CN219104385U

CN219104385U - Soil sampling device

Info

Publication number: CN219104385U
Application number: CN202222963619.5U
Authority: CN
Inventors: 田万利
Original assignee: Guangzhou Pearl River Industrial Environmental Protection Co ltd
Current assignee: Guangzhou Pearl River Industrial Environmental Protection Co ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-05-30
Anticipated expiration: 2032-11-07

Abstract

The utility model relates to the technical field of geological investigation, in particular to a soil sampling device, which comprises a base and a fixed plate fixed at the top of the base, wherein a supporting plate is arranged in the fixed plate, a first motor is fixed at the top of the supporting plate, a first drill bit is fixed on an output shaft of the first motor, and an adjusting structure for adjusting the length of the first drill bit is arranged on the surface of the first drill bit; according to the utility model, the length of the drill bit can be adjusted, the deeper soil can be conveniently sampled, meanwhile, splash soil and stones can be shielded when the soil is drilled, the protection of constructors is facilitated, and after the soil sampling is completed, the soil and the stones can be automatically separated, so that the use of workers is facilitated, and the problems that the length of the drill bit cannot be adjusted, the workers cannot be conveniently protected when the current sampling device is used for sampling, and the soil and the stones cannot be automatically separated are solved.

Description

Soil sampling device

Technical Field

The utility model relates to the technical field of geological investigation, in particular to a soil sampling device.

Background

Before a building work is performed, a survey sample of the target area is required.

Geological exploration is understood as geological work in a broad sense, and is investigation and research work for geological conditions such as rock, stratum structure, mineral products, groundwater, landforms and the like in a certain area by applying geological exploration methods such as mapping, geophysical exploration, geochemical prospecting, drilling, pothole exploration, sampling test, geological remote sensing and the like according to requirements of economic construction, national defense construction and scientific and technical development.

The geological survey generally needs sampling device to sample and detect soil, and can confirm the geological properties in this region through the research to soil composition to draw geological conclusion, current sampling device is although can carry out soil detection to the region of different degree of depth, but because the length of drill bit is fixed, when need take a sample to the soil of depths, need change the drill bit, so not only waste time and energy, still reduced the effect of work, simultaneously at the in-process of taking a sample, the concrete and the stone that drill out splash at will easily, lead to constructor to receive the injury, and after the sample is accomplished, contain the stone in the soil, need artifical manual take out the stone, further reduced the efficiency of work.

Disclosure of Invention

The utility model aims to provide a soil sampling device which can adjust the length of a drill bit, is convenient for sampling deeper soil, can shield splashed soil and stones when the soil is drilled, is convenient for protecting constructors, can automatically separate the soil from the stones after the soil is sampled, is convenient for the use of staff, and solves the problems that the conventional sampling device cannot adjust the length of the drill bit, is inconvenient for protecting the staff during sampling, and cannot automatically separate the soil from the stones.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a soil sampling device, includes base and the fixed plate in top thereof, the inside of fixed plate is provided with the backup pad, the top of backup pad is fixed with first motor, the output shaft of first motor is fixed with first drill bit, the surface of first drill bit is provided with the regulation structure that is used for adjusting first drill bit length, the surface of regulation structure is provided with the limit structure rather than the cooperation use, the inboard of fixed plate is provided with the elevation structure that is used for driving the backup pad and carries out the reciprocates, the surface swing joint of fixed plate has first baffle, the inside of first baffle is fixed with a plurality of first springs, the other end of first spring is fixed with the second baffle, the top of first baffle left and right sides all is provided with the drive structure that is used for driving it to go up and down, the top of fixed plate is provided with the screening structure that is used for carrying out the separation to soil and cobble, the intermediate position at base top is provided with the clean structure to first drill bit and regulation structure surface.

Preferably, the lifting structure comprises a second motor, a first screw rod, a first driving wheel, a first driven wheel and a second screw rod, wherein the second motor is arranged at the top of the fixed plate, an output shaft of the second motor is fixedly connected with one end of the first screw rod, the other end of the first screw rod is rotationally connected with the top of the base, the inside of the first driving wheel is fixedly connected with the surface of the first screw rod, the first driving wheel is in transmission connection with the second driven wheel through a belt, the inside of the second driven wheel is fixedly connected with one end of the second screw rod, the other end of the second screw rod is rotationally connected with the left side of the top of the base, and the surfaces of the first screw rod and the second screw rod are in threaded connection with the inside of the support plate.

Preferably, the adjusting structure comprises a second drill bit, a sliding groove, a sliding block and a torsion disc, wherein the second drill bit is movably connected with the surface of the first drill bit, the sliding groove is formed in the left side and the right side of the second drill bit, the sliding block is fixedly connected with the two sides of the inner cavity of the second drill bit, the sliding block is in sliding connection with the inner part of the sliding groove, the torsion disc is in threaded connection with the surface of the first drill bit, and the bottom of the torsion disc is rotationally connected with the top of the second drill bit.

Preferably, the driving structure comprises a second driving wheel, a second driven wheel, a third screw rod, a movable block, a connecting rod, a fixed disc and pulleys, wherein the number of the second driving wheels is two, the second driving wheels are respectively connected with the surfaces of the first screw rod and the second screw rod in a fixed manner, the second driving wheel is connected with the second driven wheel through a belt in a transmission manner, the inside of the second driven wheel is fixedly connected with one end of the third screw rod, the other end of the third screw rod is rotationally connected with the top of the base, the movable block is in threaded connection with the surface of the third screw rod, the number of the fixed discs is two, the fixed discs are fixedly connected with two sides of the top of the first baffle, the pulleys are in rolling connection with the inside of the fixed disc, the bottom of the movable block is fixedly connected with one end of the connecting rod, and the other end of the connecting rod is fixedly connected with the top of the pulleys.

Preferably, the screening structure comprises a shell, a vertical plate, a screening plate, a third motor, a rotating rod and cams, wherein the shell is fixed at the top of the fixing plate, the vertical plate is fixed inside the shell, one end of the screening plate is rotationally connected with one side of the vertical plate, the third motor is arranged on the surface of the shell, an output shaft of the third motor is fixedly connected with one end of the rotating rod, the number of the cams is two, and the cams are fixedly connected with the surface of the rotating rod.

Preferably, the limit structure comprises a limit rod, a limit plate, a second spring, a clamping plate and a limit hole, wherein the limit rod is fixed on the surface of the second drill bit, the inside of the limit plate is movably connected with the surface of the limit rod, the second spring is sleeved on the surface of the limit rod, the limit holes are provided with a plurality of holes, the limit holes are formed in the top of the torsion plate, one end of the clamping plate is fixedly connected with the surface of the limit plate, and the other end of the clamping plate is matched with the inside of the limit hole.

Preferably, the cleaning structure comprises a fixed ring, a third spring and a cleaning brush, wherein the fixed ring is fixedly connected to the middle position of the top of the base, the third springs are provided with a plurality of springs, one ends of the third springs are fixed to two sides of an inner cavity of the fixed ring, and the other ends of the third springs are fixedly connected with one side of the cleaning brush.

Preferably, one side of the movable block is fixedly connected with a first electric push rod, and both sides of the fixed plate are provided with limiting grooves.

Preferably, one side fixedly connected with diaphragm of shell inner chamber, the bottom fixedly connected with of diaphragm has a plurality of fourth springs, the other end of fourth spring and the fixed surface of screening board other end are connected, one side of riser is provided with first collection box, the below of screening board is provided with the second and collects the box.

Preferably, the left side and the right side of the base are both fixedly connected with a second electric push rod, and the output end of the second electric push rod is fixedly connected with a fixing lug.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, through the cooperation between the second drill bit, the sliding groove, the sliding block and the torsion disc, the second drill bit can slide on the surface of the first drill bit, and the length between the first drill bit and the second drill bit is convenient to adjust, so that deeper soil can be sampled, the accuracy is improved, workers can be protected during sampling, the applicability can be improved, the soil can be suitable for different grounds, and the applicability is improved, meanwhile, the sampled soil and stones can be automatically screened through the cooperation among the vertical plate, the screening plate, the third motor, the rotating rod and the cam, the time and labor are saved, the working efficiency is greatly improved, the problems that the length of the drill bit cannot be adjusted, the workers cannot be protected during sampling, and the soil and the stones cannot be automatically separated are solved.

Drawings

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

FIG. 2 is a right side elevation view of the present utility model;

FIG. 3 is a right side view of the present utility model;

FIG. 4 is a schematic view of a partial structure of the present utility model;

FIG. 5 is a schematic cross-sectional view of a first baffle plate according to the present utility model;

FIG. 6 is a schematic view of a rear cross-sectional structure of the housing of the present utility model;

FIG. 7 is a schematic top view of a retaining ring according to the present utility model;

FIG. 8 is a schematic top view of a second drill bit according to the present utility model;

FIG. 9 is a schematic view of a partial enlarged structure of the present utility model at A in FIG. 1;

fig. 10 is a schematic view of a partially enlarged structure at B in fig. 1 according to the present utility model.

In the figure: 1. a base; 2. a fixing plate; 3. a lifting structure; 31. a second motor; 32. a first screw; 33. a first drive wheel; 34. a first driven wheel; 35. a second screw; 4. a support plate; 5. a first motor; 6. a first drill bit; 7. an adjustment structure; 71. a second drill bit; 72. a chute; 73. a slide block; 74. twisting the disc; 8. a limit structure; 81. a limit rod; 82. a limiting plate; 83. a second spring; 84. a clamping plate; 85. a limiting hole; 9. a driving structure; 91. a second driving wheel; 92. a second driven wheel; 93. a third screw; 94. a movable block; 95. a connecting rod; 96. a fixed plate; 97. a pulley; 10. a first baffle; 11. a first electric push rod; 12. a limit groove; 13. a movable rod; 14. a second electric push rod; 15. a fixing bump; 16. a screening structure; 161. a housing; 162. a riser; 163. a screening plate; 164. a third motor; 165. a rotating rod; 166. a cam; 17. a cross plate; 18. a fourth spring; 19. a first collection box; 20. a second collection box; 21. a cleaning structure; 211. a fixing ring; 212. a third spring; 213. a cleaning brush; 22. a second baffle; 23. a first spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-10, a soil sampling device comprises a base 1 and a fixed plate 2 fixed at the top thereof, a supporting plate 4 is arranged in the fixed plate 2, movable rods 13 are movably connected at the front and rear sides of the inner part of the supporting plate 4, two ends of each movable rod 13 are respectively fixed with the inner sides of the base 1 and the fixed plate 2, a first motor 5 is fixed at the top of the supporting plate 4, a first drill bit 6 is fixed on an output shaft of the first motor 5, an adjusting structure 7 for adjusting the length of the first drill bit 6 is arranged on the surface of the first drill bit 6, a limit structure 8 matched with the adjusting structure 7 is arranged on the surface of the adjusting structure 7, a lifting structure 3 for driving the supporting plate 4 to move up and down is arranged on the inner side of the fixed plate 2, a first baffle 10 is movably connected on the surface of the fixed plate 2, a plurality of first springs 23 are fixed in the inner part of the first baffle 10, the other end of the first spring 23 is fixedly provided with a second baffle 22, and a plurality of second baffles 22 are movably connected, so that the design not only can improve the tightness, but also can facilitate the lamination to different concave-convex ground surfaces, and improve the applicability, the tops of the left side and the right side of the first baffle 10 are respectively provided with a driving structure 9 for driving the first baffle to lift, the top of the fixed plate 2 is provided with a screening structure 16 for separating soil and stones, the middle position of the top of the base 1 is provided with a cleaning structure 21 for cleaning the surfaces of the first drill bit 6 and the adjusting structure 7, the second drill bit 71 can slide on the surface of the first drill bit 6 through the cooperation among the second drill bit 71, the sliding groove 72, the sliding block 73 and the torsion disc 74, and the length between the first drill bit 6 and the second drill bit 71 can be conveniently adjusted, so that deeper soil can be sampled, and improve the accuracy nature, through the setting of first baffle 10, first spring 23 and second baffle 22, not only can protect the staff when the sample, can also be applicable to different ground moreover, and improve the suitability, simultaneously through riser 162, screening board 163, third motor 164, the cooperation between rotary rod 165 and the cam 166 is used, soil and the stone after the sample can carry out automatic screening, and labour saving and time saving, the efficiency of work has been improved greatly, the length of drill bit can't be adjusted to current sampling device has been solved, and be inconvenient for protecting the staff when the sample, and can't carry out autosegregation's problem to soil and stone.

The lifting structure 3 comprises a second motor 31, a first screw rod 32, a first driving wheel 33, a first driven wheel 34 and a second screw rod 35, wherein the second motor 31 is arranged at the top of the fixed plate 2, an output shaft of the second motor 31 is fixedly connected with one end of the first screw rod 32, the other end of the first screw rod 32 is rotationally connected with the top of the base 1, the inside of the first driving wheel 33 is fixedly connected with the surface of the first screw rod 32, the first driving wheel 33 is in transmission connection with the second driven wheel 92 through a belt, the inside of the second driven wheel 92 is fixedly connected with one end of the second screw rod 35, the other end of the second screw rod 35 is rotationally connected with the left side of the top of the base 1, the surfaces of the first screw rod 32 and the second screw rod 35 are in threaded connection with the inside of the support plate 4, the second motor 31 can be started in the drilling process, the first screw rod 32 and the first driving wheel 33 are driven to rotate, and simultaneously the first driven wheel 34 and the second screw rod 35 are synchronously rotated through the belt, and the support plate 4 is driven to move downwards, and soil with different depths is sampled.

The adjusting structure 7 comprises a second drill bit 71, a chute 72, a sliding block 73 and a torsion disc 74, wherein the second drill bit 71 is movably connected with the surface of the first drill bit 6, the chute 72 is formed in the left side and the right side of the second drill bit 71, the sliding block 73 is fixedly connected to the two sides of the inner cavity of the second drill bit 71, the sliding block 73 is in sliding connection with the inside of the chute 72, the torsion disc 74 is in threaded connection with the surface of the first drill bit 6, the bottom of the torsion disc 74 is rotatably connected with the top of the second drill bit 71, and when deeper soil needs to be drilled and sampled, the torsion disc 74 can be rotated in advance to drive the second drill bit 71 to move downwards, and drilling and sampling can be continued after the second drill bit is moved to a desired position.

The driving structure 9 comprises a second driving wheel 91, a second driven wheel 92, a third screw 93, a movable block 94, a connecting rod 95, a fixed disc 96 and pulleys 97, wherein the number of the second driving wheels 91 is two, the second driving wheels 91 are respectively fixedly connected with the surfaces of the first screw 32 and the second screw 35, the second driving wheel 91 is in transmission connection with the second driven wheel 92 through a belt, the inside of the second driven wheel 92 is fixedly connected with one end of the third screw 93, the other end of the third screw 93 is rotationally connected with the top of the base 1, the movable block 94 is in threaded connection with the surface of the third screw 93, the fixed disc 96 is two, the movable block 94 is fixedly connected with the two sides of the top of the first baffle 10, the pulleys 97 are in rolling connection with the inside of the fixed disc 96, the bottom of the movable block 94 is fixedly connected with one end of the connecting rod 95, the other end of the connecting rod 95 is fixedly connected with the top of the pulleys 97, in the drilling and sampling process, in order to prevent splashing of soil and broken stone, when the device is in downward drilling, as the surfaces of the first screw 32 and the second screw 35 are fixedly connected with the second driving wheel 91, the second driving wheel 91 can rotate, when the second driving wheel 92 rotates, the second driving wheel 92 can rotate, the second driving wheel 92 and the movable block 94 can rotate and the second driving wheel 92 and the movable block 94 can be driven by the second driving wheel 92 and the movable block 95 to move downwards through the second baffle 10 and the movable block 95 and move downwards, and the fixed disc and move down, and the fixed disc can move.

The screening structure 16 includes shell 161, riser 162, screening board 163, third motor 164, rotary rod 165 and cam 166, the top at fixed plate 2 is fixed to the shell 161, riser 162 is fixed in the inside of shell 161, the one end of screening board 163 rotates with one side of riser 162 to be connected, the third motor 164 sets up the surface at shell 161, the output shaft of third motor 164 and the one end fixed connection of rotary rod 165, the quantity of cam 166 has two, and they all are with the fixed surface connection of rotary rod 165, after soil sampling is accomplished, can take out soil from first drill bit 6 and second drill bit 71, and pour into the inside of shell 161, make soil and stone fall into the surface of screening board 163, at this moment, third motor 164 drives rotary rod 165 and cam 166 and rotates, when the bottom of cam 166 rotates the top, can drive screening board 163 upwards and make the angle deflection, when cam 166 rotates to the initial position, because soil and stone all have weight, can drive screening board 163 and make a reciprocal way, soil and stone screening.

The limit structure 8 comprises a limit rod 81, a limit plate 82, a second spring 83, a clamping plate 84 and a limit hole 85, wherein the limit rod 81 is fixed on the surface of the second drill bit 71, the inside of the limit plate 82 is movably connected with the surface of the limit rod 81, the second spring 83 is sleeved on the surface of the limit rod 81, the limit holes 85 are provided with a plurality of limit holes, the limit holes are formed in the tops of the torsion disc 74, one end of the clamping plate 84 is fixedly connected with the surface of the limit plate 82, the other end of the clamping plate 84 is matched with the inside of the limit hole 85, the clamping plate 84 can be pushed upwards when the length of the first drill bit 6 and the second drill bit 71 is adjusted, one end of the clamping plate 84 is separated from the inside of the limit hole 85, after the length of the first drill bit 6 and the second drill bit 71 is adjusted, the clamping plate 84 can be loosened, and the limiting plate 82 drives the clamping plate 84 to limit the torsion disc 74 and the second drill bit 71 through elastic force of the second spring 83.

The cleaning structure 21 comprises a fixed ring 211, a third spring 212 and a cleaning brush 213, wherein the fixed ring 211 is fixedly connected to the middle position of the top of the base 1, the third spring 212 is provided with a plurality of springs, one ends of the springs are fixed to two sides of an inner cavity of the fixed ring 211, the other ends of the springs 212 are fixedly connected with one side of the cleaning brush 213, after soil sampling is completed, the first drill bit 6 and the second drill bit 71 can be lifted upwards, and the cleaning brush 213 can be elastically forced through the third spring 212, so that soil on the surfaces of the first drill bit 6 and the second drill bit 71 can be cleaned conveniently.

One side fixedly connected with first electric putter 11 of movable block 94, limit groove 12 has all been seted up to the both sides of fixed plate 2, can carry out spacingly to movable block 94, makes movable block 94 can take place the rotation after first baffle 10 and second baffle 22 and ground contact, and when needs drive first baffle 10 and go up and down simultaneously, the output of first electric putter 11 can reinsert to the inside of limit groove 12 and carry out spacingly.

One side of the inner cavity of the shell 161 is fixedly connected with a transverse plate 17, the bottom of the transverse plate 17 is fixedly connected with a plurality of fourth springs 18, the other ends of the fourth springs 18 are fixedly connected with the surface of the other ends of the screening plates 163, one side of the vertical plate 162 is provided with a first collecting box 19, the lower side of the screening plates 163 is provided with a second collecting box 20, when the screening plates 163 deflect upwards at an angle, the screening plates 163 can be buffered through third springs 212, and meanwhile, the screening plates 163 can be driven to deflect downwards at an angle through the elastic force of the third springs 212.

The left and right sides of base 1 all fixedly connected with second electric putter 14, the output fixedly connected with fixed lug 15 of second electric putter 14, after the device moved to the desired position, can start second electric putter 14 to drive fixed lug 15 and fix ground, and improve the stability when probing the sample.

Working principle: when the device is used, firstly, the device is moved to a desired position, then the second electric push rod 14 is started, the fixing lug 15 is driven to fix the position of the device, then the first motor 5 is started, the first drill bit 6 and the second drill bit 71 are driven to rotate, meanwhile, the first drill bit 6 and the second drill bit 71 are driven to drill downwards through the lifting structure 3, in the downward moving process, the first baffle 10 and the second baffle 22 are driven to move downwards through the driving structure 9 until the second baffle 22 is attached to the ground, if soil sampling is completed, the soil can be poured into the screening structure 16, stones and the soil are screened, the stones and the soil after screening can be uniformly collected through the first collecting box 19 and the second collecting box 20, in order to improve the accuracy of soil detection, when the lengths of the first drill bit 6 and the second drill bit 71 are required to be limited and fixed through the adjusting structure 7 and the limiting structure 8, and finally, the operations are repeated.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

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

Claims

1. The utility model provides a soil sampling device, includes base (1) and fixed plate (2) in its top, its characterized in that: the inside of fixed plate (2) is provided with backup pad (4), the top of backup pad (4) is fixed with first motor (5), the output shaft of first motor (5) is fixed with first drill bit (6), the surface of first drill bit (6) is provided with regulation structure (7) that are used for adjusting first drill bit (6) length, the surface of regulation structure (7) is provided with limit structure (8) rather than the cooperation use, the inboard of fixed plate (2) is provided with elevation structure (3) that are used for driving backup pad (4) and reciprocate, the surface swing joint of fixed plate (2) has first baffle (10), the inside of first baffle (10) is fixed with a plurality of first springs (23), the other end of first spring (23) is fixed with second baffle (22), the top of first baffle (10) both sides all is provided with and is used for driving its drive structure (9) that goes up and down, the top of fixed plate (2) is provided with and is used for carrying out separation to soil and stone screening structure (16), the top position (1) is used for cleaning the first structure (21) of top of first baffle (23).

2. A soil sampling apparatus as claimed in claim 1, wherein: the lifting structure (3) comprises a second motor (31), a first screw rod (32), a first driving wheel (33), a first driven wheel (34) and a second screw rod (35), wherein the second motor (31) is arranged at the top of the fixed plate (2), an output shaft of the second motor (31) is fixedly connected with one end of the first screw rod (32), the other end of the first screw rod (32) is rotationally connected with the top of the base (1), the inside of the first driving wheel (33) is fixedly connected with the surface of the first screw rod (32), the first driving wheel (33) is in transmission connection with the second driven wheel (92) through a belt, the inside of the second driven wheel (92) is fixedly connected with one end of the second screw rod (35), the other end of the second screw rod (35) is rotationally connected with the left side of the top of the base (1), and the surfaces of the first screw rod (32) and the second screw rod (35) are in threaded connection with the inside of the supporting plate (4).

3. A soil sampling apparatus as claimed in claim 1, wherein: the adjusting structure (7) comprises a second drill bit (71), a sliding groove (72), a sliding block (73) and a torsion disc (74), wherein the second drill bit (71) is movably connected with the surface of the first drill bit (6), the sliding groove (72) is formed in the left side and the right side of the second drill bit (71), the sliding block (73) is fixedly connected to the two sides of the inner cavity of the second drill bit (71), the sliding block (73) is in sliding connection with the inner portion of the sliding groove (72), the torsion disc (74) is in threaded connection with the surface of the first drill bit (6), and the bottom of the torsion disc (74) is rotationally connected with the top of the second drill bit (71).

4. A soil sampling apparatus as claimed in claim 2, wherein: the driving structure (9) comprises a second driving wheel (91), a second driven wheel (92), a third screw (93), a movable block (94), a connecting rod (95), a fixed disc (96) and pulleys (97), wherein the number of the second driving wheel (91) is two, the second driving wheel (91) is respectively connected with the surfaces of the first screw (32) and the second screw (35) in a rolling manner, the second driving wheel (91) is connected with the second driven wheel (92) through a belt, the inside of the second driven wheel (92) is fixedly connected with one end of the third screw (93), the other end of the third screw (93) is rotationally connected with the top of the base (1), the movable block (94) is in threaded connection with the surface of the third screw (93), the fixed disc (96) is fixedly connected with two sides of the top of the first baffle (10), the pulleys (97) are in rolling connection with the inside of the fixed disc (96), the bottom of the movable block (94) is fixedly connected with one end of the connecting rod (95), and the top of the other end of the connecting rod (95) is fixedly connected with the top of the pulley (97).

5. A soil sampling apparatus as claimed in claim 1, wherein: screening structure (16) include shell (161), riser (162), screening board (163), third motor (164), rotary rod (165) and cam (166), the top at fixed plate (2) is fixed to shell (161), riser (162) are fixed in the inside of shell (161), one end and the one side rotation of riser (162) of screening board (163) are connected, third motor (164) set up the surface at shell (161), the output shaft of third motor (164) and the one end fixed connection of rotary rod (165), the quantity of cam (166) has two, and their all with the fixed surface connection of rotary rod (165).

6. A soil sampling apparatus as claimed in claim 3, wherein: limit structure (8) are including gag lever post (81), limiting plate (82), second spring (83), cardboard (84) and spacing hole (85), the surface at second drill bit (71) is fixed to gag lever post (81), the inside of limiting plate (82) is with the surface swing joint of gag lever post (81), second spring (83) cover is established on the surface of gag lever post (81), spacing hole (85) are provided with a plurality of, and they all set up at the top of twisting dish (74), the one end and the fixed surface of limiting plate (82) of cardboard (84) are connected, the other end of cardboard (84) is used with the internal fit of spacing hole (85).

7. A soil sampling apparatus as claimed in claim 1, wherein: the cleaning structure (21) comprises a fixing ring (211), a third spring (212) and a cleaning brush (213), wherein the fixing ring (211) is fixedly connected to the middle position of the top of the base (1), the third springs (212) are provided with a plurality of springs, one ends of the springs are fixed to two sides of an inner cavity of the fixing ring (211), and the other ends of the springs (212) are fixedly connected with one side of the cleaning brush (213).

8. The soil sampling apparatus of claim 4, wherein: one side of the movable block (94) is fixedly connected with a first electric push rod (11), and both sides of the fixed plate (2) are provided with limiting grooves (12).

9. A soil sampling apparatus as claimed in claim 5, wherein: one side fixedly connected with diaphragm (17) of shell (161) inner chamber, the bottom fixedly connected with of diaphragm (17) is a plurality of fourth springs (18), the other end of fourth spring (18) is connected with the fixed surface of screening board (163) other end, one side of riser (162) is provided with first collection box (19), the below of screening board (163) is provided with second collection box (20).

10. A soil sampling apparatus as claimed in claim 1, wherein: the left side and the right side of the base (1) are fixedly connected with second electric push rods (14), and the output ends of the second electric push rods (14) are fixedly connected with fixing convex blocks (15).