CN111257040B

CN111257040B - Shallow sampler

Info

Publication number: CN111257040B
Application number: CN202010123130.XA
Authority: CN
Inventors: 王冰; 韩涛; 宫立新; 安振振; 裴丽娜
Original assignee: Eighth Geological Brigade Of Bureau Of Geology And Mineral Resources Of Hebei Province Marine Geological Resources Investigation Center Of Hebei Province
Current assignee: The Eighth Geological Brigade of Hebei Provincial Bureau of Geology and Mineral Exploration and Development (Hebei Provincial Marine Geological Resources Survey Center)
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2022-04-22
Anticipated expiration: 2040-02-27
Also published as: CN111257040A

Abstract

The invention discloses a shallow sampler, which relates to the field of geological exploration and comprises a sampler integral lifting and lowering mechanism, a sampling driving mechanism, a sampling auxiliary mechanism and a sampling unit. The design scheme is suitable for underwater sampling of shallow water areas of sandy strata and silt strata, continuous and accurate sampling of a shallow sampler is achieved through the integrated layout design of the multiple groups of sampling units, the sampling cone hopper can be attached to the bottom surface of the storage tank to form a closed space after sampling is completed through the design of the storage tank, the sample loss phenomenon is effectively avoided, the sampling cone hopper performs submerged sampling while rotating through the design of the sampling driving mechanism and the sampling auxiliary mechanism, the sample scattering phenomenon caused by underwater impact caused by the fact that the sampling cone hopper is directly inserted into the sample is avoided, and the sampling work is guaranteed to be performed smoothly and orderly.

Description

Shallow sampler

Technical Field

The invention relates to the field of geological exploration, in particular to a shallow sampler.

Background

The shallow layer sampler is widely applied in the field of geological exploration in the prior art, the shallow layer sampler performs underwater sampling on sandy stratum and silt texture layer shallow water areas, the sandy stratum and the silt texture layer are explored into the sandy stratum and the silt texture layer through the conical structure of the sampler, the sandy stratum and the silt texture layer are utilized to present a liquid state phenomenon through disturbance of the sampler in a water saturation state, the liquid state flows into the sampler, when the sampler is extracted, water is filtered through a side water leakage hole of the sampler, the sampling purpose is achieved, but the current shallow layer sampler generally needs manual operation and use by manpower, and is influenced by various uncertain factors such as the working state of a sampler, the ship state and the like, the sampling accuracy is poor, the phenomenon that the sample is lost along with the movement of water flow in the shallow water area is easily generated in the lifting process after the sampling is completed, the sampling failure is caused, and the current sampler does not have the function of precise continuous sampling.

Disclosure of Invention

In order to overcome the above-mentioned defects in the prior art, the present invention provides a shallow sampler.

The technical scheme adopted by the invention for solving the technical problems is as follows: a shallow sampler comprises a sampler integral lifting and lowering mechanism, a sampling driving mechanism, a sampling auxiliary mechanism and a sampling unit, wherein the sampler integral lifting and lowering mechanism comprises a mounting disc, lifting lugs and lifting rings, the sampling driving mechanism comprises fixing columns, a rotating seat, a mounting rod, a motor groove, a lifting driving motor, a lifting reducer, a screw rod, a threaded slider, a screw rod groove, a sliding groove, a slider, a lifting column, a bearing ring, a stepping motor groove, a stepping motor and a flange shaft, the sampling auxiliary mechanism comprises an auxiliary motor groove, an auxiliary motor, an auxiliary reducer and a hexagonal column, the sampling unit comprises an inner hexagonal sleeve, a rotating disc, a bearing disc, a reset spring, a conical hopper, a storage groove, a sliding column, a sealing gasket, an open groove, a mounting block, a mounting bolt, a connecting rod, a supporting rod and a micro hole, the lifting lugs are uniformly distributed in an annular array of 4 groups and mounted on the side wall of the mounting disc, the lifting ring is installed on the lifting lug, the fixed column is rigidly and integrally installed at the central position of the upper end surface of the installation disc, the rotating seat is installed at the upper end of the lifting column through the matching of a bearing ring, the head end of the installation rod is rigidly and integrally installed on the rotating seat, the motor groove is arranged in the hollow part of the bottom end of the fixed column, the lifting driving motor is rigidly installed on the bottom surface of the motor groove, the lifting reducer is installed on a lifting driving motor shell through a reducer bracket, the power input end of the lifting reducer is rigidly connected to the power output shaft of the lifting driving motor, the screw rod is installed in a screw rod groove arranged in the lifting column, the screw rod is rigidly installed at the power output end of the lifting reducer, the thread slider is rigidly installed on the inner wall of the bottom end of the screw rod groove, the thread slider is installed on the screw rod in a matching manner, the sliding grooves are symmetrically arranged on the hollow inner wall of the fixed column in 2 groups, the slide block is symmetrically and rigidly arranged on the outer wall of the bottom end of the lifting column in groups of 2, the slide block is arranged in a slide groove in a matching way, the lifting column is arranged on a fixed column through the slide groove and the slide block in a matching way, a stepping motor groove is arranged on the upper end surface of the lifting column, the stepping motor is rigidly arranged on the bottom surface of the stepping motor groove, a flange shaft is connected and arranged between a power output shaft of the stepping motor and the bottom surface of a hollow groove at the bottom of a rotating seat, an auxiliary motor groove is arranged on the tail end surface of an installation rod, the auxiliary motor is rigidly arranged on the bottom surface of the auxiliary motor groove, the auxiliary speed reducer is arranged on an auxiliary motor shell through a speed reducer support, the hexagonal column is rigidly arranged on the power output end of the auxiliary speed reducer, the power input end of the auxiliary speed reducer is rigidly connected with the power output shaft of the auxiliary motor, and the hexagonal column is arranged in an inner hexagonal sleeve in a matching way under a sampling state, the inner hexagonal sleeve is rigidly installed at the central position of the upper end face of the rotating disc, the bearing disc is connected and installed between the lower end face of the rotating disc and the upper end of the reset spring, the reset spring is nested and installed at the periphery of the sliding column, the reset spring is connected and installed between the lower end face of the bearing disc and the upper end face of the installing disc, the storing groove is arranged at the lower end face of the installing disc, the conical hopper is installed in the storing groove in a non-sampling state in a matched mode, the upper end of the sliding column is rigidly installed at the central position of the lower end face of the rotating disc, the sliding column is installed in a through hole formed in the bottom of the opening groove in a sealing and matching mode through a sealing gasket, the opening groove is formed in the bottom face of the storing groove, the installing block is rigidly and integrally installed at the lower end of the sliding column, the installing bolt is rigidly installed at the upper end of the connecting rod, the installing bolt is installed in a threaded hole formed in the bottom face of the installing block in a matched mode, the supporting rods are uniformly distributed and installed between the lower end of the connecting rod and the inner wall of the conical hopper in groups of 4, and the micro holes are irregularly arranged on the side wall of the conical hopper in groups of 4.

In the shallow sampler, the sampling units are uniformly distributed in 6-12 groups of annular arrays on the mounting disc.

In the shallow sampler, the rotation direction of the inner hexagonal sleeve in the sampling state is a clockwise direction in a overlook mode, and the screwing direction of the mounting bolt is an anticlockwise direction in the overlook mode.

Foretell shallow layer sampler, lift driving motor, lift reduction gear, step motor, auxiliary reduction gear all do water repellent.

The shallow sampler comprises the following steps:

(1) the shallow sampler is integrally and accurately lowered to a sampling area through a lifting lug and a lifting ring;

(2) setting the sampling sequence of each sampling unit and the rotation direction and rotation angle of the stepping motor according to the number of samples to be sampled;

(3) the installation and the hexagonal column are driven by a stepping motor to rotate to the position of an inner hexagonal sleeve which is aligned with the first group of sampling unit design needing sampling;

(4) the sampling driving mechanism carries out lifting work to enable the mounting rod to descend, the hexagonal column is inserted into the inner hexagonal sleeve and rotates under the driving action of the auxiliary motor, and meanwhile, the conical hopper rotates along with the hexagonal column and descends to carry out sampling;

(5) after the sampling of the first group of sampling units is completed, the sampling driving mechanism carries out lifting work to enable the mounting rod to ascend, the conical hopper of the first group of sampling units is retracted into the storage tank under the action of the reset spring, the upper end face of the conical hopper is tightly pressed and attached to the bottom face of the storage tank, after the mounting rod ascends to the hexagonal column and exits from the inner hexagonal sleeve, the mounting rod and the hexagonal column are rotated to be aligned with the position of the inner hexagonal sleeve designed by the second group of sampling units to be sampled through the driving of the stepping motor to carry out second sampling work, and the steps are sequentially and repeatedly carried out according to the required sampling number;

(6) after sampling, the shallow sampler is integrally lifted through the lifting lug and the lifting ring, and the rotating disc is manually pressed down by an operator to enable the conical hopper to move out of the storage tank and manually rotate the conical hopper in the overlooking clockwise direction for disassembly and collection.

The invention has the beneficial effects that the design scheme is suitable for underwater sampling of shallow water areas of sandy strata and silt strata, continuous and accurate sampling of a shallow sampler is realized through the integrated layout design of a plurality of groups of sampling units, the sampling cone hopper can be attached to the bottom surface of the storage tank to form a closed space after sampling is finished through the design of the storage tank, the sample loss phenomenon is effectively avoided, the sampling cone hopper performs submerged sampling while rotating, the sampling cone hopper performs submerged sampling through the design of the sampling driving mechanism and the sampling auxiliary mechanism, the sample scattering phenomenon caused by water impact caused by the fact that the sampling cone hopper is directly inserted into the sample is avoided, and the smooth and orderly sampling work is ensured.

Drawings

The invention is further illustrated with reference to the following figures and examples.

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

FIG. 2 is an enlarged view of a portion of the area A of the present invention;

FIG. 3 is a schematic view of the overall structure of the sampling unit of the present invention in the sampling state;

fig. 4 is a schematic diagram of the overall structure of a shallow sampler in the prior art.

In the figure, 1, a mounting disc, 2, lifting lugs, 3, lifting rings, 4, fixed columns, 5, a rotating seat, 6, a mounting rod, 7, a motor groove, 8, a lifting driving motor, 9, a lifting reducer, 10, a screw rod, 11, a threaded slider, 12, a screw rod groove, 13, a sliding groove, 14, a slider, 15, a lifting column, 16, a bearing ring, 17, a stepping motor groove, 18, a stepping motor, 19, a flange shaft, 20, an auxiliary motor groove, 21, an auxiliary motor, 22, an auxiliary reducer, 23, a hexagonal column, 24, an inner hexagonal sleeve, 25, a rotating disc, 26, a bearing disc, 27, a reset spring, 28, a conical hopper, 29, a storage groove, 30, a sliding column, 31, a sealing gasket, 32, an open groove, 33, a mounting block, 34, a mounting bolt, 35, a connecting rod, 36, a supporting rod and 37 are arranged in a micro hole.

Detailed Description

In order to more clearly illustrate the technical solution of the present invention, the following further description is made with reference to the accompanying drawings, and it is obvious that the following described drawings are only one embodiment of the present invention, and it is within the scope of the present invention for a person of ordinary skill in the art to obtain other embodiments based on the drawings and the embodiment without any creative effort.

The utility model provides a shallow layer sampler, descends mechanism, sample actuating mechanism, sample complementary unit, sampling unit including the whole promotion of sampler, the whole promotion of sampler is descended the mechanism and is included mounting disc 1, lug 2, rings 3, sample actuating mechanism includes fixed column 4, rotates seat 5, installation pole 6, motor groove 7, lift driving motor 8, lift reduction 9, screw rod 10, screw slider 11, screw rod groove 12, spout 13, slider 14, lift post 15, bearing ring 16, step motor groove 17, step motor 18, flange axle 19, sample complementary unit includes auxiliary motor groove 20, auxiliary motor 21, auxiliary reduction 22, hexagonal post 23, sampling unit includes hexagonal socket 24, rotary disk 25, bearing disc 26, reset spring 27, toper fill 28, hold up tank 29, sliding post 30, seal ring 31, open slot 32, installation piece 33, sampling unit includes, The lifting lugs 2 are uniformly arranged on the side wall of the mounting disc 1 in groups of 4 annular arrays, the lifting rings 3 are arranged on the lifting lugs 2, the fixed column 4 is rigidly and integrally arranged at the central position of the upper end face of the mounting disc 1, the rotating seat 5 is arranged at the upper end of the lifting column 15 in a matching way through a bearing ring 16, the head end of the mounting rod 6 is rigidly and integrally arranged on the rotating seat 5, the motor groove 7 is arranged at the hollow part of the inner part of the bottom end of the fixed column 4, the lifting driving motor 8 is rigidly arranged at the bottom surface of the motor groove 7, the lifting reducer 9 is arranged on the shell of the lifting driving motor 8 through a reducer bracket, the power input end of the lifting reducer 9 is rigidly connected with the power output shaft of the lifting driving motor 8, the screw 10 is arranged in a screw groove 12 arranged in the lifting column 15, and the screw 10 is rigidly arranged at the power output end of the lifting reducer 9, the threaded sliding block 11 is rigidly mounted on the inner wall of the bottom end of the screw groove 12, the threaded sliding block 11 is mounted on the screw 10 in a matching manner, the sliding groove 13 is symmetrically arranged on the hollow inner wall of the fixed column 4 in 2 groups, the sliding block 14 is integrally mounted on the outer wall of the bottom end of the lifting column 15 in 2 groups in a symmetrical manner, the sliding block 14 is mounted on the sliding groove 13 in a matching manner, the lifting column 15 is mounted on the fixed column 4 through the sliding groove 13 and the sliding block 14 in a matching manner, the stepping motor groove 17 is arranged on the upper end surface of the lifting column 15, the stepping motor 18 is rigidly mounted on the bottom surface of the stepping motor groove 17, the flange shaft 19 is connected and mounted between the power output shaft of the stepping motor 18 and the bottom surface of the hollow groove at the bottom of the rotating seat 5, the auxiliary motor groove 20 is arranged on the end surface of the mounting rod 6, the auxiliary motor 21 is rigidly mounted on the bottom surface of the auxiliary motor groove 20, and the auxiliary reducer 22 is mounted on the shell of the auxiliary motor 21 through a reducer support, the hexagonal column 23 is rigidly mounted at the power output end of the auxiliary speed reducer 22, the power input end of the auxiliary speed reducer 22 is rigidly connected to the power output shaft of the auxiliary motor 21, the hexagonal column 23 is mounted inside the inner hexagonal sleeve 24 in a matching manner in a sampling state, the inner hexagonal sleeve 24 is rigidly mounted at the central position of the upper end face of the rotating disc 25, the bearing disc 26 is mounted between the lower end face of the rotating disc 25 and the upper end of the reset spring 27 in a connecting manner, the reset spring 27 is mounted at the periphery of the sliding column 30 in a nesting manner, the reset spring 27 is mounted between the lower end face of the bearing disc 26 and the upper end face of the mounting disc 1 in a connecting manner, the storage groove 29 is arranged at the lower end face of the mounting disc 1, the conical hopper 28 is mounted inside the storage groove 29 in a matching manner in a non-sampling state, the upper end of the sliding column 30 is rigidly mounted at the central position of the lower end face of the rotating disc 25, the sliding column 30 is mounted in a through hole formed at the bottom of the open groove 32 in a sealing manner by sealing washer 31 in a sealing manner, the open slot 32 sets up in holding vessel 29 bottom surface, the rigid integral type of installation piece 33 is installed in traveller 30 lower extreme, the rigid integral type of construction bolt 34 is installed in connecting rod 35 upper end, the cooperation is installed in the screw hole that the installation piece 33 bottom surface set up is screwed up to construction bolt 34, the bracing piece 36 divides 4 annular array equipartition connections of group to install between connecting rod 35 lower extreme and toper fill 28 inner wall, miniature hole 37 divides 4 irregular settings in toper fill 28 lateral walls.

In detail, 8 groups of annular arrays of sampling units are uniformly distributed and installed on the installation disc 1, the rotation direction of the inner hexagonal sleeve 24 in the sampling state is the overlooking clockwise direction, the installation bolt 34 is screwed up and turns to the overlooking anticlockwise direction, the lifting driving motor 8, the lifting reducer 9, the stepping motor 18, the auxiliary motor 21 and the auxiliary reducer 22 are all subjected to waterproof treatment, and the shallow sampler sampling method comprises the following steps:

(1) the shallow sampler is wholly and accurately lowered to a sampling area through the lifting lug 2 and the lifting ring 3;

(2) setting the sampling sequence of each sampling unit and the rotation direction and rotation angle of the stepping motor 18 according to the number of samples to be sampled;

(3) the mounting rod 6 and the hexagonal column 23 are rotated to the position of the inner hexagonal sleeve 24 which is aligned with the first group of sampling unit designs needing sampling by the driving of the stepping motor 18;

(4) the sampling driving mechanism carries out lifting work to enable the mounting rod 6 to descend, the hexagonal column 23 is inserted into the inner hexagonal sleeve 24 and rotates under the driving action of the auxiliary motor 21, and meanwhile the conical hopper 28 rotates and descends to carry out sampling;

(5) after the first group of sampling units finishes sampling, the sampling driving mechanism carries out lifting work to enable the mounting rod 6 to ascend, the conical hopper 28 of the first group of sampling units is retracted into the storage tank 29 under the action of the reset spring 27, the upper end face of the conical hopper 28 is tightly pressed and attached to the bottom face of the storage tank 29, after the mounting rod 6 ascends until the hexagonal column 23 exits from the inner hexagonal sleeve 24, the mounting rod 6 and the hexagonal column 23 are rotated to be aligned with the position of the inner hexagonal sleeve 24 designed by the second group of sampling units to be sampled through the driving of the stepping motor 18 to carry out second sampling work, and the steps are sequentially repeated according to the required sampling number;

(6) after sampling, the shallow sampler is lifted integrally through the lifting lug 2 and the lifting ring 3, an operator manually presses down the rotating disc 25 to move the conical hopper 28 out of the storage tank 29, and manually rotates the conical hopper 28 clockwise along the overlooking direction to disassemble and collect a sample.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.

Claims

1. The utility model provides a shallow sampler, includes that sampler whole lifting transfers mechanism, sample actuating mechanism, sample complementary unit, sampling unit, its characterized in that: the sampler is wholly promoted and is transferred mechanism includes mounting disc (1), lug (2), rings (3), sample actuating mechanism includes fixed column (4), rotates seat (5), installation pole (6), motor groove (7), lift driving motor (8), lifting reduction gear (9), screw rod (10), screw slider (11), screw rod groove (12), spout (13), slider (14), lift post (15), bearing ring (16), step motor groove (17), step motor (18), flange axle (19), sample auxiliary mechanism includes auxiliary motor groove (20), auxiliary motor (21), auxiliary reduction gear (22), hexagonal post (23), the unit of sampling includes hexagonal socket head (24), rotary disk (25), bearing disc (26), reset spring (27), toper fill (28), hold up tank (29), The lifting device comprises a sliding column (30), a sealing washer (31), open grooves (32), a mounting block (33), mounting bolts (34), a connecting rod (35), a supporting rod (36) and micro holes (37), wherein the lifting lugs (2) are uniformly arranged on the side wall of a mounting disc (1) in an annular array manner by 4 groups, the lifting rings (3) are arranged on the lifting lugs (2), a fixing column (4) is rigidly and integrally arranged at the central position of the upper end face of the mounting disc (1), a rotating seat (5) is arranged at the upper end of a lifting column (15) in a matching manner through a bearing ring (16), the head end of the mounting rod (6) is rigidly and integrally arranged on the rotating seat (5), a motor groove (7) is arranged in the hollow part of the bottom end of the fixing column (4), a lifting driving motor (8) is rigidly arranged on the bottom surface of the motor groove (7), and a lifting reducer (9) is arranged on a shell of the lifting driving motor (8) through a reducer support, the power input end of the lifting reducer (9) is rigidly connected to the power output shaft of the lifting driving motor (8), the screw (10) is installed in a screw groove (12) arranged inside the lifting column (15), the screw (10) is rigidly installed at the power output end of the lifting reducer (9), the threaded slider (11) is rigidly installed on the inner wall of the bottom end of the screw groove (12), the threaded slider (11) is installed on the screw (10) in a matched mode, the sliding groove (13) is symmetrically arranged on the hollow inner wall of the fixed column (4) in 2 groups, the slider (14) is symmetrically and rigidly installed on the outer wall of the bottom end of the lifting column (15) in 2 groups in an integrated mode, the slider (14) is installed on the sliding groove (13) in a matched mode, the lifting column (15) is installed on the fixed column (4) in a matched mode through the sliding groove (13) and the slider (14), and the stepping motor groove (17) is arranged on the upper end face of the lifting column (15), step motor (18) rigid mount is in step motor groove (17) bottom surface, flange axle (19) connection is installed between step motor (18) power take off shaft and rotation seat (5) bottom cavity tank bottom surface, auxiliary motor groove (20) set up in installation pole (6) terminal surface, auxiliary motor (21) rigid mount is in auxiliary motor groove (20) bottom surface, auxiliary reducer (22) are installed in auxiliary motor (21) casing through the reduction gear support, hexagonal post (23) rigid mount is in auxiliary reducer (22) power take off end, auxiliary reducer (22) power input end rigid connection is in auxiliary motor (21) power take off shaft, hexagonal post (23) cooperation is installed inside hexagon socket head (24) under the sampling state, hexagon socket head (24) rigid mount is in rotary disk (25) up end central point and puts, the device is characterized in that a bearing disc (26) is connected and installed between the lower end face of a rotating disc (25) and the upper end of a return spring (27), the return spring (27) is installed on the periphery of a sliding column (30) in a nested mode, the return spring (27) is connected and installed between the lower end face of the bearing disc (26) and the upper end face of a mounting disc (1), a storage groove (29) is formed in the lower end face of the mounting disc (1), a conical hopper (28) is installed inside the storage groove (29) in a non-sampling state in a matched mode, the upper end of the sliding column (30) is rigidly installed at the center of the lower end face of the rotating disc (25), the sliding column (30) is installed in a through hole formed in the bottom of an open groove (32) in a sealed and matched mode through a sealing gasket (31), the open groove (32) is formed in the bottom face of the storage groove (29), a mounting block (33) is installed at the lower end of the sliding column (30) in a rigid integrated mode, and a mounting bolt (34) is installed at the upper end of a connecting rod (35) in a rigid integrated mode, the mounting bolts (34) are screwed and matched to be mounted in screw holes formed in the bottom surface of the mounting block (33), the support rods (36) are uniformly distributed and connected between the lower end of the connecting rod (35) and the inner wall of the conical hopper (28) in groups of 4 in an annular array mode, and the micro holes (37) are irregularly arranged on the side wall of the conical hopper (28) in groups of 4; the sampling units are uniformly distributed in 6-12 groups of annular arrays on the mounting disc (1).

2. A shallow sampler as claimed in claim 1 wherein the direction of rotation of the socket head (24) in the sampling condition is clockwise in plan view and the tightening of the mounting bolt (34) is turned anticlockwise in plan view.

3. The shallow sampler according to claim 1, wherein the elevation driving motor (8), the elevation reducer (9), the stepping motor (18), the auxiliary motor (21) and the auxiliary reducer (22) are all subjected to waterproof treatment.

4. A shallow sampler as claimed in claim 1, in which the shallow sampler sampling method comprises the steps of:

(1) the shallow sampler is wholly and accurately placed to a sampling area through the lifting lug (2) and the lifting ring (3);

(2) setting the sampling sequence of each sampling unit and the rotation direction and rotation angle of the stepping motor (18) according to the number of samples required;

(3) the mounting rod (6) and the hexagonal column (23) are rotated to the position of an inner hexagonal sleeve (24) which is aligned with the design of the first group of sampling units to be sampled by the driving of the stepping motor (18);

(4) the sampling driving mechanism carries out lifting work to enable the mounting rod (6) to descend, the hexagonal column (23) is inserted into the inner hexagonal sleeve (24) and rotates under the driving action of the auxiliary motor (21), and meanwhile, the conical hopper (28) rotates along with the hexagonal column and descends to carry out sampling;

(5) after the sampling of the first group of sampling units is completed, the sampling driving mechanism carries out lifting work to enable the mounting rod (6) to ascend, the conical hopper (28) of the first group of sampling units is retracted into the storage tank (29) under the action of the reset spring (27), the upper end face of the conical hopper (28) is tightly pressed and attached to the bottom face of the storage tank (29), after the mounting rod (6) ascends until the hexagonal column (23) exits from the inner hexagonal sleeve (24), the mounting rod (6) and the hexagonal column (23) are rotated to be aligned with the position of the inner hexagonal sleeve (24) designed by the second group of sampling units to be sampled through the driving of the stepping motor (18) to carry out second sampling work, and the steps are sequentially repeated according to the required sampling number;

(6) after sampling, the shallow sampler is integrally lifted through the lifting lug (2) and the lifting ring (3), and the rotating disk (25) is manually pressed down by an operator to enable the conical hopper (28) to move out of the storage tank (29) and manually rotate the conical hopper (28) clockwise along overlooking for disassembly and collection.