A visual detection device and method for low-carbon mining of downhole boreholes

Abstract

This invention relates to a low-carbon mining technology, specifically a low-carbon downhole borehole visual detection device and its detection method. The device includes a frame structure, a cable roller rotatably mounted on the frame structure, a cable wound around the cable roller, and a detection assembly connected to the free end of the cable. The detection assembly includes a rear cover and a front cover connected by threads. A sleeve is formed at the end of the rear cover away from the front cover, and the top of the sleeve is fixed to the cable's degree of freedom. A counterweight is detachably mounted on the sleeve. Multiple rubber wheels for elastically fitting against the borehole wall are distributed at equal angles along the circumference of the rear cover. The rubber wheels are connected to the visual probe through a vibration structure. When the cable roller rotates to release the cable, allowing the detection assembly to descend along the borehole under the action of the counterweight, the rubber wheels roll along the borehole wall, causing the visual probe to vibrate through the vibration structure.

Description

Technical Field

[0001] This invention relates to a low-carbon mining technology, specifically a low-carbon mining downhole borehole visual detection device and its detection method. Background Technology

[0002] With increasing environmental awareness, low-carbon mining technologies have been vigorously developed. Low-carbon mining refers to mining methods that reduce greenhouse gas (mainly carbon dioxide) emissions through technological innovation and optimization of mining processes during resource extraction. This mining method aims to reduce the impact on the environment while improving resource utilization efficiency, achieving a win-win situation for both the economy and the environment.

[0003] Low-carbon extraction not only helps reduce greenhouse gas emissions, but also improves resource recovery, extends the life cycle of oil fields, and reduces production costs. Common low-carbon extraction technologies include well-type and fracturing techniques used to improve resource utilization for resources such as shale gas and coalbed methane.

[0004] Before underground mining, boreholes need to be drilled from the surface into the coal seam to be mined. Core samples are taken from these boreholes to determine the lithology of the mining area. Typically, underground detection instruments are also used to photograph the boreholes to obtain internal images. Ultimately, by analyzing these imaging data, the color of the rock strata, joints, the presence of water seepage, and the development of fractures can be identified.

[0005] Various problems may occur during actual exploration. For example, because the rock strata of this mine have a high water content, water vapor will accumulate and condense on the probe glass cover, affecting the imaging effect.

[0006] Another common situation on site is that stone chips occasionally fall inside the borehole. The stone chips and dust combine with water vapor and adhere to the glass cover outside the probe, resulting in poor imaging. Summary of the Invention

[0007] The purpose of this invention is to provide a low-carbon mining downhole borehole visual detection device and its detection method to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A low-carbon mining downhole borehole visual detection device includes a frame structure, a cable roller rotatably mounted on the frame structure, a cable wound on the cable roller, and a detection component connected to the free end of the cable.

[0010] The viewing assembly includes a rear cover and a front cover connected by threads. A sleeve is formed at the end of the rear cover away from the front cover. The top of the sleeve is fixed to the free end of the cable. A counterweight is detachably provided on the sleeve.

[0011] A visual probe is movably installed inside the front cover and connected to the free end of a cable via a spring wire. The visual probe integrates a heat collection module.

[0012] Multiple rubber wheels for elastically fitting with the borehole wall are arranged at equal angles along the circumference of the rear cover. The rubber wheels are connected to the visual probe through a vibration structure.

[0013] When the cable roller rotates to release the cable, so that the viewing assembly is lowered along the borehole under the action of the counterweight, the rubber wheel rolls along the borehole wall and drives the viewing probe to vibrate through the vibration structure.

[0014] The low-carbon mining downhole borehole visual detection device described above: the rear cover is provided with multiple windows, which are distributed at equal angles along the circumference of the rear cover, and mounting parts are integrally formed on both sides of the windows;

[0015] The rubber wheel is fixedly mounted on the first pin, which is detachably rotatably mounted on the top of the swing frame. A second pin is detachably rotatably mounted at the middle position of the swing frame and is rotatably connected to the mounting part.

[0016] The lower end of the swing frame is rotatably equipped with a pulley via a detachable third pin, and the pulley is connected to the front cover through an elastic structure.

[0017] The low-carbon mining downhole borehole visual detection device described above: the front cover includes a coarse straight section and a fine straight section, with a step formed between the coarse straight section and the fine straight section; wherein, the fine straight section is disposed inside the rear cover, and a tray is slidably sleeved on the fine straight section;

[0018] The elastic structure includes a push spring that is pressed between the step and the tray, and the push spring is sleeved on the outer periphery of the thin straight section; one end of the push spring abuts against the step, and the other end abuts against the tray, and the pulley makes rolling contact with the upper surface of the tray.

[0019] The downhole borehole visual detection device for low-carbon mining as described above: the vibration structure includes a ring frame fixedly installed inside the rear cover, a rotating sleeve rotatably installed inside the rear cover, and a vibration sleeve connecting the rotating sleeve and the visual probe;

[0020] When the rubber wheel drives the first pin to rotate, it can drive the rotating sleeve to rotate; the vibrating sleeve is elastically slidably sleeved on the upper part of the front cover, and the upper part of the vibrating sleeve is slidably sleeved on the lower part of the rotating sleeve.

[0021] A first groove is formed on the lower inner wall of the rotating sleeve, and a second groove is formed on the upper outer wall of the vibrating sleeve, which is compatible with the first groove.

[0022] The downhole borehole visual detection device for low-carbon mining as described above: a connecting column is provided inside the front cover, and the upper part of the connecting column is slidably fitted with the lower part of the vibrating sleeve;

[0023] A flat key is formed on the inner wall of the thin straight section, and a keyway that slides and fits into the flat key is formed on the outer wall of the vibrating sleeve.

[0024] The lower outer wall of the connecting column has two rings of clamps, and a ring is fixedly fitted between the two rings of clamps. The ring is connected to the inner wall of the front cover.

[0025] A vibration spring is fitted around the upper outer periphery of the connecting column. The lower end of the vibration spring abuts against a ring of clamps located on the upper layer, and the upper end touches against the bottom edge of the vibration sleeve.

[0026] The low-carbon mining downhole borehole visual detection device described above: a hollow tube is slidably inserted inside the connecting column, the upper end of the hollow tube is connected to the inner wall of the vibrating sleeve, and the lower end of the hollow tube is connected to the visual probe.

[0027] The top end of the rotating sleeve has multiple first recessed holes, and the bottom end has multiple second recessed holes; the top end of the front cover has a ring-shaped recessed rail, and the interior of the rear cover has a recessed rail.

[0028] Each first recess and each second recess are fitted with rolling balls. The rolling balls in the first recess roll into contact with the recessed rail inside the rear cover, and the rolling balls in the second recess roll into contact with the annular recessed rail.

[0029] The low-carbon mining downhole borehole visual detection device described above: a large gear is also fixedly installed on the first pin shaft, wherein the circumferential radius of the large gear is smaller than the radius of the rubber wheel;

[0030] A small gear that meshes with the large gear is fixedly installed on the second pin shaft, and a first bevel gear is also fixedly installed on the second pin shaft;

[0031] The ring frame is radially rotatably provided with a rotating shaft. One end of the rotating shaft is fixedly installed with a second bevel gear that meshes with the first bevel gear, and the other end of the rotating shaft is fixedly installed with a third bevel gear. A bevel gear ring that meshes with the third bevel gear is fixedly provided on the outer wall of the rotating sleeve.

[0032] The low-carbon mining borehole visual detection device described above: a deflectable swing arm is provided on one side of the frame structure, one end of the swing arm is rotatably connected to the frame structure, and the other end is rotatably equipped with a support roller;

[0033] A cylinder is also provided between the swing arm and the frame structure. One end of the cylinder is rotatably connected to the frame structure, and the other end is rotatably connected to the swing arm.

[0034] The frame structure is equipped with an installation beam, and the installation beam is equipped with an elastic guide. A visual image screen communicating with the cable is installed on the top of the frame structure. One side of the cable roller is connected to a cable winding and unwinding motor installed on the frame structure.

[0035] The downhole borehole visual detection device for low-carbon mining as described above: the elastic guide includes a collapsible main frame, a front guide roller rotatably disposed on one side of the collapsible main frame, a rear guide roller rotatably disposed on the other side of the collapsible main frame, and a steering guide roller disposed between the front guide roller and the rear guide roller.

[0036] The collapsible main frame adopts a deformable cross metal frame, and a collapse spring is provided on the cross metal frame. The top of the collapsible main frame is connected to the mounting beam through a top plate.

[0037] A rotating frame is rotatably mounted on the base plate of the collapsible main frame, and the steering guide roller is rotatably mounted on the rotating frame.

[0038] A method for detecting downhole boreholes using the low-carbon mining downhole visual detection device described above includes the following steps:

[0039] Step 1, cable connection and communication test: insert one end of the cable into the inside of the cable roller along the radial direction of the cable roller, and then pass it out from the end of the cable roller away from the cable winding motor. Connect the signal line using the brush and turn on the visualization screen.

[0040] Next, connect the free end of the cable to the visual probe via a spring wire, power on the visual image screen and the visual probe, and check whether the image signal transmission is smooth.

[0041] Step 2: Adjust the swing arm swing using the cylinder to align the inspection component with the borehole, and then start the cable reel motor in the forward direction to release the cable roller and insert the inspection component into the borehole.

[0042] Step 3: Fixed-depth image acquisition. The cable is laid down at a predetermined depth gradient and stable image information is acquired at that depth position. The images are then transmitted to a visualization screen and stored.

[0043] Step four involves comparing and analyzing the images acquired at each depth gradient, including the degree of development of macroscopic crisscrossing fractures in the borehole wall rock, the number of fractures, the width of fractures, and the location of fractures, in order to evaluate the deep-hole blasting effect.

[0044] Compared with the prior art, the beneficial effects of the present invention are: when the cable is loosened by rotating the cable roller, the free end of the cable is connected to the inspection component. Therefore, under the action of the counterweight in the inspection component, the inspection component is continuously lowered along the borehole as the cable is loosened.

[0045] Because the rubber wheel is elastic and tightly attached to the borehole wall, it rotates continuously as the entire viewing assembly is lowered, eventually causing the viewing probe to vibrate continuously through the vibration structure.

[0046] In this invention, the heat collection module integrated on the visual probe generates heat to evaporate the water vapor on the surface of the glass cover at the front end of the visual probe, thus preventing water vapor from accumulating and adhering to the glass cover at the front end of the visual probe and affecting the imaging effect.

[0047] Meanwhile, the rubber wheels, which are set to elastically fit the borehole wall, rotate continuously during the lowering process. In conjunction with the vibration structure, the visual probe vibrates rapidly, which can shake off any rock debris that occasionally falls into the borehole, further improving the imaging effect. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of a downhole borehole visual detection device for low-carbon mining.

[0049] Figure 2 A schematic diagram of the structure of a downhole borehole visual detection device for low-carbon mining from another perspective.

[0050] Figure 3 This is a structural schematic diagram of a downhole borehole visual detection device for low-carbon mining, taken from another perspective.

[0051] Figure 4 This is a schematic diagram of the device structure after partial dismantling of the frame structure.

[0052] Figure 5 for Figure 4 A structural diagram from another perspective.

[0053] Figure 6 for Figure 4 Another structural diagram from a different perspective.

[0054] Figure 7 for Figure 4 Another structural diagram from a different perspective.

[0055] Figure 8 In order to be in Figure 4 Based on this, a structural diagram of the dismantled frame structure is provided.

[0056] Figure 9 This is a schematic diagram of the structure of an elastic guide.

[0057] Figure 10A schematic diagram of the overall structure of the detection component in a downhole borehole visual detection device for low-carbon mining.

[0058] Figure 11 In order to be in Figure 10 This is a structural diagram showing the structure after removing the internal visual probe, spring wire, and external counterweight.

[0059] Figure 12 In order to be in Figure 11 The diagram shows the structure after further separating the front and rear covers.

[0060] Figure 13 In order to be in Figure 12 Based on this, only the front cover and its attached structures are retained as schematic diagrams.

[0061] Figure 14 In order to be in Figure 13 This is a diagram illustrating the disassembly of one set of rubber wheels, based on the previous diagram.

[0062] Figure 15 for Figure 14 A diagram from another angle.

[0063] Figure 16 for Figure 15 Enlarged view of point A in the middle.

[0064] Figure 17 In order to be in Figure 15 The diagram shows the structure after removing the rubber wheels and taking out the ring frame.

[0065] Figure 18 for Figure 17 Enlarged view of point B in the middle.

[0066] Figure 19 In order to be in Figure 17 The diagram shows the structure after removing the ring frame and disassembling the rotating sleeve.

[0067] Figure 20 for Figure 19 A magnified view of point C in the middle.

[0068] Figure 21 for Figure 19 A structural diagram from another angle.

[0069] Figure 22 for Figure 21 Enlarged view of point D in the middle.

[0070] Figure 23 In order to be in Figure 21 The cross-sectional view after removing the rotating sleeve.

[0071] Figure 24 for Figure 23 Disassembly diagram.

[0072] Figure 25 This is a 3D diagram showing the disassembled connecting column of the vibratory sleeve and the jacking spring machine.

[0073] In the diagram: 1. Frame structure; 2. Cable roller; 3. Cable; 4. Elastic guide; 401. Collapsible main frame; 402. Top plate; 403. Front guide roller; 404. Collapsible spring; 405. Base plate; 406. Turning frame; 407. Steering guide roller; 408. Rear guide roller; 5. Viewing assembly; 501. Rear cover; 5011. Window; 5012. Mounting part; 502. Front cover; 5021. Circular concave rail; 5022. Flat key; 503. Sleeve; 504. Viewing probe; 505. Spring wire; 506. External threaded sleeve; 507. Limiting plate; 508. Locking nut; 509. Push spring; 510. Tray; 511. Swing frame; 512. Slide 513. Wheel; 514. Rubber wheel; 515. First pin; 516. Large gear; 517. Small gear; 518. Second pin; 519. First bevel gear; 520. Ring frame; 521. Third bevel gear; 522. Bevel gear ring; 523. Rotating sleeve; 5231. First grooved ring; 5232. First concave hole; 5233. Second concave hole; 524. Vibration sleeve; 5241. Second grooved ring; 5242. Keyway; 525. Connecting column; 526. Vibration spring; 527. Heat collection module; 6. Visual image screen; 7. Cable winding motor; 8. Swing arm; 9. Cylinder; 10. Idler roller; 11. Mounting beam; 12. Counterweight. Detailed Implementation

[0074] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0075] Please see Figures 1-25 As an embodiment of the present invention, the low-carbon mining downhole borehole visual detection device includes a frame structure 1, a cable roller 2 rotatably mounted on the frame structure 1, a cable 3 wound on the cable roller 2, and a detection component 5 connected to the free end of the cable 3.

[0076] The viewing assembly 5 includes a rear cover 501 and a front cover 502 connected by threads. A sleeve 503 is formed at the end of the rear cover 501 away from the front cover 502. The top end of the sleeve 503 is fixed to the free end of the cable 3. A counterweight 12 is detachably provided on the sleeve 503.

[0077] A visual probe 504 is movably installed inside the front cover 502 and connected to the free end of the cable 3 via a spring wire 505. A heat collection module 527 is integrated on the visual probe 504.

[0078] Multiple rubber wheels 513 for elastically fitting with the borehole wall are arranged at equal angles along the circumference of the rear cover 501. The rubber wheels 513 are connected to the visual probe 504 through a vibration structure.

[0079] When the cable roller 2 rotates to release the cable 3, so that the viewing component 5 is lowered along the borehole under the action of the counterweight 12, the rubber wheel 513 rolls along the borehole wall and drives the visual probe 504 to vibrate through the vibration structure.

[0080] In this embodiment, when the cable 3 is loosened by rotating the cable roller 2, the free end of the cable 3 is connected to the inspection component 5. Therefore, under the action of the counterweight 12 in the inspection component 5, the inspection component 5 is continuously lowered along the borehole as the cable 3 is loosened.

[0081] Furthermore, because the rubber wheel 513 is elastically pressed against the borehole wall, the rubber wheel 513 rotates continuously as the entire viewing assembly 5 is lowered, and ultimately drives the visual probe 504 to vibrate continuously through the vibration structure.

[0082] In this invention, the heat collection module 527 integrated on the visual probe 504 generates heat to evaporate the water vapor on the upper surface of the glass cover at the front end of the visual probe 504, thus preventing water vapor from accumulating and adhering to the glass cover at the front end of the visual probe 504 and affecting the imaging effect.

[0083] Meanwhile, the rubber wheel 513, which is set to elastically fit the borehole wall, rotates continuously during the lowering process. In conjunction with the vibration structure, it drives the visual probe 504 to vibrate rapidly, which can shake off any rock debris that occasionally falls into the borehole, further improving the imaging effect.

[0084] As a further embodiment of the present invention, the rear cover 501 is provided with a plurality of windows 5011, the plurality of windows 5011 being distributed at equal angles along the circumference of the rear cover 501, and mounting portions 5012 being integrally formed on both sides of the windows 5011.

[0085] The rubber wheel 513 is fixedly mounted on the first pin 514, the first pin 514 is detachably rotatably mounted on the top of the swing frame 511, and the second pin 517 is detachably rotatably mounted at the middle position of the swing frame 511, and the second pin 517 is rotatably connected to the mounting part 5012.

[0086] The lower end of the swing frame 511 is rotatably equipped with a pulley 512 via a detachable third pin, and the pulley 512 is connected to the front cover 502 through an elastic structure.

[0087] In this embodiment, the second pin 517 is rotatably connected to the mounting part 5012. Therefore, the rubber wheel 513 can be self-adjusted according to the size of the inner diameter of the drill hole by the elastic structure acting on the pulley 512, ensuring that the rubber wheel 513 always elastically and tightly adheres to the inner wall of the drill hole.

[0088] The purpose of setting up the elastic structure is twofold: firstly, to ensure that the rubber wheel 513 can adapt to boreholes of different diameters; and secondly, to increase the adhesion between the rubber wheel 513 and the borehole wall, ensuring that the rubber wheel 513 rolls in contact with the borehole wall without slipping. If the adhesion between the rubber wheel 513 and the borehole wall is insufficient, it is highly likely that the rubber wheel 513 will slide between itself and the borehole wall when the inspection component 5 is lowered, causing the rubber wheel 513 to stop rotating and ultimately resulting in the vibration structure failing to function properly.

[0089] As a further embodiment of the present invention, the front cover 502 includes a thick straight section and a thin straight section, and a step is formed between the thick straight section and the thin straight section; wherein, the thin straight section is disposed inside the rear cover 501, and a tray 510 is slidably sleeved on the thin straight section.

[0090] The elastic structure includes a push spring 509 that is pressed between the step and the tray 510, and the push spring 509 is sleeved on the outer periphery of the thin straight section; one end of the push spring 509 abuts against the step, and the other end abuts against the tray 510, and the pulley 512 rolls in contact with the upper surface of the tray 510.

[0091] In this embodiment, the push spring 509 provides an upward thrust to the tray 510, which in turn provides a push force to the pulley 512, so that the multiple rubber wheels 513 distributed circumferentially always have an outward elastic force; under the action of this outward force, the rubber wheels 513 pop out from the window 5011 and stick tightly to the inner wall of the borehole.

[0092] As a further embodiment of the present invention, the vibration structure includes a ring frame 520 fixedly installed in the rear cover 501, a rotating sleeve 523 rotatably disposed in the rear cover 501, and a vibration sleeve 524 connecting the rotating sleeve 523 and the visual probe 504.

[0093] When the rubber wheel 513 drives the first pin 514 to rotate, it can drive the rotating sleeve 523 to rotate; the vibrating sleeve 524 is elastically slidably sleeved on the upper part of the front cover 502, and the upper part of the vibrating sleeve 524 is slidably sleeved on the lower part of the rotating sleeve 523.

[0094] A first groove ring 5231 is formed on the lower inner wall of the rotating sleeve 523, and a second groove ring 5241 that matches the first groove ring 5231 is formed on the upper outer wall of the vibrating sleeve 524.

[0095] In this embodiment, during the lowering of the viewing component 5, the rotation of the rubber wheel 513 drives the first pin 514 to rotate, and the first pin 514 then drives the rotating sleeve 523 to rotate. The rotating sleeve 523, through the engagement of the first groove ring 5231 and the second groove ring 5241, drives the vibrating sleeve 524, which is elastically slidably sleeved on the front cover 502, to vibrate continuously, ultimately driving the visual probe 504 to vibrate continuously and shake off the adhering stone chips.

[0096] As a further embodiment of the present invention, a connecting post 525 is provided inside the front cover 502, and the upper part of the connecting post 525 is slidably fitted with the lower part of the vibration sleeve 524.

[0097] A flat key 5022 is formed on the inner wall of the thin straight section, and a keyway 5242 that slides and engages with the flat key 5022 is formed on the outer wall of the vibration sleeve 524.

[0098] The lower outer wall of the connecting column 525 has two rings of clamps, and a ring sleeve (not shown in the figure) is fixedly fitted between the two rings of clamps. The ring sleeve is connected to the inner wall of the front cover 502.

[0099] A vibration spring 526 is sleeved on the upper outer periphery of the connecting column 525. The lower end of the vibration spring 526 abuts against a ring of clamps located on the upper layer, and the upper end touches against the bottom edge of the vibration sleeve 524.

[0100] In this embodiment, the flat key 5022 and keyway 5242 are designed to prevent the vibrating sleeve 524 from rotating relative to the front cover 502. Therefore, when the rotating sleeve 523 rotates, the first groove ring 5231 and the second groove ring 5241 cooperate, and under the action of the vibrating spring 526, the vibrating sleeve 524 can only vibrate up and down continuously, eventually driving the visual probe 504 to vibrate.

[0101] As a further embodiment of the present invention, a hollow tube (not shown in the figure) is slidably inserted inside the connecting column 525. The upper end of the hollow tube is connected to the inner wall of the vibration sleeve 524, and the lower end of the hollow tube is connected to the visual probe 504.

[0102] The top end of the rotating sleeve 523 has a plurality of first recessed holes 5232 and the bottom end has a plurality of second recessed holes 5233; the top end of the front cover 502 has a ring-shaped recessed rail 5021 and the interior of the rear cover 501 has a recessed rail (not shown in the figure).

[0103] Each first recess 5232 and each second recess 5233 is equipped with rolling balls (not shown in the figure). The rolling balls in the first recess 5232 are in rolling engagement with the recessed rail inside the rear cover 501, and the rolling balls in the second recess 5233 are in rolling engagement with the annular recessed rail 5021.

[0104] In this embodiment, the rotational resistance of the rotating sleeve 523 is greatly reduced by the cooperation of the concave rail and the ball bearing in the concave hole. Moreover, the upper end of the rotating sleeve 523 is restrained by the rear cover 501, while the lower end of the rotating sleeve 523 is restrained by the top of the front cover 502. Therefore, the rotating sleeve 523 can only rotate in the rear cover 501.

[0105] The vibration of the vibrating sleeve 524 is transmitted to the visual probe 504 through the hollow tube.

[0106] As a further embodiment of the present invention, a large gear 515 is also fixedly installed on the first pin 514, wherein the circumferential radius of the large gear 515 is smaller than the radius of the rubber wheel 513.

[0107] A small gear 516 that meshes with the large gear 515 is fixedly installed on the second pin 517, and a first bevel gear 518 is also fixedly installed on the second pin 517.

[0108] The ring frame 520 is radially rotatably provided with a rotating shaft. One end of the rotating shaft is fixedly installed with a second bevel gear 519 that meshes with the first bevel gear 518, and the other end of the rotating shaft is fixedly installed with a third bevel gear 521. The outer wall of the rotating sleeve 523 is fixedly provided with a bevel gear ring 522 that meshes with the third bevel gear 521.

[0109] In this embodiment, when the rubber wheel 513 drives the first pin 514 to rotate, the first pin 514 drives the small gear 516 to rotate through the large gear 515, and then drives the first bevel gear 518 to rotate through the second pin 517; wherein, the first bevel gear 518 drives the second bevel gear 519, the rotating shaft, and the third bevel gear 521 to rotate, and finally drives the bevel gear ring 522 and the rotating sleeve 523 to rotate;

[0110] It should be noted that in this invention, since the multiple circumferential rubber wheels 513 are all engaged with the bevel gear ring 522, the three rubber wheels 513 rotate synchronously, which can ensure that the inspection component 5 descends at a constant speed in the circumferential direction, and basically prevents the inspection component 5 from tilting in the borehole.

[0111] Moreover, by providing power through multiple rubber wheels 513, the driving force is effectively distributed from all directions around the circumference, and there is no problem of stress concentration in one direction.

[0112] As a further embodiment of the present invention, a deflectable swing arm 8 is provided on one side of the frame structure 1, one end of the swing arm 8 is rotatably connected to the frame structure 1, and the other end is rotatably provided with a roller 10.

[0113] A cylinder 9 is also provided between the swing arm 8 and the frame structure 1. One end of the cylinder 9 is rotatably connected to the frame structure 1, and the other end is rotatably connected to the swing arm 8.

[0114] An installation beam 11 is installed on the frame structure 1, and an elastic guide 4 is provided on the installation beam 11. A visualization image screen 6 that communicates with the cable 3 is installed on the top of the frame structure 1. A cable retraction motor 7 installed on the frame structure 1 is connected to one side of the cable roller 2.

[0115] In this embodiment, the cable roller 2 is rotated by the cable retraction motor 7 to retract and release the cable 3. After the cable 3 is released from the cable roller 2, it passes through the elastic guide 4 and the idler roller 10 and is then vertically lowered into the borehole to lower the inspection component 5.

[0116] As a further embodiment of the present invention, the elastic guide 4 includes a collapsible main frame 401, a front guide roller 403 rotatably disposed on one side of the collapsible main frame 401, a rear guide roller 408 rotatably disposed on the other side of the collapsible main frame 401, and a steering guide roller 407 disposed between the front guide roller 403 and the rear guide roller 408.

[0117] The collapsible main frame 401 adopts a deformable cross metal frame, and a collapse spring 404 is provided on the cross metal frame. The top of the collapsible main frame 401 is connected to the mounting beam 11 through the top plate 402.

[0118] A rotating frame 406 is rotatably mounted on the base plate 405 of the collapsible main frame 401, and the steering guide roller 407 is rotatably mounted on the rotating frame 406.

[0119] In this embodiment, the collapsible main frame 401 and the collapsible spring 404 can buffer and dampen the cable 3 as it passes through the guide roller when the viewing component 5 is lowered. Moreover, the cable 3 will wobble during the process of being released from the cable roller 2. The steerable guide roller 407 is used to accommodate the wobble of the cable 3 and reduce the sliding friction of the cable 3 on the guide roller.

[0120] Note that the top of the insert 503 has an external threaded sleeve 506, on which a limiting disc 507 is fitted, and a locking nut 508 is threadedly connected. After the free end of the cable 3 passes through the external threaded sleeve 506 and enters the insert 503, the free end of the cable 3 can be locked by screwing in the locking nut 508. At this time, the limiting disc 507 can prevent the counterweight 12 fitted on the insert 503 from coming off the insert 503.

[0121] In addition, the present invention also proposes a method for detecting downhole boreholes using the low-carbon mining downhole visual detection device described above, comprising the following steps:

[0122] Step 1, cable 3 connection and communication test: insert one end of cable 3 into the inside of cable roller 2 along the radial direction of cable roller 2, and then pass it out from the end of cable roller 2 away from the cable retraction motor 7. Connect the signal line using the brush and turn on the visualization image screen 6.

[0123] Then connect the free end of cable 3 to the visual probe 504 via spring wire 505, power on the visual image screen 6 and the visual probe 504, and check whether the image signal transmission is smooth.

[0124] Step 2: Adjust the swing arm 8 by using cylinder 9 to align the inspection component 5 with the borehole, and then start the cable reel motor 7 in the forward direction to release the cable roller 2 and insert the inspection component 5 into the borehole.

[0125] Step 3: Fixed-depth image acquisition. The cable is laid down at a predetermined depth gradient and stable image information is acquired at that depth position. The image is then transmitted to the visualization image screen 6 and stored.

[0126] Step four involves comparing and analyzing the images acquired at each depth gradient, including the degree of development of macroscopic crisscrossing fractures in the borehole wall rock, the number of fractures, the width of fractures, and the location of fractures, in order to evaluate the deep-hole blasting effect.

[0127] The above embodiments are exemplary and not restrictive. Therefore, any technical solutions that can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention are included within the scope of the present invention.

Claims

1. A low-carbon mining downhole borehole visual detection device, comprising a frame structure (1), a cable roller (2) rotatably mounted on the frame structure (1), a cable (3) wound on the cable roller (2), and a detection component (5) connected to the free end of the cable (3), characterized in that: The viewing assembly (5) includes a rear cover (501) and a front cover (502) connected by threads. A sleeve (503) is formed at the end of the rear cover (501) away from the front cover (502). The top end of the sleeve (503) is fixed to the free end of the cable (3). A counterweight (12) is detachably provided on the sleeve (503). A visual probe (504) is movably installed inside the front cover (502) and connected to the free end of the cable (3) via a spring wire (505). A heat collection module (527) is integrated on the visual probe (504). Multiple rubber wheels (513) for elastically fitting with the borehole wall are arranged at equal angles along the circumference of the rear cover (501). The rubber wheels (513) are connected to the visual probe (504) through a vibration structure. When the cable roller (2) rotates to release the cable (3), so that the viewing assembly (5) is lowered along the borehole under the action of the counterweight (12), the rubber wheel (513) rolls along the borehole wall and drives the visual probe (504) to vibrate through the vibration structure; The rubber wheel (513) is fixedly mounted on the first pin (514), the first pin (514) is detachably rotatably mounted on the top of the swing frame (511), and the second pin (517) is detachably rotatably mounted at the middle position of the swing frame (511), and the second pin (517) is rotatably connected to the mounting part (5012). The lower end of the swing frame (511) is rotatably equipped with a pulley (512) via a detachable third pin, and the pulley (512) is connected to the front cover (502) through an elastic structure. The front cover (502) includes a thick straight section and a thin straight section, with a step formed between the thick straight section and the thin straight section; wherein, the thin straight section is disposed inside the rear cover (501), and a tray (510) is slidably sleeved on the thin straight section. The elastic structure includes a push spring (509) that is pressed between the step and the tray (510), and the push spring (509) is sleeved on the outer periphery of the thin straight section; one end of the push spring (509) abuts against the step, and the other end abuts against the tray (510); the pulley (512) rolls in contact with the upper surface of the tray (510). The vibration structure includes a ring frame (520) fixedly installed in the rear cover (501), a rotating sleeve (523) rotatably installed in the rear cover (501), and a vibration sleeve (524) connecting the rotating sleeve (523) and the visual probe (504). When the rubber wheel (513) drives the first pin (514) to rotate, it can drive the rotating sleeve (523) to rotate; the vibrating sleeve (524) is elastically slidably sleeved on the upper part of the front cover (502), and the upper part of the vibrating sleeve (524) is slidably sleeved on the lower part of the rotating sleeve (523); A first groove ring (5231) is formed on the lower inner wall of the rotating sleeve (523), and a second groove ring (5241) that matches the first groove ring (5231) is formed on the upper outer wall of the vibrating sleeve (524).

2. The downhole borehole visual detection device for low-carbon mining according to claim 1, characterized in that, The rear cover (501) is provided with a plurality of windows (5011), which are distributed at equal angles along the circumference of the rear cover (501). Mounting parts (5012) are integrally formed on both sides of the windows (5011).

3. The downhole borehole visual detection device for low-carbon mining according to claim 1, characterized in that, The front cover (502) is provided with a connecting post (525) inside, and the upper part of the connecting post (525) is slidably fitted with the lower part of the vibration sleeve (524); A flat key (5022) is formed on the inner wall of the thin straight section, and a keyway (5242) is formed on the outer wall of the vibrating sleeve (524) to slide and fit with the flat key (5022). The lower outer wall of the connecting column (525) has two rings of clamps, and a ring is fixedly fitted between the two rings of clamps. The ring is connected to the inner wall of the front cover (502). A vibration spring (526) is sleeved on the upper outer periphery of the connecting column (525). The lower end of the vibration spring (526) abuts against a ring of clamps located on the upper layer, and the upper end touches against the bottom edge of the vibration sleeve (524).

4. The downhole borehole visual detection device for low-carbon mining according to claim 3, characterized in that, A hollow tube is slidably inserted inside the connecting column (525). The upper end of the hollow tube is connected to the inner wall of the vibration sleeve (524), and the lower end of the hollow tube is connected to the visual probe (504). The top end of the rotating sleeve (523) has a plurality of first recesses (5232), and the bottom end has a plurality of second recesses (5233); the top end of the front cover (502) has a ring-shaped recessed rail (5021), and the interior of the rear cover (501) has a recessed rail. Each first recess (5232) and each second recess (5233) is equipped with rolling balls. The rolling balls in the first recess (5232) roll with the recessed rail inside the rear cover (501), and the rolling balls in the second recess (5233) roll with the annular recessed rail (5021).

5. The downhole borehole visual detection device for low-carbon mining according to claim 1, characterized in that, A large gear (515) is also fixedly installed on the first pin (514), wherein the circumferential radius of the large gear (515) is smaller than the radius of the rubber wheel (513); A small gear (516) that meshes with the large gear (515) is fixedly installed on the second pin (517), and a first bevel gear (518) is also fixedly installed on the second pin (517). The ring frame (520) is radially rotatably provided with a rotating shaft. One end of the rotating shaft is fixedly installed with a second bevel gear (519) that meshes with the first bevel gear (518), and the other end of the rotating shaft is fixedly installed with a third bevel gear (521). The outer wall of the rotating sleeve (523) is fixedly provided with a bevel gear ring (522) that meshes with the third bevel gear (521).

6. The downhole borehole visual detection device for low-carbon mining according to claim 1, characterized in that, A deflectable swing arm (8) is provided on one side of the frame structure (1). One end of the swing arm (8) is rotatably connected to the frame structure (1), and the other end is rotatably provided with a roller (10). A cylinder (9) is also provided between the swing arm (8) and the frame structure (1). One end of the cylinder (9) is rotatably connected to the frame structure (1), and the other end is rotatably connected to the swing arm (8). An installation beam (11) is installed on the frame structure (1), and an elastic guide (4) is provided on the installation beam (11). A visualization image screen (6) communicating with the cable (3) is installed on the top of the frame structure (1). One side of the cable roller (2) is connected to a cable winding and unwinding motor (7) installed on the frame structure (1).

7. The downhole borehole visual detection device for low-carbon mining according to claim 6, characterized in that, The elastic guide (4) includes a collapsible main frame (401), a front guide roller (403) rotatably disposed on one side of the collapsible main frame (401), a rear guide roller (408) rotatably disposed on the other side of the collapsible main frame (401), and a steering guide roller (407) disposed between the front guide roller (403) and the rear guide roller (408). The collapsible main frame (401) adopts a deformable cross metal frame, and a collapsible spring (404) is provided on the cross metal frame. The top of the collapsible main frame (401) is connected to the mounting beam (11) through the top plate (402). A rotating frame (406) is rotatably mounted on the base plate (405) of the collapsible main frame (401), and the steering guide roller (407) is rotatably mounted on the rotating frame (406).

8. A method for detecting downhole boreholes using a low-carbon mining downhole visual detection device as described in any one of claims 1-7, characterized in that, Includes the following steps: Step 1, cable (3) connection and communication test: insert one end of cable (3) into the inside of cable roller (2) along the radial direction of cable roller (2), and pass it out from the end of cable roller (2) away from the cable reel motor (7). Connect the signal line with the brush and turn on the visualization image screen (6). Then connect the free end of the cable (3) to the visual probe (504) through the spring wire (505), turn on the visual image screen (6) and the visual probe (504) to check whether the image signal transmission is smooth; Step 2: Adjust the swing arm (8) by using the cylinder (9) to make the inspection component (5) aligned with the borehole, and then start the cable winding motor (7) in the forward direction to make the cable roller (2) release the cable and put the inspection component (5) into the borehole. Step 3: Fixed-depth image acquisition. The cable is laid down at a certain depth according to the predetermined depth gradient, and stable image information is acquired at that depth position. The image is transmitted to the visualization image screen (6) and stored. Step four involves comparing and analyzing the images acquired at each depth gradient, including the degree of development of macroscopic crisscrossing fractures in the borehole wall rock, the number of fractures, the width of fractures, and the location of fractures, in order to evaluate the deep-hole blasting effect.

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