An industrial CT scanning rotary device and a rotary method thereof

Abstract

The present application relates to a kind of industrial CT scanning rotary device and its rotary method, belong to CT scanning technical field, solve the problem that the rotary motion of existing large aperture scanning equipment is difficult to realize and equipment is easily damaged.The industrial CT scanning rotary device of the present application, comprising: scanning assembly, rotating slip ring assembly and support assembly;Scanning assembly is rotatably installed on support assembly by rotating slip ring assembly, scanning assembly can be scanned when rotating to the workpiece to be measured;Support assembly includes: fixed support frame, driving gear, rotary motor and rotating gear;Rotating gear is fixedly connected with the scanning assembly, rotating gear is rotatably connected with fixed support frame by rotating slip ring assembly;Rotary motor can drive driving gear to rotate;Driving gear is engaged with rotating gear, and then rotary motor can drive scanning assembly to rotate.The present application realizes the rotary drive of the scanning equipment of super large aperture simultaneously facilitates the production and application of product.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of CT scanning, in particular to an industrial CT scanning rotary device and a rotary method thereof. BACKGROUND

[0002] The ray source and the detector of the high-energy CT detection system in the current market are generally vertically moved or horizontally moved, and the measured workpiece is rotated or translated, so that the CT detection has certain limitations for the measured workpiece with high scanning posture requirements, that is, the workpiece cannot be rotated or vertically placed.

[0003] For CT detection of an oversized workpiece (greater than 1.5 meters), the scanning equipment is required to have an oversized aperture; for the rotary motion of the scanning equipment, a large-size slip ring and a large-size bearing specially customized are generally required to realize the rotary motion, and the equipment has poor applicability; the production and application of the equipment are limited, and it is inconvenient to maintain and replace parts.

[0004] Based on the above reasons, the present application provides an industrial CT scanning rotary device. SUMMARY

[0005] In view of the above analysis, the present application aims to provide an industrial CT scanning rotary device to solve the problem that the existing CT scanning equipment is difficult to realize spiral scanning of a large-size workpiece.

[0006] The purpose of the present application is mainly realized through the following technical solutions:

[0007] An industrial CT scanning rotary device, comprising: a scanning assembly, a rotary slip ring assembly, and a support assembly;

[0008] The scanning assembly is rotatably installed on the support assembly through the rotary slip ring assembly, and the scanning assembly can scan the workpiece to be measured when rotating;

[0009] The support assembly comprises a fixed support frame, a driving gear, a rotary motor, and a rotating gear; the rotating gear is fixedly connected with the scanning assembly, and the rotating gear is rotatably connected with the fixed support frame through the rotary slip ring assembly;

[0010] The rotary motor can drive the driving gear to rotate; the driving gear is engaged with the rotating gear, and thus the rotary motor can drive the scanning assembly to rotate.

[0011] Further, the scanning assembly comprises a rotary frame, a high-energy ray source, and a detector; the rotary frame is fixedly connected with the rotating gear; the high-energy ray source and the detector are integrated on the rotary frame; the high-energy ray source is used for emitting X-rays, and the detector is used for detecting the penetrating rays to obtain measurement data.

[0012] Further, the scanning assembly further comprises: a linear accelerator, a modulator PU and a modulator TU.

[0013] Further, the scanning assembly further comprises: a fan; the fan is provided with a plurality of fans, and the plurality of fans are arranged in a line on the rotary frame.

[0014] Further, the rotary slip ring assembly comprises: a rotary outer ring, a positioning inner ring and a roller assembly; the rotary outer ring is rotatably installed on the side surface of the positioning inner ring through a plurality of roller assemblies.

[0015] Further, the rotary outer ring and the positioning inner ring are arranged side by side and coaxial.

[0016] Further, the rotary gear is fixedly connected with the rotary outer ring or is an integral structure; the positioning inner ring is fixedly connected with the fixed support frame.

[0017] Further, a plurality of roller assemblies are rotatably installed on the side surface of the positioning inner ring; the roller assemblies are in rolling contact with the inner side of the rotary outer ring and can be used to support the rotary outer ring.

[0018] A rotary method of a CT scanning rotary device, adopting the industrial CT scanning rotary device, the rotary method comprises the following steps:

[0019] Step S1: start the rotary motor and drive the driving gear to rotate through the rotary motor;

[0020] Step S2: the rotary gear is engaged with the driving gear and rotates relative to the rotary frame;

[0021] Step S3: when the rotary gear rotates relative to the rotary frame, the scanning assembly is driven to rotate relative to the rotary assembly through the rotary gear; at the same time, the rotary slip ring assembly supplies power to the electrical equipment of the scanning assembly.

[0022] An industrial spiral CT system, comprising: a workpiece conveying mechanism for driving the workpiece to displace and the industrial CT scanning rotary device.

[0023] Compared with the prior art, the technical scheme provided by the present application has at least one of the following beneficial effects:

[0024] 1. The CT scanning rotary device of the present application integrates the high-energy X-ray emitter and the detector on the scanning assembly, drives the rotary frame to rotate through the rotary motor, the driving gear and the rotary gear, can realize 360° continuous rotation of the scanning assembly, and can realize internal structure spiral scanning of super-large size high-density workpieces by cooperating with the linear conveying mechanism to convey the workpieces, generate high-quality structure images, and further realize internal flaw detection of super-large size workpieces or extract other information useful to the user.

[0025] 2. The CT scanning rotary device of the present application can realize high-energy X-ray spiral CT efficient online detection through its own rotary motion, and the workpiece does not need to rotate, which will not cause additional detection damage to the workpiece; effectively guarantee the quality of the workpiece. It has great economic and use benefits for producers and users.

[0026] 3. The CT scanning rotary device of the present application supports and limits the rotary outer ring through the positioning rotating shaft and the roller installed on the positioning inner ring, disperses the mass of the rotary outer ring and the scanning assembly to multiple positioning rotating shafts and rollers for bearing, which is beneficial to prolong the service life of the equipment.

[0027] In the present application, the above technical solutions can be combined with each other to realize more preferred combination schemes. Other features and advantages of the present application will be described in the subsequent specification, and some advantages will become apparent from the specification, or will be understood by implementing the present application. The purpose and other advantages of the present application can be achieved and obtained from the contents specifically pointed out in the specification and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings are included to provide a further understanding of the embodiments and no limitation on the present application. The same reference numerals refer to the same components throughout the drawings.

[0029] Figure 1 It is a front structure schematic diagram of the industrial CT scanning rotary device of embodiment 1 of the present application;

[0030] Figure 2 It is a back structure schematic diagram of the industrial CT scanning rotary device of embodiment 1 of the present application;

[0031] Figure 3 It is a structure composition schematic diagram of the rotary slip ring assembly of the industrial CT scanning rotary device of embodiment 1 of the present application;

[0032] Figure 4 It is a combination structure schematic diagram of the rotary gear and the rotary outer ring of the rotary slip ring assembly of embodiment 1 of the present application;

[0033] Figure 5 It is a structure schematic diagram of the positioning inner ring of the rotary slip ring assembly of embodiment 1 of the present application;

[0034] Figure 6 It is an installation schematic diagram of the roller assembly of the rotary slip ring assembly of embodiment 1 of the present application;

[0035] Figure 7 It is a structure schematic diagram of the workpiece conveying mechanism of the industrial spiral CT system of embodiment 3 of the present application;

[0036] Figure 8 Fig. 3 is a top view of a workpiece conveying mechanism of an industrial helical CT system according to an embodiment of the present application;

[0037] Figure 9 Fig. 4 is a schematic view of a structure of a carrier platform of the workpiece conveying mechanism of the industrial helical CT system according to the embodiment of the present application;

[0038] Figure 10 Fig. 5 is a schematic view of an adjusting roller assembly of the carrier platform of the workpiece conveying mechanism of the industrial helical CT system according to the embodiment of the present application;

[0039] Figure 11 Fig. 6 is a schematic view of a rotating roller of the adjusting roller assembly of the carrier platform according to the embodiment of the present application;

[0040] Figure 12 Fig. 7 is a side view of the rotating roller of the adjusting roller assembly of the carrier platform according to the embodiment of the present application.

[0041] Reference numerals:

[0042] 11 - carrier platform; 12 - first conveying frame assembly; 13 - second conveying frame assembly; 14 - driving device; 15 - conveying frame; 16 - leveling hook; 141 - first driving motor; 142 - screw rod; 143 - hinged seat; 144 - sliding block; 145 - sliding block guide rail;

[0043] 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 - synchronous gear; 1106a - rotating drum; 1106b - half-moon-shaped protrusion;

[0044] 201 - rotating frame; 202 - cooler; 203 - linear accelerator; 204 - modulator PU; 205 - modulator TU; 206 - fan; 207 - fixed support frame; 208 - rotating slip ring assembly; 209 - driving gear; 210 - rotating motor; 211 - rotating gear;

[0045] 2081 - rotating outer ring; 2082 - positioning inner ring; 2083 - roller; 2084 - conductive slip ring; 2085 - positioning rotating shaft; 2086 - metal contact ring; 2087 - positioning bearing; 2088 - arc-shaped conductive ring. DETAILED DESCRIPTION

[0046] The preferred embodiments of the present application will be described in detail below with reference to the drawings, in which the figures constitute a part of the present application and illustrate the principles of the present application together with the embodiments of the present application, but are not intended to limit the scope of the present application.

[0047] Embodiment 1

[0048] One specific embodiment of the present application discloses an industrial CT scanning rotary device, which comprises a scanning assembly, a rotating slip ring assembly 208 and a support assembly, wherein the scanning assembly is rotatably installed on the support assembly through the rotating slip ring assembly 208, and the scanning assembly can scan the workpiece to be measured when rotating. Figure 1 、 Figure 2 、 Figure 3 As shown in the figure, the scanning assembly further comprises a linear accelerator 203, a modulator PU 204 and a modulator TU 205.

[0049] Further, as shown in the figure, the scanning assembly further comprises a fan 206, wherein the fan 206 is arranged in a linear shape on the rotary frame 201.

[0050] Further, as shown in the figure, the scanning assembly further comprises a fan 206, wherein the fan 206 is arranged in a linear shape on the rotary frame 201. Figure 1

[0051] In the present application, the linear accelerator is used to accelerate charged particles by electromagnetic field, so that the speed of the charged particles approaches the speed of light, and X-rays are generated after hitting the target. Compared with ordinary X-ray flaw detectors, the generated X-rays have high energy and high intensity. The electronic linear accelerator of the industrial CT has the characteristics of high energy, large dose rate, high stability and small volume.

[0052] In the present application, the modulator PU 204 and the modulator TU 205 are used to realize the modulation and demodulation of signals, and the modulator PU 204 and the modulator TU 205 belong to the conventional configuration of the scanning assembly of the spiral CT device, and the structure principle and working effect thereof are not described herein.

[0053] Further, as shown in the figure, the scanning assembly further comprises a fan 206, wherein the fan 206 is arranged in a linear shape on the rotary frame 201. Figure 1

[0054] Further, as shown in the figure, the support assembly comprises a fixed support frame 207, a driving gear 209, a rotary motor 210 and a rotating gear 211, wherein the rotating gear 211 is fixedly connected with the scanning assembly, the rotating gear 211 is rotatably connected with the fixed support frame 207 through the rotating slip ring assembly 208, the rotary motor 210 can drive the driving gear 209 to rotate, the driving gear 209 is engaged with the rotating gear 211, and then the rotary motor 210 can drive the scanning assembly to rotate. Figure 2

[0055] As shown in the figure, the rotary motor 210 is arranged on the fixed support frame 207, and the rotary motor 210 is connected with the rotating gear 211 through the rotating slip ring assembly 208. Figure 3 、 Figure 4 、 Figure 5 ​​​As shown, in this embodiment, the rotating slip ring assembly 208 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 by multiple sets of roller assemblies.

[0056] Specifically, the outer rotating ring 2081 and the inner positioning ring 2082 are arranged side by side and are coaxial, as shown below. Figure 3 As shown.

[0057] Specifically, such as Figure 3 , Figure 4 As shown, the rotating gear 211 is fixedly connected to the rotating outer ring 2081 or is an integral structure; the rotating gear 211 and the rotating outer ring 2081 are coaxially arranged, and when the rotary motor 210 drives the rotating gear 211 to rotate through the drive gear 209, the rotating outer ring 2081 rotates synchronously with the rotating gear 211.

[0058] Specifically, multiple sets of roller assemblies are rotatably mounted on the side of the positioning inner ring 2082; the roller assemblies make rolling contact with the inner side of the rotating outer ring 2081 to support the rotating outer ring 2081; as... Figure 3 As shown.

[0059] Furthermore, the positioning inner ring 2082 is fixedly connected to the fixed support frame 207; the rotating outer ring 2081 is fixedly connected to the rotating frame 201; when the rotating gear 211 rotates under the drive of the rotating motor 210 and the drive 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 support frame 207, thereby realizing the relative rotation of the scanning assembly and the support assembly, and thus enabling the spiral scanning of the CT system.

[0060] In this embodiment, as Figure 5 , Figure 6 As shown, the roller assembly includes: roller 2083, positioning shaft 2085 and positioning bearing 2087; the roller 2083 is fixedly installed at 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 installed on the positioning inner ring 2082 through the positioning bearing 2087.

[0061] Specifically, such as Figure 6As shown in the figure, the side of the positioning inner ring 2082 is provided with a plurality of cylindrical bearing mounting grooves; the outer ring of the positioning bearing 2087 is fixedly installed in the bearing mounting groove in an interference fit manner; the positioning rotating shaft 2085 is fixedly installed in the inner ring of the positioning bearing 2087 in an interference fit manner, realizing the rotating installation of the positioning rotating shaft 2085 on the positioning inner ring 2082, and further realizing the rotation of the roller 2083 relative to the positioning inner ring 2082.

[0062] Further, as shown in the figure, Figure 5 The roller assembly is provided on the side of the positioning inner ring 2082, and a plurality of groups of roller assemblies are arranged in a ring shape.

[0063] Further, a plurality of groups of the roller assembly are nested and installed inside the rotating outer ring 2081, and the roller 2083 can roll along the inner surface of the rotating outer ring 2081. In this embodiment, through the nested combination of the plurality of groups of roller assemblies and the rotating outer ring 2081, the rotating installation of the rotating outer ring 2081 and the positioning inner ring 2082 is realized, so that the rotating slip ring assembly 208 has the function of a large-size bearing, and the relative rotation of the large-size rotating frame 201 and the fixed support frame 207 is realized, and further the rotating motion of the scanning assembly relative to the support assembly is realized.

[0064] Specifically, as shown in the figure, Figure 5 , Figure 6 The roller 2083 is in the shape of a drum as a whole; and the outer surface of the roller 2083 is provided with a metal contact ring 2086.

[0065] Specifically, as shown in the figure, Figure 6 The metal contact ring 2086 is pasted and installed on the surface of the roller 2083; or the metal contact ring 2086 is embedded inside the roller 2083, and the surface protrudes from the outer surface of the roller 2083.

[0066] Further, the inner side of the rotating outer ring 2081 is provided with an arc-shaped conductive ring 2088 with an inner concave surface; the metal contact ring 2086 on the roller 2083 is in extrusion contact with the surface of the arc-shaped conductive ring 2088; and the support assembly transmits electric energy to the scanning assembly through the contact of the metal contact ring 2086 and the arc-shaped conductive ring 2088.

[0067] Specifically, the outer part of the positioning rotating shaft 2085 is further provided with a conductive slip ring 2084; the rotor part of the conductive slip ring 2084 is fixedly connected with the positioning rotating shaft 2085; and the stator part of the conductive slip ring 2084 is fixedly connected with the inner ring of the positioning inner ring 2082 or the positioning bearing 2087. When the positioning rotating shaft 2085 rotates relative to the positioning inner ring 2082, the conductive slip ring 2084 can realize rotating power supply.

[0068] Specifically, the rotor part of the conductive slip ring 2084 is electrically connected with the metal contact ring 2086 on the roller 2083 through the first cable; and the stator part of the conductive slip ring 2084 is electrically connected with the power supply device of the support assembly through the second cable.

[0069] Further, in order to realize the power supply capability of the conductive slip ring 2084, in the embodiment, a first cable clamping groove for mounting the first cable is arranged on the surface of the positioning shaft 2085; and a second cable clamping groove (not shown in the figure) for allowing the second cable to pass through is arranged on the positioning inner ring 2082.

[0070] In the embodiment, the support force for the rotating outer ring 2081 is provided by the plurality of positioning shafts 2085, 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 bearing 2087, thereby improving the overall bearing capacity of the rotating slip ring assembly 208.

[0071] Considering that the power supply capability of a single conductive slip ring 2084 is limited, in the embodiment, according to the power demand of the scanning assembly, the conductive slip ring 2084 is mounted on each of the plurality of positioning shafts 2085, and power supply is realized through the plurality of conductive slip rings 2084 (all or part), thereby solving the power consumption problem of the high-energy CT system.

[0072] The CT scanning rotary device of the application realizes power supply to the scanning assembly through the plurality of conductive slip rings 2084 mounted on the positioning shafts 2085, the plurality of conductive slip rings 2084 can be used alternately, or when an individual conductive slip ring 2084 fails, another conductive slip ring 2084 can be replaced for power supply, thereby ensuring the continuity of power supply to the scanning assembly and realizing timely and efficient detection of the large-size workpiece to be detected.

[0073] The application integrates the high-energy X-ray emitter and the detector on the rotatable rotary frame 201, can realize 360° continuous rotation, can perform internal structure spiral scanning on the super-large-size high-density workpiece, and generate high-quality structure images to extract useful information for the user. The CT scanning rotary device of the application realizes high-energy X-ray horizontal super-large-size workpiece spiral CT detection, and the workpiece does not need to rotate, thereby avoiding additional damage caused by workpiece movement.

[0074] The CT scanning rotary device of the application is used for large-size high-density workpiece defect detection, solves the problem that the super-large-size workpiece cannot be scanned in the original attitude due to the problem that the vertical detection device cannot continuously rotate.

[0075] The motion driving structure of the CT scanning rotary device is a metal motion pair such as a gear, which solves the problem of short service life of the equipment caused by radiation aging of the material of the non-metallic transmission structure under high-energy rays.

[0076] Embodiment 2

[0077] In one specific embodiment of the present application, a rotary method of the rotary device in Embodiment 1 is provided, comprising the following steps:

[0078] Step S1: start the rotary motor 210 and drive the driving gear 209 to rotate through the rotary motor 210;

[0079] Step S2: the rotating gear 211 is engaged with the driving gear 209 and rotates relative to the rotary frame 201;

[0080] Step S3: when the rotating gear 211 rotates relative to the rotary frame 201, the scanning assembly is driven to rotate relative to the rotary assembly through the rotating gear 211; at the same time, the power supply equipment of the scanning assembly is powered through the rotating slip ring assembly 208.

[0081] In the step S3, the rotating gear 211 drives the scanning assembly to rotate relative to the rotary assembly in the following manner:

[0082] Step S301: the rotating gear 211 drives the rotating outer ring 2081 fixedly connected thereto to realize rotary motion;

[0083] Step S302: when the rotating outer ring 2081 rotates, it rotates around the plurality of roller assemblies rotatably installed on the positioning inner ring 2082, and the inner wall surface of the rotating outer ring 2081 rubs against the rollers 2083 of the roller assemblies to drive the rollers 2083 to rotate;

[0084] Step S303: when the rollers 2083 rotate, the positioning shaft 2084 rotatably installed on the positioning inner ring 2082 rotates, the positioning shaft 2084 realizes rotation relative to the positioning inner ring 2082 through the positioning bearing 2087, the positioning inner ring 2082 is fixedly connected with the rotary frame 201, and the rotating gear 211 and the scanning assembly realize rotary motion relative to the rotary assembly.

[0085] It is worth noting that: in the step S302, the friction between the rotating outer ring 2081 and the rollers 2083 is rolling friction. Specifically, the inner wall surface of the rotating outer ring 2081 is provided with an arc-shaped conductive ring 2088 with an inner concave surface; the outer surface of the roller 2083 is provided with a metal contact ring 2086, and the metal contact ring 2086 is in rolling contact with the arc-shaped conductive ring 2088.

[0086] The power supply mode of the rotating slip ring assembly 208 to the scanning assembly in the step S3 is as follows:

[0087] Step S311: The conductive slip ring 2084 is installed on the positioning rotating shaft 2085; the rotor part of the conductive slip ring 2084 is fixedly connected with the positioning rotating shaft 2085; the stator part of the conductive slip ring 2084 is fixedly connected with the inner ring 2082 or the outer ring of the positioning bearing 2087; when the positioning rotating shaft 2085 rotates relative to the inner ring 2082, the rotor part of the conductive slip ring 2084 rotates relative to the stator part.

[0088] Step S312: The rotor part of the conductive slip ring 2084 is electrically connected with 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 with the power supply device of the support assembly through a second cable; when the rotor part and the stator part of the conductive slip ring 2084 rotate relative to each other, the power supply device can transmit electric energy to the metal contact ring 2086 on the roller 2083 through the conductive slip ring 2084.

[0089] Step S313: When the roller 2083 rolls relative to the rotating outer ring 2081, the metal contact ring 2086 rolls in contact with the arc-shaped conductive ring 2088 on the inner wall of the rotating outer ring 2081, so that the metal contact ring 2086 can transmit electric energy to the arc-shaped conductive ring 2088, and supply electric energy to the power-consuming device of the scanning assembly moving synchronously with the rotating gear 2011 and the rotating outer ring 2081 through the arc-shaped conductive ring 2088.

[0090] Compared with the prior art, the technical scheme provided by the embodiment has at least one of the following beneficial effects:

[0091] 1. In the embodiment, the rotation movement of the scanning assembly and the power supply requirement can be realized without using a large-size bearing or a large-power conductive slip ring 2084, thereby reducing the requirement for device components and significantly reducing the cost of the device.

[0092] 2. In the embodiment, the main gear 209 is driven to rotate by the rotary motor 210, and the scanning assembly of the rotary device is driven to rotate through the meshing transmission of the main gear 209 and the rotating gear 211, thereby realizing the rotary driving of the CT scanning device, and the movement is stable and reliable.

[0093] Embodiment 3

[0094] In one specific embodiment of the application, a CT scanning system based on the rotary device of embodiment 1 is provided.

[0095] As Figure 7、 Figure 8 As shown in the figure, the CT scanning system further comprises: a workpiece conveying mechanism; the workpiece conveying mechanism comprises: a carrying platform 11, a first conveying frame assembly 12, a second conveying frame assembly 13 and a driving device 14; the carrying platform 11 is used for supporting a workpiece to be measured; the carrying platform 11 is slidingly installed above the first conveying frame assembly 12 and can be driven to displace by the driving device 14; the first conveying frame assembly 12 and the second conveying frame assembly 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 carrying platform 11 to displace to the position of the scanning system 2, the scanning system 2 can scan the workpiece to be measured.

[0096] Further, the first conveying frame assembly 12 and the second conveying frame assembly 13 have the same structure and composition; the first conveying frame assembly 12 and the second conveying frame assembly 13 both comprise: a conveying frame 15, a fixed ground hook 16 and a support wheel assembly; the support wheel assembly is arranged in parallel with two rows above the conveying frame 15 and is used for rollingly supporting the carrying platform 11; the fixed ground hook 16 is installed at the bottom of the conveying frame 15 and is used for adjusting the height of the conveying frame 15.

[0097] Further, as shown in the figure, Figure 8 The driving device 14 comprises: a first driving motor 141, a lead screw 142, a lead screw nut and a hinged seat 143; the first driving motor 141 and the hinged seat 143 are both fixedly installed above the first conveying frame assembly 12; one end of the lead screw 142 is fixedly connected with the output shaft of the first driving motor 141, and the other end is rotationally connected with the hinged seat 143; the lead screw nut and the lead screw 142 form a lead screw nut pair; the lead screw nut is fixedly connected with the lower surface of the carrying platform 11; when the first driving motor 141 drives the lead screw 142 to rotate, the lead screw nut can drive the carrying platform 11 to linearly displace.

[0098] Further, the first conveying frame assembly 12 is further fixedly provided with a sliding block guide rail 145; a sliding block 144 is slidingly installed above the sliding block guide rail 145; the carrying platform 11 is fixedly installed above the sliding block 144.

[0099] Further, the sliding block guide rail 145 is provided with two parallel sliding block guide rails.

[0100] Further, the first conveying frame assembly 12 is further provided with a laser lamp, and the second conveying frame assembly 13 is provided with a plurality of laser targets with scales; the laser lamp is used for emitting a laser beam; whether the scales on the laser targets are consistent when the laser beam irradiates on the laser targets is used for judging whether the workpiece conveying mechanism is horizontal.

[0101] The application designs that the high-energy X-ray emitter and detector are integrated on the rotating mechanism of the scanning system 2, which can realize 360° continuous rotation, and cooperates with the linear displacement of the workpiece conveying mechanism 1 to drive the to-be-detected workpiece 3, so that the internal structure of the oversized high-density workpiece can be spirally scanned, a high-quality structure image is generated, and useful information for the user is extracted. The innovation of the system is to realize high-efficiency online detection of high-energy X-ray spiral CT, the workpiece does not need to rotate, and the workpiece will not be damaged by additional detection. The quality of the workpiece is effectively guaranteed. It has great economic and use benefits for producers and users.

[0102] In the embodiment, considering that the shapes of large-size workpieces are different, when the large-size workpiece with irregular shape is scanned, in order to ensure that the large-size workpiece can smoothly pass through the middle hole of the scanning assembly, the position of the large-size workpiece needs to be adjusted, the alignment direction of the large-size workpiece and the scanning assembly is adjusted to be consistent with the length direction and the conveying direction, so that the large-size workpiece can be smoothly scanned.

[0103] In the embodiment, the bearing platform 11 of the workpiece conveying mechanism 1 is improved and designed, so that the bearing platform 11 can realize the orientation adjustment of the large-size workpiece under the premise of bearing and lifting the large-size workpiece.

[0104] Specifically, as shown in Figure 9 In the embodiment, the first adjusting roller assembly 1101 and the second adjusting roller assembly 1102 are rotatably installed on the bearing platform 11; when the first adjusting roller assembly 1101 rotates, the to-be-detected workpiece 3 can be pushed to rotate; when the second adjusting roller assembly 1102 rotates, the to-be-detected workpiece 3 can be pushed to displace left and right along the width direction of the bearing platform 11; that is, in the embodiment, the to-be-detected workpiece 3 is adjusted to rotate by the first adjusting roller assembly 1101, so that the shortest side of the to-be-detected workpiece 3 can be aligned with the middle scanning hole of the scanning assembly, and the passability of the large-size workpiece is realized. The to-be-detected workpiece 3 is adjusted to displace left and right by the second adjusting roller assembly 1102, so that the to-be-detected workpiece 3 can be aligned with the middle scanning hole of the scanning assembly, and the risk of being unable to pass through the scanning system or being side-scratched due to the displacement of the to-be-detected workpiece 3 is avoided.

[0105] Further, as shown in Figure 9 The first adjusting roller assembly 1101 is provided with a plurality of groups of central symmetry; preferably, the first adjusting roller assembly 1101 is provided with four groups, and the four groups of first adjusting roller assemblies 1101 are arranged at intervals of 90° in the circumferential direction.

[0106] Furthermore, in this embodiment, one or more sets of the second adjusting roller assembly 1102 are arranged along the length direction of the bearing 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 set perpendicular to the scanning system.

[0107] Specifically, when multiple sets of the second adjusting roller assembly 1102 are provided, the multiple sets of the second adjusting roller assembly 1102 are arranged linearly, such as... Figure 9 As shown.

[0108] Furthermore, the support platform 11 is provided with a first mounting groove 1103 and a second mounting groove 1104; 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.

[0109] In this embodiment, as Figure 10 As shown, both the first adjusting roller assembly 1101 and the second adjusting roller assembly 1102 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 has a cam structure, and when the rotating shaft 1105 drives the rotating roller 1106 to rotate, the protrusion of the rotating roller 1106 rotates out of the upper surface of the bearing platform 11 or rotates into the first mounting groove 1103.

[0110] Preferably, multiple rotating rollers 1106 are fixedly mounted on a rotating shaft 1105; for example... Figure 10 As shown, three rotating rollers 1106 are fixedly installed on the rotating shaft 1105. When the rotating shaft 1105 rotates, it can drive the three rotating rollers 1106 to rotate synchronously.

[0111] Specifically, in this invention, the first adjusting roller assembly 1101 and the second adjusting roller assembly 1102 are driven independently, and the rotational movements of the first adjusting roller assembly 1101 and the second adjusting roller assembly 1102 are not performed simultaneously; that is, the adjusting roller assembly adjusts the orientation angle and the left and right displacement of the workpiece 3 to be measured independently.

[0112] In implementation, in the process that the rotating roller 1106 of the first adjusting roller assembly 1101 rotates out of the upper surface of the bearing platform 11 and rolls in contact with the lower surface of the workpiece 3 to be tested, the workpiece 3 to be tested can be pushed to rotate around the center of symmetry of the multiple groups of first adjusting roller assemblies 1101, so as to realize the adjustment of the azimuth angle of the workpiece 3 to be tested; in the process that the rotating roller 1106 of the second adjusting roller assembly 1102 rotates out of the upper surface of the bearing platform 11 and rolls in contact with the lower surface of the workpiece 3 to be tested, the workpiece 3 to be tested can be pushed to shift left and right, so as to align the middle scanning hole of the scanning assembly.

[0113] In one specific embodiment of the present application, as shown in Figure 11 、 Figure 12 , the rotating roller 1106 is composed of a rotating drum 1106a and a half-moon-shaped protrusion 1106b.

[0114] Specifically, the rotating drum 1106a is a cylindrical drum.

[0115] Specifically, as shown in Figure 11 , the two half-moon-shaped protrusions 1106b are arranged in a group and symmetrically arranged on the upper and lower sides of the rotating drum 1106a.

[0116] Further, as shown in Figure 12 , multiple groups of the half-moon-shaped protrusions 1106b are arranged along the axis direction of the rotating drum 1106a.

[0117] In the present embodiment, the half-moon-shaped protrusion 1106b is made of rubber material to avoid surface damage to the workpiece 3 to be tested when pushing the workpiece 3 to be tested to move.

[0118] Further, 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 bearing platform 11 and can contact the workpiece on the bearing platform 11; when the half-moon-shaped protrusion 1106b is horizontal, the rotating roller 1106 is lower than the upper surface of the bearing platform 11 and does not contact the workpiece 3 to be tested on the bearing platform 11.

[0119] In implementation, in the process that the rotating shaft 1105 drives the rotating roller 1106 to rotate, the half-moon-shaped protrusion 1106b continuously applies a lateral force to the workpiece 3 to be tested on the bearing platform 11, so as to push the workpiece 3 to be tested to rotate circumferentially or translate.

[0120] In one specific embodiment of the present application, two groups of the second adjusting roller assembly 1102 are arranged coaxially; the two rotating shafts 1105 of the two groups of the second adjusting roller assembly 1102 are fixedly connected and can synchronously rotate under the drive of the first rotating motor.

[0121] In one embodiment of the present application, as shown in Figure 10 The first adjusting roller assembly 1101 further comprises a synchronous gear 1107, which is fixedly installed on the rotating shaft 1105 and has a diameter smaller than that of the rotating roller 1106, so as to keep the synchronous gear 1107 below the upper surface of the bearing platform 11 and avoid contact between the synchronous gear 1107 and the workpiece 3 to be measured.

[0122] Further, the plurality of first adjusting roller assemblies 1101 are synchronously rotated under the driving of the second rotating motor and the rotating transmission assembly. Specifically, when the number of the second rotating motor is equal to that of the first adjusting roller assemblies 1101, the synchronous gear 1107 is not required, and the first adjusting roller assemblies 1101 can be directly rotated by the second rotating motor; when the number of the second rotating motor is less than that of the first adjusting roller assemblies, the synchronous gear 1107 and the rotating transmission assembly are required, and the plurality of first adjusting roller assemblies 1101 are synchronously rotated by the synchronous gear 1107 and the rotating transmission assembly.

[0123] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered by the protection scope of the present application.

Claims

1. An industrial CT scanning turntable, characterized in that, The application relates to a scanning assembly, a rotating slip ring assembly (208) and a support assembly; the scanning assembly is rotatably installed on the support assembly through the rotating slip ring assembly (208), the scanning assembly can be used for scanning a workpiece to be measured when rotating, the support assembly comprises a fixed support frame (207), a driving gear (209), a rotary motor (210) and a rotating gear (211), the rotating gear (211) is fixedly connected with the scanning assembly, the rotating gear (211) is rotatably connected with the fixed support frame (207) through the rotating slip ring assembly (208), the rotary motor (210) can drive the driving gear (209) to rotate, the driving gear (209) is engaged with the rotating gear (211), and then the rotary motor (210) can drive the scanning assembly to rotate. The rotating slip ring assembly (208) comprises a rotating outer ring (2081), a positioning inner ring (2082) and a roller assembly; the rotating outer ring (2081) is rotatably installed on the side surface of the positioning inner ring (2082) through a plurality of roller assemblies; a plurality of roller assemblies are rotatably installed on the side surface of the positioning inner ring (2082); the roller assembly is in rolling contact with the inner side of the rotating outer ring (2081) and can be used for supporting the rotating outer ring (2081); the roller assembly comprises a roller (2083), a positioning rotating shaft (2085) and a positioning bearing (2087); the roller (2083) is fixedly installed at the end of the positioning rotating shaft (2085), one end of the positioning rotating shaft (2085) is fixedly connected with the roller (2083), and the other end is rotatably installed on the positioning inner ring (2082) through the positioning bearing (2087); the roller (2083) can roll along the inner surface of the rotating outer ring (2081); the roller (2083) is drum-shaped as a whole. The outer surface of the roller (2083) is provided with a metal contact ring (2086); the inner side of the rotating outer ring (2081) is provided with an arc-shaped conductive ring (2088) with a concave surface; the rotor part of the conductive slip ring (2084) is electrically connected with the metal contact ring (2086) through a first cable, and the stator part is electrically connected with a power supply device of the support assembly through a second cable; the conductive slip ring (2084) is installed on the plurality of positioning rotating shafts (2085) to supply power to the scanning assembly, and the plurality of conductive slip rings (2084) can be used alternately. The rotating outer ring (2081) and the positioning inner ring (2082) are arranged side by side and coaxially.

2. The industrial CT scanning turntable of claim 1, wherein, The rotating gear (211) is fixedly connected with the rotating outer ring (2081) or is an integral structure; the positioning inner ring (2082) is fixedly connected with the fixed support frame (207).

3. The industrial CT scanning gantry of claim 2, wherein, ​ 4. The industrial CT scanning turntable of claim 1, wherein, The scanning assembly comprises a rotary frame (201), a high-energy ray source and a detector; the rotary frame (201) is fixedly connected with the rotating gear (211); the high-energy ray source and the detector are integrated on the rotary frame (201); the high-energy ray source is used for emitting X-rays, and the detector is used for detecting the X-rays to obtain measurement data.

5. The industrial CT scanning turn about apparatus of claim 1, wherein, The scanning assembly further comprises a linear accelerator (203), a modulator PU (204) and a modulator TU (205).

6. The industrial CT scanning turn about apparatus of claim 1, wherein, The scanning assembly further comprises fans (206); a plurality of fans (206) are arranged in a line on the rotary frame (201).

7. A method of rotation of a CT scanning gantry, characterized by, The rotary method comprises the following steps: Step S1: starting the rotary motor (210) and rotating the driving gear (209) through the rotary motor (210); Step S2: the rotating gear (211) is engaged with the driving gear (209) and rotates relative to the rotary frame (201); Step S3: when the rotating gear (211) rotates relative to the rotary frame (201), the scanning assembly is driven to rotate relative to the rotary assembly through the rotating gear (211); at the same time, the power supply equipment of the scanning assembly is powered through the rotating slip ring assembly (208).

8. An industrial spiral CT system, characterized by comprising: Comprise: A workpiece conveying mechanism for driving the displacement of a workpiece and the industrial CT scanning rotary device according to any one of claims 1-6.

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