Soil sampling method based on road and bridge engineering supervision

Abstract

The invention discloses a soil sampling method based on road and bridge engineering supervision, an electric telescopic rod is fixedly arranged at the top of a mounting rack, one end of the electric telescopic rod extends into the mounting rack, and the invention relates to the technical field of soil sampling. According to the soil sampling method based on road and bridge engineering supervision, a shaping stripping mechanism, a tail end limiting separation mechanism and a centering positioning mechanism are arranged between a transfer frame and a sampling barrel, so that the device can promote a soil sample column in the sampling barrel to be separated from a soil sample column in the sampling barrel through cooperation of the shaping stripping mechanism, the tail end limiting separation mechanism and the centering positioning mechanism; the device is simple in structure and convenient to use, the device can be intermittently separated from the multiple arc-shaped splicing plates in batches, and in the separation process, the outer wall of the soil sample column is synchronously beaten and solidified, so that the outer wall of the soil sample column is relatively compact and smooth and is prevented from being excessively adhered to the inner walls of the arc-shaped splicing plates, and the effect of subsequent convenient stripping extraction can be achieved while the integrity of the sample column is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling, in particular to a soil sampling method for road and bridge engineering supervision. Background Art

[0002] Road and bridge engineering refers to the survey, design, construction, maintenance, and management of roads and bridges. In order to ensure the construction quality of road and bridge engineering and meet national standards, relevant departments will conduct inspection and management of the engineering to avoid unqualified engineering. Therefore, engineering supervision is very important. Before inspecting bridge engineering, soil sampling is required. The current sampling method is mostly manual drilling by staff, using a drill tube inserted into the ground, taking the soil out of the ground, and then taking the soil sample out of the drill tube.

[0003] Although the above sampling method can be used to sample soil, it is inevitable that there are still some shortcomings in its actual use. For example, the device lacks a convenient feeding mechanism, so that the soil sample column squeezed inside the soil sampling tube will be inconvenient to extract from the tube. In order to avoid such problems, a soil sampling method based on road and bridge engineering supervision is proposed to solve the existing problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a soil sampling method for road and bridge engineering supervision, which solves the problem that the device lacks a convenient unloading mechanism, resulting in the inconvenience of extracting the soil sample column squeezed inside the soil sampling tube from the tube.

[0005] To achieve the above purpose, the present invention is implemented by the following technical scheme: a soil sampling method based on road and bridge engineering supervision, specifically comprising the following steps: Step 1: Sample positioning and sampling: Move the mounting frame and the electric telescopic rod to the sampling position, and then fix the mounting frame to the sampling ground through the insertion and cooperation of the latch rod and the limit slot, and then start the electric telescopic rod, so that the telescopic end of the electric telescopic rod drives the sampling tube through the adapter frame to sample the soil deep in the ground; Step 2: Sample shaping: With the downward pressing and upward reset of the telescopic end of the electric telescopic rod, the soil sample is retained inside the sampling tube, and then the shaping and stripping mechanism is controlled to adhere and detach the soil column sample close to the inner wall of the arc-shaped splicing plate, and lightly and repeatedly hit and shape it to facilitate its subsequent stripping; Step 3: Release the limit of the bottom material opening: When the arc-shaped splicing plate is moved to separate from the soil sample column, the arc-shaped splicing plate simultaneously releases the limit of the conical material opening at the bottom of the sampling tube through the tail end limit separation mechanism, so that the sample column can be easily pulled out and subsequently adapted to the material loading and unloading; Step 4, assisting sample centering and discharging: when the arc-shaped splicing plate moves and separates from the soil sample column, the outer wall of the arc-shaped splicing plate synchronously slides and positions the shaped soil sample column through the centering positioning mechanism, so that the soil sample column can slide down and discharge in the center.

[0006] Preferably, the electric telescopic rod is fixedly arranged on the top of the mounting frame, and one end of the electric telescopic rod extends to the interior of the mounting frame, the bottom of the telescopic end of the electric telescopic rod is fixedly connected to an adapter frame, the interior of the adapter frame is fixedly connected to a sampling barrel, a shaping and stripping mechanism is arranged between the sampling barrel and the adapter frame, a tail end limiting and separating mechanism is arranged between the shaping and stripping mechanism and the sampling barrel, and a centering positioning mechanism is arranged between the sampling barrel, the shaping and stripping mechanism, and the tail end limiting and separating mechanism.

[0007] Preferably, the shaping and stripping mechanism includes an arc-shaped splicing plate, and a plurality of the arc-shaped splicing plates are provided, and the plurality of arc-shaped splicing plates are arranged in a surrounding equidistant sliding array on the inner wall of the sampling tube, and the outer walls of the plurality of the arc-shaped splicing plates are respectively fixedly provided with a first special-shaped rod, a second special-shaped rod and a third special-shaped rod in a clockwise order, and the bottom of the inner cavity of the adapter frame is fixedly connected to a servo motor, and the output shaft of the servo motor is fixedly connected to a threaded rod through a coupling, and the top of the threaded rod is rotatably connected to the top of the inner cavity of the adapter frame through a bearing, and the surface of the threaded rod is threadedly connected to a threaded sleeve, and one side of the threaded sleeve is fixedly connected to a gathering ring used in combination with the first special-shaped rod, the second special-shaped rod and the third special-shaped rod through a bracket, and the bottom ends of the first special-shaped rod, the second special-shaped rod and the third special-shaped rod are all fixedly connected to an expansion rod used in combination with the gathering ring.

[0008] Preferably, the tail end limiting separation mechanism includes a conical material mouth, which is arranged at the bottom of the sampling tube, and a second plug ring is fixedly connected to the top of the conical material mouth, and a plurality of positioning pin holes are provided on the outer surface of the second plug ring in an equidistant array, and a second slot for matching with the second plug ring is provided on the inner wall of the arc-shaped splicing plate, and a positioning pin rod for matching with the positioning pin hole is fixedly connected to the inner wall of the second slot.

[0009] Preferably, the centering positioning mechanism includes a limit sliding frame, and the limit sliding frames are provided with a plurality of limit sliding frames, and the plurality of limit sliding frames are fixedly arranged on the inner wall of the sampling barrel in an equidistant circular array, and the limit sliding frames are provided with a plurality of vertically equidistant arrays, and the internal sliding connection of the limit sliding frame is provided with a telescopic plate, and a second return spring is fixedly connected between adjacent telescopic plates and the limit sliding frames, one end of the telescopic plate is fixedly connected with a mounting shell, and the internal rotation of the mounting shell is provided with a guide slide rod, and a plurality of guide slide rods are provided in a vertically equidistant array, and the surface of the arc-shaped splicing plate is provided with a movable notch for use with the mounting shell, and the inner wall of the sampling barrel and the top and bottom of the telescopic plate are provided with a movable seesaw for use with the mounting shell through a bracket and a bearing.

[0010] Preferably, a first insert ring is fixedly connected to the top of the conical material opening, a first slot matched with the first insert ring is provided on the inner wall of the sampling tube, and a rubber ring gasket is fixedly connected to the outer surface of the first insert ring.

[0011] Preferably, the inner wall of the gathering ring is fixedly connected with a plurality of U-shaped frames in an equidistant array, and the inner wall of the U-shaped frame is rotatably provided with guide rollers used in conjunction with the first special-shaped rod, the second special-shaped rod and the third special-shaped rod through bearings.

[0012] Preferably, a limiting slide rod is fixedly connected between the top and bottom of the inner cavity of the adapter frame, a limiting slide sleeve is slidably connected to the surface of the limiting slide rod, and one side of the limiting slide sleeve is fixedly connected to the top of the gathering ring through a bracket.

[0013] Preferably, support pads are fixedly connected to both sides of the bottom of the mounting frame, and limiting through grooves are provided on the front and rear sides of the top of the support pads.

[0014] Preferably, a plurality of limit sleeves are fixedly arranged at equal intervals around the inner wall of the sampling tube, and a plurality of limit sleeves are arranged at equal intervals in a vertical array, the limit sleeve is internally slidably connected to a limit movable rod, and one end of the limit movable rod is fixedly connected to the surface of an adjacent arc-shaped splicing plate, and a first return spring is fixedly connected between adjacent limit movable rods and limit sleeves. Beneficial Effects

[0015] The present invention provides a soil sampling method for road and bridge engineering supervision. Compared with the existing technology, it has the following beneficial effects: (1) The soil sampling method for road and bridge engineering supervision is based on the arrangement of a shaping and stripping mechanism, a tail end limit separation mechanism and a center positioning mechanism between the adapter frame and the sampling tube, so that the device can facilitate the intermittent and batch separation of the soil sample column inside the sampling tube through the coordinated cooperation of the shaping and stripping mechanism, the tail end limit separation mechanism and the center positioning mechanism, and in the process of separation, the outer wall of the soil sample column is simultaneously struck and compacted to make the outer wall relatively tight and smooth, thereby avoiding excessive adhesion between the outer wall and the inner wall of the arc-shaped splicing plate, so as to ensure the integrity of the sample column while facilitating subsequent convenient stripping and extraction, and simultaneously release the fixing of the sampling tube and the conical material port, so that after the soil column is separated and struck and shaped, the conical material port can be manually pulled down and separated to facilitate the pulling out of the sample column, and simultaneously the sample column after the striking and shaping is centered by multiple sets of guide slide bars, so that the sample column is stripped downward in the center.

[0016] (2) The soil sampling method for road and bridge engineering supervision is characterized in that a U-shaped frame is arranged on the inner surface of a gathering ring, and a guide roller is rotatably arranged inside the U-shaped frame, so that during the extrusion and matching process between the gathering ring and the first special-shaped rod, the second special-shaped rod and the threaded sleeve, the rotation of the guide roller is used as an extrusion medium, thereby reducing the friction resistance generated during the extrusion process of the gathering ring.

[0017] (3) The soil sampling method for road and bridge engineering supervision, by fixing a rubber ring gasket on the outer surface of the first plug ring, enables the conical material mouth to be movably fixed to the bottom of the sampling tube through the extrusion fit of the first plug ring, the first slot and the rubber ring gasket, which facilitates the initial fixing and installation of the conical material mouth and can meet the problem of subsequent soil sample discharge without directly falling to the ground due to lack of obstruction.

[0018] (4) The soil sampling method for road and bridge engineering supervision is based on arranging multiple sets of limit sleeves, limit movable rods and first return springs between the arc-shaped splicing plate and the sampling tube, so that after the arc-shaped splicing plate loses the gathering ring and is gathered and pressed, the multiple sets of limit sleeves, limit movable rods and first return springs can be contracted and matched, so that the arc-shaped splicing plate can be quickly and stably fitted and separated from the soil sample column. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the process of the present invention; Figure 2 It is a schematic diagram of the external structure of the present invention; Figure 3 A bottom view of the sampling tube structure of the present invention; Figure 4 It is a cross-sectional view of the sampling tube structure of the present invention; Figure 5 For the present invention Figure 4 A partial enlarged view of the middle A; Figure 6 It is a schematic diagram of the structure of the shaping and stripping mechanism of the present invention; Figure 7 For the present invention Figure 6 A partial enlarged view of point B in the middle; Figure 8 It is a cross-sectional view of the tapered feed opening structure of the present invention; Fig. 9 For the present invention Figure 8 A partial enlarged view of point C in the middle; Fig.10 For the present invention Figure 8 A partial enlarged view of point D in the middle; Fig.11 It is a schematic diagram of the structure of the tail end limiting separation mechanism of the present invention; Fig.12 It is a schematic diagram of the centering positioning mechanism structure of the present invention; Fig.13 It is a schematic diagram of the centering positioning mechanism structure of the present invention; Fig.14 It is a schematic diagram of the internal structure of the limiting sleeve of the present invention.

[0020] In the figure: 1, mounting frame; 2, electric telescopic rod; 3, adapter frame; 4, sampling tube; 5, shaping and stripping mechanism; 501, arc splicing plate; 502, first special-shaped rod; 503, second special-shaped rod; 504, third special-shaped rod; 505, servo motor; 506, threaded rod; 507, threaded sleeve; 508, gathering ring; 509, expansion rod; 6, tail end limit separation mechanism; 601, conical material mouth; 602, second plug ring; 603, positioning pin hole; 604, second slot; 605, Positioning pin rod; 7, centering positioning mechanism; 701, limit slide frame; 702, telescopic plate; 703, second return spring; 704, mounting shell; 705, guide slide rod; 706, movable notch; 707, movable seesaw; 8, first plug ring; 9, first slot; 10, rubber ring gasket; 11, U-shaped frame; 12, guide roller; 13, limit slide rod; 14, limit sleeve; 15, support pad; 16, limit through groove; 17, limit sleeve; 18, limit movable rod; 19, first return spring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] See also Figure 1-14 The present invention provides a technical solution: a soil sampling method for road and bridge engineering supervision, which specifically includes the following steps: Step 1: Sample positioning and sampling: Move the mounting frame 1 and the electric telescopic rod 2 to the sampling position, and then fix the mounting frame 1 to the sampling ground through the insertion and cooperation of the latch and the limit slot 16, and then start the electric telescopic rod 2, so that the telescopic end of the electric telescopic rod 2 drives the sampling tube 4 through the adapter frame 3 to sample the soil deep in the ground; Step 2: Sample shaping: With the downward pressing and upward reset of the telescopic end of the electric telescopic rod 2, the soil sample is retained in the sampling tube 4, and then the shaping and stripping mechanism 5 is controlled to adhere and detach the soil column sample close to the inner wall of the arc-shaped splicing plate 501, and lightly and repeatedly hit and shape it to facilitate its subsequent stripping; After the height of the sampling tube 4 is reset to extract the sample to the upper part of the ground, the servo motor 505 is started, and the servo motor 505 drives the threaded rod 506 to rotate, and the threaded rod 506 rotates the threaded sleeve 507 to move downward, and the threaded sleeve 507 synchronously drives the gathering ring 508 to move downward, and the gathering ring 508 synchronously drives the U-shaped frame 11 and the guide roller 12 to move, and the movement of the guide roller 12 will move the smooth section along the first special-shaped rod 502, the second special-shaped rod 503 and the third special-shaped rod 504, and in the process of moving, it will elastically squeeze the wave sections of different heights of the first special-shaped rod 502, the second special-shaped rod 503 and the third special-shaped rod 504 in turn. During the press fit, during the extrusion fit between the guide roller 12 and the wave section of the first special-shaped rod 502, the second special-shaped rod 503 and the third special-shaped rod 504, the first special-shaped rod 502, the second special-shaped rod 503 and the third special-shaped rod 504 are elastically contracted by the arc-shaped splicing plate 501, the limiting sleeve 17, the limiting movable rod 18 and the first reset spring 19, so that the arc-shaped splicing plates 501 are separated from the outer wall of the soil column in three batches in turn, and in the process of separation, they are reciprocatedly squeezed and reset by the wave section, so that the arc-shaped splicing plates 501 in the separation process repeatedly knock the outer surface of the soil column, so that its outer surface is compacted and smooth; After the gathering ring 508 descends to the bottom, the gathering ring 508 will simultaneously expand and squeeze with a plurality of expansion rods 509, so that all the arc-shaped splicing plates 501 are separated from the outer wall of the soil; Step 3: Release the limit of the bottom material opening: When the arc-shaped splicing plate 501 is moved to separate from the soil sample column, the arc-shaped splicing plate 501 simultaneously releases the fixation of the conical material opening 601 at the bottom of the sampling tube 4 through the tail-end limit separation mechanism 6, so that the sample column can slide down and discharge under its own gravity during the process of manual lifting; When the arc-shaped splicing plate 501 moves and separates from the soil column sample, the arc-shaped splicing plate 501 synchronously drives the positioning pin 605 to move, and the positioning pin 605 moves and is pulled out from the inside of the positioning pin hole 603, thereby causing the sampling tube 4 to separate from the fixed fit with the conical material port 601. Then, the operator holds the conical material port 601 and pulls it down. After the conical material port 601 separates from the bottom of the sampling tube 4, the conical material port 601 is lifted to make the soil column sample slide down automatically. Step 4: Assisting sample discharging in the center: When the arc-shaped splicing plate 501 moves and separates from the soil sample column, the outer wall of the arc-shaped splicing plate 501 synchronously slides and positions the shaped soil sample column in the center through the center positioning mechanism 7, so that the soil sample column can slide and discharge in the center; When the arc-shaped splicing plate 501 moves toward the inner wall of the sampling tube 4, the arc-shaped splicing plate 501 synchronously drives the movable slot 706 to move. The movement of the movable slot 706 will squeeze the adjacent movable seesaw 707. The movable seesaw 707 will be pried on the other side under the force, and the pried end surface will synchronously squeeze the mounting shell 704 to move horizontally, prompting the mounting shell 704 carrying the guide slide rod 705 to fit against the tight and smooth outer wall of the soil column.

[0023] The electric telescopic rod 2 is fixedly arranged on the top of the mounting frame 1, and one end of the electric telescopic rod 2 extends to the inside of the mounting frame 1, the bottom of the telescopic end of the electric telescopic rod 2 is fixedly connected to the adapter frame 3, and the inside of the adapter frame 3 is fixedly connected to the sampling tube 4, and the two sides of the bottom of the mounting frame 1 are fixedly connected to the support pads 15, and the front and rear sides of the top of the support pad 15 are provided with limiting through grooves 16.

[0024] As a preferred embodiment: in order to facilitate the separation of the container and the sample for subsequent removal, a shaping and removing mechanism 5 is arranged between the sampling tube 4 and the adapter frame 3, and the shaping and removing mechanism 5 includes an arc-shaped splicing plate 501, and a plurality of arc-shaped splicing plates 501 are arranged, and the plurality of arc-shaped splicing plates 501 are arranged on the inner wall of the sampling tube 4 in a surrounding equidistant sliding array, and the outer walls of the plurality of arc-shaped splicing plates 501 are respectively fixedly provided with a first special-shaped rod 502, a second special-shaped rod 503 and a third special-shaped rod 504 in a clockwise order, and a servo motor 505 is fixedly connected to the bottom of the inner cavity of the adapter frame 3, and the output shaft of the servo motor 505 is fixedly connected to a threaded rod 506 through a coupling, and the top of the threaded rod 506 is rotatably connected to the top of the inner cavity of the adapter frame 3 through a bearing, and the threaded rod 506 is rotatably connected to the top of the inner cavity of the adapter frame 3 through a bearing. The surface of the threaded rod 506 is threadedly connected with a threaded sleeve 507, and one side of the threaded sleeve 507 is fixedly connected with a gathering ring 508 used in conjunction with the first special-shaped rod 502, the second special-shaped rod 503 and the third special-shaped rod 504 through a bracket. The bottom ends of the first special-shaped rod 502, the second special-shaped rod 503 and the third special-shaped rod 504 are all fixedly connected with an expansion rod 509 used in conjunction with the gathering ring 508. As a detailed explanation: by setting a plurality of groups of arc-shaped splicing plates 501, and separating a plurality of arc-shaped splicing plates 501 from the sample in batches, when the arc-shaped splicing plates 501 are separated from the sample column, the separation operation is performed in batches to ensure that most of the sample column is wrapped, and to ensure that the sample column will not be damaged by large-area adhesion during the separation process; As a detailed explanation: a plurality of limit sleeves 17 are fixedly arranged at equal intervals around the inner wall of the sampling tube 4, and a plurality of limit sleeves 17 are arranged at equal intervals in a vertical array, the limit sleeve 17 is internally slidably connected to a limit movable rod 18, and one end of the limit movable rod 18 is fixedly connected to the surface of an adjacent arc-shaped splicing plate 501, a first reset spring 19 is fixedly connected between the adjacent limit movable rods 18 and the limit sleeve 17, a limit slide rod 13 is fixedly connected between the top and bottom of the inner cavity of the adapter frame 3, the surface of the limit slide rod 13 is slidably connected to a limit sleeve 14, and one side of the limit sleeve 14 is fixedly connected to the top of the gathering ring 508 through a bracket, a plurality of U-shaped frames 11 are fixedly connected to the inner wall of the gathering ring 508 in an equidistant array, and a guide roller 12 used in conjunction with the first special-shaped rod 502, the second special-shaped rod 503 and the third special-shaped rod 504 is rotatably arranged on the inner wall of the U-shaped frame 11 through a bearing.

[0025] As a preferred embodiment: in order to facilitate the automatic release of the limit of the conical material mouth 601 so as to facilitate the subsequent pulling out of the sample, a tail end limit separation mechanism 6 is arranged between the shaping and stripping mechanism 5 and the sampling tube 4, and the tail end limit separation mechanism 6 includes a conical material mouth 601, and the conical material mouth 601 is arranged at the bottom of the sampling tube 4, and a second plug ring 602 is fixedly connected to the top of the conical material mouth 601, and a plurality of positioning pin holes 603 are provided on the outer surface of the second plug ring 602 in an equidistant array, and a second slot 604 used in conjunction with the second plug ring 602 is provided on the inner wall of the arc splicing plate 501, and a positioning pin rod 605 used in conjunction with the positioning pin hole 603 is fixedly connected to the inner wall of the second slot 604.

[0026] As a preferred embodiment: in order to facilitate the centering and sliding positioning of the sample column separated from the inner wall of the container, a centering positioning mechanism 7 is arranged between the sampling tube 4, the shaping and stripping mechanism 5, and the tail end limiting separation mechanism 6. The centering positioning mechanism 7 includes a limiting sliding frame 701, and a plurality of limiting sliding frames 701 are arranged, and the plurality of limiting sliding frames 701 are fixedly arranged on the inner wall of the sampling tube 4 in an equidistant circular array. A plurality of limiting sliding frames 701 are arranged in a vertical equidistant array. The interior of the limiting sliding frame 701 is slidably connected with a telescopic plate 702, and adjacent telescopic plates 702 are connected to each other. A second return spring 703 is fixedly connected between 02 and the limiting slide frame 701, one end of the telescopic plate 702 is fixedly connected to a mounting shell 704, a guide slide rod 705 is rotatably arranged inside the mounting shell 704, and a number of guide slide rods 705 are arranged in a vertically equidistant array, a movable groove 706 for matching with the mounting shell 704 is provided on the surface of the arc-shaped splicing plate 501, and a movable seesaw 707 for matching with the mounting shell 704 is rotatably arranged on the inner wall of the sampling tube 4 and located at the top and bottom of the telescopic plate 702 through a bracket and a bearing.

[0027] A first insert ring 8 is fixedly connected to the top of the conical material opening 601 , a first slot 9 matched with the first insert ring 8 is formed on the inner wall of the sampling tube 4 , and a rubber ring gasket 10 is fixedly connected to the outer surface of the first insert ring 8 .

Claims

1. A soil sampling method for road and bridge engineering supervision, characterized in that: The specific steps include: Step 1: Sample positioning and sampling: Move the mounting frame (1) and the electric telescopic rod (2) to the sampling position, then fix the mounting frame (1) to the sampling ground by interlacing the latch rod with the limit slot (16), then start the electric telescopic rod (2), so that the telescopic end of the electric telescopic rod (2) drives the sampling tube (4) through the adapter frame (3) to sample soil deep in the ground; Step 2: Sample shaping: With the downward pressing and upward reset of the telescopic end of the electric telescopic rod (2), the soil sample is retained inside the sampling tube (4), and then the shaping and removing mechanism (5) is controlled to adhere and remove the soil column sample close to the inner wall of the arc-shaped splicing plate (501), and lightly and repeatedly hit and shape it to facilitate subsequent removal; Step 3: releasing the limit of the bottom material opening: while the arc-shaped splicing plate (501) is moved to separate from the soil sample column, the arc-shaped splicing plate (501) simultaneously releases the limit of the conical material opening (601) at the bottom of the sampling tube (4) through the tail end limit separation mechanism (6), so that the sample column can be easily pulled out and subsequently adapted to the lifting of the material; Step 4, assisting sample centering and discharging: when the arc-shaped splicing plate (501) moves and separates from the soil sample column, the outer wall of the arc-shaped splicing plate (501) synchronously slides and positions the shaped soil sample column through the centering positioning mechanism (7), so that the soil sample column slides down and discharges in the center.

2. A soil sampling method for road and bridge engineering supervision according to claim 1, characterized in that: The electric telescopic rod (2) is fixedly arranged on the top of the mounting frame (1), and one end of the electric telescopic rod (2) extends to the inside of the mounting frame (1); the bottom of the telescopic end of the electric telescopic rod (2) is fixedly connected to an adapter frame (3); the inside of the adapter frame (3) is fixedly connected to a sampling tube (4); a shaping and stripping mechanism (5) is arranged between the sampling tube (4) and the adapter frame (3); a tail end limiting separation mechanism (6) is arranged between the shaping and stripping mechanism (5) and the sampling tube (4); and a centering positioning mechanism (7) is arranged between the sampling tube (4), the shaping and stripping mechanism (5), and the tail end limiting separation mechanism (6).

3. The soil sampling method for road and bridge engineering supervision according to claim 1 is characterized in that: The shaping and stripping mechanism (5) comprises an arc-shaped splicing plate (501), wherein a plurality of the arc-shaped splicing plates (501) are provided, and the plurality of arc-shaped splicing plates (501) are arranged on the inner wall of the sampling tube (4) in a surrounding equidistant sliding array, and the outer walls of the plurality of arc-shaped splicing plates (501) are respectively and sequentially fixedly provided with a first special-shaped rod (502), a second special-shaped rod (503) and a third special-shaped rod (504) in a clockwise order, and the bottom of the inner cavity of the adapter frame (3) is fixedly connected to a servo motor (505), and the output shaft of the servo motor (505) is fixedly connected to a threaded rod ( The threaded rod (506) is rotatably connected to the top of the inner cavity of the adapter frame (3) via a bearing; a threaded sleeve (507) is threadedly connected to the surface of the threaded rod (506); a gathering ring (508) matched with the first special-shaped rod (502), the second special-shaped rod (503) and the third special-shaped rod (504) is fixedly connected to one side of the threaded sleeve (507) via a bracket; and an expansion rod (509) matched with the gathering ring (508) is fixedly connected to the bottom ends of the first special-shaped rod (502), the second special-shaped rod (503) and the third special-shaped rod (504).

4. The soil sampling method for road and bridge engineering supervision according to claim 1 is characterized in that: The tail end limiting separation mechanism (6) comprises a conical material opening (601), wherein the conical material opening (601) is arranged at the bottom of the sampling tube (4), and a second plug ring (602) is fixedly connected to the top of the conical material opening (601), and a plurality of positioning pin holes (603) are arranged in an equidistant array around the outer surface of the second plug ring (602), and a second slot (604) for use with the second plug ring (602) is arranged on the inner wall of the arc-shaped splicing plate (501), and a positioning pin rod (605) for use with the positioning pin hole (603) is fixedly connected to the inner wall of the second slot (604).

5. The soil sampling method for road and bridge engineering supervision according to claim 1 is characterized in that: The centering positioning mechanism (7) comprises a limit sliding frame (701), wherein a plurality of limit sliding frames (701) are provided, and the plurality of limit sliding frames (701) are fixedly arranged on the inner wall of the sampling tube (4) in an array of equidistant circles around the circumference, wherein a plurality of limit sliding frames (701) are arranged in an array of equidistant vertical distances, wherein a telescopic plate (702) is slidably connected to the interior of the limit sliding frame (701), and a second return spring (703) is fixedly connected between adjacent telescopic plates (702) and the limit sliding frame (701), and the telescopic plate (70 2) is fixedly connected to one end of a mounting shell (704), a guide slide bar (705) is rotatably arranged inside the mounting shell (704), and a plurality of guide slide bars (705) are arranged in a vertically equidistant array, a movable notch (706) for use with the mounting shell (704) is provided on the surface of the arc-shaped splicing plate (501), and a movable seesaw (707) for use with the mounting shell (704) is rotatably arranged on the inner wall of the sampling tube (4) and located at the top and bottom of the telescopic plate (702) through a bracket and a bearing.

6. The soil sampling method for road and bridge engineering supervision according to claim 1 is characterized in that: A first insert ring (8) is fixedly connected to the top of the conical material opening (601), a first slot (9) matched with the first insert ring (8) is provided on the inner wall of the sampling tube (4), and a rubber ring gasket (10) is fixedly connected to the outer surface of the first insert ring (8).

7. The soil sampling method for road and bridge engineering supervision according to claim 3 is characterized in that: The inner wall of the gathering ring (508) is fixedly connected to a plurality of U-shaped frames (11) in an equidistant array, and the inner wall of the U-shaped frame (11) is rotatably provided with guide rollers (12) used in conjunction with the first special-shaped rod (502), the second special-shaped rod (503) and the third special-shaped rod (504) via bearings.

8. The soil sampling method for road and bridge engineering supervision according to claim 3 is characterized in that: A limiting slide bar (13) is fixedly connected between the top and bottom of the inner cavity of the adapter frame (3), a limiting slide sleeve (14) is slidably connected to the surface of the limiting slide bar (13), and one side of the limiting slide sleeve (14) is fixedly connected to the top of the gathering ring (508) via a bracket.

9. The soil sampling method for road and bridge engineering supervision according to claim 1 is characterized in that: Support pads (15) are fixedly connected to both sides of the bottom of the mounting frame (1), and limiting through grooves (16) are provided on the front and rear sides of the top of the support pad (15).

10. The soil sampling method for road and bridge engineering supervision according to claim 3 is characterized in that: A plurality of limit sleeves (17) are fixedly arranged at equal intervals around the inner wall of the sampling tube (4), and a plurality of limit sleeves (17) are arranged at equal intervals in a vertical array. The limit sleeves (17) are internally slidably connected to a limit movable rod (18), and one end of the limit movable rod (18) is fixedly connected to the surface of an adjacent arc-shaped splicing plate (501), and a first return spring (19) is fixedly connected between adjacent limit movable rods (18) and limit sleeves (17).

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