Drill rod fishing device in geological drilling hole

Abstract

The invention discloses a device for salvaging a drill rod in a geological drilling hole, and relates to the technical field of drill rod salvaging, the device comprises a support frame slidably mounted on a U-shaped frame, a through shaft type stepping motor is fixed in the middle of the support frame, the through shaft type stepping motor is in up-down transmission connection with a threaded rod, and a detection salvaging structure is fixed at the bottom of the threaded rod; the drilling rod can be accurately positioned and clamped through the camera module, the detection fishing structure is combined, when the drilling rod enters downwards, mineral oil is smeared on the inner wall of a drilling hole through the lubricating structure, friction force is reduced, and when the double-clamping structure is used for clamping, the broken drilling rod is folded and clamped through the multiple clamping mechanisms; the broken drill rod is tightly wrapped by the inflation bag and the connected protruding block, the connecting friction force of the broken drill rod is large, the inner wall of the drill hole is coated with mineral oil, the friction resistance with the outside is reduced, and therefore the broken drill rod is not prone to falling off when pulled upwards, the drill rod is stably fished out of the drill hole, and the fishing efficiency and the success rate are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of drill rod salvage, in particular to a drill rod salvage device in a geological drilling hole. Background Art

[0002] Geological drilling is a drilling work aimed at finding out the underground geological conditions. In the geological survey stage, survey drills are drilled to understand the strata and geological structures; in the detailed survey stage, drilling methods are used to conduct more detailed and thorough exploration to find out the occurrence, grade and reserves of minerals. Drilling is an important technical means in geological exploration. Geological drilling mainly breaks rocks and drills holes through rotation and impact force. In the long-term geological drilling process, it is easy for the drill rod to break or fall off during the drilling process. Therefore, it is generally necessary to use a salvage device to salvage the drill rod in the borehole.

[0003] According to the "Drill Pipe Salvage Device" provided by Chinese Patent Authorization Announcement No. CN219387836U, the drill pipe joint 1 of the device can be connected to the drill pipe of the drilling rig, and the device can be lowered into the borehole using the drilling rig. When the salvage tongs encounter the remaining drill pipe, go down 30 to 40 cm, and then rotate the upper drill pipe to drive the salvage tongs to rotate, so that the salvage tongs can buckle the remaining drill pipe, and then slowly lift the drill pipe upwards so that the jaws of the salvage tongs are stuck on the head of the remaining drill pipe, and then the drill pipe can be lifted upwards with force to slowly salvage the remaining drill pipe.

[0004] However, the device is tightly connected to the drill pipe through a simple salvage clamp structure to bring the drill pipe out of the borehole. The single clamping method has limited clamping force and is difficult to cope with salvage operations under complex geological conditions. During the lifting process, the drill pipe has a large contact friction resistance with the inside of the borehole, which makes it easy for the drill pipe to fall off. In addition, it is difficult to accurately locate the position of the broken drill pipe, resulting in a long time-consuming and low-efficiency salvage operation.

[0005] Therefore, it is necessary to design a drill rod salvage device in a geological drilling hole to solve the problem. Summary of the invention

[0006] The present invention provides a drill rod fishing device in a geological drilling hole, which solves the above-mentioned technical problems.

[0007] In order to solve the above technical problems, the present invention provides a drill rod salvage device in a geological drilling hole, comprising a support frame slidably mounted on a U-shaped frame, a through-shaft stepper motor is fixed in the middle of the support frame, a threaded rod is connected to the through-shaft stepper motor for transmission up and down, the threaded rod passes through the top of the support frame, a guide seat is fixed on one side of the top of the support frame, a moving groove is provided in the guide seat, a moving block is slidably connected inside the moving groove, a connecting rod is fixed on the upper part of the threaded rod, the connecting rod is fixedly connected to the moving block, an air pump and a control display screen are also fixedly mounted on the top of the support frame, a gas transmission cavity is provided inside the threaded rod, a pneumatic rotary joint is fixedly mounted on the top of the threaded rod, and a detection and salvage structure is fixed on the bottom of the threaded rod;

[0008] The detection and salvage structure includes a lubrication structure fixedly connected to the bottom of the threaded rod, a spiral alloy cylinder fixed to the bottom of the lubrication structure, a double clamping structure slidably connected to the bottom of the spiral alloy cylinder, and a corrugated sleeve fixed between the corrugated sleeve and the double clamping structure.

[0009] Preferably, a bracket is fixed on the top of the support frame, and the fixed body on the top of the bracket has a guide wheel structure. The output end of the air pump is connected to a metal hose, which is installed on a pneumatic rotary joint through the guide wheel structure, and the inside of the gas delivery cavity is connected, and the gas delivery cavity passes through the spiral alloy cylinder.

[0010] Preferably, the lubrication structure includes an alloy cylinder shell fixedly connected to the pneumatic rotary joint, an oil chamber is provided inside the alloy cylinder shell and is injected with mineral oil, an injection port is opened on the top of the alloy cylinder shell and is connected to the oil chamber, and a sealing plug is embedded in the injection port, a plurality of sponge blocks are fixed to the lower surface of the alloy cylinder shell, and a plurality of seepage holes are opened at the connection between the sponge blocks and the alloy cylinder shell and are connected to the oil chamber.

[0011] Preferably, a large annular cavity and a small annular cavity are connected inside the spiral alloy cylinder, a blowing hole is opened at the top of the large annular cavity to communicate with the gas transmission cavity, and a recessed groove is opened on the side close to the blowing hole, and a plurality of sliders are evenly fixed on the lower wall of the small annular cavity, which are slidably connected to the double clamping structure through the sliders.

[0012] Preferably, the double clamping structure includes a telescopic sleeve with multiple sliding grooves, the telescopic sleeve is inserted into the small annular cavity of the spiral alloy cylinder, multiple sliders are slidably connected with the multiple sliding grooves, the telescopic sleeve is annularly penetrated with multiple movable grooves, each movable groove is provided with a clamping mechanism, a camera module is fixed to one side of the top of the telescopic sleeve corresponding to the recessed groove up and down, and multiple air holes are provided on the top of the telescopic sleeve.

[0013] Preferably, the spiral alloy cylinder includes a connecting shaft fixed to the upper part of the movable groove, a clamping block is rotatably installed in the middle of the connecting shaft, torsion springs are sleeved on both sides of the connecting shaft, and both ends of the torsion spring are respectively fixedly connected to the side wall of the movable groove and the clamping block.

[0014] Preferably, the clamping block is elastically limited inside the telescopic sleeve at a forty-five degree tilt by two torsion springs, and the upper part of the telescopic sleeve is inserted into the small annular cavity of the spiral alloy cylinder, and the clamping mechanism is elastically limited in the movable groove to remain vertical.

[0015] Preferably, the camera module includes a housing, a camera, a lighting lamp, a battery, a wireless module and a control mainboard. The camera, the lighting lamp, the battery and the wireless module are electrically mounted on the control mainboard. The control mainboard is wirelessly connected to the control display screen via the wireless module. The top of the telescopic sleeve is transparent, and the camera faces the bottom of the telescopic sleeve.

[0016] Preferably, a connecting tube is fixed to the bottom of the telescopic sleeve, a mounting groove is provided on the inner wall of the connecting tube, an inflatable bag is fixed in the mounting groove, a plurality of protrusions are fixed on the outside of the inflatable bag, a vent joint is fixed to the top of the telescopic sleeve, a ring gasket is connected to the vent joint corresponding to the blowing hole, and an air transmission channel is provided inside the telescopic sleeve, and the air transmission channel is fixedly connected to the inflatable bag and the vent joint.

[0017] Preferably, the control display screen includes a shell, a display screen module, a main control circuit board, a button setting module, and a wireless communication module. The main control circuit board is electrically connected to the display screen module, the main control circuit board, the button setting module, the air pump, the through-axis stepper motor and the wireless communication module, and the main control circuit board is wirelessly connected to the camera module through the wireless communication module.

[0018] Compared with the related art, the drill rod salvage device in a geological drilling hole provided by the present invention has the following beneficial effects:

[0019] The present invention provides a camera module that can accurately realize the positioning and clamping of the drill rod. When the drill rod is inserted downward, mineral oil is smeared on the inner wall of the borehole through the lubrication structure to reduce friction. When the double clamping structure is clamped, the broken drill rod is clamped by multiple clamping mechanisms, and the broken drill rod is tightly wrapped with the expansion of the air bag and the connected protrusions, so that the connection friction is large. In addition, the inner wall of the borehole is smeared with mineral oil, and the friction resistance with the outside is reduced, so that it is not easy to fall off when pulled upward, and the drill rod is stably salvaged from the borehole, which greatly improves the salvage efficiency and success rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall schematic diagram of a drill rod salvaging device in a geological drilling hole of the present invention;

[0021] Figure 2 It is a schematic diagram of the front view of a drill rod fishing device in a geological drilling hole according to the present invention;

[0022] Figure 3 It is a schematic diagram of the connection between the threaded rod and the detection and salvage structure of the present invention;

[0023] Figure 4 It is a cross-sectional schematic diagram of the connection between the threaded rod and the detection and salvage structure of the present invention;

[0024] Figure 5 This is an enlarged schematic diagram of point A of the present invention;

[0025] Figure 6 It is a schematic diagram of the double clamping structure of the present invention;

[0026] Figure 7 It is a bottom view schematic diagram of the double clamping structure of the present invention;

[0027] Figure 8 It is a schematic diagram of the clamping mechanism of the present invention;

[0028] Fig. 9 It is a schematic cross-sectional diagram of the contraction clamping of the double clamping structure of the present invention.

[0029] Numbers in the figure: 1, support frame; 2, air pump; 3, guide seat; 31, connecting rod; 32, through-axis stepper motor; 4, threaded rod; 41, pneumatic rotary joint; 42, gas transmission cavity; 5, control display screen; 6, detection and salvage structure; 61, lubrication structure; 611, oil cavity; 612, alloy cylinder; 613, seepage hole; 614, sponge block; 615, sealing plug; 62, spiral alloy cylinder; 622, large annular cavity; 6221, concave groove; 623, small Annular cavity; 624, slider; 63, bellows; 64, double clamping structure; 641, telescopic sleeve; 6411, slide groove; 6412, air transmission channel; 6413, air vent; 642, clamping mechanism; 6421, clamping block; 6422, connecting shaft; 6423, torsion spring; 643, movable groove; 644, ventilation joint; 645, camera module; 646, connecting tube; 647, inflatable bag; 648, bump; 7, U-shaped frame; 8, guide wheel structure. DETAILED DESCRIPTION

[0030] Embodiment 1, by Figure 1-9Provided is a drill rod salvaging device in a geological drilling hole, comprising a support frame 1 slidably mounted on a U-shaped frame 7, a through-shaft stepper motor 32 is fixed in the middle of the support frame 1, a threaded rod 4 is connected to the through-shaft stepper motor 32 for transmission up and down, the threaded rod 4 passes through the top of the support frame 1, a guide seat 3 is fixed to one side of the top of the support frame 1, a moving groove is opened in the guide seat 3, a moving block is slidably connected inside the moving groove, a connecting rod 31 is fixed to the upper part of the threaded rod 4, the connecting rod 31 is fixedly connected to the moving block, an air pump 2 and a control display screen 5 are also fixedly mounted on the top of the support frame 1, a gas transmission cavity 42 is opened inside the threaded rod 4, a pneumatic rotary joint 41 is fixedly mounted on the top of the threaded rod 4, and a detection and salvage structure 6 is fixed to the bottom of the threaded rod 4;

[0031] Specifically, the through-axis stepper motor 32 drives the threaded rod 4 to move downward, and the moving block connected by the threaded rod 4 through the connecting rod 31 slides steadily downward in the moving groove of the guide seat 3, and the detection and salvage structure 6 enters the borehole downward to contact and salvage the broken drill rod.

[0032] Among them, a bracket is fixed on the top of the support frame 1, and a guide wheel structure 8 is provided on the fixed body on the top of the bracket. A metal hose is connected to the output end of the air pump 2. The metal hose passes through the guide wheel structure 8 and is installed on the pneumatic rotary joint 41. The inside of the air delivery cavity 42 is connected, and the air delivery cavity 42 penetrates into the spiral alloy cylinder 62. When the air pump 2 is working and blowing, the air enters the air delivery cavity 42 downward, and is blown out from the blowing holes of the spiral alloy cylinder 62. The air enters the large annular cavity 622, and is then blown out from the multiple air holes 6413 on the telescopic sleeve 641 to the inside of the drilled hole.

[0033] In this embodiment, the detection and salvage structure 6 includes a lubrication structure 61 fixedly connected to the bottom of the threaded rod 4, a spiral alloy tube 62 is fixed to the bottom of the lubrication structure 61, a double clamping structure 64 is slidably connected to the bottom of the spiral alloy tube 62, and a corrugated sleeve 63 is fixed between the corrugated sleeve 63 and the double clamping structure 64.

[0034] Specifically, the broken drill pipe is clamped by the double clamping structure 64, and the inner wall of the borehole is coated with mineral oil to reduce the friction resistance with the outside, so that it is not easy to fall off when pulled upward, and the drill pipe can be stably salvaged from the borehole, greatly improving the salvage efficiency and success rate.

[0035] In this embodiment, a large annular cavity 622 and a small annular cavity 623 are connected inside the spiral alloy cylinder 62. A blowing hole is provided at the top of the large annular cavity 622 to communicate with the gas delivery cavity 42, and a recessed groove 6221 is provided on one side close to the blowing hole. A plurality of sliders 624 are evenly fixed on the lower wall of the small annular cavity 623, which is slidably connected to the double clamping structure 64 through the sliders 624.

[0036] In this embodiment, the double clamping structure 64 includes a telescopic sleeve 641 with a plurality of slide grooves 6411, the telescopic sleeve 641 is inserted into the small annular cavity 623 of the spiral alloy cylinder 62, a plurality of sliders 624 are slidably connected with the plurality of slide grooves 6411, the telescopic sleeve 641 is annularly penetrated with a plurality of movable grooves 643, each movable groove 643 is provided with a clamping mechanism 642, a camera module 645 is fixed on one side of the top of the telescopic sleeve 641 corresponding to the concave groove 6221, a plurality of air holes 6413 are provided on the top of the telescopic sleeve 641, the air pump 2 works to blow air, and air enters the air delivery cavity 42 The air is blown downward from the blowing holes of the spiral alloy cylinder 62, enters the large annular cavity 622, and is then blown out to the inside of the borehole from the multiple air holes 6413 on the telescopic sleeve 641. When approaching the position of the broken drill rod, the soil particles around the drill rod can be blown away, making it convenient for subsequent clamping work. The spiral alloy cylinder 62 includes a connecting shaft 6422 fixed to the upper inner part of the movable groove 643, a clamping block 6421 is rotatably installed in the middle part of the connecting shaft 6422, and torsion springs 6423 are sleeved on both sides of the connecting shaft 6422, and the two ends of the torsion spring 6423 are respectively fixedly connected to the side wall of the movable groove 643 and the clamping block 6421.

[0037] Specifically, when the telescopic tube is inserted downward into the broken drill pipe, the staff checks the picture taken by the camera through the control display screen 5, and continues to control the detection and salvage structure 6 downward, and the broken drill pipe presses against the telescopic sleeve 641. The telescopic sleeve 641 is stressed and moves upward stably through the slide groove 6411 and the slider 624. At this time, the upper part of the telescopic sleeve 641 enters the large annular groove, and the upper parts of the multiple clamping mechanisms 642 are no longer squeezed, so that the torsion spring 6423 on the connecting shaft 6422 of each clamping block 6421 rebounds and drives the clamping block 6421 to return to its original position, and the multiple clamping blocks 6421 are tilted and gathered together to straighten and clamp the broken drill pipe;

[0038] Among them, the clamping block 6421 is elastically limited at a forty-five degree tilt inside the telescopic sleeve 641 by two torsion springs 6423, and the upper part of the telescopic sleeve 641 is inserted into the small annular cavity 623 of the spiral alloy cylinder 62. The clamping mechanism 642 is elastically limited in the movable groove 643 to remain vertical. The outer diameter of the spiral alloy cylinder 62 is larger than the outer diameter of the double clamping structure 64, so that the double clamping structure 64 will not be squeezed to shrink into the large annular cavity 622 during its downward movement. Multiple clamping mechanisms 642 are limited by the small annular cavity 623 and remain in a vertical state in the connecting groove.

[0039] In this embodiment, the camera module 645 includes a shell, a camera, a lighting lamp, a battery, a wireless module and a control mainboard. The camera, the lighting lamp, the battery and the wireless module are all electrically installed on the control mainboard. The control mainboard is wirelessly connected to the control display screen 5 through the wireless module. The top of the telescopic sleeve 641 is transparent, and the camera faces the bottom of the telescopic sleeve 641; the control display screen 5 includes a shell, a display screen module, a main control circuit board, a button setting module, and a wireless communication module. The main control circuit board is electrically connected to the display screen module, the main control circuit board, the button setting module, the air pump 2, the through-axis stepper motor 32 and the wireless communication module, and the main control circuit board is wirelessly connected to the camera module 645 through the wireless communication module.

[0040] Specifically, instructions are input through the button setting module, the main control circuit board receives the instructions, controls the air pump 2 and the through-axis stepper motor 32 to work, and at the same time, the wireless communication module, that is, the WiFi module, sends the signal to the wireless module, the wireless module receives the instructions, sends them to the control main board, controls the camera to work, the camera sends the captured image to the control main board, the control main board transmits the data through the wireless module, the wireless communication module sends the received data to the main control circuit board, and the main control circuit board sends it to the display module to display the captured image.

[0041] Embodiment 2, on the basis of embodiment 1, the lubrication structure 61 includes an alloy cylinder shell 612 fixedly connected to the pneumatic rotary joint 41, an oil chamber 611 is arranged inside the alloy cylinder shell 612, and mineral oil is injected therein, an injection port is opened on the top of the alloy cylinder shell 612 and connected to the oil chamber 611, and a sealing plug 615 is embedded in the injection port, a plurality of sponge blocks 614 are fixed on the lower surface of the alloy cylinder shell 612, a plurality of seepage holes 613 are opened at the connection between the sponge blocks 614 and the alloy cylinder shell 612 and connected to the oil chamber 611.

[0042] Specifically, the threaded rod 4 drives the detection and salvage structure 6 downward to enter the drilling process, and the mineral oil in the oil chamber 611 of the alloy cylinder 612 penetrates into the sponge block 614 through multiple seepage holes 613. The sponge block 614 is pressurized and deformed in the borehole, and the mineral oil is smeared on the inner wall of the borehole to reduce friction, thereby reducing resistance when moving up and down.

[0043] Embodiment 3, on the basis of embodiment 1, a connecting tube 646 is fixed to the bottom of the telescopic sleeve 641, a mounting groove is provided on the inner wall of the connecting tube 646, an inflatable bag 647 is fixed in the mounting groove, a plurality of protrusions 648 are fixed to the outside of the inflatable bag 647, a vent connector 644 is fixed to the top of the telescopic sleeve 641, the vent connector 644 is connected with a ring gasket corresponding to the blowing hole, and an air delivery channel 6412 is provided inside the telescopic sleeve 641, and the air delivery channel 6412 is fixedly connected to the inflatable bag 647 and the vent connector 644.

[0044] Specifically, when the upper portion of the telescopic sleeve 641 enters the large annular groove, the vent joint 644 on the upper portion of the telescopic sleeve 641 is inserted into the blowing hole, allowing air to enter the inflatable bag 647 through the air delivery channel 6412. The inflatable bag 647 expands to tightly wrap the broken drill rod, and a plurality of protrusions 648 are in close contact with the broken drill rod.

[0045] Working principle:

[0046] During geological drilling, if the drill bit of the drilling hole breaks in the borehole, the device is carried to the drilling position and adjusted so that the detection and salvage structure 6 is aligned with the drilling position with the same aperture, and the control display screen 5 is connected to the outdoor power supply to power the device;

[0047] When working, the command is input through the key setting module, the main control circuit board receives the command, controls the air pump 2 and the through-axis stepping motor 32 to work, and at the same time, the signal is sent to the wireless module through the wireless communication module, that is, the WiFi module, the wireless module receives the command and sends it to the control main board to control the camera to work, the camera sends the captured image to the control main board, the control main board transmits the data through the wireless module, the wireless communication module sends the received data to the main control circuit board, and the main control circuit board sends it to the display module to display the captured image;

[0048] The through-axis stepper motor 32 drives the threaded rod 4 to move downward, and the moving block connected by the threaded rod 4 through the connecting rod 31 slides steadily downward in the moving groove of the guide seat 3, and the detection and salvage structure 6 enters the borehole downward;

[0049] During the downward movement, the outer diameter of the spiral alloy cylinder 62 is larger than the outer diameter of the double clamping structure 64, so that the double clamping structure 64 will not be squeezed and contracted into the large annular cavity 622 during the downward movement, and the multiple clamping mechanisms 642 are limited by the small annular cavity 623 and remain in a vertical state in the connecting groove;

[0050] Moreover, the mineral oil in the oil chamber 611 of the alloy cylinder 612 penetrates into the sponge block 614 through the plurality of liquid seepage holes 613, and the sponge block 614 is deformed under pressure in the borehole, and the mineral oil is applied to the inner wall of the borehole to reduce friction, thereby reducing resistance when moving up and down;

[0051] At the same time, the air pump 2 works to blow air, the air enters the air delivery cavity 42 downward, blows out from the blowing hole of the spiral alloy cylinder 62, enters the large annular cavity 622, and then blows out from the multiple air holes 6413 on the telescopic sleeve 641 to the inside of the drill hole. When it is close to the broken drill rod position, the soil particles around the drill rod can be blown away, which is convenient for subsequent clamping work;

[0052] When the telescopic tube is inserted into the broken drill pipe downward, the staff checks the image captured by the camera through the control display screen 5, and continues to control the detection and salvage structure 6 downward. The broken drill pipe presses against the telescopic sleeve 641, and the telescopic sleeve 641 is stressed and moves upward stably through the slide groove 6411 and the slider 624. At this time, the upper part of the telescopic sleeve 641 enters the large annular groove, and the upper parts of the multiple clamping mechanisms 642 are no longer squeezed, so that the torsion spring 6423 on the connecting shaft 6422 of each clamping block 6421 rebounds and drives the clamping block 6421 to return to its original position, and the multiple clamping blocks 6421 are tilted and gathered together to straighten and clamp the broken drill pipe;

[0053] At the same time, the vent joint 644 on the upper part of the telescopic sleeve 641 is inserted into the blowing hole, so that air enters the inflatable bag 647 through the air delivery channel 6412. The inflatable bag 647 expands to tightly wrap the broken drill rod, and the multiple protrusions 648 are in close contact with the broken drill rod;

[0054] After the staff confirms that it has been clamped by taking a photo with a camera, they control the through-axis stepper motor 32 to work in reverse, driving the threaded rod 4 to move upward, pulling the broken drill rod upward and out of the borehole, and the broken drill rod is clamped by multiple clamping mechanisms 642, and the inflatable bag 647 is expanded and the connected protrusion 648 is used to tightly wrap the broken drill rod, so that the connection friction is large, and the inner wall of the borehole is coated with mineral oil to reduce the friction resistance with the outside, so that it is not easy to fall off when pulled upward, and the drill rod is stably salvaged from the borehole, greatly improving the salvage efficiency and success rate.

Claims

1. A drilling rod fishing device for geological drilling holes, comprising a support frame (1) slidably mounted on a U-shaped frame (7), characterized in that: A through-axis stepper motor (32) is fixed in the middle of the support frame (1), and a threaded rod (4) is connected to the through-axis stepper motor (32) for transmission up and down. The threaded rod (4) passes through the top of the support frame (1), and a guide seat (3) is fixed to one side of the top of the support frame (1). The guide seat (3) is provided with a moving groove, and a moving block is slidably connected inside the moving groove. A connecting rod (31) is fixed to the upper part of the threaded rod (4), and the connecting rod (31) is fixedly connected to the moving block. An air pump (2) and a control display screen (5) are also fixedly installed on the top of the support frame (1). An air delivery cavity (42) is provided inside the threaded rod (4), and a pneumatic rotary joint (41) is fixedly installed on the top of the threaded rod (4). A detection and salvage structure (6) is fixed to the bottom of the threaded rod (4); The detection and salvage structure (6) comprises a lubrication structure (61) fixedly connected to the bottom of the threaded rod (4), a spiral alloy cylinder (62) fixed to the bottom of the lubrication structure (61), a double clamping structure (64) slidably connected to the bottom of the spiral alloy cylinder (62), and a corrugated sleeve (63) fixed between the corrugated sleeve (63) and the double clamping structure (64).

2. A drill rod salvaging device in a geological drilling hole according to claim 1, characterized in that: A bracket is fixed on the top of the support frame (1), and a guide wheel structure (8) is provided on the fixed body on the top of the bracket. A metal hose is connected to the output end of the air pump (2). The metal hose passes through the guide wheel structure (8) and is installed on a pneumatic rotary joint (41). The inside of the air delivery cavity (42) is connected, and the air delivery cavity (42) passes through the spiral alloy cylinder (62).

3. A drill rod salvaging device in a geological drilling hole according to claim 1, characterized in that: The lubrication structure (61) comprises an alloy cylinder shell (612) fixedly connected to the pneumatic rotary joint (41); an oil chamber (611) is arranged inside the alloy cylinder shell (612) and is injected with mineral oil; an injection port is provided at the top of the alloy cylinder shell (612) and is connected to the oil chamber (611); a sealing plug (615) is embedded in the injection port; a plurality of sponge blocks (614) are fixed to the lower surface of the alloy cylinder shell (612); a plurality of liquid seepage holes (613) are provided at the connection between the sponge blocks (614) and the alloy cylinder shell (612) and are connected to the oil chamber (611).

4. A drill rod salvaging device in a geological drilling hole according to claim 1, characterized in that: The spiral alloy cylinder (62) is provided with a large annular cavity (622) and a small annular cavity (623) which are connected to each other. A blowing hole is provided at the top of the large annular cavity (622) and is connected to the gas delivery cavity (42). A recessed groove (6221) is provided on one side close to the blowing hole. A plurality of sliding blocks (624) are evenly fixed on the lower wall of the small annular cavity (623), and are slidably connected to the double clamping structure (64) via the sliding blocks (624).

5. A drill rod salvaging device in a geological drilling hole according to claim 1, characterized in that: The double clamping structure (64) includes a telescopic sleeve (641) with a plurality of slide grooves (6411), the telescopic sleeve (641) is inserted into the small annular cavity (623) of the spiral alloy cylinder (62), a plurality of sliders (624) are slidably connected to the plurality of slide grooves (6411), the telescopic sleeve (641) is annularly provided with a plurality of movable grooves (643), each movable groove (643) is provided with a clamping mechanism (642), a camera module (645) is fixed to one side of the top of the telescopic sleeve (641) and corresponds to the recessed groove (6221) up and down, and a plurality of air holes (6413) are provided on the top of the telescopic sleeve (641).

6. A drill rod salvaging device in a geological drilling hole according to claim 5, characterized in that: The spiral alloy cylinder (62) comprises a connecting shaft (6422) fixed to the upper inner part of the movable groove (643), a clamping block (6421) is rotatably mounted in the middle of the connecting shaft (6422), torsion springs (6423) are sleeved on both sides of the connecting shaft (6422), and the two ends of the torsion spring (6423) are respectively fixedly connected to the side wall of the movable groove (643) and the clamping block (6421).

7. A drill rod salvaging device in a geological drilling hole according to claim 6, characterized in that: The clamping block (6421) is elastically limited at a forty-five-degree inclination inside the telescopic sleeve (641) by two torsion springs (6423), and the upper part of the telescopic sleeve (641) is inserted into the small annular cavity (623) of the spiral alloy cylinder (62), and the clamping mechanism (642) is elastically limited in the movable groove (643) to remain vertical.

8. The drill rod salvaging device in a geological drilling hole according to claim 1, characterized in that: The camera module (645) comprises a housing, a camera, a lighting lamp, a battery, a wireless module and a control mainboard. The camera, the lighting lamp, the battery and the wireless module are all electrically mounted on the control mainboard. The control mainboard is wirelessly connected to the control display screen (5) via the wireless module. The top of the telescopic sleeve (641) is transparent, and the camera faces the bottom of the telescopic sleeve (641).

9. A drill rod salvaging device in a geological drilling hole according to claim 1, characterized in that: A connecting tube (646) is fixed at the bottom of the telescopic sleeve (641), and a mounting groove is provided on the inner wall of the connecting tube (646). An inflatable bag (647) is fixed in the mounting groove, and a plurality of protrusions (648) are fixed on the outer surface of the inflatable bag (647). A venting joint (644) is fixed at the top of the telescopic sleeve (641), and a ring gasket is connected to the venting joint (644) corresponding to the blowing hole, and an air transmission channel (6412) is provided inside the telescopic sleeve (641), and the air transmission channel (6412) is fixedly connected to the inflatable bag (647) and the venting joint (644).

10. A drill rod salvaging device in a geological drilling hole according to claim 1, characterized in that: The control display screen (5) comprises a housing, a display screen module, a main control circuit board, a button setting module, and a wireless communication module. The main control circuit board is electrically connected to the display screen module, the main control circuit board, the button setting module, the air pump (2), a through-axis stepping motor (32), and the wireless communication module. The main control circuit board is wirelessly connected to the camera module (645) via the wireless communication module.

Images