Foam light soil fluid solidified layer strength portable detection device and method

Abstract

The application discloses a portable detection device and method for the strength of a foam light soil fluid solidified layer, and relates to the field of foam light soil.The device comprises a base, a position adjusting mechanism arranged on the side of the base, a vertical plate arranged on the position adjusting mechanism, a first fixing plate and a second fixing plate arranged on the side of the vertical plate, a probe rod arranged between the first fixing plate and the second fixing plate, a probe arranged at the bottom of the probe rod, a measuring module arranged on the side of the vertical plate, a counterweight arranged in the middle of the probe rod, a drop hammer arranged in the middle of the probe rod, and an automatic lifting mechanism arranged on the vertical plate.The automatic lifting mechanism is used for lifting the drop hammer, effectively eliminates the operation error introduced by manually lifting the hammer in the control of the falling distance and the release posture, and thus guarantees the high consistency of the penetration energy and the repeatability of the test data.

Description

Technical Field

[0001] This invention relates to the technical field of foamed lightweight soil, specifically to a portable testing device and method for the strength of the fluidized solidified layer of foamed lightweight soil. Background Technology

[0002] Foamed lightweight soil, a novel building material characterized by its lightweight, high fluidity, and self-supporting properties upon hardening, has been widely used in highway widening projects to address differential settlement at the junction of new and old roadbeds and for abutment backfilling. During highway widening construction, the foamed lightweight soil forms a fluidized solidified layer after pouring. Its early strength and the uniformity of its hardened strength are key indicators for controlling construction progress and ensuring the overall stability of the roadbed. Insufficient strength of the solidified layer can lead to serious defects such as pavement structural cracking and uneven settlement. Therefore, it is essential to conduct rapid and accurate strength testing of the foamed lightweight soil solidified layer at the construction site.

[0003] Currently, on-site testing of the strength of foamed lightweight soil largely relies on drop hammer penetration instruments or static cone penetrators. However, in practical applications such as large-area construction testing for highway widening, traditional drop hammer penetration instruments often require manual hammer lifting and release. When conducting continuous testing at multiple points, operators find it difficult to ensure that the drop height of the hammer is completely consistent for each test, and unintentional lateral swaying or gripping resistance can easily be introduced during hammer release. This operational deviation leads to inconsistent penetration energy, directly affecting the accuracy of the probe's penetration depth measurement, and consequently reducing the repeatability and reliability of the compressive strength conversion results.

[0004] Based on this, the present invention provides a portable testing device and method for the strength of foamed lightweight soil fluidized solidification layer. Summary of the Invention

[0005] To address the problems mentioned in the background art, this invention provides a portable testing device and method for the strength of foamed lightweight soil fluidized solidification layers. This device enables on-site strength testing and achieves fully automated control of the entire process, including hammer lifting, fixed-height release, and automatic reset. It effectively eliminates operational errors introduced by manual hammer lifting in terms of drop distance control and release posture, thus ensuring high consistency of penetration energy and repeatability of test data. Furthermore, this design facilitates rapid screening at multiple points within the same construction layer, allowing for a comprehensive assessment of the planar uniformity of the layer's strength and significantly mitigating the risk of misjudgment that may arise from discrete data at single points.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A portable strength testing device for a foamed lightweight soil fluidized solidification layer includes a base; a position adjustment mechanism disposed on the side of the base; a vertical plate disposed on the position adjustment mechanism for adjusting the position of the vertical plate; a first fixing plate and a second fixing plate, both disposed on the side of the vertical plate, with a probe disposed between the first fixing plate and the second fixing plate, and a probe being disposed at the bottom of the probe; a measuring module disposed on the side of the vertical plate, with the top end of the probe extending through the measuring module for testing strength; a counterweight disposed in the middle of the probe; a drop hammer disposed in the middle of the probe for impacting the counterweight; and an automatic lifting mechanism disposed on the vertical plate for lifting the drop hammer.

[0008] Furthermore, the position adjustment mechanism includes a horizontal plate rotatably disposed on the top of the base; a driven gear disposed on the rotating shaft of the horizontal plate; a rack plate slidably disposed on the top of the base, and the rack plate meshing with the driven gear; a driving member disposed on the top of the base for driving the rack plate to move horizontally on the base; and a vertical plate detachably disposed on the side end of the horizontal plate.

[0009] Furthermore, the position adjustment mechanism also includes an arc-shaped guide rail disposed on the side of the base; the bottom of the horizontal plate is movably connected to the arc-shaped guide rail via a pivot.

[0010] Furthermore, the automatic lifting mechanism includes a pair of guide rails symmetrically arranged on the sides of the upright plate, and a clamping member is provided in each guide rail; a pair of connecting rods are provided on the side of the drop hammer, and the two clamping members can simultaneously clamp their respective connecting rods; a driving assembly is provided at the top of the guide rails for driving the clamping members to move up and down along the guide rails; wherein, the driving assembly is configured to drive the clamping members to move up and down within the guide rails, and when the clamping members move down, they contact and clamp the corresponding connecting rods to lift the drop hammer; when the clamping members move up to the top of the guide rails, they release the connecting rods, allowing the drop hammer to fall freely.

[0011] Furthermore, the first fixing plate has a notch inside, and the probe rod has a convex plate in the middle. When the drop hammer moves upward, it can bring the convex plate into the notch to fix the position of the probe rod.

[0012] Furthermore, the clamping member includes a slider slidably disposed within the guide rail; a pair of clamping bars, both hinged to the side of the slider, and a spring telescopic member disposed between the two clamping bars; a tapered opening is provided at the top of the guide rail, and the two clamping bars can rotate when inserted into the tapered opening, releasing the clamping of the connecting rod.

[0013] Furthermore, the drive assembly includes a rack disposed on the top of the slider; a drive gear disposed on the top of the guide rail via a bracket, the drive gear meshing with the rack, and a second drive component disposed on the bracket for driving the drive gear to rotate.

[0014] Furthermore, the drive assembly includes a servo electric actuator disposed on the side of the upright plate, and the output end of the servo electric actuator is connected to the top of the slider.

[0015] Furthermore, a movable platform is provided at the bottom of the base, four leveling components are provided between the base and the movable platform, and a spirit level is provided at the top of the base.

[0016] A method for using a portable testing device for the strength of a foamed lightweight soil fluidized bed, applicable to a portable testing device for the strength of a foamed lightweight soil fluidized bed, includes the following steps:

[0017] Select a testing point in the solidified area of ​​the foamed lightweight soil, place the testing device in place, and adjust the base to make it horizontal.

[0018] The drive component moves the corresponding clamping component downward, causing the clamping component to hold the connecting rods on both sides of the drop hammer.

[0019] The drive assembly continues to move the clamping parts upward. When the clamping parts approach the top of the guide rail, the two clamping parts simultaneously release their grip on the connecting rod. The drop hammer then falls freely and impacts the counterweight. The resulting impact force is transmitted to the probe through the probe rod, causing the probe to penetrate into the foamed lightweight soil.

[0020] The measurement module reads the penetration amount of the probe and converts the penetration amount into the corresponding compressive strength value according to the compressive strength-penetration amount relationship curve;

[0021] Subsequently, the position of the upright plate is adjusted by the position adjustment mechanism, and the penetration and measurement steps are repeated to achieve automated multi-point detection of foamed lightweight soil.

[0022] Compared with the prior art, the portable testing device and method for the strength of foamed lightweight soil fluidized solidification layer provided by the present invention has the following beneficial effects:

[0023] This device can perform strength testing directly on the work site, realizing fully automated control of the entire process of hammer lifting, fixed-height release, and automatic reset. It effectively eliminates the operational errors introduced by manual hammer lifting in terms of drop distance control and release posture, thereby ensuring the high consistency of penetration energy and the repeatability of test data. At the same time, this design facilitates rapid screening at multiple points on the same construction layer, thereby comprehensively evaluating the planar uniformity of the layer's strength and significantly avoiding the risk of misjudgment that may be caused by discrete data from a single point.

[0024] The automation level and site adaptability of the device have been optimized, and the control ensures the consistency of the drop hammer release height, eliminating penetration energy error from the power source. The mobile platform provides the device with the mobility to operate continuously across measuring points, effectively expanding the detection coverage of a single setup and reducing the labor intensity of manual handling and repeated leveling time during multi-point continuous testing. The combination of these two features makes the testing device more efficient in the quality control of large-area foamed lightweight soil construction. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0026] Figure 1 This is a schematic diagram of the portable testing device for the strength of the foamed lightweight soil fluidized solidification layer in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the other side of the portable testing device for the strength of the foamed lightweight soil fluidized solidification layer in an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the movable platform, base, and position adjustment mechanism in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the leveling component in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the automatic lifting mechanism in an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the probe structure in an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the clamping component in an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the notch and convex disk in an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the servo electric actuator in an embodiment of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Base; 2. Position adjustment mechanism; 200. Horizontal plate; 201. Driven gear; 202. Rack plate; 203. Drive component one; 204. Arc-shaped guide rail; 3. Vertical plate; 4. First fixed plate; 5. Second fixed plate; 6. Probe; 7. Probe; 8. Automatic lifting mechanism; 800. Guide rail; 801. Connecting rod; 802. Slider; 803. Clamping bar; 804. Spring telescopic component; 805. Conical opening; 806. Rack; 807. Drive gear; 808. Drive component two; 809. Servo electric actuator; 9. Measuring module; 10. Counterweight; 11. Drop hammer; 12. Notch; 13. Cam; 14. Movable platform; 15. Spirit level; 16. Leveling component; 17. Height adjustment component. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0038] As attached Figure 1 To be continued Figure 9 As shown:

[0039] Example 1:

[0040] The present invention provides a portable testing device for the strength of a foamed lightweight soil fluidized solidified layer, comprising a base 1, a position adjustment mechanism 2, a vertical plate 3, a first fixing plate 4, a second fixing plate 5, a measuring module 9, a counterweight 10, a drop hammer 11, and an automatic lifting mechanism 8.

[0041] The base 1 has a position adjustment mechanism 2 located on its side; a vertical plate 3 is mounted on the position adjustment mechanism 2, which is used to adjust the position of the vertical plate 3; a first fixing plate 4 and a second fixing plate 5 are both mounted on the side of the vertical plate 3, and a probe 6 is mounted between the first fixing plate 4 and the second fixing plate 5, with a probe 7 mounted at the bottom of the probe 6; a measuring module 9 is mounted on the side of the vertical plate 3, with the top of the probe 6 extending through the measuring module 9 for strength testing; a counterweight 10 is mounted in the middle of the probe 6, and a drop hammer 11 is mounted in the middle of the probe 6 for impacting the counterweight 10; and an automatic lifting mechanism 8 is mounted on the vertical plate 3 for lifting the drop hammer 11.

[0042] Specifically, the probe 6 has a graduated scale on its surface inside the measuring module 9, with units in millimeters. The measuring module 9 integrates a displacement sensor, a power supply battery, and a microcontroller, and has a display and control screen on its side. The displacement sensor is used to read the displacement of the probe 6 in real time. The battery provides power to the module. The microcontroller converts the measured displacement into the corresponding compressive strength value according to the preset compressive strength-impact amount calibration relationship. The compressive strength-impact amount calibration relationship has been pre-calibrated experimentally and stored in the memory of the measuring module 9.

[0043] Specifically, after selecting the testing point in the solidified area of ​​the foamed lightweight soil, the testing device is placed in position and the base 1 is adjusted to a horizontal state; the automatic lifting mechanism 8 is activated to raise the drop hammer 11. When the drop hammer 11 rises to contact the first fixed plate 4, the automatic lifting mechanism 8 releases the drop hammer 11, allowing it to impact the counterweight 10 on the probe rod 6 in a free-fall manner; under the impact, the probe rod 6 drives the probe 7 to move downward, causing the probe 7 to penetrate into the foamed lightweight soil at the testing point; the measuring module 9 then reads the penetration depth of the probe 7, and... Based on the pre-defined compressive strength-impact amount relationship, the impact amount is converted into the corresponding compressive strength value. After a single test is completed, the automatic lifting mechanism 8 raises the drop hammer 11 back to its original position. Then, the position of the probe 6 is adjusted by the position adjustment mechanism 2, and a second test is conducted at multiple points in the area. Based on the measured compressive strength value, it can be determined whether the foamed lightweight soil layer has reached the strength requirements for pouring the next layer of foamed lightweight soil. If the strength meets the requirements, the next layer is poured. If it does not meet the requirements, it is necessary to wait 1 to 3 hours and then retest.

[0044] Through this design, the device can directly complete the strength test on the work site, realizing the fully automated control of the entire process of lifting, releasing at a fixed height, and automatically resetting the drop hammer 11. This effectively eliminates the operational errors introduced by manual hammer lifting in terms of drop distance control and release posture, thereby ensuring the high consistency of penetration energy and the repeatability of test data. At the same time, this design facilitates rapid screening at multiple points on the same construction layer, thereby comprehensively evaluating the planar uniformity of the layer's strength and significantly avoiding the risk of misjudgment that may be caused by discrete data from a single point.

[0045] like Figure 3 As shown, the position adjustment mechanism 2 includes a horizontal plate 200, a driven gear 201, a rack plate 202, and a driving component 203;

[0046] The horizontal plate 200 is rotatably mounted on the top of the base 1; the driven gear 201 is mounted on the rotating shaft of the horizontal plate 200; the rack plate 202 is slidably mounted on the top of the base 1 and meshes with the driven gear 201; the driving component 203 is mounted on the top of the base 1 and is used to drive the rack plate 202 to move horizontally on the base 1; the vertical plate 3 is detachably mounted on the side of the horizontal plate 200.

[0047] like Figure 3 As shown, the position adjustment mechanism 2 also includes an arc-shaped guide rail 204; the arc-shaped guide rail 204 is disposed on the side of the base 1; the bottom of the horizontal plate 200 is movably connected to the arc-shaped guide rail 204 through a pivot.

[0048] Specifically, the drive component 203 is a servo electric actuator.

[0049] Specifically, the position adjustment mechanism 2 is used by driving component 203 to push rack plate 202 to move, thereby rack plate 202 drives driven gear 201 to rotate. Driven gear 201 rotates, causing horizontal plate 200 to rotate on arc guide rail 204, thereby completing the position adjustment of vertical plate 3. Through this design, the probe rod 6 can be assisted to carry out rapid screening at multiple points on the same construction layer.

[0050] like Figures 5 to 8 As shown, the automatic lifting mechanism 8 includes a pair of guide rails 800 and a drive assembly; the pair of guide rails 800 are symmetrically arranged on the side of the upright plate 3, and each guide rail 800 is provided with a clamping member; the side of the drop hammer 11 is provided with a pair of connecting rods 801, and the two clamping members can simultaneously clamp their respective corresponding connecting rods 801; the drive assembly is located at the top of the guide rails 800 and is used to drive the clamping members to move up and down along the guide rails 800; wherein, the drive assembly is configured to drive the clamping members to move up and down within the guide rails 800, and when the clamping members move down, they contact and clamp the corresponding connecting rods 801 to lift the drop hammer 11; when the clamping members move up to the top of the guide rails 800, they release the connecting rods 801, allowing the drop hammer 11 to fall freely.

[0051] Specifically, the automatic lifting mechanism 8 is used by driving the two clamping parts to slide downward along the corresponding guide rail 800 in a synchronous manner through the drive component. During the downward movement, the clamping parts contact and clamp the connecting rods 801 on both sides of the drop hammer 11. Subsequently, the drive component drives the clamping parts to lift upward synchronously, raising the drop hammer 11 to a predetermined height. When the clamping parts reach the top of the guide rail 800, the clamping mechanism automatically releases the connecting rods 801, and the drop hammer 11 falls in a free fall state.

[0052] like Figure 8 As shown, the first fixing plate 4 has a notch 12 inside, and the probe rod 6 has a convex plate 13 in the middle. When the drop hammer 11 moves upward, it can bring the convex plate 13 into the notch 12 to fix the position of the probe rod 6.

[0053] Specifically, during the upward lifting process, the drop hammer 11 will touch the convex plate 13 in the middle of the probe rod 6 and push the probe rod 6 to move upward together, so as to realize the automatic reset of the probe rod 6. When the convex plate 13 rises with the probe rod 6 into the notch 12 embedded in the first fixing plate 4, the position of the probe rod 6 is fixed. This design can ensure the consistency of the position of the probe rod 6 in multiple tests.

[0054] like Figure 7As shown, the clamping component includes a slider 802 and a pair of clamping bars 803; the slider 802 is slidably disposed within the guide rail 800; the pair of clamping bars 803 are both hinged to the side of the slider 802, and a spring telescopic component 804 is disposed between the two clamping bars 803; a tapered opening 805 is provided at the top of the guide rail 800, and the two clamping bars 803 can rotate when inserted into the tapered opening 805, thus releasing the clamping of the connecting rod 801.

[0055] Specifically, when the slider 802 moves downward, the bottom ends of the two clamping bars 803 contact and fit into the connecting rod 801. Under the elastic action of the spring telescopic member 804, the bottom clamping ends of the two clamping bars 803 move closer to each other, thereby clamping and fixing the connecting rod 801. When the slider 802 moves upward to the top of the guide rail 800, the top ends of the two clamping bars 803 enter the conical opening 805. Guided by the inner wall of the conical opening 805, the two clamping bars 803 rotate around their respective hinge points, and their bottom clamping ends open accordingly, thereby releasing the connecting rod 801 and completing the release of the drop hammer 11.

[0056] In this embodiment, as Figure 7 As shown, the drive assembly includes a rack 806 and a drive gear 807; the rack 806 is disposed on the top of the slider 802; the drive gear 807 is disposed on the top of the guide rail 800 via a bracket, the drive gear 807 meshes with the rack 806, and a second drive component 808 is disposed on the bracket for driving the drive gear 807 to rotate, the second drive component 808 being a servo motor.

[0057] Specifically, the drive component 808 drives the drive gear 807 to rotate, thereby moving the rack 806 and thus completing the movement of the slider 802.

[0058] In this embodiment, as Figure 9 As shown, the drive assembly includes a servo electric actuator 809, which is disposed on the side of the upright plate 3. The output end of the servo electric actuator 809 is connected to the top of the slider 802. The slider 802 is moved up and down by the servo electric actuator 809, thereby completing the clamping or releasing of the drop hammer 11.

[0059] like Figure 1 and Figure 2 As shown, a movable platform 14 is provided at the bottom of the base 1, four leveling components 16 are provided between the base 1 and the movable platform 14, and a spirit level 15 is provided at the top of the base 1.

[0060] Specifically, the horizontal position of the base 1 can be flexibly adjusted with the help of the movable platform 14 to adapt to the testing needs of large area and multiple measurement points.

[0061] Specifically, such as Figure 4As shown, the leveling component 16 includes a nut fixed to the top of the base 1. A threaded rod is connected to the nut by an internal thread. The bottom end of the threaded rod is provided with a ball shaft. The ball shaft is rotatably connected to the top of the movable platform 14. By rotating each leveling component 16 to change the height of the four corners of the base 1, and with the centering correction of the bubble level 15, the base 1 can be ensured to be in a horizontal state.

[0062] Specifically, such as Figure 3 As shown, a height adjustment component 17 is configured on the side end of the horizontal plate 200. The height adjustment component 17 can be implemented using a servo electric cylinder or a lead screw transmission structure. In this embodiment of the invention, a lead screw transmission structure is used as an example for explanation. Its specific structure is as follows: A U-shaped plate is fixedly provided on the side end of the horizontal plate 200. A lead screw is vertically installed inside the U-shaped plate, and sliding rods are arranged parallel to each other on both sides of the lead screw. A drive block is slidably sleeved between the two sliding rods and threadedly engaged with the lead screw. A servo motor is installed on the top of the U-shaped plate to drive the lead screw to rotate. The vertical plate 3 is detachably assembled to the side of the drive block, so that when the drive block moves up and down along the lead screw, it drives the vertical plate 3 and the components connected to it to rise and fall synchronously.

[0063] This design optimizes the automation level and site adaptability of the device, ensuring the consistency of the release height of the drop hammer 11 and eliminating penetration energy error from the power source. The mobile platform 14 provides the device with mobility for continuous operation across measuring points, effectively expanding the detection coverage of a single setup and reducing the labor intensity of manual handling and repeated leveling time during multi-point continuous testing. The combination of these two features makes the testing device more efficient in the quality control of large-area foamed lightweight soil construction.

[0064] In this embodiment, the control device can be a microcontroller as the control terminal. In this embodiment, the microcontroller is a typical embedded microcontroller unit, which consists of an arithmetic logic unit (ALU), a controller, memory, input / output devices, etc., and is equivalent to a miniature computer. Compared with the general-purpose microprocessors used in personal computers, it emphasizes self-sufficiency (no external hardware required) and cost savings. Its biggest advantage is its small size, which can be placed inside the instrument, but it has small storage capacity, simple input / output interfaces, and low power consumption.

[0065] Example 2:

[0066] A method for using a portable testing device for the strength of a foamed lightweight soil fluidized bed, applicable to a portable testing device for the strength of a foamed lightweight soil fluidized bed, includes the following steps:

[0067] Select the testing point in the solidified area of ​​the foamed lightweight soil, place the testing device in place, and adjust the base 1 to make it horizontal.

[0068] The drive component drives the corresponding clamping component to move downward, so that the clamping component clamps the connecting rods 801 on both sides of the drop hammer 11.

[0069] The drive assembly continues to drive the clamping parts to move upward. When the clamping parts approach the top of the guide rail 800, the two clamping parts simultaneously release their clamping on the connecting rod 801. The drop hammer 11 then falls freely and impacts the counterweight block 10. The resulting impact force is transmitted to the probe 7 through the probe rod 6, causing the probe 7 to penetrate into the foam lightweight soil.

[0070] The measuring module 9 reads the penetration amount of the probe 7 and converts the penetration amount into the corresponding compressive strength value according to the compressive strength-penetration amount relationship curve.

[0071] Subsequently, the position of the upright plate 3 is adjusted by the position adjustment mechanism 2, and the penetration and measurement steps are repeated to achieve multi-point automated detection of foamed lightweight soil.

[0072] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to mutually.

[0073] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, which will not be described in detail here.

[0074] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A portable apparatus for testing the strength of a flowable cured layer of foamed lightweight soil, characterized in that, include: Base (1); position adjustment mechanism (2), disposed on the side of the base (1); A vertical plate (3) is mounted on the position adjustment mechanism (2), which is used to adjust the position of the vertical plate (3); a first fixed plate (4) and a second fixed plate (5) are both mounted on the side of the vertical plate (3), and a probe (6) is mounted between the first fixed plate (4) and the second fixed plate (5), with a probe (7) mounted at the bottom of the probe (6); a measuring module (9) is mounted on the side of the vertical plate (3), and the top of the probe (6) extends through the measuring module (9) for testing strength; a counterweight (10) is mounted in the middle of the probe (6), and a drop hammer (11) is mounted in the middle of the probe (6) for impacting the counterweight (10); an automatic lifting mechanism (8) is mounted on the vertical plate (3) for lifting the drop hammer (11).

2. The portable testing device for the strength of a foamed lightweight soil fluidized solidification layer according to claim 1, characterized in that, The position adjustment mechanism (2) includes: A horizontal plate (200) is rotatably mounted on top of the base (1); Driven gear (201) is disposed on the shaft of the cross plate (200); A rack plate (202) is slidably disposed on the top of the base (1), and the rack plate (202) meshes with the driven gear (201); A drive component (203) is disposed on the top of the base (1) and is used to drive the rack plate (202) to move horizontally on the base (1); The vertical plate (3) is detachably installed on the side of the horizontal plate (200).

3. The portable testing device for the strength of a foamed lightweight soil fluidized solidification layer according to claim 2, characterized in that, The position adjustment mechanism (2) further includes: An arc-shaped guide rail (204) is provided on the side of the base (1); The bottom of the horizontal plate (200) is movably connected to the arc-shaped guide rail (204) via a pivot.

4. The portable testing device for the strength of a foamed lightweight soil fluidized solidification layer according to claim 1, characterized in that, The automatic lifting mechanism (8) includes: A pair of guide rails (800) are symmetrically arranged on the side of the vertical plate (3), and each guide rail (800) is provided with a clamping member. The drop hammer (11) is provided with a pair of connecting rods (801) on its side, and the two clamping members can clamp their respective connecting rods (801) at the same time. A drive assembly, disposed on top of the guide rail (800), is used to drive the clamping member to move up and down along the guide rail (800); The drive assembly is configured to drive the clamping member to move up and down within the guide rail (800). When the clamping member moves down, it contacts and clamps the corresponding connecting rod (801) to lift the drop hammer (11). When the clamping member moves to the top of the guide rail (800), it releases the connecting rod (801), allowing the drop hammer (11) to fall freely.

5. The portable testing device for the strength of a foamed lightweight soil fluidized solidification layer according to claim 4, characterized in that, The first fixing plate (4) has a notch (12) inside, and the probe rod (6) has a convex plate (13) in the middle. When the drop hammer (11) moves upward, it can bring the convex plate (13) into the notch (12) to complete the position fixation of the probe rod (6).

6. The portable testing device for the strength of a foamed lightweight soil fluidized solidification layer according to claim 4, characterized in that, The clamping element includes: The slider (802) is slidably disposed within the guide rail (800); A pair of clamping bars (803) are hinged to the side of the slider (802), and a spring telescopic member (804) is provided between the two clamping bars (803). The top of the guide rail (800) is provided with a tapered opening (805), and the two clamping bars (803) can rotate when inserted into the tapered opening (805) to release the clamping of the connecting rod (801).

7. The portable testing device for the strength of a foamed lightweight soil fluidized solidification layer according to claim 6, characterized in that, The driving component includes: A rack (806) is disposed on top of the slider (802); The drive gear (807) is mounted on the top of the guide rail (800) via a bracket. The drive gear (807) meshes with the rack (806), and a second drive component (808) is mounted on the bracket to drive the drive gear (807) to rotate.

8. A portable testing device for the strength of a foamed lightweight soil fluidized solidification layer according to claim 6, characterized in that, The driving component includes: A servo electric actuator (809) is disposed on the side of the vertical plate (3), and the output end of the servo electric actuator (809) is connected to the top of the slider (802).

9. A portable testing device for the strength of a foamed lightweight soil fluidized solidification layer according to claim 1, characterized in that, The base (1) has a movable platform (14) at its bottom, and four leveling components (16) are provided between the base (1) and the movable platform (14). The base (1) has a spirit level (15) at its top.

10. A method of using a portable testing device for the strength of a foamed lightweight soil fluidized solidified layer, applicable to the portable testing device for the strength of a foamed lightweight soil fluidized solidified layer as described in any one of claims 1-9, characterized in that... Includes the following steps: Select a test point in the solidified area of ​​the foamed lightweight soil, place the test device in place, and adjust the base (1) to make it horizontal. The drive component drives the corresponding clamping component to move downward, so that the clamping component clamps the connecting rods (801) on both sides of the drop hammer (11). The drive assembly continues to drive the clamping parts to move upward. When the clamping parts approach the top of the guide rail (800), the two clamping parts simultaneously release their clamping on the connecting rod (801). The drop hammer (11) then falls freely and impacts the counterweight (10). The resulting impact force is transmitted to the probe (7) through the probe rod (6), causing the probe (7) to penetrate into the foamed lightweight soil. The measuring module (9) reads the penetration amount of the probe (7) and converts the penetration amount into the corresponding compressive strength value according to the compressive strength-penetration amount relationship curve. Subsequently, the position of the upright plate (3) is adjusted by the position adjustment mechanism (2), and the penetration and measurement steps are repeated to achieve multi-point automated detection of foamed lightweight soil.

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