A smart sensing type static cone penetration test device with pause and thermal stimulation and a test method thereof

Abstract

The present application relates to the technical field of static sounding, in particular to a kind of intelligent sensing type static sounding penetration test device of stop heat force excitation and test method thereof, including support, drive assembly is arranged on support, drive assembly connects drive plate;Follow-up plate, follow-up plate is connected between drive plate by embracing component, and pressure sensor is arranged on follow-up plate;Elastic connecting component, the probe rod is detachably connected on elastic connecting component, when the penetration resistance of probe rod increases, elastic connecting component can trigger pressure sensor;Locking assembly, when embracing component acts to remove the connection state between follow-up plate and drive plate, locking assembly can lock follow-up plate on support;Rotary structure, connecting elastic connecting component and embracing component, when the connection state between follow-up plate and drive plate is removed, rotary structure cooperates with drive assembly, can drive elastic connecting component to drive probe rod to rotate, improve detection precision.

Description

Technical Field

[0001] This invention relates to the field of static penetration testing technology, specifically to an intelligent sensing-type static penetration testing device and method based on thermal excitation during penetration. Background Technology

[0002] Static cone penetration testing is a commonly used in-situ soil and rock testing method. It obtains continuous parameters such as cone tip resistance and sidewall friction by uniformly pressing the probe into the soil layer. However, when the probe encounters alternating layers of soft and hard soil, the penetration resistance increases sharply, which may even cause the probe to jam or the equipment to be damaged. In the existing technology, some static cone penetration testing devices are equipped with a spring and a pressure sensor at the rear end of the probe: the spring remains free during normal penetration; when the resistance exceeds the threshold, the spring is compressed and triggers the pressure sensor, which in turn drives the device to allow the probe to rotate to assist in breaking the soil and thus overcome the hard layer barrier.

[0003] However, during the process of the probe rotating to break through the hard layer, the spring is always in a compressed and energy-storing state. When the probe breaks through the hard layer and enters the relatively soft soil layer, the elastic potential energy stored in the spring will be released instantly, pushing the probe to produce an uncontrolled and sudden advance, resulting in a drastic change in penetration depth. This sudden change in depth not only breaks the uniform and stable penetration conditions required by the standard CPT, but also seriously interferes with the continuous measurement accuracy of the cone tip resistance and sidewall friction. Especially for intelligent sensing devices such as "stop-penetration thermal excitation" that require precise control of the stop-penetration position and fixed-point thermal response testing, the sudden change in depth will directly cause the thermal excitation position to shift, resulting in significant errors in subsequent data interpretation. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent sensing-type static penetration test device and method for static penetration testing with thermal excitation, so as to solve the problems mentioned in the background art.

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

[0006] A smart sensing static penetration test device with thermal excitation for static penetration testing includes a support frame, on which a drive assembly is mounted, and the drive assembly is connected to a drive plate that can move along the length of the support frame.

[0007] A follower plate is parallel to the drive plate, and the follower plate and the drive plate are connected by a clamping assembly. A pressure sensor is provided on the follower plate.

[0008] An elastic connection assembly is disposed on the follower plate, and a probe is detachably connected to the elastic connection assembly. When the penetration resistance of the probe increases, the elastic connection assembly can trigger the pressure sensor.

[0009] A locking assembly is connected to the clamping assembly. When the clamping assembly is activated to release the connection between the follower plate and the drive plate, the locking assembly can lock the follower plate onto the bracket.

[0010] The rotating structure connects the elastic connecting component and the clamping component. When the connection between the follower plate and the drive plate is released, the rotating structure cooperates with the drive component to drive the elastic connecting component to rotate the probe rod.

[0011] The intelligent sensing static penetration test device with thermal excitation as described above: the driving component includes a handwheel and a transmission wheel that are rotatably mounted on the bracket, and the shaft of the handwheel and the transmission wheel are connected by a first toothed belt;

[0012] The drive assembly further includes a first gear coaxially connected to the transmission wheel and a second gear rotating on the bracket, wherein the first gear meshes with the second gear.

[0013] The bracket is provided with a second toothed belt along its length to connect to the drive plate, and the second toothed belt is connected to the shaft of the second gear.

[0014] The intelligent sensing static penetrating test device with thermal excitation for stopping penetration as described above: the cohesion component includes a groove disposed on the follower plate, a sliding member is slidably disposed in the groove, and the sliding member is connected to a double-headed cylinder disposed on the follower plate;

[0015] The engagement assembly also includes a connecting frame connected to the sliding member, the connecting frame having a hook formed thereon, the hook abutting and fitting with the drive plate.

[0016] The intelligent sensing static penetration test device with thermal excitation as described above: the support is provided with multiple sets of guide rods, and the guide rods are slidably connected to the follower plate and the drive plate;

[0017] The locking assembly includes a guide on the follower plate, an extension is slidably mounted on the guide, and one end of the extension is provided with a clamping member adapted to the guide rod;

[0018] The locking assembly also includes a side plate connected to the extension member, the side plate having a drive groove that rolls with a cam shaft connected to the sliding member.

[0019] The intelligent sensing static penetration test device with thermal excitation as described above: the driving groove includes an inclined groove and a straight groove disposed on the side plate, and the inclined groove and the straight groove are connected.

[0020] The intelligent sensing static penetration test device with thermal excitation as described above: the elastic connection component includes a horizontal plate disposed on the follower plate, a first bevel gear rotatably mounted on the horizontal plate, a fastener coaxial with the first bevel gear is disposed inside the first bevel gear, and the fastener is detachably connected to the probe rod.

[0021] A cylindrical spring is also fitted onto the fastener, with one end of the spring connected to the horizontal plate and the other end connected to the lower end of the fastener.

[0022] The intelligent sensing static penetration test device with thermal excitation as described above: a limiting groove is provided on the outside of the fastener along its length direction, and a limiting block is provided on the inner wall of the first bevel gear, the limiting block slidingly engaging with the limiting groove.

[0023] The intelligent sensing static penetration test device with thermal excitation as described above: the rotating structure includes a second bevel gear rotatably mounted on the follower plate and a connecting frame rotatably connected to the shaft of the second bevel gear. A driven wheel is rotatably mounted on the connecting frame, and the driven wheel is connected to the shaft of the second bevel gear through a third toothed belt.

[0024] The second bevel gear meshes with the first bevel gear;

[0025] A traction rod is rotatably mounted on the connecting frame, and the traction rod is rotatably connected to the sliding member.

[0026] A test method for an intelligent sensing static penetrating test device with thermal excitation as described above includes the following steps:

[0027] Step 1: Place the support in the center of the area to be tested, and fix the support to the soil;

[0028] Step 2: Clamp the probe onto the elastic connection assembly and drive the drive assembly to move;

[0029] Step 3: The drive assembly drives the drive plate toward the soil, causing the probe to insert into the soil;

[0030] Step 4: When the probe encounters a layer of alternating soft and hard soil, the resistance to the probe's downward movement increases. At this time, the probe will compress the elastic connection component, and when the probe is subjected to a certain force, the pressure sensor is triggered.

[0031] Step 5: When the pressure sensor is triggered, the clamping component moves, first locking the follower plate onto the bracket, then separating the follower plate from the drive plate. After the follower plate separates from the drive plate, the rotating structure will cooperate with the drive component, so that when the drive component continues to move, the rotating structure can drive the probe to rotate to break through the alternating soft and hard layers.

[0032] Compared with the prior art, the beneficial effects of the present invention are:

[0033] By incorporating a follower plate, drive plate, clamping assembly, locking assembly, and elastic connecting assembly, abrupt changes in probe depth are effectively prevented. When the lower end of the probe moves to the alternating soft and hard soil layer, the downward force on the probe increases. When the force on the probe reaches a preset value, the pressure sensor is triggered. At this time, the double-headed cylinder actuates, causing the hook and drive plate to misalign, thus unlocking the follower plate from the drive plate. Simultaneously, the locking assembly locks the follower plate onto the bracket. In this state, the downward pressure of the probe during rotation is entirely provided by the elastic connecting assembly, ensuring that the probe has sufficient downward pressure to break through the alternating soft and hard soil layer while preventing excessive downward pressure that would cause the probe to accelerate into the soil after breaking through the alternating soft and hard soil layer, resulting in abrupt changes in detection depth and improving detection accuracy.

[0034] Furthermore, the probe releases a certain amount of elastic potential energy when it breaks through the alternating layers of soft and hard soil, ensuring that the probe will not undergo a deep change within the soil during the subsequent release of elastic potential energy. This guarantees the accuracy of the test and, consequently, ensures accurate depth positioning and continuous and reliable data for the thermal excitation test. Attached Figure Description

[0035] Figure 1 A schematic diagram of the structure of an intelligent sensing-type static penetration test device for stopping thermal excitation.

[0036] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle.

[0037] Figure 3 This is a schematic diagram of the intelligent sensing static penetration test device for stopping thermal excitation from another angle.

[0038] Figure 4 for Figure 3 Enlarged view of the structure at point B.

[0039] Figure 5 A schematic diagram of the drive component in an intelligent sensing-type static penetration test device for stopping thermal excitation.

[0040] Figure 6 This is a schematic diagram of the cohesive assembly, elastic connection assembly, locking assembly, and rotating structure in an intelligent sensing-type static penetration test device for stopping thermal excitation.

[0041] Figure 7 A schematic diagram of the follower plate and drive plate in an intelligent sensing-type static penetration test device for stopping thermal excitation.

[0042] Figure 8 A cross-sectional view of the elastic connection component in an intelligent sensing-type static penetration test device for stopping thermal excitation.

[0043] Figure 9 Exploded view of the cohesive and locking components in an intelligent sensing static penetration test device for stopping thermal excitation.

[0044] Figure 10 A schematic diagram of the rotating structure in an intelligent sensing-type static penetration test device for stopping thermal excitation.

[0045] In the diagram: 1. Bracket; 2. Handwheel; 3. First toothed belt; 4. Transmission wheel; 5. First gear; 6. Second gear; 7. Second toothed belt; 8. Guide rod; 9. Drive plate; 10. Follower plate; 1001. Slide groove; 11. Double-headed cylinder; 12. Sliding component; 1201. Cam shaft; 13. Connecting frame; 1301. Hook; 14. Guide component; 15. Extension component; 16. Clamping component; 17. Side plate; 1701. Inclined groove; 1702. Straight groove; 18. Horizontal plate; 19. First bevel gear; 20. Fastener; 21. Cylindrical spring; 22. Second bevel gear; 23. Driven wheel; 24. Third toothed belt; 25. Pull rod; 26. Connecting frame; 27. Pressure sensor. Detailed Implementation

[0046] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0047] Please see Figures 1-10 As an embodiment of the present invention, the intelligent sensing static penetration test device with thermal excitation includes a support 1, a follower plate 10, an elastic connection assembly, a locking assembly, and a rotating structure.

[0048] The bracket 1 is provided with a drive assembly, which is connected to a drive plate 9 that can move along the length of the bracket 1. The drive assembly includes a handwheel 2 and a transmission wheel 4 that are rotatably mounted on the bracket 1. The shaft of the handwheel 2 and the transmission wheel 4 are connected by a first toothed belt 3.

[0049] The drive assembly also includes a first gear 5 coaxially connected to the transmission wheel 4 and a second gear 6 rotating on the bracket 1, wherein the first gear 5 meshes with the second gear 6.

[0050] The bracket 1 is provided with a second toothed belt 7 along its length direction, which connects to the drive plate 9. The second toothed belt 7 is connected to the shaft of the second gear 6.

[0051] In this embodiment, the drive plate 9 is connected to one side of the second toothed belt 7, so that when the second toothed belt 7 rotates, the drive plate 9 can move along the length direction of the bracket 1, thereby driving the probe rod to move toward the soil.

[0052] Furthermore, during the process of driving the handwheel 2 to rotate, the first toothed belt 3 can drive the transmission wheel 4 connected to it to rotate. During this process, the transmission ratio of the first toothed belt 3 is less than 1. When the transmission wheel 4 rotates, the first gear 5 connected to it will also rotate. The second gear 6 is in a meshing state with the first gear 5, so that the second gear 6 can rotate. The number of teeth of the first gear 5 is less than the number of teeth of the second gear 6, so that the transmission ratio between the two is also less than 1. That is, through the above two transmission structures with a transmission ratio of less than 1, the drive plate 9 can obtain a greater downward force during the process of driving the handwheel 2 to rotate, thereby driving the probe rod to move towards the soil with a certain force.

[0053] Based on the above settings, under the action of the two sets of deceleration transmission structures, when the handwheel 2 rotates with a predetermined force, the drive plate 9 can obtain a greater downward force, thereby assisting the probe rod to overcome the friction between the soil and the inner wall, and enabling the probe rod to penetrate into the soil better.

[0054] It should be noted that a heating resistor is installed inside the lower end of the probe, and the probe performs intermittent penetration during the penetration process. The specific process is as follows: penetration (reaching the predetermined depth) → stop penetration (stop penetration) → perform thermal excitation test (heating and cooling) → data analysis → continue penetration to the next depth.

[0055] Please see Figures 6-7 , Figure 9 The follower plate 10 is parallel to the drive plate 9, and the follower plate 10 and the drive plate 9 are connected by a clamping assembly. A pressure sensor 27 is provided on the follower plate 10.

[0056] The clamping assembly includes a slide groove 1001 disposed on the follower plate 10, and a sliding member 12 is slidably disposed in the slide groove 1001. The sliding member 12 is connected to a double-headed cylinder 11 disposed on the follower plate 10.

[0057] The clamping assembly also includes a connecting frame 13 connected to the sliding member 12, and a hook 1301 is formed on the connecting frame 13, which abuts and is adapted to the drive plate 9.

[0058] In the initial state, the two sets of connecting frames 13 on both sides of the follower plate 10 are close to each other, which makes the hooks 1301 at the bottom of the connecting frames 13 abut against the lower surface of the drive plate 9. In this state, when the drive plate 9 moves downward, it can drive the follower plate 10 to move downward through the hooks 1301, thereby driving the probe to penetrate into the soil.

[0059] When the lower end of the probe moves to the alternating soft and hard layer in the soil, the downward force on the probe increases. When the force on the probe reaches the preset value, the pressure sensor 27 is triggered. At this time, the double-headed cylinder 11 will actuate and drive the sliding member 12 to move along the length of the slide groove 1001, so that the hook 1301 can be misaligned with the drive plate 9, thereby unlocking the follower plate 10 and the drive plate 9. In this way, under the action of the locking component and the rotating structure, the drive component can continue to drive the probe to rotate downward, so as to assist the probe in breaking through the alternating soft and hard layer in the soil. This avoids the drive plate 9 continuously driving the follower plate 10 to move during the operation of the drive component, which would cause the downward pressure on the probe to exceed its maximum pressure, thus ensuring the integrity of the probe structure.

[0060] Please see Figure 6 , Figure 9 The locking component is connected to the clamping component. When the clamping component is activated to release the connection between the follower plate 10 and the drive plate 9, the locking component can lock the follower plate 10 onto the bracket 1.

[0061] The bracket 1 is provided with multiple sets of guide rods 8, and the guide rods 8 are slidably connected to the follower plate 10 and the drive plate 9;

[0062] The locking assembly includes a guide 14 disposed on the follower plate 10, an extension 15 slidably mounted on the guide 14, and a clamping member 16 adapted to the guide rod 8 at one end of the extension 15.

[0063] The locking assembly also includes a side plate 17 connected to the extension 15. The side plate 17 is provided with a drive groove, which is in rolling engagement with the convex shaft 1201 connected to the sliding member 12. The drive groove includes an inclined groove 1701 and a straight groove 1702 provided on the side plate 17. The inclined groove 1701 and the straight groove 1702 are in communication.

[0064] When the probe moves to the alternating soft and hard soil layer, the pressure sensor 27 will drive the double-headed cylinder 11 to move, causing the sliding member 12 to move along the length of the chute 1001. During this process, when the hook 1301 has not yet separated from the drive plate 9, the convex shaft 1201 will follow the sliding member 12 and move in the inclined groove 1701. This allows the extension member 15 to move toward the guide rod 8. After the extension member 15 moves to the predetermined displacement, the clamping member 16 will abut against the guide rod 8. At this time, the clamping member 16 and the guide rod 8 form a locking state. As the sliding member 12 continues to move, the hook 1301 will separate from the drive plate 9, allowing the drive plate 9 to separate from the follower plate 10. In this state, the drive assembly can drive the drive plate 9 to move without driving the follower plate 10 to move. Thus, when the drive plate 9 moves and drives the probe to rotate through the rotating structure, the follower plate 10 will not continue to apply pressure toward the probe, further ensuring the structural integrity of the probe.

[0065] Furthermore, since the follower plate 10 is in a locked state, the downward pressure of the probe during rotation is entirely provided by the elastic connection component. This ensures that the probe has a certain downward pressure during rotation to break through the alternating soft and hard soil layers, while avoiding excessive downward pressure that would cause the probe to accelerate its penetration into the soil after breaking through the alternating soft and hard soil layers, resulting in a sudden change in detection depth and improving detection accuracy.

[0066] Please see Figure 6 , Figure 8 The elastic connection assembly is disposed on the follower plate 10, and a probe is detachably connected to the elastic connection assembly. When the penetration resistance of the probe increases, the elastic connection assembly can trigger the pressure sensor 27.

[0067] The elastic connection assembly includes a horizontal plate 18 disposed on the follower plate 10, a first bevel gear 19 rotatably mounted on the horizontal plate 18, a fastener 20 coaxial with the first bevel gear 19, and the fastener 20 being detachably connected to the probe rod.

[0068] A cylindrical spring 21 is also fitted onto the fastener 20. One end of the cylindrical spring 21 is connected to the horizontal plate 18, and the other end is connected to the lower end of the fastener 20.

[0069] The fastener 20 has a limiting groove on its outer side along its length, and the first bevel gear 19 has a limiting block on its inner wall, with the limiting block slidingly engaging with the limiting groove.

[0070] In this embodiment, the top of the probe is connected to the fastener 20 by a thread. When the follower plate 10 moves downward with the drive plate 9 and the probe moves to the alternating soft and hard layer in the soil, the resistance to the downward movement of the probe will increase. At this time, the probe will transfer this resistance to the fastener 20, so that when the follower plate 10 moves downward, the fastener 20 will move upward, thereby compressing the column spring 21. When the force on the probe reaches the preset value, the upward movement of the fastener 20 just triggers the pressure sensor 27. At this time, the double-headed cylinder 11 is activated, locking the follower plate 10 on the bracket 1 and separating the drive plate 9 from the follower plate 10. When the drive assembly drives the probe to rotate through the rotating structure, the downward pressure of the probe is entirely provided by the column spring 21. This means that when the probe breaks through the alternating soft and hard layer in the soil, the column spring 21 has actually released a certain amount of elastic potential energy, so that in the subsequent release of elastic potential energy, the probe will not undergo a deep change in the soil, thus ensuring detection accuracy.

[0071] Please see Figure 4 , Figure 6 , Figure 10 The rotating structure connects the elastic connecting component and the clamping component. When the connection between the follower plate 10 and the drive plate 9 is released, the rotating structure cooperates with the drive component to drive the elastic connecting component to rotate the probe.

[0072] The rotating structure includes a second bevel gear 22 rotatably mounted on the follower plate 10 and a connecting frame 26 rotatably connected to the shaft of the second bevel gear 22. A driven wheel 23 is rotatably mounted on the connecting frame 26, and the driven wheel 23 is connected to the shaft of the second bevel gear 22 through a third toothed belt 24.

[0073] The second bevel gear 22 meshes with the first bevel gear 19;

[0074] A pull rod 25 is rotatably mounted on the connecting frame 26, and the pull rod 25 is rotatably connected to the sliding member 12.

[0075] In this embodiment, in the initial state, the driven wheel 23 is separated from the second toothed belt 7. That is, when the probe is normally inserted, the driven wheel 23 will not drive the probe to rotate through the third toothed belt 24, the second bevel gear 22, and the first bevel gear 19 to perform the standard process insertion action.

[0076] When the probe moves to the alternating soft and hard soil layer, when the follower plate 10 is locked on the support 1 and the follower plate 10 is separated from the drive plate 9, the sliding member 12 will drive the connecting frame 26 to rotate through the pull rod 25 and make the driven wheel 23 perform a circular motion until the driven wheel 23 presses on the second toothed belt 7. At this time, when the second toothed belt 7 moves, it can drive the probe to rotate and rotate with a certain downward pressure under the elastic force provided by the column spring 21, thereby assisting the probe to break through the alternating soft and hard soil layer.

[0077] It should be noted that the rotation of the probe is only to assist it in breaking through the alternating layers of soft and hard soil; the probe will not rotate during penetration testing.

[0078] It should also be noted that the rotation of the probe relies on the reciprocating motion of the second toothed belt 7 so that when the probe breaks through, the drive plate 9 can be reset to the predetermined position at the lower part of the follower plate 10, and when the connecting frame 13 moves in the opposite direction, the claw 1301 can re-abut against the lower surface of the drive plate 9, thereby continuing the penetration test.

[0079] As an embodiment of the present invention, a test method for an intelligent sensing static penetrating test device with thermal excitation as described above is also proposed, comprising the following steps:

[0080] Step 1: Place the support 1 in the center of the area to be tested, and fix the support 1 to the soil;

[0081] Step 2: Clamp the probe onto the elastic connection assembly and drive the drive assembly to move;

[0082] Step 3: The drive assembly drives the drive plate 9 toward the soil, causing the probe to insert into the soil;

[0083] Step 4: When the probe encounters a layer of alternating soft and hard soil, the resistance to the probe's downward movement increases. At this time, the probe will compress the elastic connection component, and when the probe is subjected to a certain force, the pressure sensor 27 is triggered.

[0084] Step 5: When the pressure sensor 27 is triggered, the clamping component operates, first locking the follower plate 10 onto the bracket 1, then separating the follower plate 10 from the drive plate 9. After the follower plate 10 separates from the drive plate 9, the rotating structure will cooperate with the drive component, so that when the drive component continues to operate, the rotating structure can drive the probe to rotate, thereby breaking through the alternating soft and hard layers.

[0085] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0086] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A smart sensing static penetration test device for thermal excitation of static penetration test, comprising a support, wherein a drive assembly is provided on the support, and the drive assembly is connected to a drive plate capable of moving along the length of the support; Its features are, Also includes: A follower plate is parallel to the drive plate, and the follower plate and the drive plate are connected by a clamping assembly. A pressure sensor is provided on the follower plate. An elastic connection assembly is disposed on the follower plate, and a probe is detachably connected to the elastic connection assembly. When the penetration resistance of the probe increases, the elastic connection assembly can trigger the pressure sensor. A locking assembly is connected to the clamping assembly. When the clamping assembly is activated to release the connection between the follower plate and the drive plate, the locking assembly can lock the follower plate onto the bracket. The rotating structure connects the elastic connecting component and the clamping component. When the connection between the follower plate and the drive plate is released, the rotating structure cooperates with the drive component to drive the elastic connecting component to rotate the probe rod.

2. The intelligent sensing-type static penetration test device with thermal excitation for stopping penetration as described in claim 1, characterized in that, The drive assembly includes a handwheel and a transmission wheel that are rotatably mounted on the bracket, and the shaft of the handwheel and the transmission wheel are connected by a first toothed belt. The drive assembly further includes a first gear coaxially connected to the transmission wheel and a second gear rotating on the bracket, wherein the first gear meshes with the second gear. The bracket is provided with a second toothed belt along its length to connect to the drive plate, and the second toothed belt is connected to the shaft of the second gear.

3. The intelligent sensing-type static penetration test device with thermal excitation for stopping penetration as described in claim 1, characterized in that, The engagement assembly includes a slide groove disposed on the follower plate, a sliding member is slidably disposed in the slide groove, and the sliding member is connected to a double-headed cylinder disposed on the follower plate. The engagement assembly also includes a connecting frame connected to the sliding member, the connecting frame having a hook formed thereon, the hook abutting and fitting with the drive plate.

4. The intelligent sensing-type static penetration test device with thermal excitation for stopping penetration as described in claim 3, characterized in that, The bracket is provided with multiple sets of guide rods, and the guide rods are slidably connected to the follower plate and the drive plate; The locking assembly includes a guide on the follower plate, an extension is slidably mounted on the guide, and one end of the extension is provided with a clamping member adapted to the guide rod; The locking assembly also includes a side plate connected to the extension member, the side plate having a drive groove that rolls with a cam shaft connected to the sliding member.

5. The intelligent sensing-type static penetration test device with thermal excitation for stopping penetration as described in claim 4, characterized in that, The drive groove includes an inclined groove and a straight groove disposed on the side plate, and the inclined groove and the straight groove are connected.

6. The intelligent sensing-type static penetration test device with thermal excitation for stopping penetration as described in claim 3, characterized in that, The elastic connection assembly includes a horizontal plate disposed on the follower plate, a first bevel gear rotatably mounted on the horizontal plate, a fastener coaxial with the first bevel gear is disposed inside the first bevel gear, and the fastener is detachably connected to the probe rod. A cylindrical spring is also fitted onto the fastener, with one end of the spring connected to the horizontal plate and the other end connected to the lower end of the fastener.

7. The intelligent sensing-type static penetration test device with thermal excitation for stopping penetration as described in claim 6, characterized in that, The fastener has a limiting groove on its outer side along its length, and a limiting block is provided on the inner wall of the first bevel gear. The limiting block slides in conjunction with the limiting groove.

8. The intelligent sensing-type static penetration test device with thermal excitation for stopping penetration as described in claim 6, characterized in that, The rotating structure includes a second bevel gear rotatably mounted on the follower plate and a connecting frame rotatably connected to the shaft of the second bevel gear. A driven wheel is rotatably mounted on the connecting frame, and the driven wheel is connected to the shaft of the second bevel gear via a third toothed belt. The second bevel gear meshes with the first bevel gear; A traction rod is rotatably mounted on the connecting frame, and the traction rod is rotatably connected to the sliding member.

9. A test method for an intelligent sensing-type static penetration test device with thermal excitation as described in claim 1, characterized in that, Includes the following steps: Step 1: Place the support in the center of the area to be tested, and fix the support to the soil; Step 2: Clamp the probe onto the elastic connection assembly and drive the drive assembly to move; Step 3: The drive assembly drives the drive plate toward the soil, causing the probe to insert into the soil; Step 4: When the probe encounters a layer of alternating soft and hard soil, the resistance to the probe's downward movement increases. At this time, the probe will compress the elastic connection component, and when the probe is subjected to a certain force, the pressure sensor is triggered. Step 5: When the pressure sensor is triggered, the clamping component moves, first locking the follower plate onto the bracket, then separating the follower plate from the drive plate. After the follower plate separates from the drive plate, the rotating structure will cooperate with the drive component, so that when the drive component continues to move, the rotating structure can drive the probe to rotate to break through the alternating soft and hard layers.

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