A hole - expanding device for geotechnical engineering investigation

Abstract

The present invention discloses a geotechnical engineering survey and reaming device, which relates to the technical field of drilling and reaming; it comprises a reaming connector, on which are mounted four swinging expanders, which are used to increase the friction force of local reaming; a bending detection device is mounted inside the reaming connector; the bending detection device is used to detect the displacement of the reaming position; the bending detection device is electrically connected to the four swinging expanders; four rows of telescopic compensation parts are mounted on the reaming connector; the bending detection device can be used to detect the degree of bending of the reaming connector in real time, so as to avoid the displacement of the reaming connector caused by the skewness of the original positioning borehole or the uneven distribution of soil layers during the actual drilling process and cannot be corrected in time; so as to solve the problem that the current geotechnical engineering survey and reaming device is not convenient for automatically compensating and correcting the uneven soil area, and is not convenient for automatically detecting and compensating after the wear of the soil-breaking teeth during the drilling process.

Description

Technical Field

[0001] The invention relates to the technical field of drilling and reaming, in particular to a geotechnical engineering survey and reaming device. Background Art

[0002] Before oil or gas extraction, geotechnical engineering surveys are required. This link is an important basis for ensuring the safe and efficient implementation of low-carbon mining operations. In geotechnical engineering survey and construction work, it is usually necessary to use a reamer installed on the drill pipe. The reaming is used to expand the pilot hole to the designed diameter. For example, in the construction of a raise drilling rig, a three-meter diameter drill bit is required to complete the reaming to meet the subsequent structural installation or engineering requirements. The stable hole wall after reaming is more conducive to in-situ testing, such as static load testing and directional core sampling. The current geotechnical engineering survey reaming device is not convenient for automatically detecting the bending of the reaming line and correcting the hole wall, and it is not convenient for soil quality. Automatic compensation and correction of uneven areas affect the reaming accuracy, and also generate bending stress on components such as drill rods, affecting service life. At the same time, it is not convenient to automatically test the reamer benchmark coaxiality before drilling. Manual tedious testing is not efficient and accurate enough. It is also not convenient to automatically detect the wear of the breaker teeth during the drilling process and make compensation. It is necessary to manually take out the reamer for observation and inspection frequently, affecting construction efficiency. At the same time, the wear degree of the reamer bracket assembly increases after the breaker teeth are worn, reducing service life. A higher carbon footprint will be generated due to mechanical wear and equipment maintenance, resulting in low energy conversion efficiency, further exacerbating energy waste.

[0003] To this end, we propose a geotechnical engineering investigation and expansion device. Summary of the Invention

[0004] The purpose of the present invention is to provide a geotechnical engineering survey and reaming device to solve the problem raised in the above background technology that the current geotechnical engineering survey and reaming device is not convenient for automatically compensating and correcting uneven soil areas, and is not convenient for automatically detecting and compensating for the wear of the breaking teeth during the drilling process.

[0005] To achieve the above object, the present invention provides the following technical solutions: A hole - expanding device for geotechnical engineering investigation, including a hole - expanding connecting piece, on which four swing - expanding pieces are installed. The four swing - expanding pieces are used to increase the local hole - expanding friction force; a bending detection device is installed inside the hole - expanding connecting piece; the bending detection device is used to detect the deviation of the hole - expanding position; the bending detection device is electrically connected to the four swing - expanding pieces; four rows of telescopic compensation pieces are installed on the hole - expanding connecting piece; the four rows of telescopic compensation pieces are respectively used to compensate for wear; four rows of wear pieces are installed on the hole - expanding connecting piece; the four rows of wear pieces are used to detect the degree of wear; a discharge pulling piece is installed on the hole - expanding connecting piece; the discharge pulling piece is used to assist in discharging soil; the hole - expanding connecting piece includes: a hole - expanding connecting pipe, a drill rod and a hole - expanding connecting cylinder. The two ends of the hole - expanding connecting pipe are respectively thread - connected to the drill rods; a drill bit is installed on the front - side drill rod; the rear - side drill rod is used to connect to a drilling rig; the hole - expanding connecting cylinder is fixedly installed on the hole - expanding connecting pipe.

[0006] Preferably, the hole - expanding connecting piece further includes: a sliding cylinder, a feed inclined rod, a compensation inclined rod and an indicator light. The hole - expanding connecting cylinder is fixedly installed with a sliding cylinder through a bracket; four feed inclined rods and compensation inclined rods are fixedly installed on the sliding cylinder; the ends of the four feed inclined rods and compensation inclined rods are respectively installed outside the hole - expanding connecting cylinder; the four feed inclined rods and compensation inclined rods are arranged at intervals; an indicator light is fixedly installed on the sliding cylinder.

[0007] Preferably, the swing - expanding piece includes: an expansion swing arm, a pull spring, a lifting plate and an expansion electromagnet. Expansion swing arms are respectively rotatably installed on the four compensation inclined rods; a row of soil - breaking teeth is respectively arranged on the outer sides of the four expansion swing arms; pull springs are respectively fixedly installed on the inner sides of the four expansion swing arms, and the other ends of the four pull springs are respectively connected to the inner side of the sliding cylinder; lifting plates are respectively fixedly installed at the ends of the four expansion swing arms; the lifting plate is in an "L" - shaped structure; four expansion electromagnets are fixedly embedded on the sliding cylinder, and the four expansion electromagnets are respectively used to magnetically attract the lifting plate.

[0008] Preferably, the bending detection device includes: a bending test rope, a power - connecting column, a series of contacts and a power - connecting tile. The two ends of the bending test rope are respectively fixedly installed inside the two drill rods; the bending test rope has elasticity; a power - connecting column is fixedly installed in the middle of the bending test rope; four power - connecting tiles are fixedly installed inside the hole - expanding connecting pipe, and there are intervals between the four power - connecting tiles; the power - connecting column is aligned with the four power - connecting tiles; the power - connecting column is used to contact the power - connecting tiles, and the four power - connecting tiles are respectively electrically connected to the four expansion electromagnets in the same direction; three series of contacts are embedded at the end of the power - connecting column; the power - connecting column is insulated from the three series of contacts.

[0009] Preferably, the bending detection device further includes: an on-site power connection piece, and three on-site power connection pieces are fixedly installed inside the hole-expanding connecting pipe; the three on-site power connection pieces are elastically fitted to the three series-connected contacts respectively; the three series-connected contacts, the three on-site power connection pieces and the indicator light are connected in series to the power supply.

[0010] Preferably, the telescopic compensation member includes: compensation teeth, sliding limit grooves, limit connecting rods and compensation electromagnets. A row of compensation teeth are slidably inserted on each of the four feed inclined rods; sliding limit grooves are formed on the compensation teeth; a limit connecting rod is slidably installed in the sliding limit groove; the limit connecting rod is fixedly installed inside the feed inclined rod; a compensation electromagnet is fixedly installed inside the limit connecting rod; the compensation electromagnet is used to magnetically attract the compensation teeth to extend; the compensation teeth are used to compensate the worn parts.

[0011] Preferably, the worn parts include: feed teeth, wear needles and push columns. A row of feed teeth are fixedly installed on each of the four feed inclined rods; a row of compensation teeth are respectively located at the intervals of the row of feed teeth; a wear needle is slidably inserted inside the feed teeth, and a push column is fixedly installed at the tail of the wear needle; the push column is slidably installed inside the feed teeth; the rotation radius of the row of feed teeth is smaller than the rotation radius of the row of compensation teeth in one circle.

[0012] Preferably, the worn parts further include: power connection rings and push springs. A power connection ring is fixedly installed at the front end of the push column; a power connection ring is fixedly installed inside the feed teeth, and the two power connection rings are aligned; the two power connection rings are respectively electrically connected to the compensation electromagnets on the same side; the wear resistance of the wear needle is less than that of the feed teeth; a push spring is fixedly installed at the tail of the push column, and the push spring is located inside the feed teeth; the end of the push spring abuts against the feed inclined rod.

[0013] Preferably, the discharge pulling member includes: a limit hexagonal column and an anti-detachment electromagnet. The limit hexagonal column is fixedly installed on the hole-expanding connecting pipe; the limit hexagonal column has a hexagonal structure; an anti-detachment electromagnet is fixedly installed on the side surface of the limit hexagonal column.

[0014] Preferably, the discharge pulling member further includes: a soil discharging impeller and a pulling rope. A soil discharging impeller is slidably inserted on the limit hexagonal column, and the anti-detachment electromagnet magnetically attracts the soil discharging impeller; two pulling ropes are fixedly installed on the side surface of the soil discharging impeller.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The bending detection device adopted by the present invention can be used to detect the bending degree of the reaming connector in real time, avoiding the displacement of the reaming connector during actual drilling caused by the skew of the original positioning drilling or uneven soil layer distribution and being unable to be corrected in time. Once the reaming connector is bent, it will directly affect the drilling accuracy. When the reaming connecting pipe and the drill pipe are skewed and bent, the expansion swing arm is automatically controlled to expand for local strengthening and soil breaking compensation work, which can ensure the straightness of drilling while realizing local soil breaking compensation and automatic control without manual assistance. The bending detection device can be used to detect the initial position accuracy of the electrical connection post, that is, to give a prompt before the staff drills a hole, ensuring the reaming drilling accuracy and also affecting the initial concentricity of the electrical connection post and the electrical connection tile, thus affecting the detection accuracy.

[0017] Using wear parts as the main drilling structure can ensure smooth drilling and automatically realize the detection of drilling wear. It can avoid being used in a worn state for a long time and causing excessive wear to the feed inclined rod, better control the service life of the feed teeth, avoid overuse. At the same time, this structure uses feed teeth that can automatically control the adjacent compensation teeth to extend after wear for compensation work, and can automatically control compensation during drilling without the need for the cumbersome operation of manually removing this structure from the drill hole for inspection, ensuring timely replacement, guaranteeing the drilling efficiency, ensuring the service life of this structure, effectively avoiding the situation of manual forgetting to replace the feed teeth, significantly reducing the carbon emissions of the exploration operation while achieving efficient reaming, and promoting the development of geotechnical engineering towards low-carbon and green directions.

[0018] Using the discharge pulling part can facilitate the discharge of the reamed soil and rock, and at the same time does not affect the real-time drilling of this structure. At the same time, by using the inclined blades on the soil discharge impeller, it is more convenient to push out the soil and rock subsequently, and the operation is simple and convenient. Brief Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of a reaming device for geotechnical engineering exploration according to the present invention;

[0020] Figure 2 It is a cross-sectional view of the internal structure of a reaming device for geotechnical engineering exploration according to the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the reaming connector according to the present invention;

[0022] Figure 4 It is a schematic diagram of the installation position of the indicator light according to the present invention;

[0023] Figure 5 For the present invention Figure 2 The enlarged view of the structure of area B in it;

[0024] Figure 6 For the present invention Figure 2Enlarged view of the structure of region C;

[0025] Figure 7 Schematic diagram of the position of the on-site power connection piece of the present invention;

[0026] Figure 8 Cross-sectional view of the structure of the discharge pulling piece of the present invention;

[0027] Figure 9 For the present invention Figure 8 Enlarged view of the structure of region E;

[0028] Figure 10 For the present invention Figure 8 Enlarged view of the structure of region F;

[0029] Figure 11 Schematic diagram of the structure of the telescopic compensation piece of the present invention;

[0030] Figure 12 Schematic diagram of the installation position of the soil discharging impeller of the present invention.

[0031] In the figure: 1. Hole-expanding connecting piece; 101. Hole-expanding connecting pipe; 102. Drill pipe; 103. Hole-expanding connecting cylinder; 104. Sliding cylinder; 1041. Feed inclined rod; 1042. Compensation inclined rod; 1043. Indicator light; 2. Swing expansion piece; 201. Expansion swing arm; 202. Tension spring; 203. Lifting plate; 204. Expansion electromagnet; 3. Bending detection device; 301. Bending test rope; 302. Power connection column; 3021. Series contact; 303. Power connection tile; 304. On-site power connection piece; 4. Telescopic compensation piece; 401. Compensation tooth; 4011. Sliding limit groove; 402. Limit connecting rod; 403. Compensation electromagnet; 5. Wear part; 501. Feed tooth; 502. Wear needle; 503. Propulsion column; 504. Power connection ring; 505. Push spring; 6. Discharge pulling piece; 601. Limit hexagonal column; 602. Anti-detachment electromagnet; 603. Soil discharging impeller; 604. Pulling rope. Detailed implementation manner

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1: Please refer to Figures 1 to 12 Shown as follows:

[0034] The present invention provides a technical solution: a hole expanding device for geotechnical engineering investigation, which includes a hole expanding connector 1. Four swing expanding members 2 are installed on the hole expanding connector 1, and the four swing expanding members 2 are used to increase the local hole expanding friction force. A bending detection device 3 is installed inside the hole expanding connector 1. The bending detection device 3 is used to detect the deviation of the hole expanding position. The bending detection device 3 is electrically connected to the four swing expanding members 2. Four rows of telescopic compensation members 4 are installed on the hole expanding connector 1. The four rows of telescopic compensation members 4 are respectively used to compensate for wear. Four rows of wear members 5 are installed on the hole expanding connector 1. The four rows of wear members 5 are used to detect the degree of wear. A discharge pulling member 6 is installed on the hole expanding connector 1. The discharge pulling member 6 is used to assist in discharging soil. The hole expanding connector 1 includes: a hole expanding connecting pipe 101, a drill pipe 102 and a hole expanding connecting cylinder 103. Both ends of the hole expanding connecting pipe 101 are respectively threadedly connected to the drill pipe 102. A drill bit is installed on the front drill pipe 102. The rear drill pipe 102 is used to connect to a drilling rig. The hole expanding connecting cylinder 103 is fixedly installed on the hole expanding connecting pipe 101.

[0035] Among them, the reaming connection member 1 also includes: a sliding cylinder 104, a feed inclined rod 1041, a compensation inclined rod 1042 and an indicator light 1043. The sliding cylinder 104 is fixedly installed on the reaming connection cylinder 103 through a bracket; four feed inclined rods 1041 and compensation inclined rods 1042 are fixedly installed on the sliding cylinder 104; the ends of the four feed inclined rods 1041 and compensation inclined rods 1042 are respectively installed on the outside of the reaming connection cylinder 103; the four feed inclined rods 1041 and compensation inclined rods 104 2 intervals; an indicator light 1043 is fixedly installed on the sliding cylinder 104; the swing expansion member 2 includes: an expansion swing arm 201, a tension spring 202, an upper lifting plate 203 and an expansion electromagnet 204, and the four compensation inclined rods 1042 are respectively rotatably mounted with the expansion swing arm 201; the outer sides of the four expansion swing arms 201 are respectively provided with a row of soil breaking teeth; the inner sides of the four expansion swing arms 201 are respectively fixedly installed with a tension spring 202, and the other ends of the four tension springs 202 are respectively connected to the sliding cylinder 104 Inside; the ends of the four expansion swing arms 201 are respectively fixedly mounted with lifting plates 203; the lifting plates 203 are of an "L"-shaped structure; four expansion electromagnets 204 are fixedly embedded in the sliding cylinder 104, and the four expansion electromagnets 204 are respectively used to magnetically attract the lifting plates 203; the bending detection device 3 includes: a bending test rope 301, a connection column 302, a series contact 3021 and a connection shoe 303, and the ends of the bending test rope 301 are respectively fixedly mounted inside the two drill rods 102; The bending test rope 301 has elasticity; a connection post 302 is fixedly mounted in the middle of the bending test rope 301; four connection shoes 303 are fixedly mounted on the inner side of the expansion connection tube 101, with spaces between the four connection shoes 303; the connection post 302 is aligned with the four connection shoes 303; the connection post 302 is used to contact the connection shoes 303, and the four connection shoes 303 are respectively electrically connected to the four expansion electromagnets 204 in the same direction; three series contacts 3021 are embedded in the end of the connection post 302;The power connection post 302 is insulated from the three series-connected contacts 3021. The bending detection device 3 can be used to detect the bending degree of the hole-expanding connector 1 in real time, avoiding the displacement of the hole-expanding connector 1 during the actual hole-expanding movement due to the skew of the original positioning drill hole or uneven soil layer distribution. Once the hole-expanding connector 1 is bent, it will directly affect the drilling accuracy. This structure can detect all-roundly when the hole-expanding connecting pipe 101 and the drill pipe 102 are skewed and bent, automatically control the expansion of the expansion swing arm 201, and perform local strengthening and soil-breaking compensation work. While ensuring the drilling straightness, this structure can achieve local soil-breaking compensation, avoid excessive hole-expanding diameter and cause hole wall deviation, and at the same time, there is no need to stop drilling and real-time correction work can be carried out to prevent affecting the hole-expanding accuracy. At the same time, this structure can be automatically controlled without manual assistance, avoiding the time-consuming and laborious manual real-time detection, reducing the influence of uneven soil layer distribution on hole expansion, and also avoiding the influence of the service life of the hole-expanding connecting pipe 101 and the drill pipe 102 due to long-term bending during skew drilling. The structure is more reasonable. When this structure is controlled by the drill rig for drilling, the number of the rear drill pipes 102 is determined by the hole-expanding depth and can be added according to requirements. Once the soil distribution changes, at this time, the feed tooth 501 is easily offset to the side of the softer soil layer under the extrusion of the harder soil layer. When the straightness of the original drill hole is poor, under the guidance of the original drill hole, the sliding cylinder 104 will also be guided to displace. At this time, it is difficult for the hole-expanding connecting pipe 101 and the drill pipe 102 to maintain linear displacement. Because the hole-expanding connecting pipe 101 and the drill pipe 102 are relatively long and have a certain bending deformation range, the hole-expanding connecting pipe 101 and the drill pipe 102 are prone to bending deformation. The power connection post 302 in the middle of the bending test rope 301 is no longer concentric in the middle of the hole-expanding connecting pipe 101. When the bending degree exceeds the standard, the power connection post 302 will touch the power connection tile 303. At this time, the four power connection tiles 303 can be rotated continuously by the hole-expanding connecting pipe 101, and the expansion electromagnet 204 on the same side as the power connection tile 303 is always energized in real time to control the expansion swing arm 201 to expand outwards, stretching the tension spring 202. After the soil-breaking teeth on the expansion swing arm 201 expand, the rotation radius is greater than that of the feed tooth 501. At this time, the hole wall at the inwardly bent part of the hole wall or the hole wall on the harder side can be compensated for soil breaking to improve the soil-breaking efficiency here for compensation. During the daily drilling work, the expansion swing arm 201 is in a retracted state, which will not interfere with hole expansion and will not cause excessive wear.

[0036] Among them, the bending detection device 3 further includes: an in-position power connection piece 304, and three in-position power connection pieces 304 are fixedly installed inside the hole-expanding connecting pipe 101; the three in-position power connection pieces 304 are respectively elastically fitted to the three series contacts 3021; the three series contacts 3021, the three in-position power connection pieces 304 and the indicator light 1043 are connected in series to the power supply. The bending detection device 3 can be used to detect the initial position accuracy of the power connection column 302, that is, to give a prompt before the staff drills a hole, so as to avoid the bending of the sliding cylinder 104 relative to the drill pipe 102 in the initial state, which cannot maintain concentricity, will directly affect the hole-expanding drilling accuracy, and will also affect the initial concentricity of the power connection column 302 and the power connection tile 303, affecting the detection accuracy. If the power connection column 302 and the hole-expanding connecting pipe 101 are no longer concentric and deviate, at this time, the three in-position power connection pieces 304 cannot simultaneously fit the three series contacts 3021, and at this time, the indicator light 1043 will be powered off for prompting.

[0037] Among them, the telescopic compensation component 4 includes: compensation teeth 401, sliding limit grooves 4011, limit connecting rods 402, and compensation electromagnets 403. A row of compensation teeth 401 are respectively slidably inserted on the four feed inclined rods 1041; sliding limit grooves 4011 are formed on the compensation teeth 401; a limit connecting rod 402 is slidably installed in the sliding limit groove 4011; the limit connecting rod 402 is fixedly installed inside the feed inclined rod 1041; a compensation electromagnet 403 is fixedly installed inside the limit connecting rod 402; the compensation electromagnet 403 is used to magnetically attract the compensation teeth 401 to extend; the compensation teeth 401 are used to compensate the worn component 5; the worn component 5 includes: feed teeth 501, wear needles 502, and propulsion columns 503. A row of feed teeth 501 are respectively fixedly installed on the four feed inclined rods 1041; a row of compensation teeth 401 are respectively located at the intervals of a row of feed teeth 501; a wear needle 502 is slidably inserted inside the feed tooth 501, and a propulsion column 503 is fixedly installed at the tail of the wear needle 502; the propulsion column 503 is slidably installed inside the feed tooth 501; the rotation radius of a row of feed teeth 501 is smaller than the rotation radius of a row of compensation teeth 401; the worn component 5 further includes: an electric connection ring 504 and a push spring 505. A propulsion column 503 is fixedly installed at the front end of the electric connection ring 504; an electric connection ring 504 is fixedly installed inside the inner side of the feed tooth 501, and the two electric connection rings 504 are aligned; the two electric connection rings 504 are respectively electrically connected to the compensation electromagnets 403 on the same side; the wear resistance strength of the wear needle 502 is less than that of the feed tooth 501; a push spring 505 is fixedly installed at the tail of the propulsion column 503, and the push spring 505 is located inside the inner side of the feed tooth 501; the end of the push spring 505 abuts against the feed inclined rod 1041. Using the worn component 5 as the main drilling structure can ensure smooth drilling while automatically realizing the detection of drilling wear, can avoid overwear of the feed inclined rod 1041 caused by long-term use in a worn state, can better control the service life of the feed teeth 501, avoid overuse. At the same time, this structure uses the feed teeth 501 to automatically control the adjacent compensation teeth 401 to extend after wear, can perform compensation work, can automatically control compensation during drilling, without the need for manual and cumbersome removal of this structure from the drill hole for inspection, can ensure timely replacement, ensure drilling efficiency, the structure is more reasonable, ensure the service life of this structure, effectively avoid manual forgetting to replace the feed teeth 501, can be more suitable for the situation where the local feed teeth 501 are worn excessively, and also avoid the influence of the wear of the local feed teeth 501 on the overall feed accuracy of this structure. After the feed teeth 501 are worn, once worn excessively and worn to the wear needle 502, the wear speed of the wear needle 502 is also faster. At this time, the two electric connection rings 504 can be adhered to each other to realize conductive control of the adjacent compensation electromagnet 403 to magnetically attract the inner side of the sliding limit groove 4011, that is, magnetically attract the compensation teeth 401 to extend outwards for compensation work.

[0038] Embodiment 2. On the basis of Embodiment 1, the discharge pulling member 6 includes: a limiting hexagonal column 601 and an anti - detachment electromagnet 602. The limiting hexagonal column 601 is fixedly installed on the hole - expanding connecting pipe 101; the limiting hexagonal column 601 has a hexagonal structure; the anti - detachment electromagnet 602 is fixedly installed on the side of the limiting hexagonal column 601; the discharge pulling member 6 further includes: a soil - discharging impeller 603 and a pulling rope 604. The length of the pulling rope 604 is set according to requirements. The soil - discharging impeller 603 is slidably inserted on the limiting hexagonal column 601, and the anti - detachment electromagnet 602 magnetically attracts the soil - discharging impeller 603; the outer side of the soil - discharging impeller 603 is of a cylindrical structure; two pulling ropes 604 are fixedly installed on the side of the soil - discharging impeller 603. Using the discharge pulling member 6 can facilitate the discharge of the rock and soil after hole - expanding, and at the same time does not affect the real - time drilling of this structure. At the same time, by using the inclined blades on the soil - discharging impeller 603, it can be more convenient to push out the rock and soil subsequently. The operation is simple and convenient. Tools such as electric hoists can be used for soil - discharging work, reducing the number of movements of the sliding cylinder 104 in the hole wall, reducing wear, and being more suitable for long - distance hole - expanding. The soil - discharging impeller 603 can be easily screwed into the rock and soil by using the inclined surface structure of its blades, and at the same time does not affect the drilling movement. Tools such as electric hoists can be used to pull the pulling rope 604 to drive the soil - discharging impeller 603 to push out the rock and soil from the hole - expanding hole. The cylindrical structure of the soil - discharging impeller 603 can slide in the hole wall of the hole - expanding hole.

[0039] The working principle of this embodiment is as follows: when the drill rod 102 and the reaming connecting tube 101 are drilling, the reaming connecting tube 101 and the drill rod 102 keep moving in a straight line, and the bending test rope 301 is in a position concentric with the reaming connecting tube 101. Once the soil distribution changes, the feed tooth 501 is easily squeezed by the harder soil layer and deviates to the side of the softer soil layer. When the straightness of the original drill hole is not good, the sliding cylinder 104 will also be guided to move under the guidance of the original drill hole. At this time, it is difficult for the reaming connecting tube 101 and the drill rod 102 to maintain a straight displacement. The reaming connecting tube 101 and the drill rod 102 have a certain bending deformation range because of their long length. When the reaming connecting tube 101 and the drill rod 102 are easily bent, the bending test rope 301 is easy to cause bending deformation. The two ends of the rope 301 are respectively concentrically mounted at the centers of the two drill rods 102. The bending test rope 301 itself also has elastic force, and the bending test rope 301 can maintain a straight line. At this time, the power post 302 in the middle of the bending test rope 301 is no longer concentric in the middle of the reaming connecting pipe 101. When the bending degree exceeds the standard, the power post 302 will touch the power tile 303. At this time, the four power tiles 303 can be driven by the reaming connecting pipe 101 to rotate continuously, and the expansion electromagnet 204 on the same side of the power tile 303 is kept energized in real time to control the expansion swing arm 201 to expand outward, lengthen the tension spring 202, and the rotation radius of the earth-breaking teeth on the expansion swing arm 201 after expansion is greater than the feed teeth 501. At this time, the hole wall or the harder part of the hole wall that bends inward is The side hole wall can be compensated for breaking the ground, improving the ground breaking efficiency here, to compensate, when the power post 302 is concentric with the reaming connecting tube 101, the three in-situ power plates 304 elastically fit the power post 302 respectively, on the contrary, if the power post 302 is no longer concentric with the reaming connecting tube 101 and an offset occurs, the three in-situ power plates 304 cannot fit the three series contacts 3021 at the same time, and the indicator light 1043 will be powered off to prompt, after the feed tooth 501 is worn, once it is worn excessively and wears to the wear needle 502, the push spring 505 can push the propulsion column 503 to accelerate the push out of the wear needle 502, and the wear speed of the wear needle 502 is also faster, and the two power rings 504 can fit together to achieve The conductive control magnets 403 adjacent to the compensation magnets 403 are magnetically attracted to the inner side of the sliding limit groove 4011, that is, the compensation teeth 401 are magnetically extended outward to perform compensation work. The exposed wear needles 502 after wear are also more convenient for staff to observe until they are worn to a warning level. When the sliding cylinder 104 moves, as the drilling progresses, the drill rod 102 will drive the limiting hexagonal column 601 to move and rotate, thereby controlling the soil discharge impeller 603 to follow the rotation. The inclined blade structure can be used to easily screw into the rock and soil without affecting the drilling movement. When a lot of rock and soil is discharged from the right side of the soil discharge impeller 603, the anti-slip electromagnet 602 can be controlled to cut off the power. At this time, the pulling rope 604 can be pulled by an electric hoist or other equipment to drive the soil discharge impeller 603 to push the rock and soil out of the expanded hole.

[0040] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0041] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A geotechnical engineering survey hole-reaming device, comprising a hole-reaming connector (1), on which four swing expansion members (2) are mounted, characterized in that: The four swing expansion members (2) are used to increase the friction force of local hole expansion; a bending detection device (3) is installed inside the hole expansion connector (1); the bending detection device (3) is used to detect the displacement of the hole expansion position; the bending detection device (3) is electrically connected to the four swing expansion members (2); Four rows of telescopic compensating members (4) are mounted on the hole-expanding connecting member (1); the four rows of telescopic compensating members (4) are respectively used to compensate for wear; four rows of wear members (5) are mounted on the hole-expanding connecting member (1); the four rows of wear members (5) are used to detect the degree of wear; A discharge pulling member (6) is installed on the hole-expanding connecting member (1); the discharge pulling member (6) is used to assist in discharging soil; The reaming connection piece (1) comprises: a reaming connection pipe (101), a drill rod (102) and a reaming connection cylinder (103); the drill rod (102) is threadedly connected to both ends of the reaming connection pipe (101); a drill bit is installed on the front side of the drill rod (102); the rear side of the drill rod (102) is used to connect to a drilling rig; the reaming connection cylinder (103) is fixedly installed on the reaming connection pipe (101); The reaming connection member (1) further comprises: a sliding cylinder (104), a feed bevel rod (1041), a compensation bevel rod (1042) and an indicator light (1043); the sliding cylinder (104) is fixedly mounted on the reaming connection cylinder (103) via a bracket; four feed bevel rods (1041) and compensation bevel rods (1042) are fixedly mounted on the sliding cylinder (104); the ends of the four feed bevel rods (1041) and compensation bevel rods (1042) are respectively mounted on the outside of the reaming connection cylinder (103); the four feed bevel rods (1041) and compensation bevel rods (1042) are spaced apart; the indicator light (1043) is fixedly mounted on the sliding cylinder (104); The swing expansion member (2) comprises: an expansion swing arm (201), a tension spring (202), an upper lifting plate (203) and an expansion electromagnet (204); the expansion swing arm (201) is rotatably mounted on each of the four compensation inclined rods (1042); a row of soil-breaking teeth are respectively provided on the outer sides of the four expansion swing arms (201); a tension spring (202) is respectively fixedly mounted on the inner sides of the four expansion swing arms (201), and the other ends of the four tension springs (202) are respectively connected to the inner sides of the sliding cylinder (104); an upper lifting plate (203) is respectively fixedly mounted on the ends of the four expansion swing arms (201); the upper lifting plate (203) is an L-shaped structure; four expansion electromagnets (204) are fixedly embedded on the sliding cylinder (104), and the four expansion electromagnets (204) are respectively used to magnetically attract the upper lifting plate (203).

2. The geotechnical engineering survey and hole enlarging device according to claim 1, characterized in that: The bending detection device (3) comprises: a bending test rope (301), an electrical connection post (302) and an electrical connection tile (303), wherein both ends of the bending test rope (301) are fixedly mounted inside two drill rods (102); the bending test rope (301) has elastic force; a electrical connection post (302) is fixedly mounted in the middle of the bending test rope (301); four electrical connection tiles (303) are fixedly mounted inside the reaming connecting pipe (101), and intervals are provided between the four electrical connection tiles (303); the electrical connection post (302) is aligned with the four electrical connection tiles (303); the electrical connection post (302) is used to contact the electrical connection tiles (303), and the four electrical connection tiles (303) are respectively electrically connected to four expansion electromagnets (204) in the same direction.

3. The geotechnical engineering investigation and hole enlarging device according to claim 2, characterized in that: The bending detection device (3) further comprises: in-situ power connection plates (304), three in-situ power connection plates (304) being fixedly mounted on the inner side of the reaming connecting tube (101); the three in-situ power connection plates (304) respectively elastically fit the power connection posts (302); and the power connection posts (302), the three in-situ power connection plates (304) and the indicator light (1043) are connected in series to a power supply.

4. The geotechnical engineering survey and hole-reaming device according to claim 1, characterized in that: The telescopic compensating member (4) comprises: compensating teeth (401), a sliding limiting groove (4011), a limiting connecting rod (402) and a compensating electromagnet (403); a row of compensating teeth (401) is slidably inserted on each of the four feed inclined rods (1041); a sliding limiting groove (4011) is provided on the compensating teeth (401); a limiting connecting rod (402) is slidably installed in the sliding limiting groove (4011); the limiting connecting rod (402) is fixedly installed inside the feed inclined rod (1041); a compensating electromagnet (403) is fixedly installed inside the limiting connecting rod (402); the compensating electromagnet (403) is used to magnetically attract the compensating teeth (401) to extend; the compensating teeth (401) are used to compensate for the wear parts (5).

5. The geotechnical engineering investigation and hole enlarging device according to claim 4, characterized in that: The wearable part (5) comprises: a feed tooth (501), a wear needle (502) and a propulsion column (503); a row of feed teeth (501) is fixedly mounted on each of the four feed inclined rods (1041); a row of compensation teeth (401) is located at the intervals between the rows of feed teeth (501); a wear needle (502) is slidably inserted into the interior of the feed teeth (501), and a propulsion column (503) is fixedly mounted at the tail end of the wear needle (502); the propulsion column (503) is slidably mounted inside the feed teeth (501); the rotation radius of a row of feed teeth (501) is smaller than the rotation radius of a circle of compensation teeth (401).

6. The geotechnical engineering investigation and hole enlarging device according to claim 5, characterized in that: The wear part (5) further comprises: an electric ring (504) and a push spring (505); the front end of the propulsion column (503) is fixedly mounted with the electric ring (504); the inner side of the feed tooth (501) is fixedly mounted with the electric ring (504), and the two electric rings (504) are aligned; the two electric rings (504) are respectively electrically connected to the compensation electromagnet (403) on the same side; the wear resistance of the wear needle (502) is less than that of the feed tooth (501); the rear end of the propulsion column (503) is fixedly mounted with the push spring (505), and the push spring (505) is located on the inner side of the feed tooth (501); the end of the push spring (505) is attached to the feed inclined rod (1041).

7. The geotechnical engineering investigation and reaming device according to claim 1, characterized in that: The discharge pulling member (6) comprises: a limiting hexagonal column (601) and an anti-slipping electromagnet (602); the limiting hexagonal column (601) is fixedly mounted on the reaming connecting pipe (101); the limiting hexagonal column (601) is a hexagonal structure; and the anti-slipping electromagnet (602) is fixedly mounted on the side of the limiting hexagonal column (601).

8. The geotechnical engineering investigation and hole enlarging device according to claim 7, characterized in that: The discharge pulling member (6) further comprises: a soil discharge impeller (603) and a pulling rope (604); the soil discharge impeller (603) is slidably plugged into the limiting hexagonal column (601), and the anti-slip electromagnet (602) magnetically attracts the soil discharge impeller (603); and two pulling ropes (604) are fixedly installed on the side of the soil discharge impeller (603).

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