CN219490913U - Roadbed in-situ soil sampling device - Google Patents

Abstract

The utility model discloses a roadbed in-situ soil sampling device which comprises an outer cover shell, wherein the bottom of the outer cover shell is provided with an opening, a sub-column is arranged in the outer cover shell, a guide assembly is arranged between the outer wall of the sub-column and the inner wall of the outer cover shell, a sampling power assembly is further arranged on the outer cover shell and used for driving the sub-column to move along the guide direction of the guide assembly, the inner part of the sub-column is hollow, the lower end of the sub-column is provided with a sampling port, the inner part of the sub-column is further provided with a detachable ring cutter, the top of the outer cover shell is provided with an annular handle, and the periphery of the outer cover shell is further provided with a supporting leg which can be accommodated. The utility model can stably acquire the soil sample, has high sampling quality and effectively improves the accuracy of experimental data.

Description

Roadbed in-situ soil sampling device

Technical Field

The utility model relates to the field of soil sample detection, in particular to a roadbed in-situ soil sampling device.

Background

In the field of engineering geological exploration and geotechnical engineering, the soil body is often required to be sampled, and a series of experiments on physical and mechanical properties are carried out on the soil body to obtain physical and mechanical property indexes of the exploration soil body. The road quality detection is no exception, and in order to determine whether the abnormal point is true or not after the geophysical prospecting is finished, field sampling is required, so that it is of great importance to ensure the original state of the soil sample as much as possible.

Undisturbed soil plays an important role in measuring various indexes of soil. However, in engineering geological exploration operation, the conventional soil sampling operation mode generally inevitably produces disturbance on soil samples, but is related to more and less; the presence of these problems results in poor quality samples.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the roadbed in-situ soil sampling device, which can stably acquire soil samples, has high sampling quality and effectively improves the accuracy of experimental data.

In order to solve the technical problems, the utility model provides a roadbed in-situ soil sampling device, which comprises an outer cover shell, wherein an opening is formed in the bottom of the outer cover shell, a sub-column is arranged in the outer cover shell, a guide assembly is arranged between the outer wall of the sub-column and the inner wall of the outer cover shell, a sampling power assembly is further arranged on the outer cover shell and used for driving the sub-column to move along the guide direction of the guide assembly, a sampling port is formed in the hollow inner part of the sub-column, a detachable ring cutter is further arranged in the sub-column, an annular grip is arranged at the top of the outer cover shell, and a supporting leg capable of being accommodated is further arranged on the periphery of the outer cover shell.

Further, the guide assembly comprises at least two guide convex parts, the guide convex parts are uniformly arranged on the inner wall of the outer cover shell, and guide grooves matched with the guide convex parts are formed in the surfaces of the sub-columns corresponding to the guide convex parts.

Further, the sampling power assembly comprises a first motor, a transmission gear and a rack, wherein the rack is fixed on the sub-column, and the motor is connected with the transmission gear and is fixed on the outer cover shell.

Further, the sampling power assembly comprises a second motor and a screw lifting assembly, the end part of a transmission screw of the screw lifting assembly is connected with a force transmission bearing, and the force transmission bearing is fixed on the sub-column.

Further, the sub-column comprises a mounting plate, a sampling barrel is arranged at the bottom of the mounting plate, and the cutting ring is arranged on the inner wall of the sampling barrel.

Further, the cutting ring is fixedly connected with the sampling barrel through a screw, and a plurality of locking holes for adjusting the locking height are formed in the outer wall of the sampling barrel along the axial direction.

Further, a probe is arranged on the outer wall of the sub-column, and the probe is connected with a static cone penetration tester.

Further, the sampling port is arranged as a conical surface.

The utility model has the beneficial effects that:

the outer cover shell is used as a support during sampling, the sub-column is used as a sampling working part, the sampling direction of the sub-column is fixed, disturbance to a soil sample is reduced, and the sampling quality is greatly improved.

The detachable cutting ring is arranged inside the sub-column, when sampling is carried out, the soil sample can be compressed when passing through the cutting ring, the soil sample in the cutting ring is tightly not dropped, and the soil sample entering the inside of the sub-column can not generate excessive friction force with the sub-column, so that the soil sample can be taken out conveniently.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of FIG. 1 in accordance with the present utility model;

FIG. 3 is a schematic cross-sectional view of a sub-column structure of the present utility model;

fig. 4 is a schematic diagram of a sub-column structure driven by a screw rod structure.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

Referring to fig. 1 to 3, an embodiment of the roadbed in-situ soil sampling device of the present utility model includes an outer cover shell 1, the outer cover shell may be circular, the bottom of the outer cover shell is open, a sub-column 2 is disposed in the outer cover shell, the sub-column is also circular, a guiding component is disposed between the outer wall of the sub-column and the inner wall of the outer cover shell, a sampling power component 4 is further disposed on the outer cover shell, the sampling power component is used for driving the sub-column to move along the guiding direction of the guiding component, a sampling port 5 is disposed at the lower end of the sub-column, a detachable ring cutter 6 is further disposed in the sub-column, the ring cutter is disposed at a sampling position, the soil sample in the ring cutter is used for detection, an annular grip 7 is disposed at the top of the outer cover shell, so as to facilitate the handheld operation and the taking and the placing position of the outer cover shell is further provided with a storable supporting leg 8 on the periphery of the outer cover shell.

When the sampling device is used, the annular grip is held by hand, the outer cover shell is directly placed at a position needing to be sampled, then the supporting legs are spread, the outer cover shell is prevented from toppling over, the sampling power assembly is started, the sub-column stretches out towards the bottom opening in the outer cover shell, namely, the sub-column is inserted into soil at the sampling position until the required depth is reached, the sampling power assembly is reset, the soil sample is compressed by the cutting ring and is easily separated from the original soil, so that the soil sample can be broken and separated in the resetting process, the periphery of the outer cover shell can be excavated before resetting, the soil at the sampling position is cut off after the sub-column is found, and then resetting is carried out, so that the sampling quality is improved to the greatest extent. And before detection, the cutting ring is unfixed, then the soil sample and the cutting ring are taken out together, and the soil samples on the two sides of the axial direction of the cutting ring are removed.

In order to better take out the soil sample, the sub-column is designed to comprise a mounting plate 15, a sampling barrel 16 is arranged at the bottom of the mounting plate, a ring cutter is arranged on the inner wall of the sampling barrel, the sampling barrel can be in threaded connection, when the soil sample is taken out, the sub-column is firstly taken out through a sampling power assembly, and the soil sample can be conveniently taken out by taking the sampling barrel out of the mounting plate after the sub-column is extended out; specifically, the cutting ring is fixedly connected with the sampling barrel through the screw 17, the screw is taken down after the sampling barrel is taken down, and the soil sample is ejected at one section of the sampling barrel, so that the soil sample and the cutting ring can be taken out from the sampling barrel together; a plurality of locking holes 18 for adjusting locking height are also arranged on the axial outer wall of the sampling barrel, and the cutting ring is fixed at the corresponding position according to different sampling depths.

Of course, when the on-the-spot multiple sampling of needs, can replace a plurality of sampling barrels practical can, the simple operation, the sampling barrel remains can the laboratory, can also carry out effective protection to the soil sample of getting.

The probe 19 can be further arranged on the outer wall of the sub-column, the probe is connected with the static cone penetration tester, after the sub-column is inserted into soil, the probe collects the soil friction force in real time, the driving speed of the sampling power assembly is adjusted according to the transmitted soil friction force, the change of the soil friction coefficient can be perceived to the greatest extent, the power of the sampling power assembly is adjusted in time, and the sampling efficiency of undisturbed soil samples is improved.

The guide assembly comprises at least two guide convex parts which are uniformly arranged on the inner wall of the outer cover shell, the surfaces of the sub-columns corresponding to the guide convex parts are provided with guide grooves 9 matched with the guide convex parts, and the guide assembly is simple in structure and does not affect sampling of the sub-columns.

And the sampling power assembly is designed into a first motor 10, a transmission gear 11 and a rack 12, the rack is fixed on the sub-column, the motor is connected with the transmission gear and is fixed on the outer cover shell, the transmission gear is connected with the rack in a matched manner, the first motor drives the transmission gear to rotate, the transmission gear drives the rack to move up and down, the transmission gear can be regarded as a gear transmission assembly, powerful transmission torque is provided, and the rack moves to bring the sub-column to move.

The above-mentioned sampling power component can also be designed into second motor 13 and lead screw lifting assembly 14, refer to the figure 4 and show, the transmission lead screw tip and the power transmission bearing of lead screw lifting assembly are connected, the power transmission bearing is fixed on the sub-post, realize the effect that drives the sub-post lift through the lift of lead screw in the lead screw lifting assembly, the transmission lead screw rotates and offset by the power transmission bearing, the sub-post does not rotate, and the lift action after the transmission lead screw rotates then transmits to the sub-post through the power transmission bearing, realizes the lift of sub-post.

The sampling port is arranged to be a conical surface to form a cutting edge, so that soil can be conveniently taken out.

The above embodiments are merely preferred embodiments for fully explaining the present utility model, and the scope of the present utility model is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present utility model, and are intended to be within the scope of the present utility model. The protection scope of the utility model is subject to the claims.

Claims (8)

1. The utility model provides a road bed normal position soil sampling device, its characterized in that, includes the dustcoat casing, dustcoat casing bottom opening, be provided with the sub-post in the dustcoat casing, be provided with guide assembly between sub-post outer wall and the dustcoat casing inner wall, still be provided with sampling power assembly on the dustcoat casing, sampling power assembly is used for driving sub-post and removes along guide assembly direction, the sub-post is inside hollow and the lower extreme is provided with the sample connection, the sub-post is inside still to be provided with detachable cutting ring, dustcoat casing top is provided with annular handle, still be provided with the supporting leg that can accomodate on the dustcoat casing periphery.

2. The subgrade in situ soil sampling device as claimed in claim 1, wherein said guide assembly comprises at least two guide protrusions uniformly disposed on the inner wall of the housing, and the corresponding sub-post surfaces of said guide protrusions are provided with guide grooves for mating with said guide protrusions.

3. The subgrade in situ soil sampling device as claimed in claim 2, wherein said sampling power assembly includes a first motor, a drive gear and a rack, said rack being secured to the sub-column, said motor being coupled to the drive gear and secured to the outer housing.

4. The subgrade in situ soil sampling device as claimed in claim 2, wherein said sampling power assembly includes a second motor and a screw lift assembly, a drive screw end of said screw lift assembly being connected to a force transfer bearing, said force transfer bearing being secured to a sub-column.

5. The subgrade in-situ soil sampling device as claimed in claim 3 or 4, wherein the sub-column comprises a mounting plate, a sampling barrel is arranged at the bottom of the mounting plate, and the ring cutter is mounted on the inner wall of the sampling barrel.

6. The subgrade in-situ soil sampling device as claimed in claim 5, wherein the cutting ring is fixedly connected with the sampling barrel through screws, and a plurality of locking holes for adjusting the locking height are formed in the outer wall of the sampling barrel in the axial direction.

7. The subgrade in-situ soil sampling device as claimed in claim 3 or 4, wherein a probe is arranged on the outer wall of the sub-column, and the probe is connected with a static cone penetration tester.

8. The subgrade in situ soil sampling device as claimed in claim 1, wherein the sampling port is configured as a conical surface.