Sampling device for engineering geological exploration

Abstract

The invention discloses a sampling device for engineering geological exploration, and belongs to the technical field of geological exploration equipment, the sampling device for engineering geological exploration comprises a mounting underframe, the center of the top of the mounting underframe is fixedly connected with a lifting mechanism, and the lifting mechanism is provided with a driving mechanism; a plurality of drilling pipes are mounted at the bottom of the driving mechanism, a connecting mechanism is mounted at the bottom end of one drilling pipe, and a coring pipe is mounted at the bottom of the connecting mechanism. The drilling pipe, the coring pipe and the connecting mechanism are designed, the coring pipe is in threaded connection with the connecting mechanism, the coring pipe is in threaded connection with the drilling pipe through the connecting mechanism, assembling or disassembling is easy each time, meanwhile, when a worker takes out the coring pipe, the coring pipe can be rapidly disassembled into two connecting half pipes, and then a geological sample is rapidly taken out; the working efficiency is greatly improved, meanwhile, the continuity and integrity of the sample are ensured, and subsequent experimental detection is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of geological exploration equipment, and in particular relates to a sampling device for engineering geological exploration. Background Art

[0002] Engineering geological exploration refers to geological surveys and analysis for construction projects. Its main purpose is to evaluate and understand the underground rock structure, geological characteristics and geological structure, so as to determine the geological conditions and potential geological risks of engineering construction. However, geological sampling is one of the tasks. Sampling in geological exploration refers to the collection of underground rock or soil samples for analysis and testing to obtain information about geological characteristics, physical properties and chemical composition. The sampling methods and tools can vary according to the specific exploration purpose and geological conditions. Common sampling methods include: Core sampling: used to obtain continuous Continuous core samples, especially suitable for hard rock, are continuously taken out from underground by rotating the core drill bit while maintaining its integrity; soil sampling: deep soil sampling is carried out using a drilling rig, usually including a core drill and a pipe drill, to obtain soil columnar samples; water sampling: used to obtain water samples from below the groundwater level to analyze the physical and chemical properties of groundwater; rock sampling: rocks are broken with hammers and chisels to obtain rock samples for physical property and chemical composition analysis; geochemical sampling: soil samples are collected from different depths of the surface for analysis of chemical elements in the surface cover.

[0003] Existing engineering geological exploration usually uses a double-tube sampling device to obtain geological samples. The core tube is installed inside the drill pipe. Every time the staff drills down a certain distance, the core tube that has collected the geological sample is raised, and the sample inside the core tube is discharged by knocking. However, if the staff cannot control the strength during this process, the geological sample will break or shatter, and the continuity of the sample cannot be ensured, which will affect the subsequent detection data of the sample. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a sampling device for engineering geological exploration.

[0005] The technical solution adopted to solve the above technical problems is: a sampling device for engineering geological exploration, comprising a mounting frame, a lifting mechanism is fixedly connected to the top center of the mounting frame, and a driving mechanism is installed on the lifting mechanism; A plurality of drill pipes are installed at the bottom of the driving mechanism, a connecting mechanism is installed at the bottom end of one of the drill pipes, a core pipe is installed at the bottom of the connecting mechanism, and the core pipe is located inside one of the drill pipes; A drill bit is installed at the bottom end of the other drill pipe, and a fixing mechanism is fixedly connected to the front center of the mounting base.

[0006] Furthermore, the lifting mechanism includes a fixed frame fixedly connected to the top center of the mounting base, a screw rod is installed in the center of the fixed frame, a first motor is fixedly installed on the top of the fixed frame, the bottom end of the output shaft of the first motor is fixedly connected to the top of the screw rod, the center of the fixed frame and both sides close to the screw rod are fixedly connected with slide rails, a nut seat is spirally connected to the screw rod, the front end of the nut seat is fixedly connected to a connecting plate, the rear end of the connecting plate is fixedly connected to two slide bars, and the two slide bars are respectively slidably connected to the corresponding slide rails.

[0007] Through the above technical solution, after the drill pipe, core pipe and drill bit are installed, when drilling the ground, the first motor is started, and the first motor drives the screw to rotate through the output shaft, thereby driving the nut seat to move downward. The nut seat slides on two slide rails through two slide bars and has a certain stability. The downward movement of the nut seat drives the connecting plate to move, thereby driving the driving mechanism to move downward, thereby driving the drill pipe, core pipe and drill bit to drill downward. When the core pipe is removed or another drill pipe is installed, it is necessary to drive the driving mechanism to move upward through the lifting mechanism to provide space for removing the core pipe or installing another drill pipe, so as to facilitate the operation of the staff.

[0008] Furthermore, the driving mechanism includes a second motor fixedly connected to the front end of the connecting plate, a fixing sleeve is fixedly connected to the outside of the output shaft of the second motor, a plurality of annular through holes are opened in the inner center of the fixing sleeve, a retaining ring is fixedly connected to the outer center of the fixing sleeve, a first external thread is provided at the bottom end of the outer wall of the fixing sleeve, a connecting sleeve is sleeved between the fixing sleeve and the output shaft of the second motor, the bottom end of the connecting sleeve cooperates with the retaining ring, and a water pipe is fixedly connected to the outer wall of the connecting sleeve.

[0009] Through the above technical solution, when drilling the ground, firstly, the water pipe is connected to the external water pump, and the second motor is started, so that the second motor drives the fixed sleeve to rotate through the output shaft, thereby driving the connected multiple drill pipes to rotate, and then driving the drill bit at the bottom to rotate, so as to achieve underground drilling, and the geological samples obtained by drilling are collected through the core tube. During the rotation of the drill bit, the external water pump transports the pumped water into the connecting sleeve through the water pipe, and transports it into the connected drill pipes through multiple through holes, and finally transports it to the drill bit, which can not only cool the drill bit, but also help the integrity of the collected geological samples. When it is necessary to drill deeper geological samples into the ground again, it is necessary to install another drill pipe on the original drill pipe, drive the fixed sleeve upward to the specified position through the lifting mechanism, align the bottom end of the new drill pipe with the top of the fixing mechanism and insert it, so that the bottom end of the new drill pipe is aligned with the top of the underground drill pipe, and the fixed sleeve is driven to rotate by the second motor, thereby driving the new drill pipe, so that the new drill pipe is threadedly connected with the underground drill pipe, and the assembly connection of the drill pipe is saved by the driving mechanism, which saves time and effort.

[0010] Furthermore, a first internal thread is provided at the top end of the inner wall of the drill pipe, and a second external thread is provided at the bottom end of the outer wall of the drill pipe, one of the drill pipes is threadedly connected to the first external thread at the bottom end of the outer wall of the fixed sleeve through the first internal thread, two of the drill pipes are threadedly connected to the corresponding second external thread through the first internal thread respectively, and the other drill pipe is threadedly connected to the drill bit through the second external thread.

[0011] Through the above technical solution, the new drill pipe is threadedly connected to the first internal thread at the top of the underground drill pipe through the second external thread at the bottom. Similarly, multiple drill pipes can be connected, so that the staff can drill geological samples at different depths, thereby analyzing the geological type, composition, structure and characteristics of each stratum, greatly improving the comprehensiveness of experimental detection.

[0012] Furthermore, the connecting mechanism includes a first connecting head arranged at the bottom of one of the drill pipes, a second internal thread is provided at the top end of the inner wall of the first connecting head, a third external thread is provided at the bottom end of the outer wall of the first connecting head, the bottom end of the first connecting head is fixedly connected to the second connecting head, a plurality of annularly distributed drainage holes are provided between the first connecting head and the second connecting head, and a fourth external thread is provided at the bottom end of the outer wall of the second connecting head.

[0013] Through the above technical solution, when installing the core tube, first place the core tube in the drill pipe, connect it to the core tube through the fourth external thread at the bottom end of the outer wall of the second connector, and then connect the third external thread at the bottom end of the outer wall of the first connector to the drill pipe, so that the core tube is installed inside the drill pipe, and finally connect the first connector to the driving mechanism or the new drill pipe through the second internal thread, so that the connectivity is strong. At the same time, when the equipment is working, the water in the drill pipe flows to the next section of the drill pipe through multiple drainage holes.

[0014] Furthermore, the first connector is threadedly connected to the second external thread of the drill pipe near the top through a second internal thread, and the first connector is threadedly connected to the second external thread of the drill pipe near the bottom through a third external thread.

[0015] Through the above technical solution, when the core tube needs to be removed, first rotate the top of the outer wall of the first connector to remove the first connector and the core tube together, then continue to rotate the first connector to remove the core tube from the first connector, and then open the core tube to remove the geological sample.

[0016] Furthermore, the core sampling tube includes two connecting half tubes, each of which is provided with a card groove, each of which is fixedly connected with a card block, a third internal thread is provided at the top of the inner wall between the two connecting half tubes, a fifth external thread is provided at the outer bottom end between the two connecting half tubes, and a card seat is installed at the bottom end of the two connecting half tubes, and a fourth internal thread is provided at the bottom end of the inner wall of the card seat.

[0017] Through the above technical solution, when it is necessary to take out the geological sample in the core tube, the connecting mechanism is first disassembled, and then the holder is rotated to remove the holder from the two connecting half-tubes, and then the two connecting half-tubes are forcefully pried apart to take out the geological sample between the two connecting half-tubes. When it is necessary to continue drilling underground, the two cleaned connecting half-tubes are merged so that the two clamping blocks fit into the corresponding clamping grooves, and then the holder is threadedly connected to the fifth external thread through the fourth internal thread, and then the connecting mechanism is installed so that the two connecting half-tubes and the connecting mechanism are installed together inside the drill pipe.

[0018] Furthermore, the two connecting half-tubes are respectively engaged with corresponding card blocks and corresponding card grooves, the card seat is threadedly connected to the fifth external thread between the two connecting half-tubes through a fourth internal thread, and the first connecting head is threadedly connected to the third internal thread between the two connecting half-tubes through a fourth external thread.

[0019] Through the above technical solution, when the staff takes out the core tube, they can quickly disassemble it into two connected half tubes, and then quickly take out the geological samples, which greatly improves the work efficiency. At the same time, it also ensures the continuity and integrity of the samples, which is helpful for subsequent experimental detection.

[0020] Furthermore, the fixing mechanism includes a concave frame fixedly connected to the front end center of the mounting base, a plurality of limit rods are fixedly connected between the two sides of the mounting base, a two-way threaded rod is rotatably connected to the central front end of the mounting base, a slider is slidably connected between each two of the limit rods, the inner end surfaces of the two sliders are fixedly connected to a fixing block, the two sliders are threadedly connected to the two-way threaded rod, one end of the two-way threaded rod is fixedly connected to a handwheel, the two fixing blocks are respectively close to the two sides of adjacent drill pipes, and a guide sleeve is fixedly connected to the top center of the concave frame.

[0021] Through the above technical solution, when it is necessary to remove the core pipe or install a new drill pipe, the first drill pipe under the ground needs to be fixed. The staff turns the hand wheel so that the hand wheel rotates to drive the two-way threaded rod, thereby driving the two sliders to move toward each other, and then driving the two fixed blocks to move toward each other and squeeze the adjacent drill pipes to fix the drill pipes. At this time, the core pipe is taken out by the driving mechanism, and the new drill pipe is installed on the top of the underground drill pipe by the driving mechanism. At the same time, the guide sleeve is convenient for positioning and docking the new drill pipe, so as to facilitate the connection of the two drill pipes.

[0022] The beneficial effects of the present invention are as follows: (1) The present invention designs a drill pipe, a core pipe and a connecting mechanism, wherein the core pipe is threadedly connected to the connecting mechanism, and the core pipe is threadedly connected to the drill pipe through the connecting mechanism, so that each assembly or disassembly is relatively simple. At the same time, when the staff takes out the core pipe, it can be quickly disassembled into two connected half pipes, and then the geological sample can be quickly taken out, which greatly improves the work efficiency and ensures the continuity and integrity of the sample, which is helpful for subsequent experimental detection; (2) The present invention designs a lifting mechanism, a driving mechanism and a fixing mechanism, and the fixing mechanism can quickly fix the drill pipe, which is convenient for removing the core pipe in the drill pipe and installing a new drill pipe. The lifting mechanism and the driving mechanism can be used to drill geological samples of different depths, so that the geological type, composition, structure and characteristics of each stratum can be analyzed, which greatly improves the comprehensiveness of the experimental detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a first-view appearance diagram of the present invention; Figure 2 is a second viewing angle appearance diagram of the present invention; Figure 3 It is a front view of the present invention; Figure 4 is a cross-sectional view of the present invention; Figure 5 It is a schematic diagram of the driving mechanism structure of the present invention; Figure 6 It is a partial mechanism expansion diagram of the present invention; Figure 7is an exploded view of the core tube of the present invention; Figure 8 for Figure 4 A partial enlarged view of the middle A; Fig. 9 for Figure 4 A partial enlarged view of point B in the middle; Fig.10 for Figure 2 A partial enlarged view of point C in the middle; Fig.11 for Figure 4 A partial enlarged view of point D in the middle.

[0024] Figure numerals: 1, mounting base; 2, lifting mechanism; 201, fixing frame; 202, screw rod; 203, first motor; 204, slide rail; 205, nut seat; 206, connecting plate; 207, slide bar; 3, driving mechanism; 301, second motor; 302, fixing sleeve; 303, through hole; 304, snap ring; 305, first external thread; 306, connecting sleeve; 307, water pipe; 4, drill pipe; 41, first internal thread; 42, second external thread; 5, connecting mechanism; 501, first connector; 502, Second internal thread; 503, third external thread; 504, second connector; 505, drainage hole; 506, fourth external thread; 6, core tube; 61, connecting half tube; 611, slot; 612, clamping block; 62, third internal thread; 63, fifth external thread; 64, holder; 65, fourth internal thread; 7, drill bit; 8, fixing mechanism; 801, concave frame; 802, limit rod; 803, bidirectional threaded rod; 804, slider; 805, fixing block; 806, hand wheel; 807, guide sleeve. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] like Figure 1-Figure 11As shown, a sampling device for engineering geological exploration in this embodiment includes a mounting base 1, the top center of the mounting base 1 is fixedly connected to a lifting mechanism 2, the lifting mechanism 2 includes a fixing frame 201 fixedly connected to the top center of the mounting base 1, a screw rod 202 is installed in the center of the fixing frame 201, a first motor 203 is fixedly installed on the top of the fixing frame 201, the bottom end of the output shaft of the first motor 203 is fixedly connected to the top of the screw rod 202, a slide rail 204 is fixedly connected to the center of the fixing frame 201 and on both sides close to the screw rod 202, a nut seat 205 is spirally connected to the screw rod 202, the front end of the nut seat 205 is fixedly connected to a connecting plate 206, and the rear end of the connecting plate 206 is fixedly connected to two slide bars 207, and the two slide bars 207 are respectively connected to the corresponding The slide rail 204 is slidably connected. When the drill pipe 4, the core tube 6 and the drill bit 7 are installed and the ground is drilled, the first motor 203 is started. The first motor 203 drives the screw rod 202 to rotate by rotating the output shaft, and then drives the nut seat 205 to move downward. The nut seat 205 slides on the two slide rails 204 through two slide bars 207 and has a certain stability. The nut seat 205 moves downward to drive the connecting plate 206 to move, and then drives the driving mechanism 3 to move downward, and then drives the drill pipe 4, the core tube 6 and the drill bit 7 to drill downward. When the core tube 6 is removed or another drill pipe 4 is installed, it is necessary to drive the driving mechanism 3 to move upward through the lifting mechanism 2 to provide space for removing the core tube 6 or installing another drill pipe 4 to facilitate the operation of the staff.

[0027] like Figure 1-Figure 8As shown, a driving mechanism 3 is installed on the lifting mechanism 2, and the driving mechanism 3 includes a second motor 301 fixedly connected to the front end of the connecting plate 206, the outside of the output shaft of the second motor 301 is fixedly connected with a fixing sleeve 302, the inner center of the fixing sleeve 302 is provided with a plurality of annular through holes 303, the outer center of the fixing sleeve 302 is fixedly connected with a retaining ring 304, the bottom end of the outer wall of the fixing sleeve 302 is provided with a first external thread 305, a connecting sleeve 306 is sleeved between the fixing sleeve 302 and the output shaft of the second motor 301, the bottom end of the connecting sleeve 306 cooperates with the retaining ring 304, and the outer wall of the connecting sleeve 306 is fixedly connected with a water pipe 307. When drilling the ground, firstly connect the water pipe 307 to the external water pump, start the second motor 301, so that the second motor 301 drives the fixing sleeve 302 to rotate through the rotation of the output shaft, thereby driving the multiple connected drill pipes 4 to rotate, and then driving the drill bit 7 at the bottom. The drill bit 7 rotates to realize underground drilling, and the geological samples obtained by drilling are collected through the core tube 6. During the rotation of the drill bit 7, the external water pump transports the pumped water into the connecting sleeve 306 through the water pipe 307, and transports it into the connected drill pipe 4 through multiple through holes 303, and finally transports it to the drill bit 7, which can not only cool the drill bit 7, but also help the integrity of the collected geological samples. When it is necessary to drill deeper geological samples into the ground again, it is necessary to install another drill pipe 4 on the original drill pipe 4, and drive the fixing sleeve 302 to move upward to the specified position through the lifting mechanism 2, and align the bottom end of the new drill pipe 4 with the top of the fixing mechanism 8 and insert it, so that the bottom end of the new drill pipe 4 is aligned with the top of the underground drill pipe 4, and the fixing sleeve 302 is driven to rotate by the second motor 301, thereby driving the new drill pipe 4, so that the new drill pipe 4 is threadedly connected to the underground drill pipe 4, and the assembly connection of the drill pipe 4 through the driving mechanism 3 saves time and effort.

[0028] like Figure 1-Figure 6 As shown, a plurality of drill pipes 4 are installed at the bottom of the driving mechanism 3, the top of the inner wall of the drill pipe 4 is provided with a first internal thread 41, and the bottom of the outer wall of the drill pipe 4 is provided with a second external thread 42, one of the drill pipes 4 is threadedly connected to the first external thread 305 at the bottom end of the outer wall of the fixing sleeve 302 through the first internal thread 41, and two drill pipes 4 are threadedly connected to the corresponding second external thread 42 through the first internal thread 41 respectively, and another drill pipe 4 is threadedly connected to the drill bit 7 through the second external thread 42, and the new drill pipe 4 is threadedly connected to the first internal thread 41 at the top end of the underground drill pipe 4 through the second external thread 42 at the bottom. Similarly, multiple drill pipes 4 can be connected, so that the staff can drill geological samples at different depths, so as to analyze the geological type, composition, structure and characteristics of each stratum, which greatly improves the comprehensiveness of experimental detection.

[0029] like Figure 1-Figure 9As shown, a connecting mechanism 5 is installed at the bottom end of one of the drill pipes 4, and the connecting mechanism 5 includes a first connecting head 501 arranged at the bottom of one of the drill pipes 4, a second internal thread 502 is provided at the top of the inner wall of the first connecting head 501, a third external thread 503 is provided at the bottom end of the outer wall of the first connecting head 501, and a second connecting head 504 is fixedly connected to the bottom end of the first connecting head 501, and a plurality of annularly distributed drainage holes 505 are opened at a position between the first connecting head 501 and the second connecting head 504, and a fourth external thread 506 is provided at the bottom end of the outer wall of the second connecting head 504. When installing the core tube 6, first place the core tube 6 into the drill pipe 4, connect it to the core tube 6 through the fourth external thread 506 at the bottom end of the outer wall of the second connecting head 504, and then connect the third external thread 503 at the bottom end of the outer wall of the first connecting head 501 to the drill pipe 4 Then, the core tube 6 is installed inside the drill pipe 4, and finally the first connector 501 is connected to the driving mechanism 3 or the new drill pipe 4 through the second internal thread 502. The connectivity is strong. At the same time, when the device is working, the water in the drill pipe 4 flows to the next section of the drill pipe 4 through multiple drainage holes 505. The first connector 501 is threadedly connected to the second external thread 42 of the drill pipe 4 near the top through the second internal thread 502, and the first connector 501 is threadedly connected to the second external thread 42 of the drill pipe 4 near the bottom through the third external thread 503. When it is necessary to take out the core tube 6, first rotate the top of the outer wall of the first connector 501, remove the first connector 501 and the core tube 6 together, and then continue to rotate the first connector 501 to remove the core tube 6 from the first connector 501, and the core tube 6 can be opened to take out the geological sample.

[0030] like Figure 1-Figure 7As shown, a core tube 6 is installed at the bottom of the connecting mechanism 5, and the core tube 6 is located inside one of the drill pipes 4. The core tube 6 includes two connecting half tubes 61, each of which is provided with a card slot 611, and each of the two connecting half tubes 61 is fixedly connected with a card block 612. The top of the inner wall between the two connecting half tubes 61 is provided with a third internal thread 62, and the outer bottom end between the two connecting half tubes 61 is provided with a fifth external thread 63. A card seat 64 is installed at the bottom end of the two connecting half tubes 61, and the bottom end of the inner wall of the card seat 64 is provided with a fourth internal thread 65. When it is necessary to take out the geological sample in the core tube 6, the connecting mechanism 5 is first disassembled, and then the card seat 64 is rotated so that the card seat 64 is removed from the two connecting half tubes 61. When the two connecting half tubes 61 are forcefully pried apart, the geological sample between the two connecting half tubes 61 can be taken out. When it is necessary to continue drilling underground, the two cleaned connecting tubes 61 are placed on the bottom end of the two connecting half tubes. The half-tubes 61 are combined so that the two clamping blocks 612 fit with the corresponding clamping grooves 611, and then the clamping seat 64 is threadedly connected with the fifth external thread 63 through the fourth internal thread 65, and then the connecting mechanism 5 is installed, so that the two connecting half-tubes 61 and the connecting mechanism 5 are installed together inside the drill pipe 4, and the two connecting half-tubes 61 fit with the corresponding clamping blocks 612 and the corresponding clamping grooves 611 respectively, and the clamping seat 64 is threadedly connected with the fifth external thread 63 between the two connecting half-tubes 61 through the fourth internal thread 65, and the first connector 501 is threadedly connected with the third internal thread 62 between the two connecting half-tubes 61 through the fourth external thread 506. When the staff takes out the core tube 6, it can be quickly disassembled into the two connecting half-tubes 61, and then the geological sample can be quickly taken out, which greatly improves the work efficiency, and at the same time ensures the continuity and integrity of the sample, which is helpful for subsequent experimental detection.

[0031] like Figure 1-Figure 11As shown, a drill bit 7 is installed at the bottom end of another drill pipe 4, and a fixing mechanism 8 is fixedly connected to the front center of the mounting base 1. The fixing mechanism 8 includes a concave frame 801 fixedly connected to the front center of the mounting base 1, and a plurality of limit rods 802 are fixedly connected between the two sides of the mounting base 1. A two-way threaded rod 803 is rotatably connected to the central front end of the mounting base 1, and a slider 804 is slidably connected between each two limit rods 802. The inner end surfaces of the two sliders 804 are fixedly connected to a fixing block 805. The two sliders 804 are both threadedly connected to the two-way threaded rod 803. One end of the two-way threaded rod 803 is fixedly connected to a handwheel 806. The two fixing blocks 805 are respectively close to the two sides of the adjacent drill pipe 4. On the side, a guide sleeve 807 is fixedly connected to the top center of the concave frame 801. When it is necessary to take out the core pipe 6 or install a new drill pipe 4, it is necessary to first fix the first drill pipe 4 underground. The staff turns the hand wheel 806 to make the hand wheel 806 rotate and drive the two-way threaded rod 803, thereby driving the two sliders 804 to move toward each other, and then driving the two fixed blocks 805 to move toward each other and squeeze the adjacent drill pipes 4, so that the drill pipes 4 are fixed. At this time, the core pipe 6 is taken out by the driving mechanism 3, and the new drill pipe 4 is installed on the top of the underground drill pipe 4 by the driving mechanism 3. At the same time, the guide sleeve 807 is convenient for positioning and docking the new drill pipe 4, so as to facilitate the connection of the two drill pipes 4.

[0032] The working principle of this embodiment is as follows: the staff fixes the entire device on the mobile device through the mounting base 1. When it is necessary to drill underground, firstly, the assembled core tube 6 is threadedly connected with the fourth external thread 506 at the bottom end of the outer wall of the second connector 504 through the third internal thread 62, and then the core tube 6 and the connecting mechanism 5 are threadedly connected with the first internal thread 41 in the drill pipe 4 through the third external thread 503, and then the drill bit 7 is threadedly connected with the second external thread 42 at the bottom end of the drill pipe 4, and finally the second internal thread 502 in the first connector 501 is threadedly connected with the first external thread 305 at the bottom end of the fixed sleeve 302, and then the connecting sleeve 306 is sleeved on the retaining ring 304, and finally the fixed sleeve 302 is fixedly connected with the second motor 301, so as to realize the combined installation of the core tube 6, the connecting mechanism 5, the drill pipe 4, the drill bit 7 and the driving mechanism 3, and finally the external water pump is connected with the water pipe 307; The second motor 301 is started, so that the second motor 301 drives the fixing sleeve 302 to rotate through the output shaft rotation, thereby driving the multiple connected drill pipes 4 to rotate, and then driving the bottom drill bit 7 to rotate, and then the first motor 203 is started, and the first motor 203 drives the screw rod 202 to rotate through the output shaft rotation, thereby driving the nut seat 205 to move downward, and then driving the driving mechanism 3 to move downward, and then driving the drill pipe 4, the core pipe 6 and the drill bit 7 to drill downward, so as to achieve underground drilling, and the geological samples obtained by drilling are collected through the core pipe 6. During the rotation of the drill bit 7, the external water pump transports the pumped water into the connecting sleeve 306 through the water pipe 307, and transports it into the connected drill pipe 4 through the multiple through holes 303, and finally transports it to the drill bit 7 to cool the drill bit 7; After drilling the underground sample, the staff rotates the hand wheel 806, so that the hand wheel 806 rotates to drive the bidirectional threaded rod 803, thereby driving the two sliders 804 to move toward each other, and then driving the two fixing blocks 805 to move toward each other, and squeeze the adjacent drill pipe 4, so that the drill pipe 4 is fixed, and the driving mechanism 3 rotates in the opposite direction to drive the connecting mechanism 5 and the core tube 6 to rotate, and then the lifting mechanism 2 rises to separate the connecting mechanism 5 and the core tube 6 from the connected drill pipe 4, and then manually rotates the connecting mechanism 5 to remove the core tube 6 from the connecting mechanism 5, and then rotates the clamping seat 64 to remove the clamping seat 64 from the two connecting half pipes 61, and then forcefully pry the two connecting half pipes 61 apart to take out the geological sample between the two connecting half pipes 61; When it is necessary to continue drilling underground, the two cleaned connecting half pipes 61 are merged so that the two clamping blocks 612 fit into the corresponding clamping grooves 611, and then the clamping seat 64 is threadedly connected with the fifth external thread 63 through the fourth internal thread 65, and then assembled and connected with the connecting mechanism 5, and then the connected connecting mechanism 5 and the core tube 6 are placed into the drill pipe 4 under the ground, and are tightened and fixed with the drill pipe 4, and then a new drill pipe 4 is taken, and the bottom end of the new drill pipe 4 is aligned with the top of the guide sleeve 807 and inserted, so that the bottom end of the new drill pipe 4 is aligned with the top of the drill pipe 4 under the ground, and the new drill pipe 4 is lifted and lowered. The mechanism 2 drives the fixing sleeve 302 to slowly approach the top of the new drill pipe 4, and then drives the fixing sleeve 302 to rotate through the second motor 301, thereby driving the new drill pipe 4, so that the new drill pipe 4 is threadedly connected with the underground drill pipe 4, and then continues to drive the fixing sleeve 302 to rotate and assemble and connect with the drill pipe 4 through the second motor 301, so that the underground drill pipe 4 is connected with the replaced core pipe 6 and the new drill pipe 4, and then drives the second motor 301 and the lifting mechanism 2 to realize deep drilling into the ground. Similarly, take out the core pipe 6 and add a new drill pipe 4 to obtain geological samples of different layers.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A sampling device for engineering geological exploration, comprising a mounting frame (1), characterized in that: A lifting mechanism (2) is fixedly connected to the top center of the installation base frame (1), and a driving mechanism (3) is installed on the lifting mechanism (2); A plurality of drill pipes (4) are installed at the bottom of the driving mechanism (3), a connecting mechanism (5) is installed at the bottom end of one of the drill pipes (4), the connecting mechanism (5) comprises a first connector (501) arranged at the bottom of one of the drill pipes (4), a second internal thread (502) is provided at the top end of the inner wall of the first connector (501), a third external thread (503) is provided at the bottom end of the outer wall of the first connector (501), a second connector (504) is fixedly connected to the bottom end of the first connector (501), a plurality of drainage holes (505) distributed in an annular pattern are provided between the first connector (501) and the second connector (504), a fourth external thread (506) is provided at the bottom end of the outer wall of the second connector (504), a core tube (6) is installed at the bottom of the connecting mechanism (5), and the core tube (6) is located inside one of the drill pipes (4); A drill bit (7) is installed at the bottom end of the other drill pipe (4), and a fixing mechanism (8) is fixedly connected to the center of the front end of the mounting base (1).

2. A sampling device for engineering geological exploration according to claim 1, characterized in that: The lifting mechanism (2) comprises a fixing frame (201) fixedly connected to the top center of the mounting base (1); a lead screw (202) is installed at the center of the fixing frame (201); a first motor (203) is fixedly installed at the top of the fixing frame (201); the bottom end of the output shaft of the first motor (203) is fixedly connected to the top of the lead screw (202); a slide rail (204) is fixedly connected to both sides of the center of the fixing frame (201) and close to the lead screw (202); a nut seat (205) is spirally connected to the lead screw (202); a front end of the nut seat (205) is fixedly connected to a connecting plate (206); a rear end of the connecting plate (206) is fixedly connected to two slide bars (207); the two slide bars (207) are respectively slidably connected to corresponding slide rails (204).

3. A sampling device for engineering geological exploration according to claim 2, characterized in that: The driving mechanism (3) comprises a second motor (301) fixedly connected to the front end of the connecting plate (206); a fixing sleeve (302) is fixedly connected to the outside of the output shaft of the second motor (301); a plurality of annularly distributed through holes (303) are provided in the inner center of the fixing sleeve (302); a snap ring (304) is fixedly connected to the outer center of the fixing sleeve (302); a first external thread (305) is provided at the bottom end of the outer wall of the fixing sleeve (302); a connecting sleeve (306) is sleeved between the fixing sleeve (302) and the output shaft of the second motor (301); the bottom end of the connecting sleeve (306) cooperates with the snap ring (304); and a water pipe (307) is fixedly connected to the outer wall of the connecting sleeve (306).

4. A sampling device for engineering geological exploration according to claim 3, characterized in that: The top end of the inner wall of the drill pipe (4) is provided with a first internal thread (41), and the bottom end of the outer wall of the drill pipe (4) is provided with a second external thread (42), one of the drill pipes (4) is threadedly connected to the first external thread (305) at the bottom end of the outer wall of the fixing sleeve (302) via the first internal thread (41), two of the drill pipes (4) are threadedly connected to the corresponding second external thread (42) via the first internal thread (41), and the other drill pipe (4) is threadedly connected to the drill bit (7) via the second external thread (42).

5. A sampling device for engineering geological exploration according to claim 4, characterized in that: The first connector (501) is threadedly connected to the second external thread (42) of the drill pipe (4) near the top via the second internal thread (502), and the first connector (501) is threadedly connected to the second external thread (42) of the drill pipe (4) near the bottom via the third external thread (503).

6. The sampling device for engineering geological exploration according to claim 1, characterized in that: The core sampling tube (6) comprises two connecting half tubes (61), each of the two connecting half tubes (61) is provided with a clamping groove (611), each of the two connecting half tubes (61) is fixedly connected with a clamping block (612), a third internal thread (62) is provided at the top of the inner wall between the two connecting half tubes (61), a fifth external thread (63) is provided at the bottom end of the outer wall between the two connecting half tubes (61), a clamping seat (64) is installed at the bottom end of the two connecting half tubes (61), and a fourth internal thread (65) is provided at the bottom end of the inner wall of the clamping seat (64).

7. The sampling device for engineering geological exploration according to claim 6, characterized in that: The two connecting half-tubes (61) are respectively engaged with corresponding clamping blocks (612) and corresponding clamping grooves (611); the clamping seat (64) is threadedly connected to the fifth external thread (63) between the two connecting half-tubes (61) via a fourth internal thread (65); and the first connector (501) is threadedly connected to the third internal thread (62) between the two connecting half-tubes (61) via a fourth external thread (506).

8. The sampling device for engineering geological exploration according to claim 1, characterized in that: The fixing mechanism (8) comprises a concave frame (801) fixedly connected to the front end center of the mounting base (1); a plurality of limit rods (802) are fixedly connected between the two sides of the mounting base (1); a bidirectional threaded rod (803) is rotatably connected to the central front end of the mounting base (1); a slider (804) is slidably connected between each two limit rods (802); inner end surfaces of the two sliders (804) are fixedly connected to a fixing block (805); the two sliders (804) are threadedly connected to the bidirectional threaded rod (803); one end of the bidirectional threaded rod (803) is fixedly connected to a hand wheel (806); the two fixing blocks (805) are respectively close to the two sides of the adjacent drill pipe (4); and a guide sleeve (807) is fixedly connected to the top center of the concave frame (801).

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