Rock-soil detection device for surveying and mapping engineering

Abstract

The invention discloses a rock-soil detection device for measuring engineering surveying and mapping, and belongs to the technical field of rock-soil tests, the rock-soil detection device comprises a control cabinet and a base, a pressure applying part is arranged at the top of the base, and a test board is arranged on one side of each of the base and the pressure applying part. According to the invention, through the designed leveling mechanism, the shearing parts which are oppositely arranged on the two sides are rotated through the leveling mechanism, the surface of the test board becomes a plane after the shearing parts are screwed into the containing groove in the top of the test board to be stored, and at the moment, the pressing part moves to realize the extrusion test of the test boards on the two sides; a shearing force test can be formed through downward pressing of the shearing parts on the two sides, after the test tables on the two sides are controlled to rotate relatively, the radial extrusion parts located on the other sides of the test tables can move in the radial direction under pressure, and the peripheral side of a sample can be subjected to an extrusion test through the radial extrusion parts moving in the radial direction; the test processing adaptability can be improved through a switchable test mode, additional sample equipment switching and calibration leveling are not needed, and the test precision is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of rock and soil testing, and in particular relates to a rock and soil detection device for surveying and mapping of surveying engineering. Background Art

[0002] In surveying and mapping of engineering, it is usually necessary to test the geotechnical structure to ensure the safety, stability and economy of the project. By measuring the properties of geotechnical structures, the stability and safety of buildings can be analyzed. Indoor testing equipment generally includes triaxial compression equipment and direct shear equipment, which are used to conduct detailed tests on geotechnical samples in the laboratory.

[0003] The Chinese invention patent with the authorization announcement number CN118168928A discloses a rock and soil core testing device, including a first box and a first valve, a closed door is arranged at the front end of the first box, and the first valve is connected and arranged at the lower part of the outer wall of the first box; it also includes a clamping device, a hydraulic device, a water injection device, a first support column, a second support column, a cross arm, a first support member and a second support member, the first support column is slidably installed at the top of the first box, the second support column is slidably installed at the bottom of the first box, the clamping device is installed at the bottom of the first support column and the top of the second support column, The clamping device is used to fix the rock and soil sample core, the left end of the cross arm is rotationally connected to the top of the first support column, and the top of the first support is rotationally installed on the outer wall of the left part of the cross arm; it reduces the driving load when pressing and stretching the rock and soil sample core, improves the force balance effect at the upper and lower ends of the rock and soil sample core, reduces the complexity of rock and soil sample core testing, and improves work efficiency. The above scheme tests the rock and soil sample core by applying force through the clamping devices on both sides, but in actual use, in order to switch the test scheme, the rock and soil sample core needs to be switched between different devices, resulting in poor efficiency of rock and soil sampling, and there is room for improvement. Summary of the invention

[0004] The purpose of the present invention is to propose a rock and soil detection device for surveying engineering and mapping in order to solve the problem that rock and soil sample cores need to be switched between different devices, resulting in poor efficiency of rock and soil sampling.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A geotechnical detection device for surveying engineering and mapping, comprising a control cabinet and a base, a pressure-applying part is provided on the top of the base, and a test bench is provided on one side of the base and the pressure-applying part, and the test bench at the top is driven downward to approach another test bench for pressure testing by the pressure-applying part, and a leveling mechanism is provided on one side of the test bench, and a shearing part is provided on one side of the leveling mechanism, and the shearing part is driven by the leveling mechanism to rotate and adhere to the surface of the test bench to form a plane, and the detection mode is adjusted by the expansion of the shearing part; The test bench is rotatably connected to a base and one side of a pressure-applying portion at a corresponding position, and a radial pressure-applying mechanism is provided on the side of the test bench at the bottom away from the shearing portion. The radial pressure-applying mechanism includes a plurality of radial extrusion portions arranged around the axis of the test bench, and the radial extrusion portions are configured to move along the radial position of the test bench to laterally press the sample.

[0006] As a further description of the above technical solution: The leveling mechanism includes a rotating rod, which is connected to one side of the shearing part, and two ends of the rotating rod are respectively rotatably connected to the accommodating grooves opened on the top of the test disc, and the two ends of the rotating rod are externally connected with driven gears, and the bottom of the driven gear is meshed with a driving rack, and a connecting plate is connected between the front ends of the driving racks on both sides, and one side of the connecting plate is connected to an extrusion plate, and the extrusion plate is in contact with one side of the supporting assembly, and a fixing rod is connected between the ends of the driving racks on both sides away from the connecting plate, and one side of the fixing rod is connected to an electric push rod, and the electric push rod is connected to one side of the inner cavity of the accommodating groove.

[0007] As a further description of the above technical solution: The support assembly includes a support block, one side of the support block is connected to a first tooth plate, the bottom of the first tooth plate is meshed with a reversing gear, the reversing gear is rotatably connected to a slide groove opened on one side of the inner cavity of the accommodating groove, the other side of the reversing gear is meshed with a second tooth plate, one end of the second tooth plate close to the accommodating groove is connected to a trigger rod, and the trigger rod extends to one side of the extrusion plate, and the movement of the extrusion plate drives the second tooth plate to drive the first tooth plate and the support block to extend toward the bottom side of the shearing portion.

[0008] As a further description of the above technical solution: One end of the first tooth plate away from the support block is connected to a guide rod, a first spring is sleeved outside the guide rod, and two ends of the first spring are respectively connected to the first tooth plate and corresponding positions on one side of the inner cavity of the slide groove.

[0009] As a further description of the above technical solution: The cross-section of the connecting plate is U-shaped, and the bottom of the connecting plate extends to the bottom side of the accommodating groove. The extension of the connecting plate to the bottom side of the accommodating groove avoids the rotation and storage of the interference shearing part.

[0010] As a further description of the above technical solution: The top of the test bench is provided with an empty slot for the driven gear to be rotated out, and the driven gear is a half gear.

[0011] As a further description of the above technical solution: One side of the accommodating groove is connected with a closing plate, one side of the closing plate is connected with a crush pad, and the crush pad is in contact with one side of the shearing portion.

[0012] As a further description of the above technical solution: A sliding rod is connected to one side of the radial extrusion part, and a sliding sleeve is provided on the outer sleeve of the sliding rod. The sliding sleeve is connected to one side of the test bench. A second spring is provided on the outer sleeve of the sliding rod. Two ends of the second spring are respectively connected to the sliding sleeve and corresponding positions on one side of the radial extrusion part. A wedge is connected to one end of the sliding rod away from the radial extrusion part, and a plurality of mounting parts are equidistantly connected along the axis to the side of the test bench at the top away from the shearing part. A nut is embedded in the top of the mounting part, and a lifting screw is connected to the inner thread of the nut. An extrusion roller is connected to one end of the lifting screw. The extrusion roller is pressed down and contacts the wedge after the test benches on both sides are rotated.

[0013] As a further description of the above technical solution: The pressure-applying part includes a hydraulic drive part and a movable shaft. The bottom end of the movable shaft is connected to a support frame. The test bench at the top is rotatably connected to the inner cavity of the support frame. The test bench at the bottom is rotatably connected to the top of the base. Both sides of the test bench are provided with a rotating drive part.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, the shearing parts arranged opposite to each other on both sides can be rotated by the designed leveling mechanism. After the shearing parts are screwed into the receiving groove on the top of the test bench for storage, the surface of the test bench can be made flat. At this time, the movement of the pressure-applying part can realize the extrusion test of the test benches on both sides. When the shearing parts are unfolded, the shear force test can be formed by the downward pressure of the shearing parts on both sides. After the test benches on both sides are controlled to rotate relative to each other, the radial extrusion part located on the other side of the test bench can move radially under pressure. The radial extrusion part that moves radially can perform an extrusion test on the outer peripheral side of the sample, which is conducive to improving the adaptability of the test process through the switchable test mode, without the need for additional switching of sample equipment and calibration and leveling, thereby improving the test accuracy. 2. In the present invention, through the designed support assembly, when the driving rack drives the connecting plate to move, the connecting plate can drive the extrusion plate to squeeze the trigger rod, and when the trigger rod is squeezed, it can drive the second tooth plate to move, and the movement of the second tooth plate can drive the other side of the first tooth plate to move through the reversing gear, and the movement of the first tooth plate can drive the front support block to move toward the shearing part, and the abutment strength of the shearing part can be improved by the lateral abutment of the support block to the shearing part, which is conducive to improving the shearing stability; 3. In the present invention, after the test benches on both sides are rotated by the rotary driving part to make the squeezing rollers correspond to the wedge blocks, the top pressure-applying part can drive the test bench at the top to move downward when driving the support frame to move downward. The downward movement of the test bench can squeeze the wedge blocks at the corresponding positions at the bottom through the squeezing rollers. When the wedge blocks are squeezed, they can drive the slide bar to move along the axial direction in the slide sleeve. The movement of the slide bar can drive the radial squeezing part to squeeze the sample blocks whose inner sides are limited by the test benches on both sides. The extrusion test of the surrounding side of the sample is realized by the radial squeezing part that moves radially. A variety of test methods are provided by the flippable test bench, and the adaptability to rock and soil detection in surveying and mapping projects is improved by different soil sample test methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a geotechnical detection device for surveying and mapping of surveying engineering proposed by the present invention; Figure 2 This is a schematic diagram of the disassembled structure of a geotechnical detection device for surveying and mapping of surveying engineering proposed by the present invention; Figure 3 This is a schematic diagram of the overall structure of a test bench for a geotechnical detection device for surveying engineering and mapping proposed by the present invention; Figure 4 This is a schematic diagram of the lateral structure of a geotechnical detection device for surveying and mapping of surveying engineering proposed by the present invention; Figure 5 The present invention proposes Figure 4 The structural diagram of the enlarged part A in the middle; Figure 6 A schematic diagram of a half-section structure of a test bench of a geotechnical detection device for surveying engineering and mapping proposed by the present invention; Figure 7 This is a schematic diagram of the horizontal structure of a test bench for a geotechnical detection device for surveying engineering and mapping proposed by the present invention; Figure 8 This is a schematic diagram of the disassembled structure of a leveling mechanism of a geotechnical detection device for surveying engineering and mapping proposed by the present invention; Fig. 9 This is a schematic diagram of the combined structure of the leveling mechanism of a geotechnical detection device for surveying engineering and mapping proposed by the present invention; Fig.10 This is a schematic diagram of the structure of a test bench of a geotechnical detection device for surveying engineering and mapping proposed by the present invention when viewed from above; Fig.11 This is a schematic structural diagram of a radial pressure mechanism of a geotechnical detection device for surveying engineering and mapping proposed by the present invention.

[0016] Legend: 1. Pressure-applying part; 2. Control cabinet; 3. Base; 4. Test bench; 5. Leveling mechanism; 501. Driven gear; 502. Rotating rod; 503. Driving rack; 504. Connecting plate; 505. Extrusion plate; 506. Fixed rod; 507. Electric push rod; 6. Support assembly; 601. First tooth plate; 602. Guide rod; 603. Second tooth plate; 604. Reversing gear; 605. Support block; 606. First spring; 607. Trigger rod; 7. Radial pressure-applying mechanism; 701. Radial extrusion part; 702. Second spring; 703. Sliding rod; 704. Sliding sleeve; 705. Wedge block; 8. Shearing part; 9. Extrusion roller; 10. Mounting part; 11. Lifting screw; 12. Closing plate; 13. Crushing pad; 14. Rotating drive part; 15. Support frame. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 11 The present invention provides a technical solution: a geotechnical detection device for surveying engineering and mapping, including a control cabinet 2 and a base 3, a pressure-applying part 1 is provided on the top of the base 3, and a test bench 4 is provided on one side of the base 3 and the pressure-applying part 1. The test bench 4 at the top is driven downward to approach another test bench 4 for pressure testing by the pressure-applying part 1, and a leveling mechanism 5 is provided on one side of the test bench 4, and a shearing part 8 is provided on one side of the leveling mechanism 5. The shearing part 8 is driven by the leveling mechanism 5 to rotate and adhere to the surface of the test bench 4 to form a plane, and the detection mode is adjusted by the expansion of the shearing part 8; The test bench 4 is rotatably connected to the base 3 and one side of the pressure applying part 1 at the corresponding position, and a radial pressure applying mechanism 7 is provided on the side of the test bench 4 at the bottom side away from the shearing part 8. The radial pressure applying mechanism 7 includes a plurality of radial pressing parts 701 arranged around the axis of the test bench 4, and the radial pressing parts 701 are configured to move along the radial position of the test bench 4 to press the sample laterally; Specifically: through the designed leveling mechanism 5, the shearing parts 8 arranged opposite to each other on both sides can be rotated by the leveling mechanism 5, and after the shearing parts 8 are screwed into the receiving groove on the top of the test bench 4 and received, the surface of the test bench 4 can be made flat. At this time, the movement of the pressure-applying part 1 can realize the extrusion test of the test benches 4 on both sides, and when the shearing parts 8 are unfolded, a shear force test can be formed by the downward pressure of the shearing parts 8 on both sides. At the same time, after controlling the relative rotation of the test benches 4 on both sides, the radial extrusion part 701 located on the other side of the test bench 4 can move radially under pressure, and the radial extrusion part 701 that moves radially can perform an extrusion test on the outer peripheral side of the sample, so that the sample detection mode can be switched, which is beneficial to improving the adaptability of the test processing through the switchable test mode, without the need for additional switching of sample equipment and calibration and leveling, thereby improving the test accuracy.

[0019] See also Figure 6-Figure 9 The leveling mechanism 5 includes a rotating rod 502, which is connected to one side of the shearing portion 8, and the two ends of the rotating rod 502 are respectively rotatably connected to the receiving grooves opened on the top of the test plate, and the two ends of the rotating rod 502 are externally connected to driven gears 501, and the bottom of the driven gear 501 is meshed with a driving rack 503, and a connecting plate 504 is connected between the front ends of the driving racks 503 on both sides, and a pressing plate 505 is connected to one side of the connecting plate 504, and the pressing plate 505 is in contact with one side of the supporting assembly 6, and a fixing rod 506 is connected between the ends of the driving racks 503 on both sides away from the connecting plate 504, and an electric push rod 507 is connected to one side of the fixing rod 506, and the electric push rod 507 is connected to one side of the inner cavity of the receiving groove; The support assembly 6 includes a support block 605, one side of the support block 605 is connected to a first tooth plate 601, the bottom of the first tooth plate 601 is meshed with a reversing gear 604, the reversing gear 604 is rotatably connected to a slide groove provided on one side of the inner cavity of the accommodating groove, the other side of the reversing gear 604 is meshed with a second tooth plate 603, one end of the second tooth plate 603 close to the accommodating groove is connected to a trigger rod 607, and the trigger rod 607 extends to one side of the extrusion plate 505, and the movement of the extrusion plate 505 drives the second tooth plate 603 to drive the first tooth plate 601 and the support block 605 to extend toward the bottom side of the shearing portion 8; One end of the first tooth plate 601 away from the support block 605 is connected to a guide rod 602, and a first spring 606 is sleeved on the outside of the guide rod 602. The two ends of the first spring 606 are respectively connected to the first tooth plate 601 and the corresponding positions on one side of the inner cavity of the slideway; The cross-sectional shape of the connecting plate 504 is U-shaped, and the bottom of the connecting plate 504 extends to the bottom side of the accommodating groove. The extension of the connecting plate 504 to the bottom side of the accommodating groove avoids interference with the rotation and storage of the shearing portion 8.

[0020] The top of the test bench 4 is provided with an empty slot for the driven gear 501 to rotate out, and the driven gear 501 is a half gear; After the shearing portion 8 is completely attached to the test bench 4 , the portion of the driven gear 501 extending to the top of the empty slot is provided with a notched corner, so that the surface of the test bench 4 is in a flat state.

[0021] Specifically, through the designed leveling mechanism 5, when it is necessary to switch the position of the shearing portion 8, the electric push rod 507 can be extended to drive the fixed rod 506 to move, and the movement of the fixed rod 506 can drive the driving rack 503 to move, and the movement of the driving rack 503 can drive the meshing driven gear 501 to rotate, and the rotation of the driven gear 501 can drive the rotating rod 502 and the shearing portion 8 to rotate, and the shearing portion 8 can be extended from the accommodating groove, and the shearing portion 8 can be extended through the opposite surfaces of the test benches 4 on both sides to form a shearing test environment, which is conducive to the shearing processing of the sample block, and the electric push rod 507 can be shortened to pull the driving rack 503 to reset and drive the driven gear 501 and the shearing portion 8 to reset, and the shearing portion 8 can be moved into the test bench 4 by the reverse rotation, so that the surface of the test bench 4 can form a plane, which is convenient for pressure testing; Furthermore, through the designed support assembly 6, when the driving rack 503 drives the connecting plate 504 to move, the connecting plate 504 can drive the extrusion plate 505 to squeeze the trigger rod 607, and when the trigger rod 607 is squeezed, it can drive the second tooth plate 603 to move, and the movement of the second tooth plate 603 can drive the other side of the first tooth plate 601 to move through the reversing gear 604, and the movement of the first tooth plate 601 can drive the front side support block 605 to move toward the shearing portion 8, so that the abutment strength of the shearing portion 8 can be improved by the lateral abutment of the support block 605 against the shearing portion 8, which is conducive to improving the shearing stability; A closing plate 12 is connected to one side of the accommodating groove, a crush pad 13 is connected to one side of the closing plate 12, and the crush pad 13 is in contact with one side of the shearing portion 8.

[0022] Through the designed closing plate 12, when the shear portion 8 is opened, it can contact with the crush pad 13 on the front side of the closing plate 12. The crush pad 13 can be compressed when in contact, which is beneficial for fully closing the rotation gap of the shear portion 8 through the setting of the crush pad 13, reducing the gap after the shear portion 8 is rotated and accommodated, and improving the abutment support effect on the sample.

[0023] See also Figure 10-11, a slide bar 703 is connected to one side of the radial extrusion part 701, a sleeve 704 is provided on the outer sleeve of the slide bar 703, and the sleeve 704 is connected to one side of the test bench 4, a second spring 702 is provided on the outer sleeve of the slide bar 703, and two ends of the second spring 702 are respectively connected to the corresponding positions of the sleeve 704 and one side of the radial extrusion part 701, and a wedge block 705 is connected to one end of the slide bar 703 away from the radial extrusion part 701, and a plurality of mounting members 10 are equidistantly connected along the axis to one side of the test bench 4 at the top away from the shearing part 8, a nut is embedded in the top of the mounting member 10, and a lifting screw 11 is connected to the inner thread of the nut, and an extrusion roller 9 is connected to one end of the lifting screw 11, and the extrusion roller 9 is pressed down and contacts the wedge block 705 by rotating the test benches 4 on both sides; The pressure-applying part 1 includes a hydraulic drive part and a movable shaft, and the bottom end of the movable shaft is connected to a support frame 15, the test bench 4 at the top is rotatably connected to the inner cavity of the support frame 15, the test bench 4 at the bottom is rotatably connected to the top of the base 3, and the test benches 4 on both sides are provided with a rotating drive part 14.

[0024] The rotary drive unit 14 is a corresponding rotary cylinder or a rotary motor, which is a well-known technology in the relevant field and will not be elaborated on again; Specifically, when the test benches 4 on both sides rotate through the rotary drive unit 14 to make the squeezing rollers 9 correspond to the wedge blocks 705, the top pressure-applying unit 1 can drive the test bench 4 at the top to move downward when driving the support frame 15 to move downward. The downward movement of the test bench 4 can squeeze the wedge blocks 705 at the corresponding positions at the bottom through the squeezing rollers 9. When the wedge blocks 705 are squeezed, they can drive the slide bar 703 to move along the axial direction in the slide sleeve 704. The movement of the slide bar 703 can drive the radial squeezing unit 701 to squeeze the sample blocks whose inner sides are limited by the test benches 4 on both sides, so that the extrusion test of the sample circumference can be realized through the radially moving radial squeezing unit 701. By providing a variety of test methods through the flippable test bench 4, the detection adaptability of rock and soil in surveying and mapping engineering can be improved through different soil sample test methods. The radial extrusion portion 701, the shearing portion 8 and the bottom side of the test bench 4 are all provided with corresponding force sensing elements, and the force sensing elements are connected to the control cabinet 2 to determine the corresponding geotechnical data during detection.

[0025] Working principle: When the position of the shearing part 8 needs to be switched, the electric push rod 507 is extended to drive the fixed rod 506 to move, the fixed rod 506 moves to drive the driving rack 503 to move, the driving rack 503 moves to drive the meshing driven gear 501 to rotate, the driven gear 501 rotates to drive the rotating rod 502 and the shearing part 8 to rotate, the shearing part 8 rotates and unfolds from the accommodating groove, and the shearing test environment is formed by the shearing part 8 unfolded on the opposite sides of the test bench 4. The electric push rod 507 is shortened, and the driving rack 503 is pulled to reset, driving the driven gear 501 and the shearing part 8 to reset. The shearing part 8 is moved into the test bench 4 by reverse rotation, so that the surface of the test bench 4 forms a plane, and the pressure part 1 moves to realize the extrusion test of the test benches 4 on both sides; When the test benches 4 on both sides rotate through the rotary drive unit 14 to make the squeezing rollers 9 correspond to the wedge block 705, the top pressure unit 1 drives the support frame 15 to move downward, driving the test bench 4 at the top to move downward. The test bench 4 moves downward and squeezes the wedge block 705 at the corresponding position at the bottom through the squeezing roller 9. The wedge block 705 drives the slide bar 703 to move along the axial direction in the slide sleeve 704 when being squeezed. The movement of the slide bar 703 drives the radial squeezing unit 701 to squeeze the sample block whose inner side is limited by the test benches 4 on both sides. The radially moving radial squeezing unit 701 realizes the squeezing test on the periphery of the sample. ; In the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A geotechnical detection device for surveying engineering and mapping, comprising a control cabinet (2) and a base (3), wherein a pressure-applying portion (1) is provided on the top of the base (3), and a test bench (4) is provided on one side of the base (3) and the pressure-applying portion (1), wherein the pressure-applying portion (1) drives the test bench (4) located on the top downward to approach another test bench (4) for pressure testing, and wherein the device is characterized in that: A leveling mechanism (5) is provided on one side of the test bench (4), and a shearing portion (8) is provided on one side of the leveling mechanism (5). The shearing portion (8) is driven by the leveling mechanism (5) to rotate and adhere to the surface of the test bench (4) to form a plane, and the detection method is adjusted by expanding the shearing portion (8); The test bench (4) is rotatably connected to a base (3) and a side of a pressure-applying portion (1) at a corresponding position, and a radial pressure-applying mechanism (7) is provided on a side of the test bench (4) at the bottom, away from the shearing portion (8). The radial pressure-applying mechanism (7) comprises a plurality of radial pressing portions (701) arranged around an axis of the test bench (4), and the radial pressing portions (701) are configured to move along a radial position of the test bench (4) to laterally press the sample.

2. A geotechnical detection device for surveying engineering and mapping according to claim 1, characterized in that: The leveling mechanism (5) comprises a rotating rod (502), the rotating rod (502) being connected to one side of the shearing portion (8), the two ends of the rotating rod (502) being rotatably connected to a receiving groove opened at the top of the test plate, the two ends of the rotating rod (502) being externally connected to driven gears (501), the bottom of the driven gear (501) being meshed with a driving rack (503), and a connecting plate (504) being connected between the front ends of the driving racks (503) on both sides, one side of the connecting plate (504) being connected to an extrusion plate (505), and the extrusion plate (505) being in contact with one side of the supporting assembly (6), and a fixing rod (506) being connected between the ends of the driving racks (503) on both sides away from the connecting plate (504), one side of the fixing rod (506) being connected to an electric push rod (507), and the electric push rod (507) being connected to one side of the inner cavity of the receiving groove.

3. A geotechnical detection device for surveying engineering and mapping according to claim 2, characterized in that: The support assembly (6) comprises a support block (605), one side of the support block (605) is connected to a first tooth plate (601), the bottom of the first tooth plate (601) is meshed with a reversing gear (604), the reversing gear (604) is rotatably connected to a slide groove opened on one side of the inner cavity of the accommodating groove, the other side of the reversing gear (604) is meshed with a second tooth plate (603), one end of the second tooth plate (603) close to the accommodating groove is connected to a trigger rod (607), and the trigger rod (607) extends to one side of the extrusion plate (505), and the movement of the extrusion plate (505) drives the second tooth plate (603) to drive the first tooth plate (601) and the support block (605) to extend toward the bottom side of the shearing portion (8).

4. A geotechnical detection device for surveying engineering and mapping according to claim 3, characterized in that: One end of the first tooth plate (601) away from the support block (605) is connected to a guide rod (602), and a first spring (606) is sleeved on the outside of the guide rod (602). Two ends of the first spring (606) are respectively connected to the first tooth plate (601) and corresponding positions on one side of the inner cavity of the slide groove.

5. A geotechnical detection device for surveying engineering and mapping according to claim 3, characterized in that: The cross-sectional shape of the connecting plate (504) is U-shaped, and the bottom of the connecting plate (504) extends to the bottom side of the accommodating groove, and the extension of the connecting plate (504) to the bottom side of the accommodating groove avoids interference with the rotational storage of the shearing portion (8).

6. A geotechnical detection device for surveying engineering and mapping according to claim 1, characterized in that: The top of the test bench (4) is provided with an empty slot for the driven gear (501) to be rotated out, and the driven gear (501) is a half gear.

7. A geotechnical detection device for surveying engineering and mapping according to claim 3, characterized in that: A closing plate (12) is connected to one side of the accommodating groove, a crush pad (13) is connected to one side of the closing plate (12), and the crush pad (13) is in contact with one side of the shearing portion (8).

8. A geotechnical detection device for surveying engineering and mapping according to claim 1, characterized in that: A slide bar (703) is connected to one side of the radial extrusion portion (701), and a sleeve (704) is disposed on the outer sleeve of the slide bar (703). The sleeve (704) is connected to one side of the test bench (4). A second spring (702) is disposed on the outer sleeve of the slide bar (703). Two ends of the second spring (702) are respectively connected to corresponding positions of the sleeve (704) and one side of the radial extrusion portion (701). One end of the slide bar (703) away from the radial extrusion portion (701) is connected to a wedge block (705). A side of the test bench (4) located at the top and away from the shearing portion (8) is equidistantly connected to a plurality of mounting members (10) along the axis. A nut is embedded in the top of the mounting member (10), and a lifting screw (11) is connected to the inner thread of the nut. One end of the lifting screw (11) is connected to an extrusion roller (9). The extrusion roller (9) is pressed down to contact the wedge block (705) by rotating the test benches (4) on both sides.

9. A geotechnical detection device for surveying engineering and mapping according to claim 1, characterized in that: The pressure-applying portion (1) comprises a hydraulic drive portion and a movable shaft, the bottom end of the movable shaft is connected to a support frame (15), the test bench (4) located at the top is rotatably connected to the inner cavity of the support frame (15), the test bench (4) located at the bottom is rotatably connected to the top of the base (3), and the test benches (4) on both sides are provided with a rotary drive portion (14).

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