A kind of straightening and supplementary light device of adjustable drilling television imager

Abstract

The present invention belongs to the technical field of borehole detection, and in particular, relates to a straightening and light-filling device for an adjustable borehole television imager, including a sling, and also including: an azimuth adjustment mechanism, a protective light-filling mechanism, multiple groups of lateral conflict mechanisms, an interval trigger mechanism, a light-filling brightness adjustment mechanism, multiple groups of obstacle sensing and processing mechanisms, a lowering speed control mechanism, and a PLC controller. The present invention can improve the automation of scanning and imaging the inner wall of the borehole, improve the exploration efficiency, can automatically adjust the light-filling intensity based on the depth of the television imager in the borehole, ensure that appropriate lighting can be provided in various situations, can quickly perceive and judge whether the television imager encounters obstacles during the lowering process, and promptly handle the obstacles when encountering obstacles, and automatically adjust the direction when it cannot be handled, so as to avoid these obstacles, find a more suitable path for lowering, and improve the success rate of lowering.

Description

Technical Field

[0001] The invention belongs to the technical field of borehole detection, and in particular relates to a straightening and light-filling device of an adjustable borehole television imager. Background Art

[0002] Borehole TV imager is a device used in geological exploration, engineering inspection and other fields. By placing a camera into the borehole to scan and image the borehole wall, it can visually observe the structure, cracks, rock stratification and other conditions of the borehole wall, and is used to understand the stratum structure, rock characteristics, fault and crack distribution, etc., providing important basis for mineral resource exploration, hydrogeological survey, etc.

[0003] In the use of borehole television imagers, a straightening device is used to protect the imager. For example, the patent with patent announcement number CN101169035B proposes an adjustable straightening and light-filling device for borehole television imagers. The straightening device can prevent the imager from directly colliding with the borehole wall and reduce the risk of equipment damage. Especially under complex geological conditions, there may be protruding rocks or other obstacles on the borehole wall. The straightening device can play a protective role. However, due to the irregularity of the inner wall of the borehole, the straightening and light-filling device may be stuck. If the staff does not have If this situation is not observed in time, the imager will be forced to lower, which will cause excessive pressure or pulling on the imager. Imagers are usually sophisticated and expensive. Excessive pressure or pulling can easily cause equipment damage, which will not only affect work progress but also bring about greater economic losses. Forced lowering will cause the imager and the straightening and supplementary lighting device to be stuck more thoroughly in the drill hole, resulting in a drill jam. It is very difficult to deal with the drill jam and requires professional tools or methods to release the jam. In severe cases, the hole may even need to be re-drilled, which seriously affects the project progress and cost. Summary of the invention

[0004] The object of the present invention is to provide an adjustable straightening and supplementary light device for a borehole television imager in view of the above-mentioned problems.

[0005] To achieve the above object, the present invention adopts the following technical scheme: an adjustable drilling television imager straightening and supplementary light device, including a sling, and also including:

[0006] An azimuth adjustment mechanism is fixedly mounted on the lower end of the sling;

[0007] A protective light supplement mechanism is fixedly mounted on the lower output end of the azimuth adjustment mechanism;

[0008] A plurality of sets of lateral interference mechanisms are equidistantly installed on the side walls at both ends of the protective light-filling mechanism;

[0009] An interval trigger mechanism is fixedly mounted outside one of the lateral conflict mechanisms and is transmission-connected to the lateral conflict mechanism;

[0010] A fill light brightness adjustment mechanism is fixedly mounted on the outer wall of the lateral interference mechanism and is transmission-connected to the interval trigger mechanism;

[0011] A plurality of groups of obstruction sensing and processing mechanisms are fixedly mounted at the lower end of the lateral conflict mechanism located at the lower side;

[0012] A lowering speed control mechanism is fixedly mounted at the lower end of the protective light supplement mechanism and is transmission-connected to the lateral conflict mechanism;

[0013] The PLC controller is fixedly mounted on the azimuth adjustment mechanism and is electrically connected to the azimuth adjustment mechanism, the protective fill light mechanism, the interval trigger mechanism, the fill light brightness adjustment mechanism, the obstruction sensing and processing mechanism and the lowering speed control mechanism.

[0014] In the above-mentioned straightening and fill-light device of an adjustable drilling television imager, the azimuth adjustment mechanism includes a mounting plate fixedly mounted at the lower end of the sling, a servo motor is fixedly mounted on the upper end of the mounting plate, the lower output end of the servo motor passes through the lower end of the mounting plate and is fixedly connected to the upper end of the protective fill-light mechanism, a warning switch is fixedly mounted on one side of the upper end of the protective fill-light mechanism, and a trigger protrusion corresponding to the position of the warning switch is fixedly mounted on one side of the lower end of the mounting plate.

[0015] In the above-mentioned adjustable drilling television imager's straightening and fill-light device, the protective fill-light mechanism includes two support plates symmetrically arranged up and down, a plurality of support rods are fixedly connected between the two support plates, and a fill-light board is fixedly installed on the rod wall of the support rod.

[0016] In the above-mentioned straightening and fill-light device of an adjustable drilling television imager, the lateral interference mechanism includes an extension rod, the side wall of the support plate is provided with a placement groove connected to the extension rod sleeve, and the surface of the support plate is provided with a positioning bolt for locking the extension rod. The end of the extension rod away from the support plate is fixedly connected to a fixed frame, and a plurality of interference rollers are rotatably connected to the fixed frame through a wheel axle.

[0017] In the above-mentioned centering and supplementary lighting device of an adjustable borehole TV imager, the interval triggering mechanism includes a trigger housing fixedly installed outside one of the fixed frames. A reciprocating lead screw is rotatably connected inside the trigger housing. The upper end of the reciprocating lead screw penetrates through the upper end of the trigger housing and is fixedly connected with a driven bevel gear. One of the axle shafts penetrates through and extends outside the fixed frame and is fixedly connected with a driving bevel gear meshing with the driven bevel gear. A reciprocating plate is threadedly sleeved on the rod wall of the reciprocating lead screw. A start switch corresponding to the position of the reciprocating plate is fixedly installed on one side of the inner wall of the trigger housing.

[0018] In the above-mentioned centering and supplementary lighting device of an adjustable borehole TV imager, the supplementary lighting brightness adjustment mechanism includes a reduction gearbox and an adjustment housing fixedly installed outside the fixed frame. The lower end of the reciprocating lead screw penetrates through the lower end of the trigger housing and is fixedly connected with the input end of the reduction gearbox. An adjustment screw is rotatably connected inside the adjustment housing. The upper end of the adjustment screw penetrates through the upper end of the adjustment housing and is fixedly connected with the output end of the reduction gearbox. An adjustment resistance rod parallel to the adjustment screw is fixedly installed on the inner wall of the adjustment housing. An adjustment seat is threadedly sleeved on the rod wall of the adjustment screw. An adjustment conductive contact piece in electrical contact with the adjustment resistance rod is fixedly installed on the side wall of the adjustment seat.

[0019] In the above-mentioned centering and supplementary lighting device of an adjustable borehole TV imager, the obstacle sensing and processing mechanism includes two positioning shells symmetrically and fixedly installed on the outer wall of the lower fixed frame. A jack is opened at the lower end of the positioning shell, and a stress rod is movably inserted into the corresponding jack. The lower ends of the two stress rods are fixedly connected with the same triangular impact block. The upper end of the stress rod is fixedly connected with a stress plate. A return spring sleeved on the stress rod is fixedly installed on the opposite sides of the stress plate and the positioning shell. The upper end of the stress plate is fixedly connected with a stress permanent magnet plate. An additional force electromagnetic plate opposite to the stress permanent magnet plate is fixedly installed on the upper side of the inner wall of the positioning shell. A micro laser rangefinder corresponding to the position of the triangular impact block is fixedly installed at the lower end of the fixed frame.

[0020] In the above-mentioned centering and supplementary lighting device of an adjustable borehole TV imager, the lowering speed control mechanism includes a control housing fixedly installed at the lower end of the lower support plate. A plurality of control switches are equidistantly and fixedly installed at the bottom of the inner wall of the control housing. A pressing round head corresponding to the position of the control switch is fixedly connected to the rod wall of the lower end of the extension rod. A strip-shaped through opening communicating with the placement groove and for the pressing round head to extend out is opened on the surface of the support plate.

[0021] Compared with the existing technology, the beneficial effects of the present invention are as follows:

[0022] 1. Through the protection and fill light mechanism, lateral resistance mechanism and interval trigger mechanism, the TV imager can be effectively protected and ensured to be in the center of the borehole, ensuring a stable and clear image. The lowering distance of the TV imager can be calculated synchronously and the TV imager can be automatically triggered to work at preset distances, thereby improving the automation of scanning and imaging of the inner wall of the borehole and improving exploration efficiency.

[0023] 2. Through the provision of a protective fill-light mechanism and a fill-light brightness adjustment mechanism, the TV imager can be automatically filled with light to ensure the imaging quality of the TV imager, and the fill-light intensity can be automatically adjusted based on the depth of the TV imager in the borehole to ensure that appropriate lighting is provided in all situations. The greater the depth of the TV imager in the borehole, the higher the fill-light intensity, because with the increase in exploration depth, natural light will gradually weaken. At this time, stronger fill-light is required to ensure that the TV imager captures a clear image. At the same time, it also avoids the problem of overexposure of the image due to excessive fill-light intensity when natural light is relatively sufficient.

[0024] 3. Through the set obstacle sensing and processing mechanism and azimuth adjustment mechanism, it is possible to quickly sense and judge whether the television imager encounters obstacles during the lowering process, and deal with the obstacles in time when encountering obstacles, and automatically adjust the direction when it cannot be dealt with, so as to avoid these obstacles, find a more suitable path for lowering, improve the success rate of lowering, avoid forced lowering that will cause the imager to be subjected to excessive pressure or pulling, resulting in equipment damage, and forced lowering will cause the imager and the straightening and fill-light device to be stuck in the drill hole more thoroughly, resulting in drill jamming accidents.

[0025] 4. Through the set lowering speed control mechanism, the lowering speed of the TV imager can be automatically adjusted based on the diameter of the drill hole. The lowering speed is increased when the drill hole diameter is large, because there is more space around the imager and it is not easy to collide with the hole wall. The drill hole with a smaller diameter provides a slower descent speed to prevent the TV imager from colliding and directly getting stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a front view structural schematic diagram of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the azimuth adjustment mechanism of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the protective light supplement mechanism of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the lateral conflict mechanism of the present invention;

[0030] Figure 5 It is a cross-sectional structural schematic diagram of the interval trigger mechanism of the present invention;

[0031] Figure 6 It is a schematic cross-sectional structure diagram of the fill light brightness adjustment mechanism of the present invention;

[0032] Figure 7 is a schematic cross-sectional structural diagram of the obstruction sensing processing mechanism of the present invention;

[0033] Figure 8 It is a cross-sectional structural schematic diagram of the lowering speed control mechanism of the present invention;

[0034] Figure 9 It is a three-dimensional structural schematic diagram of the lateral conflict mechanism of the present invention;

[0035] Figure 10 It is a three-dimensional structural schematic diagram of the connection between the driven bevel gear and the driving bevel gear of the present invention.

[0036] In the figure: 1 sling, 2 azimuth adjustment mechanism, 21 mounting plate, 22 servo motor, 23 warning switch, 24 trigger bump, 3 protective fill light mechanism, 31 support plate, 32 support rod, 33 fill light board, 4 lateral conflict mechanism, 41 extension rod, 42 placement slot, 43 fixing frame, 44 conflict roller, 5 interval trigger mechanism, 51 trigger shell, 52 reciprocating screw rod, 53 driven bevel gear, 54 driving bevel gear, 55 reciprocating plate, 56 start switch, 6 fill light Degree adjustment mechanism, 61 reduction gear box, 62 adjustment shell, 63 adjustment screw, 64 adjustment resistor rod, 65 adjustment seat, 66 adjustment conductive contact, 7 obstacle sensing processing mechanism, 71 positioning shell, 72 force rod, 73 triangular impact block, 74 force plate, 75 return spring, 76 force permanent magnet plate, 77 force electromagnetic plate, 78 micro laser rangefinder, 8 lowering speed control mechanism, 81 control shell, 82 control switch, 83 press round head, 84 strip port, 9 PLC controller. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] like Figures 1-10 As shown, a straightening and supplementary light device for an adjustable borehole television imager comprises a sling 1 and also comprises:

[0039] The azimuth adjustment mechanism 2 is fixedly mounted on the lower end of the sling 1. The azimuth adjustment mechanism 2 includes a mounting plate 21 fixedly mounted on the lower end of the sling 1. A servo motor 22 is fixedly mounted on the upper end of the mounting plate 21. The lower output end of the servo motor 22 passes through the lower end of the mounting plate 21 and is fixedly connected to the upper end of the protective fill light mechanism 3. A warning switch 23 is fixedly mounted on one side of the upper end of the protective fill light mechanism 3. A trigger protrusion 24 corresponding to the position of the warning switch 23 is fixedly mounted on one side of the lower end of the mounting plate 21. The lower position of the television imager can be adjusted according to needs, thereby achieving the function of stable lowering to avoid obstacles.

[0040] The protective fill-light mechanism 3 is fixedly mounted on the lower output end of the azimuth adjustment mechanism 2. The protective fill-light mechanism 3 includes two support plates 31 symmetrically arranged up and down. A plurality of support rods 32 are fixedly connected between the two support plates 31. A fill-light panel 33 is fixedly mounted on the rod wall of the support rod 32. The TV imager can be stably installed and fill-light can be provided for the scanning imaging environment to avoid the problem that an overly dark environment affects the imaging quality.

[0041] A plurality of lateral interference mechanisms 4 are equidistantly installed on the side walls at both ends of the protective fill light mechanism 3, the lateral interference mechanism 4 comprises an extension rod 41, the side wall of the support plate 31 is provided with a placement groove 42 connected to the extension rod 41 plug-in sleeve, the surface of the support plate 31 is provided with a positioning bolt for locking the extension rod 41, the end of the extension rod 41 away from the support plate 31 is fixedly connected to a fixing frame 43, and a plurality of interference rollers 44 are rotatably connected to the fixing frame 43 through the wheel axle, which can protect the peripheral side of the TV imager and reduce the shaking of the TV imager in the drilled hole, so that the lowering of the TV imager is more stable and located at the center of the drilled hole, thereby ensuring the imaging quality.

[0042] The interval trigger mechanism 5 is fixedly installed outside one of the lateral interference mechanisms 4 and is transmission-connected with the lateral interference mechanism 4. The interval trigger mechanism 5 includes a trigger shell 51 fixedly installed outside one of the fixed frames 43. A reciprocating screw 52 is rotatably connected in the trigger shell 51. The upper end of the reciprocating screw 52 passes through the upper end of the trigger shell 51 and is fixedly connected to a driven bevel gear 53. One of the wheel axles passes through and extends out of the fixed frame 43 and is fixedly connected to an active bevel gear 54 meshing with the driven bevel gear 53. A reciprocating plate 55 is threadedly sleeved on the rod wall of the reciprocating screw 52. A starting switch 56 corresponding to the position of the reciprocating plate 55 is fixedly installed on one side of the inner wall of the trigger shell 51. The trigger shell 51 can automatically detect the lowering depth of the television imager and trigger the operation of the television imager at intervals of a lowering distance based on preset requirements, so that the scanning and imaging of the inner wall of the borehole is highly automated and the work efficiency is improved.

[0043] The fill light brightness adjustment mechanism 6 is fixedly mounted on the outer wall of the lateral interference mechanism 4 and is transmission-connected with the interval trigger mechanism 5. The fill light brightness adjustment mechanism 6 includes a reduction gear box 61 and an adjustment shell 62 fixedly mounted outside the fixed frame 43. The lower end of the reciprocating screw 52 passes through the lower end of the trigger shell 51 and is fixedly connected to the input end of the reduction gear box 61. An adjusting screw 63 is rotatably connected in the adjustment shell 62. The upper end of the adjusting screw 63 passes through the upper end of the adjustment shell 62 and is fixedly connected to the output end of the reduction gear box 61. An adjusting resistor rod 64 arranged parallel to the adjusting screw 63 is fixedly mounted on the inner wall of the adjustment shell 62. An adjusting seat 65 is threadedly sleeved on the rod wall of the adjusting screw 63. An adjusting conductive contact 66 electrically contacting the adjusting resistor rod 64 is fixedly mounted on the side wall of the adjusting seat 65. The brightness of the fill light can be automatically adjusted based on the depth of the TV imager in the borehole to ensure the imaging quality of the TV imager.

[0044] Multiple groups of obstruction sensing processing mechanisms 7 are fixedly installed at the lower end of the lateral conflict mechanism 4 on the lower side. The obstruction sensing processing mechanism 7 includes two positioning shells 71 symmetrically fixedly installed on the outer wall of the lower fixed frame 43. The lower end of the positioning shell 71 is provided with a plug hole, and a force rod 72 is movably inserted in the corresponding plug hole. The lower ends of the two force rods 72 are fixedly connected to the same triangular impact block 73, and the upper ends of the force rods 72 are fixedly connected to the force plate 74. The force plate 74 and the positioning shell 71 are fixedly installed on the opposite side thereof. The return spring 75 outside the rod 72 and the upper end of the force-bearing plate 74 are fixedly connected with a force-bearing permanent magnetic plate 76. The upper side of the inner wall of the positioning shell 71 is fixedly provided with a force-applying electromagnetic plate 77 arranged opposite to the force-bearing permanent magnetic plate 76. The lower end of the fixed frame 43 is fixedly provided with a micro laser rangefinder 78 arranged corresponding to the position of the triangular impact block 73. It can automatically monitor whether the TV imager encounters obstacles during the lowering process, and provide timely feedback to make corresponding processing, so that the lowering process of the TV imager is automatically adjusted and drill jamming accidents can be avoided.

[0045] The lowering speed control mechanism 8 is fixedly mounted at the lower end of the protective fill light mechanism 3 and is transmission-connected to the lateral conflict mechanism 4. The lowering speed control mechanism 8 includes a control shell 81 fixedly mounted at the lower end of the lower support plate 31. A plurality of control switches 82 are fixedly mounted at equal intervals on the bottom of the inner wall of the control shell 81. A pressing round head 83 corresponding to the position of the control switch 82 is fixedly connected to the lower end rod wall of the extension rod 41. A strip-shaped through-hole 84 connected to the placement groove 42 and used for the pressing round head 83 to extend out is provided on the surface of the support plate 31.

[0046] The PLC controller 9 is fixedly mounted on the azimuth adjustment mechanism 2, and is electrically connected to the azimuth adjustment mechanism 2, the protective fill light mechanism 3, the interval trigger mechanism 5, the fill light brightness adjustment mechanism 6, the obstruction sensing processing mechanism 7 and the lowering speed control mechanism 8 respectively.

[0047] The operating principle of the present invention is described as follows: The TV imager is fixed between the upper and lower support plates 31. The sling 1 is connected to an external hoisting device to provide lowering support for the TV imager. The position of the extension rod 41 relative to the support plate 31 is adjusted according to the diameter of the drill hole [by sliding the extension rod 41 in the placement groove 42 formed on the side wall of the support plate 31 and locking the adjusted position of the extension rod 41 with a positioning bolt], so that the abutting rollers 44 in the fixing frame 43 can abut against the inner wall of the drill hole, making the lowering of the TV imager more stable, preventing the TV imager from shaking, providing better protection for the TV imager. During the lowering process of the TV imager, the abutting rollers 44 in the fixing frame 43 rotate due to contact with the inner wall of the drill hole, and then drive the reciprocating lead screw 52 to rotate by the meshing connection of the driving bevel gear and the driven bevel gear 53. Through the threaded socket connection between the reciprocating lead screw 52 and the reciprocating plate 55, the reciprocating plate 55 moves back and forth in the trigger housing 51. When the reciprocating plate 55 presses on the start switch 56, the PLC controller 9 controls the sling 1 to stop lowering the TV imager and controls the TV imager to scan and image the inner wall of the drill hole. The working state lasts for 20 s, and then the PLC controller 9 continues to control the sling 1 to drive the TV imager to lower until the reciprocating plate 55 presses on the start switch 56 again;

[0048] Moreover, as the depth of the TV imager lowered in the drill hole gradually increases, the reciprocating lead screw 52 cooperates with the reduction gearbox 61 to drive the adjusting screw 63 to rotate synchronously at a reduced speed. Then, through the threaded socket connection between the adjusting screw 63 and the adjusting seat 65, the adjusting seat 65 drives the adjusting conductive contact piece 66 to gradually move on the adjusting resistance rod 64, so that the resistance value of the adjusting resistance rod 64 gradually decreases. And the adjusting conductive contact piece 66 and the adjusting resistance rod 64 are connected in series in the power supply circuit of the supplementary light board 33, and the supplementary light board 33 is a DC power supply light board. Therefore, when the resistance value of the adjusting resistance rod 64 decreases, the supplementary light brightness of the supplementary light board 33 increases, providing better light compensation for the TV imager and ensuring the imaging quality of the TV imager;

[0049] When the protective supplementary lighting mechanism 3 encounters an obstacle formed by a protrusion on the inner wall of the drill hole during its downward movement, the blocked triangular impact block 73 will be subjected to a reverse force and move upward relative to the fixed frame 43. The micro laser rangefinder 78 detects that the distance from the triangular impact block 73 becomes shorter, and then feeds back a signal to the PLC controller 9. The PLC controller 9 controls the sling 1 to stop the continuous downward movement of the television imager, and controls the power supply device to supply an alternating power source to the force - adding electromagnetic plate 77. As a result, the force - adding electromagnetic plate 77 generates a magnetic field that changes back and forth. The force - adding electromagnetic plate 77 cooperates with the force - receiving permanent magnet plate 76 to drive the force - receiving plate 74 to drive the force - receiving rod 72 and the triangular impact block 73 to move up and down reciprocally, so as to impact and damage the protrusion on the inner wall of the drill hole. If the protrusion on the inner wall of the drill hole is relatively loose, it will become loose and fall off under this impact. At this time, the micro laser rangefinder 78 detects that the distance from the triangular impact block 73 will return to the normal distance. At this time, the PLC controller 9 controls the power supply device to cut off the power supply to the force - adding electromagnetic plate 77, and the PLC controls the sling 1 to continue to drive the television imager to move downward. And after the triangular impact block 73 impacts the protrusion on the inner wall of the drill hole for 60 s and the protrusion still exists, the PLC controller 9 also controls the power supply device to cut off the power supply to the force - adding electromagnetic plate 77, and controls the servo motor 22 to drive the entire protective supplementary lighting mechanism 3 to rotate 30°. Then continue to lower the television imager to observe whether the obstacle can be avoided, so as to find a more suitable path for lowering. And if it is still impossible to continue lowering after the azimuth adjustment, the PLC controller 9 controls the obstacle - sensing processing mechanism 7 to impact and process the protruding obstacle again. If it still cannot be processed, continue to control the servo motor 22 to drive the protective supplementary lighting mechanism 3 to rotate 30° until the television imager can continue to be lowered stably. And if after the servo motor 22 drives the protective supplementary lighting mechanism 3 to rotate one week, that is, when the convex block 24 presses on the warning switch 23 again, the television imager still cannot continue to be lowered, the PLC controller 9 will send a signal to the receiving terminal of the staff to warn that the continuous lowering action cannot be completed, and further processing of the inner wall of the drill hole is required to avoid the problem of a stuck - drill accident caused by the television imager being completely stuck;

[0050] When adjusting the extension rod 41 based on the inner diameter of the drill hole, the extension rod 41 drives the pressing round head 83 to move synchronously. The larger the inner diameter of the drill hole, the greater the outward movement distance of the extension rod 41. The pressing round head 83 will finally press on the more rear - side regulation switch 82. Then the PLC controller 9 controls the external hoisting equipment to drive the sling 1 to work at a faster lowering speed, improving the exploration efficiency.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An adjustable borehole television imager straightening and supplementary light device, comprising a sling (1), characterized in that: Also includes: An orientation adjustment mechanism (2) is fixedly mounted on the lower end of the sling (1); A protective light supplement mechanism (3) is fixedly mounted on the lower output end of the azimuth adjustment mechanism (2); A plurality of sets of lateral abutment mechanisms (4) are equidistantly distributed and installed on the side walls at both ends of the protective light-filling mechanism (3); An interval trigger mechanism (5) is fixedly mounted outside one of the lateral conflict mechanisms (4) and is transmission-connected to the lateral conflict mechanism (4); A fill light brightness adjustment mechanism (6) is fixedly mounted on the outer wall of the lateral abutment mechanism (4) and is transmission-connected to the interval trigger mechanism (5); A plurality of groups of obstruction sensing and processing mechanisms (7) are fixedly mounted on the lower end of the lateral interference mechanism (4) located at the lower side; A lowering speed control mechanism (8) is fixedly mounted at the lower end of the protective light supplement mechanism (3) and is drivingly connected to the lateral conflict mechanism (4); The PLC controller (9) is fixedly mounted on the azimuth adjustment mechanism (2), and is respectively electrically connected to the azimuth adjustment mechanism (2), the protective fill light mechanism (3), the interval trigger mechanism (5), the fill light brightness adjustment mechanism (6), the obstruction sensing and processing mechanism (7), and the lowering speed control mechanism (8).

2. The light supplementing and straightening device of an adjustable borehole TV imager according to claim 1, wherein The orientation adjustment mechanism (2) comprises a mounting plate (21) fixedly mounted at the lower end of the sling (1); a servo motor (22) is fixedly mounted at the upper end of the mounting plate (21); a lower output end of the servo motor (22) passes through the lower end of the mounting plate (21) and is fixedly connected to the upper end of the protective light-filling mechanism (3); a warning switch (23) is fixedly mounted on one side of the upper end of the protective light-filling mechanism (3); and a triggering protrusion (24) corresponding to the position of the warning switch (23) is fixedly mounted on one side of the lower end of the mounting plate (21).

3. The light supplementing and alignment device for an adjustable borehole TV imager according to claim 1, wherein, The protective fill-light mechanism (3) comprises two support plates (31) symmetrically arranged up and down, a plurality of support rods (32) are fixedly connected between the two support plates (31), and a fill-light panel (33) is fixedly mounted on the rod wall of the support rod (32).

4. The light supplementing and alignment device for an adjustable borehole TV imager according to claim 3, characterized in that, The lateral interference mechanism (4) comprises an extension rod (41), a side wall of the support plate (31) is provided with a placement groove (42) connected to the extension rod (41) by a sleeve, a positioning bolt for locking the extension rod (41) is arranged on the surface of the support plate (31), one end of the extension rod (41) away from the support plate (31) is fixedly connected to a fixing frame (43), and a plurality of interference rollers (44) are rotatably connected in the fixing frame (43) via a wheel shaft.

5. The centering and light supplementing device of an adjustable borehole television imager according to claim 4, characterized in that, The interval triggering mechanism (5) includes a trigger housing (51) fixedly installed outside one of the fixed frames (43). A reciprocating lead screw (52) is rotatably connected inside the trigger housing (51). The upper end of the reciprocating lead screw (52) penetrates through the upper end of the trigger housing (51) and is fixedly connected to a driven bevel gear (53). One of the axle shafts penetrates and extends outside the fixed frame (43) and is fixedly connected to a driving bevel gear (54) meshing with the driven bevel gear (53). A reciprocating plate (55) is threadedly sleeved on the rod wall of the reciprocating lead screw (52). A start switch (56) corresponding to the position of the reciprocating plate (55) is fixedly installed on one side of the inner wall of the trigger housing (51).

6. The light supplementing and alignment device for an adjustable borehole TV imager according to claim 5, characterized in that, The supplementary light brightness adjustment mechanism (6) includes a reduction gearbox (61) and an adjustment housing (62) fixedly installed outside the fixed frame (43). The lower end of the reciprocating lead screw (52) penetrates through the lower end of the trigger housing (51) and is fixedly connected to the input end of the reduction gearbox (61). An adjustment screw (63) is rotatably connected inside the adjustment housing (62). The upper end of the adjustment screw (63) penetrates through the upper end of the adjustment housing (62) and is fixedly connected to the output end of the reduction gearbox (61). An adjustment resistance bar (64) parallel to the adjustment screw (63) is fixedly installed on the inner wall of the adjustment housing (62). An adjustment seat (65) is threadedly sleeved on the rod wall of the adjustment screw (63). An adjustment conductive contact piece (66) in electrical contact with the adjustment resistance bar (64) is fixedly installed on the side wall of the adjustment seat (65).

7. The light supplementing and alignment device for an adjustable borehole TV imager according to claim 4, characterized in that, The obstacle sensing and processing mechanism (7) includes two positioning shells (71) symmetrically and fixedly installed on the outer wall of the lower fixed frame (43). A jack is opened at the lower end of the positioning shell (71), and a force-bearing rod (72) is movably inserted into the corresponding jack. The lower ends of the two force-bearing rods (72) are fixedly connected to the same triangular impact block (73). The upper end of the force-bearing rod (72) is fixedly connected to a force-bearing plate (74). A return spring (75) sleeved on the force-bearing rod (72) is fixedly installed on the opposite sides of the force-bearing plate (74) and the positioning shell (71). The upper end of the force-bearing plate (74) is fixedly connected to a force-bearing permanent magnet plate (76). An additional force electromagnetic plate (77) opposite to the force-bearing permanent magnet plate (76) is fixedly installed on the upper side of the inner wall of the positioning shell (71). A micro laser rangefinder (78) corresponding to the position of the triangular impact block (73) is fixedly installed at the lower end of the fixed frame (43).

8. The light supplementing and alignment device for an adjustable borehole television imager according to claim 4, characterized in that, The lowering speed control mechanism (8) includes a control housing (81) fixedly installed at the lower end of the lower support plate (31). A plurality of control switches (82) are equidistantly and fixedly installed at the bottom of the inner wall of the control housing (81). A pressing round head (83) corresponding to the position of the control switch (82) is fixedly connected to the rod wall of the lower end of the extension rod (41). A strip-shaped through port (84) communicating with the placement groove (42) and for the pressing round head (83) to protrude is opened on the surface of the support plate (31).

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