A geotechnical detection device for engineering surveying and mapping

Abstract

The application discloses a kind of geotechnical detection devices for surveying and mapping engineering measurement, belong to geotechnical test technical field, including control cabinet and base, base top is equipped with pressure part, base and pressure part side are equipped with test table.The application, by the leveling mechanism of design, the shear part of two sides relatively arranged is rotated by leveling mechanism, the shear part is again received after being rotated into the test table top housing slot, so that the surface of test table becomes plane, at this time, the extrusion test of two sides test table can be realized by the movement of pressure part, when the shear part is unfolded, the shear force test can be formed by the depression of two sides shear part, after the relative rotation of control two sides test table, the radial extrusion part located in the other side of test table can move radially under pressure, the radial extrusion part of radial movement can be extruded to the outer circumferential side of sample, it is favorable to improve test processing adaptability by switchable test mode, without additional switching sample equipment and calibration leveling, improve test precision.

Description

Technical Field

[0001] This invention belongs to the field of geotechnical testing technology, and in particular relates to a geotechnical testing device for engineering surveying. Background Technology

[0002] In surveying engineering, soil and rock testing is typically required to ensure the safety, stability, and economy of the project. By measuring the properties of soil and rock, the stability and safety of structures can be analyzed. Indoor testing equipment generally includes triaxial compression testers and direct shear testers, used for detailed testing of soil and rock samples in the laboratory.

[0003] Chinese invention patent CN118168928A discloses a soil and rock core testing device, including a first housing and a first valve. The first housing has a closed door at its front end, and the first valve is connected to the lower part of the outer wall of the first housing. The device 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 mounted vertically on the top of the first housing, and the second support column is slidably mounted vertically on the bottom of the first housing. The clamping device is mounted on the bottom of the first support column and the top of the second support column. The clamping device is used to fix the soil and rock sample core. The left end of the horizontal arm is rotatably connected to the top of the first support column, and the top of the first support member is rotatably installed on the outer wall of the left side of the horizontal arm. It reduces the driving load when pressing and stretching the soil and rock sample core, improves the force balance effect at both ends of the soil and rock sample core, reduces the complexity of soil and rock sample core testing, and improves work efficiency. The above scheme applies force to test the soil and rock sample core through the clamping devices on both sides. However, in actual use, in order to switch test schemes, the soil and rock sample core needs to be switched between different devices, resulting in poor efficiency of soil and rock sample testing. There is room for improvement. Summary of the Invention

[0004] The purpose of this invention is to solve the problem of poor efficiency in soil and rock sampling due to the need to switch between different devices for soil and rock core samples, and to propose a soil and rock testing device for surveying engineering.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A geotechnical testing device for engineering surveying includes a control cabinet and a base. The top of the base is provided with a pressure-applying part, and a test platform is provided on one side of both the base and the pressure-applying part. The pressure-applying part drives the test platform located at the top to move downward and approach the other test platform to perform pressure testing. A leveling mechanism is provided on one side of the test platform, and a shearing part is provided on one side of the leveling mechanism. The shearing part is driven to rotate by the leveling mechanism and then fits against the surface of the test platform to form a plane. The detection method is adjusted by unfolding the shearing part.

[0007] The test bench is rotatably connected to the base and the pressure part at the corresponding position. A radial pressure mechanism is provided on the side of the test bench away from the shearing part at the bottom. The radial pressure mechanism includes a plurality of radial extrusion parts arranged around the axis of the test bench. The radial extrusion parts are configured to move along the radial position of the test bench to laterally press the sample.

[0008] As a further description of the above technical solution:

[0009] The leveling mechanism includes a rotating rod that passes through and is connected to one side of the shearing section. Both ends of the rotating rod are rotatably connected to a receiving groove opened on the top of the test plate. Driven gears are externally connected to both ends of the rotating rod. Driven gears mesh with drive racks at their bottoms. A connecting plate is connected between the front ends of the drive racks on both sides. A pressing plate is connected to one side of the connecting plate and contacts one side of the support assembly. A fixing rod is connected between the ends of the drive racks on both sides away from the connecting plate. An electric push rod is connected to one side of the fixing rod and is connected to one side of the cavity of the receiving groove.

[0010] As a further description of the above technical solution:

[0011] The support assembly includes a support block. A first toothed plate is connected to one side of the support block. A reversing gear is meshed at the bottom of the first toothed plate. The reversing gear is rotatably connected to a sliding groove opened on one side of the cavity of the receiving groove. A second toothed plate is meshed on the other side of the reversing gear. A trigger rod is connected to one end of the second toothed plate near the receiving groove. The trigger rod extends to one side of the extrusion plate. The movement of the extrusion plate drives the second toothed plate to drive the first toothed plate and the support block to extend to the bottom side of the shearing section.

[0012] As a further description of the above technical solution:

[0013] The first toothed plate has a guide rod connected to the end away from the support block. A first spring is sleeved on the outside of the guide rod, and the two ends of the first spring are respectively connected to the corresponding positions of the first toothed plate and the inner cavity of the slide groove.

[0014] As a further description of the above technical solution:

[0015] The connecting plate has a U-shaped cross-section, with its bottom extending to the bottom of the receiving groove. This extension of the connecting plate to the bottom of the receiving groove prevents interference with the rotational storage of the shearing section.

[0016] As a further description of the above technical solution:

[0017] The test bench has a slot on the top for the driven gear to rotate out, and the driven gear is a half gear.

[0018] As a further description of the above technical solution:

[0019] A sealing plate is connected to one side of the receiving groove, and a shrinkage pad is connected to one side of the sealing plate, with the shrinkage pad in contact with one side of the shearing part.

[0020] As a further description of the above technical solution:

[0021] A sliding rod is connected to one side of the radial extrusion section, 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 platform. A second spring is provided on the outer sleeve of the sliding rod. The two ends of the second spring are respectively connected to the sliding sleeve and the corresponding position on one side of the radial extrusion section. A wedge is connected to the end of the sliding rod away from the radial extrusion section. Multiple mounting parts are equidistantly connected around the side of the test platform at the top away from the shearing section along the axis. Nuts are embedded in the top of the mounting parts, and lifting screws are connected to the internal threads of the nuts. One end of the lifting screw is connected to an extrusion roller. The extrusion roller is pressed down and contacts the wedge after the test platforms on both sides are rotated.

[0022] As a further description of the above technical solution:

[0023] The pressure application unit includes a hydraulic drive unit and a moving shaft. The bottom end of the moving shaft is connected to a support frame. The test platform located at the top is rotatably connected to the inner cavity of the support frame, and the test platform located at the bottom is rotatably connected to the top of the base. Both test platforms on both sides are equipped with a rotation drive unit.

[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0025] 1. In this invention, the leveling mechanism can rotate the shearing parts arranged opposite to each other on both sides. After the shearing parts are screwed into the receiving groove at the top of the test platform, the surface of the test platform becomes flat. At this time, the movement of the pressure part can realize the extrusion test of the two test platforms. When the shearing parts are unfolded, the shearing force test can be formed by the downward pressure of the shearing parts on both sides. After controlling the relative rotation of the two test platforms, the radial extrusion part located on the other side of the test platform can move radially under pressure. The radially moving radial extrusion part can perform extrusion test on the outer periphery of the sample. It is beneficial to improve the adaptability of test processing through switchable test modes, without the need for additional sample equipment switching and calibration leveling, thus improving test accuracy.

[0026] 2. In this invention, through the designed support component, when the drive rack moves the connecting plate, the connecting plate can move the extrusion plate to extrude the trigger rod. When the trigger rod is extruded, it can move the second toothed plate. The movement of the second toothed plate can move the first toothed plate on the other side through the reversing gear. The movement of the first toothed plate can move the front support block towards the shearing part. The lateral contact of the support block towards the shearing part can improve the contact strength of the shearing part, which is beneficial to improving the shearing stability.

[0027] 3. In this invention, after the two test stands rotate through the rotation drive unit to align the extrusion rollers with the wedges, the top pressure unit drives the support frame to move downward, which in turn drives the test stand located at the top to move downward. The downward movement of the test stand can extrude the wedges at the corresponding positions at the bottom through the extrusion rollers. When the wedges are extruded, they can drive the slide rod to move along the axial direction within the slide sleeve. The movement of the slide rod can drive the radial extrusion unit to extrude the sample block that is limited by the two test stands on the inner side. The radial extrusion unit moves radially to achieve the extrusion test on the periphery of the sample. The flip-up test stand provides multiple testing methods and improves the adaptability of soil and rock detection in surveying engineering through different soil sample testing methods. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a geotechnical testing device for surveying engineering proposed in this invention;

[0029] Figure 2 This is a schematic diagram showing the disassembled structure of a geotechnical testing device for surveying engineering proposed in this invention;

[0030] Figure 3 This is a schematic diagram of the overall structure of the test platform of the geotechnical testing device for surveying engineering proposed in this invention;

[0031] Figure 4 This is a schematic diagram of the lateral structure of a geotechnical testing device for surveying engineering proposed in this invention;

[0032] Figure 5 The present invention proposes Figure 4 Enlarged structural diagram of part A in the middle;

[0033] Figure 6 This is a schematic diagram of a half-section of the test platform of a geotechnical testing device for surveying engineering proposed in this invention.

[0034] Figure 7 This is a schematic diagram of the transverse structure of the test platform of a geotechnical testing device for surveying engineering proposed in this invention;

[0035] Figure 8 This is a schematic diagram of the disassembled structure of the leveling mechanism of a geotechnical testing device for surveying engineering proposed in this invention;

[0036] Figure 9 This is a schematic diagram of the leveling mechanism assembly structure of a geotechnical testing device for surveying engineering proposed in this invention;

[0037] Figure 10 This is a bottom view schematic diagram of the test platform structure of a geotechnical testing device for surveying engineering proposed in this invention;

[0038] Figure 11This is a schematic diagram of the radial pressure mechanism of a geotechnical testing device for engineering surveying proposed in this invention.

[0039] Legend:

[0040] 1. Pressure application section; 2. Control cabinet; 3. Base; 4. Test bench; 5. Leveling mechanism; 501. Driven gear; 502. Rotating rod; 503. Drive rack; 504. Connecting plate; 505. Extrusion plate; 506. Fixing rod; 507. Electric push rod; 6. Support assembly; 601. First toothed plate; 602. Guide rod; 603. Second toothed plate; 604. Reversing gear; 605. Support block; 606. First spring; 607. Trigger rod; 7. Radial pressure application mechanism; 701. Radial extrusion section; 702. Second spring; 703. Sliding rod; 704. Sliding sleeve; 705. Wedge block; 8. Shearing section; 9. Extrusion roller; 10. Mounting component; 11. Lifting screw; 12. Sealing plate; 13. Collapse pad; 14. Rotary drive section; 15. Support frame. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figures 1-11 The present invention provides a technical solution: a geotechnical testing device for engineering surveying, including a control cabinet 2 and a base 3. The base 3 is provided with a pressure application part 1 on the top. Both the base 3 and the pressure application part 1 are provided with a test platform 4 on one side. The pressure application part 1 drives the test platform 4 located at the top to move downward and approach the other test platform 4 to perform pressure testing. A leveling mechanism 5 is provided on one side of the test platform 4. 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 fit against the surface of the test platform 4 to form a plane. The detection method is adjusted by unfolding the shearing part 8.

[0043] The test bench 4 is rotatably connected to the base 3 and the pressure part 1 at the corresponding position. A radial pressure mechanism 7 is provided on the side of the test bench 4 at the bottom away from the shearing part 8. The radial pressure mechanism 7 includes a plurality of radial extrusion parts 701 arranged around the axis of the test bench 4. The radial extrusion parts 701 are configured to move along the radial position of the test bench 4 to laterally press the sample.

[0044] Specifically, the leveling mechanism 5 allows the shearing sections 8, which are arranged opposite each other on both sides, to be rotated. After the shearing sections 8 are screwed into the receiving groove at the top of the test platform 4, the surface of the test platform 4 becomes flat. At this time, the pressure section 1 can move to realize the extrusion test of the test platforms 4 on both sides. When the shearing sections 8 are unfolded, the shearing force test can be formed by the downward pressure of the shearing sections 8 on both sides. At the same time, after controlling the relative rotation of the test platforms 4 on both sides, the radial extrusion section 701 located on the other side of the test platform 4 can move radially under pressure. The radially moving radial extrusion section 701 can perform an extrusion test on the outer periphery of the sample, thereby switching the sample detection mode. This is beneficial to improve the adaptability of test processing through the switchable test mode, without the need for additional sample equipment switching and calibration leveling, thus improving the test accuracy.

[0045] Please see Figures 6-9 The leveling mechanism 5 includes a rotating rod 502, which is connected through to one side of the shearing part 8. Both ends of the rotating rod 502 are rotatably connected to the receiving groove opened on the top of the test plate. Driven gears 501 are externally connected to both ends of the rotating rod 502. Driven gears 503 mesh with the bottom of the driven gears 501. A connecting plate 504 is connected between the front ends of the two drive racks 503. A pressing plate 505 is connected to one side of the connecting plate 504. The pressing plate 505 is in contact with one side of the support component 6. A fixing rod 506 is connected between the ends of the two drive racks 503 away from the connecting plate 504. An electric push rod 507 is connected to one side of the fixing rod 506. The electric push rod 507 is connected to one side of the cavity of the receiving groove.

[0046] The support assembly 6 includes a support block 605. A first toothed plate 601 is connected to one side of the support block 605. A reversing gear 604 is meshed at the bottom of the first toothed plate 601. The reversing gear 604 is rotatably connected to a sliding groove opened on one side of the cavity of the receiving groove. A second toothed plate 603 is meshed on the other side of the reversing gear 604. A trigger rod 607 is connected to one end of the second toothed plate 603 near the receiving groove. The trigger rod 607 extends to one side of the extrusion plate 505. The movement of the extrusion plate 505 drives the second toothed plate 603 to drive the first toothed plate 601 and the support block 605 to extend towards the bottom side of the shearing part 8.

[0047] A guide rod 602 is connected to one end of the first toothed plate 601 away from the support block 605. 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 corresponding positions of the first toothed plate 601 and the inner cavity of the slide groove.

[0048] The connecting plate 504 has a U-shaped cross-section and extends to the bottom of the receiving groove. The extension of the connecting plate 504 to the bottom of the receiving groove avoids interference with the rotation and storage of the shearing part 8.

[0049] The test bench 4 has a slot on its top for the driven gear 501 to rotate out. The driven gear 501 is a half gear.

[0050] After the shearing part 8 is fully fitted to the test bench 4, the portion of the driven gear 501 extending to the top of the slot is designed with a notch to make the surface of the test bench 4 flat.

[0051] Specifically, the leveling mechanism 5, when the position of the shearing part 8 needs to be switched, can extend the electric push rod 507 to move the fixed rod 506. The movement of the fixed rod 506 can move the drive rack 503. The movement of the drive rack 503 can rotate the meshing driven gear 501. The rotation of the driven gear 501 can rotate the rotating rod 502 and the shearing part 8. The rotation of the shearing part 8 can extend into the accommodating groove. The shearing part 8, which extends from the opposite sides of the test platform 4, can form a shearing test environment, which is conducive to the shearing of the sample block. The electric push rod 507 can shorten the working length, thereby pulling the drive rack 503 to reset and driving the driven gear 501 and the shearing part 8 to reset. The shearing part 8, which rotates in the opposite direction, can move into the test platform 4, thereby making the surface of the test platform 4 flat, which is convenient for pressure testing.

[0052] Furthermore, through the designed support component 6, when the drive rack 503 drives the connecting plate 504 to move, the connecting plate 504 can drive the pressing plate 505 to press the trigger rod 607. When the trigger rod 607 is pressed, it can drive the second toothed plate 603 to move. The movement of the second toothed plate 603 can drive the first toothed plate 601 on the other side to move through the reversing gear 604. The movement of the first toothed plate 601 can drive the front support block 605 to move towards the shearing part 8. Thus, the lateral contact of the support block 605 with the shearing part 8 can improve the contact strength of the shearing part 8, which is beneficial to improving the shearing stability.

[0053] A sealing plate 12 is connected to one side of the receiving groove, and a collapse pad 13 is connected to one side of the sealing plate 12, and the collapse pad 13 is in contact with one side of the shearing part 8.

[0054] With the design of the sealing plate 12, when the shearing part 8 is opened, it can contact the front collapse pad 13 of the sealing plate 12. The collapse pad 13 can be compressed upon contact, which helps to fully seal the rotation gap of the shearing part 8 through the setting of the collapse pad 13, reduce the gap after the shearing part 8 is rotated and accommodated, and improve the abutment support effect on the sample.

[0055] Please see Figures 10-11The radial extrusion section 701 is connected to a slide rod 703 on one side. The slide rod 703 is fitted with a sliding sleeve 704, which is connected to one side of the test platform 4. The slide rod 703 is fitted with a second spring 702. The two ends of the second spring 702 are respectively connected to the sliding sleeve 704 and the corresponding position of one side of the radial extrusion section 701. The end of the slide rod 703 away from the radial extrusion section 701 is connected to a wedge block 705. The test platform 4 at the top is connected to multiple mounting parts 10 at equal intervals along the axis on the side away from the shearing section 8. The top of the mounting part 10 is fitted with a nut, and the nut is internally threaded to a lifting screw 11. One end of the lifting screw 11 is connected to an extrusion roller 9. The extrusion roller 9 is pressed down and contacts the wedge block 705 by rotating the test platforms 4 on both sides.

[0056] The pressure application unit 1 includes a hydraulic drive unit and a moving shaft, and the bottom end of the moving shaft is connected to a support frame 15. The test platform 4 located at the top is rotatably connected to the inner cavity of the support frame 15, and the test platform 4 located at the bottom is rotatably connected to the top of the base 3. Both test platforms 4 on both sides are provided with a rotation drive unit 14.

[0057] The rotary drive unit 14 is a corresponding rotary cylinder or rotary motor. This part is well-known in the field and will not be described further.

[0058] Specifically, when the two test platforms 4 rotate through the rotary drive unit 14 to make the extrusion roller 9 correspond to the wedge block 705, the top pressure unit 1 drives the support frame 15 to move downward, which can drive the test platform 4 located at the top to move downward. The downward movement of the test platform 4 can extrude the wedge block 705 at the corresponding position at the bottom through the extrusion roller 9. When the wedge block 705 is extruded, it can drive the slide rod 703 to move along the axial direction in the sliding sleeve 704. The movement of the slide rod 703 can drive the radial extrusion unit 701 to extrude the sample block that is limited by the two test platforms 4 on the inner side. Thus, the radial extrusion unit 701 can be used to perform extrusion test on the periphery of the sample. The flip-up test platform 4 provides multiple test methods and improves the adaptability of soil and rock detection in surveying and mapping projects through different soil sample test methods.

[0059] The radial compression section 701, the shear section 8, and the bottom of the test platform 4 are all equipped with corresponding force sensing elements, and the force sensing elements are connected to the control cabinet 2 to determine the corresponding soil and rock data during the test.

[0060] Working principle:

[0061] When it is necessary to switch the position of the shearing section 8, the electric push rod 507 extends to move the fixed rod 506. The movement of the fixed rod 506 moves the drive rack 503, which in turn rotates the meshing driven gear 501. The rotation of the driven gear 501 causes the rotating rod 502 and the shearing section 8 to rotate. The shearing section 8 rotates and extends out from the receiving groove, forming a shearing test environment through the shearing section 8 extending from the opposite surfaces of the two test platforms 4.

[0062] The electric push rod 507 shortens the working length, pulls the drive rack 503 to reset, drives the driven gear 501 and the shearing part 8 to reset, and moves the shearing part 8 into the test table 4 through the reverse rotation, so that the surface of the test table 4 forms a plane, and the pressure part 1 moves to realize the compression test of the test tables 4 on both sides.

[0063] When the two test platforms 4 rotate via the rotary drive unit 14 to align the extrusion roller 9 with the wedge block 705, the top pressure unit 1 drives the support frame 15 to move downwards, causing the test platform 4 at the top to move downwards. The downward movement of the test platform 4, through the extrusion roller 9, extrudes the wedge block 705 at the corresponding position at the bottom. Under this pressure, the wedge block 705 causes the slide rod 703 to move along the axial direction within the sliding sleeve 704. The movement of the slide rod 703 causes the radial extrusion unit 701 to extrude the sample block, which is limited on the inner side by the two test platforms 4. The radially moving radial extrusion unit 701 performs the extrusion test on the circumference of the sample.

[0064] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0065] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A geotechnical testing device for engineering surveying, comprising a control cabinet (2) and a base (3), wherein a pressure-applying part (1) is provided on the top of the base (3), and a test platform (4) is provided on one side of both the base (3) and the pressure-applying part (1), wherein the pressure-applying part (1) drives the test platform (4) located at the top to move downward toward the other test platform (4) for pressure testing, characterized in that, The test bench (4) is provided with a leveling mechanism (5) on one side, and a shearing part (8) is provided on one side of the leveling mechanism (5). The shearing part (8) is a wedge-shaped component that can rotate around the edge axis of the test bench (4). When the shearing parts (8) on both sides are unfolded, they press down to form a wedge-shaped cross shearing. After the leveling mechanism (5) drives the shearing part (8) to rotate, it fits against the surface of the test bench (4) to form a plane. The detection method is adjusted by unfolding the shearing part (8). The test bench (4) is rotatably connected to the base (3) and the pressure part (1) at the corresponding position. A radial pressure mechanism (7) is provided on the side of the test bench (4) at the bottom away from the shear part (8). The radial pressure mechanism (7) includes a plurality of radial extrusion parts (701) arranged around the axis of the test bench (4). The radial extrusion parts (701) are configured to move along the radial position of the test bench (4) to laterally press the sample. The leveling mechanism (5) includes a rotating rod (502), which is connected through the shearing part (8) on one side. The two ends of the rotating rod (502) are rotatably connected to the receiving groove opened on the top of the test plate. The two ends of the rotating rod (502) are externally connected to driven gears (501). The bottom of the driven gears (501) is meshed with a drive rack (503). A connecting plate (504) is connected between the front ends of the two drive racks (503). A pressing plate (505) is connected to one side of the connecting plate (504). The pressing plate (505) is in contact with one side of the support component (6). A fixing rod (506) is connected between the ends of the two drive racks (503) away from the connecting plate (504). An electric push rod (507) is connected to one side of the fixing rod (506). The electric push rod (507) is connected to one side of the cavity of the receiving groove. The support assembly (6) includes a support block (605). A first toothed plate (601) is connected to one side of the support block (605). A reversing gear (604) is meshed at the bottom of the first toothed plate (601). The reversing gear (604) is rotatably connected to a sliding groove opened on one side of the cavity of the receiving groove. A second toothed plate (603) is meshed on the other side of the reversing gear (604). A trigger rod (607) is connected to one end of the second toothed plate (603) near the receiving groove. The trigger rod (607) extends to one side of the extrusion plate (505). The movement of the extrusion plate (505) drives the second toothed plate (603) to drive the first toothed plate (601) and the support block (605) to extend towards the bottom of the shearing part (8). The extrusion plate (505) triggers the action synchronously during the unfolding of the shearing part (8). A sliding rod (703) is connected to one side of the radial extrusion section (701). A sliding sleeve (704) is provided on the outer sleeve of the sliding rod (703). The sliding sleeve (704) is connected to one side of the test platform (4). A second spring (702) is provided on the outer sleeve of the sliding rod (703). The two ends of the second spring (702) are respectively connected to the corresponding positions of the sliding sleeve (704) and the radial extrusion section (701). A wedge (705) is connected to one end of the sliding rod (703) away from the radial extrusion section (701). Multiple mounting parts (10) are equidistantly connected around the side of the test platform (4) at the top away from the shearing section (8) along the axis. A nut is embedded at the top of the mounting part (10), and a lifting screw (11) is connected to the inner thread of the nut. A pressing roller (9) is connected to one end of the lifting screw (11). The pressing roller (9) is pressed down and contacts the wedge (705) by rotating the test platforms (4) on both sides. The pressure application part (1) includes a hydraulic drive part and a moving shaft. The bottom end of the moving shaft is connected to a support frame (15). The test platform (4) located at the top is rotatably connected to the inner cavity of the support frame (15), and the test platform (4) located at the bottom is rotatably connected to the top of the base (3). Both test platforms (4) on both sides are provided with a rotation drive part (14).

2. The geotechnical testing device for engineering surveying according to claim 1, characterized in that, The first toothed plate (601) is connected to a guide rod (602) at one end away from the support block (605). 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 corresponding positions of the first toothed plate (601) and the inner cavity of the slide groove.

3. The geotechnical testing device for engineering surveying according to claim 2, characterized in that, The connecting plate (504) has a U-shaped cross section and extends to the bottom of the receiving groove. The extension of the connecting plate (504) to the bottom of the receiving groove avoids interference with the rotation and storage of the shearing part (8).

4. The geotechnical testing device for surveying engineering according to claim 1, characterized in that, The test bench (4) has a slot on top for the driven gear (501) to rotate out. The driven gear (501) is a half gear.

5. A geotechnical testing device for surveying engineering according to claim 1, characterized in that, A sealing plate (12) is connected to one side of the receiving groove, and a shrinkage pad (13) is connected to one side of the sealing plate (12), and the shrinkage pad (13) is in contact with one side of the shearing part (8).

Images