup pad (12), the outer wall interference fit of pivot (13) has cylinder (14), be located the rear side the right side of pivot (13) extend the right side the right side wall of backup pad (12) pass through the shaft coupling and the output locking of first gear motor (11) is fixed, the left side wall of a supporting plate (12) located on the left side extends out of the left sides of the two rotating shafts (13) and is connected with a belt pulley (15) in a key mode, the two belt pulleys (15) are connected in a rotating mode through a belt (16), a square pipe (17) is installed on the rear side of the top end of the inner side of the supporting plate (12), a water outlet pipe (8) is in threaded connection with the center of the rear side of the square pipe (17), a plurality of spray heads (18) are in threaded connection with the front side of the square pipe (17) from left to right, and a moving mechanism is connected to the top end of;
the moving mechanism comprises a shell (19), an ultrasonic flaw detector (20), a second speed reduction motor (21), a lead screw (22), a guide rod (23) and a slide block (24);
the bottom of casing (19) and the top end screwed connection of backup pad (12), ultrasonic flaw detector (20) screwed connection is put at the top center of casing (19), the right side rear end and the second gear motor (21) screwed connection of casing (19), and second gear motor (21) and controller (3) electric connection, the output of second gear motor (21) extends the right inner wall of casing (19) and passes through the shaft coupling and the one end locking of lead screw (22) is fixed, the other end of lead screw (22) is connected through bearing rotation with the inner chamber left side of casing (19), the inner ring of bearing and the outer wall left side interference fit of lead screw (22), the outer loop of bearing and the inner chamber left side fixed connection of casing (19), guide arm (23) are installed in the inner chamber front side of casing (19) along left and right directions, the outer wall right side spiro union of lead screw (22) has slider (24) that cup joints with the outer wall of guide arm (23), the inner cavity screw extending out of the shell (19) at the front side of the sliding block (24) is connected with a height adjusting mechanism;
the height adjusting mechanism comprises a top plate (25), a screw (26), a rocking handle (27), a rectangular plate (28), a first connecting rod (29), a second connecting rod (30) and a probe (31);
the rear side of the top plate (25) is connected with a front side screw of the sliding block (24), the top end of the top plate (25) is connected with a screw rod (26) in a threaded mode, the top end of the screw rod (26) is welded with the bottom end of the rocking handle (27), the bottom end of the screw rod (26) extends out of the lower surface of the top plate (25) and is rotatably connected with the top end center position of the rectangular plate (28) through a bearing, the outer wall of the screw rod (26) is in interference fit with the inner ring of the bearing, the outer ring of the bearing is fixedly connected with the top end center position of the rectangular plate (28), supporting seats are installed at the center positions of the left side and the right side of the bottom end of the top plate (25), an inner cavity of each supporting seat is connected with one end of a first connecting rod (29) through a pin shaft, supporting seats are installed at the center positions of the left side and the, the other end of the second connecting rod (30) is connected with the other end of the first connecting rod (29) through a pin shaft, the probe (31) is connected to the bottom end of the rectangular plate (28) through a screw, and the probe (31) is electrically connected with the ultrasonic flaw detector (20).
2. An ultrasonic testing apparatus according to claim 1, characterized in that: the bottom end of the inner cavity of the tank body (10) is inclined downwards from back to front.
3. An ultrasonic testing apparatus according to claim 1, characterized in that: the plurality of spray heads (18) are arranged on the front side of the square pipe (17) from left to right at intervals, and the distance between every two adjacent spray heads (18) is 20 cm.
4. An ultrasonic testing apparatus according to claim 1, characterized in that: the first connecting rod (29) and the second connecting rod (30) are the same in length.
5. The ultrasonic testing method of an ultrasonic testing apparatus according to any one of claims 1 to 4, comprising the steps of,
firstly, a steel pipe to be detected is placed between two rollers (14), the height of a probe (31) is adjusted according to the outer diameter of the steel pipe, a rocking handle (27) is rotated clockwise or anticlockwise, the rectangular plate (28) drives the probe (31) to move upwards or downwards under the drive of a screw (26), the distance between the probe (31) and the steel pipe meets the flaw detection requirement, and a starting button of an ultrasonic flaw detector (20) is pressed to enable the ultrasonic flaw detector (20) to work;
step two, the water pump (6), the first reducing motor (11) and the second reducing motor (21) are controlled to be started through the controller (3), the couplant in the box body (2) is conveyed into the square pipe (17) by the water pump (6) under the action of self suction, the couplant is atomized and sprayed on the steel pipe through the spray head (18), the dripping couplant is collected by the groove body (10), the couplant can flow into the box body (2) along the inclined plane of the groove body (10), the recycling of the couplant is realized, the rotating shaft (13) and the belt pulley (15) which are positioned on the rear side are driven by the first reducing motor (11) to rotate clockwise, the belt pulley (15) positioned at the front side and the rotating shaft (13) synchronously rotate clockwise under the conduction action of the belt (16), so that the two rollers (14) rotate clockwise simultaneously, and the steel pipe rotates clockwise under the rolling action of the rollers (14);
and thirdly, the second speed reducing motor (21) drives the lead screw (22) to rotate clockwise or anticlockwise, the thread rotating force of the lead screw (22) can drive the sliding block (24) to move leftwards or rightwards under the guiding action of the guide rod (23), so that the sliding block (24) can drive the probe (31) on the height adjusting mechanism to move leftwards or rightwards, and a worker can check the quality of the steel pipe according to the image displayed on the ultrasonic flaw detector (20).
6. The ultrasonic testing method of an ultrasonic testing apparatus according to claim 5, characterized in that: the concrete step of enabling the distance from the probe (31) to the steel pipe to meet the flaw detection requirement in the first step is that when the screw (26) rotates clockwise or anticlockwise, due to the fact that the screw (26) is meshed with the threads of the top plate (25), the screw (26) drives the rectangular plate (28) to move upwards or downwards, due to the fact that the first connecting rod (29) and the second connecting rod (30) are the same in length, included angles between the two groups of first connecting rods (29) and the second connecting rod (30) on the left side and the right side are made to be smaller or larger, the rectangular plate (28) is limited through the matching of the first connecting rod (29) and the second connecting rod (30), the rectangular plate (28) can drive the probe (31) to vertically move upwards or downwards until the linear distance from the probe (31) to the outer wall of the steel pipe meets the coupling flaw detection requirement, the rotation of the rocking handle (27) is stopped, and the height adjustment of the probe (.
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| CN117074640B (en) * | 2023-10-17 | 2023-12-15 | 山东帝盟重工机械有限公司 | Gearbox gear shaft flaw detection mechanism |
| CN117388367B (en) * | 2023-12-11 | 2024-03-19 | 广东石油化工学院 | Intelligent material structure damage detection device |
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