Positioning device for core sample image acquisition

Abstract

The application provides a positioning device for core sample image acquisition of core drilling, which comprises two positioning seats, a lifting platform and a self-falling belt. Each positioning seat is provided with a telescopic arm hinged thereto, and the telescopic arm is connected with a swing driving member. The lifting seat is hinged to the swing ends of the two telescopic arms on both sides. The self-falling belt is made of flexible material, one end of which is fixed on the lifting platform through a winding member, and the other end falls to the lower side of the lifting platform and is connected with a docking member connected with a shooting device. When positioning the shooting device, first, two sets of swing driving members drive two telescopic arms to swing synchronously to preliminarily position the shooting device in the up-down direction; then, the winding member winds up or releases the self-falling belt to secondarily position the shooting device in the up-down direction. The positioning device for core sample image acquisition of core drilling can ensure the image acquisition effect of the core sample group and improve the accuracy and reliability of the analysis results based on the image.

Description

Technical Field

[0001] This application belongs to the field of core sample image acquisition technology, specifically relating to a positioning device for core sample image acquisition. Background Technology

[0002] Core samples are cylindrical samples obtained through drilling from engineering structures such as concrete and rock. They serve as a direct basis for evaluating the quality and performance of the structure. Standardized image acquisition of the core sample surface aims to create a digital record for subsequent quantitative or qualitative assessments, such as strength analysis, defect identification, component statistics, and project acceptance. This is a crucial step in engineering quality inspection and information management.

[0003] In existing technologies, the drilled core samples are usually laid flat on the ground or placed on a tray on the ground, and the operator takes photos of the core sample group from above or at an angle using a handheld camera.

[0004] The inventors discovered that existing technologies that rely on manual handheld shooting depend entirely on the operator's visual perception and experience to align the core sample group. The entire process lacks effective positioning and guidance, resulting in an unstable spatial position, angle, height, and centering point of the shooting equipment. This makes it difficult to accurately align the camera's optical axis with the geometric center of the core sample group, easily causing problems such as shooting offset, image distortion, and sample edge cutting. Consequently, the image acquisition effect deteriorates, affecting the accuracy and reliability of subsequent image-based measurement, recognition, and analysis results. Utility Model Content

[0005] This application provides a positioning device for acquiring core sample images, which aims to ensure image acquisition quality and improve the accuracy and reliability of subsequent analysis results obtained based on the images.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: A positioning device for acquiring core sample images is provided, comprising: Two positioning seats are used to be fixedly installed on the front and rear sides of the core sample assembly, respectively. Each positioning seat is hinged with a telescopic arm in the left-right direction, and the telescopic arm is driven by a swing drive component. A lifting platform, positioned above the center of the core sample assembly, is hinged in the left-right direction to the side facing the positioning seat and the end corresponding to the telescopic arm; and The self-dangling strap is made of flexible material; one end of the self-dangling strap is fixed to the lifting platform by a winding member, and the other end hangs naturally to the lower side of the lifting platform and is connected to a docking member for connecting to the shooting equipment.

[0007] In one possible implementation, the telescopic arm includes: A strip-shaped shell is disposed on the upper side of the positioning seat and is hinged to the upper side of the positioning seat in a left-right direction; the strip-shaped shell has a receiving cavity extending through its swing end face; and An extension arm is coaxially disposed within the receiving cavity, has a degree of freedom to move along the length of the strip shell, and the extended end of the extension arm is hinged to the lifting platform.

[0008] In one possible implementation, the telescopic arm has a mounting hole extending in the left-right direction, and the swing drive component includes: A first rotary motor is fixedly mounted on the positioning seat, and its power output axis is parallel to the left-right direction; and The insertion rod is coaxially connected to the power output end of the first rotating motor and is inserted into the mounting hole so that the telescopic arm swings synchronously when the first rotating motor is started.

[0009] In one possible implementation, the positioning seat has a limiting plate that is slidably connected to it in the vertical direction; the limiting plate is connected to the positioning seat by an elastic element so that the limiting plate moves to the upper side of the positioning seat and closes the opening of the mounting hole facing away from the first rotating motor.

[0010] In one possible implementation, the bottom surface of the positioning seat is provided with a groove, the elastic element is a spring with one end fixedly connected to the bottom of the groove, and the other end of the spring is connected to the lower end of the limiting plate. When the limiting plate moves to close the mounting hole, the spring is in an elastically stretched state or a natural state.

[0011] In one possible implementation, the lifting platform has a through hole in the vertical direction; the self-draping belt is inserted into the through hole, and its two ends are respectively connected to the winding member and the docking member.

[0012] In one possible implementation, the winding member includes: A take-up roller is rotatably mounted on the upper side of the lifting platform, with both its axial direction and rotational axis parallel to the front-rear direction. The outer wall of the take-up roller is connected to the end of the self-draping tape, so that when the take-up roller rotates, the self-draping tape either winds around the outer circumference of the take-up roller or detaches from it. The second rotating motor is fixedly mounted on the lifting platform and is connected to the winding roller for driving the winding roller to rotate.

[0013] In one possible implementation, a driven gear is coaxially connected to the take-up roller, and a driving gear that meshes with the driven gear is coaxially connected to the power output shaft of the second rotary motor. The number of teeth of the driving gear is less than the number of teeth of the driven gear.

[0014] In one possible implementation, the lower end of the self-dangling strap has a mounting plate extending in a horizontal direction, and the docking member includes two clamps arranged side by side in a front-rear direction on the underside of the mounting plate. Each of the clamping plates is hinged to the mounting plate in the left-right direction and connected to the mounting plate through an elastic reset member; or, both clamping plates are fixedly connected to the mounting plate, and the clamping plates are made of elastic material.

[0015] In one possible implementation, the bottom of the positioning base is connected to multiple legs, each of which has a reinforcing stake for insertion into the ground.

[0016] In this embodiment, since the lifting platform is hinged to two positioning seats by telescopic arms on both sides, and the telescopic arms themselves have the degrees of freedom of extension and retraction and swing controlled by the swing drive component, when positioning the imaging device, the extension length of the two telescopic arms can be adjusted first to move the lifting platform to the center area above the core sample group; then, by synchronously driving the telescopic arms to swing through the two sets of swing drive components, the lifting platform can be accurately positioned in the vertical direction to ensure that its projection covers the geometric center of the core sample group.

[0017] In the above process, the shooting equipment is suspended from the lower end of the self-dwelling strap via a docking component. Because the self-dwelling strap is made of flexible material, it naturally maintains a vertical position under gravity, ensuring that the camera optical axis of the suspended shooting equipment remains vertically downward regardless of the height of the lifting platform. Based on this, by operating the rewinding component fixed to the lifting platform to raise and lower the self-dwelling strap, precise secondary positioning of the shooting equipment in the vertical direction can be achieved, realizing separate and coordinated adjustment of the shooting height and the centering point.

[0018] The aforementioned mechanical positioning method transforms the spatial alignment problem, which originally relied on manual visual inspection, into a problem of hinge point position and flexible belt length that can be precisely controlled by mechanical structure.

[0019] The positioning device for core sample image acquisition provided in this embodiment, compared with the prior art, achieves coarse adjustment and stable support of the imaging device at the horizontal center point and in the vertical direction. Furthermore, a flexible self-hanging structure ensures the absolute verticality of the optical axis of the imaging device and allows for fine-tuning of the height, thus solving problems such as unstable spatial position and inaccurate centering caused by manual handheld shooting. This device ensures consistency in the viewing angle, center point, and height for each shot, significantly improving the standardization and repeatability of core sample image acquisition. This provides a high-quality, highly reliable data foundation for subsequent image-based analysis, effectively solving the core problem in the prior art where poor image acquisition results negatively impacted accuracy. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of the positioning device provided in the embodiments of this application; Figure 2 for Figure 1 A magnified view of a portion of the upper circle at point A; Figure 3 This is a three-dimensional structural diagram of the positioning seat and swing drive component used in the embodiments of this application in a combined state; Figure 4 This is an exploded structural diagram of the swing drive component used in the embodiments of this application; Figure 5 This is a three-dimensional structural diagram of the positioning seat and limiting plate used in the embodiments of this application in a combined state; Figure 6 This is a partially enlarged schematic diagram of the positioning seat and limiting plate used in the embodiments of this application from an exploded view. Figure 7 This is an exploded view of the telescopic arm used in the embodiments of this application; Figure 8 This is a three-dimensional structural diagram of the lifting platform, self-dangling belt, winding component, and docking component used in the embodiments of this application in a combined state. Figure 9 This is a partially enlarged schematic diagram of the self-dangling strap and docking component used in the embodiments of this application in the combined state; Figure 10 This is a three-dimensional structural diagram of the lifting platform used in the embodiments of this application; Figure 11 This is an exploded structural diagram of the winding component used in the embodiments of this application; Explanation of reference numerals in the attached drawings: 1. Positioning seat; 11. Limiting plate; 12. Groove; 13. Elastic element; 14. Support leg; 15. Reinforcing pile; 2. Lifting platform; 21. Positioning hole; 3. Self-dangling belt; 31. Mounting plate; 4. Telescopic arm; 41. Strip shell; 411. Receiving cavity; 412. Mounting hole; 42. Extension arm; 5. Swing drive component; 51. First rotating motor; 52. Insert rod; 6. Winding component; 61. Winding roller; 611. Driven gear; 62. Second rotating motor; 621. Drive gear; 7. Connecting component. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0023] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0024] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] Please refer to the following: Figures 1 to 11 The positioning device for acquiring core sample images provided in this application will now be described. The positioning device for acquiring core sample images proposed in this application includes two positioning seats 1, a lifting platform 2, and a self-dwelling belt 3.

[0027] Two positioning seats 1 are used to fix the core sample assembly on the front and rear sides respectively. Each positioning seat 1 has a telescopic arm 4 hinged in the left-right direction, and each telescopic arm 4 is driven by a swing drive component 5. In actual use, the two sets of swing drive components 5 are started and stopped synchronously by a control system.

[0028] The lifting platform 2 is used to be set above the center of the core sample group. The front and rear sides of the lifting platform 2 are respectively hinged to two telescopic arms 4. Specifically, the side of each lifting platform 2 facing the positioning seat 1 is hinged to the end of the corresponding telescopic arm 4 in the left and right direction.

[0029] The self-dangling strap 3 is made of flexible material. One end of the self-dangling strap 3 is fixed to the lifting platform 2 by the winding member 6, and the other end hangs down naturally to the lower side of the lifting platform 2, and is connected to the docking member 7 for connecting with the shooting equipment.

[0030] In this embodiment, the two positioning seats 1 form the stable foundation of the device. During operation, the telescopic arms 4 on both sides are first adjusted to move the lifting platform 2 horizontally, initially positioning it directly above the center area of ​​the core sample group. Then, the two swing drive components 5 are activated to synchronously drive the telescopic arms 4 to swing, thereby enabling the lifting platform 2 to achieve precise initial height positioning in the vertical direction. This design, through a rigid robotic arm structure, achieves coarse adjustment and stable positioning of the imaging device's suspension point in the horizontal and vertical directions, ensuring that the projection of the lifting platform 2 accurately covers the geometric center of the core sample group.

[0031] The imaging equipment is suspended from the lower end of the self-dwelling strap 3 via the docking component 7. Because the self-dwelling strap 3 is made of flexible material, it naturally maintains a vertical position under gravity. This physical characteristic ensures that regardless of the height of the lifting platform 2, the camera optical axis of the suspended imaging equipment can automatically align with the core sample assembly plane and remain vertically downward. Based on this, by operating the rewinding component 6 to raise and lower the self-dwelling strap 3, the imaging equipment can be precisely positioned steplessly in the vertical direction, thereby achieving separate and coordinated adjustment of the imaging height and the horizontal center point.

[0032] The aforementioned method transforms the spatial alignment problem, which relies on human experience, into a coordinate positioning problem that can be precisely controlled by a mechanical structure. In other words, compared to existing technologies, this device achieves coarse adjustment and stable support through a rigid articulated arm, combined with a flexible self-dwelling strap 3 to achieve optical axis self-dwelling and fine height adjustment, fundamentally eliminating the positional drift, misalignment, and angle tilt problems caused by manual handheld shooting. This device ensures high consistency in the viewing angle, center point, and height parameters for each shot, significantly improving the standardization and repeatability of core sample image acquisition, thus providing a high-quality, highly reliable data foundation for subsequent image analysis.

[0033] In some embodiments, such as Figure 1 and Figure 7 As shown, the telescopic arm 4 includes a strip-shaped shell 41 and an extension arm 42.

[0034] The strip-shaped shell 41 is disposed on the upper side of the positioning seat 1 and is hinged to the upper side of the positioning seat 1 in the left-right direction. The strip-shaped shell 41 has a receiving cavity 411 that extends through its swing end face.

[0035] The extension arm 42 is coaxially disposed within the receiving cavity 411 and has the freedom to move along the length of the strip shell 41. The extended end of the extension arm 42 is hinged to the lifting platform 2.

[0036] By adopting the above technical solution, the structure decomposes the telescopic function into the swing of the strip shell 41 and the linear extension of the extension arm 42, making the movement trajectory of the lifting platform 2 controllable. It can achieve both a wide range of horizontal position adjustment and fine height adjustment.

[0037] In some embodiments, such as Figure 3 , Figure 4 and Figure 7 As shown, the telescopic arm 4 has a mounting hole 412 that runs through the left and right directions; based on this, the aforementioned swing drive component 5 includes a first rotating motor 51 and a plug rod 52.

[0038] The first rotating motor 51 is fixedly mounted on the positioning seat 1, and its power output axis is parallel to the left and right directions.

[0039] The insertion rod 52 is coaxially connected to the power output end of the first rotating motor 51 and is inserted into the mounting hole 412.

[0040] By adopting the above technical solution, when the first rotating motor 51 starts, the telescopic arm 4 can be directly driven to swing synchronously around its hinge point via the insertion rod 52. This design directly converts rotational motion into swinging motion, resulting in a short transmission path, compact structure, and precise control.

[0041] In some embodiments, such as Figure 3 , Figure 5 and Figure 6 As shown, the positioning seat 1 has a limiting plate 11 that is slidably connected to it in the vertical direction.

[0042] The limiting plate 11 is connected to the positioning seat 1 by an elastic element 13. This elastic connection structure makes the limiting plate 11 tend to move upward and close the opening of the mounting hole 412 facing away from the first rotating motor 51.

[0043] By adopting the above technical solution, the limiting plate 11 can axially limit the telescopic arm 4, preventing it from detaching from the insertion rod 52 during operation, thus ensuring the reliability of the swing drive process.

[0044] In some embodiments, such as Figure 6 As shown, the bottom surface of the positioning seat 1 has a groove 12. The elastic element 13 is a spring with one end fixedly connected to the bottom of the groove 12, and the other end of the spring is connected to the lower end of the limiting plate 11.

[0045] When the limiting plate 11 moves to the position of closing the mounting hole 412, the spring is in an elastic tension state or a natural state.

[0046] By adopting the above technical solution, the spring provides a continuous elastic preload to the limiting plate 11, enabling it to automatically reset and maintain a closed state on the mounting hole 412, making the operation simple and safe.

[0047] In some embodiments, such as Figure 8 and Figure 10 As shown, the lifting platform 2 has a beam positioning hole 21 that runs through the vertical direction. The self-dangling belt 3 is slidably inserted into the beam positioning hole 21, and its two ends are respectively connected to the winding member 6 and the docking member 7.

[0048] Among them, the beam positioning hole 21 constrains and guides the travel path of the self-hanging belt 3, reducing the possible lateral swaying during the extension and retraction process, and further ensuring the stability of the shooting equipment suspension point.

[0049] In some embodiments, such as Figure 2 , Figure 8 and Figure 10 As shown, the winding component 6 includes a winding roller 61 and a second rotating motor 62.

[0050] The take-up roller 61 is rotatably mounted on the upper side of the lifting platform 2, with its axial direction and rotational axis both parallel to the front-back direction. Furthermore, the outer wall of the take-up roller 61 is connected to the end of the self-draping belt 3; when the take-up roller 61 rotates, the self-draping belt 3 is wound around the outer periphery of the take-up roller 61 or released from it.

[0051] The second rotating motor 62 is fixedly mounted on the lifting platform 2 and is connected to the winding roller 61 for transmission, and is used to provide power to drive the winding roller 61 to rotate.

[0052] By adopting the above technical solution, the driving method of the second rotating motor 62 realizes the electric precision control of the length of the self-dangling belt 3, thereby accurately adjusting the shooting height.

[0053] In some embodiments, such as Figure 8 and Figure 10 As shown, a driven gear 611 is coaxially connected to the take-up roller 61, and a driving gear 621 is coaxially connected to the power output shaft of the second rotating motor 62; the driving gear 621 meshes with the driven gear 611.

[0054] In this design, the number of teeth on the driving gear 621 is less than the number of teeth on the driven gear 611. This gear reduction mechanism amplifies the output torque of the second rotary motor 62, making the winding operation smoother and more powerful. At the same time, it also reduces the rotational speed, achieving a finer height adjustment resolution, which is beneficial for millimeter-level precise positioning.

[0055] In some embodiments, such as Figure 8 and Figure 9 As shown, the lower end of the drooping strap 3 has a mounting plate 31 extending in the horizontal direction; based on this, the aforementioned docking member 7 includes two clamping plates arranged side by side in the front-rear direction on the lower side of the mounting plate 31.

[0056] Both clamps can be designed to be hinged to the mounting plate 31 and connected by an elastic reset element (such as a torsion spring), or they can be made of elastic material and fixedly connected to the bottom surface of the mounting plate 31.

[0057] By adopting the above technical solution, the two clamps can be adapted to shooting equipment of different sizes and models (such as cameras and mobile phones), and can be reliably clamped and fixed by elastic force or hinge opening and closing, realizing the quick installation and disassembly of the equipment.

[0058] In some embodiments, such as Figure 3 and Figure 5 As shown, the bottom of the positioning base 1 is connected to multiple support legs 14, and each support leg 14 has a reinforcing pile 15 for insertion into the ground.

[0059] In this embodiment, the outrigger 14 increases the contact area between the device and the ground, improving overall stability. Furthermore, the reinforcing pile 15 can be inserted into soft ground, effectively preventing the entire device from sliding or overturning during adjustment or use, ensuring operational safety and positioning accuracy under field conditions.

[0060] The above content is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A positioning device for acquiring images of drill core samples, characterized in that, include: Two positioning seats are used to be fixedly installed on the front and rear sides of the core sample assembly, respectively. Each positioning seat is hinged with a telescopic arm in the left-right direction, and the telescopic arm is driven by a swing drive component. A lifting platform, positioned above the center of the core sample assembly, is hinged in the left-right direction to the side facing the positioning seat and the end corresponding to the telescopic arm; and The self-dangling strap is made of flexible material; one end of the self-dangling strap is fixed to the lifting platform by a winding member, and the other end hangs naturally to the lower side of the lifting platform and is connected to a docking member for connecting to the shooting equipment.

2. The positioning device for acquiring core sample images as described in claim 1, characterized in that, The telescopic arm includes: A strip-shaped shell is disposed on the upper side of the positioning seat and is hinged to the upper side of the positioning seat in a left-right direction; the strip-shaped shell has a receiving cavity extending through its swing end face; and An extension arm is coaxially disposed within the receiving cavity, has a degree of freedom to move along the length of the strip shell, and the extended end of the extension arm is hinged to the lifting platform.

3. The positioning device for acquiring core sample images as described in claim 1 or 2, characterized in that, The telescopic arm has a through mounting hole running in the left-right direction, and the swing drive component includes: A first rotary motor is fixedly mounted on the positioning seat, and its power output axis is parallel to the left-right direction; and The insertion rod is coaxially connected to the power output end of the first rotating motor and is inserted into the mounting hole so that the telescopic arm swings synchronously when the first rotating motor is started.

4. The positioning device for acquiring core sample images as described in claim 3, characterized in that, The positioning seat has a limiting plate that is slidably connected to it in the vertical direction; the limiting plate and the positioning seat are connected by an elastic element so that the limiting plate moves to the upper side of the positioning seat and closes the opening of the mounting hole facing away from the first rotating motor.

5. The positioning device for acquiring core sample images as described in claim 4, characterized in that, The bottom surface of the positioning seat is provided with a groove, and the elastic element is a spring with one end fixedly connected to the bottom of the groove, and the other end of the spring is connected to the lower end of the limiting plate. When the limiting plate moves to close the mounting hole, the spring is in an elastically stretched state or a natural state.

6. The positioning device for acquiring core sample images as described in claim 1, characterized in that, The lifting platform has a bead hole that runs through the vertical direction; the self-dangling belt is inserted into the bead hole, and its two ends are respectively connected to the winding member and the docking member.

7. The positioning device for acquiring core sample images as described in claim 1 or 6, characterized in that, The winding component includes: A take-up roller is rotatably mounted on the upper side of the lifting platform, with both its axial direction and rotational axis parallel to the front-rear direction. The outer wall of the take-up roller is connected to the end of the self-draping tape, so that when the take-up roller rotates, the self-draping tape either winds around the outer circumference of the take-up roller or detaches from it. The second rotating motor is fixedly mounted on the lifting platform and is connected to the winding roller for driving the winding roller to rotate.

8. The positioning device for acquiring core sample images as described in claim 7, characterized in that, A driven gear is coaxially connected to the take-up roller, and a driving gear that meshes with the driven gear is coaxially connected to the power output shaft of the second rotating motor. The number of teeth of the driving gear is less than the number of teeth of the driven gear.

9. The positioning device for acquiring core sample images as described in claim 1, characterized in that, The lower end of the self-dangling strap has a mounting plate extending in a horizontal direction, and the docking member includes two clamping plates arranged side by side in a front-rear direction on the lower side of the mounting plate. Each of the clamping plates is hinged to the mounting plate in the left-right direction and connected to the mounting plate through an elastic reset member; or, both clamping plates are fixedly connected to the mounting plate, and the clamping plates are made of elastic material.

10. The positioning device for acquiring core sample images as described in claim 1, characterized in that, The bottom of the positioning seat is connected to multiple legs, and each leg has a reinforcing stake for insertion into the ground.

Images