CN113155519A - Soil sampling device for agricultural construction - Google Patents

Abstract

The invention relates to the technical field of agriculture, in particular to a soil sampling device for agricultural construction, which comprises a rack, a lifting seat, a lifting driving mechanism, a sampling mechanism, a drilling mechanism and a stopping mechanism, wherein the lifting seat is arranged on the rack; the lifting seat is provided with a main shaft and a rotary driving mechanism for driving the main shaft to rotate; the sampling mechanism comprises a collecting piece and an excavation cover, a collecting cavity is formed in the collecting piece, the excavation cover is arranged at the lower end of the collecting piece, and a soil inlet communicated with the interior of the excavation cover is formed in the lower end of the collecting cavity; the drilling mechanism comprises a drill bit, and the drill bit and the collecting piece are used for selecting one of the drill bit and the collecting piece to be connected with the lower end of the main shaft and can be detached relative to the main shaft; the stopping mechanism comprises a stopping piece and a stopping driving mechanism, the side surface of the collecting piece is provided with an insertion opening communicated with the inside, and the stopping driving mechanism is used for driving the stopping piece to move along the insertion opening so as to open or close the soil inlet. According to the scheme of the invention, the stop driving mechanism can drive the stop piece to close the soil inlet, so that the soil can be prevented from falling from the soil inlet when the collecting piece is driven by the main shaft to lift.

Description

Soil sampling device for agricultural construction

Technical Field

The invention relates to the technical field of agriculture, in particular to a soil sampling device for agricultural construction.

Background

Agriculture is an industry for producing food and industrial raw materials by growing plants, and in the agricultural construction process, soil sampling research on soil of a farmland is often required by using a soil sampling device.

As shown in FIG. 1, the existing soil sampling device comprises a connection frame 1, wherein four corners of the lower side of the connection frame 1 are provided with first supporting seats 2, the lower end of the inside of the connection frame 1 is provided with an opening 3, the upper side of the connection frame 1 is provided with a handle 4, the left side and the right side of the connection frame 1 are provided with connecting shafts 5, the outer side of each connecting shaft 5 is provided with a supporting frame 6, four corners of the upper side of each supporting frame 6 are provided with second supporting seats 7, the upper end of the inside of the connection frame 1 is provided with a collection cavity 9, the front side of the collection cavity 9 is provided with a sealing door 10, the lower end of the inside of the collection cavity 9 is provided with a connecting ring 11, the inside of the connecting ring 11 is provided with a screw rod 12, the upper end of the screw rod 12 is a polish rod, the inside of the screw rod 12 is provided with a connecting hole 8, the outer side of the upper end of the screw rod 12 is provided with a first bevel gear 13, the left end of the upper side of the first bevel gear 13 is provided with a second bevel gear 14, the left end of the second bevel gear 14 is provided with a first motor 16, the left end of the connecting frame 1, the outer side of the lower end of the screw rod 12 is provided with an internal thread pipe 17, the outer side of the upper end of the internal thread pipe 17 is provided with a connecting plate 18, the left side and the right side of the connecting plate 18 are provided with connecting rods 19, the outer side of each connecting rod 19 is provided with a sliding block 20, the outer side of each sliding block 20 is provided with a sliding groove 21, the lower side of the internal thread pipe 17 is provided with a connecting cover 22, the left end inside the connecting cover 22 is provided with a second motor 27, the lower side of the connecting cover 22 is provided with an excavating cover 23, four corners of the upper end of the excavating cover 23 are provided with soil discharging openings 24, the upper side of the excavating cover 23 is provided with a collecting pipe 26, the upper end of the collecting pipe 26 is arranged inside the connecting hole 8, the upper side of the excavating cover 23 is provided with a connecting pipe shaft 25, and the connecting pipe shaft 25 is connected with the second motor 27 through a belt.

The soil sampling device has at least the following defects: when soil with low friction such as moist soil or muddy soil is sampled, the soil is liable to fall from the collection pipe 26 after the bucket cover 23 is lifted up, resulting in a sampling failure.

Disclosure of Invention

In view of this, the present invention provides a soil sampling device for agricultural construction, which mainly solves the technical problems that: how to prevent the sample soil from falling after the excavating cover is lifted.

In order to achieve the purpose, the invention mainly provides the following technical scheme:

the embodiment of the invention provides a soil sampling device for agricultural construction, which comprises a rack, a lifting seat, a lifting driving mechanism, a sampling mechanism, a drilling mechanism and a stopping mechanism, wherein the lifting seat is arranged on the rack;

the lifting seat is arranged on the rack, and the lifting driving mechanism is used for driving the lifting seat to lift; the lifting seat is provided with the main shaft and a rotary driving mechanism for driving the main shaft to rotate;

the sampling mechanism comprises a collecting piece and an excavating cover, a collecting cavity is formed in the collecting piece, the excavating cover is arranged at the lower end of the collecting piece, and a soil inlet communicated with the inner part of the excavating cover is formed in the lower end of the collecting cavity; a plurality of first excavation teeth are arranged at the lower end of the side wall of the excavation cover along the circumferential direction, and a soil discharge port is formed at the upper end of the excavation cover;

the drilling mechanism comprises a drill bit, and the drill bit and the collecting piece are alternatively connected with the lower end of the main shaft and can be detached relative to the main shaft; when the drill bit is connected with the main shaft, the drill bit is used for drilling under the driving of the main shaft; when the collecting piece is connected with the main shaft, the rotating center line of the excavation cover is overlapped with the axis of the main shaft, and the collecting piece is driven by the main shaft to drive the excavation cover to rotate around the rotating center line of the collecting piece;

the stopping mechanism comprises a stopping piece and a stopping driving mechanism, a socket communicated with the inside is arranged on the side face of the collecting piece, and the stopping driving mechanism is used for driving the stopping piece to move along the socket so as to open or close the soil inlet.

Optionally, the rotary driving mechanism includes a second motor to drive the spindle to rotate by the second motor.

Optionally, the rotary driving mechanism further includes a second speed reducer, and the second motor is connected to the spindle through the second speed reducer.

Optionally, the upper end of the collecting piece is also provided with a soil outlet communicated with the collecting cavity;

the sampling mechanism further comprises a connector, and the connector is used for covering the soil outlet and is detachably connected with the collecting piece; wherein, the collecting part is also detachably connected with the main shaft through the connector.

Optionally, one end of the connector is provided with a connecting disc, the connector is covered by the connecting disc, the soil outlet is connected with the upper end of the collecting piece through a flange, and therefore the connector can be detached relative to the collecting piece.

Optionally, the connector is provided with a stud, the lower end of the main shaft is provided with a screw hole, and the stud is inserted into the screw hole and is in threaded fit with the screw hole, so that the connector can be detached relative to the main shaft.

Optionally, one end of the drill bit is provided with another stud, the lower end of the main shaft is provided with a screw hole, and the other stud is inserted into the screw hole and is in threaded fit with the screw hole, so that the drill bit can be detached relative to the main shaft.

By means of the technical scheme, the soil sampling device for agricultural construction at least has the following beneficial effects: when sample soil enters the collecting cavity from the soil inlet and reaches a set volume, the stopping driving mechanism can drive the stopping piece to close the soil inlet so as to seal the sample soil in the collecting cavity, and therefore, when the main shaft drives the collecting piece to lift, the soil falls from the soil inlet.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of a prior art soil sampling device;

FIG. 2 is a schematic structural view of a soil sampling device for agricultural construction provided by an embodiment of the present invention when a drill is installed;

fig. 3 is a schematic structural diagram of a soil sampling device for agricultural construction provided by an embodiment of the invention when a sampling mechanism is installed;

FIG. 4 is a schematic view of the soil sampling device for agricultural construction of FIG. 3 from another perspective;

FIG. 5 is a schematic view of the agricultural soil sampling device of FIG. 3 with the housing concealed;

FIG. 6 is a schematic cross-sectional view of a sampling mechanism;

FIG. 7 is a schematic view of the construction of the earthmoving cover;

FIG. 8 is an enlarged schematic view at A in FIG. 6;

FIG. 9 is an exploded schematic view of the sampling mechanism;

FIG. 10 is an assembled schematic view of the sampling mechanism;

FIG. 11 is an enlarged schematic view at B of FIG. 9;

FIG. 12 is a schematic structural view of the soil inlet closed by the two stop pieces;

reference numerals: 1. a housing; 2. a drill bit; 3. a caster wheel; 4. a sampling mechanism; 5. a frame; 6. a first motor; 7. a first decelerator; 8. a screw rod; 9. a limiting rod; 10. a lifting seat; 11. a second motor; 12. a second decelerator; 13. a main shaft; 14. a guide cylinder; 15. a guide plate; 16. a guide groove; 141. a second excavating tooth; 41. a collecting member; 42. an excavation cover; 43. a connector; 44. a drive cylinder; 45. a connecting rod; 46. a slider; 47. a stopping sheet; 48. a removable cover plate; 49. an elastic member; 410. a collection chamber; 411. a soil outlet; 412. a second chute; 413. a soil inlet; 421. a first excavating tooth; 422. a soil discharge port; 423. a first limiting chute; 424. a second limiting chute; 431. a stud; 461. a button; 471. a substrate; 472. a sheet; 473. a bump; 474. a first runner.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 2 to 4, an embodiment of the present invention provides a soil sampling device for agricultural construction, which includes a sampling mechanism 4 and a drilling mechanism, wherein the drilling mechanism includes a drill 2. The frame 5 can be provided with a casing 1, the bottom of the frame 5 is also provided with a caster wheel 3, and the caster wheel 3 is provided with a brake part. The soil sampling device for agricultural construction can move through the caster 3, and when the soil sampling device moves to a required position, the caster 3 can be locked through the brake part, so that the whole device is fixed at the current position. As shown in fig. 5, the soil sampling device for agricultural construction further includes a frame 5, a lifting base 10, a lifting drive mechanism, and a stopper mechanism. The lifting seat 10 is arranged on the frame 5, and the lifting seat 10 can lift along the frame 5. The lifting driving mechanism is used for driving the lifting base 10 to lift. In a specific application example, the lifting driving mechanism may include a screw 8, a limiting mechanism and a power mechanism. The power mechanism is used for driving the screw 8 to rotate, and the power mechanism may include a first motor 6 to drive the screw 8 to rotate through the first motor 6. Since the first motor 6 rotates at an excessively high speed, in order to reduce the rotation speed, it is preferable that the power mechanism further includes a first speed reducer 7, and the first speed reducer 7 may be a belt speed reducer, a gear speed reducer, or the like. The first motor 6 is connected with the screw rod 8 through a first speed reducer 7 so as to drive the screw rod 8 to rotate. Wherein, the both ends of lead screw 8 all pass through the bearing and connect on frame 5 to make lead screw 8 rotate relative to frame 5. The lifting seat 10 is provided with a threaded hole, and the lifting seat 10 is sleeved on the screw rod 8 through the threaded hole to be connected with the rack 5 through the screw rod 8. The limiting mechanism is used for limiting the lifting seat 10, so that the screw rod 8 drives the lifting seat 10 to lift when rotating. Preferably, the limiting mechanism may include a limiting rod 9, and the limiting rod 9 is disposed on the frame 5, for example, both ends may be fixed on the frame 5. The limiting rod 9 is parallel to the screw rod 8. The lifting seat 10 is provided with a via hole for the limiting rod 9 to pass through, and the via hole is in sliding fit with the limiting rod 9. The limiting rod 9 can limit the lifting seat 10, so that the screw rod 8 drives the lifting seat 10 to lift when rotating. Wherein, the quantity of gag lever post 9 can be more than two to improve the spacing effect to seat 10 that goes up and down. In order to make the stress on the lifting seat 10 more uniform, the number of the limiting rods 9 is preferably two, the two limiting rods 9 are symmetrically arranged, one limiting rod 9 is located on one side of the screw rod 8, and the other limiting rod 9 is located on the other side of the screw rod 8 opposite to the other side. In this example, because the both ends of lead screw 8 all pass through the bearing and connect on frame 5, for 8 single-end connections of lead screw among the prior art, and the unsettled mode of another, the mode that 8 both ends of lead screw were all connected can improve the homogeneity of atress in this example, can reduce the wearing and tearing of lead screw 8, improves life.

As shown in fig. 5, the lifting base 10 is further provided with a main shaft 13 and a rotation driving mechanism, and the main shaft 13 may be rotatably provided on the lifting base 10 by a bearing or the like. The rotary driving mechanism is used for driving the main shaft 13 to rotate. In a specific application example, the rotary driving mechanism may include a second motor 11 to drive the spindle 13 to rotate through the second motor 11. Since the rotation speed of the second motor 11 is too fast, in order to reduce the rotation speed, it is preferable that the rotation driving mechanism further includes a second speed reducer 12, and the second speed reducer 12 may be a belt speed reducer, a gear speed reducer, or the like. The second motor 11 is connected to the main shaft 13 through a second reduction gear 12.

As shown in fig. 6, the sampling mechanism 4 comprises a collecting member 41 and an excavating cover 42, wherein the collecting member 41 has a collecting cavity 410 therein, and the collecting cavity 410 is used for receiving the collected soil sample. The lower end of the collecting member 41 is provided with a cutting cover 42, and the cutting cover 42 may be fixed to the lower end of the collecting member 41, for example, by welding. The lower end of the collection chamber 410 has an inlet 413 communicating with the inside of the cutting cover 42, and the sample soil cut by the cutting cover 42 can enter the collection chamber 410 through the inlet 413. The lower end of the side wall of the excavation cover 42 is provided with a plurality of first excavation teeth 421 along the circumferential direction, and the plurality of first excavation teeth 421 are provided with cutting edges so as to reduce the excavation resistance of the excavation cover 42 and improve the excavation efficiency. The upper end of the cutting cover 42 is also provided with a soil discharge port 422 (shown in fig. 8). In this case, a part of the soil excavated by the excavation cover 42 enters the collection chamber 410 through the soil inlet 413, and the excess soil is discharged through the soil outlet 422.

Both the drilling head 2 and the collecting member 41 are intended to be alternatively connected to the lower end of the main shaft 13 and are both detachable with respect to the main shaft 13. When the drill bit 2 is connected with the main shaft 13, the drill bit 2 is used for drilling under the driving of the main shaft 13; when the collecting piece 41 is connected with the main shaft 13, the rotation center line of the excavation cover 42 is overlapped with the axis of the main shaft 13, and the collecting piece 41 is driven by the main shaft 13 to drive the excavation cover 42 to rotate around the rotation center line of the collecting piece 41. The drill bit 2 and the collecting piece 41 are used in cooperation, specifically, during sampling, the drill bit 2 is connected to the lower end of the main shaft 13, and the main shaft 13 drives the drill bit 2 to rotate so as to drill a hole in target soil; when the drill bit 2 is drilled to the set depth, the drill bit 2 is taken down from the lower end of the main shaft 13, the collecting piece 41 is installed at the lower end of the main shaft 13, the main shaft 13 drives the soil excavating cover 42 at the lower end of the collecting piece 41 to rotate, the soil excavating cover 42 excavates the soil, part of the soil is conveyed into the collecting cavity 410 from the soil inlet 413, and other surplus soil is discharged from the soil outlet 422.

As shown in fig. 6, the stopping mechanism may comprise a stopping sheet 47 and a stopping driving mechanism, and the side surface of the collecting member 41 is provided with a socket communicated with the inside. The stopper driving mechanism is used for driving the stopper piece 47 to move along the insertion opening so as to open or close the soil inlet 413. Specifically, after the sample soil enters the collection chamber 410 from the soil inlet 413 and reaches a set volume, the stop driving mechanism drives the stop piece 47 to close the soil inlet 413 so as to seal the sample soil in the collection chamber 410, thereby preventing the soil from falling from the soil inlet 413 when the main shaft 13 drives the collection member 41 to lift. After the main shaft 13 drives the collecting member 41 to lift to the set position, the stopping driving mechanism drives the stopping sheet 47 to open the soil inlet 413, so that the sample soil falls into the prepared sample container.

In a specific application example, as shown in fig. 9, the upper end of the collecting member 41 may be further provided with a soil outlet 411 communicating with the collecting cavity 410. The collector 41 may have a cylindrical shape, and the soil outlet 411 is located at the upper end of the collector 41, and the soil inlet 413 is located at the lower end of the collector 41. As shown in fig. 9 and 10, the sampling mechanism 4 further includes a connector 43, the connector 43 is used for covering the soil outlet 411 and detachably connected to the collecting member 41, for example, one end of the connector 43 may have a connecting disc, the connector 43 covers the soil outlet 411 through the connecting disc and is flange-connected to the upper end of the collecting member 41, so that the connector 43 can be detached from the collecting member 41. The collecting element 41 is also detachably connected with the main shaft 13 through a connector 43, the connector 43 is provided with a stud 431, the lower end of the main shaft 13 is provided with a screw hole, and the stud 431 is inserted into the screw hole and is in threaded fit with the screw hole, so that the connector 43 can be detached relative to the main shaft 13.

In the above example, since the connection head 43 is detachable with respect to the upper end of the collection member 41, the soil outlet 411 may be opened when the connection head 43 is detached from the upper end of the collection member 41, so as to facilitate pouring of the sample soil from the soil outlet 411. And when the sample soil adheres to the side wall of the collection chamber 410, a tool may be used to push the soil from one side of the collection chamber 410, such as the side of the soil inlet 413, so that the soil is completely discharged from the soil outlet 411. In addition, because both ends of the collecting member 41 are open, the interior of the collecting member 41 is also conveniently cleaned, so that the soil adhered in the collecting cavity 410 is prevented from polluting the next collected sample.

In order to connect the drill 2 to the lower end of the main shaft 13, another stud may be provided at one end of the drill 2, and the other stud may be integrally formed on the drill 2. The lower end of the main shaft 13 is provided with a screw hole. The other stud is inserted into the screw hole and is in threaded fit with the screw hole, so that the drill bit 2 can be detached relative to the main shaft 13.

In order to reduce the excavation resistance of the excavation cover 42, it is preferable that the inside of the excavation cover 42 is further provided with a guide structure for transferring a part of soil in the excavation cover 42 into the collection chamber 410 and transferring the other soil into the soil discharge port 422. In this example, the soil excavated by the excavation cover 42 can be quickly and smoothly discharged from the excavation cover 42 with the help of the guide structure, so that the accumulation of the soil in the excavation cover 42 is reduced, and the soil which is not discharged in time is prevented from obstructing the downward movement of the excavation cover 42, thereby affecting the excavation efficiency of the excavation cover 42.

As shown in FIG. 6, the aforementioned guide structure may include a guide cylinder 14, the guide cylinder 14 being fixed to the top wall of the cutting cover 42 and having an upper end sealingly engaged with the top wall of the cutting cover 42. The upper end of the guide cylinder 14 may be welded seamlessly to the top wall of the earthmoving cover 42. The upper end opening of the guide cylinder 14 communicates with the soil inlet 413 to transfer a part of the soil in the cutting cover 42 to the collection chamber 410. The guide cylinder 14 may be a straight-bar cylinder, the excavation cover 42 may drive the guide cylinder 14 to move downward when excavating soil, the guide cylinder 14 covers part of soil, more sample soil may be collected when the guide cylinder 14 continuously moves downward, and the sample soil enters the collection cavity 410 along the guide cylinder 14.

In order to reduce the excavation resistance, preferably, as shown in fig. 7, the lower end of the guide cylinder 14 may be provided with a plurality of second excavating teeth 141 along the circumferential direction, the plurality of second excavating teeth 141 may each have a blade to reduce the resistance of the guide cylinder 14 descending, and the guide cylinder 14 may excavate together with the excavating cover 42 and direct the excavated sample soil into the collection chamber 410.

In order to further improve the excavation efficiency, it is preferable that the lower end of the guide cylinder 14 and the lower end of the excavation cover 42 have the same height as each other as shown in fig. 6, so that the guide cylinder 14 and the excavation cover 42 are engaged with each other to simultaneously excavate earth when the ground is leveled.

In order to achieve the effect that the guiding structure can convey other soil besides the sample soil to the soil discharge port 422, as shown in fig. 6 and 7, the guiding structure may further include a spiral guiding plate 15, the guiding plate 15 is fixedly sleeved on the guiding cylinder 14, for example, the inner edge of the guiding plate 15 may be welded on the guiding cylinder 14. A spiral guide groove 16 is formed between the guide plate 15 and the guide cylinder 14. The soil discharge port 422 is provided on the top wall of the cutting cover 42 and communicates with the upper end of the guide groove 16, so that when the cutting cover 42 cuts soil, the soil in the guide cylinder 14 can be introduced into the collection chamber 410 as sample soil, and the soil between the side wall of the cutting cover 42 and the guide cylinder 14 can be discharged from the guide groove 16 to the soil discharge port 422.

In order to enhance the soil guiding effect of the guide plate 15, it is preferable that the lower end of the guide plate 15 has a blade to reduce the resistance of the soil entering the guide groove 16. The edge of the guide plate 15 on the side facing away from the guide cylinder 14 is fixed to the side wall of the guide housing in a sealing manner, for example, by gluing with glue or the like. Because the inner side of the guide plate 15 is fixed with the guide cylinder 14 in a sealing way and the outer side is fixed with the guide cover in a sealing way, the guide groove 16 can form a semi-closed structure with only two ends open, so that the soil between the guide cylinder 14 and the side wall of the guide cover can be discharged from the soil discharge port 422 along the guide groove 16.

Here, it should be noted that: as shown in fig. 6, in order not to affect the excavation of the excavation cover 42, the stopper piece 47 and the stopper driving mechanism should be disposed on the back of the excavation cover 42, and the top wall of the excavation cover 42 may provide a shield for the stopper piece 47 and the stopper driving mechanism during the excavation. While the diameter of the cutting cover 42 should not be too large in order to reduce the volume of the cutting cover 42, it is preferable to have two such sockets, one on one side of the collecting member 41 and the other on the opposite side of the collecting member 41. The number of the stop pieces 47 is equal to that of the sockets, and the stop pieces 47 correspond to one another, wherein one stop piece 47 is used for opening or closing one half of the soil inlet 413, and the other stop piece 47 is used for opening or closing the other half of the soil inlet 413. The two stop pieces 47 cooperate with each other to open or close the entire soil inlet 413.

In order to further reduce the volume of the excavator shield 42 and further reduce the diameter of the excavator shield 42, it is preferable that the at least one stopping piece 47 is a telescopic piece, as shown in fig. 8, the telescopic piece includes a base 471 and a plate 472, the base 471 is hollow and has an opening at one end, and the plate 472 is connected with the base 471 and can be telescopic relative to the base 471 along the opening. When the stopping piece 47 opens the soil inlet 413, the plate 472 retracts into the base 471, so that the whole width of the stopping piece 47 is small, the space in the diameter direction of the excavation cover 42 can be saved, and the diameter of the excavation cover 42 can be further reduced. In order to minimize the volume of the shovel housing 42, it is preferable that the two stopper pieces 47 be both telescopic pieces.

For convenience of processing, the two stop pieces 47 may preferably have the same structure.

Since the number of the stopping pieces 47 is two and each stopping piece 47 is used to open or close half of the soil inlet 413, in order to facilitate the stopping driving mechanism to control the movement of the stopping piece 47, it is preferable that, as shown in fig. 11, the side surface of the base 471 of the stopping piece 47 has a first sliding groove 474 communicating with the inside, the plate 472 is provided with a projection 473, and the projection 473 can be integrally formed on the plate 472. The protrusion 473 extends into the first sliding groove 474 and is slidably engaged with the first sliding groove 474, and the protrusion 473 can move along the first sliding groove 474 to drive the blade 472 to extend or retract into the base 471. The stop driving mechanism is connected to the protrusion 473, so that the protrusion 473 moves the stop piece 47. Specifically, as shown in fig. 12, the protrusion 473 is configured to drive the plate 472 to extend out of the first sliding groove 474 when being driven to move to one side of the first sliding groove 474 in the first direction, and continue to drive the base 471 to move to the first position in the first direction, so that the base 471 and the extended plate 472 cooperate to close one half of the soil inlet 413. As shown in fig. 8, the protrusion 473 is further configured to drive the plate 472 to retract into the base 471 when being driven to move to the other side of the first sliding groove 474 in the second direction, and continue to drive the base 471 to move to the second position in the second direction, so that the base 471 and the retracted plate 472 cooperate to open a half of the soil inlet 413. The first direction is opposite to the second direction, and both directions are parallel to the extending direction of the first sliding groove 474. In this example, the protrusion 473 moves to one side of the first sliding groove 474 to abut against the side of the first sliding groove 474, and when the protrusion 473 continues to be driven to move in the first direction, the protrusion 473 can drive the blade 472 and the base 471 to move together to close the half of the soil inlet 413. Similarly, the protrusion 473 moves to the other side of the first sliding groove 474 to abut against the other side of the first sliding groove 474, and when the protrusion 473 moves in the second direction, the protrusion 473 drives the plate 472 and the base 471 to move together to open the half of the soil inlet 413.

In order to improve the moving accuracy of the protrusion 473, as shown in fig. 11, the side surface of the collecting member 41 may be provided with a second sliding slot 412 communicating with the inside, and the protrusion 473 is used for driving the base 471 to move to the first position or the second position along the second sliding slot 412. Although the movement accuracy of the projection 473 can be improved by the second slide groove 412, the sample soil inside the collection chamber 410 is easy to leak from the second slide groove 412, and in order to prevent this, the movable cover plate 48 and the elastic member 49 can be provided on the side surface of the collection member 41. The elastic member 49 may be a spring or a flexible plastic. The elastic member 49 is used to provide a force for moving the movable cover 48 in the second direction, so that the movable cover 48 closes the second sliding slot 412. The protrusion 473 is used to abut against the movable cover 48 and push the movable cover 48 to move in the same direction when moving along the second sliding slot 412 in the first direction. In this example, the removable cover 48 may close the second chute 412 under the action of the resilient member 49 to prevent the sample soil within the collection chamber 410 from leaking. At the same time, the movable cover plate 48 is retractable by the elastic member 49, so that the movable cover plate 48 does not obstruct the movement of the protrusion 473.

In order to improve the movement accuracy of the base 471, as shown in fig. 11, the excavator hood 42 may be provided with a first limiting slide groove 423, and the base 471 is preferably configured to move to the first position and the second position along the first limiting slide groove 423.

In order to perform the function of the aforementioned stopper driving mechanism, which may include a driving cylinder 44, a link 45, and a slider 46, as shown in fig. 9, the stopper driving mechanism may drive the cam 473 to move. As shown in fig. 11, the stop driving mechanism is connected to the protrusion 473 through the sliding block 46, for example, the sliding block 46 may be provided with a button 461, the protrusion 473 is provided with a positioning hole, and the button 461 is inserted into the positioning hole by being pressed to connect the sliding block 46 and the protrusion 473. Wherein, one end of the connecting rod 45 is hinged with the output end of the driving cylinder 44, and the other end is hinged with the sliding block 46. The driving cylinder 44 drives the slider 46 through the link 45, so that the slider 46 drives the cam 473 to move. In this example, when the driving cylinder 44 extends and contracts, the connecting rod 45 can drive the sliding block to move linearly, and the sliding block 473 can drive the projection 473 to move in the first direction or the second direction.

In order to improve the movement accuracy of the sliding block 46, it is preferable that, as shown in fig. 10, the aforementioned excavator shield 42 is provided with a second limiting sliding groove 424, and the sliding block 46 is slidably engaged with the second limiting sliding groove 424 to move the protrusion 473 along the second limiting sliding groove 424.

The working principle and preferred embodiments of the present invention are described below.

The invention aims to design a soil sampling device for agricultural construction, which comprises a drilling mechanism and a sampling mechanism 4. The drilling mechanism comprises a drill bit 2, the sampling mechanism 4 comprises a collecting piece 41, and either the drill bit 2 or the collecting piece 41 is connected with the main shaft 13 to rotate under the driving of the main shaft 13. When the drill bit 2 is connected with the main shaft 13, the drill bit 2 can drill under the driving of the main shaft 13; after drilling to a set depth, the drill bit 2 can be removed and the upper collecting member 41 replaced. An excavating cover 42 is fixed at the lower end of the collecting member 41, when the main shaft 13 rotates, the excavating cover 42 can be driven by the collecting member 41 to rotate, and the excavating cover 42 can convey excavated sample soil into the collecting cavity 410 through the soil inlet 413. When a sufficient amount of sample soil is collected, the stop driving mechanism can drive the stop piece 47 to close the soil inlet 413, so as to prevent the soil from leaking from the collection chamber 410 when the main shaft 13 drives the collection member 41 to lift.

The soil sampling device for agricultural construction of the present invention further comprises a lifting base 10 and a lifting drive mechanism, and the main shaft 13 is mounted on the lifting base 10 through a bearing. The lifting driving mechanism comprises a screw rod 8, a limiting mechanism and a power mechanism, the power mechanism comprises a first motor 6, and the first motor 6 is connected with the screw rod 8 through a first speed reducer 7 to drive the screw rod 8 to rotate. Both ends of the screw rod 8 are mounted on the frame 5 through bearings, the limiting mechanism comprises a limiting rod 9 fixed on the frame 5, the limiting rod 9 penetrates through the lifting seat 10, and when the first motor 6 drives the screw rod 8 to rotate, the screw rod 8 drives the lifting seat 10 to lift. Because the two ends of the screw rod 8 are connected to the frame 5 through the bearings, compared with the mode that the screw rod 8 is connected with a single end and the other end is suspended in the air in the prior art, the mode that the two ends of the screw rod 8 are connected can improve the uniformity of stress, reduce the abrasion of the screw rod 8 and prolong the service life.

The soil sampling device for agricultural construction is characterized in that a guide structure is further arranged in the excavation cover 42 and comprises a guide cylinder 14 and a guide plate 15, the upper end of the guide cylinder 14 is welded and fixed on the top wall of the excavation cover 42, and the upper end of the guide cylinder is in sealing fit with the top wall of the excavation cover 42. The upper end opening of the guide cylinder 14 communicates with the soil inlet 413 to transfer a part of the soil in the cutting cover 42 to the collection chamber 410. The guide plate 15 is spiral, the guide plate 15 is fixedly sleeved on the guide cylinder 14, and the inner side edge of the guide plate 15 is welded with the guide cylinder 14. The outer edges of the guide plate 15 may be bonded to the side walls of the guide housing. The side wall of the guide cover, the guide plate 15 and the guide cylinder 14 cooperate to form a spiral guide groove 16. The guide groove 16 is a semi-closed structure with only two open ends, and the upper end of the guide groove 16 is communicated with the soil discharge port 422 so as to guide all the soil between the side wall of the guide cover and the guide cylinder 14 to the soil discharge port 422.

Here, it should be noted that: in the case of no conflict, a person skilled in the art may combine the related technical features in the above examples according to actual situations to achieve corresponding technical effects, and details of various combining situations are not described herein.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (7)

1. A soil sampling device for agricultural construction is characterized by comprising a rack (5), a lifting seat (10), a lifting driving mechanism, a sampling mechanism (4), a drilling mechanism and a stopping mechanism;

the lifting seat (10) is arranged on the rack (5), and the lifting driving mechanism is used for driving the lifting seat (10) to lift; the lifting seat (10) is provided with the main shaft (13) and a rotary driving mechanism for driving the main shaft (13) to rotate;

the sampling mechanism (4) comprises a collecting piece (41) and an excavating cover (42), a collecting cavity (410) is formed in the collecting piece (41), the excavating cover (42) is arranged at the lower end of the collecting piece (41), and a soil inlet (413) communicated with the inner part of the excavating cover (42) is formed in the lower end of the collecting cavity (410); a plurality of first digging teeth (421) are arranged at the lower end of the side wall of the digging cover (42) along the circumferential direction, and a soil discharging opening (422) is arranged at the upper end of the digging cover (42);

the drilling mechanism comprises a drill bit (2), the drill bit (2) and the collecting piece (41) are used for alternatively connecting with the lower end of the main shaft (13) and can be detached relative to the main shaft (13); when the drill bit (2) is connected with the main shaft (13), the drill bit (2) is used for drilling under the driving of the main shaft (13); when the collecting piece (41) is connected with the main shaft (13), the rotating center line of the excavating cover (42) is superposed with the axis of the main shaft (13), and the collecting piece (41) is used for driving the excavating cover (42) to rotate around the rotating center line of the collecting piece under the driving of the main shaft (13);

the stopping mechanism comprises a stopping sheet (47) and a stopping driving mechanism, a socket communicated with the inside is arranged on the side surface of the collecting piece (41), and the stopping driving mechanism is used for driving the stopping sheet (47) to move along the socket so as to open or close the soil inlet (413).

2. The soil sampling device for agricultural construction according to claim 1,

the rotary driving mechanism comprises a second motor (11) so as to drive the spindle (13) to rotate through the second motor (11).

3. The soil sampling device for agricultural construction according to claim 2,

the rotary driving mechanism further comprises a second speed reducer (12), and the second motor (11) is connected with the spindle (13) through the second speed reducer (12).

4. The soil sampling device for agricultural construction according to any one of claims 1 to 3,

the upper end of the collecting piece (41) is also provided with a soil outlet (411) communicated with the collecting cavity (410);

the sampling mechanism (4) further comprises a connector (43), and the connector (43) is used for covering the soil outlet (411) and is detachably connected with the collecting piece (41); wherein, the collecting piece (41) is also detachably connected with the main shaft (13) through the connecting head (43).

5. The soil sampling device for agricultural construction according to claim 4,

the one end of connector (43) has the connection pad, connector (43) pass through the connection pad lid closes unearthing mouth (411) and pass through flange joint with the upper end of collecting piece (41) to make connector (43) collect piece (41) dismantlement relatively.

6. The soil sampling device for agricultural construction according to claim 4,

the connecting head (43) is provided with a stud (431), the lower end of the main shaft (13) is provided with a screw hole, and the stud (431) is inserted into the screw hole and is in threaded fit with the screw hole, so that the connecting head (43) can be detached relative to the main shaft (13).

7. The soil sampling device for agricultural construction according to any one of claims 1 to 3, 5,

one end of the drill bit (2) is provided with another stud, the lower end of the main shaft (13) is provided with a screw hole, and the other stud is inserted into the screw hole and is in threaded fit with the screw hole, so that the drill bit (2) can be detached relative to the main shaft (13).

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