A soil sampling device for highway inspection

Abstract

The invention relates to the technical field of soil sampling, and discloses a soil sampling device for highway inspection, which comprises a device mounting seat and a sampling tube, wherein four rollers are mounted on the bottom of the device mounting seat, two pairs of insertion rods are symmetrically mounted on the surface of the device mounting seat, a rotating bearing is mounted on the middle of the top of the device mounting seat, a circular through hole coincides with the axis of the rotating bearing, a rotating tube is fixedly mounted inside the inner ring of the rotating bearing, a limit bearing is mounted on the top of the rotating tube, an internal thread lifting and adjusting tube is fixedly mounted inside the inner ring of the limit bearing, a power motor driven by the rotating tube is mounted on the top of the device mounting seat, and a limit component is mounted inside the rotating tube; the soil sampling device has a compact structure and is convenient for carrying and moving, and a drill rod has a multi-section structure and can be conveniently disassembled, connected and fixed, and the multi-section drill rod has a sample pushing structure, thereby ensuring the convenience and integrity of sample removal.

Description

Technical Field

[0001] The invention belongs to the technical field of soil sampling, in particular to a soil sampling device for highway detection. Background Art

[0002] Highway soil sampling is used to collect highway subgrade soil samples. Highway soil testing can help engineers and scientific researchers analyze and test the physical and chemical properties of highway subgrade soil. Highway soil testing has important application value in the field of highway construction and maintenance. It can help engineers and technicians better understand the characteristics of subgrade soil, thereby guiding engineering practice and ensuring the safety and reliability of highways.

[0003] In highway inspections, the depth of soil sampling usually varies according to specific inspection standards, soil types and engineering requirements. During the design and construction of the roadbed, the soil sampling depth is generally 0.5 to 1 meter, which can usually reflect the soil characteristics of the roadbed and ensure the accuracy of the design parameters. When conducting foundation bearing capacity tests, the sampling depth is generally 1 to 2 meters, and the specific depth may be adjusted according to geological conditions and engineering requirements.

[0004] The existing soil sampling equipment used for highway inspection is generally large in structure, and its sampling drill rod is long. The large structure and long drill rod are inconvenient to carry and move, and it is also inconvenient to disassemble and assemble the drill rod and take out the sample. Therefore, in view of the above problems, it is necessary to design a soil sampling device for highway inspection. Summary of the invention

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a soil sampling device for highway inspection, comprising a device mounting seat and a sampling tube, wherein four rollers for movement are mounted on the bottom of the device mounting seat, two pairs of insertion rods for inserting into the soil for fixing are symmetrically mounted on the surface of the device mounting seat, a circular through hole is opened in the middle of the device mounting seat, a rotating bearing is mounted in the middle of the top of the device mounting seat, the circular through hole coincides with the axis of the rotating bearing, a rotating tube is fixedly mounted inside the inner ring of the rotating bearing, a limited bearing is mounted on the top of the rotating tube, an internally threaded lifting and lowering adjusting tube is fixedly mounted inside the inner ring of the limited bearing, and the top of the device mounting seat is provided with a plurality of rotating tubes, wherein the plurality of rotating tubes are ... A power motor that drives the rotating tube is installed at the bottom, two operating ports are symmetrically opened on the surface of the rotating tube, a limiting component is installed inside the rotating tube, and the sampling tube is installed between the internal thread lifting and adjusting tube and the internal part of the limiting component; the sampling tube is composed of a main sampling drill tube, an expansion sampling tube and a tail sampling tube, and the surfaces of the main sampling drill tube, the expansion sampling tube and the tail sampling tube are provided with matching threads, and the main sampling drill tube, the expansion sampling tube and the tail sampling tube can be threadedly connected with the internal thread lifting and adjusting tube through threads, and the end of the tail sampling tube away from the expansion sampling tube is a closed structure, and the top of the inside of the tail sampling tube is provided with a pushing component for completely removing the sample.

[0006] Preferably, a driving gear is fixedly installed on the output end of the power motor, a rotating gear ring meshing with the driving gear is fixedly installed on the surface of the rotating tube, a limiting gear ring is fixedly installed on the surface of the internal thread lifting and adjusting tube, a vertical plate is fixedly installed on the top of the device mounting seat, and an arc-shaped tooth plate meshing with the limiting gear ring is fixedly installed on the upper part of one side of the vertical plate.

[0007] Preferably, two connecting sockets are symmetrically provided at the bottom of the expansion sampling tube and the tail sampling tube, two connecting pins are symmetrically fixedly installed at the top of the main sampling drill tube and the expansion sampling tube, the connecting pins are movably plugged into the inside of the connecting sockets, and two fixing mechanisms are connected between the main sampling drill tube and the expansion sampling tube, and between the expansion sampling tube and the tail sampling tube.

[0008] Preferably, the fixing mechanism includes a connecting hook groove, an installation groove and a hook, the connecting hook groove is symmetrically opened at the top of the main sampling drill tube and the expansion sampling tube, the installation groove is symmetrically opened at the bottom of the expansion sampling tube and the tail sampling tube, the hook is rotatably connected to the inside of the installation groove, and the hook end of the hook is hooked to the inside of the connecting hook groove, the inside of the installation groove is provided with an extrusion linkage block, the lower part of the extrusion linkage block is provided with an inclined groove, the hook is fixedly connected to the inside of the installation groove with a toggle block, and the toggle block is located inside the inclined groove.

[0009] Preferably, the lower part of the surface of the expansion sampling tube and the tail sampling tube are symmetrically provided with two grooves aligned with and connected to the mounting groove, and the inside of the groove is installed with a T-shaped rod that can be movably inserted into the mounting groove, the bottom of the T-shaped rod is fixedly connected to the top of the extrusion linkage block, and the surface of the T-shaped rod located inside the groove is sleeved with a corrugated sleeve A and a return spring A, the return spring A is located inside the corrugated sleeve A, and the corrugated sleeve A and the return spring A are fixedly connected between the T-shaped rod and the groove.

[0010] Preferably, the surfaces of the main sampling drill pipe, the expansion sampling tube and the tail sampling tube are symmetrically provided with aligned vertical through grooves, and the vertical through grooves are located on the surfaces of the main sampling drill pipe, the expansion sampling tube and the tail sampling tube. Sliding vertical slots are provided on the surfaces of the main sampling drill pipe, the expansion sampling tube and the tail sampling tube.

[0011] Preferably, the pushing component includes a push block slidably installed on the top of the tail sampling tube, and the upper and lower parts of the push block are provided with through holes. The upper part of the tail sampling tube is symmetrically provided with two mounting holes aligned with the upper through holes of the push block, and the mounting holes are aligned with the vertical through groove and the sliding vertical slot, and a fixed pin is movably inserted between the two mounting holes and the inside of the through hole.

[0012] Preferably, the limiting component includes two fixed hollow boxes symmetrically fixedly installed inside the rotating tube, and the upper parts of the opposite sides of the two fixed hollow boxes are provided with connecting ports. The interiors of the two fixed hollow boxes are slidably installed with inverted T-shaped sliders located inside the connecting ports. A bellows B and a return spring B are fixedly connected between the bottom of the inverted T-shaped slider and the bottom of the interior of the fixed hollow box. The return spring B is located inside the bellows B. A ring is fixedly installed between the opposite ends of the two inverted T-shaped sliders, and two limiting sliders that are matched and aligned with the sliding vertical slots are symmetrically fixedly installed inside the ring.

[0013] Preferably, an inverted U-shaped plate is fixedly installed on the top of the device mounting seat, and the middle parts of the two ends of the inverted U-shaped plate are rotatably connected with rotating shafts, and the ends of the two rotating shafts located on the inner side of the inverted U-shaped plate are fixedly installed with eccentric wheels, and a rectangular lifting adjustment frame is fixedly installed between the tops of each pair of insertion rods, and the two eccentric wheels are respectively located inside the two rectangular lifting adjustment frames, and the ends of the two rotating shafts located on the outer sides of the inverted U-shaped plates are fixedly installed with secondary sprockets.

[0014] Preferably, a transmission rod is rotatably connected to the middle part of the outer side of the inverted U-shaped plate, main sprockets are fixedly installed at both ends of the transmission rod, chains are installed between the relative secondary sprockets and the main sprocket, a worm wheel is fixedly installed in the middle part of the transmission rod, a worm screw meshing with the worm wheel is rotatably connected between the middle part of the outer side of the inverted U-shaped plate and the top of the device mounting seat, and an adjusting wheel is fixedly installed on one side of the worm screw.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) During operation, the soil sampling device is compact and convenient to carry and move by providing a device mounting seat, a roller, an insertion rod, a rotating bearing, a rotating tube, a limit bearing, an internal thread lifting and adjusting tube, a power motor, an operating port, a limit component and a sampling tube. At the same time, the drill rod of the soil sampling device is a multi-section structure, and the multi-section drill rod can be conveniently disassembled, connected and fixed, thereby effectively ensuring the stability of soil sampling. At the same time, the multi-section drill rod is provided with a sample pushing structure, thereby ensuring the convenience and integrity of sample removal. In addition, the soil sampling device has a simple structural design, is convenient to use and adjust, and has a stable and reliable sampling operation. Its performance can meet the use requirements of highway soil sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0018] In the attached picture:

[0019] Figure 1 It is a front view structural schematic diagram of the soil sampling device for highway detection of the present invention;

[0020] Figure 2 It is a rear view structural schematic diagram of the soil sampling device for highway detection of the present invention;

[0021] Figure 3 For the present invention Figure 1 A schematic diagram of a partial cross-sectional structure;

[0022] Figure 4 For the present invention Figure 2 Schematic diagram of the local structure;

[0023] Figure 5 For the present invention Figure 1 Schematic diagram of the local structure;

[0024] Figure 6 For the present invention Figure 5 A schematic cross-sectional structure diagram of ;

[0025] Figure 7 For the present invention Figure 6 The local structure of Figure 1 ;

[0026] Figure 8 For the present invention Figure 7 Schematic diagram of the expanded structure;

[0027] Fig. 9 For the present invention Figure 8 A schematic diagram of a side cross-section structure;

[0028] Fig.10 This is a schematic diagram of the sampling tube structure of the present invention;

[0029] Fig.11 For the present invention Fig.10 A schematic cross-sectional structure diagram of ;

[0030] Fig.12 For the present invention Fig.11 Schematic diagram of the local structure;

[0031] Fig.13 For the present invention Figure 6 The local structure of Figure 2 ;

[0032] In the figure: 1, device mounting seat; 2, roller; 3, plug rod; 4, rotating bearing; 5, rotating tube; 6, limit bearing; 7, internal thread lifting and adjusting tube; 8, power motor; 9, operation port; 10, limit component; 11, main sampling drill pipe; 12, expansion sampling tube; 13, tail sampling tube; 14, driving gear; 15, rotating gear ring; 16, limit gear ring; 17, vertical plate; 18, arc-shaped card tooth plate; 19, connecting jack; 20, connecting pin; 21, connecting hook groove; 22, mounting groove; 23, hook; 2301, extrusion linkage block; 24, inclined groove; 25, toggle block; 26, concave slot; 27, T-shaped rod; 28, corrugated sleeve A; 29, reset spring A; 30, vertical through slot; 31, sliding vertical slot; 32, push block; 33, through hole; 34, mounting hole; 35, fixed latch; 36, fixed hollow box; 37, connecting port; 38, inverted T-shaped slider; 39, bellows B; 40, reset spring B; 41, ring; 42, limit slider; 43, inverted U-shaped plate; 44, rotating shaft; 45, eccentric wheel; 46, rectangular lifting adjustment frame; 47, secondary sprocket; 48, transmission rod; 49, main sprocket; 50, chain; 51, worm wheel; 52, worm; 53, adjusting wheel. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Embodiment 1, by Figures 1 to 13The present invention comprises a device mounting seat 1 and a sampling tube, four rollers 2 for movement are installed at the bottom of the device mounting seat 1, two pairs of insertion rods 3 for inserting into the soil for fixing are symmetrically installed on the surface of the device mounting seat 1, a circular through hole is opened in the middle of the device mounting seat 1, a rotating bearing 4 is installed in the middle of the top of the device mounting seat 1, the circular through hole coincides with the axis of the rotating bearing 4, a rotating tube 5 is fixedly installed inside the inner ring of the rotating bearing 4, a limiting bearing 6 is installed on the top of the rotating tube 5, an internal thread lifting and adjusting tube 7 is fixedly installed inside the inner ring of the limiting bearing 6, a power motor 8 for transmission with the rotating tube 5 is installed on the top of the device mounting seat 1, two operating ports 9 are symmetrically opened on the surface of the rotating tube 5, a limiting component 10 is installed inside the rotating tube 5, and the sampling tube is installed between the internal thread lifting and adjusting tube 7 and the inside of the limiting component 10.

[0035] The sampling tube is composed of a main sampling drill tube 11, an expansion sampling tube 12 and a tail sampling tube 13. Multiple expansion sampling tubes 12 can be prepared according to actual conditions, so as to lengthen the sampling tube and facilitate sampling at different depths. The surfaces of the main sampling drill tube 11, the expansion sampling tube 12 and the tail sampling tube 13 are provided with matching threads. The main sampling drill tube 11, the expansion sampling tube 12 and the tail sampling tube 13 can be threadedly connected with the internal thread lifting and adjusting tube 7 through threads. The end of the tail sampling tube 13 away from the expansion sampling tube 12 is a closed structure, and the top of the tail sampling tube 13 is provided with a pushing component for completely removing the sample.

[0036] A driving gear 14 is fixedly installed at the output end of the power motor 8, a rotating ring gear 15 meshing with the driving gear 14 is fixedly installed on the surface of the rotating tube 5, a limiting ring gear 16 is fixedly installed on the surface of the internal thread lifting and adjusting tube 7, a vertical plate 17 is fixedly installed on the top of the device mounting seat 1, and an arc-shaped tooth plate 18 meshing with the limiting ring gear 16 is fixedly installed on the upper part of one side of the vertical plate 17, so that the main sampling drill pipe 11, the expansion sampling tube 12 and the tail sampling tube 13 can be effectively rotated and adjusted and moved downward to perform sampling operations.

[0037] By starting the power motor 8, the driving gear 14 drives the rotating ring gear 15 to rotate, and the rotation of the rotating ring gear 15 drives the rotating tube 5 to rotate through the rotating bearing 4 and the limit bearing 6. At the same time, due to the meshing of the arc-shaped clamping plate 18 with the limit ring gear 16 and the limit bearing 6, the internal thread lifting and adjusting tube 7 will not rotate;

[0038] The rotation of the rotating tube 5 will drive the main sampling drill pipe 11, the expansion sampling tube 12 and the tail sampling tube 13 to rotate through the limiting component 10, and the rotation of the main sampling drill pipe 11, the expansion sampling tube 12 and the tail sampling tube 13 will move downward inside the internal thread lifting and adjusting tube 7 and the limiting component 10 through the thread, so that the main sampling drill pipe 11, the expansion sampling tube 12 and the tail sampling tube 13 move downward during the rotation process and rotate to be inserted into the soil for sampling operation.

[0039] The soil sampling device has a compact structure and is convenient for carrying and moving. At the same time, the drill rod of the soil sampling device has a multi-section structure, and the multi-section drill rod can be conveniently disassembled, connected and fixed, thereby effectively ensuring the stability of soil sampling. At the same time, the multi-section drill rod has a sample pushing structure, thereby ensuring the convenience and integrity of sample removal.

[0040] In addition, the soil sampling device has a simple structural design, is convenient to use and adjust, and has a stable and reliable sampling operation. Its performance can meet the use requirements of highway soil sampling.

[0041] Embodiment 2, on the basis of embodiment 1, two connecting holes 19 are symmetrically provided at the bottom of the expansion sampling tube 12 and the tail sampling tube 13, two connecting pins 20 are symmetrically fixedly installed at the top of the main sampling drill pipe 11 and the expansion sampling tube 12, the connecting pins 20 are movably plugged into the inside of the connecting holes 19, and two fixing mechanisms are connected between the main sampling drill pipe 11 and the expansion sampling tube 12 and between the expansion sampling tube 12 and the tail sampling tube 13.

[0042] The fixing mechanism includes a connecting hooking groove 21, an installation groove 22 and a hook 23. The connecting hooking groove 21 is symmetrically opened at the top of the main sampling drill pipe 11 and the expansion sampling tube 12. The installation groove 22 is symmetrically opened at the bottom of the expansion sampling tube 12 and the tail sampling tube 13. The hook 23 is rotatably connected to the inside of the installation groove 22, and the hook end of the hook 23 is hooked to the inside of the connecting hooking groove 21. An extrusion linkage block 2301 is provided inside the installation groove 22, and an inclined groove 24 is opened at the lower part of the extrusion linkage block 2301. The hook 23 is fixedly connected to the inside of the installation groove 22 with a toggle block 25, and the toggle block 25 is located inside the inclined groove 24.

[0043] Two grooves 26 aligned with and connected to the mounting groove 22 are symmetrically provided on the lower parts of the surfaces of the expansion sampling tube 12 and the tail sampling tube 13. T-shaped rods 27 movably inserted into the mounting groove 22 are installed inside the grooves 26. The bottom of the T-shaped rod 27 is fixedly connected to the top of the extrusion linkage block 2301. The surface of the T-shaped rod 27 located inside the groove 26 is sleeved with a corrugated sleeve A28 and a return spring A29. The return spring A29 is located inside the corrugated sleeve A28. The corrugated sleeve A28 and the return spring A29 are fixedly connected between the T-shaped rod 27 and the groove 26. The T-shaped rod 27 and the corrugated sleeve A28 will not hinder the rotation adjustment, so that the main sampling drill pipe 11, the expansion sampling tube 12 and the tail sampling tube 13 can be effectively connected and disassembled.

[0044] like Fig.11 and Fig.12 As shown, when disassembly is required, first press the T-shaped rod 27 downward to compress the bellows A28 and the return spring A29. The downward movement of the T-shaped rod 27 drives the extrusion linkage block 2301 and the inclined slot 24 to move downward. The downward movement of the inclined slot 24 drives the hook 23 to rotate through the toggle block 25, so that the hook end of the hook 23 is rotated out from the inside of the connecting hook slot 21. At this time, the tail sampling tube 13 or the expansion sampling tube 12 is lifted up to pull the connecting pin 20 out from the inside of the connecting socket 19, and finally the tail sampling tube 13 is separated from the expansion sampling tube 12 and the expansion sampling tube 12 is separated from the main sampling drill pipe 11.

[0045] During installation, the T-shaped rod 27 is also pressed downward to align and connect the connecting pin 20 with the connecting socket 19, and then the T-shaped rod 27 is released. The elastic restoring force of the corrugated sleeve A28 and the reset spring A29 causes the hook end of the hook 23 to be inserted into the inside of the connecting hook groove 21, so that the expansion sampling tube 12 and the main sampling drill pipe 11, as well as the tail sampling tube 13 and the expansion sampling tube 12 are stably and effectively connected.

[0046] Embodiment 3, on the basis of embodiment 2, the surfaces of the main sampling drill pipe 11, the expansion sampling pipe 12 and the tail sampling pipe 13 are symmetrically provided with aligned vertical through grooves 30, the vertical through grooves 30 are located on the surfaces of the main sampling drill pipe 11, the expansion sampling pipe 12 and the tail sampling pipe 13, and sliding vertical slots 31 are provided, the pushing component includes a push block 32 slidably mounted on the top of the tail sampling pipe 13, the upper and lower parts of the push block 32 are provided with through holes 33, the upper part of the tail sampling pipe 13 is symmetrically provided with two mounting holes 34 aligned with the upper through holes 33 of the push block 32, and the mounting holes 34 are aligned with the vertical through grooves 30 and the sliding vertical slots 31, and the two mounting holes 34 are movably plugged with fixed pins 35 inside the through holes 33, so that the soil samples inside the main sampling drill pipe 11, the expansion sampling pipe 12 and the tail sampling pipe 13 can be pushed out;

[0047] The fixing pin 35 between the two mounting holes 34 and the through hole 33 is pulled out, and then the fixing pin 35 is inserted into the through hole 33 at the lower part of the push block 32 through the vertical through slot 30 and the sliding vertical slot 31 on the tail sampling tube 13, and then the pushing block 32 is pushed by the fixing pin 35 to move the soil sample inside the tail sampling tube 13, so that the soil sample is squeezed out from the end of the main sampling drill pipe 11, and when the pushing block 32 moves to the lower part of the tail sampling tube 13, the fixing pin 35 is inserted into the through hole 33 at the upper part of the pushing block 32 again, and then the pushing block 32 is continuously pushed until the pushing block 32 is pushed out. The lower part is pushed from the inside of the tail sampling tube 13 to the inside of the expansion sampling tube 12, and then the fixed pin 35 is pulled out from the through hole 33 at the upper part of the push block 32, and the fixed pin 35 is inserted into the through hole 33 at the lower part of the push block 32 through the vertical through groove 30 and the sliding vertical slot 31 on the expansion sampling tube 12, and then the push block 32 is continued to be moved, and the same operation is performed when the push block 32 moves to the inside of the main sampling drill pipe 11, until the soil sample is pushed out from the inside of the tail sampling tube 13, the expansion sampling tube 12 and the main sampling drill pipe 11, and finally the push block 32 is reset to its original position inside the tail sampling tube 13.

[0048] The limiting component 10 includes two fixed hollow boxes 36 symmetrically fixedly installed inside the rotating tube 5, and the upper parts of the opposite sides of the two fixed hollow boxes 36 are provided with connecting ports 37. The interiors of the two fixed hollow boxes 36 are slidably installed with inverted T-shaped sliders 38 located inside the connecting ports 37. A bellows B39 and a return spring B40 are fixedly connected between the bottom of the inverted T-shaped slider 38 and the bottom of the interior of the fixed hollow box 36. The return spring B40 is located inside the bellows B39. A ring 41 is fixedly installed between the opposite ends of the two inverted T-shaped sliders 38. Two limiting sliders 42 that match and align with the sliding vertical slots 31 are symmetrically fixedly installed inside the ring 41, thereby effectively driving the main sampling drill pipe 11, the expansion sampling pipe 12 and the tail sampling pipe 13 to rotate.

[0049] During installation, the main sampling drill pipe 11 is connected to the inside of the internal thread lifting and adjusting tube 7 through a thread, and the main sampling drill pipe 11 is rotated and moved downward, so that the lower part of the main sampling drill pipe 11 moves to the inside of the ring 41. When the limit slider 42 is not aligned with the sliding vertical slot 31, the downward moving main sampling drill pipe 11 will squeeze the ring 41 and move it downward, so that the inverted T-shaped slider 38 compresses the bellows B39 and the return spring B40. After that, when the limit slider 42 is aligned with the sliding vertical slot 31, the elastic restoring force of the bellows B39 and the return spring B40 will cause the inverted T-shaped slider 38, the ring 41 and the limit slider 42 to move up and get stuck in the inside of the sliding vertical slot 31. At this time, the main sampling drill pipe 11 cannot be rotated and adjusted by external force;

[0050] Afterwards, the main sampling drill pipe 11 can be driven to rotate by rotating the rotating tube 5. The rotation of the main sampling drill pipe 11 will rotate and move downward inside the internal thread lifting and adjusting tube 7 through the thread. The downward movement of the main sampling drill pipe 11 will cause the limit slider 42 to slide inside the sliding vertical slot 31, and finally the main sampling drill pipe 11 will move downward during the rotation process and be rotated and inserted into the soil for sampling operation.

[0051] Embodiment 4, on the basis of embodiment 1, an inverted U-shaped plate 43 is fixedly installed on the top of the device mounting seat 1, and the middle parts of the two ends of the inverted U-shaped plate 43 are rotatably connected with rotating shafts 44, and the ends of the two rotating shafts 44 located on the inner side of the inverted U-shaped plate 43 are fixedly installed with eccentric wheels 45, and a rectangular lifting adjustment frame 46 is fixedly installed between the tops of each pair of insertion rods 3, and the two eccentric wheels 45 are respectively located inside the two rectangular lifting adjustment frames 46, and the ends of the two rotating shafts 44 located on the outer side of the inverted U-shaped plate 43 are fixedly installed with secondary sprockets 47.

[0052] A transmission rod 48 is rotatably connected to the middle part of the outer side of the inverted U-shaped plate 43, and main sprockets 49 are fixedly installed at both ends of the transmission rod 48. Chains 50 are installed between the opposite secondary sprockets 47 and the main sprocket 49. A worm wheel 51 is fixedly installed in the middle part of the transmission rod 48. A worm 52 meshing with the worm wheel 51 is rotatably connected between the middle part of the outer side of the inverted U-shaped plate 43 and the top of the device mounting seat 1, and an adjusting wheel 53 is fixedly installed on one side of the worm 52, so that the two insertion rods 3 can be effectively raised and lowered, and the two insertion rods 3 can be effectively inserted into the soil to maintain the stability of the device during sampling.

[0053] When in use, the worm 52 is rotated by adjusting the rotating wheel 53, and the rotation of the worm 52 will transmit the power to the worm wheel 51 and drive the transmission rod 48 to rotate. The rotation of the transmission rod 48 will drive the two main sprockets 49 to rotate. The rotation of the two main sprockets 49 will drive the two secondary sprockets 47 to rotate through the two chains 50. The rotation of the two secondary sprockets 47 will drive the eccentric wheel 45 to rotate through the rotating shaft 44. The rotation of the eccentric wheel 45 will drive the rectangular lifting adjustment frame 46 and the insertion rod 3 to move up or down. The downwardly moved insertion rod 3 can be inserted into the soil to maintain the stability of the device during sampling.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used 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 "include", "comprise" or any other variants 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 also includes elements inherent to such process, method, article or device.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil sampling device for highway inspection, comprising a device mounting seat (1) and a sampling tube, characterized in that: The bottom of the device mounting seat (1) is provided with four rollers (2) for movement, the surface of the device mounting seat (1) is symmetrically provided with two pairs of insertion rods (3) for being inserted into the soil for fixing, a circular through hole is provided in the middle of the device mounting seat (1), a rotating bearing (4) is provided in the middle of the top of the device mounting seat (1), the circular through hole coincides with the axis of the rotating bearing (4), a rotating tube (5) is fixedly provided inside the inner ring of the rotating bearing (4), a limit bearing (6) is provided on the top of the rotating tube (5), an internal thread lifting and adjusting tube (7) is fixedly provided inside the inner ring of the limit bearing (6), a power motor (8) for transmission with the rotating tube (5) is provided on the top of the device mounting seat (1), two operating ports (9) are symmetrically provided on the surface of the rotating tube (5), a limit component (10) is provided inside the rotating tube (5), and a sampling tube is provided between the internal thread lifting and adjusting tube (7) and the inside of the limit component (10); The sampling tube is composed of a main sampling drill tube (11), an expansion sampling tube (12) and a tail sampling tube (13); the surfaces of the main sampling drill tube (11), the expansion sampling tube (12) and the tail sampling tube (13) are provided with matching threads; the main sampling drill tube (11), the expansion sampling tube (12) and the tail sampling tube (13) are all threadedly connected to the internal thread lifting and adjusting tube (7) through the threads; the end of the tail sampling tube (13) away from the expansion sampling tube (12) is a closed structure; and a pushing component for completely removing the sample is provided at the top of the inside of the tail sampling tube (13); A driving gear (14) is fixedly mounted on the output end of the power motor (8); a rotating ring gear (15) meshingly connected to the driving gear (14) is fixedly mounted on the surface of the rotating tube (5); a limiting ring gear (16) is fixedly mounted on the surface of the internal thread lifting and adjusting tube (7); a vertical plate (17) is fixedly mounted on the top of the device mounting seat (1); and an arc-shaped tooth plate (18) meshingly connected to the limiting ring gear (16) is fixedly mounted on the upper part of one side of the vertical plate (17); The bottom of the expansion sampling tube (12) and the tail sampling tube (13) are both symmetrically provided with two connection sockets (19); the tops of the main sampling drill tube (11) and the expansion sampling tube (12) are both symmetrically fixedly provided with two connection pins (20); the connection pins (20) are movably plugged into the inside of the connection sockets (19); and two fixing mechanisms are connected between the main sampling drill tube (11) and the expansion sampling tube (12) and between the expansion sampling tube (12) and the tail sampling tube (13); The fixing mechanism comprises a connecting hooking groove (21), a mounting groove (22) and a hook (23); the connecting hooking groove (21) is symmetrically arranged at the top of the main sampling drill pipe (11) and the expansion sampling pipe (12); the mounting groove (22) is symmetrically arranged at the bottom of the expansion sampling pipe (12) and the tail sampling pipe (13); the hook (23) is rotatably connected to the inside of the mounting groove (22); and the hook end of the hook (23) is hooked to the inside of the connecting hooking groove (21); an extrusion linkage block (2301) is arranged inside the mounting groove (22); an inclined groove (24) is arranged at the lower part of the extrusion linkage block (2301); the hook (23) is located inside the mounting groove (22) and is fixedly connected to a toggle block (25); and the toggle block (25) is located inside the inclined groove (24); The lower parts of the surfaces of the expansion sampling tube (12) and the tail sampling tube (13) are symmetrically provided with two grooves (26) aligned with and connected to the mounting groove (22), and the inside of the grooves (26) is provided with a T-shaped rod (27) movably inserted into the inside of the mounting groove (22), and the bottom of the T-shaped rod (27) is fixedly connected to the top of the extrusion linkage block (2301), and the surface of the T-shaped rod (27) located inside the groove (26) is sleeved with a corrugated sleeve A (28) and a return spring A (29), and the return spring A (29) is located inside the corrugated sleeve A (28), and the corrugated sleeve A (28) and the return spring A (29) are fixedly connected between the T-shaped rod (27) and the groove (26); The surfaces of the main sampling drill pipe (11), the expansion sampling pipe (12) and the tail sampling pipe (13) are all symmetrically provided with aligned vertical through grooves (30), and the vertical through grooves (30) are located on the surfaces of the main sampling drill pipe (11), the expansion sampling pipe (12) and the tail sampling pipe (13) and are all provided with sliding vertical slots (31); The pushing component comprises a pushing block (32) slidably mounted on the top of the tail sampling tube (13), the pushing block (32) having through holes (33) formed on the upper and lower parts thereof, the upper part of the tail sampling tube (13) having two mounting holes (34) symmetrically arranged to be aligned with the through holes (33) on the upper part of the pushing block (32), and the mounting holes (34) are aligned with the vertical through slot (30) and the sliding vertical slot (31), and a fixing pin (35) is movably inserted between the two mounting holes (34) and the inside of the through holes (33); The limiting component (10) comprises two fixed hollow boxes (36) symmetrically fixedly mounted inside the rotating tube (5), the upper parts of the two fixed hollow boxes (36) on opposite sides are each provided with a communication port (37), the interiors of the two fixed hollow boxes (36) are each slidably mounted with an inverted T-shaped slider (38) located inside the communication port (37), a bellows B (39) and a return spring B (40) are fixedly connected between the bottom of the inverted T-shaped slider (38) and the bottom of the interior of the fixed hollow box (36), the return spring B (40) is located inside the bellows B (39), a ferrule (41) is fixedly mounted between opposite ends of the two inverted T-shaped sliders (38), and two limiting sliders (42) that are matched and aligned with the sliding vertical slots (31) are symmetrically fixedly mounted inside the ferrule (41).

2. A soil sampling device for highway testing according to claim 1, characterized in that: An inverted U-shaped plate (43) is fixedly mounted on the top of the device mounting seat (1), and rotating shafts (44) are rotatably connected to the middle parts of both ends of the inverted U-shaped plate (43), and eccentric wheels (45) are fixedly mounted on the ends of the two rotating shafts (44) located inside the inverted U-shaped plate (43), and a rectangular lifting adjustment frame (46) is fixedly mounted between the tops of each pair of insertion rods (3), and the two eccentric wheels (45) are respectively located inside the two rectangular lifting adjustment frames (46), and auxiliary sprockets (47) are fixedly mounted on the ends of the two rotating shafts (44) located outside the inverted U-shaped plate (43).

3. A soil sampling device for highway testing according to claim 2, characterized in that: A transmission rod (48) is rotatably connected to the middle portion of the outer side of the inverted U-shaped plate (43); main sprockets (49) are fixedly mounted on both ends of the transmission rod (48); chains (50) are mounted between the opposite secondary sprockets (47) and the main sprocket (49); a worm wheel (51) is fixedly mounted to the middle portion of the transmission rod (48); a worm (52) meshing with the worm wheel (51) is rotatably connected between the middle portion of the outer side of the inverted U-shaped plate (43) and the top of the device mounting seat (1); and an adjusting rotating wheel (53) is fixedly mounted on one side of the worm wheel (52).

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