An ultrasonic flaw detection device for detecting flaws in a ring-shaped workpiece

Abstract

The application discloses an ultrasonic flaw detection device for detecting a ring-shaped workpiece, which comprises a support frame, a frame structure arranged above the ring-shaped workpiece; a walking clamping mechanism installed at the lower part of the support frame, used for clamping the ring-shaped workpiece and walking along the circumferential direction of the ring-shaped workpiece; a flaw detection system comprising an ultrasonic flaw detector, a transverse flaw detection system used for detecting the end face of the ring-shaped workpiece and / or a longitudinal flaw detection system used for detecting the circular arc surface of the ring-shaped workpiece; a liquid supply system used for supplying coupling liquid to the end face and the inner and outer circular arc surfaces of the ring-shaped workpiece; and a control system used for controlling the walking action of the walking clamping mechanism and the scanning action of the flaw detection system. The scheme of the application realizes automatic walking of the walking clamping mechanism, automatic flaw detection of the end face and the circular arc surface by the flaw detection system, and high-efficiency adaptation of the ring-shaped workpiece without manual operation, good consistency and reduced labor intensity by combining the liquid supply system and the control system.

Description

Technical Field

[0001] This application generally relates to the field of nondestructive testing technology. More specifically, this application relates to an ultrasonic testing device for detecting flaws in ring-shaped workpieces. Background Technology

[0002] Large ring-shaped workpieces are key load-bearing components in many heavy equipment, such as wind turbine gearbox gear rings, large bearing rings, and slewing bearings. Taking wind turbine gearbox gear rings as an example, they are enormous in size and can weigh several tons. In wind turbine generators, they bear enormous responsibilities for speed ratio conversion and core torque transmission, making them one of the most stressed and critical components in the entire transmission chain. The materials and processing costs for these ring-shaped workpieces are high, and any internal defects leading to failure can result in catastrophic consequences. Therefore, extremely stringent requirements are placed on their internal quality, especially quality control during the finishing forging stage. Ultrasonic testing, as an important method for detecting internal defects (such as cracks, porosity, inclusions, etc.), is used throughout the quality monitoring of these ring-shaped workpiece blanks and their entire lifecycle.

[0003] Currently, ultrasonic testing of large ring-shaped workpieces mainly relies on manual operation of portable ultrasonic flaw detectors. Taking the gear ring of a wind turbine gearbox as an example, the gear ring is usually placed horizontally on the ground. The operator first manually applies a coupling fluid (such as engine oil) to the outer arc surface and the upper end face of the gear ring, and then slides the probe across the end face and outer arc surface of the gear ring, judging the internal quality by observing the waveform of the flaw detector. This method has obvious drawbacks: on the one hand, the workpiece is huge, and manual inspection is time-consuming and inefficient. On the other hand, the test results are highly dependent on the operator's concentration and experience, which can cause discontinuous probe movement paths or incomplete scanning coverage, leading to missed detection of critical parts and posing safety hazards. At the same time, different operators have different techniques, probe pressure, and movement speeds, making it difficult to guarantee the consistency and repeatability of the test results, and making it impossible to form standardized quality records.

[0004] In view of this, there is an urgent need to provide an ultrasonic flaw detection device solution for flaw detection of ring-shaped workpieces, so as to replace the existing manual flaw detection method with automated detection, improve detection efficiency, and ensure the reliability and consistency of detection results. Summary of the Invention

[0005] In order to at least solve one or more of the technical problems mentioned above, this application proposes an ultrasonic testing device scheme for detecting flaws in ring-shaped workpieces with high detection efficiency and reliable results in several aspects.

[0006] This application provides an ultrasonic flaw detection device for flaw detection of annular workpieces, comprising: a support frame, which is a frame structure disposed above the end face of the annular workpiece; a traveling clamping mechanism, which is installed on the lower part of the support frame and is used to clamp the annular workpiece and travel along its circumference; a flaw detection system, which includes an ultrasonic flaw detector disposed on the support frame, and a transverse flaw detection system and / or a longitudinal flaw detection system connected to the ultrasonic flaw detector, wherein the transverse flaw detection system is used to detect flaws on the end face of the annular workpiece, and the longitudinal flaw detection system is used to detect flaws on the arc surface of the annular workpiece; a fluid supply system, which is used to supply coupling fluid to the end face and inner and outer arc surfaces of the annular workpiece; and a control system, which is disposed on the support frame and is used to control the traveling movement of the traveling clamping mechanism and the scanning movement of the flaw detection system.

[0007] In some embodiments, the walking clamping mechanism includes: a drive wheel assembly for traveling along the inner arc surface of the annular workpiece, a follower wheel assembly for traveling along the outer arc surface of the annular workpiece, and a support wheel assembly for supporting and rotating on the end face of the annular workpiece; the drive wheel assembly includes a drive unit and a drive wheel arranged on the inner arc surface of the annular workpiece; the drive wheel is provided with a switch, the switch being used to turn on or off the magnetic attraction function on the drive wheel, so that the drive wheel presses against the inner arc surface of the annular workpiece to increase friction.

[0008] In some embodiments, a slide rail is fixed on the walking clamping mechanism or support frame, and the drive wheel assembly is mounted on a slider that slides with the slide rail; the slider is provided with a locking device for locking and fixing the drive wheel assembly after it has been adjusted into place along the slide rail.

[0009] In some embodiments, the follower wheel assembly includes a follower wheel and a spindle, wherein the follower wheel and the spindle are circumferentially fixed and axially limited; the follower wheel has at least one circumferential protrusion.

[0010] In some embodiments, the support wheel assembly includes two outer wheels and an intermediate wheel arranged coaxially, with the two outer wheels located on opposite sides of the intermediate wheel along its axial direction. The outer wheels have an outer edge protrusion on their circumferential surface, and the intermediate wheel has a central protrusion on its circumferential surface. The outer wheels and the intermediate wheel are capable of rotating relatively independently. The support wheel assembly is mounted on a sliding block that slides in conjunction with a sliding rail. The sliding block is provided with a locking mechanism for locking and fixing the support wheel assembly after it has been adjusted into position along the sliding rail.

[0011] In some embodiments, the mounting base of the support wheel assembly is adjusted in all directions via a thrust bearing; the support wheel assembly is also provided with a limiting bolt and a limiting hole, the limiting bolt being optionally screwed into the limiting hole to lock the omnidirectional function.

[0012] In some embodiments, the transverse flaw detection system includes a transverse moving platform fixed to the support frame and an ultrasonic probe mounting base slidably mounted on the transverse moving platform, wherein the transverse moving platform extends radially along the annular workpiece, and the ultrasonic probe mounting base is movable along the length direction of the transverse moving platform and is also height-adjustable.

[0013] In some embodiments, the ultrasonic probe mounting base includes: a lower plate having a mounting hole for the ultrasonic probe to pass through, wherein the flange of the ultrasonic probe is located on the upper surface of the lower plate; an upper plate located above the lower plate; a limiting plate connected to the lower part of the upper plate by bolts; and a transverse compression spring sleeved on the transverse ultrasonic probe, one end abutting against the upper surface of the flange of the ultrasonic probe, and the other end abutting against the lower surface of the limiting plate; wherein one end of the transverse ultrasonic probe passes through the mounting hole, and the other end has a predetermined distance from the limiting plate.

[0014] In some embodiments, the longitudinal flaw detection system is mounted on the support frame and includes an electric cylinder, a rotating shaft hinge assembly, and a slide rod connected in sequence. The slide rod is provided with an anti-rotation part to prevent circumferential rotation. An open frame structure consisting of a U-shaped bracket and a probe fixing plate is mounted on one end of the slide rod away from the rotating shaft hinge assembly. A longitudinal ultrasonic probe and a longitudinal compression spring are mounted on the open frame structure. One end of the longitudinal ultrasonic probe is confined to the probe fixing plate, and the other end passes through the U-shaped bracket. The longitudinal compression spring is sleeved on the longitudinal ultrasonic probe, with one end abutting against the flange of the ultrasonic probe and the other end abutting against the U-shaped bracket, so that the longitudinal ultrasonic probe is kept in a compressed state with the probe fixing plate.

[0015] In some embodiments, mounting holes are provided on the two opposite sidewalls of the U-shaped bracket, and magnetic rollers are mounted in each mounting hole via a rotating shaft. The two magnetic rollers are located on both sides of the longitudinal ultrasonic probe and are used to adsorb the outer arc surface of the annular workpiece.

[0016] In some embodiments, the liquid supply system includes a coupling liquid tank, a main valve, a multi-way flow control valve, and multiple nozzles; the coupling liquid tank is installed on the flaw detection system and is connected to the main valve and the multi-way flow control valve in sequence through pipelines, and the multiple outlets of the multi-way flow control valve are respectively connected to the nozzles of the longitudinal flaw detection system and the nozzles of the transverse flaw detection system.

[0017] In some embodiments, a monitoring system is also included on the support frame. The monitoring system includes a laser ranging sensor and a photoelectric sensor. The laser ranging sensor includes a first laser ranging sensor that cooperates with the transverse laser ranging plate of the transverse flaw detection system and a second laser ranging sensor that cooperates with the longitudinal laser ranging plate of the longitudinal flaw detection system. The photoelectric sensor includes a receiver mounted on the support frame and a transmitter mounted on an external sensor bracket, used to monitor whether the device has completed a full circle of operation.

[0018] In some embodiments, the annular workpiece is a precision-machined forged blank of a large gear ring.

[0019] The ultrasonic flaw detection device for flaw detection of annular workpieces provided above, in this embodiment, automatically clamps the annular workpiece and moves along its circumference by setting a walking clamping mechanism. It works in conjunction with a transverse flaw detection system and / or a longitudinal flaw detection system to automatically detect flaws on the end face and arc surface of the annular workpiece. At the same time, the fluid supply system automatically provides coupling fluid and controls the system to coordinate the actions. This achieves the beneficial effects of eliminating the need for manual probe handling, effectively adapting to the flaw detection requirements of the special shape of annular workpieces, automating the flaw detection process, increasing efficiency, ensuring good consistency, and reducing labor intensity. Attached Figure Description

[0020] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application are illustrated by way of example and not limitation, and the same or corresponding reference numerals denote the same or corresponding parts, wherein:

[0021] Figure 1 This paper shows a schematic diagram of the ultrasonic flaw detection device of this application assembled on a ring-shaped workpiece according to an embodiment of the present application; Figure 2 This illustration shows a structural schematic diagram of the ultrasonic flaw detection device of this application assembled on a ring-shaped workpiece at another angle; Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 This illustration shows a structural schematic diagram of the ultrasonic flaw detection device of this application assembled on a ring-shaped workpiece at another angle; Figure 5 A schematic diagram of the ultrasonic flaw detection device according to an embodiment of this application is shown; Figure 6 This invention provides a schematic diagram of the ultrasonic flaw detection device according to an embodiment of the present application from another angle. Figure 7 A schematic diagram of the support frame of an ultrasonic flaw detection device for detecting flaws in annular workpieces according to an embodiment of this application is shown; Figure 8 A schematic diagram of the drive wheel assembly of the ultrasonic flaw detection device according to an embodiment of this application is shown; Figure 9 A schematic diagram of the follower wheel assembly of the ultrasonic flaw detection device according to an embodiment of this application is shown; Figure 10 A schematic diagram of the support wheel assembly of the ultrasonic flaw detection device according to an embodiment of this application is shown; Figure 11 A schematic diagram of the mounting base for the support wheel assembly according to an embodiment of this application is shown; Figure 12 A schematic diagram of the transverse flaw detection system of the ultrasonic flaw detection device according to an embodiment of this application is shown; Figure 13 This invention provides a schematic diagram of the transverse flaw detection system of the ultrasonic flaw detection apparatus according to an embodiment of the present application from another angle. Figure 14 A partial structural schematic diagram of the transverse flaw detection system of the ultrasonic flaw detection device according to an embodiment of this application is shown; Figure 15 A schematic diagram of the longitudinal flaw detection system of the ultrasonic flaw detection device according to an embodiment of this application is shown; Figure 16 This invention provides a schematic diagram of the longitudinal flaw detection system of the ultrasonic flaw detection apparatus according to an embodiment of the present application from another angle. Figure 17 This paper presents a schematic diagram of the longitudinal flaw detection system of the ultrasonic flaw detection apparatus according to an embodiment of the present application from another angle.

[0022] In the diagram: 100, ultrasonic flaw detector; 200, ring-shaped workpiece; 201, end face; 202, inner arc surface; 203, outer arc surface; 1. Support frame; 10. Ultrasonic flaw detector; 2. Walking and clamping mechanism; 21. Drive wheel assembly; 22. Follower wheel assembly; 23. Support wheel assembly; 211. Stepper motor; 212. Reducer; 213. Drive wheel seat; 214. T-type coupling; 215. Keyway; 216. First connecting key; 217. Shaft end baffle; 218. Drive wheel; 219. Switch; 221. Follower wheel; 222. Spindle; 223. Second connecting key; 224. Shaft end elastic retaining ring; 225. First bearing; 226. Adjusting shim; 227. Bearing end cover; 228. Protrusion; 231. Outer wheel; 232. Intermediate wheel; 233. Outer edge protrusion; 234. Center protrusion; 235. Mounting base; 236. Thrust bearing; 237. Nut; 238. Limit bolt; 239. Limit hole; 3. Lateral flaw detection system; 31. Lateral moving platform; 32. Ultrasonic probe mounting base; 33. Servo motor; 34. Lateral ultrasonic probe; 35. Slide table; 36. Oblong hole; 37. Lower plate; 38. Upper plate; 39. Lateral clamping spring; 310. Horizontal nozzle; 311. Horizontal laser rangefinder plate; 312. Limiting plate; 313. Bolt; 410. D-type sliding shaft; 411. D-type hole; 412. U-shaped bracket; 413. Longitudinal compression spring; 2110. Slider; 2111. Slide rail; 2112. Locking device; 2310. Bolt with hole; 2311. Flat washer; 2312. Slotted nut; 2313. Cotter pin; 2314. Bracket; 2315. Second bearing; 2316. Bushing; 2317. Spacer ring; 4. Longitudinal flaw detection system; 41. Electric cylinder; 42. Longitudinal laser rangefinder plate; 43. Rotary shaft mounting base; 44. Rotary shaft; 45. Slide rod assembly; 46. Longitudinal ultrasonic probe; 47. Longitudinal nozzle; 48. Magnetic roller; 49. Probe fixing plate; 5. Liquid supply system; 51. Coupling liquid tank; 52. Main valve; 53. Quarter valve; 54. Knob; 6. Monitoring system; 61. Camera; 62. First laser rangefinder; 63. Second laser rangefinder; 64. Receiver; 65. Transmitter; 66. Alarm light; 67. External sensor bracket; 7. Control system. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] It should be understood that the terms "comprising" and "including" used in the specification and claims of this application indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0025] It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this specification and claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this specification and claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0026] As used in this specification and claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0027] The specific embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0028] like Figure 1-6 As shown, in some embodiments, this application provides an ultrasonic flaw detection device 100 for flaw detection of annular workpiece 200, comprising: a support frame 1, which is a frame structure disposed above the end face 201 of the annular workpiece 200; a walking clamping mechanism 2, which is mounted on the lower part of the support frame 1 and is used to clamp the annular workpiece 200 and move along its circumference; a flaw detection system, which includes an ultrasonic flaw detector 10 disposed on the support frame 1, and a transverse flaw detection system 3 and / or a longitudinal flaw detection system 4 connected to the ultrasonic flaw detector 10, wherein the transverse flaw detection system 3 is used to perform flaw detection on the end face 201 of the annular workpiece 200, and the longitudinal flaw detection system 4 is used to perform flaw detection on the arc surface of the annular workpiece 200; a liquid supply system 5, which is used to provide coupling liquid to the end face 201 and the inner and outer arc surfaces of the annular workpiece 200; and a control system 7, which is disposed on the support frame 1 and is used to control the walking movement of the walking clamping mechanism 2 and the scanning movement of the flaw detection system.

[0029] In this application, the ultrasonic flaw detection device 100 for flaw detection of a ring-shaped workpiece 200 mainly includes a support frame 1, a traveling clamping mechanism 2, a flaw detection system, a liquid supply system 5, and a control system 7. For example... Figure 7 As shown, the support frame 1 is a frame structure located above the end face 201 of the annular workpiece 200. The frame structure is trapezoidal, and the overall outline of its two opposite side walls is arc-shaped, and the arc is consistent with the arc of the annular workpiece 200.

[0030] The walking clamping mechanism 2 is installed on the lower part of the support frame 1. It can clamp onto the annular workpiece 200 and move along the circumference of the annular workpiece 200, thereby realizing the self-fixation and automatic movement of the device on the annular workpiece 200. The flaw detection system includes an ultrasonic flaw detector 10 installed on the support frame 1, and a transverse flaw detection system 3 and a longitudinal flaw detection system 4 connected to the ultrasonic flaw detector 10. The transverse flaw detection system 3 is used to detect flaws on the end face 201 of the annular workpiece 200, and the longitudinal flaw detection system 4 is used to detect flaws on the arc surface of the annular workpiece 200.

[0031] The fluid supply system 5 provides coupling fluid to the end face 201 and inner and outer arc surfaces of the annular workpiece 200 to ensure good coupling between the ultrasonic probe and the workpiece surface, thereby improving the transmission efficiency and detection accuracy of the flaw detection signal. The control system 7 is mounted on the support frame 1 and is used to control the walking and clamping mechanism 2 and the scanning action of the flaw detection system, so that walking and flaw detection are carried out in coordination to realize the automated operation of the flaw detection process.

[0032] It is worth noting that this application does not limit the requirement to simultaneously provide both the transverse flaw detection system 3 and the longitudinal flaw detection system 4. In other embodiments, only the transverse flaw detection system 3 or only the longitudinal flaw detection system 4 may be provided.

[0033] The solution proposed in this application automatically clamps the annular workpiece 200 with a walking clamping mechanism 2 and moves along its circumference. It works in conjunction with a transverse flaw detection system 3 and / or a longitudinal flaw detection system 4 to automatically detect flaws on the end face 201 and the arc surface of the annular workpiece 200, respectively. At the same time, a fluid supply system 5 automatically provides coupling fluid and a control system 7 coordinates the actions. This achieves the beneficial effects of eliminating the need for manual hand-held probes, effectively adapting to the special shape of the annular workpiece 200 for flaw detection, automating the flaw detection process, increasing efficiency and consistency, and reducing labor intensity.

[0034] In one specific embodiment, the walking clamping mechanism 2 includes: a drive wheel assembly 21 for traveling along the inner arc surface 202 of the annular workpiece 200, a follower wheel assembly 22 for traveling along the outer arc surface 203 of the annular workpiece 200, and a support wheel assembly 23 for supporting and rotating on the end face 201 of the annular workpiece 200; the drive wheel assembly 21 includes a drive part and a drive wheel 218 arranged on the inner arc surface 202 of the annular workpiece 200; the drive wheel 218 is provided with a switch 219, which is used to turn on or off the magnetic attraction function on the drive wheel 218, so that the drive wheel 218 presses against the inner arc surface 202 of the annular workpiece 200 to increase the friction. The walking clamping mechanism 2 or the support frame 1 is fixed with a slide rail 2111, and the drive wheel assembly 21 is mounted on a slider 2110 that slides with the slide rail 2111. The slider 2110 is provided with a locking device 2112, which is used to lock and fix the drive wheel assembly 21 after it is adjusted into place along the slide rail 2111.

[0035] In this application, the traveling clamping mechanism 2 includes a drive wheel assembly 21 for traveling along the inner arc surface 202 of the annular workpiece 200, a follower wheel assembly 22 for traveling along the outer arc surface 203 of the annular workpiece 200, and a support wheel assembly 23 for supporting and rotating on the end face 201 of the annular workpiece 200. Figure 8 As shown, the drive wheel assembly 21 is arranged in pairs on the inner arc surface 202 of the annular workpiece 200. Its drive unit is composed of a stepper motor 211 and a reducer 212, and the assembly of the stepper motor 211 and the reducer 212 is mounted on the drive wheel seat 213. The output shaft of the reducer 212 is connected to the T-type coupling 214 through the first connecting key 216. The T-type coupling 214 has a keyway 215 for circumferential fixation, and the shaft end baffle 217 axially locks the T-type coupling 214 onto the reducer shaft. The large end of the T-type coupling 214 is fixedly connected to the drive wheel 218 by bolts, thereby transmitting power to the drive wheel 218. The drive wheel 218 is equipped with a switch 219 for turning the magnetic attraction function of the drive wheel 218 on or off. When the magnetic attraction function is activated, the drive wheel 218 can press against the inner arc surface 202 of the annular workpiece 200, significantly increasing the friction and thus improving the driving force.

[0036] In one specific embodiment, a permanent magnet assembly is disposed inside the drive wheel 218, and the switch 219 is a rotatable handle or knob, installed on the hub end face or axle end of the drive wheel 218, and is connected to the permanent magnet assembly inside the drive wheel 218 for transmission. The rotation axis of the switch 219 is coaxial or perpendicular to the axis of the drive wheel 218, and is connected to the internal permanent magnet assembly through gear transmission, worm gear transmission, or direct linkage.

[0037] In another specific embodiment, switch 219 can be electromagnetically controlled. An electromagnet assembly is installed inside drive wheel 218, and switch 219 is an electrically controlled button or toggle switch, located at the axle of drive wheel 218 or connected to a control panel via a wire. When switch 219 is pressed to the open position, the coil of the electromagnet assembly is energized, generating an electromagnetic field, and drive wheel 218 gains an attractive force. When switch 219 is switched to the closed position, the coil is de-energized, the magnetic field disappears, and the attractive force is released. To avoid energy consumption and heat generation caused by continuous energization, a permanent magnet can be integrated into the electromagnet assembly, employing the principle of electro-permanent magnet: only a momentary pulse current needs to be applied when the switch is switched to change the magnetic circuit state of the permanent magnet, realizing the opening or closing of the attractive force. The magnetic force can be maintained after power is cut off, which is both energy-saving and safe.

[0038] Regardless of the method used, switch 219 is positioned in a location easily accessible to the operator, such as the hub end face of drive wheel 218, the end of axle, or via a linkage mechanism to the side of support frame 1, so as to facilitate the activation and deactivation of the magnetic attraction function at any time during device installation, disassembly, and operation. Switch 219 can also be electrically connected to control system 7 to achieve remote or automated control, i.e., the activation and deactivation sequence of the magnetic attraction function can be preset in the control system without manual intervention.

[0039] In addition, to adapt the device to annular workpieces 200 of different thicknesses, the drive wheel assembly 21 is mounted on the slider 2110. The slider 2110 slides in cooperation with the slide rail 2111 fixed on the walking clamping mechanism 2 or the support frame 1. The slider 2110 is also equipped with a locking device 2112. When the flaw detection device is placed in a suitable position on the annular workpiece 200, the drive wheel assembly 21 can slide along the slide rail 2111 to adjust the clamping distance. After the adjustment is in place, the slider 2110 is locked so that the drive wheel assembly 21 and the follower wheel assembly 22 jointly clamp the annular workpiece 200. At the same time, the magnetic attraction function is activated to ensure that the drive wheel 218 is firmly attached to the inner arc surface 202, so as to achieve stable and reliable automatic walking.

[0040] like Figure 9 As shown, in a specific embodiment, the follower wheel assembly 22 includes a follower wheel 221 and a spindle 222. The follower wheel 221 is circumferentially fixed to the spindle 222 and axially limited. The follower wheel 221 has at least one circumferential protrusion 228.

[0041] The follower wheel assembly 22 includes a follower wheel 221 and a spindle 222. The follower wheel 221 and the spindle 222 are connected by a second connecting key 223 for circumferential fixation. One end of the spindle 222 is equipped with a shaft end elastic retaining ring 224 for axial limiting of the follower wheel 221. Bearings 225 are respectively installed at both ends of the spindle 222, allowing the spindle 222 to be rotatably supported on the bearing housing. Adjusting shims 226 are provided at the ends of the bearings 225 for adjusting the clearance of the bearings 225. A bearing end cap 227 is installed on the outside of the bearing housing, axially fixing the bearings 225 to the ends of the spindle 222, thereby ensuring that the follower wheel 221 operates flexibly and with appropriate clearance.

[0042] In addition, the follower wheel 221 has at least one ring of protrusions 228 on its circumference. These protrusions 228 are located at the edge of the follower wheel 221 and their function is to reduce the contact area between the follower wheel 221 and the outer arc surface 203 of the annular workpiece 200, thereby preventing damage to the coupling fluid wetting layer formed on the workpiece surface by the longitudinal flaw detection system 4, and reducing frictional resistance during movement. Furthermore, the protrusion structure 228 also helps to avoid affecting the uniform distribution of the coupling fluid due to excessive contact area, ensuring stable transmission of ultrasonic flaw detection signals.

[0043] During operation, the entire follower wheel assembly 22 maintains rolling contact with the outer arc surface 203 of the annular workpiece 200, providing support and guidance, enabling the flaw detection device to move smoothly and steadily along the circumference of the workpiece, and assisting in positioning the position of the ultrasonic probe in the longitudinal flaw detection system 4 relative to the outer arc surface 203 of the workpiece.

[0044] like Figure 10 and Figure 11 As shown, in a specific embodiment, the support wheel assembly 23 includes two coaxially arranged outer wheels 231 and one intermediate wheel 232, with the two outer wheels 231 located on opposite axial sides of the intermediate wheel 232. The outer wheels 231 have an outer edge protrusion 233 on their circumferential surface, and the intermediate wheel 232 has a central protrusion 234 on its circumferential surface. The outer wheels and the intermediate wheel can rotate relatively independently. The support wheel assembly 23 is mounted on a sliding block that slides along a sliding rail. The sliding block has a locking mechanism for locking the support wheel assembly 23 in place after it has been adjusted along the sliding rail. The mounting base of the support wheel assembly 23 achieves universal adjustment via a thrust bearing 236. The support wheel assembly 23 also has a limiting bolt and a limiting hole; the limiting bolt can be selectively screwed into the limiting hole to lock the universal function.

[0045] In this application, the support wheel assembly 23 includes two coaxially arranged outer wheels 231 and one intermediate wheel 232, wherein the two outer wheels 231 are located on opposite axial sides of the intermediate wheel 232. The outer circumferential surfaces of the two outer wheels 231 have outer edge protrusions 233 away from the central wheel, and the center of the outer circumferential surface of the intermediate wheel 232 has a central protrusion 234. Both the outer wheels and the intermediate wheel can rotate relatively independently. Specifically, the outer wheels and the intermediate wheel are mounted on a bushing 2316 via a second bearing 2315, and adjacent wheels are separated by a spacer ring 2317. The entire assembly is fixed to a bracket 2314 using bolts with holes 2310, flat washers 2311, slotted nuts 2312, and cotter pins 2313. This three-independent-rotation structure can avoid the additional force caused by the different path lengths of each wheel when traveling along the circumference. At the same time, the design of the outer edge protrusion 233 and the central protrusion 234 reduces the contact area between the support wheel and the end face 201 of the annular workpiece 200, thereby preventing damage to the coupling liquid wetting layer formed by the transverse flaw detection system 3 on the end face 201 of the workpiece.

[0046] The mounting base 235 of the support wheel assembly 23 achieves universal adjustment via a thrust bearing 236, enabling the support wheel to adapt to slight tilts or unevenness of the workpiece end face 201 within a certain angular range. Specifically, the mounting base has two limiting holes 239 through which limiting bolts 238 pass and are locked by nuts 237, thereby limiting the amplitude of universal swing. In addition, the mounting base also has two limiting holes; when universal function is not required, the limiting bolts can be removed from the arc-shaped groove and screwed into the limiting holes, thus disabling the universal adjustment capability of the support wheel assembly 23 and placing it in a fixed support state. This switchable design allows the support wheel assembly 23 to adapt to annular workpieces 200 with different end face 201 shapes, and also provides stable positioning when rigid support is required.

[0047] It is worth noting that, in order to adapt to variations in the end face thickness of different annular workpieces and to ensure stable and effective support for the ultrasonic flaw detection device during the flaw detection process, the support wheel assembly is mounted on a sliding block that slides in conjunction with the slide rail. This sliding block is equipped with a locking mechanism. Once the support wheel assembly is adjusted along the slide rail to a suitable position matching the end face of the workpiece, it can be locked in place by the locking mechanism, thus reliably adapting to the end faces of annular workpieces of different thicknesses and providing effective support for the ultrasonic flaw detection device. It is also worth noting that the sliding block and slide rail used in the support wheel assembly 23 are not the same components as the slider and slide rail used in the drive wheel assembly 21; they are independent guide mechanisms located in different positions.

[0048] like Figure 12-14As shown, in a specific embodiment, the transverse flaw detection system 3 includes a transverse moving platform 31 fixed to the support frame 1 and an ultrasonic probe mounting base 32 slidably mounted on the transverse moving platform 31. The transverse moving platform 31 extends radially along the annular workpiece 200, and the ultrasonic probe mounting base 32 is movable along the length of the transverse moving platform 31 and is also height-adjustable. The ultrasonic probe mounting base 32 includes: a lower plate 37 with a mounting hole for the ultrasonic probe to pass through, the flange of the ultrasonic probe being located on the upper surface of the lower plate 37; an upper plate 38 located above the lower plate 37; a limiting plate 312 bolted to the lower part of the upper plate 38; and a transverse compression spring 39 sleeved on the transverse ultrasonic probe 34, one end abutting against the upper surface of the flange of the ultrasonic probe, and the other end abutting against the lower surface of the limiting plate 312; wherein one end of the transverse ultrasonic probe 34 passes through the mounting hole, and the other end has a predetermined distance from the limiting plate 312.

[0049] In this application, the transverse flaw detection system 3 includes a transverse moving platform 31 fixed to a support frame 1 and an ultrasonic probe mounting base 32 slidably mounted on the transverse moving platform 31. The transverse moving platform 31 extends radially along the annular workpiece 200, and its drive end is connected to a servo motor 33 for driving the ultrasonic probe mounting base 32 to move precisely along the length direction of the transverse moving platform 31. The ultrasonic probe mounting base 32 is connected to the moving slide 35 of the transverse moving platform 31 through an elongated hole 36, thereby enabling height adjustment of the mounting base to accommodate end faces 201 of the annular workpiece 200 of different thicknesses.

[0050] The specific structure of the ultrasonic probe mounting base 32 is as follows: it includes a lower plate 37, an upper plate 38, a limiting plate 312, and a transverse compression spring 39. The lower plate 37 has a mounting hole for the transverse ultrasonic probe 34 to pass through. A flange is located in the middle of the transverse ultrasonic probe 34, and this flange is positioned on the upper surface of the lower plate 37. That is, after the probe passes through the mounting hole in the lower plate 37 from top to bottom, the flange rests on top of the lower plate 37. The upper plate 38 is located above the lower plate 37, and the two are fixed together by several supports or connectors to form a receiving space. The limiting plate 312 is connected to the lower part of the upper plate 38 by bolts 312. Specifically, bolts pass through the upper plate 38, and the limiting plate 312 has two corresponding small holes. After the bolts are inserted into the small holes, the limiting plate 312 is suspended below the upper plate 38. The transverse compression spring 39 is sleeved on the ultrasonic probe, with its lower end abutting against the upper surface of the ultrasonic probe flange and its upper end abutting against the lower surface of the limiting plate 312.

[0051] In this installed state, one end of the transverse ultrasonic probe 34 passes through the mounting hole of the lower plate 37 and extends below the lower plate 37 to contact the end face 201 of the annular workpiece 200. A preset gap is maintained between the other end of the transverse ultrasonic probe 34 and the limiting plate 312, allowing the probe to move upwards when the transverse spring is compressed. By adjusting the screw depth of the bolts between the limiting plate 312 and the upper plate 38, the preload of the transverse compression spring 39 can be changed, thereby adjusting the contact pressure between the transverse ultrasonic probe 34 and the end face 201 of the annular workpiece 200. When the probe needs to be replaced, simply lift the limiting plate 312 upwards to quickly remove the probe.

[0052] In addition, the ultrasonic probe mounting base 32 is equipped with two transverse nozzles 310 of the liquid supply system 5, which are respectively arranged on both sides of the ultrasonic probe to provide coupling fluid to the contact area between the probe and the workpiece end face 201. A laser rangefinder plate is also fixed on the ultrasonic probe mounting base 32, which works in conjunction with the laser rangefinder sensor mounted on the support frame 1 to measure the transverse movement distance of the ultrasonic probe in real time.

[0053] The solution of this application sets up a transverse moving platform 31 and an ultrasonic probe mounting base 32 slidably installed on it, and uses an elongated hole 36 to achieve height adjustment, so that the transverse flaw detection system 3 can move precisely along the radial direction of the annular workpiece 200 and adapt to the end face 201 of workpieces with different thicknesses. By setting up a lower plate 37, an upper plate 38, a limiting plate 312 and a transverse clamping spring 39 sleeved on the transverse ultrasonic probe 34, the probe flange is limited to the lower plate 37 and the spring abuts between the flange and the limiting plate 312, so that the probe and the end face 201 of the workpiece can make elastic floating contact, ensuring uniform and adjustable contact pressure and avoiding rigid collision damage. The limiting plate 312 is bolted to the lower part of the upper plate 38 and can be quickly lifted to facilitate quick replacement of the ultrasonic probe.

[0054] like Figure 15-17As shown, in a specific embodiment, the longitudinal flaw detection system 4 is mounted on the support frame 1, and includes an electric cylinder 41, a hinge assembly of a rotating shaft 44, and a slide rod 45 connected in sequence. The slide rod 45 is provided with an anti-rotation part to prevent circumferential rotation. An open frame structure consisting of a U-shaped bracket 412 and a probe fixing plate 49 is installed at the end of the slide rod 45 away from the hinge assembly of the rotating shaft 44. A longitudinal ultrasonic probe 46 and a longitudinal compression spring 413 are installed on the open frame structure. One end of the longitudinal ultrasonic probe 46 is limited to the probe fixing plate 49, and the other end passes through the U-shaped bracket 412. The longitudinal compression spring 413 is sleeved on the longitudinal ultrasonic probe 46, with one end abutting against the flange of the ultrasonic probe and the other end abutting against the U-shaped bracket 412, so that the longitudinal ultrasonic probe 46 is kept in a compressed state with the probe fixing plate 49. The U-shaped bracket 412 has mounting holes on its two opposite side walls. Magnetic rollers 48 are mounted in each mounting hole via a rotating shaft 44. The two magnetic rollers 48 are located on both sides of the longitudinal ultrasonic probe 46 and are used to adsorb the outer arc surface 203 of the annular workpiece 200.

[0055] In this application, the longitudinal flaw detection system 4 is mounted on the support frame 1, and includes an electric cylinder 41, a hinged assembly of a rotating shaft 44, and a slide rod 45. A rotating shaft mounting seat 43 is fixed to the end of the telescopic rod of the electric cylinder 41, and the rotating shaft 44 is hinged to the rotating shaft mounting seat 43, allowing the rotating shaft 44 to rotate freely within a certain angle range around the hinge axis. One end of the slide rod 45 is provided with a D-shaped sliding shaft 410, and a corresponding D-shaped hole 411 is provided on the rotating shaft 44. The D-shaped sliding shaft 410 is inserted into the D-shaped hole 411 to form a sliding fit, and the fit between the D-shaped structure and the D-shaped hole 411 constitutes an anti-rotation part, so that the slide rod 45 can only slide along the axial direction of the rotating shaft 44 and cannot rotate relative to it.

[0056] One end of the slide rod 45 away from the hinge assembly of the pivot 44 is fixedly connected to an open frame structure, which is composed of a U-shaped bracket 412 and a probe fixing plate 49. Specifically, the U-shaped bracket 412 is formed by three frame structures connected vertically in sequence, and its opening faces the outer arc surface 203 of the annular workpiece 200; the probe fixing plate 49 is fixedly installed to the open end of the U-shaped bracket 412 by bolts, and together with the U-shaped bracket 412, they form an accommodating space.

[0057] A longitudinal ultrasonic probe 46 and a longitudinal compression spring 413 are mounted on an open frame structure. The longitudinal ultrasonic probe 46 has a flange in the middle. One end of the probe passes through a mounting hole on the probe mounting plate 49 from inside the U-shaped bracket 412, confining the flange to the inner side of the probe mounting plate 49; the other end of the probe passes through a through hole on the opposite side wall of the U-shaped bracket 412. The longitudinal compression spring 413 is sleeved on the ultrasonic probe, with one end abutting against the flange of the ultrasonic probe and the other end abutting against the inner wall of the U-shaped bracket 412, thereby pressing the probe flange tightly against the probe mounting plate 49, ensuring a tight fit between the longitudinal ultrasonic probe 46 and the probe mounting plate 49. When the probe end face 201 contacts the workpiece, the probe can overcome the force of the longitudinal compression spring 413 and retract backward, achieving elastic floating contact.

[0058] In addition, mounting holes are provided on the two opposite sidewalls of the U-shaped bracket 412, and two rotating shafts 44 are fixedly mounted in the mounting holes. Each rotating shaft 44 is equipped with a magnetic roller 48, and the two magnetic rollers 48 are located on both sides of the longitudinal ultrasonic probe 46. The outer edge of the magnetic roller 48 is slightly smaller than the length of the longitudinal ultrasonic probe 46 extending outward. When the two magnetic rollers 48 are attracted to the outer arc surface 203 of the annular workpiece 200, the end face 201 of the ultrasonic probe is brought into close contact with the outer arc surface 203 of the workpiece by compressing the longitudinal clamping spring 413. Through the combined action of the magnetic rollers 48 and the clamping spring 413, the longitudinal ultrasonic probe 46 can be tightly fitted to the outer arc surface 203 of the annular workpiece 200 and maintain a constant clamping force. That is, the attraction of the magnetic rollers 48 can prevent the longitudinal ultrasonic probe 46 from sliding out laterally when the flaw detection device moves along the circumference of the workpiece, ensuring that the probe always maintains stable contact with the outer arc surface 203 of the workpiece.

[0059] The solution of this application, by setting an electric cylinder 41, a hinged assembly of a rotating shaft 44, and a slide rod 45 with an anti-rotation part, enables the longitudinal flaw detection system 4 to move precisely along the radial direction of the workpiece. At the same time, the hinged structure of the rotating shaft 44 allows the slide rod 45 to rotate around the hinge axis, thereby adapting to annular workpieces 200 of different diameters and avoiding excessive gap between the probe and the workpiece due to changes in the curvature of the workpiece. By setting an open frame structure composed of a U-shaped bracket 412 and a probe fixing plate 49, and limiting one end of the longitudinal ultrasonic probe 46 to the probe fixing plate 49 and the other end to pass through the U-shaped bracket 412, and cooperating with the longitudinal compression spring 413 sleeved on the probe, the ultrasonic probe is kept in an elastic compression state with the probe fixing plate 49, realizing elastic floating contact between the probe and the outer arc surface 203 of the workpiece, which not only ensures uniform and controllable contact pressure, but also avoids rigid collision damage.

[0060] In one specific implementation, the liquid supply system 5 includes a coupling liquid tank 51, a main valve 52, a multi-way flow control valve, and multiple nozzles; the coupling liquid tank is installed on the flaw detection system and is connected to the main valve 52 and the multi-way flow control valve in sequence through pipelines; the multiple outlets of the multi-way flow control valve are respectively connected to the longitudinal nozzle 47 of the longitudinal flaw detection system 4 and the transverse nozzle 310 of the transverse flaw detection system 3.

[0061] In this application, the fluid supply system 5 includes a coupling fluid tank, a main valve 52, a multi-way flow control valve, and multiple nozzles. The coupling fluid tank is installed on the flaw detection system, specifically fixed to the upper end of the electric cylinder 41 of the longitudinal flaw detection system 4, and is used to store the coupling fluid. The outlet of the coupling fluid tank is connected to the inlet of the main valve 52 via a pipeline, and the outlet of the main valve 52 is connected to the inlet of the multi-way flow control valve via a pipeline.

[0062] The multi-way flow control valve can adopt a four-way valve structure 53, which has four outlets, connected to two nozzles of the longitudinal flaw detection system 4 and two nozzles of the transverse flaw detection system 3 via pipelines. The two nozzles of the longitudinal flaw detection system 4 are installed on both sides of the ultrasonic probe, with the nozzles positioned slightly above the probe center; similarly, the two nozzles of the transverse flaw detection system 3 are also installed on both sides of the ultrasonic probe. The main valve 52 controls the on / off state of the entire liquid supply system 5. The multi-way flow control valve has multiple knobs 54, each corresponding to one outlet, which can independently control the opening and closing of the corresponding nozzle and the spray flow rate.

[0063] During operation, the coupling fluid flows sequentially through the main valve 52 and the multi-way flow control valve, and finally sprays from each nozzle onto the contact area between the ultrasonic probe and the annular workpiece 200. Under the action of gravity, it covers the probe end face 201, forming a stable coupling fluid film, thereby improving the ultrasonic wave transmission capability and ensuring the accuracy of flaw detection.

[0064] In one specific implementation, a monitoring system 6 is also included, which is mounted on the support frame 1. The monitoring system 6 includes a laser rangefinder and a photoelectric sensor. The laser rangefinder includes a first laser rangefinder 62 that cooperates with the transverse laser rangefinder plate 311 of the transverse flaw detection system 3, and a second laser rangefinder 63 that cooperates with the longitudinal laser rangefinder plate 42 of the longitudinal flaw detection system 4. The photoelectric sensor includes a receiver 64 mounted on the support frame 1 and a transmitter 65 mounted on an external sensor bracket 67, for monitoring whether the device has completed a full circle of operation.

[0065] In this application, the monitoring system 6 is mounted on the support frame 1 and includes a laser rangefinder and a photoelectric sensor. The laser rangefinder is divided into a first laser rangefinder 62 and a second laser rangefinder 63. The first laser rangefinder 62 is mounted on the support frame 1 and is positioned opposite to the transverse laser rangefinder plate 311 on the ultrasonic probe mounting base 32 in the transverse flaw detection system 3, for real-time measurement of the transverse movement distance of the ultrasonic probe. The second laser rangefinder 63 is also mounted on the support frame 1 and is positioned opposite to the longitudinal laser rangefinder plate 42 on the telescopic rod of the electric cylinder 41 in the longitudinal flaw detection system 4, for real-time measurement of the longitudinal movement distance of the ultrasonic probe. The photoelectric sensor includes a receiver 64 mounted on the support frame 1 and a transmitter 65 mounted on an external sensor bracket 67. The receiver 64 and transmitter 65 are arranged opposite each other. When the flaw detection device moves along the circumference of the annular workpiece 200, the transmitter 65 continuously emits a signal, and the receiver 64 receives the signal. By detecting the number of signal on / off cycles, it is determined whether the device has completed a full circle of operation, thereby realizing automatic monitoring of full-circumference flaw detection.

[0066] In addition, the monitoring system in this application includes a camera 61 and an alarm light 66. The camera 61 is used to monitor in real time the flaw detection curve displayed by the small flaw detector mounted on the fully automatic ultrasonic flaw detection device. When the camera detects an abnormality in the flaw detection curve, it indicates that there may be a defect inside the tested annular workpiece or that an abnormality has occurred in the flaw detection process. At this time, the monitoring system sends a signal to control the alarm light 66 to flash, issuing a visual alarm to remind the operator to handle the situation promptly. Simultaneously, this abnormal signal can also be transmitted to the control system, which will immediately stop the machine, thereby avoiding missed detections or misjudgments and ensuring the accuracy and reliability of the flaw detection results.

[0067] In one specific implementation, the annular workpiece 200 is a precision-machined forged blank of a large gear ring.

[0068] In this application, the annular workpiece 200 is a precision-machined forged blank of a large gear ring, particularly for large-size gear rings used in wind turbine gearboxes. In other embodiments, the annular workpiece 200 can also be other annular structures requiring fully automated ultrasonic testing, such as large bearing rings 225, slewing bearing rings, flange rings, hub rings, etc. These annular workpieces 200 typically have large diameters and thicknesses, and require high levels of internal quality and surface defect detection. The flaw detection device described in this application can achieve automated and highly efficient flaw detection operations.

[0069] While numerous embodiments of this application have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will arise for those skilled in the art without departing from the spirit and intent of this application. It should be understood that various alternatives to the embodiments of this application described herein may be employed in the practice of this application. The appended claims are intended to define the scope of protection of this application and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. An ultrasonic flaw detection device (100) for detecting flaws in annular workpieces, characterized in that, include: The support frame (1) is a frame structure disposed above the end face (201) of the annular workpiece (200); The walking clamping mechanism (2) is installed on the lower part of the support frame (1) and is used to clamp the annular workpiece (200) and move along its circumference. The flaw detection system includes an ultrasonic flaw detector (10) mounted on the support frame (1), and a transverse flaw detection system (3) and / or a longitudinal flaw detection system (4) connected to the ultrasonic flaw detector (10), wherein the transverse flaw detection system (3) is used to detect flaws on the end face (201) of the annular workpiece (200), and the longitudinal flaw detection system (4) is used to detect flaws on the arc surface of the annular workpiece (200); A fluid supply system (5) is used to supply coupling fluid to the end face (201) and inner and outer arc surfaces of the annular workpiece (200); as well as The control system (7) is mounted on the support frame (1) and is used to control the walking action of the walking clamping mechanism (2) and the scanning action of the flaw detection system.

2. The ultrasonic flaw detection device (100) according to claim 1, characterized in that, The walking clamping mechanism (2) includes: a drive wheel assembly (21) for traveling along the inner arc surface (202) of the annular workpiece (200), a follower wheel assembly (22) for traveling along the outer arc surface (203) of the annular workpiece (200), and a support wheel assembly (23) for supporting and rotating on the end face (201) of the annular workpiece (200). The drive wheel assembly (21) includes a drive unit and a drive wheel (218) arranged on the inner arc surface (202) of the annular workpiece (200); the drive wheel (218) is provided with a switch (219), which is used to turn on or off the magnetic attraction function on the drive wheel (218) so that the drive wheel (218) presses against the inner arc surface (202) of the annular workpiece (200) to increase the friction.

3. The ultrasonic flaw detection device (100) according to claim 2, characterized in that, The walking clamping mechanism (2) or support frame (1) is fixed with a slide rail (2111), and the drive wheel assembly (21) is mounted on a slider (2110) that slides in cooperation with the slide rail (2111). The slider (2110) is provided with a locking device (2112) for locking and fixing the drive wheel assembly (21) after it has been adjusted into place along the slide rail.

4. The ultrasonic flaw detection device (100) according to claim 2, characterized in that, The follower wheel assembly (22) includes a follower wheel (221) and a spindle (222), wherein the follower wheel (221) and the spindle (222) are circumferentially fixed and axially limited; The follower wheel (221) has at least one circumferential protrusion (228).

5. The ultrasonic flaw detection device (100) according to claim 2, characterized in that, The support wheel assembly (23) includes two outer wheels (231) and one intermediate wheel (232) arranged coaxially, with the two outer wheels (231) located on opposite sides of the intermediate wheel (232) along the axial direction; the outer wheels (231) have an outer edge protrusion (233) on their circumferential surface, and the intermediate wheel (232) has a central protrusion (234) on its circumferential surface, and the outer wheels and the intermediate wheel can rotate relatively independently; The support wheel assembly (23) is mounted on a sliding block that slides in conjunction with the sliding rail; The sliding block is provided with a locking mechanism for locking and fixing the support wheel assembly (23) after it has been adjusted into place along the slide rail.

6. The ultrasonic flaw detection device (100) according to claim 5, characterized in that, The mounting base of the support wheel assembly (23) is adjusted in all directions by means of a thrust bearing (236); the support wheel assembly (23) is also provided with a limit bolt and a limit hole, and the limit bolt can be selectively screwed into the limit hole to lock the universal function.

7. The ultrasonic flaw detection device (100) according to claim 1, characterized in that, The transverse flaw detection system (3) includes a transverse moving platform (31) fixed on the support frame (1) and an ultrasonic probe mounting base (32) slidably mounted on the transverse moving platform (31). The transverse moving platform (31) extends radially along the annular workpiece (200), and the ultrasonic probe mounting base (32) can move along the length direction of the transverse moving platform (31) and can also be height adjusted.

8. The ultrasonic flaw detection device (100) according to claim 7, characterized in that, The ultrasonic probe mounting base (32) includes: The lower plate (37) has mounting holes for the ultrasonic probe to pass through, and the flange of the ultrasonic probe is located on the upper surface of the lower plate (37). The upper plate (38) is located above the lower plate (37); A limiting plate (312), which is bolted to the underside of the upper plate (38); and A transverse compression spring (39) is sleeved on a transverse ultrasonic probe (34), with one end abutting against the upper surface of the flange of the ultrasonic probe and the other end abutting against the lower surface of the limiting plate (312). The transverse ultrasonic probe (34) has one end passing through the mounting hole and the other end having a preset distance from the limiting plate (312).

9. The ultrasonic flaw detection device (100) according to claim 8, characterized in that, The longitudinal flaw detection system (4) is installed on the support frame (1) and includes an electric cylinder (41), a rotating shaft (44) hinge assembly and a slide rod (45) connected in sequence. The slide rod (45) is provided with an anti-rotation part to prevent it from rotating in the circumferential direction. The end of the slide bar (45) away from the hinge assembly of the pivot (44) is equipped with an open frame structure consisting of a U-shaped bracket (412) and a probe fixing plate (49); a longitudinal ultrasonic probe (46) and a longitudinal compression spring (413) are installed on the open frame structure. One end of the longitudinal ultrasonic probe (46) is confined to the probe fixing plate (49), and the other end passes through the U-shaped bracket (412); the longitudinal compression spring (413) is sleeved on the longitudinal ultrasonic probe (46), with one end abutting against the flange of the ultrasonic probe and the other end abutting against the U-shaped bracket (412), so that the longitudinal ultrasonic probe (46) is kept in a compressed state with the probe fixing plate (49).

10. The ultrasonic flaw detection device (100) according to claim 9, characterized in that, The U-shaped bracket (412) has mounting holes on its two opposite side walls. Magnetic rollers (48) are mounted in each mounting hole via a rotating shaft (44). The two magnetic rollers (48) are located on both sides of the longitudinal ultrasonic probe (46) and are used to adsorb the outer arc surface (203) of the annular workpiece (200).

11. The ultrasonic flaw detection device (100) according to claim 1, characterized in that, The liquid supply system (5) includes a coupling liquid tank, a main valve (52), a multi-way flow control valve, and multiple nozzles; The coupling liquid tank is installed on the flaw detection system and is connected in sequence to the main valve (52) and the multi-way flow control valve through pipelines. The multiple outlets of the multi-way flow control valve are respectively connected to the nozzles of the longitudinal flaw detection system (4) and the transverse flaw detection system (3).

12. The ultrasonic flaw detection device (100) according to claim 1, characterized in that, It also includes a monitoring system (6) mounted on the support frame (1), the monitoring system (6) including a laser rangefinder and a photoelectric sensor; The laser ranging sensor includes a first laser ranging sensor (62) that cooperates with the transverse laser ranging plate (311) of the transverse flaw detection system (3), and a second laser ranging sensor (63) that cooperates with the longitudinal laser ranging plate (42) of the longitudinal flaw detection system (4). The photoelectric sensor includes a receiver (64) mounted on a support frame (1) and a transmitter (65) mounted on an external sensor bracket (67) for monitoring whether the device has completed a full circle of operation.

13. The ultrasonic flaw detection device (100) according to claim 1, characterized in that, The annular workpiece (200) is a precision-machined forged blank of a large gear ring.

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