Multi-scale rock core image acquisition device and image acquisition method

Abstract

The invention discloses a multi-scale rock core image acquisition device and an image acquisition method. The device comprises a base, a camera mounted on the base and a sample table arranged on the base, the sample table comprises at least two rotating rollers which are arranged in parallel, a rock core sample can be placed between every two adjacent rotating rollers, and the rotating rollers can rotate to drive the rock core sample to turn over; the camera is positioned above the rotating roller, and a lens faces downwards; and the distance separation mechanism is connected with the multiple rotating rollers and used for driving every two adjacent rotating rollers to be close to or away from each other so as to adjust the distance between the two rotating rollers. The two adjacent rotating rollers rotate in the same direction to drive a rock core sample placed between the two rotating rollers to turn over, the rock core sample can be continuously scanned, the distance separating mechanism is additionally arranged to drive the two adjacent rotating rollers to be close to or away from each other, and the distance between the two rotating rollers can be adjusted so that rock core samples of different sizes can be placed.

Description

Technical Field

[0001] This invention relates to the field of geological core image acquisition technology, and particularly to a multi-scale core image acquisition device and image acquisition method. Background Technology

[0002] A core scanner can scan core samples placed on a sample stage to extract and analyze the physicochemical information contained on the surface and inside of the core. Existing sample stages have a simple structure with multiple sampling slots for placing core samples. The sample stage containing the core sample is placed directly under the scanning head of the core scanner, and the scanning head can then scan the core sample on the stage. However, because the core sample needs to be scanned from 360°, the core sample in the sample box needs to be manually rotated for a second scan. Finally, the results of the two scans need to be stitched together on a computer.

[0003] To address the aforementioned issues, Chinese Patent (Authorization Announcement No.: CN204255867U) discloses a core image acquisition instrument capable of multi-line scanning, comprising a base, an XYZ three-axis working platform, and a camera. The XYZ three-axis working platform is mounted on the base, and the camera is fixed to the Z-axis moving component of the XYZ three-axis working platform via a connector, with the camera lens facing vertically downwards. A sample stage is provided on the bottom housing of the base. A motor drives a rubber roller to rotate, causing the core to rotate 360°, enabling continuous scanning.

[0004] However, the rubber rollers in the aforementioned patent are fixedly mounted on the base by bearings, and the spacing between two adjacent rubber rollers is fixed. Therefore, only core samples of fixed size can be placed. Summary of the Invention

[0005] This invention provides a multi-scale core image acquisition device and method, which can place core samples of multiple scales while achieving continuous scanning.

[0006] On one hand, the present invention provides a multi-scale core image acquisition device, which includes a base, a camera mounted on the base, and a sample stage disposed on the base; the sample stage includes at least two parallel rotating rollers, with a core sample placed between adjacent rotating rollers, and the rotating rollers can rotate to flip the core sample; the camera is located above the rotating rollers with its lens facing downwards; and further includes:

[0007] The spacing mechanism, connected to a plurality of the rotating rollers, is used to drive two adjacent rotating rollers to move closer or further apart to adjust the spacing between the two rotating rollers.

[0008] Optionally, the plurality of the rotating rollers are all arranged to extend laterally, and the sample stage further includes a mounting frame and two sets of first slide rail assemblies mounted on the mounting frame;

[0009] Two sets of first slide rail assemblies are respectively disposed at opposite ends of the rotating roller along the axial direction and are installed and connected to the rotating roller. The rotating roller can be slidably mounted on the mounting frame along the longitudinal direction through the two sets of first slide rail assemblies.

[0010] Furthermore, each group of the first slide rail assembly includes:

[0011] The first slide rail extends longitudinally and is mounted on the mounting bracket;

[0012] The first slider is slidably set on the first slide rail. There are multiple first sliders, and the opposite ends of the multiple rotating rollers are installed and connected to the multiple first sliders one by one.

[0013] The spacing mechanism is installed and connected to each of the first sliders in one of the first slide rail assemblies. The spacing mechanism can drive the first sliders to slide along the first slide rail to drive the rotating roller to move longitudinally.

[0014] Optionally, the plurality of rotating rollers are all arranged to extend laterally, and the spacing mechanism includes:

[0015] Multiple spacing blocks are configured, and the multiple spacing blocks are arranged at intervals along the longitudinal direction and are connected to multiple rotating rollers one by one.

[0016] A drive linkage component is connected to multiple of the spacing blocks. The drive linkage component is adapted to drive multiple rotating rollers to move longitudinally together by driving the multiple spacing blocks to move longitudinally together.

[0017] Furthermore, the drive linkage component includes:

[0018] The guide component is fixedly connected to the spacing block;

[0019] A linkage plate is provided with a guide groove that cooperates with the guide member. The guide groove is obliquely arranged. The linkage plate is adapted to move to drive the guide member to move along the guide groove, so as to drive multiple spacing blocks to move together longitudinally.

[0020] A power component, connected to the linkage plate, is adapted to drive the linkage plate to move laterally.

[0021] Furthermore, the spacing mechanism also includes:

[0022] Mounting plate;

[0023] A second slide rail assembly is mounted on the mounting plate, and the spacing block is movable on the mounting plate in the longitudinal direction via the second slide rail assembly.

[0024] Furthermore, the second slide rail assembly includes:

[0025] The second slide rail extends longitudinally and is mounted on the mounting plate;

[0026] The second slider is slidably set on the second slide rail. There are multiple second sliders, and each of the multiple second sliders is installed in a one-to-one correspondence with a multiple spacing block.

[0027] Optionally, the power assembly includes:

[0028] A ball screw, extending laterally and connected to the linkage plate, is used to convert rotational motion into linear motion to drive the linkage plate to move laterally.

[0029] The first motor is connected to the ball screw and is used to drive the ball screw to rotate.

[0030] Optionally, the sample stage further includes:

[0031] The dustproof plate, located below the rotating roller, is suitable for catching dust or ash that falls from the core sample.

[0032] Optionally, the multi-scale core image acquisition device also includes:

[0033] Digital rollers are used to label core samples.

[0034] Optionally, the sample stage further includes:

[0035] The second motor is configured as multiple motors, each connected to one of the multiple rotating rollers, and is used to drive the rotating rollers to rotate.

[0036] The control panel is electrically connected to the second motor and is used to control the start and stop of the second motor in order to control the rotation angle of the rotating roller.

[0037] Optionally, the multi-scale core image acquisition device also includes:

[0038] An XYZ axis moving mechanism is mounted on the base, and the camera is mounted on the XYZ axis moving mechanism. The XYZ axis moving mechanism is used to drive the camera to move forward, backward, left, right, and up and down.

[0039] On the other hand, the present invention also provides a method for acquiring multi-scale core images, the method comprising the following steps:

[0040] The core sample is placed on two adjacent rotating rollers, and the two adjacent rotating rollers are driven to move closer or further apart according to the size of the core sample to be acquired, so as to adjust the distance between the two rotating rollers to accommodate core samples of various sizes.

[0041] Images of core samples were acquired using a camera;

[0042] The rotating roller is driven to rotate and flip the core sample at a preset angle. The camera is then used to capture images of the flipped core sample again.

[0043] Compared with the prior art, the advantages of the present invention are as follows:

[0044] 1. In this invention, the core sample can be placed between two adjacent rotating rollers. The core sample is in contact with the rotating rollers and can rotate under the drive of the rotating rollers. The camera is directed towards the core sample between the two rotating rollers to acquire images of it. After acquiring the front image of the core sample, the two adjacent rotating rollers rotate in the same direction to drive the core sample placed between the two rotating rollers to flip. The camera can perform 360° continuous scanning of the core sample without manually flipping the core sample, which improves the efficiency and accuracy of image acquisition.

[0045] By adding a spacing mechanism to drive two adjacent rotating rollers closer together or further apart, the distance between the two rotating rollers can be adjusted to accommodate core samples of different sizes. Specifically, when the core sample to be imaged is large, the spacing mechanism can be used to drive the two rotating rollers further apart, increasing the distance between them, thus allowing a larger core sample to be placed between them. Conversely, when the core sample to be imaged is small, the spacing mechanism can be used to drive the two rotating rollers closer together, decreasing the distance between them, thus allowing a smaller core sample to be placed between them.

[0046] 2. In this invention, by installing first slide rail assemblies at opposite ends of the axial direction of the rotating roller, the first slide rail assemblies are used to guide the movement of the rotating roller in the longitudinal direction, so that the rotating roller can move longitudinally relative to the mounting frame, thereby facilitating the splitting mechanism to drive adjacent two rotating rollers to move closer or further apart in the longitudinal direction.

[0047] 3. The working principle of the spacing mechanism in this invention for adjusting the distance between the rotating rollers is as follows:

[0048] Driven by the first motor, the ball screw converts rotational motion into linear motion, driving the linkage plate to move laterally along the third slide rail. During the movement of the linkage plate, it drives the guide members to move along the guide groove. Since the guide groove is obliquely set on the linkage plate, the guide members can move both laterally and longitudinally relative to the linkage plate, causing multiple guide members to move closer or further apart along the guide groove to achieve aggregation or separation. Furthermore, since the guide members are fixedly mounted on the spacing block, which is mounted on the longitudinally sliding first and second sliders, the guide members can drive the rotating rollers mounted on the first slider to achieve aggregation or separation, thereby adjusting the spacing between the rotating rollers to accommodate core samples of different sizes.

[0049] 4. In this invention, multiple guide grooves are radially distributed, and the extension direction of the guide grooves has a preset angle with the X-axis. When the multiple guide members slide under the guidance of the guide grooves, the longitudinal distance between two adjacent guide members is always equal, so that the distance between two adjacent rotating rollers is equal.

[0050] 5. The function of the dust cover in this invention is to catch the dust or ash that falls from the core sample, making it easy to clean and preventing the dust or ash from falling from the core sample from entering the housing cavity of the mounting frame.

[0051] The cover also serves a dustproof function, which not only protects against dust but also makes the overall structure more aesthetically pleasing and simple.

[0052] The cover and dustproof plate are both installed and connected to the mounting frame to form a closed box structure, with the rotating roller located outside the box structure.

[0053] 6. In this invention, a digital roller is installed between two adjacent rotating rollers for marking core samples. The digital roller is operated to rotate, displaying numbers indicating the sampling depth of the core sample. This facilitates the input of corresponding information during scanning and avoids data corruption.

[0054] By moving the digital roller, core samples at different locations can be labeled.

[0055] 7. The multi-scale core image acquisition device of the present invention also includes an XYZ axis moving mechanism, which is mounted on a base and the camera is mounted on the XYZ axis moving mechanism. The XYZ axis moving mechanism is used to drive the camera to move back and forth, left and right, and up and down.

[0056] The base, XYZ axis moving mechanism, and camera are assembled together to form a scanner. Attached Figure Description

[0057] The invention will now be described in more detail with reference to embodiments and the accompanying drawings.

[0058] Figure 1 This is an axonometric view used in multi-scale core image acquisition devices;

[0059] Figure 2 This is the front view of a multi-scale core image acquisition device;

[0060] Figure 3 It is an isometric view of the sample stage;

[0061] Figure 4 This is a top view of the sample stage;

[0062] Figure 5 yes Figure 3 A schematic diagram of the installation of the intermediate sample stage with the separation mechanism after the dust cover and cover are removed;

[0063] Figure 6 yes Figure 5 A schematic diagram showing the installation of the sample stage and the separation mechanism for a single rotating roller;

[0064] Figure 7 yes Figure 6 After the separation mechanism is removed, the sample stage displays a structural schematic diagram of a single rotating roller;

[0065] Figure 8 This is a schematic diagram of the installation structure of the spacing mechanism, the first slide rail assembly, and the mounting bracket;

[0066] Figure 9 yes Figure 8 Top view of the installation structure;

[0067] Figure 10 This is a schematic diagram of the installation structure of the spacing mechanism, the rotating roller, and the first slide rail assembly;

[0068] Figure 11 This is a schematic diagram of the spacing mechanism;

[0069] Figure 12 This is a structural diagram of a dustproof plate equipped with digital rollers;

[0070] Figure 13 It is a schematic diagram of the symmetrical plane of the rotating roller and the projection of the guide groove onto the same XY plane.

[0071] Figure label:

[0072] 1. Scanner;

[0073] 11. Base; 12. Camera; 13. XYZ axis moving mechanism;

[0074] 2. Sample stage;

[0075] 21. Rotating roller; 22. Mounting bracket; 23. First slide rail assembly; 231. First slide rail; 232. First slider; 24. Mounting base; 241. Adapter block; 25. Second motor; 26. Control panel; 27. Reducer; 28. Dustproof plate; 29. ​​Cover; 291. Clearance groove;

[0076] 3. Splitting mechanism;

[0077] 31. Spread block; 32. Drive linkage assembly; 321. Guide component; 322. Linkage plate; 3221. Guide groove; 323. Power assembly; 3231. Ball screw; 3232. First motor; 33. Mounting plate; 34. Second slide rail assembly; 341. Second slide rail; 342. Second slider; 35. Third slide rail assembly; 351. Third slide rail; 352. Third slider;

[0078] 4. Digital scroll wheel; 5. Magnetic strip. Detailed Implementation

[0079] The invention will now be further described with reference to the accompanying drawings.

[0080] like Figures 1 to 13 As shown, it should be noted that Figure 1 The direction along the X-axis is horizontal or left-right, the direction along the Y-axis is vertical or front-back, and the direction along the Z-axis is up-down or vertical.

[0081] Example 1

[0082] like Figures 1 to 11 As shown, this embodiment of the invention provides a multi-scale core image acquisition device, including a base 11, a camera 12 mounted on the base 11, a sample stage 2 disposed on the base 11, and a separation mechanism 3.

[0083] The sample stage 2 includes at least two parallel and spaced rotating rollers 21, with a space between adjacent rotating rollers 21 for placing core samples. The rotating rollers 21 rotate to flip the core samples. The camera 12 is located above the rotating rollers 21 with its lens facing downwards.

[0084] The spacing mechanism 3 is connected to multiple rotating rollers 21 and is used to drive two adjacent rotating rollers 21 to move closer or further apart to adjust the spacing between the two rotating rollers 21.

[0085] In this embodiment of the invention, the core sample can be placed between two adjacent rotating rollers 21. The core sample is in contact with the rotating rollers 21 and can rotate under the drive of the rotating rollers 21. The camera 12 is directed towards the core sample between the two rotating rollers 21 to acquire images of it. After acquiring the front image of the core sample, the two adjacent rotating rollers 21 rotate in the same direction to drive the core sample placed between the two rotating rollers 21 to flip. The camera 12 can perform 360° continuous scanning of the core sample without manually flipping the core sample, which improves the efficiency and accuracy of image acquisition.

[0086] By adding a spacing mechanism 3 to drive two adjacent rotating rollers 21 closer together or further apart, the distance between the two rotating rollers 21 can be adjusted to accommodate core samples of different sizes. Specifically, when the core sample to be imaged is large, the spacing mechanism 3 can be used to drive the two rotating rollers 21 further apart to increase the distance between them, allowing a larger core sample to be placed between them. Conversely, when the core sample to be imaged is small, the spacing mechanism 3 can be used to drive the two rotating rollers 21 closer together to decrease the distance between them, allowing a smaller core sample to be placed between them.

[0087] Example 2

[0088] The multi-scale core image acquisition device in this embodiment is basically the same as that in Embodiment 1. The difference is that the sample stage 2 in this embodiment also includes a mounting frame 22 and a first slide rail assembly 23 mounted on the mounting frame 22.

[0089] like Figures 3 to 7 As shown, specifically, the mounting frame 22 has a box-like structure and a receiving cavity, in which the spacing mechanism 3 and the first slide rail assembly 23 are both disposed. The mounting frame 22 includes a base plate and peripheral side plates, and the receiving cavity is defined by the base plate and peripheral side plates.

[0090] The rotating rollers 21 extend laterally, and there are multiple rotating rollers 21 arranged in parallel at intervals to form a row of rotating rollers 21. The first slide rail assemblies 23 are configured in two sets, which are respectively located on opposite ends of the rotating rollers 21 along the axial direction. The two sets of first slide rail assemblies 23 are installed and connected to the opposite ends of the rotating rollers 21 one by one. The rotating rollers 21 can be slidably mounted on the mounting frame 22 in the longitudinal direction through the two sets of first slide rail assemblies 23.

[0091] In this embodiment, by installing first slide rail assemblies 23 at opposite ends of the axial direction of the rotating roller 21, the first slide rail assemblies 23 are used to guide the movement of the rotating roller 21 in the longitudinal direction, so that the rotating roller 21 can move longitudinally relative to the mounting frame 22, thereby facilitating the splitting mechanism 3 to drive two adjacent rotating rollers 21 to move closer or further apart in the longitudinal direction.

[0092] Optionally, each set of first slide rail assemblies 23 includes a first slide rail 231 and a plurality of first sliders 232.

[0093] The first slide rail 231 extends longitudinally and is mounted on the base plate of the mounting bracket 22; a plurality of first sliders 232 are slidably mounted on the first slide rail 231, and the plurality of first sliders 232 are installed and connected one-to-one with the opposite ends of the plurality of rotating rollers 21.

[0094] At least one set of first slide rail assemblies 23 has a first slider 232 connected to a spacing mechanism 3. The spacing mechanism 3 is used to drive the first slider 232 to slide along the first slide rail 231, so as to drive the rotating roller 21 connected to the first slider 232 to move longitudinally, thereby adjusting the distance between the two rotating rollers 21.

[0095] Mounting seats 24 are rotatably mounted on both ends of the rotating roller 21. The mounting seats 24 are fixedly mounted on the first slider 232. The first slider 232 is slidably mounted on the first slide rail 231. Since the first slide rail 231 is perpendicular to the extension direction of the rotating roller 21, the rotating roller 21 can rotate along the central axis of the rotating roller 21 on the first slider 232, or move longitudinally along the first slide rail 231 under the drive of the first slider 232.

[0096] Optionally, the mounting base 24 is a bearing assembly, which includes a rotating bearing and a bearing housing. The inner ring of the rotating bearing is fitted onto the rotating roller 21, and the outer ring of the rotating bearing is fixed on the bearing housing. The bearing housing is fixedly mounted on the first slider 232, and the rotating shaft is rotatably mounted on the first slider 232 through the bearing assembly.

[0097] The sample stage 2 also includes a second motor 25 for driving the rotating roller 21 to rotate. The second motor 25 is connected to the rotating roller 21. The second motor 25 drives the rotating roller 21 to rotate, thereby causing the core sample placed between the two rotating rollers 21 to rotate.

[0098] The second motor 25 is fixedly mounted on the mounting base 24 via an adapter block 241.

[0099] A speed reducer 27 is provided between the second motor 25 and the rotating roller 21. The speed reducer 27 is used to reduce the speed of the second motor 25. The speed reducer 27 includes a driving wheel, a driven wheel, and a transmission belt connecting the driving wheel and the driven wheel. The driving wheel is connected to the output shaft of the second motor 25, and the driven wheel is coaxially fixed to the rotating shaft. The diameter of the driving wheel is smaller than that of the driven wheel.

[0100] The mounting frame 22 of the sample stage 2 is also equipped with a control panel 26 that is electrically connected to the second motor 25. When the control panel 26 is operated, it controls the start and stop of the second motor 25, so as to control the rotating roller 21 to rotate at a preset angle under the drive of the second motor 25, thereby causing the core sample to rotate through the required angle.

[0101] Example 3

[0102] The multi-scale core image acquisition device in this embodiment is basically the same as that in Embodiment 1 and Embodiment 2. The difference is that the spacing mechanism 3 in this embodiment is located on the opposite side of the multiple rotating rollers 21 along the axial direction. The spacing mechanism 3 includes multiple spacing blocks 31 and a drive linkage component 32 connected to the multiple spacing blocks 31.

[0103] like Figures 8 to 11 As shown, specifically, multiple spacing blocks 31 are arranged longitudinally at intervals and are connected one-to-one with multiple rotating rollers 21. One end of each rotating roller 21 is fixed to a first slider 232 by a mounting base 24. The spacing blocks 31 are fixedly mounted on the first slider 232, and the first slider 232 is slidably mounted on the first slide rail 231. The drive linkage assembly 32 can drive the multiple spacing blocks 31 to move together longitudinally, thereby driving the multiple rotating rollers 21 to move together longitudinally along the first slide rail 231.

[0104] The drive linkage component 32 in this embodiment includes a linkage plate 322, a power component 323, and multiple guide members 321.

[0105] Specifically, the linkage plate 322 is provided with a guide groove 3221 that cooperates with the guide member 321. One end of the guide member 321 is fixed to the spacing block 31, and the other end passes through the guide groove 3221, which is obliquely arranged. The power assembly 323 is connected to the linkage plate 322 and is used to drive the linkage plate 322 to move laterally. During the lateral movement, the linkage plate 322 can drive the guide member 321 to move along the groove wall of the guide groove 3221, thereby driving multiple spacing blocks 31 to move longitudinally together.

[0106] The guide component 321 is a pin that extends vertically and is perpendicular to the plane of the linkage plate 322.

[0107] Multiple guide grooves 3221 are provided, and each guide groove 3221 corresponds to a guide member 321.

[0108] The separating mechanism 3 also includes a second slide rail assembly 34 and a mounting plate 33 for mounting the second slide rail assembly 34.

[0109] The second slide rail assembly 34 includes a second slide rail 341 and a second slider 342. The spacing block 31 is fixedly mounted on the second slider 342, and the second slider 342 is slidably disposed on the second slide rail 341. The second slide rail 341 extends longitudinally and is disposed on the mounting plate 33. The spacing block 31 can move longitudinally along the second slide rail 341 via the second slider 342.

[0110] Multiple second sliders 342 are configured, and each of the multiple second sliders 342 is installed in a one-to-one correspondence with a multiple spacing block 31.

[0111] In this embodiment, both the first slide rail 231 and the second slide rail 341 extend longitudinally. The dividing block 31 is elongated, with one end of the elongated dividing block 31 fixedly mounted on the first slider 232 and the middle part of the dividing block 31 fixedly mounted on the second slider 342. Therefore, it can be ensured that the dividing block 31 moves stably longitudinally under the drive of the drive linkage component 32, thereby driving the first slider 232 connected to the dividing block 31 and the rotating roller 21 mounted on the first slider 232 to move longitudinally along the first slide rail 231.

[0112] The separating mechanism 3 also includes a third slide rail assembly 35 mounted on the mounting plate 33. The third slide rail assembly 35 is used to guide the linkage plate 322 laterally. Specifically, the third slide rail assembly 35 includes a third slide rail 351 and a third slider 352. The linkage plate 322 is fixedly mounted on the third slider 352, and the third slider 352 is slidably disposed on the third slide rail 351. The third slide rail 351 extends laterally and is mounted on the mounting plate 33; the linkage plate 322 can move laterally along the third slide rail 351 via the third slider 352.

[0113] The power assembly 323 includes a ball screw 3231 and a first motor 3232. The ball screw 3231 extends laterally and is connected to the linkage plate 322 to convert rotational motion into linear motion to drive the linkage plate 322 to move laterally; the first motor 3232 is connected to the ball screw 3231 and is used to drive the ball screw 3231 to rotate.

[0114] The third slide rail assembly 35 and the ball screw 3231 are respectively located on both sides of the linkage plate 322 along the length direction to ensure that the linkage plate 322 moves stably in the lateral direction.

[0115] In this embodiment, the working principle of the spacing mechanism 3 for adjusting the distance between the rotating rollers 21 is as follows:

[0116] Driven by the first motor 3232, the ball screw 3231 converts rotational motion into linear motion, driving the linkage plate 322 to move laterally along the third slide rail 351. During the movement of the linkage plate 322, the linkage plate 322 will drive the guide member 321 to move along the guide groove 3221. Since the guide groove 3221 is obliquely set on the linkage plate 322, the guide member 321 can move both laterally and longitudinally relative to the linkage plate 322, so that multiple guide members 321 move closer or further apart along the guide groove 3221 to achieve aggregation or separation. Since the guide member 321 is fixedly installed on the spacing block 31, and the spacing block 31 is installed on the longitudinally sliding first slider 232 and second slider 342, the guide member 321 can drive the rotating roller 21 installed on the first slider 232 to achieve aggregation or separation, thereby adjusting the spacing between the rotating rollers 21, so as to adapt to core samples of different sizes.

[0117] Example 4

[0118] The multi-scale core image acquisition device in this embodiment is basically the same as that in Embodiment 3. The difference is that this embodiment further limits the arrangement of the multiple guide grooves on the linkage plate 322.

[0119] like Figure 11 As shown, multiple guide grooves 3221 are radially distributed, and the extension direction of the guide grooves 3221 has a preset angle with the X-axis. When the multiple guide members 321 slide under the guidance of the guide grooves 3221, the longitudinal distance between two adjacent guide members 321 is always equal, so that the distance between two adjacent rotating rollers 21 is equal.

[0120] Specifically, multiple rotating rollers 21 are arranged at intervals in an axisymmetric manner about a plane of symmetry, which is a plane in the ZX direction.

[0121] The guide groove 3221 is straight, and multiple guide grooves 3221 are radially distributed. The extension direction of the guide groove 3221 has a preset angle with the X-axis.

[0122] Optionally, the number of rotating rollers 21 is four, and the guide members 321 and guide grooves 3221 are also set to four accordingly.

[0123] like Figure 13 As shown, the projection of the symmetry plane onto the XY projection plane is a straight line AA. The extensions of the center lines of the projections of the four guide grooves 3221 onto the same XY plane are straight lines L1, L2, L3, and L4, respectively, arranged sequentially from back to front. Straight lines L1, L2, L3, and L4 intersect at a point O, which lies on straight line AA.

[0124] Let the angle between L1 and line AA be α1, and the angle between L2 and line AA be α2;

[0125] Then tanα1 = 3 * tanα2.

[0126] The arrangement of lines L1, L2, L3, and L4 is axially symmetric about line AA.

[0127] With this configuration, when multiple guide members 321 slide under the guidance of the guide groove 3221, the longitudinal distance between two adjacent guide members 321 is always equal, thereby ensuring that the distance between two adjacent rotating rollers 21 is equal.

[0128] Example 5

[0129] This embodiment is basically the same as Embodiments 1 to 4, except that the sample stage 2 in this embodiment also includes a dustproof plate 28, which is set below the rotating roller 21. Specifically, the separation mechanism 3 is installed in the accommodating cavity of the mounting frame 22, and the dustproof cover is placed on the accommodating cavity of the mounting frame 22 and is located between the separation mechanism 3 and the rotating roller 21.

[0130] like Figure 3 and Figure 4 As shown, the function of the dust cover is to catch the dust or ash that falls from the core sample, making it easy to clean and preventing the dust or ash from falling from the core sample from entering the housing cavity of the mounting frame 22.

[0131] The sample stage 2 also includes a cover 29 disposed on both sides of the rotating roller 21 along the axial direction. The cover 29 is used to cover the mounting base 24 of the rotating roller 21 and other components. The middle part of the rotating roller 21 is located outside the cover 29. The cover 29 is provided with a clearance groove 291 that allows the rotating roller 21 to move longitudinally. The clearance groove 291 extends longitudinally.

[0132] The cover 29 also serves a dustproof function, which not only prevents dust but also makes the overall structure more aesthetically pleasing and simple.

[0133] The cover 29 and the dustproof plate 28 are both installed and connected to the mounting frame 22 to form a closed box structure, and the rotating roller 21 is located outside the box structure.

[0134] Example 6

[0135] This embodiment is basically the same as embodiment five, except that the multi-scale core image acquisition device in this embodiment also includes a digital roller 4.

[0136] like Figure 4 and Figure 12As shown, the digital roller 4 is installed between two adjacent rotating rollers 21 and is used to mark the core sample. By operating the digital roller 4 to rotate the numbers on it, the sampling depth information of the core sample is indicated, which facilitates the entry of corresponding information during scanning and avoids the situation of scanning data confusion.

[0137] By moving the position of the digital roller 4, core samples at different locations can be labeled.

[0138] Specifically, a magnetic strip 5 is provided on the dustproof plate 28 in the area between two adjacent rotating rollers 21. The magnetic strip 5 is used to magnetically fix the digital roller 4. The magnetic strip 5 extends along the length of the rotating roller 21.

[0139] Example 7

[0140] This embodiment is basically the same as Embodiment 1, except that the multi-scale core image acquisition device in this embodiment also includes an XYZ axis moving mechanism 13. The XYZ axis moving mechanism 13 is mounted on the base 11, and the camera 12 is mounted on the XYZ axis moving mechanism 13. The XYZ axis moving mechanism 13 is used to drive the camera 12 to move back and forth, left and right, and up and down.

[0141] The XYZ axis moving mechanism 13 includes a lateral moving mechanism, a longitudinal moving mechanism, and a lifting mechanism.

[0142] Optionally, the camera 12 is mounted on a longitudinal moving mechanism, which is mounted on a lifting mechanism, which is mounted on a lateral moving mechanism, which is mounted on a base 11. In one embodiment, the lateral moving mechanism includes a lateral slide rail extending laterally and mounted on the base 11, and a lateral moving slider slidably mounted on the lateral slide rail; the lifting mechanism includes a vertical slide rail mounted on the lateral moving slider, and a vertical moving slider slidably mounted on the vertical slide rail; the longitudinal moving mechanism includes a longitudinal slide rail extending longitudinally and mounted on the vertical moving slider, and a longitudinal moving slider slidably mounted on the longitudinal slide rail. The camera 12 is fixedly mounted on the longitudinal moving slider.

[0143] The horizontal slider moves horizontally along the horizontal slide rail, which can drive the camera 12 to move horizontally, that is, to move left and right.

[0144] The vertical slider moves up and down along the vertical slide rail, which can drive the camera 12 to move up and down.

[0145] The vertical slider moves longitudinally along the longitudinal slide rail, which can drive the camera 12 to move longitudinally, that is, move back and forth.

[0146] Of course, the installation order of the lateral moving mechanism, the longitudinal moving mechanism, and the lifting mechanism can be adjusted according to actual needs, and this embodiment does not limit this.

[0147] The XYZ axis moving mechanism 13 is electrically connected to the controller, which can control the XYZ axis moving mechanism 13 to move the camera 12 forward, backward, left, right, and up and down.

[0148] In this embodiment, the base 11, the XYZ axis moving mechanism 13, and the camera 12 are assembled together to form the scanner 1.

[0149] Example 8

[0150] This invention provides a method for acquiring multi-scale core images, the method comprising the following steps:

[0151] The core sample is placed on two adjacent rotating rollers 21, and the spacing mechanism 3 is used to drive the two adjacent rotating rollers 21 closer or further apart according to the size of the core sample to be acquired, so as to adjust the distance between the two rotating rollers 21 to accommodate core samples of various sizes.

[0152] Images of the core samples were acquired using camera 12;

[0153] The rotating roller 21 is driven to rotate to flip the core sample at a preset angle, and the camera 12 is used to acquire images of the flipped core sample again.

[0154] Although the invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A device for acquiring multi-scale core images, characterized in that, It includes a base, a camera mounted on the base, and a sample stage set on the base; the sample stage includes at least two parallel rotating rollers, with a core sample placed between two adjacent rotating rollers, and the rotating rollers can rotate to cause the core sample to flip. The camera lens faces downwards and is located above the rotating roller; it also includes: The spacing mechanism, connected to a plurality of the rotating rollers, is used to drive two adjacent rotating rollers to move closer or further apart to adjust the spacing between the two rotating rollers.

2. The multi-scale core image acquisition device according to claim 1, characterized in that, Multiple rotating rollers are arranged to extend laterally, and the sample stage also includes a mounting frame and two sets of first slide rail assemblies mounted on the mounting frame; Two sets of first slide rail assemblies are respectively disposed at opposite ends of the rotating roller along the axial direction and are installed and connected to the rotating roller. The rotating roller can be slidably mounted on the mounting frame along the longitudinal direction through the two sets of first slide rail assemblies.

3. The multi-scale core image acquisition device according to claim 2, characterized in that, Each group of the first slide rail assembly includes: The first slide rail extends longitudinally and is mounted on the mounting bracket; The first slider is slidably set on the first slide rail. There are multiple first sliders, and the opposite ends of the multiple rotating rollers are installed and connected to the multiple first sliders one by one. The spacing mechanism is installed and connected to each of the first sliders in one of the first slide rail assemblies. The spacing mechanism can drive the first sliders to slide along the first slide rail to drive the rotating roller to move longitudinally.

4. The multi-scale core image acquisition device according to any one of claims 1-3, characterized in that, The plurality of rotating rollers are all arranged to extend laterally, and the spacing mechanism includes: Multiple spacing blocks are configured, and the multiple spacing blocks are arranged at intervals along the longitudinal direction and are connected to multiple rotating rollers one by one. A drive linkage component is connected to multiple of the spacing blocks. The drive linkage component is adapted to drive multiple rotating rollers to move longitudinally together by driving the multiple spacing blocks to move longitudinally together.

5. The multi-scale core image acquisition device according to claim 4, characterized in that, The drive linkage component includes: The guide component is fixedly connected to the spacing block; A linkage plate is provided with a guide groove that cooperates with the guide member. The guide groove is obliquely arranged. The linkage plate is adapted to move to drive the guide member to move along the guide groove, so as to drive multiple spacing blocks to move together longitudinally. A power component, connected to the linkage plate, is adapted to drive the linkage plate to move laterally.

6. The multi-scale core image acquisition device according to claim 5, characterized in that, The spacing mechanism further includes: Mounting plate; A second slide rail assembly is mounted on the mounting plate, and the spacing block is movable on the mounting plate in the longitudinal direction via the second slide rail assembly.

7. The multi-scale core image acquisition device according to claim 6, characterized in that, The second slide rail assembly includes: The second slide rail extends longitudinally and is mounted on the mounting plate; The second slider is slidably set on the second slide rail. There are multiple second sliders, and each of the multiple second sliders is installed in a one-to-one correspondence with a multiple spacing block.

8. The multi-scale core image acquisition device according to claim 5, characterized in that, The power assembly includes: A ball screw, extending laterally and connected to the linkage plate, is used to convert rotational motion into linear motion to drive the linkage plate to move laterally. The first motor is connected to the ball screw and is used to drive the ball screw to rotate.

9. The multi-scale core image acquisition device according to claim 1, characterized in that, The sample stage also includes: The dustproof plate, located below the rotating roller, is suitable for catching dust or ash that falls from the core sample.

10. The multi-scale core image acquisition device according to claim 1, characterized in that, Also includes: Digital rollers are used to label core samples.

11. The multi-scale core image acquisition device according to claim 1, characterized in that, The sample stage also includes: The second motor is configured as multiple motors, each connected to one of the multiple rotating rollers, and is used to drive the rotating rollers to rotate. The control panel is electrically connected to the second motor and is used to control the start and stop of the second motor in order to control the rotation angle of the rotating roller.

12. The multi-scale core image acquisition device according to claim 1, characterized in that, Also includes: An XYZ axis moving mechanism is mounted on the base, and the camera is mounted on the XYZ axis moving mechanism. The XYZ axis moving mechanism is used to drive the camera to move forward, backward, left, right, and up and down.

13. An image acquisition method applied to the multi-scale core image acquisition device of claims 1-12, characterized in that, Includes the following steps: The core sample is placed on two adjacent rotating rollers, and the two adjacent rotating rollers are driven to move closer or further apart according to the size of the core sample to be acquired, so as to adjust the distance between the two rotating rollers to accommodate core samples of various sizes. Images of core samples were acquired using a camera; The rotating roller is driven to rotate and flip the core sample at a preset angle. The camera is then used to capture images of the flipped core sample again.

Images