Geotechnical sampling device in geotechnical engineering

Abstract

The utility model relates to the technical field of rock-soil sampling, in particular to a rock-soil sampling device in geotechnical engineering, which comprises a support table, a bracket mounted on the support table, a lifting table mounted on the bracket and a sampling barrel mounted on the lifting table, the lifting table is controlled to lift through a first driving unit, the sampling barrel is controlled to rotate through a second driving unit, and a drill is mounted at the bottom of the sampling barrel; a piston push plate is installed in the sampling barrel, a piston push rod is fixed to the top of the piston push plate, the rotating shaft is a hollow shaft, and the piston push rod upwards penetrates out along the interior of the rotating shaft. During sampling, under the control of the first driving unit and the second driving unit, the sampling barrel moves downwards while rotating, so that the sampling barrel continuously goes deep into the ground for sampling and is stored in the sampling barrel. After sampling, the top of the piston push rod is knocked downwards, so that the piston push plate pushes out the rock-soil sample downwards along the inner wall of the sampling barrel, the next sampling work can be quickly carried out, and the sampling efficiency of continuous sampling is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rock-soil sampling, in particular to a rock-soil sampling device in geotechnical engineering. BACKGROUND

[0002] The survey work of geotechnical engineering is the basis for design and construction. If the survey work of geotechnical engineering is not in place during the construction of a project, adverse engineering geological problems will be exposed, and even if the design and construction of the upper structure are of high quality, the project will still be damaged. During the geotechnical survey, a rock-soil sampling device is usually used to sample the geotechnical engineering, and the sample soil is analyzed to evaluate the geotechnical engineering, so as to ensure the smooth progress of the project construction.

[0003] At present, during the rock-soil sampling work, after the sampling is completed, the sampling cylinder needs to be removed, and then other tools are used to take out the rock-soil sample inside. Then the sampling cylinder needs to be reinstalled to continue the next sampling work. This sampling method is relatively low in efficiency. Therefore, further improvement can be made. CONTENT OF THE INVENTION

[0004] In order to further improve the sampling efficiency, the present application provides a rock-soil sampling device in geotechnical engineering.

[0005] The rock-soil sampling device in geotechnical engineering provided by the present application adopts the following technical scheme:

[0006] The rock-soil sampling device in geotechnical engineering comprises a support table, a support installed on the support table, a lifting table installed on the support, and a sampling cylinder installed on the lifting table. The lifting table is controlled to lift and lower by a first driving unit. The top of the sampling cylinder is rotatably installed on the lifting table by a rotating shaft. The sampling cylinder is controlled to rotate by a second driving unit. A drill bit is installed at the bottom of the sampling cylinder. A piston push plate is installed in the sampling cylinder. The top of the piston push plate is fixed with a piston push rod. The rotating shaft is a hollow shaft. The piston push rod penetrates upward along the inside of the rotating shaft.

[0007] By adopting the above technical scheme, under the control of the first driving unit and the second driving unit, the sampling cylinder rotates and moves downward at the same time to continuously sample and store the sample in the sampling cylinder. After sampling, the sampling cylinder is taken out upward under the control of the first driving unit. After the sampling cylinder is in place, the top of the piston push rod is knocked downward to push the piston push plate downward along the inner wall of the sampling cylinder to push out the rock-soil sample, so that the next sampling work can be quickly performed, and the sampling efficiency of continuous sampling is improved.

[0008] Optionally, the piston push rod is in the form of a hollow rod. A plurality of gas outlets are formed in the outer wall of the upper and lower ends of the piston push rod, and the gas outlets are communicated with the inside of the piston push rod.

[0009] By adopting the technical scheme, the inside of the sampling cylinder is basically formed into a sealed cavity due to the earth sample inside the sampling cylinder, and the earth sample is not easily pushed out downward by the piston push rod and the piston push plate.

[0010] Optionally, the top of the piston push rod is formed with a limiting flange.

[0011] By adopting the technical scheme, on the one hand, the limiting flange can be used for limiting control to prevent the piston push plate and the piston push rod from directly falling out of the bottom of the sampling cylinder. On the other hand, the limiting flange can increase the area of the top of the piston push rod, which is beneficial to the knocking force of the piston push rod in the process of pushing out the earth sample.

[0012] Optionally, the support frame comprises a base, a top seat and a guide rod installed between the base and the top seat, and the guide rod is arranged on the left and right sides; the lifting platform is installed between the base and the top seat, and the two ends of the lifting platform are respectively slidably arranged on the guide rods on the two sides.

[0013] Optionally, the first driving unit comprises two groups of hydraulic cylinders, and the two groups of hydraulic cylinders are respectively installed on the two sides of the top seat, and the piston rod ends of the hydraulic cylinders downwardly penetrate the top seat and are fixedly connected to the lifting platform.

[0014] By adopting the technical scheme, the hydraulic cylinders on the two sides are used to realize the lifting control of the lifting platform.

[0015] Optionally, the second driving unit comprises a driving motor, the driving motor is fixedly installed on the lifting platform, and the driving motor drives the sampling cylinder to rotate through a gear pair.

[0016] By adopting the technical scheme, the driving motor is used to drive the sampling cylinder to rotate through the gear pair.

[0017] Optionally, the bottom of the support table is provided with a roller.

[0018] By adopting the technical scheme, the roller is installed on the top of the support table, so that the whole sampling device is convenient to transfer.

[0019] Optionally, the roller is provided with a foot cup.

[0020] By adopting the technical scheme, before sampling, the foot cup is placed down to position the whole device, so as to facilitate the subsequent rotary drilling sampling work.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. When sampling, under the control of the first driving unit and the second driving unit, the sampling cylinder rotates and moves downward to continuously sample and store the soil sample in the sampling cylinder. After sampling, under the control of the first driving unit, the sampling cylinder is pulled upward, and after the sampling cylinder is in place, the piston push plate is pushed downward along the inner wall of the sampling cylinder to push out the soil sample, so that the next sampling work can be quickly performed, thereby improving the sampling efficiency of continuous sampling;

[0023] 2. During the process of pushing out the soil sample, due to the soil sample in the sampling cylinder, a sealed cavity is basically formed in the sampling cylinder, and it is not easy to push out the soil sample downward through the piston push rod and the piston push plate. At this time, the internal cavity of the piston push rod is used to form air pressure balance between the inside and outside of the sampling cylinder through the piston push rod, so as to facilitate the smooth pushing out of the soil sample in the sampling cylinder;

[0024] 3. On the one hand, the limiting flange is used for limiting control to prevent the piston push plate and the piston push rod from directly falling out of the bottom of the sampling cylinder. On the other hand, the limiting flange can increase the area of the top of the piston push rod, which is beneficial to the knocking force of the piston push rod during the subsequent pushing out of the soil sample. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the overall structure schematic diagram of the soil sampling device in the geotechnical engineering.

[0026] Figure 2 is the cross-sectional view of the sampling cylinder part in the present application.

[0027] BRIEF DESCRIPTION OF DRAWINGS:

[0028] 1, support table; 11, roller; 12, foot cup; 2, support; 21, base; 22, top; 23, guide rod; 3, lifting platform; 4, sampling cylinder; 41, rotating shaft; 42, drill bit; 43, piston push plate; 44, piston push rod; 45, air outlet; 46, limiting flange; 5, first driving unit; 6, second driving unit. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings Figures 1-2 The present application is further described in detail.

[0030] The present application discloses a soil sampling device in geotechnical engineering.

[0031] Refer to Figure 1The utility model provides a geotechnical engineering geotechnical sampling device, including support table 1, support 2 installed on support table 1, lifting platform 3 installed on support 2 and sampling cylinder 4 installed on lifting platform 3, wherein, lifting platform 3 is controlled lifting by first drive unit 5, the top of sampling cylinder 4 is rotatably installed on lifting platform 3 through pivot 41, and sampling cylinder 4 is controlled rotation through second drive unit 6.

[0032] When sampling, under the control of first drive unit 5 and second drive unit 6, sampling cylinder 4 rotates while descending to continuously sample underground and store in sampling cylinder 4. After sampling, sampling cylinder 4 is taken out upward under the control of first drive unit, and after sampling cylinder 4 is in place, the top of piston push rod 44 is knocked downward to push piston push plate 43 downward along the inner wall of sampling cylinder 4 to push out geotechnical sample, so that the next sampling work can be quickly carried out, thereby improving the sampling efficiency of continuous sampling.

[0033] Referring to Figure 1 Specifically, in the embodiment, support 2 includes base 21, top seat 22 and guide rod 23 installed between base 21 and top seat 22, and guide rod 23 is arranged on the left and right sides. Lifting platform 3 is installed between base 21 and top seat 22, and the two ends of lifting platform 3 are respectively slidably arranged on the guide rods 23 on the two sides.

[0034] First drive unit 5 includes two groups of hydraulic cylinders, and the two groups of hydraulic cylinders are respectively installed on the two sides of top seat 22, and the piston rod end of hydraulic cylinder is fixedly connected to lifting platform 3 after penetrating top seat 22 downward to control lifting.

[0035] Referring to Figure 1 Specifically, in the embodiment, second drive unit 6 includes a drive motor, and the drive motor is fixedly installed on lifting platform 3 and controls the rotation of sampling cylinder 4 through a gear pair.

[0036] Referring to Figure 1 And Figure 2 In the embodiment, piston push rod 44 is in the form of a hollow rod, a plurality of gas outlets 45 are formed on the outer wall of the upper and lower ends of piston push rod 44, and the gas outlets 45 are communicated with the inside of piston push rod 44.

[0037] In the process of pushing the soil sample downwards, the inside of the sampling cylinder 4 is basically formed into a sealed cavity due to the soil sample inside the sampling cylinder 4, and it is not easy to push the soil sample downwards by the piston push rod 44 and the piston push plate 43. At this time, the inside of the sampling cylinder 4 can be balanced with the outside through the piston push rod 44 by using the air outlet hole 45 on the piston push rod 44 and the hollow inside the piston push rod 44, so as to facilitate the smooth pushing of the soil sample in the sampling cylinder 4.

[0038] With reference to Figure 2 In the embodiment, the top of the piston push rod 44 is formed with a limiting flange 46. On the one hand, the limiting flange 46 can be used for limiting control to prevent the piston push plate 43 and the piston push rod 44 from directly falling out of the bottom of the sampling cylinder 4. On the other hand, the limiting flange 46 can increase the area of the top of the piston push rod 44, which is beneficial to the subsequent knocking force on the piston push rod 44 in the process of pushing out the soil sample.

[0039] With reference to Figure 1 In the embodiment, the bottom of the support table 1 is provided with a roller 11, and the roller 11 is provided with a foot cup 12. In actual use, the roller 11 is installed on the top of the support table 1, which facilitates the transfer of the whole sampling device. In addition, before sampling, the foot cup 12 is placed down to position the whole device for the subsequent rotary drilling sampling work.

[0040] The implementation principle is that: during sampling, under the control of the first driving unit 5 and the second driving unit 6, the sampling cylinder 4 rotates and moves downwards at the same time to continuously sample underground and store in the sampling cylinder 4. After sampling, the sampling cylinder 4 is taken out upwards under the control of the first driving unit, and after the sampling cylinder 4 is in place, the top of the piston push rod 44 is knocked downwards to push the soil sample in the sampling cylinder 4 downwards along the inner wall of the sampling cylinder 4, so as to be able to quickly perform the next sampling work, thereby improving the sampling efficiency of continuous sampling.

[0041] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, so: any equivalent changes made on the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A geotechnical sampling device for use in geotechnical engineering, characterised in that: Including support platform (1), support (2) installed on support platform (1), lifting platform (3) installed on support (2) and sampling cylinder (4) installed on lifting platform (3), the lifting platform (3) is controlled lifting by first drive unit (5), the top of the sampling cylinder (4) is rotatably installed on the lifting platform (3) through the rotating shaft (41), and the sampling cylinder (4) is controlled rotating by the second drive unit (6), the bottom of the sampling cylinder (4) is provided with a drill bit (42), the sampling cylinder (4) is provided with a piston push plate (43), the top of the piston push plate (43) is fixed with a piston push rod (44), the rotating shaft (41) is a hollow shaft, and the piston push rod (44) penetrates upward along the inside of the rotating shaft (41).

2. A device for sampling ground in geotechnical engineering according to claim 1, wherein: The piston push rod (44) is hollow rod-shaped, a plurality of gas outlets (45) are formed in the outer wall of the upper and lower ends of the piston push rod (44), and the gas outlets (45) are communicated with the inside of the piston push rod (44).

3. A device for sampling soil in geotechnical engineering according to claim 1, characterized in that: The top of the piston push rod (44) is formed with a limiting flange (46).

4. A device for sampling soil in geotechnical engineering according to claim 1, characterized in that: The support (2) comprises a base (21), a top seat (22) and a guide rod (23) installed between the base (21) and the top seat (22), and the guide rod (23) is arranged on the left and right sides, the lifting platform (3) is installed between the base (21) and the top seat (22), and the two ends of the lifting platform (3) are respectively slidably arranged on the guide rods (23) on the two sides.

5. A device for sampling soil in geotechnical engineering according to claim 3, characterized in that: The first drive unit (5) comprises two groups of hydraulic cylinders, the two groups of hydraulic cylinders are respectively installed on the two sides of the top seat (22), and the piston rod end of the hydraulic cylinder penetrates downward through the top seat (22) and is fixedly connected to the lifting platform (3).

6. A device for sampling soil in geotechnical engineering according to claim 1, characterized in that: The second drive unit (6) comprises a drive motor, the drive motor is fixedly installed on the lifting platform (3), and the drive motor drives the sampling cylinder (4) to rotate through a gear pair.

7. A device for sampling soil in geotechnical engineering according to claim 1, characterized in that: The bottom of the support platform (1) is provided with a roller (11).

8. A device for sampling ground in geotechnical engineering according to claim 7, characterised in that: The roller (11) is provided with a foot cup (12).

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