An in-situ testing device for geotechnical engineering investigation

Abstract

The present application relates to in-situ testing device technical field, specifically for a kind of in-situ testing device for geotechnical engineering investigation, comprising: support mechanism, guide mechanism, pound mechanism, driving mechanism, lifting mechanism, by rotating driving mechanism to drive pound mechanism, make pound block form pound to bearing plate, drive guide mechanism to test rock-soil layer impact, make feeler rod penetrate into test rock-soil layer, carry out standard penetration test;After test is completed, reverse rotation driving mechanism drives lifting mechanism, makes lifting gear climb up along lifting tooth plate, drives guide mechanism to move upwards, feeler rod is extracted from test rock-soil layer;Beneficial effect is: realize the cyclic pound in sample process, improve the efficiency of test, and ensure that the height of pound block each time falling is consistent, and the release speed of pound block each time falling is consistent, solve the problem that multiple pound needs to push pound block multiple times to release, so that the test efficiency is lower.

Description

Technical Field

[0001] This invention relates to the field of in-situ testing equipment technology, specifically to an in-situ testing device for geotechnical engineering investigation. Background Technology

[0002] In-situ testing is the testing of the properties of soil and rock at their original location or essentially in-situ under stress conditions. Commonly used in-situ testing methods include: load test, static cone penetration test, pressuremeter test, vane shear test, standard penetration test, wave velocity test and other field tests. Among them, the standard penetration test is conducted using a standard penetrator.

[0003] There is a lightweight standard penetration tester. When using it, the scale is marked on the penetrometer rod according to the field test requirements. Then, the penetrometer is aligned with the test position, the penetrometer rod is made vertical, the impact block is pushed up to a certain height and then released, so that the impact block falls freely and hits the fixing ring on the penetrometer rod, thereby driving the penetrometer into the soil and rock layer at the test position. By controlling the impact block to hit the fixing ring multiple times, the penetrometer is driven into the soil and rock layer to a specified depth.

[0004] However, multiple impacts require repeatedly pushing and releasing the impact block, which reduces the efficiency of the test. In addition, manually pushing the impact block up makes it impossible to guarantee that the height is consistent each time, and the release speed of the impact block cannot be guaranteed to be consistent, which introduces certain errors into the test data. Summary of the Invention

[0005] The purpose of this invention is to provide an in-situ testing device for geotechnical engineering investigation, in order to solve the problem mentioned in the background art that multiple impacts require pushing and releasing the impact block multiple times, resulting in low testing efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an in-situ testing device for geotechnical engineering investigation, comprising:

[0007] The guide mechanism is installed inside the support mechanism. The support mechanism includes a support side plate and a lifting groove opened on the surface of the support side plate. The guide mechanism includes a lifting guide frame and a mounting frame. A drive mechanism is installed in the guide mechanism at the position corresponding to the mounting frame. A probe rod is installed at the bottom of the lifting guide frame through a probe rod connecting seat. A hammer plate is fixedly installed inside the lifting guide frame. Rotary shaft holes are opened on both sides of the lifting guide frame. A hammering mechanism is installed inside the lifting guide frame at the position corresponding to the rotating shaft holes.

[0008] The striking mechanism includes a rotating wheel and a striking block. The interior of the rotating wheel is fixedly connected to the central ring of the rotating wheel via a rotating wheel connecting rod. The striking block is slidably sleeved on the surface of the rotating wheel connecting rod. The inner wall of the striking block is provided with a striking block positioning groove. A rotating shaft is fixedly installed inside the central ring of the rotating wheel, and the two ends of the rotating shaft are rotatably installed inside the rotating shaft hole.

[0009] The drive mechanism includes a driving synchronous pulley and a driven synchronous pulley, as well as a synchronous belt sleeved on the surfaces of the driving synchronous pulley and the driven synchronous pulley. A drive shaft is fixedly inserted inside the driving synchronous pulley, and the drive shaft is rotatably connected to the mounting bracket. A lifting mechanism is installed on the side of the drive mechanism corresponding to the position of the driven synchronous pulley. The lifting mechanism includes a lifting gear set on one side of the driven synchronous pulley, a linkage ring installed on the inner side of the driven synchronous pulley, and a lifting tooth plate fixedly installed on the inner side of the support side plate.

[0010] The impact mechanism is driven by a rotating drive mechanism, which causes the impact block to strike the impact plate, thereby driving the guide mechanism to impact the test soil layer and allowing the penetrometer to penetrate into the test soil layer for a standard penetration test. After the test is completed, the reverse rotation drive mechanism drives the lifting mechanism, causing the lifting gear to climb up along the lifting tooth plate, which in turn drives the guide mechanism to move upward and pull the penetrometer out of the test soil layer.

[0011] Preferably, the supporting side plate is arranged in an inverted "U" shape, the lifting groove runs through both sides of the supporting side plate, a supporting base is fixedly installed at the bottom of the supporting side plate, the outer side of the supporting side plate is fixedly connected to the supporting base through the side plate reinforcing ribs, and multiple sets of supporting legs are fixedly installed at the bottom of the supporting base.

[0012] Preferably, guide columns are fixedly installed on both sides of the lifting guide frame, the guide columns are slidably disposed inside the lifting groove, an upper rotating wheel groove is provided on the top of the inner side of the lifting guide frame, an upper guide slope and a vertical positioning groove are provided on the inner wall of the upper rotating wheel groove, a lower rotating wheel groove is provided on the bottom of the inner side of the lifting guide frame, an upper guide slope is provided on the inner wall of the lower rotating wheel groove, and a mounting bracket is fixedly installed on one side of the lifting guide frame.

[0013] Preferably, the rotating wheel connecting rod is provided in multiple sets, which are arranged in a circumferential array inside the rotating wheel. A support plate is fixedly installed at one end of the rotating wheel connecting rod near the rotating wheel. A telescopic hole is opened inside the rotating wheel connecting rod. A trigger hole is opened at the end of the telescopic hole away from the central ring of the rotating wheel. The trigger hole penetrates the surface of the rotating wheel. A telescopic rod is slidably inserted into the telescopic hole. A connecting rod side groove and a positioning bead groove are opened on the side of the rotating wheel connecting rod. Both the connecting rod side groove and the positioning bead groove are connected to the telescopic hole. The two ends of the positioning bead groove are constricted. Two sets of positioning beads are rolled inside the positioning bead groove. A central rod is provided between the two sets of positioning beads.

[0014] Preferably, the surface of the telescopic rod is provided with a telescopic rod clearance groove, and a telescopic rod side block is fixedly installed on the surface of the telescopic rod. The telescopic rod side block slides through the connecting rod side groove. A return spring is provided between the end of the telescopic rod near the center ring of the rotating wheel and the inner wall of the telescopic hole. A trigger rod is fixedly connected to the end of the telescopic rod away from the center ring of the rotating wheel. The trigger rod is slidably inserted into the inside of the trigger hole. A roller is rotatably installed at the end of the trigger rod away from the telescopic rod.

[0015] Preferably, the central ring of the rotating wheel is rotatably installed inside the rotating shaft hole via a rotating shaft. The two ends of the rotating shaft are fixedly installed with mounting shafts, which are slidably inserted into the interior of the lifting groove. A one-way bearing is fixedly installed on the surface of the mounting shaft. The one-way bearing is located between the support side plate and the lifting guide frame. A bushing is fixedly installed on the surface of the one-way bearing. Multiple sets of linkage ring guide grooves are opened on the surface of the bushing. The linkage ring guide grooves are inclined with one end close to the lifting guide frame and the other end close to the support side plate.

[0016] Preferably, the inner wall of the driven synchronous pulley has multiple sets of linkage ring connecting grooves, and the inner wall of the driven synchronous pulley is slidably disposed with the linkage ring. Multiple sets of linkage ring connecting posts are fixedly installed on the surface of the linkage ring, and the linkage ring connecting posts are slidably disposed inside the linkage ring connecting groove. Multiple sets of linkage ring guide posts are fixedly installed on the inner wall of the linkage ring, and the linkage ring is slidably sleeved on the surface of the bushing. The linkage ring guide posts are slidably inserted into the interior of the linkage ring guide groove. Multiple sets of linkage blocks are fixedly disposed on one side of the linkage ring.

[0017] Preferably, a drive disc is fixedly mounted at the end of the drive shaft.

[0018] Preferably, the lifting gear is rotatably mounted on the surface of the bushing, and multiple sets of linkage grooves are provided on the side of the lifting gear near the linkage ring. The position of the linkage groove corresponds to the position of the linkage block, and the linkage groove meshes with the lifting gear plate.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. By setting up a striking mechanism, cyclic striking is achieved during the sample preparation process, eliminating the need to push the striking block up multiple times, thus improving the efficiency of the test. It also ensures that the height and release speed of the striking block are consistent each time it falls, solving the problem of low test efficiency caused by having to push and release the striking block multiple times for multiple strikes.

[0021] 2. By setting up a lifting mechanism, during the test, the driving mechanism drives the lifting mechanism to raise the guide mechanism, which facilitates the installation of the penetrometer rod. At the end of the test, the driving mechanism drives the lifting mechanism to raise the guide mechanism, which facilitates the extraction of the penetrometer rod from the soil layer, further improving the efficiency of the test. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an in-situ testing device for geotechnical engineering investigation according to the present invention.

[0023] Figure 2 This is a schematic cross-sectional view of the present invention;

[0024] Figure 3 For the present invention Figure 2Enlarged structural diagram at point A in the middle;

[0025] Figure 4 For the present invention Figure 2 Enlarged structural diagram at point B;

[0026] Figure 5 This is an exploded view of the lifting mechanism of the present invention;

[0027] Figure 6 This is a schematic diagram of an explosion at the impact mechanism of the present invention;

[0028] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point C;

[0029] Figure 8 This is a schematic diagram of the guiding mechanism structure of the present invention;

[0030] Figure 9 This is a schematic diagram of the support mechanism structure of the present invention;

[0031] Figure 10 This is a schematic diagram of the rotary wheel structure of the present invention;

[0032] Figure 11 For the present invention Figure 10 Enlarged structural diagram at point D;

[0033] Figure 12 This is a schematic diagram of the telescopic rod structure of the present invention;

[0034] Figure 13 This is a schematic diagram of the driven synchronous pulley structure of the present invention;

[0035] Figure 14 This is a schematic diagram of the linkage ring structure of the present invention;

[0036] Figure 15 This is a schematic diagram of the lifting gear structure of the present invention;

[0037] Figure 16 This is a schematic diagram of the bushing structure of the present invention.

[0038] In the picture:

[0039] Support mechanism 1, support side plate 11, lifting groove 12, side plate reinforcing rib 13, support base frame 14, support leg 15;

[0040] Guide mechanism 2, lifting guide frame 21, guide column 22, rotating shaft hole 23, impact plate 24, upper rotating wheel groove 25, upper guide slope 251, vertical positioning groove 252, lower rotating wheel groove 26, lower guide slope 261, mounting frame 27, probe rod connecting seat 28, probe rod 29;

[0041] The impact mechanism 3, the rotating wheel 31, the rotating wheel connecting rod 32, the telescopic hole 321, the trigger hole 322, the connecting rod side groove 323, the positioning bead groove 324, the support plate 33, the rotating wheel center ring 34, the rotating shaft 341, the mounting shaft 342, the impact block 35, the impact block positioning groove 351, the telescopic rod 36, the telescopic rod clearance groove 361, the telescopic rod side block 362, the return spring 363, the trigger rod 364, the roller 365, the positioning bead 37, and the center rod 38;

[0042] Drive mechanism 4, drive shaft 41, drive disc 42, driving synchronous pulley 43, synchronous belt 44, driven synchronous pulley 45, linkage ring connecting groove 451, one-way bearing 46;

[0043] Lifting mechanism 5, lifting gear 51, linkage groove 511, bushing 52, linkage ring guide groove 521, linkage ring 53, linkage ring connecting column 531, linkage ring guide column 532, linkage block 533, lifting gear plate 54. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit 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.

[0045] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] Please see Figures 1-16 This invention provides an in-situ testing device for geotechnical engineering investigation, comprising:

[0047] The guide mechanism 2 is installed inside the support mechanism 1. The support mechanism 1 includes a support side plate 11 and a lifting groove 12 formed on the surface of the support side plate 11. The guide mechanism 2 includes a lifting guide frame 21 and a mounting frame 27. A drive mechanism 4 is installed on the guide mechanism 2 at the position corresponding to the mounting frame 27. A probe rod 29 is installed at the bottom of the lifting guide frame 21 through a probe rod connecting seat 28. A strike plate 24 is fixedly installed inside the lifting guide frame 21. Rotary shaft holes 23 are formed on both sides of the lifting guide frame 21. A striking mechanism 3 is installed inside the lifting guide frame 21 at the position corresponding to the rotating shaft holes 23. The support side plate 11 is arranged in an inverted "U" shape, and the lifting groove 12 passes through both sides of the support side plate 11. A support base 14 is fixedly installed at the bottom of the support side plate 11. The outer side of the support side plate 11 is fixedly connected to the support base 14 through the side plate reinforcing rib 13. Multiple sets of support legs 15 are fixedly installed at the bottom of the support base 14. Guide columns 22 are fixedly installed on both sides of the lifting guide frame 21. The guide columns 22 are slidably disposed inside the lifting groove 12. An upper rotating wheel groove 25 is opened at the top of the inner side of the lifting guide frame 21. An upper guide slope 251 and a vertical positioning groove 252 are provided on the inner wall of the upper rotating wheel groove 25. A lower rotating wheel groove 26 is opened at the bottom of the inner side of the lifting guide frame 21. A lower guide slope 261 is provided on the inner wall of the lower rotating wheel groove 26. A mounting bracket 27 is fixedly installed on one side of the lifting guide frame 21.

[0048] The impact mechanism 3 includes a rotating wheel 31 and an impact block 35. The interior of the rotating wheel 31 is fixedly connected to the rotating wheel center ring 34 via a rotating wheel connecting rod 32. The impact block 35 is slidably sleeved on the surface of the rotating wheel connecting rod 32. An impact block positioning groove 351 is formed on the inner wall of the impact block 35. A rotating shaft 341 is fixedly installed inside the rotating wheel center ring 34. Both ends of the rotating shaft 341 are rotatably installed inside the rotating shaft hole 23. Multiple sets of rotating wheel connecting rods 32 are arranged in a circumferential array inside the rotating wheel 31. A support plate is fixedly installed at one end of the rotating wheel connecting rod 32 near the rotating wheel 31. 33. A telescopic hole 321 is provided inside the rotating wheel connecting rod 32. A trigger hole 322 is provided at the end of the telescopic hole 321 away from the rotating wheel center ring 34. The trigger hole 322 penetrates the surface of the rotating wheel 31. A telescopic rod 36 is slidably inserted into the telescopic hole 321. A connecting rod side groove 323 and a positioning bead groove 324 are provided on the side of the rotating wheel connecting rod 32. Both the connecting rod side groove 323 and the positioning bead groove 324 are connected to the telescopic hole 321. The two ends of the positioning bead groove 324 are constricted. Two sets of positioning beads 37 are rolled inside the positioning bead groove 324. A central rod 38 is provided, and a telescopic rod 36 has a telescopic rod clearance groove 361 on its surface. A telescopic rod side block 362 is fixedly installed on the surface of the telescopic rod 36, and the telescopic rod side block 362 slides through the connecting rod side groove 323. A return spring 363 is provided between the end of the telescopic rod 36 near the central ring 34 of the rotating wheel and the inner wall of the telescopic hole 321. A trigger rod 364 is fixedly connected to the end of the telescopic rod 36 away from the central ring 34 of the rotating wheel. The trigger rod 364 is slidably inserted into the inside of the trigger hole 322. A roller 365 is rotatably installed on the end of the trigger rod 364 away from the telescopic rod 36. The wheel center ring 34 is rotatably installed inside the shaft hole 23 via the shaft 341. The two ends of the shaft 341 are fixedly installed with mounting shafts 342. The mounting shafts 342 are slidably inserted into the inside of the lifting groove 12. A one-way bearing 46 is fixedly installed on the surface of the mounting shaft 342. The one-way bearing 46 is located between the support side plate 11 and the lifting guide frame 21. A bushing 52 is fixedly installed on the surface of the one-way bearing 46. Multiple sets of linkage ring guide grooves 521 are opened on the surface of the bushing 52. The linkage ring guide grooves 521 are inclined with one end close to the lifting guide frame 21 and the other end close to the support side plate 11.

[0049] The drive mechanism 4 includes a driving synchronous pulley 43 and a driven synchronous pulley 45, and a synchronous belt 44 sleeved on the surfaces of the driving synchronous pulley 43 and the driven synchronous pulley 45. A drive shaft 41 is fixedly inserted into the inside of the driving synchronous pulley 43, and the drive shaft 41 is rotatably connected to the mounting bracket 27. A lifting mechanism 5 is installed on the side of the drive mechanism 4 corresponding to the position of the driven synchronous pulley 45. The lifting mechanism 5 includes a lifting gear 51 disposed on one side of the driven synchronous pulley 45, a linkage ring 53 installed on the inner side of the driven synchronous pulley 45, and a lifting tooth plate 54 fixedly installed on the inner side of the support side plate 11. Multiple sets of linkage ring connecting grooves 451 are opened on the inner wall of the driven synchronous pulley 45, and the inner wall of the driven synchronous pulley 45 is slidably disposed with the linkage ring 53. Multiple sets of linkage ring connecting columns 531 are fixedly installed on the surface of the linkage ring 53. The linkage ring connecting columns 531 are slidably disposed inside the linkage ring connecting groove 451. Multiple sets of linkage ring guide columns 532 are fixedly installed on the inner wall of the linkage ring 53. The linkage ring 53 is slidably sleeved on the surface of the bushing 52. The linkage ring guide columns 532 are slidably inserted into the interior of the linkage ring guide groove 521. Multiple sets of linkage blocks 533 are fixedly disposed on one side of the linkage ring 53. A drive disk 42 is fixedly installed at the end of the drive shaft 41. The lifting gear 51 is rotatably mounted on the surface of the bushing 52. Multiple sets of linkage grooves 511 are opened on the side of the lifting gear 51 near the linkage ring 53. The position of the linkage groove 511 corresponds to the position of the linkage block 533. The linkage groove 511 meshes with the lifting gear plate 54.

[0050] The driving mechanism 4 drives the impact mechanism 3, causing the impact block 35 to impact the impact plate 24, which in turn drives the guide mechanism 2 to impact the test soil layer, allowing the probe rod 29 to penetrate into the test soil layer for a standard penetration test. After the test is completed, the driving mechanism 4 is rotated in the opposite direction to drive the lifting mechanism 5, causing the lifting gear 51 to climb up along the lifting tooth plate 54, which in turn drives the guide mechanism 2 to move upward, thus pulling the probe rod 29 out of the test soil layer.

[0051] Example 1:

[0052] During the standard penetration test, according to the requirements of the field test, a scale line is drawn on the surface of the support side plate 11 corresponding to the position of the lifting groove 12. The support mechanism 1 is placed at the position of the test soil layer, so that the probe connecting seat 28 corresponds to the test point. Then, the drive disk 42 is rotated clockwise, so that the drive shaft 41 drives the driven synchronous wheel 45 to rotate clockwise through the active synchronous wheel 43 and the synchronous belt 44. The driven synchronous wheel 45 drives the linkage ring 53 to rotate clockwise through the linkage ring connecting groove 451 and the linkage ring connecting column 531. During the rotation of the linkage ring 53, the linkage ring 53 rotates. The moving ring guide post 532 slides inside the linkage ring guide groove 521, driving the linkage ring 53 to move closer to the lifting gear 51, so that the linkage block 533 is engaged inside the linkage groove 511, thereby causing the linkage ring 53 to drive the lifting gear 51 to rotate clockwise. During the rotation of the linkage ring 53 and the bushing 52, due to the action of the one-way bearing 46, the mounting shaft 342 does not rotate with the bushing 52. During the rotation of the lifting gear 51, it climbs up along the lifting tooth plate 54, driving the lifting guide frame 21 to rise, which facilitates the installation of the probe rod 29.

[0053] Example 2:

[0054] Based on Embodiment 1, when the mounting shaft 342 and guide column 22 rise to the top of the lifting groove 12, the specified length of the probe rod 29 is connected to the probe rod connecting seat 28, so that the probe tip at the end of the probe rod 29 is in contact with the test soil layer. Then, the drive disk 42 is rotated counterclockwise, so that the drive shaft 41 drives the driven synchronous wheel 45 to rotate counterclockwise through the active synchronous wheel 43 and the synchronous belt 44. The driven synchronous wheel 45 drives the linkage ring 53 to rotate counterclockwise through the linkage ring connecting groove 451 and the linkage ring connecting column 531. Under the guiding action of the linkage ring guide groove 521 on the linkage ring guide column 532, the linkage ring 53 moves away from the lifting gear 51, so that the linkage block 533 is pulled out from the inside of the linkage groove 511. At this time, the linkage ring 53 is connected to the drive shaft 44. The guide post 532 of the linkage ring drives the bushing 52 to rotate. The bushing 52 drives the mounting shaft 342 to rotate through the one-way bearing 46, thereby driving the rotating wheel 31 to rotate counterclockwise. When a set of rollers 365 rotates into the interior of the upper rotating wheel groove 25, the upper guide slope 251 squeezes the trigger rod 364 to push the telescopic rod 36 towards the end of the telescopic hole 321 near the center ring 34 of the rotating wheel. When the rollers 365 are in contact with the vertical positioning groove 252, the telescopic rod 36 is in a vertical state, and the telescopic rod clearance groove 361 is aligned with the positioning bead groove 324. At this time, the positioning bead 37 and the center rod 38 are squeezed by the impact block 35 and move towards the telescopic rod clearance groove 361, causing the impact block 35 to unlock and fall freely along the rotating wheel connecting rod 32, impacting the bearing plate 24. The impact occurs because the impact plate 24 is mounted on the lifting guide frame 21. The impact force of the impact block 35 on the impact plate 24 is transmitted to the probe rod 29 through the lifting guide frame 21, causing the probe rod 29 to penetrate into the test soil layer. Simultaneously, as the impact block 35 falls, the telescopic rod 36 is driven by the telescopic rod side block 362 to retract further into the telescopic hole 321. When the impact block 35 strikes the surface of the impact plate 24, the roller 365 just disengages from the vertical positioning groove 252, allowing the rotating wheel 31 to continue rotating counterclockwise. During the rotation of the rotating wheel 31, the rotating wheel connecting rod 32 gradually tilts downwards. Under the action of gravity, the impact block 35 slowly slides towards the end of the rotating wheel connecting rod 32 closer to the rotating wheel 31. When the roller 365 rotates to the lower rotating wheel groove 252... Inside the 6, the telescopic rod 36 is compressed by the lower guide slope 261, causing it to move towards the telescopic hole 321 near the center ring 34 of the rotating wheel. When the telescopic rod 36 is vertical, the telescopic rod clearance groove 361 is aligned with the positioning bead groove 324. Under the compression of the impact block 35, the positioning bead 37 and the center rod 38 move towards the telescopic rod clearance groove 361, causing the impact block 35 to fall. When the impact block 35 is in contact with the support plate 33, the impact block positioning groove 351 is aligned with the positioning bead groove 324. After the roller 365 rotates out of the lower rotating wheel groove 26, under the rebound action of the return spring 363, the telescopic rod 36 moves towards the telescopic hole 321 away from the center ring 34 of the rotating wheel, causing the telescopic rod clearance groove 361 to misalign with the positioning bead groove 324.This fixes the positioning bead 37 inside the positioning groove 351 of the impact block, thus fixing the position of the impact block 35. The above method enables cyclical impact during the test. Compared to the traditional method, it eliminates the need to repeatedly push the impact block 35 up, improving test efficiency. Furthermore, since the impact force is determined by both the weight of the impact block 35 and its falling height, and the impact block 35 is mounted on the drive mechanism, it ensures that while meeting the impact force requirements of the experiment, the falling height and release speed of the impact block 35 are consistent each time.

[0055] To meet the needs of different experimental sites and experimental objects, when it is necessary to change the impact force, the weight of the impact block 35 or the falling height of the impact block 35 can be changed according to the actual use environment or test site to achieve the process of changing the force. No other auxiliary force application tools are required. It is simple, effective, convenient, quick and highly practical.

[0056] In this case, during the experiment, the power source of the drive mechanism 4 can be manually rotated by applying force to rotate the drive disk 42, or a motor can be installed at one end of the drive shaft 41 for drive. The motor can be a controllable servo drive motor. It should be noted that, in order to meet the experimental effect, when the rotating wheel 31 drives one of the impact blocks 35 to be directly above 24, the roller 365 is in contact with the side wall of the vertical positioning groove 252, the drive mechanism 4 stops working, the impact block 35 falls and impacts the impact plate 24, and at the same time, it drives the roller 365 to disengage from the inside of the vertical positioning groove 252. The drive mechanism 4 continues to work, driving the rotating wheel 31 to continue rotating.

[0057] After the test is completed, the drive disc 42 is rotated clockwise to drive the lifting gear 51 to climb along the lifting tooth plate 54, so that the lifting guide frame 21 rises, thereby extracting the probe rod 29 and the probe head at the end of the probe rod 29 from the soil and rock layer.

[0058] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the above description, numerous specific details have been set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.

[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An in-situ testing device for geotechnical engineering investigation, characterized in that, include: The guide mechanism (2) is installed inside the support mechanism (1). The support mechanism (1) includes a support side plate (11) and a lifting groove (12) opened on the surface of the support side plate (11). The guide mechanism (2) includes a lifting guide frame (21) and a mounting frame (27). A drive mechanism (4) is installed in the guide mechanism (2) at the position corresponding to the mounting frame (27). A probe rod (29) is installed at the bottom of the lifting guide frame (21) through a probe rod connecting seat (28). A bearing plate (24) is fixedly installed inside the lifting guide frame (21). A pivot hole (23) is opened on both sides of the lifting guide frame (21). The lifting guide frame (21) is fixedly installed with guide columns (22) on both sides. The guide columns (22) are slidably disposed inside the lifting groove (12). The top of the inner side of the lifting guide frame (21) is provided with an upper rotating wheel groove (25). The inner wall of the upper rotating wheel groove (25) is provided with an upper guide slope (251) and a vertical positioning groove (252). The bottom of the lifting guide frame (21) is provided with a lower rotating wheel groove (26). The inner wall of the lower rotating wheel groove (26) is provided with a lower guide slope (261). The lifting guide frame (21) is equipped with a striking mechanism (3) at the position corresponding to the rotating shaft hole (23). The striking mechanism (3) includes a rotating wheel (31) and a striking block (35). The interior of the rotating wheel (31) is fixedly connected to the rotating wheel center ring (34) via a rotating wheel connecting rod (32). The rotating wheel connecting rod (32) has a telescopic hole (321) inside, and a telescopic rod (36) is slidably inserted into the telescopic hole (321). A trigger hole (322) is provided at the end of the telescopic hole (321) away from the rotating wheel center ring (34). The trigger hole (322) penetrates the surface of the rotating wheel (31). The surface of the telescopic rod (36) has a telescopic rod clearance groove (361), and a telescopic rod side block (362) is fixedly installed on the surface of the telescopic rod (36). The telescopic rod side block (362) slides through the connecting rod side groove (323). The telescopic rod (36) is close to the rotating wheel center ring (34). A return spring (363) is provided between one end and the inner wall of the telescopic hole (321). A trigger rod (364) is fixedly connected to the end of the telescopic rod (36) away from the center ring (34) of the rotating wheel. The trigger rod (364) is slidably inserted into the inside of the trigger hole (322). A roller (365) is rotatably installed at the end of the trigger rod (364) away from the telescopic rod (36). A connecting rod side groove (323) and a positioning bead groove (324) are provided on the side of the rotating wheel connecting rod (32). Both the connecting rod side groove (323) and the positioning bead groove (324) are connected to the telescopic hole (321). The two ends of the positioning bead groove (324) are constricted. Two sets of positioning beads (37) are rolled inside the positioning bead groove (324). A center rod (38) is provided between the two sets of positioning beads (37). The impact block (35) is slidably sleeved on the surface of the rotating wheel connecting rod (32). The inner wall of the impact block (35) is provided with an impact block positioning groove (351). The rotating wheel center ring (34) is rotatably installed inside the rotating shaft hole (23) through the rotating shaft (341). The two ends of the rotating shaft (341) are rotatably installed inside the rotating shaft hole (23). The two ends of the rotating shaft (341) are fixedly installed with mounting shafts (342). The mounting shaft (342) is slidably inserted into the lifting groove (12). The surface of the mounting shaft (342) is fixedly installed with a one-way bearing (46). The surface of the one-way bearing (46) is fixedly installed with a bushing (52). The surface of the bushing (52) is provided with multiple sets of linkage ring guide grooves (521). The drive mechanism (4) includes an active synchronous pulley (43) and a driven synchronous pulley (45), and a synchronous belt (44) sleeved on the surfaces of the active synchronous pulley (43) and the driven synchronous pulley (45). A drive shaft (41) is fixedly inserted into the inside of the active synchronous pulley (43), and the drive shaft (41) is rotatably connected to the mounting bracket (27). The inner wall of the driven synchronous pulley (45) has multiple sets of linkage ring connecting grooves (451). A lifting mechanism (5) is installed on the side of the drive mechanism (4) corresponding to the position of the driven synchronous pulley (45). The lifting mechanism (5) includes a lifting gear (51) disposed on one side of the driven synchronous pulley (45) and a linkage ring (53) installed inside the driven synchronous pulley (45), as well as a lifting tooth plate (54) fixedly installed inside the support side plate (11). The linkage ring (53) is slidably disposed with the inner wall of the driven synchronous pulley (45). Multiple sets of linkage ring connecting posts (531) are fixedly installed on the surface of the linkage ring (53). The linkage ring connecting posts (531) are slidably disposed inside the linkage ring connecting groove (451). Multiple sets of linkage ring guide posts (532) are fixedly installed on the inner wall of the linkage ring (53). The linkage ring guide posts (532) are slidably inserted into the linkage ring connecting groove (451). Inside the moving ring guide groove (521), the linkage ring guide groove (521) is inclined with one end close to the lifting guide frame (21) and the other end close to the support side plate (11). The lifting gear (51) has multiple sets of linkage grooves (511) on the side close to the linkage ring (53). Multiple sets of linkage blocks (533) are fixedly arranged on one side of the linkage ring (53). The linkage ring (53) is slidably sleeved on the surface of the bushing (52). The position of the linkage groove (511) corresponds to the position of the linkage block (533). The linkage groove (511) meshes with the lifting gear plate (54). The lifting gear (51) is rotatably mounted on the surface of the bushing (52).

2. The in-situ testing device for geotechnical engineering investigation according to claim 1, characterized in that: The supporting side plate (11) is arranged in an inverted "U" shape. The lifting groove (12) runs through both sides of the supporting side plate (11). The bottom of the supporting side plate (11) is fixedly installed with a supporting base frame (14). The outer side of the supporting side plate (11) is fixedly connected to the supporting base frame (14) through the side plate reinforcing rib (13). The bottom of the supporting base frame (14) is fixedly installed with multiple sets of supporting legs (15).

3. The in-situ testing device for geotechnical engineering investigation according to claim 2, characterized in that: The mounting bracket (27) is fixedly installed on one side of the lifting guide frame (21).

4. The in-situ testing device for geotechnical engineering investigation according to claim 1, characterized in that: The rotating wheel connecting rod (32) is provided in multiple sets, and the multiple sets of rotating wheel connecting rod (32) are arranged in a circular array inside the rotating wheel (31). A support plate (33) is fixedly installed at one end of the rotating wheel connecting rod (32) near the rotating wheel (31).

5. The in-situ testing device for geotechnical engineering investigation according to claim 1, characterized in that: A drive disk (42) is fixedly mounted on the end of the drive shaft (41).

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