A portable geotechnical testing apparatus

Abstract

The utility model provides a kind of portable geotechnical detection equipment, comprising: main box and the accommodation slot being opened on main box;Display main body is rotatably connected with the side wall of accommodation slot two ends;Several telescopic holes, being opened in the both sides of main box, and length adjustable support rod is respectively arranged in several telescopic holes;Among them, support rod includes: limit section is worn in telescopic hole;Telescopic group one end is rotatably connected with limit section;In use state, limit section is placed in telescopic hole, telescopic group is placed in telescopic hole outside, and the angle between telescopic group and limit section is adjusted to support main box;Several connecting rods, in use state, are placed between adjacent support rods;The portable geotechnical detection equipment proposed by the utility model is compact in structure, reduces equipment occupied space, is convenient for outdoor transportation and carrying, can greatly shorten leveling time simultaneously, is adapted to various outdoor complex operation scene.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a portable geotechnical testing device. Background Technology

[0002] Geotechnical testing is a key component in engineering geological exploration, highway and building subgrade construction quality control, and other fields. Portable geotechnical testing equipment is widely used in the industry because it can achieve rapid on-site sampling and testing, avoiding errors caused by disturbance during sample transportation.

[0003] However, due to the uneven ground conditions in outdoor working environments (such as mountains, temporary roadbeds, etc.), existing portable geotechnical testing equipment is difficult to quickly adjust to a level state in complex field scenarios, resulting in equipment shaking during the testing process, which directly affects the accuracy of the test data. Utility Model Content

[0004] The purpose of this utility model is to provide a portable geotechnical testing device that can solve the above-mentioned technical problems.

[0005] This utility model provides a portable geotechnical testing device, comprising:

[0006] The main housing and the receiving slot opened on the main housing; the display body is rotatably connected to the side walls at both ends of the receiving slot;

[0007] Several telescopic holes are provided on both sides of the main body, and each telescopic hole is equipped with a support rod of adjustable length.

[0008] The support rod includes: a limiting section that passes through the telescopic hole; one end of the telescopic assembly that is rotatably connected to the limiting section; in use, the limiting section is placed inside the telescopic hole, the telescopic assembly is placed outside the telescopic hole, and the main box is supported after adjusting the angle between the telescopic assembly and the limiting section.

[0009] Several connecting rods are used to connect adjacent support rods, and are placed between adjacent support rods in use.

[0010] As a further technical solution, it also includes:

[0011] A holding trough is provided on the receiving trough; in the stored state, several connecting rods are placed inside the holding trough.

[0012] As a further technical solution, the connecting rod includes:

[0013] The core section and the first and second extended sections respectively passing through both ends of the core section;

[0014] The first limiting body and the second limiting body are respectively set in the second extended sections at both ends of the core section.

[0015] As a further technical solution, the first limiting body includes:

[0016] The operating part and the limiting part are connected by several connecting columns;

[0017] An operating body is mounted on the operating section; a locking pin is mounted on the limiting section.

[0018] A drive unit is provided between the operating part and the limiting part. In use, the operating part drives the drive unit to move, and the drive unit drives the locking pin to move.

[0019] As a further technical solution, the driving body includes:

[0020] A limit platform is installed on the limit section;

[0021] A movable stage and a drive block disposed on the movable stage, with both ends of the drive block passing through the operating part and the limiting part, respectively;

[0022] An elastomer is fitted at one end onto a limiting platform and at the other end onto a moving platform.

[0023] As a further technical solution, a first inclined surface is provided at one end of the driving block; a second inclined surface is provided at the other end of the driving block;

[0024] The operating body is provided with a third inclined surface, which is adapted to the first inclined surface; the locking post is provided with a limit groove, and a fourth inclined surface is provided in the limit groove, which is adapted to the second inclined surface.

[0025] As a further technical solution, the second extended section is provided with mounting holes and operating holes; in the installed state, the snap-fit ​​post passes through the mounting hole and the operating body passes through the operating hole.

[0026] As a further technical solution, threads are provided on the outer surfaces of both the operating part and the limiting part, and are threadedly connected to the second extended section.

[0027] As a further technical solution, the telescopic group includes:

[0028] The first telescopic rod has one end rotatably connected to the limiting section;

[0029] The second telescopic rod has one end inserted inside the first telescopic rod and is threadedly connected to the first telescopic rod;

[0030] The third telescopic rod has one end inserted inside the second telescopic rod and is threadedly connected to the second telescopic rod.

[0031] As a further technical solution, a stabilizing ring is provided on the other end of the third telescopic rod, and the outer diameter of the stabilizing ring is equal to the inner diameter of the telescopic hole.

[0032] The technical solution of this utility model is that the limiting section is inserted into the telescopic hole of the main box, which not only ensures the stability of the connection between the support rod and the main box, but also provides a reliable support foundation for the telescopic assembly. One end of the telescopic assembly is rotatably connected to the limiting section. In use, the length of the telescopic assembly can be adjusted to adapt to uneven ground of different heights. At the same time, by rotating the angle between the telescopic assembly and the limiting section, the difference in ground slope can be quickly compensated, and the main box can be accurately adjusted to a horizontal state. Compared with existing equipment, the leveling time is greatly shortened, and it is suitable for various complex outdoor operation scenarios.

[0033] Several support rods extend from the expansion holes on both sides of the main box body to form a multi-point distributed support, avoiding the problem of easy tilting and shaking caused by single-point support. In use, the connecting rod connects the adjacent support rods, connecting the distributed support rods into an overall support frame, which greatly improves the anti-shaking ability of the support structure, reduces the displacement of the equipment caused by ground vibration or external force interference during the testing process, and directly ensures the authenticity and accuracy of geotechnical testing data.

[0034] The main display unit is rotatably connected to the side walls at both ends of the receiving slot. Operators can flexibly adjust the tilt angle of the main display unit according to the outdoor lighting angle and standing position to avoid data reading errors caused by reflection or poor viewing angle, thus improving the ease of operation. The limiting section of the support rod can be retracted into the telescopic hole, and the connecting rod can be detached from the support rod and stored separately when not in use. The overall structure is compact, reducing the space occupied by the equipment and facilitating outdoor transportation and carrying. Attached Figure Description

[0035] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is a perspective view of a portable geotechnical testing device according to the present invention.

[0037] Figure 2 This is a perspective view of a portable geotechnical testing device of this utility model from one state and another angle.

[0038] Figure 3 This is a structural schematic diagram of another state of the portable geotechnical testing equipment of this utility model;

[0039] Figure 4 for Figure 3 A cross-sectional view along the AA direction;

[0040] Figure 5This is a perspective view of the connecting rod in this utility model;

[0041] Figure 6 This is a perspective view of the first limiting body in this utility model;

[0042] Figure 7 This is a schematic diagram of the structure of the first limiting body in this utility model;

[0043] Figure 8 for Figure 7 Cross-sectional view along the BB direction.

[0044] Explanation of reference numerals in the attached figures:

[0045] 101-Main housing; 102-Accommodation slot; 103-Display body; 104-Telescopic hole; 105-Cap; 106-Container slot; 107-Support column; 200-Support rod; 201-Limiting section; 202-Telescopic assembly; 221-First telescopic rod; 222-Second telescopic rod; 223-Third telescopic rod; 224-Stabilizing ring; 300-Connecting rod; 301-Core section; 302-First extension section; 303-Second extension section; 304 - First limiting body; 341-Operating part; 342-Limiting part; 321-Mounting plate; 322-Operating protrusion; 343-Connecting column; 344-Operating body; 345-Snap-fit ​​column; 346-Driver body; 361-Limiting platform; 362-Moving platform; 363-Drive block; 364-Elastic body; 371-First inclined surface; 372-Second inclined surface; 373-Third inclined surface; 374-Fourth inclined surface; 500-Weighing module; 600-Scanning module. Detailed Implementation

[0046] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0047] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" 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; 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 utility model based on the specific circumstances.

[0049] like Figure 1-8 As shown, the present invention proposes a portable geotechnical testing device, comprising:

[0050] The main housing 101 and the receiving groove 102 formed on the main housing 101; the display body 103 is rotatably connected to the side walls at both ends of the receiving groove 102; specifically, the display body 103 is pin-connected to the side walls at both ends of the receiving groove 102, and when rotating, the display body 103 rotates around the pin as the axis. In addition, a support column 107 is also provided on the display body 103. When the display body 103 is in an inclined state, the support column 107 supports the display body 103 to ensure the stability of the display body 103 in the inclined state. Of course, in order to cooperate with the use of the support column 107, it is possible to... A support hole (not shown in the figure) is provided in the receiving groove 102 to ensure the stability of the support column 107; in addition, a circuit board, power supply and wiring, etc., as in the prior art are also provided in the main box 101. Since the prior art is adopted, this utility model will not describe it further; at the same time, a weighing module 500 and a scanning module 600, as in the prior art, are also provided on the main box 101. The scanning module 600 obtains the identification code (QR code, etc.) on the detection box, and the weighing module 500 weighs the detection box; since the prior art is adopted, this utility model will not describe it further.

[0051] Several telescopic holes 104 are formed on both sides of the main housing 101, and adjustable support rods 200 are respectively provided in the telescopic holes 104; in this utility model, preferably, four telescopic holes 104 are provided, two on each side of the main housing 101, and support rods 200 are respectively provided in the four telescopic holes 104; Figure 4As shown, the support rod 200 includes: a limiting section 201 passing through the telescopic hole 104; and a telescopic assembly 202, one end of which is rotatably connected to the limiting section 201. In use, the limiting section 201 is placed inside the telescopic hole 104, and the telescopic assembly 202 is placed outside the telescopic hole 104. After adjusting the angle between the telescopic assembly 202 and the limiting section 201, the main housing 101 is supported. In actual operation, by operating the telescopic assembly 202, the telescopic assembly 202 is removed from the telescopic hole 104, and at the same time, the telescopic assembly 202 drives the limiting section 201 to slide within the telescopic hole 104. After the telescopic assembly 202 is removed from the telescopic hole 104, it is necessary to ensure that the limiting section 201 is placed inside the telescopic hole 104. The limiting section 201 is used to connect the telescopic assembly 202 to the main body 101. After adjusting the length of the telescopic assembly 202, the angle between the telescopic assembly 202 and the limiting section 201 is adjusted. After all four telescopic assemblies 202 are adjusted, the main body 101 is supported by the cooperation of the four telescopic assemblies 202 and the four limiting sections 201. The length of the telescopic assembly 202 is adjusted according to the height of different positions to adapt to different usage environments.

[0052] In addition, several connecting rods 300 are connected to adjacent support rods 200 and placed between adjacent support rods 200 in use. Specifically, a connecting hole (not shown in the figure) is provided on the telescopic assembly 202, and the two ends of the connecting rod 300 are respectively inserted into the adjacent connecting holes to achieve adjacent fixation. Of course, during use, the length of the connecting rod 300 can be adjusted according to the spacing and angle of the adjacent support rods 200 to adapt to different usage requirements.

[0053] The technical solution of this utility model uses a limiting section 201 inserted into the telescopic hole 104 of the main housing 101 to ensure the stability of the connection between the support rod 200 and the main housing 101, and to provide a reliable support foundation for the telescopic assembly 202. One end of the telescopic assembly 202 is rotatably connected to the limiting section 201. During use, the length of the telescopic assembly 202 can be adjusted to adapt to uneven ground of different heights. At the same time, by rotating the angle between the telescopic assembly 202 and the limiting section 201, the difference in ground slope can be quickly compensated, and the main housing 101 can be accurately adjusted to a horizontal state. Compared with existing equipment, the leveling time is greatly shortened, and it is suitable for various complex outdoor operation scenarios. In addition, the weighing module 500 and the scanning module 600 are integrated into the main housing 101. With the help of a multi-point stable support structure, the deviation of detection data caused by equipment shaking is avoided, further ensuring the detection accuracy.

[0054] Several support rods 200 extend from the expansion holes 104 on both sides of the main housing 101 to form a multi-point distributed support, avoiding the problem of easy tilting and shaking caused by single-point support. In use, the connecting rod 300 connects the adjacent support rods 200, connecting the distributed support rods 200 in series to form an overall support frame, which greatly improves the anti-shaking ability of the support structure, reduces the displacement of the equipment caused by ground vibration or external force interference during the testing process, and directly ensures the authenticity and accuracy of geotechnical testing data.

[0055] The display body 103 is rotatably connected to the side walls at both ends of the receiving slot 102. Operators can flexibly adjust the tilt angle of the display body 103 according to the outdoor light angle and standing position to avoid data reading errors caused by reflection or poor viewing angle and improve the ease of operation. The limiting section 201 of the support rod 200 can be retracted into the telescopic hole 104. The connecting rod 300 can be detached from the support rod 200 and stored separately when not in use. The overall structure is compact, reducing the space occupied by the equipment and facilitating outdoor transportation and carrying.

[0056] like Figure 2 As shown, in the stored state, the support column 107 and connecting rod 300 can be stored separately. For ease of movement and storage, this utility model preferably provides a holding groove 106, which is opened on the receiving groove 102. In the stored state, several connecting rods 300 are placed in the holding groove 106. Of course, the support column 107 can also be placed in the holding groove 106 at the same time. In this way, when the display body 103 is in the receiving groove 102, the display body 103 can cover the holding groove 106, preventing several connecting rods 300 and support column 107 from falling out of the holding groove 106. In addition, the display body 103 can be tied to the main box 101 by strapping or the like. Buckles can also be set on the display body 103 and slots can be set in the receiving groove 102. The display body 103 and the receiving groove 102 are connected by the buckle and the slot. Since buckles and slots are existing technology, this utility model will not describe them further.

[0057] like Figure 5As shown, the connecting rod 300 includes a core section 301 and a first extended section 302 and a second extended section 303 respectively passing through both ends of the core section 301; a first limiting body 304 and a second limiting body are respectively disposed in the second extended sections 303 at both ends of the core section 301; in this utility model, the first extended section 302 is threadedly connected to the core section 301, and the second extended section 303 is threadedly connected to the first extended section 302, so that different usage requirements can be met by adjusting the connection length between the first extended section 302, the second extended section 303 and the core section 301 during use; in addition, the first limiting body 304 and the second limiting body are respectively threadedly connected to the second extended sections 303 at both ends of the core section 301, and are limited by the first limiting body 304 and the second limiting body when the second extended section 303 is connected to the support rod 200.

[0058] like Figure 6-8 As shown, the first limiting body 304 includes an operating part 341 and a limiting part 342, which are connected by a plurality of connecting posts 343. An operating body 344 passes through the operating part 341. A locking post 345 passes through the limiting part 342. A driving body 346 is provided between the operating part 341 and the limiting part 342. In use, the operating body 344 drives the driving body 346 to move, and the driving body 346 in turn drives the locking post 345 to move. In this invention, the two ends of the connecting post 343 can be threadedly connected to the operating part 341 and the limiting part 342 respectively, thereby ensuring stability after connection. When the limiting part 342 is operated, the operating part 341 can follow the movement. In addition, there are two operating bodies 344 and two locking posts 345, which are arranged opposite to each other on the operating part 341 and the limiting part 342. In the installed state, the limiting post is placed in the connecting hole on the support rod 200. When it is necessary to separate the connecting rod 300 and the support rod 200, the operating body 344 is pressed, which drives the driving body 346 to move. The driving body 346 drives the locking post 345 to move, and the locking post 345 retracts into the limiting part 342, so that the connecting rod 300 and the support rod 200 are separated.

[0059] It should be noted that the second extended section 303 is provided with mounting holes and operating holes. In the installed state, the locking pins 345 are inserted into the mounting holes, and the operating body 344 is inserted into the operating holes. Thus, when operating the operating body 344, one can place their hand in the operating holes to operate the operating body 344. When the hand is removed from the operating body 344, the operating body 344 is reset by the drive body 346. A spring is provided between the two locking pins 345. When the drive body 346 moves the locking pins 345, it compresses the spring between the two locking pins 345. When the drive body 346 disengages from the locking pins 345, the locking pins 345 are reset by the spring.

[0060] like Figure 8 As shown, the driving body 346 includes a limiting platform 361, a moving platform 362, and an elastic body 364; the limiting platform 361 is disposed on the limiting part 342; the moving platform 362 and a driving block 363 disposed on the moving platform 362, with both ends of the driving block 363 passing through the operating part 341 and the limiting part 342 respectively; one end of the elastic body 364 is sleeved on the limiting platform 361, and the other end is sleeved on the moving platform 362; wherein, the driving block 363 is fixedly connected to the moving platform 362, and when the operating body 344 contacts the driving block 363, it pushes the driving block. 363 moves linearly, and drives the moving platform 362 to move linearly via the drive block 363. During the movement, the drive block 363 compresses the elastic body 364. When the hand is separated from the operating body 344, the moving block returns to its original position under the action of the elastic body 364. It should be noted that both the operating part 341 and the limiting part 342 are provided with moving holes, and both ends of the drive block 363 pass through the moving holes. This ensures the stability of the moving platform 362 and the drive block 363 during the operation. The preferred elastic body 364 is a spring.

[0061] In addition, one end of the drive block 363 is provided with a first inclined surface 371; the other end of the drive block 363 is provided with a second inclined surface 372; the operating body 344 is provided with a third inclined surface 373, which is adapted to the first inclined surface 371; the locking post 345 is provided with a limiting groove, and a fourth inclined surface 374 is provided in the limiting groove, which is adapted to the second inclined surface 372; when the drive body 346 is operated, the third inclined surface 373 contacts the first inclined surface 371, and as the force applied to the operating body 344 increases, the third inclined surface 373 pushes the first inclined surface 371 to move continuously, thereby moving the drive block 363; when the fourth inclined surface 374 contacts the third inclined surface 373, as the operating body 344 is continuously pressed down, the third inclined surface 373 drives the locking post 345 to move, causing the locking post 345 to retract into the limiting part 342;

[0062] like Figure 6 As shown, threads are provided on the outer surfaces of both the operating part 341 and the limiting part 342, and they are threadedly connected to the second extended section 303. In addition, a mounting plate 321 is provided on the limiting part 342, and the mounting plate 321 is fixed to the snap-fit ​​post 345 by bolts. A plurality of operating protrusions 322 are provided on the mounting plate 321. When the plurality of operating protrusions 322 are operated, the operating part 341 and the limiting part 342 rotate, thereby realizing the installation or removal of the second extended section 303. It should be noted that the structure of the second limiting body is the same as the structure of the first limiting body 304. For the sake of saving space, the structure of the second limiting body will not be further described in this utility model.

[0063] like Figure 4As shown, the telescopic assembly 202 includes a first telescopic rod 221, a second telescopic rod 222, and a third telescopic rod 223. One end of the first telescopic rod 221 is rotatably connected to the limiting section 201. One end of the second telescopic rod 222 passes through the first telescopic rod 221 and is threadedly connected to it. One end of the third telescopic rod 223 passes through the second telescopic rod 222 and is threadedly connected to it. When the telescopic assembly 202 is removed from the telescopic hole 104, the connection length of the first telescopic rod 221, the second telescopic rod 222, and the third telescopic rod 223 can be adjusted according to the usage environment to meet different usage needs. Of course, the number of telescopic rods can be increased according to actual needs, and the specific number can be determined based on the actual situation. This utility model does not further limit the scope of the invention.

[0064] When the telescopic assembly 202 is in the telescopic hole 104, to prevent the telescopic assembly 202 from shaking inside the telescopic hole 104, it is preferable to provide a stabilizing ring 224 on the other end of the third telescopic rod 223. The outer diameter of the stabilizing ring 224 is equal to the inner diameter of the telescopic hole 104. In this way, by contacting the inner wall of the inner diameter of the telescopic hole 104 with the stabilizing ring 224, shaking is prevented during movement. In addition, to prevent the telescopic assembly 202 from accidentally detaching from the telescopic hole 104, it is preferable to also provide a cover 105 on the telescopic hole 104. When the telescopic assembly 202 is placed inside the telescopic hole 104, the cover 105 seals the telescopic hole 104, thereby preventing the telescopic assembly 202 from accidentally detaching from the telescopic hole 104.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A portable geotechnical testing device, characterized in that, include: The main housing (101) and the receiving groove (102) formed on the main housing (101); the display body (103) is rotatably connected to the side walls at both ends of the receiving groove (102); Several telescopic holes (104) are provided on both sides of the main housing (101), and adjustable support rods (200) are respectively provided in the several telescopic holes (104); The support rod (200) includes: a limiting section (201) passing through the telescopic hole (104); one end of the telescopic assembly (202) being rotatably connected to the limiting section (201); in use, the limiting section (201) is placed inside the telescopic hole (104), the telescopic assembly (202) is placed outside the telescopic hole (104), and the angle between the telescopic assembly (202) and the limiting section (201) is adjusted to support the main housing (101); Several connecting rods (300) for connecting adjacent support rods (200) are placed between adjacent support rods (200) in use.

2. The portable geotechnical testing device according to claim 1, characterized in that, Also includes: A holding tank (106) is provided on the receiving tank (102); In the stored state, several connecting rods (300) are placed in the holding slot (106).

3. The portable geotechnical testing device according to claim 1, characterized in that, The connecting rod (300) includes: The core segment (301) and the first extended segment (302) and the second extended segment (303) respectively passing through both ends of the core segment (301); The first limiting body (304) and the second limiting body are respectively disposed in the second extended section (303) at both ends of the core section (301).

4. The portable geotechnical testing device according to claim 3, characterized in that, The first limiting body (304) includes: The operation part (341) and the limiting part (342) are connected by a plurality of connecting posts (343); An operating body (344) is inserted through the operating part (341); a locking pin (345) is inserted through the limiting part (342); A drive body (346) is provided between the operating part (341) and the limiting part (342). In use, the operating body (344) drives the drive body (346) to move, and the drive body (346) drives the locking post (345) to move.

5. The portable geotechnical testing device according to claim 4, characterized in that, The drive unit (346) includes: A limiting platform (361) is disposed on the limiting part (342); A mobile stage (362) and a drive block (363) disposed on the mobile stage (362), wherein the two ends of the drive block (363) are respectively inserted into the operation part (341) and the limiting part (342); An elastomer (364) is fitted at one end onto the limiting stage (361) and at the other end onto the moving stage (362).

6. The portable geotechnical testing device according to claim 5, characterized in that, One end of the drive block (363) is provided with a first inclined surface (371); the other end of the drive block (363) is provided with a second inclined surface (372); The operating body (344) is provided with a third inclined surface (373), which is adapted to the first inclined surface (371); the snap-fit ​​post (345) is provided with a limiting groove, and a fourth inclined surface (374) is provided in the limiting groove, which is adapted to the second inclined surface (372).

7. The portable geotechnical testing device according to claim 6, characterized in that, The second extended section (303) is provided with an installation hole and an operation hole; in the installed state, the snap-fit ​​post (345) passes through the installation hole and the operating body (344) passes through the operation hole.

8. The portable geotechnical testing device according to claim 4, characterized in that, The outer surfaces of the operating part (341) and the limiting part (342) are both provided with threads and are threadedly connected to the second extended section (303).

9. The portable geotechnical testing device according to claim 1, characterized in that, The telescopic assembly (202) includes: The first telescopic rod (221) is rotatably connected at one end to the limiting section (201); The second telescopic rod (222) has one end inserted into the first telescopic rod (221) and is threadedly connected to the first telescopic rod (221); The third telescopic rod (223) has one end inserted inside the second telescopic rod (222) and is threadedly connected to the second telescopic rod (222).

10. The portable geotechnical testing device according to claim 9, characterized in that, A stabilizing ring (224) is provided at the other end of the third telescopic rod (223), and the outer diameter of the stabilizing ring (224) is equal to the inner diameter of the telescopic hole (104).

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