Reaming device for geotechnical engineering investigation

Abstract

The invention discloses a reaming device for geotechnical engineering investigation, and relates to the technical field of geotechnical investigation equipment. The reaming device for geotechnical engineering investigation comprises a carrier, a rail, a lifting table, a lifting unit, a drilling pipe, a driving disc, a guiding unit, a deslagging unit and a driving unit. According to the reaming device slag system for geotechnical engineering investigation, the pure drilling time proportion is reduced to 70%, efficient cooling and conveying of cooling liquid are achieved, the tool replacement frequency is reduced, the continuous operation time of a hard rock stratum is prolonged to 8 hours, the guide unit controls the drilling offset angle within 1 degree, it is ensured that the reaming direction precision error is smaller than 3 cm, the liquid injection unit reuses power of the driving unit, and the drilling efficiency is improved. Compared with an independent hydraulic pump, the device saves energy by 30%, achieves three-dimensional cooperation of power, deslagging and cooling, and overcomes three stubborn diseases of deslagging blockage, inclined drilling and tool burning in rock-soil reaming operation.

Description

Technical Field

[0001] The present invention relates to the technical field of geotechnical exploration equipment, and particularly to a hole expanding device for geotechnical engineering exploration. Background Art

[0002] Geotechnical engineering exploration requires accurate understanding of the distribution, properties and variation laws of underground rock and soil masses, providing a reliable basis for engineering design and construction. By expanding the hole, a more comprehensive understanding of the internal situation of the rock and soil mass can be achieved, reducing the exploration blind area caused by too small a borehole diameter. At the same time, hole expansion can be combined with other exploration means, such as ground penetrating radar, acoustic detection, etc., to improve the accuracy and depth of exploration.

[0003] Conventional hole expanding devices rely on the inner hole of the drill pipe or external mud circulation for slag discharge. In the working scenarios of loose sand layers and cohesive soil layers, drill cuttings are prone to block the hole passage, resulting in repeated cutting, increased energy consumption, and the pure drilling time accounting for less than 50%. There is a lack of an active guiding mechanism below the drill bit. In hard and soft alternating strata, the radial force on the hole expanding tool is uneven, and the deflection angle often exceeds 3°. During the cutting process, the cooling of the cutting part depends on artificial water injection or an independent pumping station. The coolant cannot accurately cover the interface between the tool and the rock and soil. In hard rock operations, the tool temperature rises by more than 200 °C, and the continuous working duration is only 3 - 4 hours. The slag discharge, cooling, and hole expanding systems are separate, the power source is redundant, the energy consumption is high, and the operation process is cumbersome. Therefore, in the hole expanding work of geotechnical engineering exploration in the prior art, there are easily three major problems: "slag discharge blockage, drilling deviation, and tool burning". In view of the deficiencies of the prior art, the present invention provides a hole expanding device for geotechnical engineering exploration to solve the above problems. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a hole expanding device for geotechnical engineering exploration. Through an integrated design of "power - slag discharge - cooling - guiding", efficient slag discharge, precise guiding, efficient cooling, and energy efficiency optimization are achieved. This device is particularly suitable for loose sand layers and highly cohesive soil layers, fundamentally overcoming the three major technical problems of "slag discharge blockage, drilling deviation, and tool burning" in geotechnical hole expansion, and providing high - reliability equipment support for major engineering exploration.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A hole expanding device for geotechnical engineering exploration, comprising a carrier, a track, a lifting platform, a lifting unit, a drill pipe, a driving disk, a guiding unit, a slag discharge unit, and a driving unit; The track is arranged on the carrier; The lifting platform is slidably connected to the track; The lifting unit is arranged on the track and is used to control the lifting of the lifting platform; The drill pipe is fixedly connected to the lifting platform, and a shaft seat is fixedly connected to the bottom of the drill pipe; The driving disk is rotatably connected to the bottom of the shaft seat, and a plurality of groups of hole-expanding cutting parts are installed on the driving disk; The guiding unit is arranged at the bottom of the driving disk and is used for hole-expanding guiding; The slag discharging unit is arranged on the side of the drill pipe, and the slag discharging unit includes a conveying pipe, a screw rod and a discharging pipe; The conveying pipe is fixedly connected to the drill pipe and the lifting table; The screw rod is rotatably connected inside the conveying pipe, and its bottom is arranged above the driving disk; The discharging pipe is arranged on the side of the conveying pipe; The driving unit is arranged on the lifting table and is used to provide power for the driving disk and the screw rod.

[0006] Preferably, the driving unit includes a second motor, a main shaft, a first gear, a transmission rod and a second gear; The second motor is arranged on the lifting table; The main shaft is arranged at the output end of the second motor, and the bottom of the main shaft passes through the drill pipe and the shaft seat and is fixedly connected to the driving disk; The first gear is arranged on the main shaft; The transmission rod is arranged on the screw rod; The second gear is arranged on the transmission rod and meshes with the first gear.

[0007] Preferably, a multi-functional convex platform is fixedly connected to the shaft seat, a collecting groove is provided on the multi-functional convex platform, and the bottom of the screw rod is located in the collecting groove.

[0008] Preferably, a liquid injection unit is provided on the drill pipe, and the liquid injection unit includes a pump seat, a main driving screw rod, a driven screw rod, a liquid inlet pipe and a liquid discharge pipe; The pump seat is arranged on the drill pipe; The main driving screw rod is arranged on the main shaft and is located inside the pump seat; The driven screw rod is arranged inside the pump seat and meshes with the main driving screw rod; The liquid inlet pipe is arranged at the top of the pump seat; The liquid discharge pipe is arranged at the bottom of the pump seat.

[0009] Preferably, the liquid discharge pipe is fixedly connected to the multi-functional convex platform, and a plurality of groups of liquid discharge grooves are formed inside the multi-functional convex platform, and the plurality of groups of liquid discharge grooves are aligned with the hole-expanding cutting parts.

[0010] Preferably, the guiding unit includes a guiding shaft, a clamping post, a socket and a fixing bolt; The guiding shaft is arranged at the bottom of the driving disk; The clamping post is fixedly connected to the guiding shaft; The socket is fixedly connected to the driving disk, and the clamping post is movably clamped in the socket; The fixing bolt is threadedly connected inside the socket and the clamping post.

[0011] Preferably, the lifting unit includes a first motor, a lead screw, and a sliding table; The first motor is arranged at the bottom of the track; The lead screw is arranged at the output end of the first motor; The sliding table is fixedly connected to the lifting platform and slidably connected inside the track, and the sliding table is threadedly connected to the lead screw.

[0012] Preferably, a guide rod is fixedly connected inside the track, and the sliding table is slidably connected to the guide rod.

[0013] Preferably, the speed ratio of the first gear and the second gear is set to 1:1.2.

[0014] Preferably, a power source for supplying power to the lifting unit and the driving unit is provided on the carrier, and a control panel for controlling the parameters of the lifting unit and the driving unit is provided on the carrier.

[0015] Preferably, walking wheels are provided at the bottom of the carrier, a towing hook is provided on the side of the carrier, and a storage cavity is provided inside the carrier.

[0016] The present invention discloses a hole expanding device for geotechnical engineering exploration, and the beneficial effects thereof are as follows: 1. For the hole expanding device for geotechnical engineering exploration, the slag discharging system reduces the proportion of pure drilling time to 70%, the coolant realizes efficient cooling and transportation, reduces the tool replacement frequency, extends the continuous operation time in hard rock formations to 8 hours, the guiding unit controls the drilling deflection angle within 1°, ensures that the accuracy error of the hole expanding direction is <3 cm, the liquid injection unit reuses the power of the driving unit, saves 30% energy compared with an independent hydraulic pump, this device realizes the three-dimensional coordination of power, slag discharging, and cooling, overcomes the three major problems of "slag discharging blockage, drilling deviation, and tool burning" in geotechnical hole expanding operations, and the technical indicators of this device all exceed the current industry standards, and it is especially suitable for precision geotechnical exploration scenarios such as high-speed railway subgrades and reservoir dam bases.

[0017] 2. For the hole expanding device for geotechnical engineering exploration, an integrated power transmission system is adopted, and the driving unit synchronously drives the driving disk, the slag discharging unit, and the liquid injection unit, avoiding the problem of redundant power sources in traditional devices, reducing energy consumption, with remarkable energy-saving effects, reducing the energy consumption and overall operation cost of the device, by optimizing the tooth number ratio of the gear set of the driving unit, making the rotation speed of the slag discharging screw precisely match the cutting rotation speed, ensuring the timely and efficient discharge of drill cuttings, enabling the device to maintain high-efficiency and stable hole expanding performance in working scenarios of loose sand layers and cohesive soil layers.

[0018] 3. The hole - enlarging device for geotechnical engineering investigation further enhances the cooling and slag - discharging effects of the device through the design of multi - functional bosses. The multi - functional bosses serve as the hubs for slag - discharging and cooling. They form a three - dimensional structure of inclined bosses, and a trumpet - shaped collecting groove is formed between two groups of multi - functional bosses to collect drill chips. Drainage grooves are buried inside the multi - functional bosses. On the one hand, it guides the liquid path of the drain pipe, and on the other hand, it cools the area between the shaft seat and the driving disk to reduce the temperature at the connection. The openings of the drainage grooves are annularly distributed on the side of the multi - functional bosses, corresponding to the position of the hole - enlarging cutting part. The coolant is sprayed at a 15° angle from the drainage grooves, simultaneously realizing the peeling of drill chips and the cooling of the cutting tool, reducing the wear of the hole - enlarging cutting part and enhancing the service life of the hole - enlarging cutting part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following - described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross - sectional view of the present invention; Figure 3 It is an installation schematic diagram of the guiding shaft of the present invention; Figure 4 It is a schematic diagram of the structure of the guiding unit of the present invention; Figure 5 It is a schematic diagram of the structure of the driving unit of the present invention; Figure 6 It is a schematic diagram of the structure of the slag - discharging unit of the present invention; Figure 7 It is a schematic diagram of the structure of the liquid - injection unit of the present invention; Figure 8 It is a cross - sectional view of the multi - functional boss of the present invention.

[0021] In the figure: 1. Carrier; 101. Control panel; 102. Power supply; 103. Traveling wheels; 104. Towing hook; 105. Storage cavity; 2. Rail; 3. Lift table; 4. Lifting unit; 401. First motor; 402. Lead screw; 403. Slide table; 404. Guide rod; 5. Drill pipe; 501. Axle seat; 6. Driving disc; 601. Reaming cutting part; 7. Guiding unit; 701. Guide shaft; 702. Clamping post; 703. Socket; 704. Fixing bolt; 8. Slag discharging unit; 801. Delivery pipe; 802. Screw rod; 803. Discharge 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 drive screw; 1103. Driven screw; 1104. Liquid inlet pipe; 1105. Liquid discharge pipe; 1106. Liquid discharge groove. Detailed implementation mode

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0023] By providing a reaming device for geotechnical engineering investigation in the embodiments of this application, the problems of conventional reaming devices are solved, such as easy blockage of the drill chips in the hole, resulting in repeated cutting, increased energy consumption, lack of an active guiding mechanism, too high temperature rise of the cutting tool, separation of the slag discharging, cooling and reaming systems, redundant power sources, high energy consumption and cumbersome operation processes.

[0024] To better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the specification drawings and specific implementation modes.

[0025] Example 1: An embodiment of the present invention discloses a reaming device for geotechnical engineering investigation. As shown in the attached Figure 1-8 figure, it includes a carrier 1, a rail 2, a lift table 3, a lifting unit 4, a drill pipe 5, a driving disc 6, a guiding unit 7, a slag discharging unit 8 and a driving unit 9; The carrier 1 is the basic support platform of the entire device. There are traveling wheels 103 at the bottom of the carrier 1, which facilitate the flexible movement of the device at different exploration sites; the towing hook 104 on the side can be connected to other transportation equipment during long-distance transfer to enhance portability; the internal storage cavity 105 is used to store tools, spare parts and consumables, making the device function more complete. At the same time, the power supply 102 equipped on the carrier 1 stably supplies power to each electrical component, and the control panel 101 facilitates the operator to centrally control the lifting unit 4 and the driving unit 9, realizing the precise regulation of the reaming operation process.

[0026] The track 2 is arranged on the carrier 1; the lifting platform 3 is slidably connected to the track 2; the lifting unit 4 is arranged on the track 2 and is used to control the lifting of the lifting platform 3; the track 2 is used to provide support and limit for the lifting platform 3, and the height of the lifting platform 3 can be conveniently adjusted through the lifting unit 4, and then the lifting of the lifting platform 3 is controlled to carry out the reaming operation.

[0027] The drill pipe 5 is fixedly connected to the lifting platform 3, and a shaft seat 501 is fixedly connected to the bottom of the drill pipe 5; the driving disk 6 is rotatably connected to the bottom of the shaft seat 501, and several groups of reaming cutting parts 601 are installed on the driving disk 6; several groups of reaming cutting parts 601 rotate driven by the driving disk 6 to directly cut and ream the rock and soil. The driving unit 9 is the power source of the driving disk 6; The slag discharge unit 8 is arranged on the side of the drill pipe 5, and the slag discharge unit 8 includes a conveying pipe 801, a screw rod 802 and a discharge pipe 803; The conveying pipe 801 is fixedly connected to the drill pipe 5 and the lifting platform 3; The screw rod 802 is rotatably connected inside the conveying pipe 801, and its bottom is arranged above the driving disk 6; The discharge pipe 803 is arranged on the side of the conveying pipe 801; The slag discharge unit 8 is closely integrated on the side of the drill pipe 5. During the reaming operation, the rock and soil slag generated by cutting falls on the driving disk 6. As the driving disk 6 rotates, the slag is thrown towards the bottom of the screw rod 802. The screw rod 802 rotates driven by power, continuously conveys the slag upward along the conveying pipe 801, and finally discharges it outside the device through the discharge pipe 803. The advantage of this slag discharge system is that it can clean the waste slag generated during the reaming process in real time and efficiently, avoiding the problems of drill sticking and blockage caused by poor slag discharge of traditional devices, and greatly improving the continuity and efficiency of the reaming operation.

[0028] The driving unit 9 is arranged on the lifting platform 3 and is used to provide power for the driving disk 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; The second motor 901 is arranged on the lifting platform 3; 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 to the driving disc 6. The first gear 903 is arranged on the main shaft 902. The transmission rod 904 is arranged on the screw rod 802. The second gear 905 is arranged on the transmission rod 904 and meshes with the first gear 903.

[0029] 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, and then drives the transmission rod 904 and the screw rod 802 to rotate for slag discharge operation. This design of the drive unit 9 can provide power for both the driving disc 6 and the screw rod 802 at the same time, realizing the synchronous reaming and slag discharge, and improving the working efficiency and automation degree of the device.

[0030] A multi-functional boss 10 is fixedly connected to the shaft seat 501. A collecting groove 1001 is arranged on the multi-functional boss 10. The bottom of the screw rod 802 is located in the collecting groove 1001. The collecting groove 1001 can collect the rock and soil debris generated during the reaming process, making it easier to be transported by the screw rod 802 and improving the slag discharge efficiency.

[0031] A liquid injection unit 11 is arranged on the drill pipe 5. The liquid injection unit 11 includes a pump seat 1101, a main driving screw rod 1102, a driven screw rod 1103, a liquid inlet pipe 1104, and a liquid discharge pipe 1105. The pump seat 1101 is arranged on the drill pipe 5. The main driving screw rod 1102 is arranged on the main shaft 902 and is located inside the pump seat 1101. The driven screw rod 1103 is arranged inside the pump seat 1101 and meshes with the main driving screw rod 1102. The liquid inlet pipe 1104 is arranged on the top of the pump seat 1101. The liquid discharge pipe 1105 is arranged on the bottom of the pump seat 1101.

[0032] When the main shaft 902 rotates, the main shaft 902 synchronously drives the main driving screw rod 1102 to rotate, thereby driving the driven screw rod 1103 to rotate, pumping the liquid entering from the liquid inlet pipe 1104 into the liquid discharge pipe 1105, and finally reaching the reaming cutting part 601 through the liquid discharge groove 1106 of the multi-functional boss 10. The liquid injection unit 11 can timely provide cooling and lubricating liquid for the reaming part during the reaming process, reduce the temperature and friction during the reaming process, improve the reaming quality and efficiency, and at the same time reduce the wear of the reaming cutting part 601 and extend its service life.

[0033] The liquid discharge pipe 1105 is fixedly connected to the multi-functional boss 10. A plurality of liquid discharge grooves 1106 are provided inside the multi-functional boss 10, and the plurality of liquid discharge grooves 1106 are aligned with the reaming cutting part 601; the plurality of liquid discharge grooves 1106 can enable the liquid injected by the liquid injection unit 11 to accurately reach the reaming cutting part 601, cool and lubricate the reaming part, reduce friction and heat during the reaming process, extend the service life of the reaming cutting part 601, and improve the reaming quality and efficiency.

[0034] The guiding unit 7 is arranged at the bottom of the driving disk 6 and is used for reaming guidance; the guiding unit 7 includes a guiding shaft 701, a clamping column 702, a socket 703, and a fixing bolt 704; The guiding shaft 701 is arranged at the bottom of the driving disk 6. The clamping column 702 is fixedly connected to the guiding shaft 701. The socket 703 is fixedly connected to the driving disk 6. The clamping column 702 is movably clamped inside the socket 703 and is fixed by a fixing bolt 704 screwed into the inside of the socket 703 and the clamping column 702. The function of the guiding unit 7 is to provide guidance for the device during the reaming process, ensure the accuracy of the reaming direction, avoid problems such as off-hole, and improve the quality and safety of the reaming operation. At the same time, the detachable design of the guiding unit 7 facilitates the replacement of guiding shafts 701 of different lengths to adapt to different hole diameter requirements.

[0035] The lifting unit 4 includes a first motor 401, a lead screw 402, and a sliding table 403. The first motor 401 is arranged at the bottom of the track 2, and its output end is connected to the lead screw 402. The sliding table 403 is fixedly connected to the lifting table 3 and slidably connected inside the track 2 and is threadedly connected to the lead screw 402. When the first motor 401 is started, it drives the lead screw 402 to rotate, so that the sliding table 403 rises and falls along the track 2, and then drives the lifting table 3 to rise and fall. A guide rod 404 is also fixedly connected inside the track 2, and the sliding table 403 is slidably connected to the guide rod 404. The guide rod 404 plays a guiding role to ensure that the lifting movement of the sliding table 403 is smoother and more accurate. The design structure of the lifting unit 4 is simple and easy to operate, and can accurately control the lifting height of the lifting table 3 to meet the requirements of reaming operations at different depths.

[0036] The operation steps of the reaming device for geotechnical engineering investigation are as follows: First, move the device to the working location through the walking wheels 103 or the towing hook 104, and perform fixation and debugging.

[0037] Second, set the parameters of the lifting unit 4 and the driving unit 9 through the control panel 101, such as the lifting speed, rotation speed, etc.

[0038] Third, start the lifting unit 4 to make the lifting table 3 drive the drill pipe 5 to descend, and at the same time start the driving unit 9 to make the driving disk 6 rotate for reaming operations and the screw rod 802 rotate for slag discharge operations.

[0039] Fourth, during the reaming process, the liquid injection unit 11 automatically provides cooling and lubricating liquid for the reaming area.

[0040] Fifth, when the predetermined reaming depth is reached, the lifting unit 4 and the driving unit 9 are stopped, and the drill pipe 5 is lifted out of the ground to complete the reaming operation.

[0041] Embodiment 2: An embodiment of the present invention discloses a reaming device for geotechnical engineering investigation. As shown in the attached Figure 1-8 figure, it includes a carrier 1, a track 2, a lifting platform 3, a lifting unit 4, a drill pipe 5, a driving disk 6, a guiding unit 7, a slag discharging unit 8, and a driving unit 9; The track 2 is arranged on the carrier 1; The lifting platform 3 is slidably connected to the track 2; The lifting unit 4 is arranged on the track 2 and is used to control the lifting of the lifting platform 3; The drill pipe 5 is fixedly connected to the lifting platform 3, and a shaft seat 501 is fixedly connected to the bottom of the drill pipe 5; The driving disk 6 is rotatably connected to the bottom of the shaft seat 501, and a number of reaming cutting parts 601 are installed on the driving disk 6; The guiding unit 7 is arranged at the bottom of the driving disk 6 and is used for reaming guidance; The slag discharging unit 8 is arranged on the side of the drill pipe 5. The slag discharging unit 8 includes a conveying pipe 801, a screw rod 802, and a discharging pipe 803; The conveying pipe 801 is fixedly connected to the drill pipe 5 and the lifting platform 3; The screw rod 802 is rotatably connected inside the conveying pipe 801, and its bottom is arranged above the driving disk 6; The discharging pipe 803 is arranged on the side of the conveying pipe 801; The driving unit 9 is arranged on the lifting platform 3 and is used to provide power for the driving disk 6 and the screw rod 802.

[0042] As a further solution of the present invention, the gear 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, ensuring that the rotation speed of the slag discharging screw rod 802 is 1.2 times the cutting rotation speed to match the drill chip generation rate.

[0043] Meanwhile, the multi-functional convex platform 10 serves as a slag discharging and cooling hub, and its three-dimensional structure forms an inclined convex platform: A horn-shaped collecting groove 1001 is formed between two groups of multi-functional convex platforms 10 to collect drill chips; A liquid discharging groove 1106 is buried inside the multi-functional convex platform 10. On the one hand, it realizes the liquid path guidance for the liquid discharging pipe 1105, and on the other hand, it realizes the cooling between the shaft seat 501 and the driving disk 6 to reduce the temperature at the connection; The openings of the annularly distributed liquid discharge grooves 1106 on the side of the multifunctional boss 10 correspond to the position of the reaming cutting part 601. The coolant is sprayed from the liquid discharge grooves 1106 at an angle of 15°, synchronously realizing chip peeling and tool cooling, reducing the wear of the reaming cutting part 601, and prolonging the service life of the reaming cutting part 601.

[0044] In summary, for this reaming device used in geotechnical engineering investigation, the slag discharge system reduces the proportion of pure drilling time to 70%. The coolant realizes efficient cooling and transportation, reduces the tool replacement frequency, extends the continuous operation time in hard rock formations to 8 hours. The guiding unit 7 controls the drilling deviation angle within 1°, ensuring that the accuracy error of the reaming direction is < 3 cm. The liquid injection unit 11 reuses the power of the driving unit 9, saving 30% energy compared with an independent hydraulic pump. This device realizes three-dimensional coordination of power, slag discharge, and cooling, overcoming the three major problems of "slag discharge blockage, drilling deviation, and tool burning" in geotechnical reaming operations. The technical indicators of this device all exceed the current industry standards, and it is especially suitable for precision geotechnical investigation scenarios such as high-speed railway subgrades and reservoir dam bases.

[0045] It should be noted that in this article, 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 sequence between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is 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 expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A hole enlarging device for geotechnical engineering investigation, characterized in that: Comprising: A carrier (1); A track (2) disposed on the carrier (1); A lifting platform (3) slidably connected to the track (2); A lifting unit (4) disposed on the track (2) and used to control the lifting of the lifting platform (3); A drill pipe (5) fixedly connected to the lifting platform (3), and a shaft seat (501) is fixedly connected to the bottom of the drill pipe (5); A driving disk (6) rotatably connected to the bottom of the shaft seat (501), and a plurality of groups of hole-expanding cutting parts (601) are installed on the driving disk (6); A guiding unit (7) disposed at the bottom of the driving disk (6) and used for hole-expanding guiding; A slag discharging unit (8) disposed on the side of the drill pipe (5), and the slag discharging unit (8) comprises: A conveying pipe (801) fixedly connected to the drill pipe (5) and the lifting platform (3); A screw rod (802) rotatably connected inside the conveying pipe (801), and the bottom thereof is disposed above the driving disk (6); A discharging pipe (803) disposed on the side of the conveying pipe (801); A driving unit (9) disposed on the lifting platform (3) and used to provide power for the driving disk (6) and the screw rod (802); A liquid injection unit (11) disposed on the drill pipe (5).

2. A hole enlarging device for geotechnical engineering investigation according to claim 1, characterized in that: The driving unit (9) comprises: A second motor (901) disposed on the lifting platform (3); A main shaft (902) disposed at the output end of the second motor (901), and the bottom of the main shaft (902) passes through the drill pipe (5) and the shaft seat (501) and is fixedly connected to the driving disk (6); A first gear (903) disposed on the main shaft (902); A transmission rod (904) disposed on the screw rod (802); A second gear (905) disposed on the transmission rod (904) and meshing with the first gear (903).

3. The reaming device for geotechnical engineering investigation according to claim 2, characterized in that, A multi-functional boss (10) is fixedly connected to the shaft seat (501), a collecting groove (1001) is provided on the multi-functional boss (10), and the bottom of the screw rod (802) is located in the collecting groove (1001).

4. The reaming device for geotechnical engineering investigation according to claim 3, characterized in that, The liquid injection unit (11) comprises: A pump seat (1101) disposed on the drill pipe (5); A main driving screw rod (1102) disposed on the main shaft (902) and located inside the pump seat (1101); A driven screw rod (1103) disposed inside the pump seat (1101) and meshing with the main driving screw rod (1102); A liquid inlet pipe (1104) disposed on the top of the pump seat (1101); A liquid discharge pipe (1105) disposed on the bottom of the pump seat (1101).

5. The reaming device for geotechnical engineering investigation according to claim 4, characterized in that, The liquid discharge pipe (1105) is fixedly connected to the multi-functional boss (10), and a plurality of groups of liquid discharge grooves (1106) are formed inside the multi-functional boss (10), and the plurality of groups of liquid discharge grooves (1106) are aligned with the hole-expanding cutting parts (601) in position.

6. The reaming device for geotechnical engineering investigation according to claim 1, characterized in that, The guiding unit (7) comprises: A guiding shaft (701) disposed at the bottom of the driving disk (6); A clamping column (702) fixedly connected to the guiding shaft (701); The socket (703) is fixedly connected to the driving disk (6), and the clamping post (702) is movably clamped in the socket (703); The fixing bolt (704) is threadedly connected inside the socket (703) and the clamping post (702).

7. A hole expanding device for geotechnical engineering investigation according to claim 1, characterized in that, The lifting unit (4) includes: 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 table (3) and slidably connected inside the track (2), and the sliding table (403) is threadedly connected to the lead screw (402); A guide rod (404) is fixedly connected inside the track (2), and the sliding table (403) is slidably connected to the guide rod (404).

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

2.

9. The reaming device for geotechnical engineering investigation according to claim 1, characterized in that, A power supply (102) for supplying power to the lifting unit (4) and the driving unit (9) is provided on the carrier (1), and a control panel (101) for controlling the parameters of the lifting unit (4) and the driving unit (9) is provided on the carrier (1).

10. The reaming device for geotechnical engineering investigation according to claim 1, characterized in that, Walking wheels (103) are provided at the bottom of the carrier (1), a towing hook (104) is provided on the side of the carrier (1), and a storage cavity (105) is provided inside the carrier (1).

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