A device and method for visualizing cracks in dangerous rock exploration holes

Abstract

The present invention discloses a device and method for visualizing cracks in a dangerous rock exploration hole, wherein the device is provided with a guide main seat, a guide head seat, and a peripheral limit plate, wherein at least a portion of the outer wall of the guide head seat is smoothly connected to the guide main seat and forms a smooth portion, and the side of the guide main seat away from the smooth portion exceeds the outer wall of the guide head seat and forms a supporting protrusion, and an expansion drive is provided in the guide head seat, and the expansion drive pushes the peripheral limit plate outward along the radial direction of the guide head seat so that the peripheral limit plate abuts against the inner wall of the exploration hole. In the present invention, when encountering a crack, the guide head seat first enters the hole section behind the crack, and forms a support effect on the entire front end structure with the hole section behind the crack as the base surface through the peripheral limit plate, and the entire front end structure is rotated to make the supporting protrusion away from the hole wall at the crack, and the guide main seat is pushed to smoothly pass through the crack with the smooth portion as the sliding surface to enter the hole section behind the crack, so as to avoid the crack blocking the structure from moving forward to conduct the survey work.

Description

Technical Field

[0001] The invention relates to a detection structure of a dangerous rock exploration hole, and in particular to a device and method for visualizing cracks in a dangerous rock exploration hole. Background Art

[0002] Dangerous rock bodies often exist in mountainous areas such as peak cluster geomorphic units, and there is a risk of landslides and local collapses that may cause geological disasters. The formation of dangerous rock bodies is mainly affected by the combined effects of topography, lithology, joints and structural fissures. The cracks developed in dangerous rocks mainly include layer cracks, structural cracks and unloading cracks. Among them, unloading cracks are developed on the basis of structural cracks under the action of their own gravity. Through engineering geological surveying, drilling and trenching, it is found that the direction of the unloading crack zone is basically consistent with that of the dangerous rock zone, which plays a decisive role in the stability of the entire dangerous rock zone.

[0003] In order to study the stability of dangerous rock masses, it is necessary to collect, calculate and analyze data such as the fracture parameters and boundary conditions of the dangerous rock masses. In the process of dangerous rock exploration, pipeline detectors are usually used to conduct precise exploration in-depth into the exploration hole. The existing pipeline detectors include push rod cables. The front end of the push rod cable is equipped with an infinitely rotatable stainless steel camera, an electronic ruler and an LED light. It can take pictures and record videos in a dark environment in the hole, and measure the width of the fractures in the hole and the distance from the hole mouth.

[0004] However, existing pipeline detectors have certain difficulties in detecting cracks in near-horizontal exploration holes. The main reasons are:

[0005] When the crack in the exploration hole is wide, the front-end camera structure is prone to fall into the crack under the action of gravity, and it is impossible to continue to go deeper and survey the detailed data of the crack;

[0006] When cracks in the exploration hole cause positional offsets between hole sections, the protruding hole wall at the offset prevents the camera assembly from going deeper, limiting the exploration work. Summary of the invention

[0007] To this end, the present invention provides a device and method for visualizing cracks in dangerous rock exploration holes, which effectively solves the problems in the prior art that the front-end structure of the pipeline detector is prone to fall into the cracks when the cracks in the exploration hole are wide, and when the cracks in the exploration hole cause position offsets between hole sections, the protruding hole wall blocks the camera assembly from continuing to go deeper, resulting in high difficulty in exploring cracks in exploration holes in a nearly horizontal direction.

[0008] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: a device for visualizing cracks in dangerous rock exploration holes, comprising:

[0009] A guide main seat, with a guide head seat installed at its end, the guide main seat and the guide head seat are both arranged along the length direction of the exploration hole, at least part of the outer wall of the guide head seat is smoothly connected to the guide main seat and forms a smooth portion, the side of the guide main seat away from the smooth portion exceeds the outer wall of the guide head seat and forms a supporting protrusion, the front end of the guide head seat is equipped with a gimbal camera, and the inner end of the gimbal camera is connected to a push rod cable;

[0010] A peripheral limit plate is arranged on the side of the guide head seat, and the peripheral limit plate is provided in a plurality of pieces. The end of the peripheral limit plate is hinged to the side of the guide head seat. An expansion drive member is arranged in the guide head seat, and the expansion drive member pushes the peripheral limit plate outward along the radial direction of the guide head seat so that the peripheral limit plate abuts against the inner wall of the exploration hole;

[0011] A cable sleeve is installed at the end of the guide main seat away from the guide head seat. The cable sleeve is arranged outside the push rod cable. A rotating joint is arranged between the cable sleeve and the guide main seat. The rotating joint drives the guide main seat to rotate, so as to drive the supporting protrusion away from the bottom of the exploration hole and the smooth part close to the bottom of the exploration hole.

[0012] Further,

[0013] The central axis position of the guide head seat deviates from the central axis position of the guide main seat, and the center of gravity of the guide head seat and the guide main seat as a whole is located below the guide head seat;

[0014] The included angle between the peripheral limit plate and the guide head seat is 0° to 90°, and the peripheral limit plate is located at a hinged portion of the outer wall of the guide head seat away from the guide main seat.

[0015] Further,

[0016] The guide main seat comprises a main cylinder and a bottom support cylinder installed on the side of the main cylinder;

[0017] The main tube and the bottom support tube are symmetrical up and down, the outer wall between the main tube and the bottom support tube is formed as a linear wall body, the central axis of the main tube and the guide head seat coincide, and the connection surface of the central axis of the main tube and the bottom support tube is parallel to the linear wall body;

[0018] Wherein, a cavity is formed in the main tube and the bottom support tube for the push rod cable to pass through.

[0019] Further,

[0020] A side wall groove is provided on the side of the guide head seat, the peripheral limit plate is clamped in the side wall groove, the length of the peripheral limit plate is less than the length of the side wall groove, a connecting shaft is provided in the side wall groove, the end of the peripheral limit plate is rotatably mounted on the connecting shaft, a torsion spring is provided on the connecting shaft, one end of the torsion spring is connected to the peripheral limit plate, and the other end is connected to the connecting shaft;

[0021] The thickness of the peripheral limiting plate is the same as the thickness of the side wall groove.

[0022] Further,

[0023] The guide head seat comprises a connecting seat arranged on the guide main seat and a mounting seat arranged on the connecting seat;

[0024] The side wall groove is arranged on the side wall of the connecting seat;

[0025] The end of the connection seat is provided with a first mounting groove, the end of the mounting seat is movably arranged in the first mounting groove, the outer wall of the mounting seat is provided with an annular groove, the side wall of the connection seat is slidably arranged in the annular groove,

[0026] The gimbal camera is mounted on the mounting seat, a first through slot is formed on the connecting seat along the central axis direction, a second through slot is formed on the mounting seat along the central axis direction, and the push rod cable passes through the first through slot and the second through slot.

[0027] Further,

[0028] The expansion drive member includes an inclined guide column installed on one side of the mounting seat close to the connecting seat, and a sliding seat slidably arranged in the first mounting groove;

[0029] An oblique groove is provided in the slide seat, the oblique guide column is slidably arranged in the oblique groove, a second mounting groove is provided on the side of the slide seat, a push column is installed in the second mounting groove, one end of the push column is connected to the inside of the mounting groove through a mounting spring, and the other end abuts against the inner side of the peripheral limit plate;

[0030] The push post is located near the hinged end of the peripheral limiting plate at the abutment portion of the peripheral limiting plate.

[0031] Further,

[0032] A tension spring is disposed on one side of the mounting seat close to the connecting seat, and the radius of the tension spring is greater than the radius of the first through-groove and the second through-groove;

[0033] The push rod cable passes through the tension spring.

[0034] Further,

[0035] The rotary joint comprises a connector connected to the end of the cable sleeve and a rotary seat connected to the connector;

[0036] The end of the guide main seat is rotatably mounted on the rotating seat, a gear groove and an outer arc groove are formed in the rotating seat, the gear groove and the outer arc groove are connected, a rotating gear is arranged in the gear groove, the guide main seat is connected to the rotating gear, a driving wheel is arranged in the outer arc groove, a micro motor is externally connected to the driving wheel, the driving wheel passes between the gear groove and the outer arc groove, and meshes with the rotating gear;

[0037] The diameter of the top opening of the gear groove is smaller than the diameter of the inner bottom, so as to limit the rotating gear in the gear groove.

[0038] Further,

[0039] A winding frame is provided at the end of the push rod cable, and the winding frame winds and stores the push rod cable.

[0040] In order to solve the above technical problems, the present invention further provides the following technical solutions: a method for visualizing cracks in dangerous rock exploration holes, comprising the following steps:

[0041] Push the front end of the device deeper into the exploration hole, and apply thrust to make the front end of the device continue to penetrate deeper into the exploration hole;

[0042] Keep the supporting protrusion in contact with the hole so that the guide head seat can move at a certain height in the hole;

[0043] Observe the real-time image in the hole, collect the crack parameters based on the crack detection, and continue the activity so that the guide head seat first enters the hole section behind the crack;

[0044] The guide head seat is limited on the hole wall of the hole section behind the crack, so that the hole section behind the crack is used as the basic surface to form a support effect on the entire front end structure;

[0045] By rotating the entire front end structure to make the supporting protrusion away from the bottom of the hole wall, the push rod cable can push the guide main seat to pass through the crack with the smooth part as the sliding surface and enter the hole section behind the crack, and then continue to conduct in-depth exploration work.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] In the present invention, the guide main seat and the guide head seat cooperate with the guide universal camera to carry out in-depth exploration work inside the hole, wherein the guide head seat is operated at a certain height position in the hole by the supporting effect of the supporting protrusion in the hole, and when encountering a crack, the guide head seat does not contact the hole wall and first enters the hole section behind the crack, and the guide head seat is limited on the hole wall of the hole section behind the crack by the peripheral limit plate, so that the hole section behind the crack is used as the basic surface to form a supporting effect on the entire front-end structure, and at the same time, by rotating the entire front-end structure, the supporting protrusion between the guide head seat and the guide main seat is away from the hole wall that protrudes at the crack and blocks the front-end structure from moving forward, and the pushing rod cable can push the guide main seat to smoothly pass through the crack and enter the hole section behind the crack with the smooth part as the sliding surface, thereby avoiding the crack blocking the structure from moving forward for surveying. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0049] Figure 1 A schematic diagram of the structure of a device for visualizing cracks in a dangerous rock exploration hole provided by an embodiment of the present invention;

[0050] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0051] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure along the middle BB direction;

[0052] Figure 4 is a schematic structural diagram of a guide head seat in an embodiment of the present invention;

[0053] Figure 5 for Figure 4 A is a schematic diagram of the enlarged structure of the middle part;

[0054] Figure 6 for Figure 1 Schematic diagram of the enlarged structure of B;

[0055] Figure 7 Schematic diagram of the structure of the rotating seat in the embodiment of the present invention;

[0056] Figure 8 It is a schematic structural diagram of one side wall of the guide main seat in an embodiment of the present invention;

[0057] Fig. 9This is a schematic diagram of the structure of the guide head seat moving to the hole section behind the crack;

[0058] Fig.10 It is a structural schematic diagram of the front end structure rotating as a whole and driving the peripheral limit plate to expand outward and abut against the hole wall;

[0059] Fig.11 for Fig.10 Schematic diagram of the enlarged structure of C in the middle;

[0060] Fig.12 Schematic diagram of the structure of the winding frame in the embodiment of the present invention.

[0061] The numbers in the figure represent the following:

[0062] 1-guide main seat; 2-guide head seat; 3-circumferential limit plate; 4-exploration hole; 5-smooth part; 6-support protrusion; 7-universal camera; 8-push rod cable; 9-expansion drive member; 10-cable sleeve; 11-rotating joint; 12-side wall groove; 13-connecting shaft; 14-winding frame; 15-hole section before the crack; 16-hole section after the crack; 17-arc groove; 18-slider;

[0063] 101-main tube; 102-support tube; 103-linear wall; 104-cavity;

[0064] 21-connecting seat; 22-mounting seat; 23-first mounting groove; 24-ring groove; 25-first through groove; 26-second through groove;

[0065] 91- oblique guide column; 92- slide seat; 93- oblique groove; 94- second mounting groove; 95- push column; 96- mounting spring;

[0066] 111-connector; 112-rotating seat; 113-gear groove; 114-outer arc groove; 115-rotating gear; 116-driving wheel. DETAILED DESCRIPTION

[0067] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0068] like Figure 1 As shown, the present invention provides a device for visualizing cracks in dangerous rock exploration holes, which comprises structures such as a guide main seat 1, a guide head seat 2, and a peripheral limit plate 3.

[0069] A guide head seat 2 is installed at the end of the guide main seat 1, and the guide main seat 1 and the guide head seat 2 together constitute a front end guide structure.

[0070] The guide main seat 1 and the guide head seat 2 are both arranged along the length direction of the exploration hole 4. The outer wall of the guide head seat 2 is at least partially smoothly connected to the guide main seat 1 to form a smooth portion 5. The side of the guide main seat 1 away from the smooth portion 5 exceeds the outer wall of the guide head seat 2 to form a supporting protrusion 6. The setting of the supporting protrusion 6 can make the guide head seat 2 rise to a certain height without contacting the hole wall, and is also to prepare for entering the next hole section 16 after the crack.

[0071] A universal camera 7 is mounted at the front end of the guide head seat 2, and a push rod cable 8 is connected to the inner end of the universal camera 7. The universal camera 7 can rotate freely to obtain images at different positions in the exploration hole 4, such as Fig.12 As shown, a winding frame 14 is provided at the end of the push rod cable 8, and the winding frame 14 winds and stores the push rod cable 8.

[0072] The peripheral limit plate 3 is arranged on the side of the guide head seat 2. There are several peripheral limit plates 3. The end of the peripheral limit plate 3 is hinged on the side of the guide head seat 2. An expansion drive member 9 is arranged in the guide head seat 2. The expansion drive member 9 pushes the peripheral limit plate 3 outward along the radial direction of the guide head seat 2 so that the peripheral limit plate 3 abuts against the inner wall of the exploration hole 4. The abutment position of the peripheral limit plate 3 is mainly on the hole wall of the hole section after the crack, so as to prevent the guide head seat 2 from returning to the previous hole section 15 of the crack under the traction of the guide main seat 1.

[0073] A cable sleeve 10 is installed at the end of the guide main seat 1 away from the guide head seat 2. The cable sleeve 10 is sleeved on the outside of the push rod cable 8. A rotating joint 11 is arranged between the cable sleeve 10 and the guide main seat 1. The rotating joint 11 drives the guide main seat 1 to rotate, so as to drive the supporting protrusion 6 away from the inner bottom of the exploration hole 4 and the smooth part 5 close to the inner bottom of the exploration hole 4.

[0074] In the present invention, the guide main seat 1 and the guide head seat 2 cooperate with the guide universal camera 7 to carry out in-depth exploration work inside the exploration hole 4, wherein the guide head seat 2 is allowed to run at a certain height position in the hole through the supporting effect of the supporting protrusion 6 in the hole, and when encountering a crack, the guide head seat 2 does not contact the hole wall and first enters the hole section 16 behind the crack, and the guide head seat 2 is limited on the hole wall of the hole section 16 behind the crack by the peripheral limiting plate 3, so that the hole section 16 behind the crack is used as the basic surface to form a supporting effect on the entire front-end structure, and at the same time, by rotating the entire front-end structure, the supporting protrusion 6 between the guide head seat 2 and the guide main seat 1 is away from the hole wall that protrudes at the crack and blocks the front-end structure from moving forward, and the push rod cable 8 can push the guide main seat 1 to smoothly pass through the crack and enter the hole section 16 behind the crack with the smooth portion 5 as the sliding surface, thereby avoiding the crack blocking the structure from moving forward to survey.

[0075] In the present invention, in order to ensure that the guide head seat 2 is maintained at a certain height position in the hole, it is necessary to make the central axis position of the guide head seat 2 deviate from the central axis position of the guide main seat 1, and the center of gravity axis position of the guide head seat 2 is located above the central axis position of the guide main seat 1 during normal forward movement. In addition, the center of gravity of the guide head seat 2 and the guide main seat 1 as a whole is located below the guide head seat 2, the weight of the guide head seat 2 itself is less than the weight of the guide main seat 1, and the weight of the upper part of the guide head seat 2 and the guide main seat 1 is much less than the weight of the lower part of the guide main seat 1. In this way, the center of gravity can be lowered, and the guide head seat 2 can be kept on top during movement, thereby ensuring the stability of the front end structure during movement.

[0076] The peripheral limit plate 3 can ensure the limitation of the guide head seat 2 on the hole section 16 after the crack. The angle between the peripheral limit plate 3 and the guide head seat 2 is 0°~90°, and the peripheral limit plate 3 is located at the hinge of the outer wall of the guide head seat 2 on the side away from the guide main seat 1. When the front end structure has a tendency to move toward the hole section 15 before the crack, the peripheral limit plate 3 needs to rotate to the side away from the guide head seat 2, and the inner wall of the hole section 16 after the crack will prevent the above-mentioned directional rotation movement of the peripheral limit plate 3, thereby realizing the limiting effect.

[0077] In the present invention, Figure 2 and Figure 3 As shown, the guide main seat 1 includes a main cylinder 101 and a bottom support cylinder 102 installed on the side of the main cylinder 101; the main cylinder 101 and the bottom support cylinder 102 are symmetrical up and down, and the main cylinder 101 and the bottom support cylinder 102 are set to have a circular arc shape with the same appearance, and the outer wall between the main cylinder 101 and the bottom support cylinder 102 is formed as a linear wall body 103, the central axes of the main cylinder 101 and the guide head seat 2 coincide, and the connecting surface of the central axes of the main cylinder 101 and the bottom support cylinder 102 is parallel to the linear wall body 103.

[0078] A cavity 104 for the push rod cable 8 to pass through is formed in the main tube 101 and the bottom support tube 102 . The cavity 104 extends from the main tube 101 to the bottom support tube 102 . The size of the cavity 104 is much larger than the diameter of the push rod cable 8 .

[0079] In the above embodiment, the position of the inlet end of the push rod cable 8 in the cavity 104 remains unchanged, so as to realize the subsequent driving of the expansion drive member 9. To achieve the above purpose, Figure 8As shown, it is necessary to keep the outlet end position of the push rod cable 8 on the rotary joint 11 unchanged, and an arc groove is opened on the side of the guide main seat 1 close to the rotary joint 11, and the arc groove 17 takes the axis driven by the rotary joint 11 to drive the guide main seat 1 to rotate as the central axis. During the rotation of the guide main seat 1, the push rod cable 8 moves relative to the arc groove 17 at the inlet end of the guide main seat 1 (moves in the arc groove 17), but the inlet end itself will not rotate with the guide main seat 1, and its outlet end will rotate with the guide main seat 1. During the rotation, the cable length between the inlet end and the outlet end becomes longer, thereby achieving the pulling of the push rod cable 8 at the outlet end.

[0080] In order to install the peripheral limit plate 3, a side wall groove 12 is opened on the side of the guide head seat 2, and the peripheral limit plate 3 is clamped in the side wall groove 12. The length of the peripheral limit plate 3 is less than the length of the side wall groove 12. A connecting shaft 13 is arranged in the side wall groove 12. The end of the peripheral limit plate 3 is rotatably installed on the connecting shaft 13. A torsion spring is arranged on the connecting shaft 13. One end of the torsion spring is connected to the peripheral limit plate 3, and the other end is connected to the connecting shaft 13. The thickness of the peripheral limit plate 3 is the same as the thickness of the side wall groove 12.

[0081] During the movement of the peripheral limiting plate 3 , the peripheral limiting plate 3 is also subject to resistance from the torsion spring that prevents the peripheral limiting plate 3 from rotating outwards. This resistance can drive the peripheral limiting plate 3 to return to the side wall groove 12 under certain circumstances.

[0082] In order to realize the outward expansion of the peripheral limit plate 3, the guide head seat 2 in the present invention adopts the following preferred embodiments, such as Figure 4 As shown, the guide head seat 2 includes a connecting seat 21 arranged on the guide main seat 1, a mounting seat 22 arranged on the connecting seat 21, and a side wall groove 12 is arranged on the side wall of the connecting seat 21.

[0083] A first mounting groove 23 is formed at the end of the connecting seat 21 , and the end of the mounting seat 22 is movably arranged in the first mounting groove 23 . An annular groove 24 is formed on the outer wall of the mounting seat 22 , and the side wall of the connecting seat 21 is slidably arranged in the annular groove 24 .

[0084] The gimbal camera 7 is mounted on the mounting seat 22 . A first through groove 25 is formed on the connecting seat 21 along the central axis direction. A second through groove 26 is formed on the mounting seat 22 along the central axis direction. The push rod cable 8 penetrates the first through groove 25 and the second through groove 26 .

[0085] When the outlet end in the guide main seat 1 is pulled, the end of the push rod cable 8 pulls the mounting seat 22 to move close to the connecting seat 21 , and the end of the mounting seat 22 moves in the first mounting groove 23 .

[0086] In order to make the mounting seat 22 close to the connecting seat 21, the peripheral limit plate 3 is driven to expand outward, the expansion drive member 9 in the present invention adopts the following preferred embodiments, such as Figure 5As shown, the expansion drive member 9 includes an inclined guide column 91 installed on the side of the mounting seat 22 close to the connecting seat 21, and a sliding seat 92 slidably arranged in the first mounting groove 91;

[0087] An oblique groove 93 is provided in the slide 92, and the oblique guide column 91 is slidably arranged in the oblique groove 93. A second mounting groove 94 is provided on the side of the slide 92, and a push column 95 is installed in the second mounting groove 94. One end of the push column 95 is connected to the inside of the mounting groove 94 through a mounting spring 96, and the other end abuts against the inner side of the peripheral limit plate 3.

[0088] The push post 95 is located near the hinged end of the peripheral limiting plate 3 at the abutment portion of the peripheral limiting plate 3 .

[0089] A tension spring 97 is disposed on one side of the mounting seat 22 close to the connecting seat 21 . The radius of the tension spring 97 is greater than the radius of the first through-groove 25 and the second through-groove 26 . The push rod cable 8 passes through the tension spring 97 .

[0090] The mounting seat 22 gradually approaches the connecting seat 21, and moves in the first mounting groove 91, driving the inclined guide column 91 to approach the connecting seat 21. In the process of moving downward, the sliding seat 92 is driven to move outward toward both sides, thereby driving the push column 95 to gradually push the peripheral limit plate 3 outward.

[0091] Here, the resistance generated by the torsion spring on the peripheral limit plate 3 is smaller than the thrust generated by the push column 95. When the peripheral limit plate 3 rotates to abut against the hole wall, it stops rotating. At this time, it is possible that the guide main seat 1 has not stopped rotating, that is, the push rod cable 8 is still being pulled, the mounting seat 22 is still gradually approaching the connecting seat 21, the sliding seat 92 continues to move outward, and the peripheral limit plate 3 can no longer rotate outward. Under the reverse support force of the peripheral limit plate 3, the push column 95 no longer moves outward. In this process, the mounting spring 96 is gradually squeezed, and the force of the peripheral limit plate 3 abutting against the hole wall becomes larger and larger, thereby optimizing the limiting effect.

[0092] In order to limit the movement direction of the slide 92, a slider 18 can also be set between the bottom of the slide 92 and the first installation groove 23. A corresponding slide groove is opened on the groove surface of the first installation groove 23, so that the slide 92 can move along the groove surface of the first installation groove 23.

[0093] The rotary joint 11 of the present invention adopts the following preferred embodiments: Figure 6 and Figure 7 As shown, the rotary joint 11 includes a connector 111 connected to the end of the cable sleeve 10 and a rotary seat 112 connected to the connector;

[0094] The end of the guide main seat 1 is rotatably installed on the rotating seat 112, and a gear groove 113 and an outer arc groove 114 are formed in the rotating seat 112. The gear groove 113 and the outer arc groove 114 are connected. A rotating gear 115 is arranged in the gear groove 113, and the guide main seat 1 is connected to the rotating gear 115. A driving wheel 116 is arranged in the outer arc groove 114, and the driving wheel 116 is externally connected to a micro motor. The driving wheel 116 passes between the gear groove 113 and the outer arc groove 114 and meshes with the rotating gear 115.

[0095] The diameter of the top opening of the gear slot 113 is smaller than the inner bottom diameter, so as to limit the rotating gear 115 in the gear slot 113 .

[0096] The micro motor drives the driving wheel 116 to rotate, thereby driving the rotating gear 115 to rotate, and the rotating gear 115 drives the guide main seat 1 to rotate relative to the rotating seat 112.

[0097] In summary, when the front-end structure encounters cracks, the main operating steps are:

[0098] like Fig. 9 As shown, the guide head seat 2 first enters the hole section 16 behind the crack, so that the position between the guide main seat 1 and the guide head seat 2 is close to the crack;

[0099] like Fig.10 As shown, the micro motor drives the rotating gear 115 to rotate, and the rotating gear 115 drives the guide main seat 1 to rotate relative to the rotating seat 112, and the guide head seat 2 rotates from the top to the bottom. During the rotation process, the front end structure is gradually raised;

[0100] At the same time, during the rotation of the guide main seat 1, the push rod cable 8 moves relative to the arc groove 17 at the inlet end of the guide main seat 1. The inlet end itself will not rotate with the guide main seat 1, but its outlet end will rotate with the guide main seat 1. During the rotation, the cable length between the inlet end and the outlet end becomes longer, and the push rod cable 8 at the outlet end is pulled, driving the connection structure mounting seat 22 at the end of the push rod cable 8 to move close to the side of the connection seat 21;

[0101] like Fig.11 As shown, the mounting seat 22 gradually approaches the connecting seat 21, and the mounting seat 22 moves in the first mounting groove 91, driving the inclined guide column 91 to approach the connecting seat 21. In the process of moving downward, the sliding seat 92 is driven to move outward toward both sides, thereby driving the push column 95 to gradually push the peripheral limit plate 3 outward, and the peripheral limit plate 3 abuts against the hole wall of the rear hole section of the crack, so as to realize the support and limit effect of the entire front end structure with the rear hole section 16 of the crack as the basic surface;

[0102] Afterwards, pushing the push rod cable 8 at the end of the winding frame 14 can push the guide main seat 1 to smoothly pass through the crack and enter the hole section 16 behind the crack with the smooth part 5 as the sliding surface.

[0103] The device of the present invention is not only applicable to the case where the position of the hole segment 16 after the fissure is higher than the hole segment 15 before the fissure, but also applicable to the case where there is an offset between the position of the hole segment 16 after the fissure and the position of the hole segment 15 before the fissure. For example, if the hole segment 16 after the fissure is lower than the hole segment 15 before the fissure, it can usually pass through the fissure directly without rotation. If the position of the hole segment 16 after the fissure is offset to both sides relative to the hole segment 15 before the fissure, it is necessary to rotate the front end structure to rotate the smooth part to the bottom, so that the smooth part spans the two hole segments, and the smooth part is pushed forward to pass through the fissure smoothly.

[0104] The present invention also provides a method for visualizing cracks in a dangerous rock exploration hole, comprising the following steps:

[0105] The front end of the device is pushed deeper into the exploration hole 4, and a thrust is applied to make the front end of the device continue to penetrate deeper into the exploration hole 4;

[0106] Keep the supporting protrusion 6 in contact with the hole so that the guide head seat 2 can move at a certain height in the hole;

[0107] Observe the real-time image in the hole, collect the crack parameters based on the crack detection, and continue the activity so that the guide head seat 2 first enters the hole section 16 behind the crack;

[0108] The guide head seat 2 is limited on the hole wall of the hole section 16 behind the crack, so that the hole section behind the crack is used as the base surface to form a support function for the entire front end structure;

[0109] By rotating the entire front end structure to make the supporting protrusion 6 away from the bottom of the hole wall, the push rod cable 8 can push the guide main seat 1 to pass through the crack with the smooth part as the sliding surface and enter the hole section 16 behind the crack, and then continue to conduct in-depth exploration work.

[0110] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A device for visualizing cracks in dangerous rock exploration holes, characterized in that: have: A guide main seat (1) is provided with a guide head seat (2) at its end. The guide main seat (1) and the guide head seat (2) are both arranged along the length direction of the exploration hole (4). At least part of the outer wall of the guide head seat (2) is smoothly connected to the guide main seat (1) to form a smooth portion (5). The side of the guide main seat (1) away from the smooth portion (5) exceeds the outer wall of the guide head seat (2) to form a supporting protrusion (6). A gimbal camera (7) is installed at the front end of the guide head seat (2). A push rod cable (8) is connected to the inner end of the gimbal camera (7). A peripheral limit plate (3) is arranged on the side of the guide head seat (2), and the peripheral limit plate (3) is arranged in a plurality, and the end of the peripheral limit plate (3) is hinged to the side of the guide head seat (2). An expansion drive member (9) is arranged in the guide head seat (2), and the expansion drive member (9) pushes the peripheral limit plate (3) outward along the radial direction of the guide head seat (2) so that the peripheral limit plate (3) abuts against the inner wall of the exploration hole (4); A cable sleeve (10) is installed at the end of the guide main seat (1) away from the guide head seat (2), and the cable sleeve (10) is sleeved outside the push rod cable (8). A rotating joint (11) is provided between the cable sleeve (10) and the guide main seat (1), and the rotating joint (11) drives the guide main seat (1) to rotate, so as to drive the supporting protrusion (6) away from the inner bottom of the exploration hole (4) and the smooth portion (5) close to the inner bottom of the exploration hole (4); The central axis position of the guide head seat (2) deviates from the central axis position of the guide main seat (1), and the center of gravity of the guide head seat (2) and the guide main seat (1) as a whole is located below the guide head seat (2); The angle between the peripheral limit plate (3) and the guide head seat (2) is 0° to 90°, and the peripheral limit plate (3) is located at a hinged portion of the outer wall of the guide head seat (2) on a side away from the guide main seat (1).

2. The device for visualizing cracks in dangerous rock exploration holes according to claim 1 is characterized in that: The guide main seat (1) comprises a main cylinder (101) and a bottom support cylinder (102) installed on the side of the main cylinder (101); The main tube (101) and the bottom support tube (102) are symmetrical in the vertical direction; the outer wall between the main tube (101) and the bottom support tube (102) is formed into a linear wall body (103); the central axis of the main tube (101) and the guide head seat (2) coincide with each other; and the connection surface between the central axis of the main tube (101) and the bottom support tube (102) is parallel to the linear wall body (103); Wherein, a cavity (104) for the push rod cable (8) to pass through is formed in the main tube (101) and the bottom support tube (102).

3. The device for visualizing cracks in dangerous rock exploration holes according to claim 2 is characterized in that: A side wall groove (12) is provided on the side of the guide head seat (2), the peripheral limit plate (3) is clamped in the side wall groove (12), the length of the peripheral limit plate (3) is smaller than the length of the side wall groove (12), a connecting shaft (13) is provided in the side wall groove (12), the end of the peripheral limit plate (3) is rotatably mounted on the connecting shaft (13), a torsion spring is provided on the connecting shaft (13), one end of the torsion spring is connected to the peripheral limit plate (3), and the other end is connected to the connecting shaft (13); The thickness of the peripheral limiting plate (3) is the same as the thickness of the side wall groove (12).

4. The device for visualizing cracks in dangerous rock exploration holes according to claim 3 is characterized in that: The guide head seat (2) comprises a connecting seat (21) arranged on the guide main seat (1) and a mounting seat (22) arranged on the connecting seat (21); The side wall groove (12) is arranged on the side wall of the connecting seat (21); The end of the connecting seat (21) is provided with a first mounting groove (23), the end of the mounting seat (22) is movably arranged in the first mounting groove (23), the outer wall of the mounting seat (22) is provided with an annular groove (24), and the side wall of the connecting seat (21) is slidably arranged in the annular groove (24); The universal camera (7) is mounted on the mounting seat (22); a first through groove (25) is provided on the connecting seat (21) along the central axis direction; a second through groove (26) is provided on the mounting seat (22) along the central axis direction; and the push rod cable (8) passes through the first through groove (25) and the second through groove (26).

5. The device for visualizing cracks in dangerous rock exploration holes according to claim 4 is characterized in that: The expansion drive member (9) comprises an inclined guide column (91) mounted on a side of the mounting seat (22) close to the connecting seat (21), and a sliding seat (92) slidably arranged in the first mounting groove (23); An oblique groove (93) is provided in the slide seat (92), the oblique guide column (91) is slidably arranged in the oblique groove (93), a second mounting groove (94) is provided on the side of the slide seat (92), a push column (95) is installed in the second mounting groove (94), one end of the push column (95) is connected to the inside of the mounting groove (94) through a mounting spring (96), and the other end abuts against the inner side of the peripheral limit plate (3); The push column (95) is located at the abutment point of the peripheral limit plate (3) close to the hinged end of the peripheral limit plate (3).

6. The device for visualizing cracks in dangerous rock exploration holes according to claim 5 is characterized in that: A tension spring (97) is provided on one side of the mounting seat (22) close to the connecting seat (21), and the radius of the tension spring (97) is greater than the radius of the first through-groove (25) and the second through-groove (26); The push rod cable (8) passes through the tension spring (97).

7. The device for visualizing cracks in dangerous rock exploration holes according to claim 1, characterized in that: The rotary joint (11) comprises a connector (111) connected to the end of the cable sleeve (10) and a rotary seat (112) connected to the connector; The end of the guide main seat (1) is rotatably mounted on the rotating seat (112); a gear groove (113) and an outer arc groove (114) are formed in the rotating seat (112); the gear groove (113) and the outer arc groove (114) are communicated with each other; a rotating gear (115) is arranged in the gear groove (113); the guide main seat (1) is connected to the rotating gear (115); a driving wheel (116) is arranged in the outer arc groove (114); the driving wheel (116) is externally connected to a micro motor; the driving wheel (116) passes between the gear groove (113) and the outer arc groove (114) and meshes with the rotating gear (115); The diameter of the top opening of the gear groove (113) is smaller than the diameter of the inner bottom, so as to limit the rotating gear (115) to be located in the gear groove (113).

8. The device for visualizing cracks in dangerous rock exploration holes according to claim 1, characterized in that: A winding frame (14) is provided at the end of the push rod cable (8), and the winding frame (14) winds and stores the push rod cable (8).

9. A visualization method according to any one of claims 1 to 8, characterized in that: The following steps are involved: Inserting the front end of the device deeper into the exploration hole (4), and applying a thrust so that the front end of the device continues to penetrate deeper into the exploration hole (4); The supporting protrusion (6) is kept in contact with the hole so that the guide head seat (2) moves at a certain height position in the hole; Observe the real-time image in the hole, collect the crack parameters based on the crack detection, and continue the activity so that the guide head seat (2) first enters the hole section (16) behind the crack; The guide head seat (2) is limited on the hole wall of the hole section (16) behind the crack, so that the hole section behind the crack is used as the base surface to form a support effect on the entire front end structure; By rotating the entire front end structure so that the supporting protrusion (6) is away from the bottom of the hole wall, the push rod cable (8) can push the guide main seat (1) to pass through the crack with the smooth part as the sliding surface and enter the hole section (16) behind the crack, and then continue to conduct in-depth exploration work.

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