A flaw detection mechanical structure

Abstract

The present invention relates to the field of flaw detection equipment, a flaw detection mechanical structure, including a ray section assembly for emitting flaw detection rays, a receiving section assembly for receiving the flaw detection rays emitted by the ray section, a swing frame assembly for supporting the ray section assembly, a swing drive mechanism for driving the swing frame assembly to swing, and a bracket assembly, wherein the swing frame assembly is hinged on the bracket assembly, the power end of the swing drive mechanism is connected to the side of the swing frame assembly, the swing drive mechanism can drive the swing frame assembly to swing, and drive the ray section assembly to emit flaw detection rays laterally. This mechanical structure can emit flaw detection rays laterally through the swing frame assembly, and can detect weld defects laterally. After the ray section assembly swings, the flat-panel detector is always parallel to the detection object, which is convenient for adjusting the focal length.

Description

Technical Field

[0001] The invention relates to the field of flaw detection equipment and is applied to the detection of small-caliber, serpentine tube screens and butt welds, in particular to a flaw detection mechanical structure. Background Art

[0002] The function of flaw detection equipment is to detect cracks or defects inside metal materials or components. The inspection scope includes weld surface defect inspection. Check the welding quality such as weld surface cracks, incomplete penetration and weld leakage; inner cavity inspection. Check surface cracks, peeling, wire drawing, scratches, pits, protrusions, spots, corrosion and other defects; state inspection. After certain products (such as worm gear pumps, engines, etc.) are working, endoscopic inspection is carried out according to the items specified in the technical requirements; assembly inspection. When there are requirements and needs, use Yatai Optoelectronics Industrial Video Endoscope to check the assembly quality; after assembly or a certain process is completed, check whether the assembly position of each component meets the requirements of the drawing or technical conditions; whether there are assembly defects; excess material inspection. Check the residual internal chips, foreign objects and other excess materials in the inner cavity of the product.

[0003] For example, a Chinese patent (publication number: CN103336056B) discloses a gantry-type steel pipe ultrasonic flaw detector, including a control system, a gantry, a flaw detection trolley, a rotating roller device, a loading device and a unloading device. The rotating roller device is used to drive the steel pipe to be inspected to rotate. The loading device includes a loading platform and a single-branch turning device. The single-branch turning device loads the steel pipes to be inspected into the material-discharging device one by one; the unloading device includes a unloading platform and a material-discharging device. The unloading platform is provided with an inclined platform sheet. The material-discharging device loads the steel pipe to be inspected into the rotating roller device for rotation detection, and guides the steel pipe after the detection is completed into the unloading platform. The present invention is provided with an automatic loading device and unloading device to cooperate with other components to realize automatic ultrasonic flaw detection of steel pipes, shorten the time for hoisting preparation during the detection process and the time for hoisting the steel pipe after the detection, improve the detection efficiency, and reduce the labor intensity of workers.

[0004] The above-mentioned equipment achieves flaw detection on the steel pipe by rotating the inspected workpiece, but if this equipment needs to detect flaws on the side of the inspected workpiece, it cannot perform the flaw detection operation, that is, the existing equipment has the following disadvantages: the flaw detection range of the existing equipment is small; the existing equipment does not have a focusing function, resulting in unsatisfactory imaging clarity and other disadvantages. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a flaw detection mechanical structure, which can perform full-angle flaw detection on workpiece welds, especially for the detection of small-caliber, serpentine tube screens, and butt welds.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A flaw detection mechanical structure includes a radiation part assembly for emitting flaw detection rays, a receiving part assembly for receiving the flaw detection rays emitted by the radiation part, a swing frame assembly for supporting the radiation part assembly, a swing drive mechanism for driving the swing frame assembly to swing, and a bracket assembly, wherein the swing frame assembly is hinged on the bracket assembly, the power end of the swing drive mechanism is connected to the side of the swing frame assembly, and the swing drive mechanism can drive the swing frame assembly to swing and drive the radiation part assembly to emit flaw detection rays laterally.

[0008] Preferably, the flaw detection mechanical structure also includes a fixed frame assembly, the receiving part assembly is installed on the fixed frame assembly, the fixed frame assembly is connected to the swing frame assembly, and the position of the fixed frame assembly moves in conjunction with the swing frame assembly when the swing frame assembly swings, and the ray receiving surface of the receiving part assembly remains horizontal.

[0009] Preferably, the swing frame assembly and the fixed frame assembly can enable angle compensation between the two axes through a gear mechanism, a toothed belt pulley mechanism, a chain mechanism, etc., so that the flat-panel detector on the fixed frame always remains parallel to the detection object.

[0010] Preferably, the support assembly includes a support column, on which a first gear is fixedly mounted; the swing frame assembly includes a swing frame column, on which a second gear and a third gear are mounted, wherein the third gear is fixed to the swing frame column, and the second gear is connected to the swing frame column via a bearing and swings coaxially with the fixed frame; the three gears constitute a revolving gear train, and the first gear has the same number of teeth and module as the second gear.

[0011] Preferably, the power output end of the swing drive mechanism is connected to the middle section of the swing frame column.

[0012] Preferably, the connection between the fixed frame assembly and the swing frame assembly is located below the connection between the swing drive mechanism and the swing frame assembly.

[0013] Preferably, the swing frame assembly is a gantry structure, which includes a swing frame upper beam with a slide rail, the radiation unit assembly is mounted on the slide rail of the swing frame upper beam, and the radiation unit assembly is driven by a radiation unit horizontal drive motor, which can drive the radiation unit assembly to move along the slide rail by itself;

[0014] The receiving part assembly is mounted on the fixed frame assembly, which includes a fixed frame guide rail. The receiving part assembly is driven by a receiving part horizontal drive motor, which can drive the receiving part assembly to move along the slide rail by itself, and the fixed frame guide rail and the slide rail of the crossbeam on the swing frame are parallel to each other.

[0015] Preferably, the ray part assembly and / or the receiving part assembly is equipped with a telescopic mechanism, which drives the ray emitting end of the ray part assembly and / or the ray receiving surface of the receiving part assembly to vertically displace.

[0016] Preferably, a limit assembly is provided on the side of the swing frame assembly, and two limit ends of the limit assembly are used in conjunction with the bracket assembly. The limit assembly is used to limit the extreme swing angle of the swing frame assembly.

[0017] Preferably, when the swing frame assembly is located at the extreme swing position, the angle between the flaw detection ray emitted by the ray part assembly and the vertical plane is 30°.

[0018] The beneficial effects of using the present invention are:

[0019] This mechanical structure can be used to detect large objects or objects with complex defects. It has a reasonable and stable structure and high detection efficiency.

[0020] This mechanical structure can emit flaw detection rays laterally through the swing frame assembly, and can detect weld defects laterally. After the ray assembly swings, in order to allow the receiving surface of the receiving assembly to receive the flaw detection rays, the fixed frame assembly linked with the swing frame assembly is used to match the positions of the ray assembly and the receiving assembly.

[0021] In general, this mechanical structure controls the movement of the radiation assembly in the X and Y directions, controls the swing of the radiation assembly in the X direction through the swing frame assembly, and controls the rotation of the radiation assembly in the Y direction through the swing shaft part, so as to realize the flaw detection of the top surface of the workpiece, the surrounding sides, and other multiple angles and dimensions. In addition, the built-in telescopic device of the receiving assembly and the radiation assembly is used to adjust the flaw detection focus effect. This device can perform flaw detection on the workpiece at multiple angles and dimensions, and at the same time ensure accurate flaw detection focus and clear flaw detection effect.

[0022] This structure is particularly suitable for the detection of small-caliber, serpentine tube panels, and butt welds. If the tube panel is not placed correctly, the receiving part assembly can be rotated to adjust it. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure is a schematic diagram of the overall structure of a flaw detection mechanical structure of the present invention.

[0024] Figure 2 The present invention is a schematic diagram of the structure of a flaw detection mechanical structure detection room.

[0025] Figure 3 The present invention is a schematic diagram of a flaw detection mechanical structure detection assembly.

[0026] Figure 4 It is a schematic diagram of a gear transmission gear mechanism of a flaw detection mechanical structure of the present invention.

[0027] Figure 5 The present invention is a schematic diagram of the structure of a flaw detection mechanical structure support assembly.

[0028] Figure 6 The present invention is a schematic diagram of the structure of a fixing frame assembly of a flaw detection mechanical structure.

[0029] Figure 7 The present invention is a schematic diagram of the structure of a swing frame assembly of a flaw detection mechanical structure.

[0030] Figure 8 The present invention is a schematic diagram of the assembly structure of a flaw detection mechanical structure receiving part.

[0031] Fig. 9 This is a schematic structural diagram of another angle of the ray part assembly of a flaw detection mechanical structure of the present invention.

[0032] Fig.10 The present invention is a schematic structural diagram of a flaw detection mechanical structure radiation part assembly.

[0033] Fig.11 It is a schematic diagram of the X-axis swing effect of a swing frame assembly of a flaw detection mechanical structure of the present invention.

[0034] Fig.12 It is a schematic diagram of the Y-axis rotation effect of a ray source of a flaw detection mechanical structure of the present invention.

[0035] Fig.13 for Fig.12 A partial enlarged view of part B in the middle.

[0036] Fig.14 It is a schematic diagram of the flaw detection effect after the X-ray assembly is swung.

[0037] Fig.15 It is a schematic diagram of the flaw detection effect after the X-ray assembly swings, rotates, and swings and rotates.

[0038] Reference numerals include:

[0039] 100-workpiece output track, 200-protective ear room, 300-testing room, 310-testing room body, 320-feeding port, 330-side sliding door, 340-ventilation duct, 400-bracket assembly, 410-bracket base, 420-bracket column, 430-bracket guide rail, 440-angle selection motor, 450-bracket drive rack, 460-bracket drive motor, 470-bracket driven gear, 500-solid Fixed frame assembly, 510-fixed frame guide rail, 520-fixed frame column, 530-fixed frame connecting column, 600-swing frame assembly, 610-swing frame lower beam, 620-swing frame column, 630-swing frame upper beam, 640-swing frame connecting column, 650-limiting component, 660-swing gear set, 700-receiving part assembly, 710-download platform, 720-upload platform, 730-rotating gear set, 740-ray receiving group Components, 750-grating stage lifting drive device, 760-grating stage lifting rack, 770-grating stage lifting guide column, 780-grating stage lifting guide sleeve, 790-lower mounting plate, 791-grating stage translation slider, 792-grating stage translation drive gear, 800-ray unit assembly, 810-ray unit stage, 821-ray unit horizontal slider, 822-ray unit horizontal drive motor, 823-ray unit water Flat driving gear, 831-vertical driving motor of ray section, 832-vertical rack of ray section, 833-vertical guide rod of ray section, 840-ray generator, 850-ray grating assembly, 860-ray source rotation assembly, 861-swinging driving gear, 862-swinging shaft section, 863-swinging driven gear, 870-cable, 880-cable bracket; G1-first gear, G2-second gear, G3-third gear. DETAILED DESCRIPTION

[0040] In order to facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Typical embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0041] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0043] The present invention is described in detail below with reference to the accompanying drawings.

[0044] like Figure 1-Figure 13 As shown, a flaw detection mechanical structure includes a radiation part assembly 800 for emitting flaw detection rays, a receiving part assembly 700 for receiving the flaw detection rays emitted by the radiation part, a swing frame assembly 600 for supporting the radiation part assembly 800, a swing drive mechanism for driving the swing frame assembly 600 to swing, and a bracket assembly 400, wherein the swing frame assembly 600 is hinged on the bracket assembly 400, the power end of the swing drive mechanism is connected to the side of the swing frame assembly 600, the swing drive mechanism can drive the swing frame assembly 600 to swing, and drive the radiation part assembly 800 to emit flaw detection rays laterally.

[0045] A flaw detection mechanical structure also includes a fixed frame assembly 500, a receiving part assembly 700 is installed on the fixed frame assembly 500, the fixed frame assembly 500 is connected to the swing frame assembly 600, and when the swing frame assembly 600 swings, the position of the fixed frame assembly 500 is linked to follow, and the radiation receiving surface of the receiving part assembly 700 remains horizontal.

[0046] The swing frame assembly 600 and the fixed frame assembly 500 are linked via a gear mechanism, and the gear serves as an angle compensation mechanism.

[0047] The bracket assembly 400 includes a bracket column 420, on which a first gear G1 is fixedly disposed; the swing frame assembly 600 includes a swing frame column 620, on which a second gear G2 and a third gear G3 are disposed, wherein the third gear G3 is fixed on the swing frame column 620, and the second gear G2 is connected to the swing frame column 620 via a bearing, and the first gear G1 and the third gear G3 are transmitted via the second gear G2.

[0048] In this embodiment, the bracket driven gear 470 is the first gear G1, and the swing gear set 660 is the second gear G2 and the third gear G3.

[0049] The power output end of the swing drive mechanism is connected to the middle section of the swing frame column 620.

[0050] The connection between the fixed frame assembly 500 and the swing frame assembly 600 is located below the connection between the swing drive mechanism and the swing frame assembly 600 .

[0051] The swing frame assembly 600 is a gantry structure, which includes a swing frame upper beam 630 with a slide rail, and the radiation unit assembly 800 is mounted on the slide rail of the swing frame upper beam 630. The radiation unit assembly 800 is built with a radiation unit horizontal drive motor 822, and the radiation unit horizontal drive motor 822 can drive the radiation unit assembly 800 to move along the slide rail.

[0052] The receiving part assembly 700 is mounted on the fixed frame assembly 500, and the fixed frame assembly 500 includes a fixed frame guide rail 510. The receiving part assembly 700 is driven by a receiving part horizontal driving motor, and the receiving part horizontal driving motor can drive the receiving part assembly 700 to move along the slide rail by itself, and the fixed frame guide rail 510 and the slide rail of the crossbeam 630 on the swing frame are parallel to each other.

[0053] The ray part assembly 800 and / or the receiving part assembly 700 are built with a telescopic mechanism, which drives the ray emitting end of the ray part assembly 800 and / or the ray receiving surface of the receiving part assembly 700 to vertically displace.

[0054] A limit assembly 650 is provided on the side of the swing frame assembly 600 . The two limit ends of the limit assembly 650 are used in conjunction with the bracket assembly 400 . The limit assembly 650 is used to limit the extreme swing angle of the swing frame assembly 600 .

[0055] When the swing frame assembly 600 is at the extreme swing position, the angle between the flaw detection ray emitted by the ray unit assembly 800 and the vertical plane is 30°-45°.

[0056] This mechanical structure can emit flaw detection rays laterally through the swing frame assembly 600, and can detect weld defects laterally. After the ray assembly 800 swings, in order to allow the receiving surface of the receiving assembly 700 to receive the flaw detection rays, the fixed frame assembly 500 linked with the swing frame assembly 600 is used to match the positions of the ray assembly 800 and the receiving assembly 700.

[0057] Fig.14 This is a schematic diagram of the flaw detection effect after the X-ray assembly is swung 800 degrees. Fig.15 It is a schematic diagram of the combined flaw detection effect of the radiation part assembly 800 after swinging, rotating, and swinging and rotating.

[0058] The overall structure and coordinated use structure of the present mechanical structure are described in detail as follows.

[0059] The present embodiment provides a flaw detection mechanical structure, including a radiation part assembly 800 for emitting flaw detection rays, a receiving part assembly 700 for receiving the flaw detection rays emitted by the radiation part assembly 800, and a swing frame assembly 600, wherein the radiation part assembly 800 is arranged on the swing frame assembly 600, and the swing frame assembly can drive the radiation part assembly 800 to shift in the X direction, so that the ray emitting end of the radiation part assembly 800 is obliquely directed toward the workpiece to be inspected in the X direction, and the ray receiving end of the receiving part assembly 700 is always opposite to the ray emitting end of the radiation part assembly 800.

[0060] The radiation part assembly 800 has a built-in radiation source rotating assembly 860, which can drive the radiation emitting end of the radiation part assembly 800 to shift in the Y direction, so that the radiation emitting end of the radiation part assembly 800 is obliquely directed toward the workpiece to be inspected in the Y direction, and the X direction and the Y direction are perpendicular to each other in the plane.

[0061] The swing frame assembly 600 also includes an upper crossbeam 630 arranged along the Y direction, and the upper crossbeam 630 of the swing frame has a built-in slide rail. The radiation part assembly 800 is movably arranged on the slide rail of the upper crossbeam 630 of the swing frame, so that the radiation part assembly 800 can move in the Y direction along the slide rail of the upper crossbeam 630 of the swing frame.

[0062] A flaw detection mechanical structure also includes a support rail 430 arranged along the X direction, and the swing frame assembly 600 is movably arranged on the support rail 430 and can drive the ray part assembly 800 to move along the X direction.

[0063] The swing frame assembly 600 has a built-in limit component 650 , which is used to limit the extreme swing angle of the swing frame assembly 600 .

[0064] A flaw detection mechanical structure also includes a fixed frame assembly 500 , which has a built-in fixed frame guide rail 510 arranged along the Y direction, and the receiving part assembly 700 can slide on the fixed frame guide rail 510 .

[0065] The receiving part assembly 700 includes a carrier, a rotating gear set 730, a ray receiving component 740 and a grating carrier rotation drive mechanism. The ray receiving component 740 is rotatably arranged on the carrier. The power end of the grating carrier rotation drive mechanism is connected to the ray receiving component 740 through the rotating gear set 730, and can drive the ray receiving component 740 to rotate around the Z axis.

[0066] The ray receiving end of the receiving part assembly 700 can be extended and retracted vertically, and the ray emitting end of the ray part assembly 800 can be extended and retracted along the mounting base of the ray part assembly 800, so that the distance between the ray receiving end of the receiving part assembly 700 and the ray emitting end of the ray part assembly 800 can be adjusted to control the focus of the flaw detection.

[0067] The receiving part assembly 700 includes a receiving part carrier, a ray receiving component 740, a grating carrier lifting rack 760 and a grating carrier lifting drive mechanism. The grating carrier lifting rack 760 is vertically fixed on the receiving part carrier, and the power end of the grating carrier lifting drive mechanism is meshed with the grating carrier lifting rack 760 and drives the ray receiving component 740 to rise and fall vertically.

[0068] The radiation unit assembly 800 includes a radiation unit carrier 810, a radiation unit vertical drive motor 831, a radiation unit vertical rack 832 and a radiation generator 840. The radiation unit vertical drive motor 831 is fixed on the radiation unit carrier 810, the lower end of the radiation unit vertical rack 832 is connected to the radiation generator 840, and the power end of the radiation unit vertical drive motor 831 is meshed with the vertical rack 832 of the radiation unit to drive the ray generator 840 to move vertically along the radiation unit carrier 810 as a reference.

[0069] In general, this mechanical structure controls the movement of the radiation assembly 800 in the X and Y directions, controls the swing of the radiation assembly 800 in the X direction through the swing frame assembly 600, and controls the rotation of the radiation assembly 800 in the Y direction through the swing shaft part 862, so as to realize the flaw detection of the top surface and the surrounding sides of the workpiece at multiple angles and dimensions. In addition, the built-in telescopic device of the receiving assembly 700 and the radiation assembly 800 is used to adjust the flaw detection focus effect. This device can perform flaw detection on the workpiece at multiple angles and dimensions, and at the same time can ensure accurate flaw detection focus and clear flaw detection effect.

[0070] Specifically, Figure 1 As shown, the device has a workpiece output track 100, which can transport the workpiece to be inspected in the X direction to the front protection ear room 200, the inspection room 300 and the rear protection ear room 200. Figure 2 As shown, the detection chamber 300 in the present device includes a detection chamber body 310, and the detection chamber body 310 is a cubic house structure. A feed port 320 is provided on the front of the detection chamber body 310, and a discharge port is provided on the back of the wall where the corresponding feed port 320 is located. The feed port 320 and the discharge port are directly opposite to each other, and a workpiece output track 100 is provided through the feed port 320 and the discharge port, so that the workpiece to be detected enters the detection chamber 300 through the workpiece output track 100.

[0071] A side sliding door 330 is provided on the side of the detection chamber body 310, and the staff can inspect and maintain the internal mechanism by opening the side sliding door 330. A ventilation duct 340 is provided on the top surface of the detection chamber body 310, and the ventilation duct 340 is connected to the inside of the detection chamber body 310, and the heat inside the detection chamber body 310 can be quickly discharged through the ventilation duct 340. Preferably, an active exhaust component is provided inside the ventilation duct 340 or near the open end of the ventilation duct 340, which can actively drive the air in the detection chamber body 310 to be discharged from the test chamber through the ventilation duct 340.

[0072] The support assembly 400 , the fixing frame assembly 500 , the swing frame assembly 600 , the receiving unit assembly 700 and the radiation unit assembly 800 in the mechanical structure are all arranged in the detection room 300 .

[0073] like Figure 5 As shown, in this embodiment, the bracket assembly 400 includes a bracket base 410, a bracket column 420, a bracket guide rail 430, a swing angle selection motor 440, a bracket drive rack 450, a bracket drive motor 460 and a bracket driven gear 470, wherein the bracket base 410 is a horizontally arranged grid-like frame, and bracket guide rails 430 are respectively arranged on the left and right sides of the bracket base 410, and corresponding sliders are arranged on the bracket base 410, so that the bracket base 410 can slide along the bracket guide rails 430 in the X direction, and the main body of the bracket base 410 extends in the Y direction. A support driving rack 450 is provided in the middle of the support base 410, and a support driving motor 460 is correspondingly provided in the middle of the support base 410. A gear is installed at the power end of the support driving motor 460, and the gear is meshed with the support driving rack 450, so that the support base 410 can translate in the X direction. Support columns 420 extending vertically upward are provided at both ends of the support base 410, and a swing angle selection motor 440 and a support driven gear 470 are respectively provided at the top of the two support columns 420, wherein the swing angle selection motor 440 can drive the swing frame assembly 600 to swing, and the support driven gear 470 serves as a driven connecting member of the swing frame assembly 600.

[0074] In other embodiments, the bracket guide rail 430 can be replaced with other guide structures, such as a guide column device, and the bracket drive rack 450 and the bracket drive motor 460 matching assembly can be replaced with an electric cylinder, a pneumatic cylinder, a gear transmission assembly or other similar power devices.

[0075] like Figure 6As shown, the fixed frame assembly 500 includes a fixed frame guide rail 510, a fixed frame column 520, and a fixed frame connecting column 530, wherein the fixed frame guide rail 510 extends along the Y direction, and the two ends of the fixed frame guide rail 510 are respectively provided with fixed frame columns 520 extending upward, and a fixed frame connecting column 530 is arranged on the outer side of each column, and a bearing is arranged on the outer ring surface of the fixed frame connecting column 530.

[0076] like Figure 7 As shown, the swing frame assembly 600 includes a swing frame lower beam 610, two swing frame columns 620, a swing frame upper beam 630, a swing frame connecting column 640, a limit assembly 650 and a swing gear set 660, wherein both ends of the swing frame lower beam 610 are connected to the lower ends of the swing frame columns 620, and the upper ends of the swing frame columns 620 are connected to both ends of the swing frame upper beam 630, so that the swing frame upper beam 630, the swing frame lower beam 610 and the two swing frame columns 620 form a gantry structure, a swing frame connecting column 640 is arranged on the outer side surfaces of the two swing frame columns 620, and the swing frame connecting column 640 is perpendicular to the outer side surfaces of the swing frame connecting column 640, a limit assembly 650 is arranged on the outer side surface of one swing frame column 620, and a swing gear set 660 is arranged on the outer side surface of the other swing frame column 620.

[0077] The limiting assembly 650 includes an arc-shaped plate-like body, and limiting heads are respectively arranged at both ends of the plate-like body to limit the swing limit angle of the swing gantry structure. Its working principle will be described in detail later.

[0078] like Figure 3 As shown, after the bracket assembly 400 is placed on a plane, the swing frame connecting column 640 is inserted into the hollow position inside the bracket driven gear 470. A bearing is built into the hollow position inside the bracket driven gear 470, so that the swing frame assembly 600 can swing in the X direction with the bracket assembly 400 as the base.

[0079] It can be seen that the swing angle motor 440 is arranged near the middle of the swing frame column 620, so that the swing angle motor 440 outputs a smaller torque to drive the gantry structure to rotate. The swing gear set 660 cooperates with the bracket driven gear 470.

[0080] During the rotation of the gantry structure, the limit heads at both ends of the limit assembly 650 are respectively located between a support column 420. When the gantry structure rotates to the extreme position, one limit head abuts against the side of the support column 420. The relative positions of the two limit heads and the support column 420 limit the extreme rotation angle of the gantry structure.

[0081] In other embodiments, the fixing frame assembly 500 is connected to the swing frame column 620 through the fixing frame connecting columns 530 at both ends, wherein the outer ring of the bearing on the fixing frame connecting column 530 is fixed on the swing frame column 620, such as Figure 3As shown, when the gantry structure swings to the moving angle, the fixing frame assembly 500 hangs down according to its own gravity, so that the fixing frame column 520 always maintains a vertical state, and the guide surface of the fixing frame guide rail 510 also always remains in an upward position.

[0082] like Figure 8 As shown, the receiving part assembly 700 includes a lower platform 710, an upper platform 720, a rotating gear set 730, a ray receiving component 740, a grating stage lifting drive device 750, a grating stage lifting rack 760, a grating stage lifting guide column 770, a grating stage lifting guide sleeve 780, a lower mounting plate 790, a grating stage translation slider 791 and a grating stage translation drive gear 792.

[0083] Among them, the unloading platform 710 and the upper loading platform 720 are relatively parallel, a rotating gear set 730 is provided on the top surface of the upper loading platform 720, a grating platform lifting drive device 750 is arranged between the unloading platform 710 and the upper loading platform 720, and a grating platform translation slider 791 and a grating platform translation drive gear 792 are arranged on the ground of the unloading platform 710.

[0084] A power device for driving the ray receiving component 740 to rotate is arranged between the upper loading platform 720 and the unloading platform 710. The rotating end of the power device is connected to the rotating gear set 730, so that the power device for driving the ray receiving component 740 to rotate changes speed through the rotating gear set 730, thereby driving the ray receiving component 740 to rotate in the horizontal direction.

[0085] Combination Fig. 9 As shown, grating stage lifting guide posts 770 are respectively arranged at the four corners of the bottom surface of the upper stage 720, and grating stage lifting guide sleeves 780 are arranged at the vertically corresponding positions of the lower stage 710. The grating stage lifting guide sleeves 780 cooperate with the grating stage lifting guide posts 770 to restrict the upper stage 720 and the lower stage 710 to move in only one direction, and cannot rotate or deviate. The grating stage lifting rack 760 is vertically fixed on the receiving stage, and the power end of the grating stage lifting drive mechanism is meshed with the grating stage lifting rack 760, and drives the ray receiving component 740 to lift vertically.

[0086] The main body of the lower mounting plate 790 extends downward, and a grating carrier translation slider 791 is provided on the side of the lower mounting plate 790 and the bottom of the download platform 710. The grating carrier translation slider 791 is installed on the fixed frame guide rail 510 to control the moving direction of the receiving part assembly 700 in the connection direction to avoid deflection and shaking of the receiving part assembly 700 when moving on the fixed frame guide rail 510.

[0087] A rack is provided on the side of the fixed frame guide rail 510, and the rack is meshed with the grating carrier translation driving gear 792. The grating carrier translation driving gear 792 is connected to the power end of the grating translation driving motor, which can drive the receiving part assembly 700 to move in the Y direction.

[0088] like Fig. 9 As shown, the ray unit assembly 800 includes a ray unit carrier 810, a ray unit horizontal slider 821, a ray unit horizontal drive motor 822, a ray unit horizontal drive gear 823, a ray unit vertical drive motor 831, a ray unit vertical rack 832, a ray unit vertical guide rod 833, a ray generator 840, a ray grating assembly 850, a ray source rotation assembly 860, a swing drive gear 861, a swing driven gear 863, a swing shaft portion 862, a cable 870 and a cable bracket 880.

[0089] Specifically, the ray unit carrier 810 is provided with a ray unit horizontal drive motor 822, a ray unit horizontal slider 821 and a ray unit vertical drive motor 831. The ray unit assembly 800 is mounted on the swing frame upper crossbeam 630, and the swing frame upper crossbeam 630 is provided with a guide rail and a rack, wherein the rack is meshed with the ray unit horizontal drive gear 823. The ray unit horizontal drive motor 822 drives the ray unit horizontal drive gear 823 to rotate, so that the ray unit horizontal slider 821 can slide on the guide rail of the swing frame upper crossbeam 630.

[0090] The power end of the vertical driving motor 831 of the ray part is connected with the vertical rack 832 of the ray part through a gear, wherein the vertical rack 832 of the ray part is vertically arranged, and the gear teeth of the vertical rack 832 of the ray part and the power end of the vertical driving motor 831 of the ray part are meshed, and the lower end of the vertical rack 832 of the ray part is connected to the top surface of the ray generator 840. When the vertical driving motor 831 of the ray part rotates, the ray generator 840 is driven to move up and down.

[0091] In order to ensure the accurate vertical movement position of the ray generator 840, a ray part vertical guide sleeve and a ray part vertical guide rod 833 are provided at the corners of the ray part carrier 810, and a ray part vertical guide rod 833 used in conjunction with the ray part vertical guide sleeve is provided on the top surface of the ray generator 840, so that the ray generator 840 will not be offset during the extension and retraction process.

[0092] It can be seen that the ray grating assembly 850 is on the right side of the ray generator 840, and a cable 870 for providing power to the ray generator 840 is connected to the left side of the ray generator 840. A cable bracket 880 is set at the top of the ray part assembly 800, and the cable 870 is supported by the cable bracket 880 to prevent the cable 870 from affecting other components of the ray part assembly 800.

[0093] like Fig.11As shown, when the swing frame assembly 600 swings, the swing effect can refer to the A2 and A3 positions. In the process again, the receiving part assembly 700 can move in a small range according to the fixed frame assembly 500, but the ray receiving surface of the fixed frame assembly 500 always faces upward.

[0094] like Fig.12 As shown, the ray emitted by the ray generator 840 can also be offset in the Y direction. Fig.11 As shown, the radiation part assembly 800 and the receiving part assembly 700 form a group with each other, and there can be multiple groups of radiation part assemblies 800 and receiving part assemblies 700 in one gantry structure.

[0095] like Fig.13 As shown, a rotating shaft assembly is provided at the rear of the ray grating assembly 850, and a swing driven gear 863 is mounted on the outer annular surface of the rotating shaft assembly. The power end of the swing driving motor is connected to the swing driving gear 861, and the swing driving gear 861 is meshed with the swing driven gear 863. Driven by the swing driving motor, the swing driving gear 861 drives the swing driven gear 863 to rotate, thereby driving the ray grating assembly 850 to rotate.

[0096] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, many changes can be made in the specific implementation methods and application scopes based on the ideas of the present invention. As long as these changes do not deviate from the concept of the present invention, they all belong to the protection scope of the present invention.

Claims

1. A flaw detection mechanical structure, characterized in that: It includes a radiation part assembly for emitting flaw detection rays, a receiving part assembly for receiving the flaw detection rays emitted by the radiation part, a swing frame assembly for supporting the radiation part assembly, a swing drive mechanism for driving the swing frame assembly to swing, and a bracket assembly, wherein the swing frame assembly is hinged on the bracket assembly, the power end of the swing drive mechanism is connected to the side of the swing frame assembly, the swing drive mechanism can drive the swing frame assembly to swing, and drive the radiation part assembly to emit flaw detection rays laterally; the flaw detection mechanical structure also includes a fixed frame assembly, the receiving part assembly is installed on the fixed frame assembly, the fixed frame assembly is connected to the swing frame assembly, and the position of the fixed frame assembly is linked to follow the swing frame assembly when the swing frame assembly swings, and The ray receiving surface of the receiving part assembly is kept horizontal; the swing frame assembly and the fixed frame assembly enable angle compensation between the two axes through a gear mechanism, a toothed belt pulley mechanism, or a chain mechanism, so that the flat-panel detector on the fixed frame always remains parallel to the detection object; the bracket assembly includes a bracket column, on which a first gear is fixedly arranged; the swing frame assembly includes a swing frame column, on which a second gear and a third gear are arranged, wherein the third gear is fixed on the swing frame column, and the second gear is connected to the swing frame column through a bearing and swings coaxially with the fixed frame; the three gears form an epicyclic gear train, and the first gear and the second gear have the same number of teeth and module; The swing frame assembly is a gantry structure, which includes a swing frame upper beam with a slide rail, the radiation part assembly is mounted on the slide rail of the swing frame upper beam, the radiation part assembly is driven by a radiation part horizontal drive motor, and the radiation part horizontal drive motor can drive the radiation part assembly to move along the slide rail; the receiving part assembly is mounted on the fixed frame assembly, and the fixed frame assembly includes a fixed frame guide rail, the receiving part assembly is driven by a receiving part horizontal drive motor, and the receiving part horizontal drive motor can drive the receiving part assembly to move along the slide rail, and the fixed frame guide rail and The slide rails of the cross beams on the swing frame are parallel to each other; the ray part assembly and / or the receiving part assembly are equipped with a telescopic mechanism, which drives the ray emitting end of the ray part assembly and / or the ray receiving surface of the receiving part assembly to vertically displace; a limit assembly is provided on the side of the swing frame assembly, and the two limit ends of the limit assembly are used in conjunction with the bracket assembly, and the limit assembly is used to limit the extreme swing angle of the swing frame assembly; when the swing frame assembly is in the extreme swing position, the angle between the flaw detection ray emitted by the ray part assembly and the vertical plane is 30°.

2. The flaw detection mechanical structure according to claim 1, characterized in that: The power output end of the swing driving mechanism is connected to the middle section of the swing frame column.

3. The flaw detection mechanical structure according to claim 1, characterized in that: The connection between the fixed frame assembly and the swing frame assembly is located below the connection between the swing drive mechanism and the swing frame assembly.

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