High-energy industrial spiral CT system

Abstract

The invention relates to a high-energy industrial spiral CT (Computed Tomography) system, belongs to the technical field of CT scanning, and solves the problem that an oversized workpiece is difficult to scan. The CT system comprises a workpiece conveying mechanism and a scanning system. The workpiece conveying mechanism comprises a supporting platform, a first linear conveying assembly, a second linear conveying assembly and a driving device. The supporting platform is installed above the first linear conveying assembly in a sliding mode and can be driven by a driving device to move. The first linear conveying assembly and the second linear conveying assembly are arranged on the front side and the rear side of the scanning system respectively. The scanning system comprises a scanning assembly, a rotating slip ring assembly and a supporting assembly. The scanning assembly is rotatably installed on the supporting assembly through a rotary slip ring assembly, and when the scanning assembly rotates, the to-be-detected workpiece can be scanned. According to the invention, scanning of large-size workpieces is realized without rotation of the workpieces.

Description

Technical Field

[0001] The present invention relates to the field of CT technology, and in particular to a high-energy industrial spiral CT system. Background Art

[0002] The radiation source and detector of the high-energy CT detection system in the current market are generally moved vertically or horizontally, and are achieved in conjunction with the rotation of the workpiece being measured. This has high requirements on the scanning posture of the workpiece being measured. It is difficult to achieve the function of lateral rotation or vertical rotation for oversized workpieces, resulting in limited scanning of large-sized workpieces.

[0003] In addition, the existing scanning conditions of super-large workpieces (greater than 1.5m) have high power supply requirements for large-aperture high-energy CT scanning equipment, which is generally offline detection, and CT detection has certain limitations.

[0004] Therefore, the present invention provides a high-energy industrial spiral CT system to improve the flexibility of rapid scanning operations of oversized workpieces and realize online detection. Summary of the invention

[0005] In view of the above analysis, the present invention aims to provide a high-energy industrial spiral CT system to solve the problem that the existing high-energy CT system has limited scanning capability for oversized workpieces.

[0006] The purpose of the present invention is mainly achieved through the following technical solutions:

[0007] A high-energy industrial spiral CT system, comprising: a workpiece conveying mechanism and a scanning system;

[0008] The workpiece conveying mechanism comprises: a supporting platform, a first linear conveying assembly, a second linear conveying assembly and a driving device;

[0009] The support platform is used to support the workpiece to be measured; the support platform is slidably mounted above the first linear conveying assembly and can be driven to move by the driving device; the second linear conveying assembly is arranged in parallel with the first linear conveying assembly and is used to support the support platform; when the driving device drives the support platform to move to the position of the scanning system, the scanning system can scan the workpiece to be measured;

[0010] The scanning system comprises: a scanning assembly, a rotating slip ring assembly and a supporting assembly; the scanning assembly is rotatably mounted on the supporting assembly via the rotating slip ring assembly, and when the scanning assembly rotates, it can scan the workpiece to be measured.

[0011] Furthermore, the scanning assembly includes: a high-energy ray source and a detector; the high-energy ray source is used to emit X-rays, and the detector is used to detect transmitted rays to obtain measurement data.

[0012] Furthermore, the scanning assembly also includes: a linear accelerator, a modulator PU and a modulator TU.

[0013] Furthermore, the scanning assembly also includes: a rotating frame and a fan; a plurality of the fans are provided, and the plurality of fans are arranged linearly on the rotating frame.

[0014] Furthermore, the support assembly includes: a support frame, a second driving gear, a rotary motor and a rotating gear; the rotating gear is fixedly connected to the scanning assembly, and the rotating gear is rotatably connected to the support frame through the rotating slip ring assembly; the rotary motor can drive the second driving gear to rotate; the second driving gear is meshed with the rotating gear, and then the rotary motor can drive the scanning assembly to rotate.

[0015] Furthermore, the first linear conveying assembly and the second linear conveying assembly have the same structural composition; the first linear conveying assembly and the second linear conveying assembly both include: a support frame, a leveling ground hook and a support wheel assembly; the support wheel assembly is arranged in two rows in parallel above the support frame for rolling support of the support platform; the leveling ground hook is installed at the bottom of the support frame for adjusting the height of the support frame.

[0016] Furthermore, the driving device includes: a first driving motor, a screw, a screw nut and an articulated seat; the first driving motor and the articulated seat are both fixedly installed above the first linear conveying assembly; one end of the screw is fixedly connected to the output shaft of the first driving motor, and the other end is rotatably connected to the articulated seat; the screw nut and the screw form a screw nut pair; the screw nut is fixedly connected to the lower surface of the support platform; when the first driving motor drives the screw to rotate, the screw nut can drive the support platform to move linearly.

[0017] Furthermore, a slider platform and a slider guide rail are also provided on the first linear conveying assembly; the slider platform is slidably installed above the slider guide rail; and the support platform is fixedly installed above the slider platform.

[0018] Furthermore, the slider guide rails are provided with two mutually parallel ones.

[0019] Furthermore, a laser lamp is provided on the first linear conveying component, and a plurality of laser targets with scales are provided on the second linear conveying component; the laser lamp is used to emit a laser beam; and whether the scales on the laser target irradiated by the laser beam are consistent is used to determine whether the workpiece conveying mechanism is horizontal.

[0020] The technical solution of the present invention can achieve at least one of the following effects:

[0021] (1) The present invention provides a high-energy industrial spiral CT system for high-density workpiece defect detection. The present invention integrates a high-energy ray source into a vertical scanning system that can rotate 360° continuously. The high-energy CT system is equipped with a rotating slip ring, which solves the problem that high-density workpieces cannot be scanned online.

[0022] (2) The high-energy industrial spiral CT system of the present invention solves the problem that oversized workpieces cannot be scanned by setting a scanning assembly to rotate relative to a supporting assembly driven by a driving motor and a gear structure, so that the high-energy ray source and the detector can realize 360° continuous rotation. The workpiece is driven by a workpiece conveying mechanism to move back and forth, and spiral scanning is realized by the rotational movement of a scanning system with a large aperture. The aperture of the scanning system is 1700 mm, and the detection length can reach more than 2500 mm. The workpiece itself does not need to rotate, and online / offline detection can be realized.

[0023] (3) The high-energy industrial spiral CT system of the present invention drives the lead screw to rotate through the first drive motor, thereby realizing the displacement of the lead screw nut and the support platform, and drives the large-sized workpiece to be measured above it to be displaced through the support platform, thereby realizing the displacement drive of the workpiece to be measured. At the same time, the first linear conveying assembly and the second linear conveying assembly located on both sides of the scanning system support the support platform, thereby improving the bearing capacity of the support platform. For large-sized workpieces with heavy weight, stable support and displacement drive can be achieved, thereby realizing rapid scanning of large-sized workpieces, and the workpiece does not need to be rotated during the scanning process, thereby expanding the application scope of the scanning system.

[0024] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0026] Figure 1 This is a schematic diagram of the standby state of the high-energy industrial spiral CT system of Example 1 of the present invention;

[0027] Figure 2 This is a schematic diagram of a workpiece conveying state of a high-energy industrial spiral CT system according to Embodiment 1 of the present invention;

[0028] Figure 3This is a schematic diagram of a workpiece scanning state of a high-energy industrial spiral CT system according to Embodiment 1 of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of a high-energy industrial spiral CT system according to Embodiment 1 of the present invention;

[0030] Figure 5 This is a structural schematic diagram of a workpiece conveying mechanism of a high-energy industrial spiral CT system according to Embodiment 1 of the present invention;

[0031] Figure 6 A top view of a workpiece conveying mechanism of a high-energy industrial spiral CT system of Example 1 of the present invention;

[0032] Figure 7 This is a schematic diagram of the front structure of a scanning system of a high-energy industrial spiral CT system according to Embodiment 1 of the present invention;

[0033] Figure 8 This is a schematic diagram of the back structure of the scanning system of the high-energy industrial spiral CT system of Example 1 of the present invention;

[0034] Fig. 9 A schematic diagram of the structure of a rotary slip ring assembly of a scanning system of a high-energy industrial spiral CT system according to Embodiment 2 of the present invention;

[0035] Fig.10 It is a schematic diagram of the combined structure of the rotating gear and the rotating outer ring of the rotating slip ring assembly according to the second embodiment of the present invention;

[0036] Fig.11 It is a structural schematic diagram of the positioning inner ring of the rotating slip ring assembly according to embodiment 2 of the present invention;

[0037] Fig.12 It is a schematic diagram of the installation of the roller assembly of the rotating slip ring assembly of embodiment 2 of the present invention;

[0038] Fig.13 This is a schematic structural diagram of a support platform of a workpiece conveying mechanism of a high-energy industrial spiral CT system according to Embodiment 3 of the present invention;

[0039] Fig.14 A schematic diagram of an adjusting roller assembly of a support platform of a workpiece conveying mechanism of a high-energy industrial spiral CT system according to Example 3 of the present invention;

[0040] Fig.15 This is a schematic structural diagram of a rotating roller of an adjusting roller assembly of a supporting platform according to Embodiment 3 of the present invention;

[0041] Fig.16 A side view of a rotating roller of an adjusting roller assembly of a supporting platform according to Embodiment 3 of the present invention;

[0042] Fig.17This is a schematic diagram of the structure of the synchronous drive assembly of the support platform of Example 3 of the present invention.

[0043] Reference numerals:

[0044] 1-workpiece conveying mechanism; 2-scanning system; 3-workpiece to be measured; 4-loading platform; 5-unloading platform; 6-base;

[0045] 11-support platform; 12-first linear conveying assembly; 13-second linear conveying assembly; 14-driving device; 15-support frame; 16-leveling hook; 141-first driving motor; 142-screw rod; 143-hinged seat; 144-slider platform; 145-slider guide rail;

[0046] 1101-first adjusting roller assembly; 1102-second adjusting roller assembly; 1103-first mounting groove; 1104-second mounting groove; 1105-rotating shaft; 1106-rotating roller; 1107-synchronizing gear; 1108-first driving gear; 1109-driven gear; 1110-first bevel gear; 1111-second bevel gear; 1112-transmission rod; 1113-transmission rod support; 1114-transmission gear; 1115-first positioning shaft; 1116-second positioning shaft; 1106a-rotating roller; 1106b-semi-moon shaped protrusion;

[0047] 201-slewing frame; 202-cooler; 203-linear accelerator; 204-modulator PU; 205-modulator TU; 206-fan; 207-support frame; 208-rotating slip ring assembly; 209-second driving gear; 210-slewing motor; 211-rotating gear;

[0048] 2081-rotating outer ring; 2082-positioning inner ring; 2083-roller; 2084-conductive slip ring; 2085-positioning shaft; 2086-metal contact ring; 2087-positioning bearing; 2088-arc-shaped conductive ring. DETAILED DESCRIPTION

[0049] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0050] Example 1

[0051] A specific embodiment of the present invention discloses a high-energy industrial spiral CT system, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, it includes: a workpiece conveying mechanism 1 and a scanning system 2.

[0052] The workpiece conveying mechanism 1 includes: a support platform 11, a first linear conveying component 12, a second linear conveying component 13 and a driving device 14; the support platform 11 is used to support the workpiece to be measured; the support platform 11 is slidably installed above the first linear conveying component 12 and can be driven to move by the driving device 14; the first linear conveying component 12 and the second linear conveying component 13 are respectively arranged on the front and rear sides of the scanning system 2, and a gap is left between the two; when the driving device 14 drives the support platform 11 to move to the position of the scanning system 2, the support platform 11 is supported by the first linear conveying component 12 and the second linear conveying component 13; the scanning system 2 can scan the workpiece to be measured.

[0053] The scanning system 2 includes: a scanning assembly, a rotating slip ring assembly 208 and a supporting assembly; the scanning assembly is rotatably mounted on the supporting assembly via the rotating slip ring assembly 208, and when the scanning assembly rotates, it can scan the workpiece to be measured.

[0054] Furthermore, the scanning assembly includes: a high-energy ray source and a detector; the high-energy ray source is used to emit X-rays, and the detector is used to detect transmitted rays to obtain measurement data.

[0055] Furthermore, if Figure 7 As shown, the scanning assembly also includes: a linear accelerator 203, a modulator PU204 and a modulator TU205.

[0056] In the present invention, the linear accelerator uses an electromagnetic field to accelerate charged particles to a speed close to the speed of light, and generates X-rays after hitting the target. Compared with ordinary X-ray flaw detectors, the generated X-rays are not only high in energy, but also high in intensity. The electron linear accelerator of industrial CT has the characteristics of high energy, high dose rate, high stability and small size.

[0057] In the present invention, modulator PU204 and modulator TU205 are used to realize signal modulation and demodulation; modulator PU204 and modulator TU205 belong to the conventional configuration of the scanning assembly of the spiral CT device, and their structural principles and working effects are not described in detail in the present invention.

[0058] Furthermore, the scanning assembly further includes: a fan 206 ; a plurality of fans 206 are provided, and the plurality of fans 206 are arranged linearly on the rotating frame 201 .

[0059] Furthermore, if Figure 8As shown, the support assembly includes: a fixed frame 207, a second driving gear 209, a rotary motor 210 and a rotating gear 211; the rotating gear 211 is fixedly connected to the scanning assembly, and the rotating gear 211 is rotatably connected to the fixed frame 207 through the rotating slip ring assembly 208; the rotary motor 210 can drive the second driving gear 209 to rotate; the second driving gear 209 is meshed with the rotating gear 211, and then the rotary motor 210 can drive the scanning assembly to rotate.

[0060] Furthermore, the first linear conveying assembly 12 and the second linear conveying assembly 13 each include: a support frame 15, a leveling ground hook 16 and a support wheel assembly; the support wheel assembly is arranged in two rows in parallel above the support frame 15 for rolling support of the support platform 11; the leveling ground hook 16 is installed at the bottom of the support frame 15 for adjusting the height of the support frame 15.

[0061] Furthermore, if Figure 6 As shown, the driving device 14 includes: a first driving motor 141, a screw rod 142, a screw rod nut and an articulated seat 143; the first driving motor 141 and the articulated seat 143 are both fixedly installed above the first linear conveying assembly 12; one end of the screw rod 142 is fixedly connected to the output shaft of the first driving motor 141, and the other end is rotatably connected to the articulated seat 143; the screw rod nut and the screw rod 142 form a screw rod nut pair; the screw rod nut is fixedly connected to the lower surface of the support platform 11; when the first driving motor 141 drives the screw rod 142 to rotate, the screw rod nut can drive the support platform 11 to move linearly.

[0062] Furthermore, a slider guide rail 145 is fixedly mounted on the first linear conveying assembly 12 ; a slider platform 144 is slidably mounted above the slider guide rail 145 ; and the support platform 11 is fixedly mounted above the slider platform 144 .

[0063] Furthermore, the slider guide rails 145 are provided with two parallel ones.

[0064] Furthermore, the first linear conveying assembly 12 is also provided with a laser lamp, and the second linear conveying assembly 13 is provided with a plurality of laser targets with scales; the laser lamp is used to emit a laser beam; whether the scales on the laser target irradiated by the laser beam are consistent is used to determine whether the workpiece conveying mechanism is horizontal. The first linear conveying assembly 12 and the second linear conveying assembly 13 are horizontal and have the same height, and when the support platform 11 moves to extend out of the first linear conveying assembly 12, it can be supported by the second linear conveying assembly 13.

[0065] The design of the present invention integrates the high-energy X-ray emitter and detector on the rotating mechanism of the scanning system 2, which can realize 360° continuous rotation. In conjunction with the workpiece conveying mechanism 1 to drive the linear displacement of the workpiece 3 to be measured, the internal structure of the oversized high-density workpiece can be spirally scanned to generate high-quality structural images and extract useful information for the user. The innovation of this system is to realize efficient online detection of high-energy X-ray spiral CT, without the need to rotate the workpiece, and no additional detection damage will be caused to the workpiece. The quality of the workpiece is effectively guaranteed. It has huge economic and use benefits for producers and users.

[0066] Example 2

[0067] A specific embodiment of the present invention is improved on the basis of embodiment 1:

[0068] In this embodiment, taking into account that large-sized workpieces have different shapes, when scanning large-sized workpieces with irregular shapes, in order to ensure that the large-sized workpiece can smoothly pass through the middle hole of the scanning assembly, it is necessary to position the large-sized workpiece and adjust the alignment direction of the large-sized workpiece and the scanning assembly so that its length direction is consistent with the conveying direction so that it can be scanned smoothly.

[0069] In this embodiment, the support platform 11 of the workpiece conveying mechanism 1 is improved and designed so that the position of the large-sized workpiece can be adjusted while carrying and lifting the large-sized workpiece.

[0070] Specifically, Fig.13 As shown, in this embodiment, a first adjusting roller assembly 1101 and a second adjusting roller assembly 1102 are rotatably installed on the support platform 11; wherein, when the first adjusting roller assembly 1101 rotates, it can push the workpiece 3 to be measured to achieve azimuth rotation; when the second adjusting roller assembly 1102 rotates, it can push the workpiece 3 to be measured to move left and right along the width direction of the support platform 11; that is, in this embodiment, by adjusting the rotation of the workpiece 3 to be measured by the first adjusting roller assembly 1101, the shortest side of the workpiece 3 to be measured can be adjusted to align with the middle scanning hole of the scanning assembly, so as to achieve the passability of large-sized workpieces. By adjusting the left and right offset of the workpiece 3 to be measured by the second adjusting roller assembly 1102, the workpiece 3 to be measured is aligned with the middle scanning hole of the scanning assembly, so as to avoid the risk of the workpiece 3 to be measured being unable to be scanned by the scanning system or having side scratches due to the offset of the workpiece 3 to be measured.

[0071] Furthermore, if Fig.13 As shown, the first adjusting roller components 1101 are provided in multiple groups that are centrally symmetrical; preferably, the first adjusting roller components 1101 are provided in four groups, and the four groups of first adjusting roller components 1101 are arranged at intervals of 90° in the circumferential direction.

[0072] Furthermore, in this embodiment, one or more groups of second adjusting roller assemblies 1102 are arranged along the length direction of the support platform 11; the rotation axis of the second adjusting roller assembly 1102 is parallel to the conveying direction of the workpiece conveying mechanism 1; that is, the rotation axis of the second adjusting roller assembly 1102 is arranged perpendicular to the scanning system.

[0073] Specifically, when multiple groups of second adjusting roller assemblies 1102 are provided, the multiple groups of second adjusting roller assemblies 1102 are arranged linearly, such as Fig.13 shown.

[0074] Furthermore, a first mounting groove 1103 and a second mounting groove 1104 are provided on the supporting platform 11 ; the first adjusting roller assembly 1101 is rotatably mounted in the first mounting groove 1103 , and the second adjusting roller assembly 1102 is rotatably mounted in the second mounting groove 1104 .

[0075] In this embodiment, the first adjusting roller assembly 1101 and the second adjusting roller assembly 1102 both include: a rotating shaft 1105 and a rotating roller 1106; the rotating roller 1106 is fixedly mounted on the rotating shaft 1105 and can be driven to rotate by the rotating shaft 1105; the rotating roller 1106 is a cam structure, and when the rotating shaft 1105 drives the rotating roller 1106 to rotate, the protruding part of the rotating roller 1106 is rotated out of the upper surface of the support platform 11 or rotated into the first mounting groove 1103.

[0076] Preferably, a plurality of rotating rollers 1106 are fixedly mounted on a rotating shaft 1105; Fig.14 As shown, three rotating rollers 1106 are fixedly mounted on the rotating shaft 1105 . When the rotating shaft 1105 rotates, the three rotating rollers 1106 can be driven to rotate synchronously.

[0077] Specifically, in the present invention, the first adjustment roller assembly 1101 and the second adjustment roller assembly 1102 are driven independently, and the rotational movements of the first adjustment roller assembly 1101 and the second adjustment roller assembly 1102 are not performed simultaneously; that is, the adjustment roller assemblies independently perform azimuth angle adjustment and left-right displacement adjustment of the workpiece 3 to be measured.

[0078] During implementation, when the rotating roller 1106 of the first adjusting roller assembly 1101 rotates out of the upper surface of the supporting platform 11 and rolls in contact with the lower surface of the workpiece 3 to be measured, the workpiece 3 to be measured can be pushed to rotate around the symmetry center of multiple groups of first adjusting roller assemblies 1101, thereby achieving adjustment of the azimuth angle of the workpiece 3 to be measured; when the rotating roller 1106 of the second adjusting roller assembly 1102 rotates out of the upper surface of the supporting platform 11 and rolls in contact with the lower surface of the workpiece 3 to be measured, the workpiece 3 to be measured can be pushed to deviate left and right, thereby aligning it with the middle scanning hole of the scanning assembly.

[0079] In a specific embodiment of the present invention, Fig.15 , Fig.16 As shown, the rotating roller 1106 is composed of a rotating drum 1106a and a half-moon shaped projection 1106b.

[0080] Specifically, the rotating drum 1106a is a cylindrical drum.

[0081] Specifically, Fig.16 As shown, the two half-moon-shaped protrusions 1106b form a group and are symmetrically arranged on the upper and lower sides of the rotating drum 1106a.

[0082] Furthermore, if Fig.15 As shown, the half-moon-shaped protrusions 1106b are arranged in multiple groups in an array along the axial direction of the rotating drum 1106a.

[0083] In this embodiment, the half-moon-shaped protrusion 1106 b is made of rubber material to avoid surface damage to the workpiece 3 when the workpiece 3 is pushed to move.

[0084] Furthermore, when the half-moon-shaped protrusion 1106b is vertically upward, the half-moon-shaped protrusion 1106b of the rotating roller 1106 protrudes from the upper surface of the supporting platform 11 and can contact the workpiece to be measured on the supporting platform 11; when the half-moon-shaped protrusion 1106b is horizontal, the rotating roller 1106 is lower than the upper surface of the supporting platform 11 and does not contact the workpiece 3 to be measured on the supporting platform 11.

[0085] During implementation, when the rotating shaft 1105 drives the rotating roller 1106 to rotate, the half-moon-shaped protrusion 1106 b continuously applies lateral force to the workpiece 3 to be measured on the supporting platform 11 , thereby driving the workpiece 3 to be measured to rotate in a circumferential direction or to move in a translational manner.

[0086] In a specific embodiment of the present invention, two groups of second adjusting roller assemblies 1102 are provided, and the two groups of second adjusting roller assemblies 1102 are coaxially arranged; the two rotating shafts 1105 of the two groups of second adjusting roller assemblies 1102 are fixedly connected and can rotate synchronously under the drive of the first rotating motor.

[0087] In a specific embodiment of the present invention, Fig.14 As shown, the first adjustment roller assembly 1101 also includes: a synchronization gear 1107; the synchronization gear 1107 is fixedly mounted on the rotating shaft 1105; and the diameter of the synchronization gear 1107 is smaller than the diameter of the rotating cylinder 1106a of the rotating roller 1106, thereby keeping the synchronization gear 1107 lower than the upper surface of the supporting platform 11 to avoid contact between the synchronization gear 1107 and the workpiece 3 to be measured.

[0088] Furthermore, the plurality of first adjustment roller assemblies 1101 rotate synchronously driven by the second rotary motor and the rotary transmission assembly.

[0089] like Fig.17 As shown, the rotation transmission assembly includes: a first driving gear 1108 , a driven gear 1109 , a first bevel gear 1110 , a second bevel gear 1111 , a transmission rod 1112 and a transmission gear 1114 .

[0090] Specifically, the first driving gear 1108 is horizontally disposed below the supporting platform 11 , and the first driving gear 1108 is meshed with a plurality of driven gears 1109 at the same time, and can drive the plurality of driven gears 1109 to rotate synchronously.

[0091] Furthermore, the first bevel gear 1110 is fixedly connected to the driven gear 1109 via the second positioning shaft 1116, and the first bevel gear 1110 is arranged in parallel above the driven gear 1109; in this embodiment, the first bevel gear 1110 and the driven gear 1109 are coaxially installed to achieve synchronous rotation of the two.

[0092] Furthermore, the first bevel gear 1110 is meshed with the second bevel gear 1111 for transmission; in this embodiment, the direction of the rotating axis is converted from a vertical direction to a horizontal direction through the meshing transmission of the first bevel gear 1110 and the second bevel gear 1111, thereby realizing the rotation of the vertically arranged second bevel gear 1111.

[0093] Further, the transmission rod 1112 is arranged below the support platform 11 and is arranged parallel to the support platform 11; the second bevel gear 1111 is fixedly installed on one end of the transmission rod 1112, and the transmission gear 1114 is fixedly installed on the other end; the transmission gear 1114 is arranged below the support platform 11, and the transmission gear 1114 is meshed with the synchronization gear 1107. In this embodiment, the rotational power is transmitted to the synchronization gears 1107 of the four groups of first adjustment roller assemblies 1101 through four groups of transmission rods 1112 and transmission gears 1114, thereby realizing the synchronous rotation of the four groups of rotating shafts 1105 and rotating rollers 1106, and when the multiple rotating rollers 1106 rotate synchronously, they can simultaneously apply thrust to the support platform 11 to promote its rotational motion.

[0094] In this embodiment, during the rotation of the rotating roller 1106, when it rotates to a state where it protrudes from the upper surface of the support platform 11, the semi-lunar protrusion 1106b on its surface can exert an inclined upward force on the workpiece 3 to be measured above the support platform 11. The vertical component of the inclined force can achieve a slight lifting effect on the workpiece 3 to be measured, thereby reducing the mutual friction between the workpiece 3 to be measured and the surface of the support platform 11 when the workpiece 3 to be measured rotates; the horizontal component of the inclined force is used to promote the rotation of the workpiece 3 to be measured, thereby achieving circumferential position adjustment of the workpiece 3 to be measured.

[0095] During implementation, the first driving gear 1108 rotates under the drive of the second rotating motor, and can synchronously drive multiple driven gears 1109 to rotate. The first bevel gear 1110 rotates synchronously with the driven gear 1109 and can drive the second bevel gear 1111 to rotate. When the second bevel gear 1111 rotates, it can drive the transmission gear 1114 to rotate through the transmission rod 1112, and then drive the synchronization gear 1107 to rotate through the transmission gear 1114, thereby realizing the synchronous rotation of multiple groups of first adjustment roller assemblies 1101.

[0096] Furthermore, the number of the driven gears 1109 , the transmission rods 1112 and the transmission gears 1114 is equal to the number of the first adjusting roller assemblies 1101 .

[0097] Specifically, Fig.17 As shown, the first driving gear 1108 is fixedly connected to the first positioning shaft 1115 , and is rotatably mounted below the supporting platform 11 through the first positioning shaft 1115 ; the first positioning shaft 1115 is arranged perpendicular to the supporting platform 11 .

[0098] Specifically, Fig.17 As shown, a plurality of second positioning shafts 1116 are provided, and the plurality of second positioning shafts 1116 are provided around the first positioning shaft 1115 ; further, the second positioning shaft 1116 is rotatably installed below the supporting platform 11 via a bearing.

[0099] Specifically, Fig.17 As shown, at least one transmission rod support 1113 is provided on the transmission rod 1112, and the transmission rod support 1113 is fixedly connected to the lower surface of the support platform 11; the transmission rod 1112 is rotatably connected to the transmission rod support 1113 through a bearing, and then the transmission rod 1112 is rotatably hoisted below the support platform 11 through the transmission rod support 1113.

[0100] In this embodiment, by setting a rotating transmission assembly, multiple transmission gears 1114 are meshed with the synchronous gears 1107 of multiple groups of first adjustment roller assemblies 1101, so as to realize the synchronous rotation of multiple groups of first adjustment roller assemblies 1101; when multiple groups of first adjustment roller assemblies 1101 rotate synchronously, they can simultaneously provide lateral force to the workpiece 3 to be measured above the support platform 11, and the multiple groups of lateral thrusts provided by the multiple groups of first adjustment roller assemblies 1101 are continuous in the circumferential direction, thereby being able to push the workpiece 3 to be measured to rotate. In other words, the rotational torques provided by the multiple groups of first adjustment roller assemblies 1101 to the workpiece to be measured are in the same direction, and are all used to push the workpiece 3 to be measured to rotate clockwise or counterclockwise, so as to realize the superposition effect of multiple groups of rotational torques, and realize the circumferential angle adjustment of the workpiece 3 to be measured under the premise of minimizing the surface force of the workpiece 3 to be measured.

[0101] Example 3

[0102] A specific embodiment of the present invention is improved on the basis of embodiment 1 or embodiment 2:

[0103] In this embodiment, a rotary slip ring assembly 208 applied to the high-energy industrial spiral CT system of the present invention is provided. Fig. 9 As shown, the rotating slip ring assembly 208 of this embodiment includes: a rotating outer ring 2081, a positioning inner ring 2082 and a roller assembly; the rotating outer ring 2081 is rotatably mounted on the side of the positioning inner ring 2082 through multiple sets of roller assemblies.

[0104] Specifically, the rotating outer ring 2081 and the positioning inner ring 2082 are arranged in parallel and are coaxial. Fig. 9 shown.

[0105] Specifically, Fig. 9 , Fig.10 As shown, the rotating gear 211 is fixedly connected to the rotating outer ring 2081 or is an integral structure; the rotating gear 211 is coaxially arranged with the rotating outer ring 2081, and when the rotary motor 210 drives the rotating gear 211 to rotate through the second driving gear 209, the rotating outer ring 2081 rotates synchronously with the rotating gear 211.

[0106] Specifically, the side of the positioning inner ring 2082 is rotatably mounted with multiple sets of roller assemblies; the roller assemblies are in rolling contact with the inner side of the rotating outer ring 2081 to support the rotating outer ring 2081; Fig. 9 shown.

[0107] Furthermore, the positioning inner ring 2082 is fixedly connected to the fixed frame 207; the rotating outer ring 2081 is fixedly connected to the rotating frame 201; when the rotating gear 211 rotates driven by the rotating motor 210 and the second driving gear 209, the rotating outer ring 2081 rotates relative to the positioning inner ring 2082, and at the same time can drive the rotating frame 201 to rotate relative to the fixed frame 207, thereby realizing the relative rotation of the scanning assembly and the supporting assembly, and further realizing the spiral scanning of the CT system.

[0108] In this embodiment, Fig.11 As shown, the roller assembly includes: a roller 2083, a positioning shaft 2085 and a positioning bearing 2087; the roller 2083 is fixedly mounted on the end of the positioning shaft 2085, one end of the positioning shaft 2085 is fixedly connected to the roller 2083, and the other end is rotatably mounted on the positioning inner ring 2082 through the positioning bearing 2087.

[0109] Specifically, Fig.12 As shown, a plurality of cylindrical bearing mounting grooves are provided on the side of the positioning inner ring 2082; the outer ring of the positioning bearing 2087 is fixedly mounted in the bearing mounting groove by means of an interference fit; the positioning shaft 2085 is fixedly sleeved and installed in the inner ring of the positioning bearing 2087 by means of an interference fit, thereby realizing the rotatable installation of the positioning shaft 2085 on the positioning inner ring 2082, and thus the roller 2083 can rotate relative to the positioning inner ring 2082.

[0110] Furthermore, if Fig. 9 , Fig.11 As shown, multiple groups of roller assemblies are arranged on the side of the positioning inner ring 2082, and the multiple groups of roller assemblies are arranged in a ring shape.

[0111] Further, multiple groups of the roller assemblies are nested and installed inside the rotating outer ring 2081, and the rollers 2083 can roll along the inner surface of the rotating outer ring 2081. In this embodiment, through the nested combination of multiple groups of roller assemblies and the rotating outer ring 2081, the rotating outer ring 2081 and the positioning inner ring 2082 can be rotated and installed, so that the rotating slip ring assembly 208 has the function of a large-sized bearing, and can realize the relative rotation of the large-sized rotating frame 201 and the fixed frame 207, thereby realizing the rotational movement of the scanning assembly relative to the supporting assembly.

[0112] Specifically, Fig.11 , Fig.12 As shown, the roller 2083 is drum-shaped as a whole; a metal contact ring 2086 is provided on the outer surface of the roller 2083.

[0113] Specifically, Fig.11As shown, the metal contact ring 2086 is glued and installed on the surface of the roller 2083; or, the metal contact ring 2086 is embedded in the roller 2083, and the surface protrudes from the outer surface of the roller 2083.

[0114] Furthermore, an arc-shaped conductive ring 2088 with a concave surface is provided on the inner side of the rotating outer ring 2081; the metal contact ring 2086 on the roller 2083 is in compression contact with the surface of the arc-shaped conductive ring 2088; and the support assembly transfers electrical energy to the scanning assembly through the contact between the metal contact ring 2086 and the arc-shaped conductive ring 2088.

[0115] Specifically, a conductive slip ring 2084 is further disposed on the outside of the positioning shaft 2085; the rotor portion of the conductive slip ring 2084 is fixedly connected to the positioning shaft 2085; the stator portion of the conductive slip ring 2084 is fixedly connected to the positioning inner ring 2082 or the outer ring of the positioning bearing 2087. When the positioning shaft 2085 rotates relative to the positioning inner ring 2082, the conductive slip ring 2084 can realize rotational power supply.

[0116] Specifically, the rotor part of the conductive slip ring 2084 is electrically connected to the metal contact ring 2086 on the roller 2083 through a first cable; the stator part of the conductive slip ring 2084 is electrically connected to the power supply equipment of the support assembly through a second cable.

[0117] Furthermore, in order to realize the power supply capability of the conductive slip ring 2084, in this embodiment, a first cable slot for installing a first cable is opened on the surface of the positioning shaft 2085; at the same time, a second cable slot for allowing a second cable to pass through is opened on the positioning inner ring 2082 (not shown in the figure).

[0118] In this embodiment, a plurality of positioning shafts 2085 are used to provide support force for the rotating outer ring 2081, and the torque caused by the overall mass of the scanning assembly and the rotating gear 211 is borne by the plurality of positioning shafts 2085 and the positioning bearings 2087, thereby improving the overall bearing capacity of the rotating slip ring assembly 208.

[0119] Considering that the power supply capacity of a single conductive slip ring 2084 is limited; in this embodiment, according to the power demand of the scanning assembly, multiple conductive slip rings 2084 are selected to be installed on the positioning shafts 2085, and power is supplied through multiple conductive slip rings 2084, thereby solving the power consumption problem of the high-energy CT system; and in this embodiment, there is no need to use large-sized bearings or high-power conductive slip rings 2084 to achieve the rotational motion of the scanning assembly and the realization of the power supply demand, thereby reducing the demand for equipment components and significantly reducing the equipment cost.

[0120] Compared with the prior art, the technical solution provided by this embodiment has at least one of the following beneficial effects:

[0121] The high-energy industrial spiral CT system of the present invention integrates a high-energy X-ray emitter and a detector on a rotating mechanism, which can realize 360° continuous rotation, and can perform spiral scanning of the internal structure of ultra-large and high-density workpieces to generate high-quality structural images, thereby realizing internal flaw detection of ultra-large workpieces or extracting other information useful to users.

[0122] The high-energy industrial spiral CT system of the present invention realizes high-energy X-ray spiral CT efficient online detection, the workpiece does not need to be rotated, and no additional detection damage is caused to the workpiece, which effectively guarantees the quality of the workpiece and has huge economic and use benefits for manufacturers and users.

[0123] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A high-energy industrial spiral CT system, characterized in that: include: Workpiece conveying mechanism (1) and scanning system (2); The workpiece conveying mechanism (1) comprises: a supporting platform (11), a first linear conveying component (12), a second linear conveying component (13) and a driving device (14); The support platform (11) is used to support the workpiece to be measured; the support platform (11) is slidably mounted above the first linear conveying assembly (12) and can be driven to move by the driving device (14); the second linear conveying assembly (13) is arranged in parallel with the first linear conveying assembly (12) and is used to support the support platform (11); when the driving device (14) drives the support platform (11) to move to the position of the scanning system (2), the scanning system (2) can scan the workpiece to be measured; The scanning system (2) comprises: a scanning assembly, a rotating slip ring assembly (208) and a supporting assembly; the scanning assembly is rotatably mounted on the supporting assembly via the rotating slip ring assembly (208); when the scanning assembly rotates, it can scan the workpiece to be measured.

2. The high-energy industrial spiral CT system according to claim 1, characterized in that: The scanning assembly comprises: a high-energy ray source and a detector; the high-energy ray source is used to emit X-rays, and the detector is used to detect transmitted rays to obtain measurement data.

3. The high-energy industrial spiral CT system according to claim 2, characterized in that: The scanning assembly further comprises: a linear accelerator (203), a modulator PU (204) and a modulator TU (205).

4. The high-energy industrial spiral CT system according to claim 3, characterized in that: The scanning assembly further comprises: a rotating frame (201) and a fan (206); a plurality of the fans (206) are provided, and the plurality of fans (206) are arranged in a linear manner on the rotating frame (201).

5. The high-energy industrial spiral CT system according to claim 4, characterized in that: The support assembly comprises: a fixed frame (207), a second driving gear (209), a rotary motor (210) and a rotating gear (211); the rotating gear (211) is fixedly connected to the scanning assembly, and the rotating gear (211) is rotationally connected to the fixed frame (207) via the rotating slip ring assembly (208); the rotary motor (210) can drive the second driving gear (209) to rotate; the second driving gear (209) is meshed with the rotating gear (211), and thus the rotary motor (210) can drive the scanning assembly to rotate.

6. The high-energy industrial spiral CT system according to any one of claims 1 to 5, characterized in that: The first linear conveying component (12) and the second linear conveying component (13) have the same structural composition.

7. The high-energy industrial spiral CT system according to claim 6, characterized in that: The first linear conveying assembly (12) and the second linear conveying assembly (13) both comprise: a support frame (15), a leveling hook (16) and a support wheel assembly; the support wheel assembly is arranged in two rows above the support frame (15) and is used for rolling support of the support platform (11); the leveling hook (16) is installed at the bottom of the support frame (15) and is used for adjusting the height of the support frame (15).

8. The high-energy industrial spiral CT system according to claim 1, characterized in that: The first linear conveying component (12) is also provided with a slider platform (144) and a slider guide rail (145); the slider platform (144) is slidably mounted above the slider guide rail (145); and the support platform (11) is fixedly mounted above the slider platform (144).

9. The high-energy industrial spiral CT system according to claim 8, characterized in that: The slide block guide rails (145) are provided with two mutually parallel ones.

10. The high-energy industrial spiral CT system according to claim 1, characterized in that: The first linear conveying component (12) is also provided with a laser lamp, and the second linear conveying component (13) is provided with a plurality of laser targets with scales; the laser lamp is used to emit a laser beam; and whether the scales on the laser target irradiated by the laser beam are consistent is used to determine whether the workpiece conveying mechanism is horizontal.

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