A reaming device for geotechnical engineering investigation

Abstract

The application discloses a reaming device for geotechnical engineering investigation and relates to the technical field of geotechnological investigation equipment. The reaming device for geotechnical engineering investigation comprises a carrier, a track, a lifting platform, a lifting unit, a drill pipe, a driving disc, a guiding unit, a slag removal unit and a driving unit. The reaming device for geotechnical engineering investigation reduces the pure drilling time ratio to 70%, the cooling liquid realizes efficient cooling and conveying, the cutter replacement frequency is reduced, the continuous operation time of the hard rock layer is prolonged to 8 hours, the guiding unit controls the drilling deflection angle within 1°, the reaming direction accuracy error is ensured to be less than 3 cm, the liquid injection unit reuses the power of the driving unit, the energy saving of the independent hydraulic pump is 30%, the device realizes three-dimensional cooperation of power, slag removal and cooling, and solves the three stubborn problems of slag removal blockage, drilling deviation and cutter burning in the rock and soil reaming operation.

Description

Technical Field

[0001] This invention relates to the field of geotechnical exploration equipment technology, specifically to a borehole enlargement device for geotechnical engineering exploration. Background Technology

[0002] Geotechnical engineering investigation requires an accurate understanding of the distribution, properties, and variation patterns of underground soil and rock masses to provide a reliable basis for engineering design and construction. By enlarging the borehole, a more comprehensive understanding of the internal conditions of the soil and rock mass can be obtained, reducing blind spots caused by insufficient borehole diameter. Furthermore, borehole enlargement can be combined with other investigation methods, such as ground-penetrating radar and sonic logging, to improve the accuracy and depth of the investigation.

[0003] Conventional reaming devices rely on drilling rod internal or external mud circulation for cuttings removal. In loose sand and cohesive soil layers, drill cuttings easily clog the borehole, leading to repeated cutting, increased energy consumption, and less than 50% of the time spent on pure drilling. There is a lack of active guidance mechanism below the drill bit, and the reaming tool experiences uneven radial force in alternating soft and hard formations, often resulting in a deviation angle exceeding 3°. During cutting, cooling of the cutting part relies on manual water injection or a separate pump station, and the coolant cannot accurately cover the tool and the soil-rock interface. In hard rock operations, the tool temperature rises above 200°C, and continuous working time is only 3-4 hours. The cuttings removal, cooling, and reaming systems are separate, resulting in redundant power sources, high energy consumption, and cumbersome operation procedures. Therefore, existing technologies for reaming in geotechnical engineering exploration are prone to three major problems: cuttings blockage, borehole misalignment, and tool burnout. To address the shortcomings of existing technologies, this invention provides a reaming device for geotechnical engineering exploration to solve the above problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a borehole enlargement device for geotechnical engineering exploration. Through an integrated design of "power-slag removal-cooling-guiding," it achieves efficient slag removal, precise guidance, efficient cooling, and optimized energy efficiency. This device is particularly suitable for loose sand layers and highly cohesive soil layers, fundamentally overcoming the three major technical challenges in geotechnical borehole enlargement: "slag blockage, borehole misalignment, and tool burnout," providing highly reliable equipment support for major engineering exploration.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a borehole enlargement device for geotechnical engineering exploration, comprising a carrier, a track, a lifting platform, a lifting unit, a drill pipe, a drive disc, a guide unit, a slag discharge unit, and a drive unit;

[0006] The track is set on the carrier;

[0007] The lifting platform is slidably connected to the track;

[0008] The lifting unit is installed on the track and is used to control the lifting platform's movement.

[0009] A drill pipe is fixedly connected to the lifting platform, and a shaft seat is fixedly connected to the bottom of the drill pipe;

[0010] A driving disc is rotatably connected to the bottom of the shaft seat, and a plurality of sets of reaming cutting parts are installed on the driving disc;

[0011] A guide unit is arranged at the bottom of the driving disc and used for reaming guidance;

[0012] A residue discharging unit is arranged at the side of the drill pipe, and the residue discharging unit comprises a conveying pipe, a screw rod and a discharging pipe;

[0013] The conveying pipe is fixedly connected to the drill pipe and the lifting platform;

[0014] The screw rod is rotatably connected to the inside of the conveying pipe, and the bottom of the screw rod is arranged above the driving disc;

[0015] The discharging pipe is arranged at the side of the conveying pipe;

[0016] A driving unit is arranged on the lifting platform and used for providing power to the driving disc and the screw rod.

[0017] Preferably, the driving unit comprises a second motor, a main shaft, a first gear, a transmission rod and a second gear;

[0018] The second motor is arranged on the lifting platform;

[0019] The main shaft is arranged at the output end of the second motor, and the bottom of the main shaft penetrates through the drill pipe and the shaft seat and is fixedly connected to the driving disc;

[0020] The first gear is arranged on the main shaft;

[0021] The transmission rod is arranged on the screw rod;

[0022] The second gear is arranged on the transmission rod and engaged with the first gear.

[0023] Preferably, a multifunctional boss is fixedly connected to the shaft seat, a collection groove is arranged on the multifunctional boss, and the bottom of the screw rod is located in the collection groove.

[0024] Preferably, a liquid injection unit is arranged on the drill pipe, and the liquid injection unit comprises a pump seat, a main transmission screw rod, a driven screw rod, a liquid inlet pipe and a liquid outlet pipe;

[0025] The pump seat is arranged on the drill pipe;

[0026] The main transmission screw rod is arranged on the main shaft and located in the inside of the pump seat;

[0027] The driven screw rod is arranged in the inside of the pump seat and engaged with the main transmission screw rod;

[0028] The liquid inlet pipe is arranged at the top of the pump seat;

[0029] The drain pipe is arranged at the bottom of the pump base.

[0030] Preferably, the drain pipe is fixedly connected with the multifunctional boss, a plurality of groups of drain grooves are arranged in the multifunctional boss, and the plurality of groups of drain grooves are aligned with the reaming and cutting parts.

[0031] Preferably, the guide unit comprises a guide shaft, a clamping column, a sleeve seat and a fixing pin.

[0032] The guide shaft is arranged at the bottom of the driving disc.

[0033] The clamping column is fixedly connected to the guide shaft.

[0034] The sleeve seat is fixedly connected to the driving disc, and the clamping column is movably clamped in the sleeve seat.

[0035] The fixing pin is threadedly connected to the inside of the sleeve seat and the clamping column.

[0036] Preferably, the lifting unit comprises a first motor, a lead screw and a sliding table.

[0037] The first motor is arranged at the bottom of the track.

[0038] The lead screw is arranged at the output end of the first motor.

[0039] The sliding table is fixedly connected to the lifting table and slidably connected to the inside of the track, and the sliding table is threadedly connected with the lead screw.

[0040] Preferably, a guide rod is fixedly connected to the inside of the track, and the sliding table is slidably connected to the guide rod.

[0041] Preferably, the rotation speed ratio of the first gear and the second gear is 1:1.2.

[0042] Preferably, the carrier is provided with a power supply for supplying power to the lifting unit and the driving unit, and the carrier is provided with a control panel for controlling parameters of the lifting unit and the driving unit.

[0043] Preferably, the bottom of the carrier is provided with a walking wheel, the side of the carrier is provided with a tow hook, and the inside of the carrier is provided with a storage cavity.

[0044] The application discloses a reaming device for geotechnical engineering investigation.

[0045] 1. The rock-soil engineering investigation hole enlarging device, the slag removal system reduces the pure drilling time ratio to 70%, the cooling liquid realizes efficient cooling and conveying, reduces the cutter replacement frequency, the hard rock layer continuous operation time is prolonged to 8 hours, the guiding unit controls the drilling deflection angle within 1 °, ensures that the hole enlarging direction accuracy error is less than 3 cm, the liquid injection unit multiplexes the driving unit power, saves energy by 30% than independent hydraulic pump, the device realizes the three-dimensional cooperation of power, slag removal and cooling, solves the three big stubborn diseases of "slag removal blockage, drilling skew and cutter burning" in rock-soil hole enlarging operation, the technical indexes of the device all exceed the current industry standard, and the device is especially suitable for precise rock-soil investigation scenes such as high railway foundation and reservoir dam foundation.

[0046] 2. The rock-soil engineering investigation hole enlarging device adopts an integrated power transmission system, the driving unit synchronously drives the driving disc, the slag removal unit and the liquid injection unit, avoids the problem of power source redundancy in traditional devices, reduces energy consumption, has remarkable energy-saving effect, reduces the energy consumption and overall operation cost of the device, and through optimizing the gear ratio of the driving unit gear set, the rotation speed of the slag removal screw rod is accurately matched with the cutting rotation speed, the drill cuttings are ensured to be discharged in time and efficiently, and the device can maintain efficient and stable hole enlarging performance in loose sand layer and cohesive soil layer working scenes.

[0047] 3. The rock-soil engineering investigation hole enlarging device, through the design of the multifunctional boss, the cooling and slag removal effect of the device is further enhanced, the multifunctional boss serves as the hub of slag removal and cooling, the three-dimensional structure of the inclined boss is formed, the horn-shaped collection groove is formed between the two groups of multifunctional bosses to collect drill cuttings, and the liquid discharge groove is embedded in the multifunctional boss, which realizes the guidance of the liquid path of the liquid discharge pipe and the cooling between the shaft seat and the driving disc, reduces the temperature of the connection part; the openings of the liquid discharge grooves are distributed in the annular side surface of the multifunctional boss and correspond to the positions of the hole enlarging cutting part, the cooling liquid is sprayed at an angle of 15 ° from the liquid discharge groove, the drill cuttings are stripped and the cutter is cooled at the same time, the wear of the hole enlarging cutting part is reduced, and the service life of the hole enlarging cutting part is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0049] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0050] Figure 2 It is a sectional view of the present application;

[0051] Figure 3 It is an installation schematic diagram of the guide shaft of the present application;

[0052] Figure 4 Structure diagram of the guiding unit of the present application;

[0053] Figure 5 Structure diagram of the driving unit of the present application;

[0054] Figure 6 Structure diagram of the residue discharging unit of the present application;

[0055] Figure 7 Structure diagram of the liquid injection unit of the present application;

[0056] Figure 8 Sectional view of the multifunctional boss of the present application.

[0057] In the figure: 1, carrier; 101, control panel; 102, power supply; 103, walking wheel; 104, tow hook; 105, storage cavity; 2, track; 3, lifting platform; 4, lifting unit; 401, first motor; 402, screw rod; 403, sliding table; 404, guide rod; 5, drill pipe; 501, shaft seat; 6, driving disc; 601, reaming cutting part; 7, guiding unit; 701, guiding shaft; 702, clamping column; 703, sleeve seat; 704, fixing bolt; 8, residue discharging unit; 801, conveying pipe; 802, screw rod; 803, discharging pipe; 9, driving unit; 901, second motor; 902, main shaft; 903, first gear; 904, transmission rod; 905, second gear; 10, multifunctional boss; 1001, collection groove; 11, liquid injection unit; 1101, pump seat; 1102, main transmission screw rod; 1103, driven screw rod; 1104, liquid inlet pipe; 1105, liquid outlet pipe; 1106, liquid outlet groove. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0059] The rock-soil engineering investigation reaming device provided by the embodiments of the present application solves the problems of conventional reaming devices, such as that drill cuttings are easy to block the hole, leading to repeated cutting and increased energy consumption, lack of active guiding mechanism, excessive temperature rise of the cutter, separate residue discharging, cooling and reaming systems, power source redundancy, high energy consumption and complicated operation process.

[0060] In order to better understand the above technical scheme, the above technical scheme will be described in detail in combination with the drawings of the specification and specific embodiments.

[0061] Embodiment 1: The embodiment of the application discloses a reaming device for geotechnical engineering investigation, according to the accompanying drawings Figures 1-8 As shown in the drawings, it comprises a carrier 1, a track 2, a lifting platform 3, a lifting unit 4, a drill pipe 5, a driving disc 6, a guide unit 7, a slag removal unit 8 and a driving unit 9;

[0062] The carrier 1 is the basic support platform of the whole device, the bottom of the carrier 1 is provided with traveling wheels 103, so that the device can be flexibly moved at different investigation sites; the side towing hooks 104 can be connected with other transportation equipment during long-distance transfer, so that the portability is enhanced; the internal storage cavity 105 is used for storing tools, spare parts and consumables, so that the device function is more perfect. At the same time, the power supply 102 matched on the carrier 1 stably supplies power for each electric component, and the control panel 101 is convenient for the operator to centrally control the lifting unit 4 and the driving unit 9, so that the reaming operation process is accurately controlled.

[0063] The track 2 is arranged on the carrier 1; the lifting platform 3 is slidingly connected on the track 2; the lifting unit 4 is arranged on the track 2 and is used for controlling the lifting of the lifting platform 3; the track 2 is used for providing support and limiting of the lifting platform 3, and the height of the lifting platform 3 is adjusted through the lifting unit 4, so that the lifting platform 3 is controlled to lift and ream.

[0064] The drill pipe 5 is fixedly connected on the lifting platform 3, and the drill pipe 5 is fixedly connected with an axle seat 501 at the bottom; the driving disc 6 is rotationally connected at the bottom of the axle seat 501, and a plurality of groups of reaming cutting parts 601 are installed on the driving disc 6; the plurality of groups of reaming cutting parts 601 rotate under the driving of the driving disc 6, and directly cut and ream the rock-soil. The driving unit 9 is the power source of the driving disc 6;

[0065] The slag removal unit 8 is arranged on the side of the drill pipe 5, and the slag removal unit 8 comprises a conveying pipe 801, a spiral rod 802 and a discharging pipe 803;

[0066] The conveying pipe 801 is fixedly connected on the drill pipe 5 and the lifting platform 3;

[0067] The spiral rod 802 is rotationally connected in the conveying pipe 801, and the bottom is arranged above the driving disc 6;

[0068] The discharging pipe 803 is arranged on the side of the conveying pipe 801;

[0069] The residue discharging unit 8 is closely integrated on the side of the drill pipe 5. During the reaming operation, the rock and soil debris generated by cutting falls on the driving disc 6. With the rotation of the driving disc 6, the debris is thrown to the bottom of the screw rod 802. The screw rod 802 rotates under the power drive, continuously conveying the debris upward along the conveying pipe 801, and finally discharging it outside the device through the discharge pipe 803. The advantage of this residue discharging system is that it can clean the waste residue generated during the reaming process in real time and efficiently, avoiding the problems of sticking and jamming caused by poor residue discharging of traditional devices, greatly improving the continuity and efficiency of the reaming operation.

[0070] The driving unit 9 is arranged on the lifting platform 3 and is used to provide power to the driving disc 6 and the screw rod 802. The driving unit 9 includes a second motor 901, a main shaft 902, a first gear 903, a transmission rod 904, and a second gear 905.

[0071] The second motor 901 is arranged on the lifting platform 3.

[0072] The main shaft 902 is arranged at the output end of the second motor 901. The bottom of the main shaft 902 passes through the drill pipe 5 and the shaft seat 501 and is fixedly connected with the driving disc 6.

[0073] The first gear 903 is arranged on the main shaft 902.

[0074] The transmission rod 904 is arranged on the screw rod 802.

[0075] The second gear 905 is arranged on the transmission rod 904 and is engaged with the first gear 903.

[0076] When the second motor 901 is started, it drives the main shaft 902 to rotate, thereby driving the driving disc 6 to rotate for reaming operation. At the same time, the first gear 903 on the main shaft 902 drives the second gear 905 to rotate, thereby driving the transmission rod 904 and the screw rod 802 to rotate for residue discharging operation. This design of the driving unit 9 can provide power to the driving disc 6 and the screw rod 802 at the same time, realizing the simultaneous reaming and residue discharging, and improving the working efficiency and automation level of the device.

[0077] The shaft seat 501 is fixedly connected with a multifunctional boss 10. The multifunctional boss 10 is provided with a collection groove 1001. The bottom of the screw rod 802 is located in the collection groove 1001. The collection groove 1001 can collect the rock and soil debris generated during the reaming process, making it easier to be conveyed out by the screw rod 802, thereby improving the residue discharging efficiency.

[0078] The drill pipe 5 is provided with a liquid injection unit 11. The liquid injection unit 11 includes a pump seat 1101, a main drive screw 1102, a driven screw 1103, a liquid inlet pipe 1104, and a liquid outlet pipe 1105.

[0079] The pump seat 1101 is arranged on the drill pipe 5.

[0080] The main transmission screw 1102 is arranged on the main shaft 902 and inside the pump base 1101;

[0081] The driven screw 1103 is arranged inside the pump base 1101 and engaged with the main transmission screw 1102;

[0082] The liquid inlet pipe 1104 is arranged at the top of the pump base 1101;

[0083] The liquid outlet pipe 1105 is arranged at the bottom of the pump base 1101.

[0084] When the main shaft 902 rotates, the main shaft 902 synchronously drives the main transmission screw 1102 to rotate, thereby driving the driven screw 1103 to rotate, pumping the liquid entering the liquid inlet pipe 1104 into the liquid outlet pipe 1105, and finally reaching the reaming cutting part 601 through the liquid outlet groove 1106 of the multifunctional boss 10. The liquid injection unit 11 can provide cooling and lubricating liquid for the reaming site in time during the reaming process, reduce the temperature and friction in the reaming process, improve the reaming quality and efficiency, and at the same time reduce the wear of the reaming cutting part 601, prolong its service life.

[0085] The liquid outlet pipe 1105 is fixedly connected with the multifunctional boss 10, a plurality of liquid outlet grooves 1106 are arranged inside the multifunctional boss 10, and the plurality of liquid outlet grooves 1106 are aligned with the reaming cutting part 601; the plurality of liquid outlet grooves 1106 can make the liquid injected by the liquid injection unit 11 accurately reach the reaming cutting part 601, cool and lubricate the reaming site, reduce the friction and heat in the reaming process, prolong the service life of the reaming cutting part 601, and improve the reaming quality and efficiency.

[0086] The guide unit 7 is arranged at the bottom of the driving disc 6 and is used for reaming guidance; the guide unit 7 comprises a guide shaft 701, a clamping column 702, a sleeve base 703, and a fixing bolt 704;

[0087] The guide shaft 701 is arranged at the bottom of the driving disc 6, the clamping column 702 is fixedly connected to the guide shaft 701, the sleeve base 703 is fixedly connected to the driving disc 6, the clamping column 702 is movably clamped in the sleeve base 703, and the fixing bolt 704 is threadedly connected inside the sleeve base 703 and the clamping column 702 for fixation. The guide unit 7 provides guidance for the device during the reaming process, ensures the accuracy of the reaming direction, avoids problems such as hole deviation, and improves the quality and safety of the reaming operation. At the same time, the detachable design of the guide unit 7 facilitates the replacement of guide shafts 701 of different lengths, adapting to different hole diameter requirements.

[0088] The lifting unit 4 comprises a first motor 401, a screw rod 402 and a sliding table 403. The first motor 401 is arranged at the bottom of the track 2, the output end of the first motor 401 is connected with the screw rod 402, the sliding table 403 is fixedly connected with the lifting table 3 and is slidingly connected in the track 2, and the sliding table 403 is threadedly connected with the screw rod 402. When the first motor 401 is started, the screw rod 402 is driven to rotate, so that the sliding table 403 is lifted along the track 2, and the lifting table 3 is lifted. The inside of the track 2 is also fixedly connected with a guide rod 404, and the sliding table 403 is slidingly connected with the guide rod 404. The guide rod 404 plays a guiding role, so that the lifting movement of the sliding table 403 is more stable and accurate. The lifting unit 4 has simple design structure and convenient operation, can accurately control the lifting height of the lifting table 3, and meets the requirements of reaming operation at different depths.

[0089] The operation steps of the reaming device for geotechnical engineering investigation are as follows:

[0090] Firstly, the device is moved to the working site through the walking wheels 103 or the towing hooks 104, and is fixed and debugged.

[0091] Secondly, the parameters of the lifting unit 4 and the driving unit 9, such as lifting speed and rotating speed, are set through the operation panel 101.

[0092] Thirdly, the lifting unit 4 is started, the lifting table 3 drives the drill pipe 5 to descend, the driving unit 9 is started, the driving disc 6 is rotated to perform reaming operation, and the screw rod 802 is rotated to perform residue removal operation.

[0093] Fourthly, in the reaming process, the liquid injection unit 11 automatically provides cooling and lubricating liquid for the reaming position.

[0094] Fifthly, when the predetermined reaming depth is reached, the lifting unit 4 and the driving unit 9 are stopped, the drill pipe 5 is lifted out of the ground, and the reaming operation is completed.

[0095] Embodiment 2: The embodiment of the present application discloses a reaming device for geotechnical engineering investigation, according to the drawings, Figures 1-8 as shown, comprising a carrier 1, a track 2, a lifting table 3, a lifting unit 4, a drill pipe 5, a driving disc 6, a guide unit 7, a residue removal unit 8 and a driving unit 9;

[0096] The track 2 is arranged on the carrier 1;

[0097] The lifting table 3 is slidingly connected with the track 2;

[0098] The lifting unit 4 is arranged on the track 2 and is used for controlling the lifting of the lifting table 3;

[0099] The drill pipe 5 is fixedly connected with the lifting table 3, and the bottom of the drill pipe 5 is fixedly connected with an axle seat 501;

[0100] The driving disc 6 is rotationally connected at the bottom of the shaft base 501, and a plurality of groups of reaming cutting parts 601 are installed on the driving disc 6;

[0101] The guide unit 7 is arranged at the bottom of the driving disc 6 and is used for reaming guidance;

[0102] The slag discharge unit 8 is arranged at the side of the drill pipe 5, and the slag discharge unit 8 comprises a conveying pipe 801, a screw rod 802 and a discharge pipe 803;

[0103] The conveying pipe 801 is fixedly connected on the drill pipe 5 and the lifting platform 3;

[0104] The screw rod 802 is rotationally connected inside the conveying pipe 801, and the bottom thereof is arranged above the driving disc 6;

[0105] The discharge pipe 803 is arranged at the side of the conveying pipe 801;

[0106] The driving unit 9 is arranged on the lifting platform 3 and is used for providing power to the driving disc 6 and the screw rod 802.

[0107] As a further scheme of the present application, the gear set tooth number ratio dynamics of the driving unit 9 is optimized, so that the rotation speed ratio of the first gear 903 and the second gear 905 is 1:1.2, and the rotation speed of the slag discharge screw rod 802 is 1.2 times of the cutting rotation speed, which matches the drill cutting generation rate.

[0108] Meanwhile, the multifunctional boss 10 is used as a cooling hub for slag discharge, and a three-dimensional structure of a bevel boss is formed:

[0109] The two groups of multifunctional bosses 10 form a horn-shaped collection groove 1001 to collect drill cuttings;

[0110] The multifunctional boss 10 is internally embedded with a drainage groove 1106, which is used for guiding the liquid path of the drainage pipe 1105 on one hand, and cooling between the shaft base 501 and the driving disc 6 on the other hand, so as to reduce the temperature of the connection;

[0111] The openings of the drainage grooves 1106 are annularly distributed at the side of the multifunctional boss 10, and correspond to the positions of the reaming cutting parts 601. The cooling liquid is sprayed at an angle of 15° from the drainage grooves 1106, so as to simultaneously realize drill cutting stripping and tool cooling, reduce the wear of the reaming cutting parts 601, and improve the service life of the reaming cutting parts 601.

[0112] In summary, the rock-soil engineering investigation reaming device, the deslagging system reduces the pure drilling time ratio to 70%, the cooling liquid realizes efficient cooling and conveying, reduces the cutter replacement frequency, the hard rock layer continuous operation time is prolonged to 8 hours, the guide unit 7 controls the drilling deflection angle within 1°, ensures that the reaming direction accuracy error is less than 3cm, the liquid injection unit 11 reuses the driving unit 9 power, saves 30% energy compared with the independent hydraulic pump, the device realizes the three-dimensional cooperation of power, deslagging and cooling, and solves the three major difficulties of deslagging, drilling deviation and cutter burning in rock-soil reaming operation, the technical indexes of the device all exceed the current industry standards, and the device is especially suitable for precise rock-soil investigation scenes such as high-speed railway foundation and reservoir dam foundation.

[0113] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising", or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or inherent to such a process, method, article, or device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of additional identical elements in the process, method, article, or device including the element.

[0114] The basic principles and main features of the present application and the advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A borehole enlarging device for geotechnical engineering investigation, characterized by, Include: The carrier (1); Track (2), provided on the carrier (1); Lifting platform (3), slidingly connected to the track (2); Lifting unit (4), provided on the track (2) and used for controlling the lifting of the lifting platform (3); Drill pipe (5), fixedly connected to the lifting platform (3), the bottom of the drill pipe (5) is fixedly connected with the shaft seat (501); Driving disc (6), rotatably connected to the bottom of the shaft seat (501), a plurality of groups of reaming cutting parts (601) are installed on the driving disc (6); Guide unit (7), provided on the bottom of the driving disc (6) and used for reaming guide; Deslagging unit (8), provided on the side of the drill pipe (5), the deslagging unit (8) comprises: Conveying pipe (801), fixedly connected to the drill pipe (5) and the lifting platform (3); Screw rod (802), rotatably connected inside the conveying pipe (801), and the bottom thereof is arranged above the driving disc (6); Discharge pipe (803), provided on the side of the conveying pipe (801); Driving unit (9), provided on the lifting platform (3) and used for providing power for the driving disc (6) and the screw rod (802); Liquid injection unit (11), provided on the drill pipe (5); The driving unit (9) comprises: Second motor (901), provided on the lifting platform (3); Main shaft (902), provided on the output end of the second motor (901), the bottom of the main shaft (902) penetrates through the drill pipe (5) and the shaft seat (501) and is fixedly connected with the driving disc (6); First gear (903), provided on the main shaft (902); Transmission rod (904), provided on the screw rod (802); Second gear (905), provided on the transmission rod (904) and engaged with the first gear (903); The shaft seat (501) is fixedly connected with a multifunctional boss (10), the multifunctional boss (10) is provided with a collection groove (1001), and the bottom of the screw rod (802) is located in the collection groove (1001); The liquid injection unit (11) comprises: Pump seat (1101), provided on the drill pipe (5); Main transmission screw rod (1102), provided on the main shaft (902) and located inside the pump seat (1101); Driven screw rod (1103), provided inside the pump seat (1101) and engaged with the main transmission screw rod (1102); Liquid inlet pipe (1104), provided on the top of the pump seat (1101); Liquid outlet pipe (1105), provided on the bottom of the pump seat (1101); The liquid outlet pipe (1105) is fixedly connected with the multifunctional boss (10), a plurality of groups of liquid outlet grooves (1106) are formed in the multifunctional boss (10), and the plurality of groups of liquid outlet grooves (1106) are aligned with the reaming cutting parts (601).

2. The hole enlarging device for geotechnical engineering investigation according to claim 1, characterized in that, The guide unit (7) comprises: Guide shaft (701), provided on the bottom of the driving disc (6); Clamping column (702), fixedly connected to the guide shaft (701); The sleeve (703) is fixedly connected to the driving disc (6), and the clamping column (702) is movably clamped in the sleeve (703); The fixing bolt (704) is screw-connected to the inside of the sleeve (703) and the clamping column (702).

3. The hole enlarging device for geotechnical engineering investigation according to claim 1, characterized in that, The lifting unit (4) comprises: The first motor (401) is arranged at the bottom of the track (2); The lead screw (402) is arranged at the output end of the first motor (401); The sliding table (403) is fixedly connected to the lifting platform (3) and movably connected to the inside of the track (2), and the sliding table (403) is screw-connected to the lead screw (402); The guide rod (404) is fixedly connected to the inside of the track (2), and the sliding table (403) is movably connected to the guide rod (404).

4. The hole enlarging device for geotechnical engineering investigation according to claim 2, characterized in that, The rotation speed ratio of the first gear (903) and the second gear (905) is 1:1.

2.

5. The hole enlarging device for geotechnical engineering investigation of claim 1, wherein, The carrier (1) is provided with a power supply (102) for supplying power to the lifting unit (4) and the driving unit (9), and is provided with a control panel (101) for controlling the parameters of the lifting unit (4) and the driving unit (9).

6. The hole enlarging device for geotechnical engineering investigation of claim 1, wherein, The bottom of the carrier (1) is provided with a walking wheel (103), the side of the carrier (1) is provided with a towing hook (104), and the inside of the carrier (1) is provided with a storage cavity (105).

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