CN218330684U - Sampling device for soil moisture content determination - Google Patents

Abstract

The utility model belongs to the technical field of the soil sampling, especially, relate to a sampling device for soil moisture content survey, the on-line screen storage device comprises a base, the lower surface of base runs through and has seted up the through-hole, the upper surface of base all runs through all around and has seted up the jack, still includes: the sampling device comprises a base, a sleeve, a sampling cylinder and a clamping mechanism, wherein the sleeve is fixedly welded on the upper surface of the base, the surfaces of two sides of the sleeve are fixedly welded with handheld handles, the handheld handles on two sides are symmetrically arranged, the surfaces of two sides of the sleeve are respectively provided with a pressing groove in a penetrating manner, the pressing grooves on two sides are respectively positioned under the handheld handles on two sides, the insides of the pressing grooves on two sides are respectively clamped with a pressing plate in a sliding manner, and the sampling cylinder is fixedly welded between the two pressing plates; wherein, the sleeve activity cup joints in the outside of cartridge, for prior art, the utility model discloses reached and improved sampling efficiency, reduced the sampling degree of difficulty and be convenient for measure the effect of the concrete degree of depth of sampling.

Description

Sampling device for soil moisture content determination

Technical Field

The utility model belongs to the technical field of the soil sampling, especially, relate to a sampling device is used in soil moisture content survey.

Background

The soil moisture refers to the condition of water content in soil of a crop plough layer, the soil moisture refers to the humidity of the soil, the soil moisture refers to the condition of the humidity of the soil, the humidity of the soil is affected by conditions such as atmosphere, soil quality, vegetation and the like, and the soil moisture has reference value in irrigation, so that the soil moisture data detection needs to be carried out on the soil moisture by collecting the soil in order to scientifically plant the crops.

Chinese patent with application number CN201821507328.2 discloses a sampling device for soil moisture content data perception measurement, which comprises a cross rod, wherein the top of the round tube is installed in the threaded hole through threaded connection, the middle part of the cross rod is vertically provided with a threaded rod through threaded connection, the lower end of the threaded rod is provided with conical stainless steel, the conical stainless steel is arranged downwards by a tip, the outer wall of the top of the conical stainless steel is abutted to the inner wall of the round tube, the outer wall of the threaded rod is adhered with an annular rubber layer, the outer wall of the annular rubber layer is abutted to the inner wall of the round tube, and the annular rubber layer is positioned above the conical stainless steel; this sampling device is used in soil moisture content data perception survey makes things convenient for the dismouting, makes things convenient for the pipe to insert in soil, and the convenience is taken a sample to the soil of the different degree of depth, is favorable to inhaling the inside bottom of pipe with soil, and the effectual soil that prevents simultaneously slips from the pipe. The device only relies on hand strength to insert and need consume a large amount of strength owing to lack foot and step on the mechanism, has increased the degree of difficulty of sampling to some less people of strength to meet the great position of soil hardness and also can increase the trouble of inserting, the device lacks observation subassembly in addition, makes the user be difficult to the accurate soil to the different degree of depth and samples, influences the accuracy that later stage detected, is necessary to make the improvement from this.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the technical problem who exists to the aforesaid, provide a sampling device for soil moisture content survey, reached and improved sampling efficiency, reduce the sampling degree of difficulty and be convenient for measure the effect of the concrete degree of depth of sampling.

In view of this, the utility model provides a sampling device for soil moisture content survey, the on-line screen storage device comprises a base, the lower surface of base runs through and has seted up the through-hole, the upper surface of base all runs through all around and has seted up the jack, still includes:

the sleeve is fixedly welded on the upper surface of the base, the surfaces of two sides of the sleeve are fixedly welded with the handheld handles, the handheld handles on two sides are symmetrically arranged, the surfaces of two sides of the sleeve are respectively provided with a lower pressing groove in a penetrating mode, the lower pressing grooves on two sides are respectively positioned under the handheld handles on two sides, lower pressing plates are slidably clamped inside the lower pressing grooves on two sides, and a sampling cylinder is fixedly welded between the two lower pressing plates;

the sleeve is movably sleeved outside the sampling cylinder, the sleeve is located right above the through hole, and the inside of the sleeve is communicated with the inside of the through hole.

In this technical scheme, step on through the foot and can drive the cartridge on the holding down plate and move down to be convenient for the cartridge and accomplish the sampling in inserting soil, because the foot is stepped on and to be utilized self gravity to increase the dynamics of pushing down, reduce the difficulty that only relies on manual inserting, improve the efficiency of sampling.

In the above technical solution, further, the method further includes:

the soil loosening assembly comprises a screw rod, the bottom end of the screw rod sequentially penetrates through the upper surfaces of the sleeve and the sampling cylinder, a drill bit is fixedly installed at the bottom end of the screw rod, and a rotating wheel disc is fixedly installed at the top end of the screw rod;

the screw rod is movably inserted into the sleeve, the screw rod is in threaded connection with the sampling cylinder, and the diameter of the top end of the drill bit is the same as the diameter of the inner wall of the sampling cylinder.

In this technical scheme, can drive the screw rod through rotating the rotary wheel dish and rotate, the screw rod rotates and can drive the drill bit and move down, because the drill bit bottom is sharp-pointed therefore be convenient for more insert soil in not hard up, the later stage cartridge's of being convenient for insert reduces cartridge male difficulty degree, improves the efficiency of sampling.

In the above technical solution, further, the method further includes:

the observation assembly comprises two indication blocks and two scale marks, the two indication blocks are fixedly arranged on the surface of one side of each of the two lower pressing plates, and the two scale marks are respectively arranged on one side of each of the two lower pressing grooves;

the two indicating blocks and the two scale marks are matched for use, and the numerical values of the two scale marks are sequentially increased from top to bottom.

In this technical scheme, because instruct the piece to link together through holding down plate and sampling barrel, therefore also can make the instruction piece remove thereupon when the foot is stepped on down the holding down plate and is moved sampling barrel and move, instruct the piece removal and then indicate the position on the scale mark can change, instruct the distance that the piece moved down this moment promptly for the male degree of depth, the accurate sampling depth of observing soil of person of facilitating the use improves the accuracy that later stage detected.

In the above technical solution, further, the method further includes:

the base, the upper surface of base runs through and has seted up the rotation groove, the connecting hole has all been seted up to the both sides of rotating the inslot portion, the wheel carrier is installed through the pivot rotation in the inside in rotation groove, the gyro wheel is installed through the bull stick rotation in the inboard of wheel carrier, the surface of wheel carrier both sides all runs through and has seted up the fixed orifices.

In this technical scheme, through install the gyro wheel in one side at the base to convenient to use person's drive arrangement wholly removes, avoids the trouble that continuous transport brought, has reduced user's work burden, has improved the practicality of device.

In the above technical solution, further, the method further includes:

the limiting assembly comprises four mounting boxes, the four mounting boxes are fixedly welded around the upper surface of the base respectively, positioning rods penetrate through the upper surfaces of the four mounting boxes and are movably inserted, a pedal is fixedly welded at the top end of each positioning rod, limiting discs are fixedly welded on the surfaces of the four positioning rods, each limiting disc is correspondingly positioned in each mounting box, and a first spring is fixedly connected between the lower surface of each limiting disc and the upper surface of the base;

and the four mounting boxes are respectively positioned right above the four jacks and communicated with the interiors of the jacks.

In this technical scheme, step on the pedal through the foot and drive the locating lever and move down and insert the underground to an extrusion spring shrink can be fixed the base at appointed sampling position, improves the accuracy of sampling, avoids removing at sampling in-process base and makes the sampling position change the detection that influences the later stage.

In the above technical solution, further, the method further includes:

the lap joint subassembly, the lap joint subassembly includes the magnet, magnet fixed mounting is on the sleeve outside surface, the outer surface actuation of magnet has the overlap joint board, the overlap joint board is located both sides the below of holding down plate and with the lower surface contact of holding down plate be connected, the fixed surface that the magnet one side was kept away from to the overlap joint board installs the pull ring.

In this technical scheme, through being in the same place lap-joint plate and magnet actuation to utilize the lap-joint plate to prop up the holding down plate of both sides, avoid removing going on that in-process cartridge gliding influence removed, utilize the lap-joint plate to fix the cartridge in telescopic inside in addition, avoid causing the damage to it when not using.

In the above technical solution, further, the method further includes:

the surface of one side of the base is provided with a sliding chute, the interior of the sliding chute is communicated with the interior of one connecting hole, a push-pull block is connected in a sliding and clamping mode in the sliding chute, a second spring is fixedly installed between the surface of one side, away from the connecting hole, of the push-pull block and the surface of the interior of the sliding chute, and a fixed inserting plate is fixedly connected to the surface of one side, away from the second spring, of the push-pull block;

the fixed inserting plate is inserted and connected with the fixed hole and the connecting hole.

In this technical scheme, can extrude the shrink of spring two through pulling push-and-pull piece, thereby the shrink of spring two can make fixed picture peg remove with the inserting of connecting hole and fixed orifices and close and loosen, be convenient for rotate the wheel carrier to accomplish packing up and releasing the gyro wheel.

The beneficial effects of the utility model are that:

1. the sampling cylinder can be driven to move downwards by stepping on the lower pressing plate, so that the sampling cylinder can be conveniently inserted into soil to finish sampling, the stepping can increase the pressing force by utilizing the self gravity, the difficulty of only depending on manual insertion is reduced, and the sampling efficiency is improved;

2. the rotating wheel disc is rotated to drive the screw to rotate, the screw rotates to drive the drill bit to move downwards, the bottom of the drill bit is sharp, so that the drill bit can be inserted into soil more conveniently to loosen the soil, a sampling cylinder can be inserted conveniently in the later period, the difficulty degree of inserting the sampling cylinder is reduced, and the sampling efficiency is improved;

3. the indicating block is connected with the sampling cylinder through the lower pressing plate, so that the indicating block can move along with the sampling cylinder when the pressing plate is stepped by a foot to move the sampling cylinder to move downwards, the position of the indicating block on the scale mark can be changed when the indicating block moves, and the distance of the downward movement of the indicating block is the inserting depth, so that a user can conveniently and accurately observe the sampling depth of soil, and the accuracy of later detection is improved;

4. through installing the gyro wheel in one side of base to convenient to use person's drive device wholly removes, avoids the trouble that continuous transport brought, has reduced user's work burden, has improved the practicality of device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic view of a first three-dimensional structure of the present invention.

Fig. 2 is a schematic diagram of a second three-dimensional structure of the present invention.

Fig. 3 is a third schematic perspective view of the present invention.

Fig. 4 is a schematic sectional view of the present invention.

Fig. 5 is an enlarged schematic view of part a of the present invention.

The labels in the figures are:

the device comprises a base 1, a sleeve 2, a sampling cartridge 3, a soil loosening assembly 4, a screw 401, a rotating wheel disc 402, a drill bit 403, a lower pressing plate 5, a limiting assembly 6, a mounting box 601, a positioning rod 602, a pedal 603, a first spring 604, an overlapping assembly 7, an overlapping plate 701, a magnet 702, a pull ring 703, an observation assembly 8, an indication block 801, a scale mark 802, a handheld handle 9, a lower pressing groove 10, a rotating groove 11, a jack 12, a through hole 13, a sliding groove 14, a push-pull block 15, a second spring 16, a wheel frame 17, a roller 18, a fixed inserting plate 19 and a fixed hole 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present application, it is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. For convenience of description, the dimensions of the various features shown in the drawings are not necessarily drawn to scale. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

It should be noted that in the description of the present application, the orientation or positional relationship indicated by the terms such as "front, back, up, down, left, right", "lateral, vertical, horizontal" and "top, bottom" and the like are generally based on the orientation or positional relationship shown in the drawings for convenience of description and simplicity of description only, and in the case of not making a reverse description, these orientation terms do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

It should be noted that, in the present application, 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 of 8230, and" comprising 8230does not exclude the presence of additional like elements in a process, method, article, or apparatus comprising the element. Further, it should be noted that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions recited, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Example 1:

the embodiment of the application provides a sampling device for soil moisture content survey, including base 1, base 1's lower surface runs through and has seted up through-hole 13, and base 1's upper surface all runs through all around and has seted up jack 12, still includes: the sampling device comprises a sleeve 2, wherein the sleeve 2 is fixedly welded on the upper surface of a base 1, hand-held handles 9 are fixedly welded on the surfaces of two sides of the sleeve 2, the hand-held handles 9 on the two sides are symmetrically arranged, lower pressing grooves 10 are formed in the surfaces of two sides of the sleeve 2 in a penetrating mode, the lower pressing grooves 10 on the two sides are respectively located right below the hand-held handles 9 on the two sides, lower pressing plates 5 are slidably clamped inside the lower pressing grooves 10 on the two sides, and a sampling cylinder 3 is fixedly welded between the two lower pressing plates 5;

wherein, sleeve 2 activity cup joints in the outside of cartridge 3, and sleeve 2 is located through-hole 13 directly over, and the inside of sleeve 2 is linked together with the inside of through-hole 13.

In this embodiment, can drive the cartridge through the foot is stepped on the holding down plate and move down to be convenient for the cartridge and accomplish the sampling in inserting soil, because the foot is stepped on and to be utilized self gravity to increase the dynamics of pushing down, reduce the difficulty that only relies on manual insertion, improve the efficiency of sampling.

Example 2:

the present embodiment provides a sampling device for soil moisture content determination, which, in addition to the technical solutions of the above embodiments, has the following technical features, and further includes: the soil loosening assembly 4 comprises a screw 401, the bottom end of the screw 401 sequentially penetrates through the upper surfaces of the sleeve 2 and the sampling cylinder 3, a drill bit 403 is fixedly installed at the bottom end of the screw 401, and a rotating wheel disc 402 is fixedly installed at the top end of the screw 401;

wherein, screw rod 401 and sleeve 2 activity grafting, screw rod 401 and sampling barrel 3 threaded connection, the top diameter of drill bit 403 is the same with the inner wall diameter of sampling barrel 3.

In this embodiment, can drive the screw rod through rotating the rotary wheel dish and rotate, the screw rod rotates and can drive the drill bit and move down, therefore it is not hard up to soil to be convenient for insert in the soil more because drill bit bottom is sharp-pointed, the later stage sampling cylinder's of being convenient for insert, reduce sampling cylinder male degree of difficulty, improve the efficiency of sampling (when meetting the great soil of hardness and being difficult to the sampling cylinder and insert, can rotate the rotary wheel dish and make the drill bit move down and open soil and make it loose, later again with drill bit income sampling cylinder inside continue to trample down the push plate and move the sampling cylinder and move down and collect soil, can remove the drill bit after the collection is accomplished and utilize the drill bit to shift out the soil extrusion that will sample once more.

Example 3:

the present embodiment provides a sampling device for soil moisture content determination, which includes the technical features of the above embodiments, and further includes: the observation assembly 8 comprises two indication blocks 801 and two scale marks 802, the two indication blocks 801 and the two scale marks 802 are respectively fixedly arranged on the surfaces of one sides of the two lower pressing plates 5, and the two scale marks 802 are respectively arranged on one sides of the two lower pressing grooves 10;

the two indicating blocks 801 and the two scale marks 802 are used in cooperation, and the numerical values of the two scale marks 802 are sequentially increased from top to bottom.

In this embodiment, because instruct the piece to link together through holding down plate and sampling barrel, therefore also can instruct the piece to remove thereupon when the foot is stepped on the holding down plate and is moved sampling barrel and move down, instruct the piece to remove and then indicate the position on the scale mark and can change, instruct the distance that the piece moved down this moment promptly for male degree of depth, the accurate sampling depth of observing soil of person of facilitating the use from this improves the accuracy that later stage detected.

Example 4:

the present embodiment provides a sampling device for soil moisture content determination, which includes the technical features of the above embodiments, and further includes: base 1, base 1's upper surface runs through and has seted up rotation groove 11, and the connecting hole has all been seted up to the both sides of rotating groove 11 inside, rotates the inside of rotating groove 11 and installs wheel carrier 17 through the pivot rotation, and the gyro wheel 18 is installed through the bull stick rotation in wheel carrier 17's inboard, and the surface of wheel carrier 17 both sides all runs through and has seted up fixed orifices 20.

In this embodiment, through installing the gyro wheel in one side of base to convenient to use person's drive device wholly removes, avoids the trouble that continuous transport brought, has reduced user's work burden, has improved the practicality of device.

Example 5:

the present embodiment provides a sampling device for soil moisture content determination, which, in addition to the technical solutions of the above embodiments, has the following technical features, and further includes: the limiting assembly 6 comprises mounting boxes 601, the number of the mounting boxes 601 is four, the four mounting boxes 601 are fixedly welded around the upper surface of the base 1 respectively, positioning rods 602 penetrate through the upper surfaces of the four mounting boxes 601 and are movably inserted, a pedal 603 is fixedly welded at the top end of each positioning rod 602, limiting discs are fixedly welded on the surfaces of the four positioning rods 602, each limiting disc is correspondingly positioned inside each mounting box 601, and a first spring 604 is fixedly connected between the lower surface of each limiting disc and the upper surface of the base 1;

the four mounting boxes 601 are respectively located right above the four insertion holes 12 and are communicated with the insides of the insertion holes 12.

In this embodiment, step on the footboard through the foot and drive the locating lever and move down to insert the underground to an extrusion spring shrink can be fixed the base at appointed sampling position, improves the accuracy of sampling, avoids removing at sampling in-process base and makes the sampling position change the detection that influences the later stage.

Example 6:

the present embodiment provides a sampling device for soil moisture content determination, which includes the technical features of the above embodiments, and further includes: lapping assembly 7, lapping assembly 7 include magnet 702, and magnet 702 fixed mounting has lapping plate 701 in the outside surperficial of sleeve 2, and lapping plate 701 is located the below of both sides holding down plate 5 and is connected with the lower surface contact of holding down plate 5 on the outside of magnet 702, and lapping plate 701 keeps away from the fixed surface mounting of magnet 702 one side and has pull ring 703.

In this embodiment, through being in the same place lap strap and magnet actuation to utilize the lap strap to prop up the holding down plate of both sides, avoid removing going on that in-process cartridge gliding influence removed, utilize the lap strap to fix the cartridge in telescopic inside in addition, avoid causing the damage to it when not using.

Example 7:

the present embodiment provides a sampling device for soil moisture content determination, which, in addition to the technical solutions of the above embodiments, has the following technical features, and further includes: the surface of one side of the base 1 is provided with a sliding chute 14, the interior of the sliding chute 14 is communicated with the interior of one connecting hole, the interior of the sliding chute 14 is connected with a push-pull block 15 in a sliding and clamping manner, a second spring 16 is fixedly arranged between the surface of one side, far away from the connecting hole, of the push-pull block 15 and the surface of the interior of the sliding chute 14, and the surface of one side, far away from the second spring 16, of the push-pull block 15 is fixedly connected with a fixed inserting plate 19;

wherein, the fixed inserting plate 19 is inserted and connected with the fixed hole 20 and the connecting hole.

In this embodiment, can extrude the shrink of spring two through pulling push-and-pull piece, thereby the shrink of spring two can make fixed picture peg remove with the inserting of connecting hole and fixed orifices and close and loosen, is convenient for rotate the wheel carrier to accomplish packing up and releasing of gyro wheel.

While the embodiments of the present application have been described in connection with the drawings, the embodiments and features of the embodiments of the present application can be combined with each other without conflict, and the present application is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present application and the claims.

Claims (7)

1. The utility model provides a sampling device for soil moisture content survey, includes base (1), the lower surface of base (1) runs through and has seted up through-hole (13), the upper surface of base (1) all runs through all around and has seted up jack (12), its characterized in that still includes:

the sampling device comprises a sleeve (2), wherein the sleeve (2) is fixedly welded on the upper surface of a base (1), handheld handles (9) are fixedly welded on the surfaces of two sides of the sleeve (2), the handheld handles (9) on the two sides are symmetrically arranged, pressing grooves (10) are formed in the surfaces of the two sides of the sleeve (2) in a penetrating mode, the pressing grooves (10) on the two sides are respectively located under the handheld handles (9) on the two sides, pressing plates (5) are slidably clamped in the pressing grooves (10) on the two sides, and a sampling cylinder (3) is fixedly welded between the two pressing plates (5);

the sleeve (2) is movably sleeved outside the sampling cylinder (3), the sleeve (2) is located right above the through hole (13), and the interior of the sleeve (2) is communicated with the interior of the through hole (13).

2. The sampling device for soil moisture content measurement according to claim 1, further comprising:

the soil loosening assembly (4) comprises a screw (401), the bottom end of the screw (401) sequentially penetrates through the upper surfaces of the sleeve (2) and the sampling cylinder (3), a drill bit (403) is fixedly installed at the bottom end of the screw (401), and a rotating wheel disc (402) is fixedly installed at the top end of the screw (401);

the screw rod (401) is movably inserted into the sleeve (2), the screw rod (401) is in threaded connection with the sampling cylinder (3), and the diameter of the top end of the drill bit (403) is the same as that of the inner wall of the sampling cylinder (3).

3. The sampling device for soil moisture content measurement according to claim 1, further comprising:

the observation assembly (8) comprises two indication blocks (801) and two scale marks (802), the two indication blocks (801) and the two scale marks (802) are respectively fixedly installed on the surfaces of one sides of the two lower pressing plates (5), and the two scale marks (802) are respectively arranged on one sides of the two lower pressing grooves (10);

the two indicating blocks (801) and the two graduation lines (802) are matched for use, and the numerical values of the two graduation lines (802) are sequentially increased from top to bottom.

4. The sampling device for soil moisture content measurement according to claim 1, further comprising:

base (1), the upper surface of base (1) runs through and has seted up rotation groove (11), the connecting hole has all been seted up to the both sides of rotating groove (11) inside, the inside of rotating groove (11) is rotated through the pivot and is installed wheel carrier (17), gyro wheel (18) are installed through the bull stick rotation to the inboard of wheel carrier (17), fixed orifices (20) have all been run through on the surface of wheel carrier (17) both sides.

5. The sampling device for soil moisture content measurement according to claim 1, further comprising:

the limiting assembly (6) comprises four mounting boxes (601), the four mounting boxes (601) are respectively fixedly welded around the upper surface of the base (1), positioning rods (602) are movably inserted into the upper surfaces of the four mounting boxes (601) in a penetrating manner, a pedal (603) is fixedly welded at the top end of each positioning rod (602), limiting discs are fixedly welded on the surfaces of the four positioning rods (602), each limiting disc is correspondingly positioned in each mounting box (601), and a first spring (604) is fixedly connected between the lower surface of each limiting disc and the upper surface of the base (1);

the four mounting boxes (601) are respectively positioned right above the four insertion holes (12) and communicated with the insides of the insertion holes (12).

6. The sampling device for soil moisture content determination according to claim 1, further comprising:

lapping assembly (7), lapping assembly (7) includes magnet (702), magnet (702) fixed mounting is on the outside surface of sleeve (2), the outer surface actuation of magnet (702) has lapping plate (701), lapping plate (701) are located both sides the below of holding down plate (5) and the lower surface contact with holding down plate (5) are connected, lapping plate (701) are kept away from the fixed surface of magnet (702) one side and are installed pull ring (703).

7. The sampling device for soil moisture content measurement according to claim 1, further comprising:

the surface of one side of the base (1) is provided with a sliding groove (14), the interior of the sliding groove (14) is communicated with the interior of one connecting hole, a push-pull block (15) is connected to the interior of the sliding groove (14) in a sliding and clamping mode, a second spring (16) is fixedly installed between the surface of one side, far away from the connecting hole, of the push-pull block (15) and the surface of the interior of the sliding groove (14), and a fixed inserting plate (19) is fixedly connected to the surface of one side, far away from the second spring (16), of the push-pull block (15);

wherein, the fixed inserting plate (19) is inserted and connected with the fixed hole (20) and the connecting hole.

Images