CN113664678B - Multifunctional integrated ultrasonic detection equipment - Google Patents

Abstract

The invention discloses multifunctional integrated ultrasonic detection equipment, relates to the field of ultrasonic detection, and aims to solve the problems that multiple positioning is needed in the ultrasonic detection process, the operation process is extremely complicated, the time cost is long, and the reliability of detected data is poor; a polishing component and a detection component are arranged on the two sides of the bracket in a central symmetry manner, the polishing component comprises a motor I, and a polishing disc is arranged at the front end of a rotating shaft of the motor I; the detection assembly comprises an ultrasonic inspection head. The three functions of equipment polishing, couplant spraying and ultrasonic detection in the detection process are based on the same ultrasonic detection equipment, so that the rapid positioning, polishing, couplant spraying and continuous measurement can be realized, and the device has the advantages of miniaturization, integration, convenience in carrying and the like; and the operation is simpler, carries more lightly, and the use accuracy is higher, and application scope is wider.

Description

Multifunctional integrated ultrasonic detection equipment

Technical Field

The invention relates to the technical field of ultrasonic detection, in particular to multifunctional integrated ultrasonic detection equipment.

Background

The service of the pressure-bearing equipment often relates to environments such as high temperature, high pressure, corrosion, radiation and the like, and the subsequent damages such as fatigue, creep deformation, radiation and the like become main factors which endanger the service safety of the special pressure-bearing equipment and cause accidents such as explosion and the like. With the continuous development of pressure-bearing equipment in two dimensions of extreme environment and extreme dimension, the change of failure mode and detection equipment is inevitable to bring about. In order to ensure safety, corresponding detection equipment needs to be developed so as to quickly obtain corresponding evaluation data. At present, the methods of the ultrasonic thickness measuring method and the device at home and abroad have the following problems: 1. three tools of a grinding machine, a couplant tank and an ultrasonic thickness gauge are separated, and the three tools are required to be separately used for accurate thickness measurement. This results in a lot of tools that the inspector needs to carry, which is inconvenient. 2. Polishing by using a polishing machine: the polishing operation wastes the inspection time and reduces the inspection efficiency; and the traditional sander is bulky. 3. Spraying a coupling agent: at present, a couplant tank for spraying is generally made of plastic and is extruded by hands. The spraying method of the couplant is inconvenient, uneven and more in waste. Therefore, the ultrasonic detection device and the process of the pressure-bearing equipment mainly comprise the processes of polishing the detection part of the container pipeline, spraying the coupling agent, detecting the ultrasonic waves and the like. However, in the actual operation process, the grinding is carried out in the order of best flaw detection after spraying, and grinding-spraying-detecting tools are separated from each other and are not related. Therefore, the spraying process needs to be repositioned after polishing, the ultrasonic flaw detection process needs to be repositioned after spraying, the operation process is extremely complicated, the time cost is long, the reliability of detected data has problems, and the like.

Therefore, a new solution is needed to solve this problem.

Disclosure of Invention

The invention aims to solve the problems that the existing ultrasonic thickness measuring method and device have a plurality of tools and are inconvenient to use, the couplant is not sprayed uniformly, the time is wasted due to the repositioning after the grinding machine finishes grinding, and the like, and provides a multifunctional integrated ultrasonic detection device, which enhances the efficiency of thickness measurement work, accurately matches the grinding and thickness gauge probe, and improves the couplant spraying mode; the operation is simpler, the carrying is more convenient, the use precision is higher, and the application range is wider.

The technical purpose of the invention is realized by the following technical scheme: a multifunctional integrated ultrasonic detection device comprises an ultrasonic detector main body and a bracket which is rotatably connected to the ultrasonic detector main body; a polishing assembly and a detection assembly are arranged on the two sides of the bracket in a central symmetry manner, the polishing assembly comprises a motor I, and a polishing disc is arranged at the front end of a rotating shaft of the motor I; the detection assembly comprises an ultrasonic inspection head.

The invention is further configured to: the detection assembly further comprises a telescopic lifting piece, the rear end of the lifting piece is fixed to the bracket, and the ultrasonic flaw detection head is installed at the front end of the lifting frame.

The invention is further configured to: the front end periphery fixedly connected with couplant section of thick bamboo of lift piece, a couplant section of thick bamboo is cyclic annular cover outside the ultrasonic inspection head, the front end direction of a couplant section of thick bamboo sets up cyclic annular opening, a couplant section of thick bamboo internal piston is connected with and is used for sealing open-ended loose ring, the loose ring sets up a plurality of liquid holes, support through stock solution spring elasticity in a couplant section of thick bamboo and press in the ladder face of opening part.

The invention is further configured to: the liquid outlet holes are annularly distributed around the ultrasonic flaw detection head, and the front ends of the liquid outlet holes are gradually reduced and inclined towards the middle.

The invention is further configured to: the front end face of the movable ring is provided with an extension sleeve which can extend out of the opening, and the front end of the extension sleeve exceeds the ultrasonic flaw detection head.

The invention is further configured to: the lifting piece comprises a fixed pipe fixedly connected to the bracket and a telescopic pipe fixedly connected to the couplant barrel, the telescopic pipe is sleeved outside the fixed rod in a sliding mode, a supporting plate is arranged in the telescopic pipe, and a sleeve is fixedly connected to the supporting plate.

The invention is further configured to: the other end fixedly connected with motor two of bracket, the output of motor two is connected with the screw rod that sets up the external screw thread, the one end of screw rod is passed bracket and fixed pipe and threaded connection in the cover pipe.

The invention is further configured to: the one end that the fixed pipe stretched into the expansion pipe is provided with the piston circle, the piston circle cup joints outside the sleeve pipe and with sleeve pipe periphery wall, the interior perisporium piston connection of flexible pipe, form confined storage chamber between backup pad, the piston circle, be connected through the transfer line between the drain mouth in storage chamber and stock solution chamber, set up the check valve on the transfer line, storage chamber accessible feed liquor pipe is connected with external liquid source.

The invention is further configured to: the fan is arranged between the bracket and the polishing disc, the fan can be in friction transmission with the rotating shaft through the friction piece, and the polishing disc is provided with a plurality of through holes.

The invention is further configured to: the inner ring of the fan is provided with a rotary sleeve and a support sleeve, the rotary sleeve and the support sleeve are both sleeved outside the rotating shaft, the support sleeve is fixedly connected to a shell of the motor, the rotary sleeve is rotatably connected to the outside of the support sleeve, and the fan is fixed to the outside of the rotary sleeve.

The invention is further configured to: a sliding sleeve is arranged on one side, facing the rotating shaft, of the polishing disc, a sliding block is arranged at the end part of the rotating shaft, the sliding block extends into the sliding sleeve, and the parallel cylinder guide rib and the guide groove are limited in a sliding mode; the front side and the rear side of the sliding block are respectively elastically maintained in the sliding sleeve through a first spring and a second spring.

The invention is further configured to: the inner periphery of the rotating sleeve is fixedly connected with a first friction ring, the sliding sleeve extends into the rotating sleeve and is provided with a plurality of connecting rods, one ends of the connecting rods are hinged to the sliding sleeve through rotating frames, the middle section of each connecting rod is connected with the sliding sleeve through a third spring, a friction head used for pressing the first friction ring is fixed at the other end of each connecting rod, and the friction head is used for pressing friction transmission with the first friction ring; the first spring and the second spring are used for elastically maintaining the friction head to be separated from the first friction ring.

The invention is further configured to: the friction ring comprises a friction curved surface which is used for being in friction pressing with the friction head, and the friction curved surface is a structure with a concave middle part and two protruding ends.

The invention is further configured to: the front end of the rotating sleeve is fixedly connected with a third friction ring, a second friction ring is arranged in the rear end direction of the third friction ring, the second friction ring is fixedly connected outside the sliding sleeve, and a friction pad for friction transmission with the third friction ring is arranged on one side, facing the third friction ring, of the second friction ring; the first spring and the second spring are used for elastically maintaining the friction pad to press the third friction ring.

In conclusion, the invention has the following beneficial effects:

1. the invention bases three functions of equipment polishing, couplant spraying and ultrasonic detection in the detection process on the same ultrasonic detection equipment, can realize the continuous operation of quick positioning, polishing, couplant spraying and measurement, and has the advantages of convenient operation, miniaturization and integration of equipment, convenient carrying and the like.

2. The spray head in the mechanical structure is designed, so that the spray head is more convenient and uniform than the traditional spray head, the couplant is sprayed at the same time of measurement, convenience and rapidness are realized, and the steps are simple; the coaxial design is adopted, the spraying channel which inclines inwards is arranged, the spraying position is accurate and effective, the sufficient couplant is coated at the detection position, and the measurement accuracy of the ultrasonic thickness gauge is ensured.

3. According to the invention, the polishing head is provided with the hole, and the small fan device is arranged at the rear part, so that chips generated by polishing can be blown off during polishing, the integration of polishing and chip removal is realized, the operation is saved, and the efficiency is improved.

4. The polishing head and the ultrasonic probe are designed based on the central symmetry of the rotating shaft, and the probe can be accurately aligned to a polishing area only by rotating the tray after polishing is completed, so that calibration is not required, and the polishing head and the ultrasonic probe are more convenient and quicker.

5. The ultrasonic detector main body can be provided with the display screen, so that the measuring result and the working state of each part can be visually and conveniently observed, and the solid keys are arranged, so that the convenience of instruction operation of each part is facilitated while the error touch is prevented.

Drawings

FIG. 1 is a first structural schematic diagram of a multifunctional integrated ultrasonic testing apparatus according to the present invention;

FIG. 2 is a schematic structural diagram II of the multifunctional integrated ultrasonic testing apparatus of the present invention;

FIG. 3 is a cross-sectional view of the sanding assembly of the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 3;

FIG. 5 is a cross-sectional view of a detection assembly of the present invention.

Reference numerals: 1. an ultrasonic detector main body; 2. a bracket; 3. an ultrasonic inspection head; 4. a first motor; 5. a support sleeve; 6. a rotating sleeve; 7. a fan; 8. a rotating shaft; 9. grinding disc; 10. a through hole; 11. a sliding sleeve; 12. a slider; 13. a first spring; 14. a second spring; 15. a guide rib; 16. a guide groove; 17. a rotating frame; 18. a connecting rod; 181. a third spring; 19. a friction head; 20. a first friction ring; 21. rubbing the curved surface; 22. a second friction ring; 23. a friction pad; 24. a friction ring III; 25. a convex ring; 26. a fixed tube; 27. a telescopic pipe; 28. a couplant cartridge; 29. an opening; 30. a movable ring; 31. a liquid storage cavity; 32. a liquid storage spring; 33. an extension sleeve; 34. a liquid outlet hole; 35. a support plate; 36. a sleeve; 37. a screw; 38. an external thread; 39. a second motor; 40. a piston ring; 41. a storage chamber; 42. a liquid inlet pipe; 43. a transfusion tube; 44. a liquid guide port; 45. a one-way valve.

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. 1-5, a multifunctional integrated ultrasonic testing apparatus includes an ultrasonic testing apparatus main body 1, a control system is configured in the ultrasonic testing apparatus main body 1, which can control the overall operation parameters of the apparatus, and a display screen and a case can be configured on the main body for operation and control;

a bracket 2 is rotatably connected to the ultrasonic detector body 1; the bracket 2 is in a strip structure, and is rotatably arranged on the back of the ultrasonic detector main body 1 by taking the middle as a rotating shaft 8; a grinding assembly and a detection assembly are arranged on the two sides of the bracket 2 in a central symmetry manner, wherein the grinding assembly comprises a motor I4, a grinding disc 9 is arranged at the front end of a rotating shaft 8 of the motor I4, and the surface of equipment to be detected can be ground, so that the surface detection after grinding is more accurate; the detection assembly comprises an ultrasonic flaw detection head 3 which can carry out ultrasonic detection on the surface of the equipment, and a couplant spraying mechanism is arranged on the periphery of the detection assembly and can spray the couplant on the surface of the equipment before detection, so that the spraying and detection actions are integrated, and the operation is more convenient; based on 8 centrosymmetric designs of rotation axis, only need rotate bracket 2 after finishing polishing and can make polishing subassembly and determine module rotate the replacement position accurately, make determine module aim at the regional position of polishing again, need not to carry out calibration work again, it is more convenient and swift.

This detection module passes through the telescopic lift piece and installs on bracket 2, and wherein the rear end of this lift piece is fixed in bracket 2, and this ultrasonic inspection head 3 then installs in the front end of crane, can adjust the front and back position of ultrasonic inspection head 3 through the flexible of electrical control lift piece to can adjust according to specific position requirement, accomplish the ultrasonic measurement work.

As shown in fig. 5, in order to realize accurate spraying of the couplant spraying mechanism, it includes a couplant cartridge 28 capable of storing the couplant, and is in a ring structure, fixed around the outer periphery of the front end of the lifting member; the ultrasonic testing head 3 is located at the center of the couplant cylinder 28, and the ultrasonic probe is oriented in the same direction as the spraying direction of the couplant cylinder 28, and can spray a reagent toward the tip of the ultrasonic testing head 3. An annular opening 29 is formed in the front end direction of the couplant cylinder 28, a movable ring 30 is connected to a piston in the couplant cylinder 28, the opening 29 can be closed when the movable ring 30 moves towards the opening 29, and a plurality of liquid outlet holes 34 are formed in the movable ring 30 for spraying the couplant; and a liquid storage spring 32 is further arranged in the couplant barrel 28, and the movable ring 30 is elastically pressed against the stepped surface at the opening 29 under the action of the liquid storage spring 32 to seal the opening 29, so that the couplant can only be output from the liquid outlet 34.

Eight liquid holes 34 are even and distribute annularly around ultrasonic inspection head 3 to the front end of every liquid hole 34 reduces gradually and inclines towards the centre, thereby can concentrate the spraying towards the position of axis, and the couplant after the spraying can gather on the surface of ultrasonic inspection head 3, with the accuracy that improves ultrasonic testing.

The front end face of the movable ring 30 is connected with an extension sleeve 33, the extension sleeve 33 can extend out from an opening 29 at the front end of the couplant cylinder 28 and exceed the ultrasonic flaw detection head 3 to form an annular coating structure around the ultrasonic flaw detection head 3, and the movable ring 30 can be driven to move in a piston inside the couplant cylinder 28 by extruding the extension sleeve 33, so that a containing cavity for storing a reagent inside the couplant cylinder 28 is reduced, the reagent inside the couplant cylinder 28 is extruded and sprayed out from a liquid outlet hole 34 to coat the position near the ultrasonic flaw detection head 3, and the spraying and detection operation of the couplant is more convenient.

The lifting member in the spraying mechanism can adopt various telescopic structures, in the embodiment, the lifting member comprises a fixed pipe 26 and an extension pipe 27, the extension pipe 27 is sleeved outside the fixed rod and is in guiding fit with the guide groove 16 through a proper guide rib 15; the end of the fixed pipe 26 is fixedly connected with the bracket 2 to form a fixed state, the telescopic pipe 27 is fixedly connected with the rear end of the couplant cylinder 28 and connected with the bracket 2 to form the lifting action of the couplant cylinder 28 and the ultrasonic flaw detection head 3 on the inner periphery thereof;

the fixed pipe 26 and the telescopic pipe 27 are electrically controlled to stretch and retract, a supporting plate 35 is arranged in the telescopic pipe 27 after being fixed, a sleeve 36 is fixedly connected to the center of the supporting plate 35, a second motor 39 is fixedly connected to the other side of the bracket 2, the output end of the second motor 39 is connected with a screw 37, one end of the screw 37 penetrates through the bracket 2 and the fixed pipe 26 and extends into the sleeve 36 and is connected with the inner circumference of the sleeve 36 through an external thread 38 on the periphery of the screw 37, and therefore the screw motion can be formed between the sleeve 36 and the screw 37 through the rotation of the second motor 39, the axial rotation is converted into the axial movement, the sleeve 36 and the telescopic pipe 27 are driven to move, the lifting action of a lifting piece is realized, the ultrasonic flaw detection head 3 and the matched components at the corresponding positions are driven to lift and retract, and the adjustment action suitable for the detection environment can be generated.

As more couplant needs to be coated relatively frequently in the detection process, and the reagents stored in the couplant barrel 28 are relatively limited, in order to increase the storage capacity, a containing cavity can be properly added in the extension tube 27 to enlarge the storage capacity of the couplant; a piston ring 40 can be arranged at one end of the fixed pipe 26 extending into the telescopic pipe 27, the piston ring 40 can be sleeved outside the sleeve pipe 36 and is in piston connection with the outer peripheral wall of the sleeve pipe 36 and the inner peripheral wall of the telescopic pipe 27, a closed storage cavity 41 is formed among the supporting plate 35, the piston ring 40 and the inner wall of the telescopic pipe 27, and a containing cavity capable of temporarily storing the coupling agent is formed; and the storage cavity 41 is connected with the liquid guide port 44 of the liquid storage cavity 31 through a liquid conveying pipe 43, a one-way valve 45 is arranged on the liquid conveying pipe 43 to form a one-way coupling agent flow guide structure from the storage cavity 41 to the storage cavity 41, a liquid inlet pipe 42 can be connected to the storage cavity, and the liquid inlet pipe 42 can be continuously communicated with an external coupling agent liquid source or in a closed disconnected state and is adjusted according to the using amount of the coupling agent in the detection environment.

In the detection process, when the couplant in the couplant barrel 28 is insufficient, the telescopic pipe 27 and the fixed pipe 26 can be controlled to be shortened through the second motor 39, so that the piston mechanism can be driven to compress the storage cavity 41, the couplant in the storage cavity is extruded, and the couplant is supplied to the inside of the couplant barrel 28; when the second motor 39 controls the extension tube 27 and the fixed tube 26 to extend, the volume of the storage cavity can be enlarged to form negative pressure, if the liquid inlet tube 42 of the storage cavity is connected with a couplant liquid source, the couplant can be sucked from the liquid inlet tube, and the couplant is filled in the storage cavity, so that the subsequent supplement of the reagents to the storage cavity 41 is facilitated; because the extension pipe 27 and the fixed pipe 26 need to be matched with the storage and supplement of the couplant, the extension and retraction adjustment of the extension and retraction pipe needs to be matched with the required amount of the couplant for use, and the adjustment of the detection assembly can adopt the form of an integral moving host to adjust the position of the whole device.

In order to facilitate cleaning of debris generated during polishing, a fan 7 can be arranged between the bracket 2 and the polishing disc 9, and the fan 7 can be in friction transmission with the rotating shaft 8 through a friction piece to realize rotation of the fan 7; and a plurality of through holes 10 are arranged on the polishing disc 9, air flow is generated through rotation of the fan 7, and the air flow can pass through the through holes 10 to remove fragments generated during polishing, so that subsequent detection influenced by the polishing fragments is facilitated.

The inner ring of the fan 7 is rotatably supported through the rotary sleeve 6 and the support sleeve 5, the rotary sleeve 6 and the support sleeve 5 are both sleeved outside the rotating shaft 8, the support sleeve 5 is fixedly connected to the shell of the first motor 4 to form a fixed structure, the rotary sleeve 6 is rotatably connected outside the support sleeve 5 to form an axial rotating structure, the fan 7 is fixed outside the rotary sleeve 6, and the fan 7 is synchronously driven to rotate through the rotation of the rotary sleeve 6.

The polishing disc 9 can form a certain elastic floating structure in the axial direction and can form elastic stretching during pressing, soft polishing extrusion can be formed on the surface of the equipment surface in the polishing process, friction can be formed on the rotating sleeve 6 in the fan 7 through the pressure in the axial stretching process, and the fan 7 is driven to rotate through the friction.

As shown in fig. 4, a sliding sleeve 11 can be fixedly connected to one side of the polishing disk 9 facing the rotating shaft 8, the sliding sleeve 11 is coaxial with the polishing disk 9, a sliding block 12 is fixedly connected to the end of the rotating shaft 8, the sliding block 12 extends into the sliding sleeve 11, and the cylinder guide rib 15 and the guide groove 16 are limited in a sliding manner; the front side and the rear side of the sliding block 12 are elastically maintained in the sliding sleeve 11 through a first spring 13 and a second spring 14 respectively, and the first spring 13 and the second spring 14 are supported in a pressing manner through step surfaces in the sliding sleeve 11;

the inner periphery of the rotating sleeve 6 can be fixedly connected with a first friction ring 20, the sliding sleeve 11 extends into the rotating sleeve 6 and is connected with a plurality of connecting rods 18, one end of each connecting rod 18 is hinged on the sliding sleeve 11 through a rotating frame 17, the middle section of each connecting rod 18 is connected with the sliding sleeve 11 through a third spring 181, the other end of each connecting rod 18 is fixedly provided with a friction head 19, the friction heads 19 can be elastically pressed against the first friction ring 20 under the action of the springs, and the first friction ring 20 and the rotating sleeve 6 are driven through the friction between each friction head 19 and the first friction ring 20; under the condition of relaxation, a certain gap is formed between the friction head 19 and the first friction ring 20 through the elastic action of the first spring 13 and the second spring 14, and when the friction disc is subjected to axial pressure, the friction disc and the sliding sleeve 11 integrally move towards the rotating sleeve 6, so that the friction head 19 can be pressed against and rubbed with the first friction ring 20, and friction transmission is realized; and a friction curved surface 21 is formed on one side of the first friction ring 20 facing the friction head 19, the middle position of the friction curved surface 21 is concave, when the friction disc is pressed, the friction head 19 is basically controlled at the middle concave position of the friction curved surface 21, the outward movement and expansion of the friction head 19 are relatively small when the friction disc is pressed, a large resistance is formed, and the pressing force of the part can be directly acted between the friction disc and the grinding surface, so that the grinding efficiency is improved.

In order to keep the fan 7 capable of rotating under different conditions, a friction ring III 24 is fixedly connected to the front end of the rotary sleeve 6, a friction ring II 22 is arranged in the rear end direction of the friction ring III 24, the inner ring of the friction ring II 22 is fixedly connected to the outside of the sliding sleeve 11, the friction ring II 22 can be driven to move by the movement of the sliding sleeve 11, a friction pad 23 is fixed on one side, facing the friction ring III 24, of the friction ring II 22, after the friction ring II 22 moves towards the friction ring III 24 along with the sliding sleeve 11, the friction ring II and the friction ring III 24 are mutually abutted and pressed to contact, friction transmission is achieved, and then the fan 7 can be driven to rotate. And under the condition of relaxation, the elastic force formed by the first spring 13 and the second spring 14 together maintains the position of the second friction ring 22 and the third friction ring 24 in a mutual pressing condition, so that the fan 7 can rotate along with the friction disc under the condition of not grinding contact;

in the grinding process, when the friction disc is not pressed, namely not ground, the fan 7 rotates, and debris on the surface of the grinding head can be removed; when the friction disc is subjected to small pressure, namely under the condition of slight grinding, the second friction ring 22 is separated from the third friction ring 24, the first friction head 19 is also separated from the first friction ring 20, at the moment, the fan 7 stops rotating, the slotted hole equipment of an operator can slightly grind the friction disc, the grinding surface is trimmed, relatively few chips are generated, then the grinding disc 9 can be loosened, and the grinding surface is cleaned through the air flow of the fan 7; when the friction disc is stressed by large pressure and heavily polished between the friction disc and the polished surface, the friction head 19 is in friction contact with the first friction ring 20, the fan 7 is driven to rotate by friction, debris generated in the polishing process can be rapidly removed, and the polished surface and the polishing operation can be conveniently observed.

The equipment generally bases three functions of equipment polishing, couplant spraying and ultrasonic detection in the detection process on the same ultrasonic detection equipment, can realize rapid positioning, polishing, couplant spraying and continuous measurement, is convenient to operate, and has the advantages of miniaturization, integration, convenience in carrying and the like; and the operation is simpler, carries more lightly, and the use accuracy is higher, and application scope is wider.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (7)

1. The multifunctional integrated ultrasonic detection equipment is characterized by comprising an ultrasonic detector main body (1) and a bracket (2) which is rotatably connected to the ultrasonic detector main body (1); a grinding assembly and a detection assembly are arranged on the two sides of the bracket (2) in a central symmetry manner, the grinding assembly comprises a motor I (4), and a grinding disc (9) is arranged at the front end of a rotating shaft (8) of the motor I (4); the detection assembly comprises an ultrasonic flaw detection head (3);

the detection assembly further comprises a telescopic lifting piece, the rear end of the lifting piece is fixed on the bracket (2), and the ultrasonic flaw detection head (3) is installed at the front end of the lifting frame;

a fan (7) is arranged between the bracket (2) and the grinding disc (9), the fan (7) can be in friction transmission with the rotating shaft (8) through a friction piece, and a plurality of through holes (10) are formed in the grinding disc (9);

the inner ring of the fan (7) is provided with a rotating sleeve (6) and a supporting sleeve (5), the rotating sleeve (6) and the supporting sleeve (5) are both sleeved outside the rotating shaft (8), the supporting sleeve (5) is fixedly connected to the shell of the motor I (4), the rotating sleeve (6) is rotatably connected outside the supporting sleeve (5), and the fan (7) is fixed outside the rotating sleeve (6);

a sliding sleeve (11) is arranged on one side, facing the rotating shaft (8), of the polishing disc (9), a sliding block (12) is arranged at the end part of the rotating shaft (8), the sliding block (12) extends into the sliding sleeve (11), and the combining guide rib (15) and the guide groove (16) are limited in a sliding mode; the front side and the rear side of the sliding block (12) are elastically maintained in the sliding sleeve (11) through a first spring (13) and a second spring (14) respectively;

the inner periphery of the rotating sleeve (6) is fixedly connected with a first friction ring (20), the sliding sleeve (11) extends into the rotating sleeve (6) and is provided with a plurality of connecting rods (18), one end of each connecting rod (18) is hinged to the corresponding sliding sleeve (11) through a rotating frame (17), the middle section of each connecting rod (18) is connected with the corresponding sliding sleeve (11) through a third spring (181), a friction head (19) used for pressing against the corresponding first friction ring (20) is fixed to the other end of each connecting rod (18), and the friction head (19) is used for pressing against the corresponding first friction ring (20) for friction transmission; the first spring (13) and the second spring (14) are used for elastically maintaining the friction head (19) to be separated from the first friction ring (20); the first friction ring (20) comprises a friction curved surface (21) which is used for being in friction pressing with the friction head (19), and the friction curved surface (21) is of a structure with a concave middle and two protruding ends.

2. The ultrasonic testing device of claim 1, wherein a couplant cylinder (28) is fixedly connected to the periphery of the front end of the lifting member, the couplant cylinder (28) is annularly sleeved outside the ultrasonic testing head (3), an annular opening (29) is formed in the front end direction of the couplant cylinder (28), a movable ring (30) used for sealing the opening (29) is connected to the piston in the couplant cylinder (28), the movable ring (30) is provided with a plurality of liquid outlet holes (34), and the couplant cylinder (28) is elastically pressed against the stepped surface at the opening (29) through a liquid storage spring (32).

3. The multifunctional integrated ultrasonic testing device of claim 2, wherein the liquid outlet holes (34) are distributed annularly around the ultrasonic testing head (3), and the front ends of the liquid outlet holes (34) are gradually reduced and inclined towards the middle.

4. A multifunctional integrated ultrasonic testing apparatus as claimed in claim 3, characterized in that the front end face of the movable ring (30) is provided with an extension sleeve (33) which can extend out of the opening (29), and the front end of the extension sleeve (33) is beyond the ultrasonic testing head (3).

5. The multifunctional integrated ultrasonic testing device of claim 1, wherein the lifting member comprises a fixed pipe (26) fixedly connected to the bracket (2) and a telescopic pipe (27) fixedly connected to the couplant barrel (28), the telescopic pipe (27) is slidably sleeved outside the fixed rod, a support plate (35) is arranged in the telescopic pipe (27), and a sleeve (36) is fixedly connected to the support plate (35).

6. The multifunctional integrated ultrasonic testing equipment of claim 5, wherein a second motor (39) is fixedly connected to the other end of the bracket (2), a screw rod (37) with an external thread (38) is connected to the output end of the second motor (39), and one end of the screw rod (37) penetrates through the bracket (2) and the fixing tube (26) and is in threaded connection with the inside of the sleeve (36).

7. The multifunctional integrated ultrasonic testing device of claim 6, wherein a piston ring (40) is arranged at one end of the fixed pipe (26) extending into the telescopic pipe (27), the piston ring (40) is sleeved outside the sleeve (36) and is in piston connection with the outer peripheral wall of the sleeve (36) and the inner peripheral wall of the telescopic pipe (27), a closed storage cavity (41) is formed between the supporting plate (35) and the piston ring (40), the storage cavity (41) is connected with a liquid guide port (44) of the liquid storage cavity (31) through a liquid conveying pipe (43), a check valve (45) is arranged on the liquid conveying pipe (43), and the storage cavity can be connected with an external liquid source through the liquid inlet pipe (42).

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