阅读说明：本技术 一种具有清洁功能的超声波探伤仪 (Ultrasonic flaw detector with cleaning function ) 是由 魏春 于 2021-08-23 设计创作，主要内容包括：本发明涉及一种具有清洁功能的超声波探伤仪,包括主体、显示器、检测头、连接板、连接线和若干按钮,还包括清洁机构和防护机构,所述防护机构包括保护箱、气囊、充气组件和若干第一弹簧,所述清洁机构包括清洁板、转动组件和辅助组件,该具有清洁功能的超声波探伤仪通过保护机构,实现了保护检测头的功能,使得检测头不会与其他物品发生碰撞,从而减小了检测头损坏的几率,提高了设备的安全性,通过清洁机构,实现了清洁检测头的功能,使得灰尘杂质不会残留在检测头上,从而不会对下一次的探伤工作产生影响,从而提高了设备的可靠性。(The invention relates to an ultrasonic flaw detector with a cleaning function, which comprises a main body, a display, a detection head, a connecting plate, a connecting wire, a plurality of buttons, a cleaning mechanism and a protection mechanism, wherein the protection mechanism comprises a protection box, an air bag, an inflation assembly and a plurality of first springs, the cleaning mechanism comprises a cleaning plate, a rotating assembly and an auxiliary assembly, the ultrasonic flaw detector with the cleaning function realizes the function of protecting the detection head through the protection mechanism, so that the detection head cannot collide with other objects, the probability of damage of the detection head is reduced, the safety of equipment is improved, the function of cleaning the detection head is realized through the cleaning mechanism, dust and impurities cannot remain on the detection head, the next flaw detection work cannot be influenced, and the reliability of the equipment is improved.)

1. An ultrasonic flaw detector with a cleaning function comprises a main body (1), a display (2), a detection head (6), a connecting plate (5), a connecting wire (4) and a plurality of buttons (3), wherein the display (2) and the buttons (3) are arranged on one side of the main body (1), one end of the detection head (6) is connected with the connecting plate (5), one end of the detection head (6) is connected with the main body (1) through the connecting wire (4), and a PLC is arranged inside the main body (1), and the ultrasonic flaw detector is characterized by further comprising a cleaning mechanism and a protection mechanism, wherein the cleaning mechanism is connected with the protection mechanism, and the cleaning mechanism and the protection mechanism are arranged on one side of the main body (1);

the protection mechanism comprises a protection box (7), an air bag (8), an inflation assembly and a plurality of first springs (9), the protection box (7) is arranged on one side of the main body (1), an opening is formed in the upper portion of the protection box (7) and matched with the detection head (6), the connecting plate (5) is abutted to the upper portion of the protection box (7), the air bag (8) is annular in shape, the outer ring of the air bag (8) is connected with the inner wall of the protection box (7), the first springs (9) are circumferentially and uniformly arranged inside the air bag (8), two ends of each first spring (9) are respectively connected with the inner walls of two sides of the air bag (8), two exhaust holes are formed in the upper portion of the air bag (8), the inflation assembly is arranged below the protection box (7), the inflation assembly is connected with the air bag (8), and the inflation assembly is connected with a cleaning mechanism, a valve is arranged in the exhaust hole and is electrically connected with the PLC;

the inflation assembly comprises a driving unit, an inflation box (11), two connecting pipes (10), two air inlet pipes (12) and two magnet plates (15), the inflation box (11) is arranged below the protection box (7), the magnet plates (15) are arranged inside the inflation box (11), the magnet plates (15) are connected with the inner wall of the inflation box (11) in a sealing and sliding mode, the magnet plates (15) are connected with a cleaning mechanism, the driving unit is arranged between the two magnet plates (15), the two air inlet pipes (12) are respectively arranged on two sides of the lower portion of the inflation box (11), the two connecting pipes (10) are respectively arranged on two sides of the upper portion of the inflation box (11), the air bag (8) is communicated with the interior of the inflation box (11) through the connecting pipes (10), the air inlet pipes (12) are communicated with the interior of the inflation box (11), and first one-way valves are respectively arranged in the air inlet pipes (12) and the connecting pipes (10), the first one-way valve is electrically connected with the PLC;

the cleaning mechanism comprises a cleaning plate (19), a rotating assembly and an auxiliary assembly, wherein a brush is arranged on one side of the cleaning plate (19), the other side of the cleaning plate (19) is connected with the rotating assembly, the rotating assembly box auxiliary assembly is arranged at the bottom in the protective box (7), the rotating assembly is connected with the magnet plate (15), and the auxiliary assembly is connected below the cleaning plate (19);

the auxiliary assembly comprises a transmission unit, an auxiliary box (27), a through pipe (28) and a plurality of rotating plates (26), the bottom of the auxiliary box (27) is arranged in the protection box (7), the rotating plates (26) are arranged inside the auxiliary box (27), the rotating plates (26) are connected with the transmission unit, the transmission unit is connected with the lower portion of the cleaning plate (19), one side of the auxiliary box (27) is provided with an air inlet hole, the auxiliary box (27) is communicated with the outside of the main body (1) through the through pipe (28), a second one-way valve is arranged in the air inlet hole and in the through pipe (28), and the second one-way valve is electrically connected with the PLC.

2. The ultrasonic flaw detector with a cleaning function according to claim 1, wherein the driving unit includes an electromagnet (13) and two second springs (14), the electromagnet (13) is disposed between two magnet plates (15), one ends of the two second springs (14) are connected to both sides of the electromagnet (13), the other ends of the two second springs (14) are connected to the sides of the two drive plates adjacent to each other, respectively, and the electromagnet (13) is electrically connected to the PLC.

3. The ultrasonic flaw detector with a cleaning function according to claim 1, wherein the inflation assembly further comprises two guide rods (16), the two guide rods (16) are respectively connected with the inner walls of the two sides of the inflation box (11), the magnet plate (15) is provided with two small holes, the two guide rods (16) respectively penetrate through the two small holes, and the peripheries of the guide rods (16) are in sealed sliding connection with the inner walls of the small holes.

4. The ultrasonic flaw detector having a cleaning function according to claim 1, the rotating assembly comprises a first bearing, a torsion spring (20), a ball screw pair (18), two convex blocks and two pull ropes (17), the first bearing is arranged at the bottom in the protective box (7), two ends of a screw rod of the ball screw pair (18) are respectively connected with an inner ring of the first bearing and the cleaning plate (19), the two convex blocks are symmetrically arranged relative to the axis of the screw rod of the ball screw pair (18), one side of the convex block is connected with the outer ring of the nut of the ball screw pair (18), one end of each of the two pull ropes (17) is respectively connected with the other side of the two convex blocks, the other end of each of the two pull ropes (17) is respectively connected with the side, close to each other, of the two magnet plates (15), and two ends of the torsion spring (20) are respectively connected with the outer ring of the first bearing and the periphery of the screw of the ball screw pair (18).

5. The ultrasonic flaw detector with the cleaning function according to claim 4, wherein the rotating assembly further comprises two telescopic rods (21), one ends of the two telescopic rods (21) are respectively connected with the lower parts of the two lugs, and the other ends of the telescopic rods (21) are connected with the bottom inside the protection box (7).

6. The ultrasonic flaw detector having a cleaning function according to claim 1, the transmission unit comprises a first bevel gear (23), a second bevel gear (24), a second bearing, a transmission shaft (25) and two connecting rods (22), a perforation is arranged on one side of the auxiliary box (27) far away from the air inlet hole, the outer ring of the second bearing is connected with the inner wall of the perforation, the periphery of the transmission shaft (25) is connected with the inner ring of the second bearing, one end of the transmission shaft (25) is connected with the rotating plate (26), the other end of the transmission shaft (25) passes through the through hole to be connected with a second bevel gear (24), the first bevel gear (23) is meshed with the second bevel gear (24), a through hole is arranged on the first bevel gear (23), the two connecting rods (22) are symmetrically arranged around the axis of the through hole, two ends of the connecting rod (22) are respectively connected with the cleaning plate (19) and the first bevel gear (23).

Technical Field

The invention relates to the field of flaw detection equipment, in particular to an ultrasonic flaw detector with a cleaning function.

Background

The ultrasonic flaw detector is a portable industrial nondestructive flaw detector, and can quickly, conveniently, nondestructively and accurately detect, position, evaluate and diagnose various defects (cracks, looseness, air holes, inclusions and the like) in a workpiece. The device can be used in a laboratory and an engineering field. The method is widely applied to industries such as boilers, pressure vessels, aerospace, aviation, electric power, petroleum, chemical engineering, marine petroleum, pipelines, war industry, ship manufacturing, automobiles, mechanical manufacturing, metallurgy, metal processing industry, steel structures, railway traffic, nuclear power, colleges and universities.

The detection head of the existing ultrasonic flaw detector is exposed outside, so that the probability of collision between the detection head and other objects is easily increased, the damage of the detection head is easily caused, the detection work is influenced, the reliability of the existing ultrasonic flaw detector is reduced, and moreover, when the detection head of the existing ultrasonic flaw detector detects, impurity and dust on a workpiece are easily adhered to the detection head, if the cleaning is not timely carried out, the influence on the next flaw detection precision is easily caused, and the safety and reliability of the existing ultrasonic flaw detector are reduced.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the ultrasonic flaw detector with the cleaning function is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: an ultrasonic flaw detector with a cleaning function comprises a main body, a display, a detection head, a connecting plate, a connecting wire and a plurality of buttons, wherein the display and the buttons are arranged on one side of the main body;

the protection mechanism comprises a protection box, an air bag, an inflation assembly and a plurality of first springs, the protection box is arranged on one side of the main body, openings are formed in the upper portion of the protection box and are matched with the detection head, the connecting plate abuts against the upper portion of the protection box, the air bag is annular, the outer ring of the air bag is connected with the inner wall of the protection box, the first springs are uniformly arranged in the air bag in the circumferential direction, two ends of the first springs are respectively connected with the inner walls of two sides of the air bag, two exhaust holes are formed in the upper portion of the air bag, the inflation assembly is arranged below the protection box and is connected with the air bag, the inflation assembly is connected with the cleaning mechanism and is internally provided with a valve, and the valve is electrically connected with the PLC;

the inflatable assembly comprises a driving unit, an inflatable box, two connecting pipes, two air inlet pipes and two magnet plates, the inflatable box is arranged below the protective box, the magnet plates are arranged inside the inflatable box, the magnet plates are connected with the inner wall of the inflatable box in a sealing and sliding mode, the magnet plates are connected with the cleaning mechanism, the driving unit is arranged between the two magnet plates, the two air inlet pipes are respectively arranged on two sides below the inflatable box, the two connecting pipes are respectively arranged on two sides above the inflatable box, the air bag is communicated with the inside of the inflatable box through the connecting pipes, the air inlet pipes are communicated with the inside of the inflatable box, first check valves are respectively arranged in the air inlet pipes and the connecting pipes, and the first check valves are electrically connected with the PLC;

the cleaning mechanism comprises a cleaning plate, a rotating assembly and an auxiliary assembly, wherein a brush is arranged on one side of the cleaning plate, the other side of the cleaning plate is connected with the rotating assembly, the rotating assembly box auxiliary assembly is arranged at the bottom in the protective box, the rotating assembly is connected with the magnet plate, and the lower part of the cleaning plate is connected with the auxiliary assembly;

the auxiliary assembly comprises a transmission unit, an auxiliary box, a through pipe and a plurality of rotating plates, the auxiliary box is arranged at the bottom of the protective box, the rotating plates are arranged inside the auxiliary box and connected with the transmission unit, the transmission unit is connected with the lower portion of the cleaning plate, an air inlet hole is formed in one side of the auxiliary box, the auxiliary box is communicated with the outside of the main body through the through pipe, a second one-way valve is arranged in the air inlet hole and the through pipe, and the second one-way valve is electrically connected with the PLC.

Preferably, in order to drive the magnet plates to move, the driving unit comprises an electromagnet and two second springs, the electromagnet is arranged between the two magnet plates, one ends of the two second springs are respectively connected with two sides of the electromagnet, the other ends of the two second springs are respectively connected with one sides, close to each other, of the two driving plates, and the electromagnet is electrically connected with the PLC.

Preferably, in order to realize the function of guiding the magnet plate, the inflation assembly further comprises two guide rods, the two guide rods are respectively connected with the inner walls of the two sides of the inflation box, the magnet plate is provided with two small holes, the two guide rods respectively penetrate through the two small holes, and the peripheries of the guide rods are in sealing sliding connection with the inner walls of the small holes.

Preferably, in order to drive the cleaning plate to rotate, the rotating assembly comprises a first bearing, a torsion spring, a ball screw pair, two protrusions and two pull ropes, the first bearing is arranged at the bottom in the protection box, two ends of a screw rod of the ball screw pair are respectively connected with an inner ring of the first bearing and the cleaning plate, the two protrusions are symmetrically arranged about an axis of the screw rod of the ball screw pair, one side of each protrusion is connected with an outer ring of a nut of the ball screw pair, one ends of the two pull ropes are respectively connected with the other sides of the two protrusions, the other ends of the two pull ropes are respectively connected with one sides, close to each other, of the two magnet plates, and two ends of the torsion spring are respectively connected with an outer ring of the first bearing and the outer periphery of the screw rod of the ball screw pair.

Preferably, in order to limit the moving direction of the protruding blocks, the rotating assembly further comprises two telescopic rods, one ends of the two telescopic rods are respectively connected with the lower portions of the two protruding blocks, and the other ends of the telescopic rods are connected with the bottom in the protection box.

Preferably, in order to drive the rotating plate to rotate, the transmission unit comprises a first bevel gear, a second bearing, a transmission shaft and two connecting rods, a through hole is formed in one side, away from the air inlet, of the auxiliary box, the outer ring of the second bearing is connected with the inner wall of the through hole, the periphery of the transmission shaft is connected with the inner ring of the second bearing, one end of the transmission shaft is connected with the rotating plate, the other end of the transmission shaft penetrates through the through hole to be connected with the second bevel gear, the first bevel gear is meshed with the second bevel gear, a through hole is formed in the first bevel gear, the two connecting rods are symmetrically arranged about the axis of the through hole, and two ends of each connecting rod are respectively connected with the cleaning plate and the first bevel gear.

The ultrasonic flaw detector with the cleaning function has the advantages that the function of protecting the detection head is realized through the protection mechanism, so that the detection head cannot collide with other objects, the probability of damage of the detection head is reduced, and the safety of equipment is improved, compared with the existing protection mechanism, the protection mechanism not only realizes the function of fixing the position of the detection head, so that the detection head cannot collide with the inner wall of the protection box, but also can buffer the detection head through the arranged air bag, so that the probability of damage of the detection head due to overlarge vibration is reduced, the safety of the equipment is improved, the function of cleaning the detection head is realized through the cleaning mechanism, dust and impurities cannot remain on the detection head, the influence on next flaw detection work is avoided, the reliability of the equipment is improved, compared with the existing cleaning mechanism, this clean mechanism can also make the inside and outside atmospheric pressure difference that forms of guard box, has promoted the inside leakproofness of guard box for external impurity can not the adhesion on detecting the head again, thereby can not exert an influence to clear quality, thereby has improved the reliability of equipment, and has also improved the stability that detects the head and place in the guard box, makes the rocking that can not make a round trip of detecting the head, thereby can not cause the damage of detecting the head, and the security is higher.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view showing the structure of an ultrasonic flaw detector having a cleaning function according to the present invention;

FIG. 2 is a schematic structural view of a protection mechanism of an ultrasonic flaw detector having a cleaning function according to the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is an enlarged view of portion B of FIG. 2;

in the figure: 1. the automatic cleaning device comprises a main body, a display, a button, a connecting wire, a connecting plate, a detection head, a protection box, an air bag, a first spring, a connecting pipe, an inflation box, an air inlet pipe, an electromagnet, a second spring, a magnet plate, a guide rod, a pull rope, a ball screw pair, a cleaning plate, a torsion spring, a telescopic rod, a connecting rod, a first bevel gear, a second bevel gear, a transmission shaft, a rotating plate, an auxiliary box and a through pipe, wherein the display is 2, the button is 3, the connecting wire is 4, the connecting pipe is 11, the inflation box is 12, the air inlet pipe is 13, the electromagnet is 14, the second spring is 15, the magnet plate is 16, the guide rod is 17, the pull rope is 18, the ball screw pair, the cleaning plate is 19, the torsion spring is 20, the telescopic rod is 21, the connecting rod is 22, the first bevel gear is 23, the second bevel gear is 25, the transmission shaft is 26, the rotating plate is 27, the auxiliary box is 28, and the through pipe is arranged on the main body.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, an ultrasonic flaw detector with a cleaning function comprises a main body 1, a display 2, a detection head 6, a connecting plate 5, a connecting wire 4 and a plurality of buttons 3, wherein the display 2 and the buttons 3 are arranged on one side of the main body 1, one end of the detection head 6 is connected with the connecting plate 5, one end of the detection head 6 is connected with the main body 1 through the connecting wire 4, a PLC is arranged in the main body 1, and the ultrasonic flaw detector further comprises a cleaning mechanism and a protection mechanism, the cleaning mechanism is connected with the protection mechanism, and the cleaning mechanism and the protection mechanism are arranged on one side of the main body 1;

PLCs, i.e., programmable logic controllers, are generally used for the processing of data and the receipt and output of instructions for central control.

This ultrasonic flaw detector with clean function passes through protection mechanism, has realized the function of protection detection head 6 for detect head 6 can not bump with other article, thereby has reduced the probability that detection head 6 damaged, has improved the security of equipment, through clean mechanism, has realized the function of clean detection head 6, makes dust impurity can not remain on detecting head 6, thereby can not exert an influence to next work of detecting a flaw, thereby has improved the reliability of equipment.

As shown in fig. 2, the protection mechanism includes a protection box 7, an airbag 8, an inflation assembly and a plurality of first springs 9, the protection box 7 is arranged on one side of the main body 1, openings are arranged above the protection box 7 and matched with the detection head 6, the connection plate 5 abuts against the protection box 7, the airbag 8 is annular, the outer ring of the airbag 8 is connected with the inner wall of the protection box 7, the first springs 9 are uniformly arranged inside the airbag 8 in the circumferential direction, two ends of the first springs 9 are respectively connected with the inner walls of two sides of the airbag 8, two exhaust holes are arranged above the airbag 8, the inflation assembly is arranged below the protection box 7 and connected with the airbag 8, the inflation assembly is connected with the cleaning mechanism, valves are arranged in the exhaust holes, and the valves are electrically connected with the PLC;

the inflation assembly comprises a driving unit, an inflation box 11, two connecting pipes 10, two air inlet pipes 12 and two magnet plates 15, the inflation box 11 is arranged below the protection box 7, the magnet plates 15 are arranged inside the inflation box 11, the magnet plates 15 are connected with the inner wall of the inflation box 11 in a sealing and sliding mode, the magnet plates 15 are connected with a cleaning mechanism, the driving unit is arranged between the two magnet plates 15, the two air inlet pipes 12 are respectively arranged on two sides below the inflation box 11, the two connecting pipes 10 are respectively arranged on two sides above the inflation box 11, the air bag 8 is communicated with the inside of the inflation box 11 through the connecting pipes 10, the air inlet pipes 12 are communicated with the inside of the inflation box 11, first one-way valves are arranged in the air inlet pipes 12 and the connecting pipes 10, and the first one-way valves are electrically connected with the PLC;

after the flaw detection work is finished, a user puts the detection head 6 into the protection box 7 from the opening to enable the connecting plate 5 to be abutted against the upper side of the protection box 7, the detection head 6 cannot collide with other objects through the shielding of the protection box 7, the probability of damage to the detection head 6 is reduced, the safety of equipment is improved, the driving unit is controlled to work to enable the magnet plates 15 to move back and forth in the inflating box 11, when the two magnet plates 15 move towards the mutually approaching direction, the external air enters the inflating box 11 through the air inlet pipe 12, when the two magnet plates 15 move towards the mutually departing direction, the air in the inflating box 11 can be led into the inside of the air bag 8 through the connecting pipe 10 to enable the air bag 8 to expand, the air bag 8 expands, and the inner ring of the air bag 8 is abutted against the periphery of the detection head 6, thereby realize the fixed function of detecting the head 6 position, make detect head 6 can not collide with the inner wall of guard box 7, also can give the work of detecting head 6 and cushion through the gasbag 8 that sets up simultaneously, thereby reduced and detected the probability that head 6 damaged because of vibrations are too big, thereby the security of equipment has been improved, when gasbag 8 expands, when needs get rid of and detect head 6, can control valve and open, make the inside that the air in the gasbag 8 can discharge into guard box 7, the inside and outside atmospheric pressure difference of guard box 7 has been reduced, convenient to use person will detect head 6 and take out, and the convenience is improved.

As shown in fig. 3-4, the cleaning mechanism comprises a cleaning plate 19, a rotating assembly and auxiliary assemblies, wherein one side of the cleaning plate 19 is provided with a brush, the other side of the cleaning plate 19 is connected with the rotating assembly, the rotating assembly box auxiliary assemblies are all arranged at the bottom in the protective box 7, the rotating assembly is connected with the magnet plate 15, and the auxiliary assemblies are connected below the cleaning plate 19;

the auxiliary assembly includes drive unit, supplementary box 27, siphunculus 28 and a plurality of rotor plate 26, supplementary box 27 sets up the bottom in protection box 7, rotor plate 26 sets up the inside at supplementary box 27, rotor plate 26 is connected with drive unit, drive unit is connected with clean board 19's below, one side of supplementary box 27 is equipped with the inlet port, supplementary box 27 passes through the outside intercommunication of siphunculus 28 with main part 1, all be equipped with the second check valve in the inlet port and the siphunculus 28, the second check valve is connected with the PLC electricity.

When the magnet plate 15 moves, the rotating assembly is driven to work, so that the function of back and forth rotation of the cleaning plate 19 can be realized, the detection head 6 can be cleaned through the abutting of the brush and the detection head 6, dust and impurities cannot remain on the detection head 6, and the next flaw detection work cannot be influenced, so that the reliability of the equipment is improved, when the cleaning plate 19 rotates, the transmission unit can be driven to work, the rotating plate 26 rotates, so that the flow rate of air can be accelerated, the air inside the protection box 7 enters the inside of the protection box 7 through the air inlet hole and is discharged through the through pipe 28, the air pressure inside the protection box 7 is reduced, the air pressure difference is formed inside and outside the protection box 7, so that the connecting plate 5 can be firmly abutted against the protection box 7, the sealing performance inside the protection box 7 is improved, and the outside air cannot enter the inside of the protection box 7, thereby make impurity can not the adhesion on detecting head 6 again to can not exert an influence to clear quality, thereby improve the reliability of equipment, and also improved and detected head 6 and placed the stability in protective housing 7, make and detect head 6 and can not make a round trip rock, thereby can not cause the damage that detects head 6, the security is higher.

Preferably, in order to drive the magnet plates 15 to move, the driving unit includes an electromagnet 13 and two second springs 14, the electromagnet 13 is disposed between the two magnet plates 15, one end of each of the two second springs 14 is connected to both sides of the electromagnet 13, the other end of each of the two second springs 14 is connected to one side of each of the two driving plates, the electromagnet 13 is electrically connected to the PLC.

When the air bag 8 needs to be inflated, the electromagnet 13 is controlled to be electrified to generate a force repelling the magnet plate 15, so that the magnet plate 15 moves towards the direction far away from the electromagnet 13, the second spring 14 is stretched, the two magnet plates 15 move towards the directions far away from each other, air in the inflating box 11 can be led into the air bag 8 through the connecting pipe 10, the air bag 8 is expanded, then the electromagnet 13 is controlled to be powered off, under the action of the restoring force of the second spring 14, the two magnet plates 15 move towards the directions close to each other, so that outside air enters the inflating box 11 through the air inlet pipe 12, the function of inflating the air bag 8 can be realized by controlling the electromagnet 13 to be powered on and off continuously, the air bag 8 is expanded, the inner ring of the air bag 8 is abutted against the periphery of the detection head 6, and the function of fixing the position of the detection head 6 is realized, make and detect head 6 and the inner wall of guard box 7 and lean on to reduced the probability that detects head 6 and damage, also can give the work of detecting head 6 and cushion through the gasbag 8 that sets up simultaneously, thereby reduced the probability that detects head 6 and damage, improved the security of equipment.

Preferably, in order to achieve the function of guiding the magnet plate 15, the inflation assembly further comprises two guide rods 16, the two guide rods 16 are respectively connected with the inner walls of the two sides of the inflation box 11, the magnet plate 15 is provided with two small holes, the two guide rods 16 respectively penetrate through the two small holes, and the peripheries of the guide rods 16 are in sealed sliding connection with the inner walls of the small holes.

Preferably, in order to drive the cleaning plate 19 to rotate, the rotating assembly includes a first bearing, a torsion spring 20, a ball screw pair 18, two protrusions and two pull ropes 17, the first bearing is disposed at the bottom inside the protective box 7, two ends of a screw rod of the ball screw pair 18 are respectively connected with an inner ring of the first bearing and the cleaning plate 19, the two protrusions are symmetrically disposed about an axis of the screw rod of the ball screw pair 18, one side of the protrusion is connected with an outer ring of a nut of the ball screw pair 18, one ends of the two pull ropes 17 are respectively connected with the other sides of the two protrusions, the other ends of the two pull ropes 17 are respectively connected with one sides of the two magnet plates 15 close to each other, and two ends of the torsion spring 20 are respectively connected with an outer ring of the first bearing and an outer periphery of the screw rod of the ball screw pair 18.

Preferably, in order to limit the moving direction of the projection, the rotating assembly further comprises two telescopic rods 21, one ends of the two telescopic rods 21 are respectively connected with the lower parts of the two projections, and the other ends of the telescopic rods 21 are connected with the bottom in the protection box 7.

Preferably, in order to drive the rotating plate 26 to rotate, the transmission unit includes a first bevel gear 23, a second bevel gear 24, a second bearing, a transmission shaft 25 and two connecting rods 22, a through hole is formed in one side of the auxiliary box 27, which is away from the air inlet hole, an outer ring of the second bearing is connected with an inner wall of the through hole, an outer periphery of the transmission shaft 25 is connected with an inner ring of the second bearing, one end of the transmission shaft 25 is connected with the rotating plate 26, the other end of the transmission shaft 25 passes through the through hole to be connected with the second bevel gear 24, the first bevel gear 23 is engaged with the second bevel gear 24, a through hole is formed in the first bevel gear 23, the two connecting rods 22 are symmetrically arranged about an axis of the through hole, and two ends of the connecting rods 22 are respectively connected with the cleaning plate 19 and the first bevel gear 23.

When the two magnet plates 15 move in the direction away from each other, the nut of the ball screw pair 18 is driven by the pull rope 17 to move downwards, the screw of the ball screw pair 18 is rotated, the torsion spring 20 is deformed, the cleaning plate 19 is driven to rotate, when the two magnet plates 15 move in the direction close to each other, the screw of the ball screw pair 18 can be driven by the torsion spring 20 to rotate in the reverse direction, so that the function of back-and-forth rotation of the cleaning plate 19 is realized, the detection head 6 can be cleaned by the leaning of the brush and the detection head 6, so that dust and impurities can not remain on the detection head 6, and the next flaw detection work can not be influenced, thereby improving the reliability of the equipment, when the cleaning plate 19 rotates, the first bevel gear 23 can be driven to rotate by the connecting rod 22, and the first bevel gear 23 is meshed with the second bevel gear 24, the second bevel gear 24 is rotated to drive the transmission shaft 25 to rotate, the rotating plate 26 is rotated to accelerate the flow rate of air, the air in the protective box 7 enters the protective box 7 through the air inlet hole and is discharged through the through pipe 28, the air pressure in the protective box 7 is reduced, and the air pressure difference is formed between the inside and the outside of the protective box 7, so that the connecting plate 5 can be firmly abutted against the protective box 7, the sealing property in the protective box 7 is improved, the external air cannot enter the protective box 7, impurities cannot be adhered to the detection head 6, the cleaning quality is not affected, the reliability of the equipment is improved, the stability of the detection head 6 placed in the protective box 7 is also improved, the detection head 6 cannot shake back and forth, and the damage of the detection head 6 is avoided, the safety is higher.

After the flaw detection work is finished, a user puts the detection head 6 into the protection box 7 from the opening to enable the connecting plate 5 to be abutted against the upper side of the protection box 7, the detection head 6 cannot collide with other objects through the shielding of the protection box 7, the probability of damage to the detection head 6 is reduced, the safety of equipment is improved, the driving unit is controlled to work to enable the magnet plates 15 to move back and forth in the inflating box 11, when the two magnet plates 15 move towards the mutually approaching direction, the external air enters the inflating box 11 through the air inlet pipe 12, when the two magnet plates 15 move towards the mutually departing direction, the air in the inflating box 11 can be led into the inside of the air bag 8 through the connecting pipe 10 to enable the air bag 8 to expand, the air bag 8 expands, and the inner ring of the air bag 8 is abutted against the periphery of the detection head 6, thereby realize the fixed function of detecting the head 6 position for detect the head 6 and can not bump with the inner wall of guard box 7, also can give the work of detecting head 6 and cushion through the gasbag 8 that sets up simultaneously, thereby reduced and detected the head 6 because of vibrations the too big probability of damaging, thereby improved the security of equipment. When the magnet plate 15 moves, the rotating assembly is driven to work, so that the function of back and forth rotation of the cleaning plate 19 can be realized, the detection head 6 can be cleaned through the abutting of the brush and the detection head 6, dust and impurities cannot remain on the detection head 6, and the next flaw detection work cannot be influenced, so that the reliability of the equipment is improved, when the cleaning plate 19 rotates, the transmission unit can be driven to work, the rotating plate 26 rotates, so that the flow rate of air can be accelerated, the air inside the protection box 7 enters the inside of the protection box 7 through the air inlet hole and is discharged through the through pipe 28, the air pressure inside the protection box 7 is reduced, the air pressure difference is formed inside and outside the protection box 7, so that the connecting plate 5 can be firmly abutted against the protection box 7, the sealing performance inside the protection box 7 is improved, and the outside air cannot enter the inside of the protection box 7, thereby make impurity can not the adhesion on detecting head 6 again to can not exert an influence to clear quality, thereby improve the reliability of equipment, and also improved and detected head 6 and placed the stability in protective housing 7, make and detect head 6 and can not make a round trip rock, thereby can not cause the damage that detects head 6, the security is higher.

Compared with the prior art, the ultrasonic flaw detector with the cleaning function realizes the function of protecting the detection head 6 through the protection mechanism, so that the detection head 6 cannot collide with other objects, the probability of damage to the detection head 6 is reduced, and the safety of the equipment is improved, compared with the existing protection mechanism, the protection mechanism not only realizes the function of fixing the position of the detection head 6, so that the detection head 6 cannot collide with the inner wall of the protection box 7, but also can buffer the detection head 6 through the arranged air bag 8, so that the probability of damage to the detection head 6 due to overlarge vibration is reduced, the safety of the equipment is improved, the function of cleaning the detection head 6 is realized through the cleaning mechanism, dust and impurities cannot remain on the detection head 6, the influence on the next flaw detection work is avoided, and the reliability of the equipment is improved, compare with current clean mechanism, this clean mechanism can also make inside and outside formation atmospheric pressure difference of guard box 7, the inside leakproofness of guard box 7 has been promoted, make external impurity can not the adhesion on detecting head 6 again, thereby can not exert an influence to clear quality, thereby the reliability of equipment has been improved, and the stability of detecting head 6 and placing in guard box 7 has also been improved, make and detect that head 6 can not make a round trip to rock, thereby can not cause the damage of detecting head 6, the security is higher.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.