CN210243239U

CN210243239U - Soil sampling device

Info

Publication number: CN210243239U
Application number: CN201921109896.1U
Authority: CN
Inventors: Yini Cheng; 程旖旎; Riming Lu; 陆日明; Mingsheng He; 何明生; Juan Zhou; 周娟
Original assignee: Guangdong Yuefeng Environmental Protection Co Ltd
Current assignee: Guangdong Yuefeng Environmental Protection Co Ltd
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-04-03
Anticipated expiration: 2029-07-15

Abstract

The utility model relates to a soil sampling device, be connected with the inserted rod that the cylindric soil bored including one end, the inserted rod has link up the passageway, and the passageway link up cylindric soil brill and handle, and the passageway joint slides and has a gag lever post, and the outer peripheral face of inserted rod is provided with the spacing latch device of gag lever post joint, and the gag lever post is close to the one end fixedly connected with stopper that the cylindric soil bored, and the stopper slides in the cavity that the cylindric soil bored, and when latch device was spacing with the gag lever post joint, the stopper closed the feed inlet that the cylindric soil bored. Through adopting above-mentioned technical scheme, latch device and stopper are favorable to conveniently fixing the gag lever post, reduce the condition that soil got into the feed inlet simultaneously, remove the stationary state of latch device and gag lever post, and the soil of being convenient for gets into the feed inlet to gather the soil sample of appointed degree of depth, simultaneously, promote the gag lever post downwards, discharge from the feed inlet in the cavity of cylindric soil drill with soil conveniently, in order to take out soil sample, make easy and simple to handle.

Description

Soil sampling device

Technical Field

The utility model belongs to the technical field of the soil sampling technique and specifically relates to a soil sampling device is related to.

Background

Soil sampling is an important link of a soil information acquisition technology, in order to determine the abundance of soil nutrients in the whole area, a soil sample needs to be correctly taken and subjected to detection and analysis, and a statistical method is generally adopted to analyze the statistics of a sample test value so as to estimate the nutrient condition of the whole area.

At present, people often can carry out the sample operation of soil with soil drill or spade, and wherein, soil drill is that the application in the soil sampling process is comparatively extensive, and common soil drill is straight cylindric soil drill, and straight cylindric soil drill keeps away from the one end fixedly connected with inserted rod that inserts the end, and the one end fixedly connected with handle that straight cylindric soil drill was kept away from to inserted rod.

Soil sampling needs the soil of the appointed degree of depth of collection sometimes, therefore people can dig to appointed degree of depth with the spade earlier, then carry out soil sampling through the soil auger again to the soil sample of the appointed degree of depth of collection, consequently the operation of gathering appointed degree of depth soil sampling for the staff brings inconvenience, and the soil that is located straight cylindric soil auger inner chamber is difficult to take out moreover, makes the sample operation inconvenient. Therefore, there is room for improvement.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a soil sampling device has the advantage of being convenient for gather and take out different degree of depth soil sample.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a soil sampling device, includes the inserted bar of one end fixedly connected with handle, and the other end fixedly connected with cylindric soil drill of inserted bar, the inserted bar has link up the passageway along length direction, the passageway link up cylindric soil drill and handle, the passageway joint slides and has the gag lever post, the outer peripheral face of inserted bar be provided with the spacing latch device of gag lever post joint, the gag lever post is close to the one end fixedly connected with stopper of cylindric soil drill, the stopper is in slide in the cavity of cylindric soil drill, work as latch device with when the gag lever post joint is spacing, the stopper seals the feed inlet of cylindric soil drill.

Through adopting above-mentioned technical scheme, the inserted bar, gag lever post and the equal coaxial setting of cylindric boring, the inserted bar sets up with the handle is perpendicular simultaneously, and the axis distance of handle both ends to the inserted bar is unanimous, the outer peripheral face of handle is provided with the decorative pattern of reinforcing frictional force, so that the staff holds the handle tightly, and the staff is unanimous at the decurrent pressure in handle both ends, and then make the decurrent resultant force of cylindric boring downwards, and ground is to the lower terminal surface of cylindric boring of the reaction force evenly distributed, and then be convenient for cylindric boring to insert ground perpendicularly in order to gather soil sample. Meanwhile, the end face of the insertion rod along the length direction penetrates through the channel so that the limiting rod can be conveniently inserted into the channel, and can slide in the channel along the length direction of the channel; the inside arch of inner peripheral surface lower extreme of cylindric boring has the annular block, and when spout and draw-in groove just to the time, clamping device is fixed with the draw-in groove joint towards the one end of gag lever post, and then the restriction gag lever post slides along the length direction of passageway, and at this moment, the lower terminal surface of stopper and the up end butt of annular block to in the feed inlet of sealing cylindric boring below, be favorable to when the cylindric boring inserts the ground, the condition that soil got into from the feed inlet of cylindric boring. The outer peripheral face of inserting the pole is marked with the scale mark that is used for measuring the degree of depth along length direction, inserts when the cylindric soil auger to appointed degree of depth position in soil, removes the condition of latch device and gag lever post joint, during the up end of the gag lever post of the up-sliding gag lever post to the stopper and the bottom butt of cylindric soil auger to in removing the closed condition of cylindric soil auger feed inlet, thereby make things convenient for soil to get into in the cavity of cylindric soil auger, with the soil sample of gathering appointed degree of depth. When the cylindrical soil drill is taken out upwards, the limiting effect of the baffle is favorable for reducing the condition that the soil sample falls out of the cavity of the cylindrical soil drill. After the cylindric soil drill was taken out from soil, through pushing away the gag lever post downwards to be convenient for release the soil sample in the cylindric soil drill from the feed inlet, and then conveniently collect the soil sample of appointed degree of depth. Consequently, through the aforesaid setting, latch device and stopper are favorable to conveniently fixing the gag lever post, reduce the condition that soil got into the feed inlet simultaneously, remove the stationary state of latch device and gag lever post, and the soil of being convenient for gets into the feed inlet to gather the soil sample of appointed degree of depth, simultaneously, promote the gag lever post downwards, discharge from the feed inlet in the cavity of cylindric soil drill with soil conveniently, in order to take out soil sample, make easy and simple to handle.

The utility model discloses further set up to: the outer peripheral surface of the limiting rod is provided with a clamping groove, the inner peripheral surface of the inserting rod is provided with a sliding groove vertical to the axis of the inserting rod, the clamping device comprises a clamping shaft which is connected with the peripheral surface of the insertion rod in a sliding way, one end of the clamping shaft facing the limiting rod is fixedly connected with a clamping block which is clamped with the clamping groove, the clamping block slides in the sliding groove, the other end of the clamping shaft is fixedly connected with a shifting block, the shifting block is arranged by protruding the peripheral surface of the insertion rod, a spring is sleeved on the outer peripheral surface of the clamping shaft and positioned in the chute, one end of the spring is fixedly connected with the bottom end of the chute, the other end of the spring is fixedly connected with the clamping block, the spring is in a compression state, and when the clamping groove and the sliding groove are aligned, the clamping block is clamped and fixed with the clamping groove.

Through adopting above-mentioned technical scheme, the cross section of draw-in groove is right angled triangle, and the inclined plane of draw-in groove sets up towards the handle, the cross section of fixture block is right trapezoid, and the inclined plane of fixture block sets up, the cross section opening that the draw-in groove is close to fixture block one side is greater than the one end that the fixture block is close to the draw-in groove, and then be convenient for the fixture block to insert draw-in groove and draw-in groove joint, and simultaneously, through setting up the spring, utilize the compression and the characteristic that resets of spring, the spring is in compression state in the spout all the time, when through the gag lever post that slides, make draw-in groove and spout just to the time, through the extension that resets of spring, make the fixture block get into in the draw-in groove, with the fixed gag lever post of joint.

The utility model discloses further set up to: the lower terminal surface fixedly connected with awl piece of stopper, the most advanced downward setting of awl piece.

Through adopting above-mentioned technical scheme, through setting up the awl piece at the lower terminal surface of stopper, when will insert the pole and insert ground to the appointed degree of depth, the awl piece is at first with ground contact, because the area of awl piece and ground contact is less, and then the pressure that produces is great to be convenient for insert the pole and insert ground, thereby reach laborsaving effect, make convenient operation.

The utility model discloses further set up to: the inner peripheral surface of the insertion rod is provided with a first straight groove, the length direction of the first straight groove is consistent with the length direction of the insertion rod, a first protruding strip protrudes from the outer peripheral surface of the limiting rod, the first protruding strip is in clamping connection with the first straight groove to slide, and the first straight groove is used for circumferentially limiting the first protruding strip.

By adopting the technical scheme, the first straight groove and the first raised line are arranged, so that the first raised line slides in the first straight groove, and the first straight groove is used for circumferentially limiting the first raised line, thereby being beneficial to improving the guidance of the sliding motion of the insertion rod and ensuring the smooth motion; meanwhile, the clamping device is beneficial to reducing the situation that the insertion rod rotates around the axis, so that the position deviation between the clamping block and the clamping groove is large, and the clamping is difficult to limit, therefore, the clamping block and the clamping groove can be conveniently and smoothly clamped and fixed, and the operation is simple and convenient.

The utility model discloses further set up to: the conical block is a hollow conical body, a through groove is formed in the limiting rod in a penetrating mode, the through groove penetrates through the upper end face of the conical block and the limiting block, an exhaust hole is formed in the peripheral face of the conical block, and the exhaust hole is communicated with the through groove.

Through adopting above-mentioned technical scheme, through setting up the exhaust hole, and exhaust hole and logical groove to the intercommunication, and then be convenient for arrange outside logical groove with the air in the cavity of cylindric boring, in order to relieve the fixed condition of fixture block and draw-in groove joint when the pulling shifting block, then the gag lever post of upwards sliding, make the up end of stopper and the bottom butt of cylindric boring, when continuing to promote downwards to insert the pole in order to gather soil sample, the air in the cavity of cylindric boring can be arranged outside logical groove in the exhaust hole in the extrusion process, and then be favorable to reducing the gas pressure in the cylindric boring, so that collect the cavity to the cylindric boring with soil smoothly, make soil sampling operation more convenient.

The utility model discloses further set up to: the novel pedal type pedal device comprises a cylindrical base, wherein a circular groove penetrates through the upper end face of the cylindrical base, an insertion rod is connected with the circular groove in a sliding mode, and a pedal plate is arranged on the outer peripheral face of the cylindrical base.

By adopting the technical scheme, the cylindrical base is arranged to be sleeved with the cylindrical soil drill, the cylindrical base is connected with the insertion rod in a sliding manner, the insertion rod and the limiting rod can be kept perpendicular to the ground by treading the pedal plate while the cylindrical soil drill is inserted into the ground, and the insertion rod can be inserted into the ground perpendicularly; in addition, two running-boards are installed to the outer peripheral face of cylindric base, and the running-board branch is listed in the both sides of the axis of cylindric base to the staff tramples, conveniently inserts ground with the inserted bar, makes the operation more simple and convenient.

The utility model discloses further set up to: the pedal plate is hinged to the cylindrical base, a torsional spring is sleeved on the hinge shaft of the pedal plate and the hinge shaft of the cylindrical base, one end of the torsional spring is connected with the pedal plate, and the other end of the torsional spring is connected with the cylindrical base.

Through adopting above-mentioned technical scheme, through setting up the torsional spring, when the torsional spring is in natural state, because the reset function of torsional spring, the running-board upwards turns to the length direction of running-board unanimous with the length direction of cylindric base, because the length of running-board is longer, upwards turns to the vertical state with the running-board, is convenient for accomodate the running-board to practice thrift the usage space.

The utility model discloses further set up to: the inner peripheral surface of the cylindrical base, which is attached to the insertion rod, is provided with a second straight groove, a second convex strip protrudes from the outer peripheral surface of the insertion rod, the second convex strip is in sliding connection with the second straight groove, and the second straight groove is used for circumferentially limiting the second convex strip.

By adopting the technical scheme, the second straight groove and the second raised line are arranged, and the second raised line is circumferentially limited through the second straight groove, so that the guidance of the sliding motion of the second raised line is improved, and the motion of the second raised line is smoother; simultaneously, the length direction of running-board is unanimous with the length direction of handle, and the second sand grip slides with the joint of second straight flute, is favorable to reducing because of the axis rotation of cylindric base around the cylindric base causes running-board and handle dislocation for the inconvenient condition of operation, consequently, through the convenience of above-mentioned setting in order to improve the insertion cylindric soil drill.

The utility model discloses further set up to: the size of the cross section of the second straight groove is larger than the size of the shifting block and the size of the clamping shaft protruding out of the outer peripheral surface of the insertion rod.

Through adopting above-mentioned technical scheme, latch device is located the second sand grip directly over along length direction, and when inserting the pole and inserting ground to the up end of cylindric base and being close latch device, latch device can pass the position in second straight flute, and then reduces the condition that latch device and cylindric base produced the collision and interfere.

The utility model discloses further set up to: and a handle is arranged at one end of the limiting rod, which is far away from the limiting block.

Through adopting above-mentioned technical scheme, set up the handle through the one end of keeping away from the stopper at the gag lever post to the condition in order to realize the gag lever post up-and-down motion is conveniently pulled through the pulling handle, makes the operation more convenient.

To sum up, the utility model discloses following beneficial effect has:

1. the insertion rod and the conical block are arranged, so that the insertion rod can be conveniently inserted into the ground; through the arrangement of the channel, the limiting rod can conveniently slide in the channel, and the feed port of the cylindrical soil drill can be communicated and closed; the clamping device is arranged so as to limit the motion condition of the limiting rod, and the clamping and fixing state of the clamping block and the clamping groove is conveniently released by pulling the toggle outwards, so that the operation is simple and convenient;

2. by arranging the cylindrical base, the insertion rod can be vertically inserted into the ground, so that the insertion rod can be inserted into ground sampling soil in the same vertical state in the sampling process of different areas every time, the result is more accurate, and the error is reduced; the arrangement of the exhaust hole is favorable for reducing the gas pressure in the cylindrical soil drill so as to smoothly collect the soil into the cavity of the cylindrical soil drill and make the soil sampling operation more convenient;

3. the pedal plates can be turned upwards to be in a vertical state by arranging the torsion springs and the pedal plates, so that the pedal plates can be conveniently accommodated, and the use space is saved; the arrangement of the first convex strip and the first straight groove is beneficial to improving the guidance of the sliding motion of the insertion rod, so that the motion is smoother; through setting up second sand grip and second straight flute, improve the guidance quality of second sand grip sliding motion for the motion of second sand grip is more smooth and easy.

Drawings

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

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a sectional view of the present embodiment;

FIG. 4 is a partial cross-sectional view schematically illustrating the present embodiment;

FIG. 5 is an enlarged view of a portion of FIG. 4 at C;

FIG. 6 is an enlarged view of a portion of FIG. 3 at B;

fig. 7 is a schematic view of the present embodiment in a state where the footrest is contracted.

Reference numerals: 1. a cylindrical base; 11. a circular groove; 12. a second straight groove; 13. a foot pedal; 14. a torsion spring; 2. an insertion rod; 21. a second convex strip; 22. scale lines; 23. a channel; 24. a first straight groove; 3. a cylindrical earth drill; 31. a ring block; 4. a handle; 5. a limiting rod; 51. a first rib; 52. a through groove; 53. a limiting block; 54. a conical block; 541. an exhaust hole; 6. a clamping device; 61. a card slot; 62. a chute; 63. a clamping block; 64. clamping the shaft; 65. shifting blocks; 66. a spring; 7. and (4) a handle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1-2, a soil sampling device, including cylindric base 1, cylindric base 1 articulates along 1 outer peripheral face of cylindric base has two running-boards 13, and two running-boards 13 divide row are in the both sides of cylindric base 1 axis, and set up with the axis symmetry of cylindric base 1, and the articulated shaft of cylindric base 1 and running-board 13 has cup jointed torsional spring 14, the one end and the cylindric base 1 fixed connection of torsional spring 14, the other end and the running-board 13 fixed connection of torsional spring 14.

A circular groove 11 penetrates through the upper end face of the cylindrical base 1, two second straight grooves 12 are formed in the inner circumferential surface of the circular groove 11, the length direction of the second straight grooves 12 is consistent with the length direction of the cylindrical base 1, and the two second straight grooves 12 are respectively arranged on two sides of the axis of the cylindrical base 1 and are respectively aligned with the pedal plates 13 on the two sides. The circular groove 11 is connected with the inserting rod 2 in a sliding mode, the axis of the inserting rod 2 is coaxial with the axis of the cylindrical base 1, the inserting rod 2 is a hollow cylinder, two second protruding strips 21 are lifted on the outer peripheral surface of the inserting rod 2, the length direction of the second protruding strips 21 is consistent with the length direction of the inserting rod 2, the second protruding strips 21 slide in a clamping mode with a second straight groove 12, and the second straight groove 12 is used for conducting circumferential limiting on the second protruding strips 21.

The outer circumference of the insertion rod 2 is provided with scale marks 22 for measuring depth, one end of the insertion rod 2 is fixedly connected with a handle 4, the handle 4 is aligned with the second convex strip 21, and the handle 4 is perpendicular to the insertion rod 2, the handle 4 is a cylinder, the distance from the two ends of the handle 4 to the axis of the insertion rod 2 is consistent, the other end of the insertion rod 2 is fixedly connected with a cylindrical earth drill 3, the height of the cylindrical earth drill 3 is equal to the height of the inner cavity of the cylindrical base 1, the outer diameter of the cylindrical earth drill 3 is smaller than the inner diameter of the cylindrical base 1, the axis of the cylindrical earth drill 3 is coaxial with the axis of the insertion rod 2, the feeding port of the cylindrical earth drill 3 is arranged on the side opposite to the insertion rod 2, the inner circumferential surface of one end of the cylindrical earth drill 3, which is far away from the insertion rod 2, is inwards protruded with an annular block 31, a channel 23 (shown in figure 3) is penetrated through the end surface of one end of the insertion rod 2 in the length direction.

As shown in fig. 3 to 4, a limiting rod 5 is inserted into the channel 23, the length direction of the limiting rod 5 is the same as the length direction of the insertion rod 2, the limiting rod 5 slides in the channel 23 along the length direction of the channel 23, the limiting rod 5 is a hollow cylinder, one end of the limiting rod 5 facing the cylindrical earth auger 3 is fixedly connected with a limiting block 53, the limiting block 53 slides up and down in the length direction of the limiting rod 5 in the inner cavity of the cylindrical earth auger 3, the lower end surface of the limiting block 53 abuts against the upper end surface of the annular block 31, the lower end surface of the limiting block 53 is fixedly connected with a conical block 54, the diameter of the bottom circle of the conical block 54 is smaller than or equal to the diameter of the inner circumferential surface of the annular block 31, a through groove 52 penetrates through the end surface of one end of the limiting rod 5 along the length direction, the through groove 52 penetrates through the limiting block 53, the circumferential surface of the conical block 54 is provided with an exhaust hole 541, the exhaust hole 541, the handle 7 is provided to protrude from the outer peripheral surface of the grip 4.

As shown in fig. 4 to 5, two first straight grooves 24 are formed in the inner circumferential surface of the insertion rod 2, the length direction of the first straight grooves 24 is the same as the length direction of the insertion rod 2, a first protrusion 51 protrudes from the outer circumferential surface of the stopper rod 5, the length direction of the first protrusion 51 is the same as the length direction of the stopper rod 5, the first protrusion 51 slides in a snap-fit manner with the first straight grooves 24, and the first straight grooves 24 circumferentially limit the first protrusion 51.

As shown in fig. 6, a clamping groove 61 is formed on the outer peripheral surface of the limiting rod 5, the cross section of the clamping groove 61 is a right triangle, the inclined surface of the clamping groove 61 is arranged towards the handle 4, a sliding groove 62 is formed on the inner peripheral surface of the insertion rod 2, the length direction of the sliding groove 62 is perpendicular to the axis of the limiting rod 5, a clamping device 6 for clamping and fixing the limiting rod 5 is installed in the sliding groove 62, the clamping device 6 is positioned right above the second protruding strip 21, the clamping device 6 comprises a clamping shaft 64 arranged perpendicular to the axis of the limiting rod 5, the clamping shaft 64 is positioned in the sliding groove 62, one end of the clamping shaft 64 penetrates through the outer peripheral surface of the insertion rod 2, one end of the clamping shaft 64 protruding out of the outer peripheral surface of the insertion rod 2 is fixedly connected with a shifting block 65, the other end of the clamping shaft 64 is fixedly connected with a clamping block 63, the cross section of the clamping block 63 is a right trapezoid, the fixture block 63 is fixedly clamped with the fixture groove 61, the spring 66 is sleeved on the outer peripheral surface of the clamping shaft 64, one end of the spring 66 is fixedly connected with the bottom end of the sliding groove 62, the other end of the spring 66 is fixedly connected with the fixture block 63, and when the fixture block 63 is fixedly clamped with the fixture groove 61, the shifting block 65 is abutted to the outer peripheral surface of the insertion rod 2. The size of the cross section of the second straight groove 12 is larger than the whole size of the shifting block 65 and the clamping shaft 64 protruding out of the outer peripheral surface of the insertion rod 2.

The working conditions and principles of the embodiment are as follows:

the during operation, when needing to sample the soil of appointed degree of depth, at first, make gag lever post 5 slide in the passageway 23 of inserting pole 2 through pulling handle 7, it is fixed to make fixture block 63 and draw-in groove 61 joint, slide along the length direction who inserts pole 2 in passageway 23 with fixed gag lever post 5, and then make the lower terminal surface of stopper 53 and the up end butt of annular piece 31, with the feed inlet of closing cylindric soil auger 3, make simultaneously awl piece 54 protrusion in the feed inlet setting of cylindric soil auger 3.

Then the conical block 54 is inserted into the ground so that the lower end surface of the cylindrical earth auger 3 is flush with the ground, and the two pedals 13 are turned so that the pedals 13 abut against the ground, so that the worker can conveniently step on the pedals 13. Next, the worker steps on the foot pedal 13 and then inserts the insertion rod 2 and the barrel type earth auger 3 into the ground by pushing the handle 4 downward by hand.

And meanwhile, the scales on the peripheral surface of the insertion rod are observed, when the cylindrical soil drill 3 reaches a specified depth, the operation of pushing the handle 4 downwards is stopped, the shifting block 65 is operated by the handle 7 to remove the clamping and fixing condition of the clamping block 63 and the clamping groove 61, then the handle 7 is pulled upwards until the upper end surface of the limiting block 53 is abutted against the bottom end of the cavity of the cylindrical soil drill 3, and the handle 7 is stopped being pulled.

While keeping the current state of the stop lever 5, the handle 4 is pushed downwards by hand, so that the cylindrical earth auger 3 is continuously inserted into the soil to sample the soil with the specified depth, and in the process, the air in the cylindrical earth auger 3 is continuously discharged into the through groove 52 through the exhaust hole 541. After the soil is collected, the insertion rod 2 and the cylindrical soil drill 3 are pulled out upwards through the handle 4.

Then, the handle 4 is pushed downwards, so that the limiting block 53 and the conical block 54 simultaneously squeeze the soil downwards, the soil is discharged from the feeding hole of the cylindrical soil drill 3, and the operation of taking out the soil in the cylindrical soil drill 3 is more convenient.

Then, the worker stops the operation of stepping on the foot board 13, so that the foot board 13 is flipped up to a state perpendicular to the longitudinal direction of the cylindrical base 1 (see fig. 7) to save the use space. Thereby, the soil sampling operation of a designated depth and the operation of taking out the soil in the cylindrical soil drill 3 are completed.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a soil sampling device, includes inserted bar (2) of one end fixedly connected with handle (4), and the other end fixedly connected with cylindric boring auger (3) of inserted bar (2), characterized by: insert pole (2) and link up along length direction and have passageway (23), passageway (23) link up cylindric soil auger (3) and handle (4), passageway (23) joint slides and has spacing pole (5), the outer peripheral face that inserts pole (2) be provided with spacing latch device (6) of gag lever post (5) joint, gag lever post (5) are close to the one end fixedly connected with stopper (53) of cylindric soil auger (3), stopper (53) are in slide in the cavity of cylindric soil auger (3), work as latch device (6) with when gag lever post (5) joint is spacing, stopper (53) seal the feed inlet of cylindric soil auger (3).

2. The soil sampling device of claim 1, wherein: the outer peripheral surface of the limiting rod (5) is provided with a clamping groove (61), the inner peripheral surface of the insertion rod (2) is provided with a sliding groove (62) perpendicular to the axis of the insertion rod (2), the clamping device (6) comprises a clamping shaft (64), the clamping shaft (64) is in sliding connection with the outer peripheral surface of the insertion rod (2), one end, facing the limiting rod (5), of the clamping shaft (64) is fixedly connected with a clamping block (63), the clamping block (63) is clamped with the clamping groove (61), the clamping block (63) slides in the sliding groove (62), the other end of the clamping shaft (64) is fixedly connected with a shifting block (65), the shifting block (65) protrudes out the outer peripheral surface of the insertion rod (2), the outer peripheral surface of the clamping shaft (64) is sleeved with a spring (66), the spring (66) is located in the sliding groove (62), one end of the spring (66) is fixedly connected with the bottom end of the sliding groove (62), the other end of the spring (66) is fixedly connected with the clamping block (63), the spring (66) is in a compression state, and when the clamping groove (61) and the sliding groove (62) are aligned, the clamping block (63) is clamped and fixed with the clamping groove (61).

3. The soil sampling device of claim 1, wherein: the lower end face of the limiting block (53) is fixedly connected with a conical block (54), and the tip end of the conical block (54) is arranged downwards.

4. The soil sampling device of claim 1, wherein: the inner peripheral surface of the insertion rod (2) is provided with a first straight groove (24), the length direction of the first straight groove (24) is consistent with the length direction of the insertion rod (2), a first protruding strip (51) is protruded on the outer peripheral surface of the limiting rod (5), the first protruding strip (51) is in clamping sliding with the first straight groove (24), and the first straight groove (24) is used for conducting circumferential limiting on the first protruding strip (51).

5. A soil sampling device as claimed in claim 3 wherein: the conical block (54) is a hollow cone, a through groove (52) penetrates through the limiting rod (5), the through groove (52) penetrates through the upper end face of the conical block (54) and the limiting block (53), an exhaust hole (541) is formed in the peripheral face of the conical block (54), and the exhaust hole (541) is communicated with the through groove (52).

6. The soil sampling device of claim 2, wherein: the portable pedal device is characterized by comprising a cylindrical base (1), wherein a circular groove (11) penetrates through the upper end face of the cylindrical base (1), an insertion rod (2) is connected with the circular groove (11) in a sliding mode, and a pedal plate (13) is arranged on the outer peripheral face of the cylindrical base (1).

7. The soil sampling device of claim 6, wherein: the pedal (13) is hinged to the cylindrical base (1), a torsion spring (14) is sleeved on a hinged shaft of the pedal (13) and the cylindrical base (1), one end of the torsion spring (14) is connected with the pedal (13), and the other end of the torsion spring (14) is connected with the cylindrical base (1).

8. The soil sampling device of claim 6, wherein: the inner peripheral surface of the cylindrical base (1) attached to the insertion rod (2) is provided with a second straight groove (12), the outer peripheral surface of the insertion rod (2) is provided with a second convex strip (21) in a protruding mode, the second convex strip (21) is connected with the second straight groove (12) in a sliding mode, and the second straight groove (12) is used for limiting the second convex strip (21) in the circumferential direction.

9. The soil sampling device of claim 8, wherein: the size of the cross section of the second straight groove (12) is larger than the size of the shifting block (65) and the size of the protruding outer peripheral surface of the clamping shaft (64) of the insertion rod (2).

10. The soil sampling device of claim 1, wherein: and a handle (7) is arranged at one end of the limiting rod (5) far away from the limiting block (53).