CN220751677U - Undisturbed soil sampling device capable of opening and closing plane - Google Patents

Abstract

The application belongs to the technical field of soil sampling, and particularly relates to a planar open-close undisturbed soil sampling device, which comprises a telescopic mechanism and a sampling mechanism; the sampling mechanism is arranged at the bottom of the telescopic mechanism, the bottom surface is a plane, and the sampling mechanism can rotate at the bottom of the telescopic mechanism and is driven to vertically move through the telescopic mechanism and extend into the appointed depth of soil; the inside of sampling mechanism has hollow cylinder chamber, and sampling mechanism includes the plane subassembly that opens and shuts, and the plane subassembly that opens and shuts is fixed mounting in the bottom of sampling mechanism's hollow cylinder chamber. Compared with the prior art, the soil resistance can be effectively overcome, the soil sample with the specified depth is directly taken, surface weed treatment and soil profile excavation are not required to be carried out on the sampling place before sampling, and the damage degree of the surface soil environment is reduced to the minimum.

Description

Undisturbed soil sampling device capable of opening and closing plane

Technical Field

The utility model belongs to the technical field of soil sampling, and particularly relates to a planar open-close undisturbed soil sampling device.

Background

Soil is an important component of the ecological environment, and the collection and monitoring of soil samples are the precondition for identifying the quality of the ecological environment. At present, the soil sample sampler can destroy the surface environment, and has the following problems: 1. the original sampling drill hole is an inclined knife edge, the sampling depth is manually controlled, the precision is not enough, and the soil resistance can not be effectively overcome; 2. without bulldozer, the soil can not be taken out smoothly after sampling is finished, surface weeds and excavated soil sections of the sampling area need to be treated before sampling, the damage to the soil surface is large, and backfilling is needed after sampling is finished. Therefore, there is a need for an undisturbed soil sampling device that can solve the existing problems.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the planar open-close undisturbed soil sampling device, after a sampling mechanism reaches a first designated depth of soil, a planar open-close assembly is opened, the sampling mechanism further reaches a second designated depth of soil, and the soil is extruded to enter a hollow cylindrical cavity from the planar open-close assembly for collection.

In order to achieve the purpose, the utility model provides a plane open-close undisturbed soil sampling device, which comprises a telescopic mechanism and a sampling mechanism;

the sampling mechanism is arranged at the bottom of the telescopic mechanism, the bottom surface of the sampling mechanism is a plane, and the sampling mechanism rotates at the bottom of the telescopic mechanism, is driven by the telescopic mechanism to vertically move and stretches into the appointed depth of the soil;

the inside of sampling mechanism has the cavity cylinder chamber, sampling mechanism includes the plane subassembly that opens and shuts, the plane subassembly that opens and shuts is fixed mounting in the bottom of cavity cylinder chamber.

Further, the sampling mechanism further comprises a sliding block, the sliding block is arranged in the hollow cylindrical cavity of the sampling mechanism and moves up and down, the sliding block divides the hollow cylindrical cavity of the sampling mechanism into an oil cavity and a soil sample collecting cavity, and the soil sample collecting cavity is positioned below the oil cavity and is not communicated with the oil cavity;

when collecting the soil sample, the plane subassembly that opens and shuts is opened, and soil gets into the soil sample under the effect of sampling mechanism and telescopic machanism and gathers the chamber.

Further, the sampling mechanism also comprises a drill bit and a driven gear;

the main body of the drill bit is of a cylindrical structure, a hollow cylindrical hole is formed in the main body, a driven gear is arranged at one end of the cylindrical structure, and a spiral blade is arranged at the periphery of the other end of the cylindrical structure.

Further, the sampling mechanism further comprises an oil inlet joint, a third motor, an oil return joint, a shaft rod and a third motor fixing plate;

the third motor fixing plate is arranged at the top of the drill bit, a first round hole, a second round hole and a third round hole which are communicated with the hollow cylindrical hole of the drill bit are formed in the third motor fixing plate, the central shaft of the first round hole is coaxial with the hollow cylindrical hole of the drill bit, and the second round hole and the third round hole are symmetrically arranged at two sides of the first round hole;

the third motor is fixedly arranged on the third motor fixing plate through a motor mounting seat, and an output shaft of the third motor is coaxial with a central shaft of a first round hole on the third motor fixing plate; the shaft rod is vertically arranged in the hollow cylindrical hole of the drill bit, one end of the shaft rod extends out of the first round hole of the third motor fixing plate and is rotationally connected with the output shaft of the third motor through the coupler; the sliding block is sleeved on the shaft rod and moves up and down along the shaft rod;

one ends of the oil inlet joint and the oil return joint are fixedly installed with the second round hole and the third round hole of the third motor fixing plate respectively, and the other ends of the oil inlet joint and the oil return joint are connected with a hydraulic system through hydraulic pipes.

Further, the plane opening and closing assembly comprises a perforated fixing plate and a blade;

the fixing plate with holes is of a platy cylindrical structure, and a plurality of fan blade holes are formed along a central shaft array; the blade center is provided with the blade pivot, and the blade pivot is installed in the bottom of axostylus axostyle, and the coaxial setting of center pin with the axostylus axostyle.

Further, the blades are provided with blades matched with the number of the blade holes, the blades are arranged along the central shaft array of the blade rotating shaft, the molded surfaces of the blade holes are reduced according to a preset proportion based on the molded surfaces of the blades, and the shaft rod drives the blades to rotate by a preset angle, so that the blades of the blades are positioned right above the blade holes, and the blade holes are closed.

Further, the telescopic mechanism comprises a multistage stepped sleeve, the diameters of the multistage stepped sleeve are sequentially reduced from top to bottom, the top of the lower sleeve is sleeved at the bottom of the upper sleeve, and the lower sleeve can move in a telescopic manner in the upper sleeve Fang Taotong.

Further, the telescopic mechanism further comprises a driving gear and a second motor;

the second motor is arranged on the inner side of the bottom surface of the multistage stepped sleeve, an output shaft of the second motor is vertically upwards, and the driving gear is rotationally connected with the second motor;

the bottom surface of multistage ladder sleeve has the centre bore, and the top of drill bit stretches into its inside by the centre bore of multistage ladder sleeve's bottom surface, and driven gear cover is established at the top of drill bit, and with driving gear meshing rotation.

Further, the sampling mechanism further comprises a protective cover;

the protective cover is sleeved on the drill bit and is positioned between the driven gear and the spiral blade of the drill bit.

Further, the plane opening and closing undisturbed soil sampling device further comprises a power mechanism which is arranged at the top of the telescopic mechanism;

the power mechanism comprises a controller, a power supply and a displacement sensor, wherein the controller and the power supply are both arranged inside the power mechanism, the displacement sensor is arranged on the inner bottom surface of the multistage ladder sleeve and used for detecting the depth of the drill bit in soil and conveying position information to the controller, and the controller controls the telescopic mechanism and the sampling mechanism to implement corresponding actions based on the position information.

The beneficial effects of the utility model are as follows:

the first sampling mechanism is arranged at the bottom of the telescopic mechanism for rotary motion, and the telescopic mechanism drives the sampling mechanism to vertically move and extend into the appointed depth of the soil; the inside of sampling mechanism has the cavity cylinder chamber, and sampling mechanism's plane opening and shutting subassembly fixed mounting is in sampling mechanism's cavity cylinder chamber's bottom, and sampling mechanism's bottom surface is the plane, and sampling mechanism reaches behind the first appointed degree of depth of soil, and the plane opening and shutting subassembly is opened, and sampling mechanism further reaches the second appointed degree of depth of soil, and soil is pressed by the plane opening and shutting subassembly and gets into cavity cylinder chamber and gather. Compared with the prior art, the soil surface ecological environment treatment method can effectively overcome the resistance of the soil, directly take the soil sample with the designated depth, and does not need to carry out surface weed treatment and soil profile excavation on the sampling place before sampling, so that the ecological environment damage of the soil surface is minimized;

the main body of the drill bit is of a cylindrical structure, a hollow cylindrical hole is formed in the main body, a spiral blade is arranged on the periphery of the cylindrical structure, and the sampling mechanism smoothly stretches into the soil through the spiral blade, so that the sampling resistance is effectively reduced;

thirdly, the top of the cylindrical structure of the drill bit is provided with a preset distance from one end close to the spiral blade, the preset distance is used for installing the driven gear and the protective cover, the driven gear is positioned in the telescopic mechanism and meshed with the driving gear in the telescopic mechanism to drive the drill bit to rotate, damage caused by the fact that the driven gear and the driving gear are not attached to splashed soil when the drill bit stretches into the soil can be effectively prevented, and the protective cover is sleeved on the drill bit and positioned between the driven gear and the spiral blade, so that the splash soil is further enhanced to enter the meshing surface of the driven gear and the driving gear;

fourthly, the shaft rod is vertically arranged in the hollow cylindrical hole of the drill bit, the sliding block is sleeved on the shaft rod and moves up and down along the shaft rod, the periphery of the sliding block slides in a friction manner with the inner wall of the hollow cylindrical hole of the drill bit, an oil cavity of the hollow cylindrical hole of the drill bit is arranged above the top of the sliding block, and a soil sample collecting cavity is arranged below the bottom of the sliding block, so that collected soil samples are prevented from being polluted by the oil cavity;

fifthly, the perforated fixed plate is horizontally and fixedly arranged at the inner side of the bottom of the drill bit, the blades are fixedly arranged at the bottom of the shaft rod, the blades are driven to rotate through the rotation of the shaft rod, a plurality of blade holes are formed along the central shaft array of the perforated fixed plate, the profiles of the blade holes are reduced according to a preset proportion based on the profiles of the blades, the shaft rod drives the blades of the blades to rotate by a preset angle, so that the blades of the blades are positioned right above the blade holes, the blade holes are closed, collected soil samples can be effectively closed in a soil sample collection cavity, and when the drill bit moves away from soil, the collected soil samples are protected from being polluted by upper soil, and soil sample analysis at a specified depth is affected;

the displacement sensor is arranged on the inner bottom surface of the three-stage sleeve and is connected with the controller, and is used for detecting that the bottom surface of the drill bit reaches the appointed depth in soil and conveying the position information to the controller, and the controller controls the first motor, the second motor and the third motor to execute corresponding actions based on the position information, so that soil samples with the appointed depth are effectively detected, the soil sample collection precision with the appointed depth is improved, and the accuracy of soil sample analysis is improved.

Drawings

FIG. 1 is a schematic view of a planar open-close undisturbed soil sampling drill of the present utility model;

FIG. 2 is a cross-sectional view of the telescoping mechanism of the present utility model;

FIG. 3 is a cross-sectional view of the sampling mechanism of the present utility model;

FIG. 4 is a schematic view of the assembly of the telescopic mechanism and sampling mechanism of the present utility model;

FIG. 5 is a schematic view of a perforated retainer plate of the present utility model;

fig. 6 is a schematic view of a blade of the present utility model.

Wherein, 1-power mechanism; 2-a telescopic mechanism; 20-primary sleeve; 21-a secondary sleeve; 22-three-stage sleeve; 23-a first motor; 24-a first nut; 25-a second nut; 26-a screw rod; 27-a third nut; 28-a drive gear; 29-a second motor; 3-sampling mechanism; 30-an oil inlet joint; 31-a third motor; 32-an oil return joint; 33-driven gear; 34-a protective cover; 35-a drill bit; 36-sliding blocks; 37-shaft lever; 38-a perforated fixing plate; 380-fan blade holes; 39-leaf; 390 blade spindle.

Detailed Description

In order to better understand the technical solutions of the present application, the present utility model will be further described in detail below with reference to the drawings and the embodiments.

The terms of upper, lower, left, right, front, rear, and the like in the present application are established based on the positional relationship shown in the drawings. The drawings are different, and the corresponding positional relationship may be changed, so that the scope of protection cannot be understood.

In the present application, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected or communicable with each other, directly connected, indirectly connected through an intermediate medium, communicated between two components, or an interaction relationship between two components. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

As shown in fig. 1, the plane open-close undisturbed soil sampling drill bit comprises a power mechanism 1, a telescopic mechanism 2 and a sampling mechanism 3. The telescopic mechanism 2 is provided with a telescopic structure, the power mechanism 1 is arranged at the top of the telescopic mechanism 2, the power mechanism 1 is used for providing power for the telescopic mechanism 2 and the sampling mechanism 3, the bottom of the telescopic mechanism 2 is rotationally connected with the sampling mechanism 3, and the sampling mechanism 3 is driven by the telescopic mechanism 2 to reach the soil specified depth. The sampling mechanism 2 is a hollow screw rod, a rotating structure is arranged inside the sampling mechanism 2, a screw blade is arranged outside the sampling mechanism, a plane is arranged at the bottom of the sampling mechanism 2, an opening and closing blade is arranged on the inner side of the bottom of the sampling mechanism 2 and connected with the rotating structure inside the sampling mechanism 2, so that the opening and closing blade is horizontally opened and closed according to the preset rotating angle of the rotating structure, a soil sample is collected when the opening and closing blade is opened, and the opening and closing blade is closed after the soil sample collection is completed. The bottom of the sampling mechanism 2 is contacted with soil, the spiral blade of the sampling mechanism 2 rotates to extend into the soil to a specified depth, and the opening and closing blades of the sampling mechanism 2 are opened and then further extend into the soil to collect soil samples.

As shown in fig. 2, 3, and 4, the telescopic mechanism 2 includes a primary sleeve 20, a secondary sleeve 21, a tertiary sleeve 22, a first motor 23, a first nut 24, a second nut 25, a screw 26, a third nut 27, a drive gear 28, and a second motor 29.

The telescopic mechanism 2 is a multistage stepped sleeve, the diameters of the multistage stepped sleeve are sequentially reduced from top to bottom, the top of the sleeve positioned below is sleeved with the bottom of the sleeve arranged above the telescopic mechanism, and the sleeve positioned below stretches and moves in the sleeve above the sleeve. The telescopic mechanism 2 of the present embodiment adopts a three-stage stepped sleeve, taking the state shown in fig. 2 as an example, the second-stage sleeve 21 is sleeved at the inner lower end of the first-stage sleeve 20, and the third-stage sleeve 22 is sleeved at the inner lower end of the second-stage sleeve 21. The cylinder wall of each stage of sleeve is provided with a matched vertical chute, the bottom of the sleeve positioned at the uppermost is provided with a chute, the top and the bottom of the sleeve positioned at the middle are both provided with a chute, the top of the sleeve positioned at the lowermost is provided with a chute, and the chute positioned at the lower sleeve is in sliding connection with the chute of the sleeve above the lower sleeve through a ball or a roller. The total length of the sliding chute is matched with the telescopic travel of the telescopic mechanism 2. The first motor 23, the first nut 24, the second nut 25, the screw 26, the third nut 27, the driving gear 28 and the second motor 29 are all located inside the telescopic mechanism 2.

The insides of the primary sleeve 20, the secondary sleeve 21 and the tertiary sleeve 22 are provided with horizontal support plates. The first motor 23 is fixed on the horizontal support plate of the primary sleeve 20 through a motor mounting seat, and the first nut 24, the second nut 25 and the third nut 27 are respectively fixed on the horizontal support plates of the primary sleeve 20, the secondary sleeve 21 and the tertiary sleeve 22 through nut mounting seats, and the first nut 24, the second nut 25 and the third nut 27 are coaxially mounted and coaxial with the output shaft of the first motor 23.

One end of a screw rod 26 is rotationally connected with an output shaft of the first motor 23 through a coupler, one end of the screw rod 26 sequentially penetrates into the first nut 24, the second nut 25 and the third nut 27 and is fixedly connected with a limiting block below a horizontal supporting plate of the third-stage sleeve 22, the first motor 23 drives the screw rod 26 to rotate, and then the second-stage sleeve 21 and the third-stage sleeve 22 are driven to stretch out and draw back respectively in the sleeves above.

The bottom of tertiary sleeve 22 has the bottom surface, and second motor 29 installs in tertiary sleeve 22 bottom surface inboard, and the output shaft of second motor 29 is vertical upwards, and driving gear 28 is connected with second motor 29 rotation, is provided with the centre bore on tertiary sleeve 22 bottom surface, and the centre bore of tertiary sleeve 22 bottom surface is used for installing sampling mechanism 3.

The sampling mechanism 3 comprises an oil inlet joint 30, a third motor 31, an oil return joint 32, a driven gear 33, a protective cover 34, a drill bit 35, a sliding block 36, a shaft 37, a perforated fixing plate 38 and a blade 39.

The main body of the drill 35 is a cylindrical structure having a hollow cylindrical hole therein, the periphery of the cylindrical structure is provided with a screw blade, and the top of the cylindrical structure has a preset distance from one end close to the screw blade for mounting the driven gear 33 and the shield 34. The top of the drill bit 35 extends into the three-stage sleeve 22 from the central hole of the bottom surface of the three-stage sleeve 22, the drill bit 35 is in clearance fit with the central hole of the bottom surface of the three-stage sleeve 22, and the driven gear 33 is sleeved on the top of the drill bit 35 and meshed with the driving gear 28 for rotation. The protection cover 34 is sleeved on the drill bit 35 and is positioned between the driven gear 33 and the spiral blade, and is used for preventing the soil from splashing into the three-stage sleeve 22 when the drill bit 35 stretches into the soil, so that the meshing movement of the driving gear 28 and the driven gear 33 is damaged, and finally the sampling mechanism 3 is damaged.

The third motor fixed plate is installed at the top of drill bit 35, has three round holes that link up with the hollow cylinder hole of drill bit 35 on the third motor fixed plate, and the center pin of first round hole is coaxial with the hollow cylinder hole of drill bit 35, and second round hole and third round hole symmetry set up in the both sides of first round hole.

The third motor 31 is fixedly mounted on the third motor fixing plate through a motor mounting seat, and an output shaft of the third motor 31 is coaxial with a central shaft of the first round hole of the third motor fixing plate. The axostylus axostyle 37 is vertical installs inside the hollow cylinder hole of drill bit 35, and the one end of axostylus axostyle 37 stretches out in the first round hole top of third motor fixed plate, and is connected with the output shaft rotation of third motor 31 through the shaft coupling, and the other end of axostylus axostyle 37 is connected with blade 39. The sliding block 36 is sleeved on the shaft rod 37 and moves up and down along the shaft rod 37, and the periphery of the sliding block 36 slides with the inner wall of the hollow cylindrical hole of the drill bit 35 in a friction manner. The top of the slide block 36 is provided with an oil cavity of a hollow cylindrical hole of the drill bit 35, and the bottom of the slide block 36 is provided with a soil sample collection cavity.

A preset distance is provided between the top of the third motor 31 and the stopper at the bottom of the screw rod 26, and the preset distance is the maximum displacement of the bottom of the screw rod 26 below the horizontal support plate of the three-stage sleeve 22, so that when the first-stage sleeve 20, the second-stage sleeve 21 and the three-stage sleeve 22 move upwards along the screw rod 26, the stopper at the bottom of the screw rod 26 is prevented from striking the third motor 31, and the third motor 31 is damaged or the shaft lever 37 is deformed.

In this embodiment, the contact surface between the slider 36 and the inner wall of the hollow cylindrical hole of the drill bit 35 is made of wear-resistant rubber.

One ends of the oil inlet joint 30 and the oil return joint 32 are fixedly installed with the second round hole and the third round hole of the third motor fixing plate respectively, and the other ends of the oil inlet joint 30 and the oil return joint 32 are connected with an external hydraulic system through hydraulic pipes. The oil inlet joint 30 is used for conveying hydraulic oil into the hollow cylindrical hole of the drill bit 35, and the pressure of the hydraulic oil acts on the top of the sliding block 36 so as to enable the sliding block 36 to move downwards along the shaft rod 37; the collected soil sample enters the soil sample collection cavity of the drill bit 35 and acts on the bottom of the slide block 36 to enable the slide block 36 to move upwards along the shaft rod 37, and hydraulic oil in the oil cavity of the hollow cylindrical hole of the drill bit 35 is pressed into an external hydraulic system through the oil return joint 32.

In this embodiment, the oil inlet joint 30 and the oil return joint 32 are mounted at one end of the third motor fixing plate to have a free rotation structure, so that the oil inlet joint 30 and the oil return joint 32 are assembled with the hydraulic pipe when the drill 35 is rotated. The free rotation structure comprises an annular pipe, balls and a joint body, taking an oil inlet joint 30 as an example, the annular pipe is fixedly arranged on a second round hole of a third motor fixing plate, one end of the joint body is sleeved into the annular pipe, matched sliding grooves are formed in the joint body and the annular pipe, and the balls are located in the sliding grooves of the joint body and the annular pipe.

Preferably, the hydraulic pipes of the oil inlet joint 30 and the oil return joint 32 are located inside the telescopic mechanism 2, and a through hole is formed in the horizontal support plate of each stage of sleeve of the telescopic mechanism 2, so as to pass through the hydraulic pipes of the oil inlet joint 30 and the oil return joint 32.

The perforated fixing plate 38 is horizontally and fixedly arranged on the inner side of the bottom of the drill bit 35, the blades 39 are fixedly arranged on the bottom of the shaft rod 37, the blades 39 are driven to rotate by the rotation of the shaft rod 37, and clearance fit is adopted between the blades 39 and the perforated fixing plate 38.

As shown in fig. 5 and 6, the perforated fixing plate 38 includes a fan blade hole 380, and the fan blade 39 includes a blade rotation shaft 390. The perforated fixing plate 38 has a plate-like cylindrical structure, and a plurality of fan blade holes 380 are formed along a central axis of the perforated fixing plate 38. The blades 39 are mounted on the bottom of the shaft 37 through a blade rotating shaft 390, and the central shaft of the shaft 37 is coaxially arranged with the central shaft of the blade rotating shaft 390.

The blades 39 are provided with blades matched with the number of the blade holes 380, a plurality of blades are arranged along the central axis array of the blade rotating shaft 390, the molded surfaces of the blade holes 380 are reduced according to a preset proportion based on the molded surfaces of the blades 39, and the shaft 37 drives the blades 39 to rotate by a preset angle, so that the blades of the blades 39 are positioned right above the blade holes 380, and the blade holes 380 are closed.

The power mechanism 1 of the present embodiment includes a controller, a power source and a displacement sensor, both of which are installed inside the power mechanism 1, the displacement sensor being installed at the inner bottom surface of the three-stage sleeve 22. The controller is respectively connected with the first motor 23, the second motor 29, the third motor 31 and the displacement sensor, and the first motor 23, the second motor 29 and the third motor 31 respectively drive the screw rod 26, the shaft rod 37 and the driving gear 28 to rotate clockwise or anticlockwise based on control signals of the controller. The displacement sensor is used for detecting that the bottom of the drill bit 35 reaches the depth in the soil and transmitting the position information to the controller, and the controller controls the first motor 23, the second motor 29 and the third motor 31 to implement corresponding actions based on the position information.

The plane open-close undisturbed soil sampling drill bit of the embodiment is vertically arranged on an external supporting frame, and the working method of the plane open-close undisturbed soil sampling drill bit comprises the following steps:

step 1: the controller of the power mechanism 1 controls the first motor 23 to drive the screw rod 26 to rotate clockwise, the first-stage sleeve 20, the second-stage sleeve 21 and the third-stage sleeve 22 move downwards to drive the bottom surface of the drill bit 35 to contact with the soil surface, at the moment, the second motor 29 and the third motor 31 do not start to work, the blades of the blades 39 are positioned right above the blade holes 380, the blade holes 380 are closed, and the displacement sensor of the power mechanism 1 collects initial position confidence and feeds back to the controller.

Step 2: the controller of the power mechanism 1 controls the first motor 23 and the second motor 29 to start working, the spiral blade at the periphery of the drill bit 35 enters the soil to a first designated depth, the controller of the power mechanism 1 controls the first motor 23 and the second motor 29 to stop working, the controller of the power mechanism 1 controls the third motor 31 to work clockwise, and the blades 39 rotate until the blade holes 380 are communicated with the soil sample collection cavity below the bottom of the sliding block 36.

Step 3: the external hydraulic system fills the oil cavity of the hollow cylindrical hole of the drill bit 35 with hydraulic oil through the oil inlet joint 30, and the hydraulic oil compresses the sliding block 36 to move downwards.

Step 4: the controller of the power mechanism 1 controls the first motor 23 and the second motor 29 to work clockwise, so that the drill bit 35 moves down to a second designated depth, the displacement sensor transmits the second designated depth information to the controller, the controller controls the first motor 23 and the second motor 29 to stop working, at the moment, soil samples enter the soil sample collection cavity of the drill bit 35 through the fan blade holes 380 under the extrusion action, and the sliding block 36 compresses hydraulic oil under bottom pressure and returns to an external hydraulic system through the oil return joint 32.

Step 5: the controller of the power mechanism 1 controls the third motor 31 to work anticlockwise, the fan blades of the blades 39 are positioned right above the fan blade holes 380, the third motor 31 stops working after the fan blade holes 380 are closed, the controller of the power mechanism 1 controls the first motor 23 and the second motor 29 to work anticlockwise, and the drill bit 35 moves upwards to leave soil under the driving of the telescopic mechanism 2.

Step 6: the controller of the power mechanism 1 controls the third motor 31 to work clockwise, so that the blades 39 rotate until the blade holes 380 are communicated with the soil sample collection cavity below the bottom of the sliding block 36, then the third motor 31 stops working, hydraulic oil of an external hydraulic system enters through the oil inlet connector 30 and pushes the sliding block 36 downwards, and the sliding block 36 pushes collected soil samples out of the blade holes 380 and falls into the collector, so that soil sampling is completed.

The installation mode of the plane open-close undisturbed soil sampling drill bit is various, the plane open-close undisturbed soil sampling drill bit is not limited to being installed on a supporting frame, and the function of the plane open-close undisturbed soil sampling drill bit can be realized by changing the structure and the installation mode of the plane open-close undisturbed soil sampling drill bit installed on an external fixing device.

The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (10)

1. The planar open-close undisturbed soil sampling device is characterized by comprising a telescopic mechanism and a sampling mechanism;

the sampling mechanism is arranged at the bottom of the telescopic mechanism, the bottom surface of the sampling mechanism is a plane, and the sampling mechanism rotates at the bottom of the telescopic mechanism, is driven by the telescopic mechanism to vertically move and stretches into the appointed depth of the soil;

the inside of sampling mechanism has the cavity cylinder chamber, sampling mechanism includes the plane subassembly that opens and shuts, the plane subassembly that opens and shuts is fixed mounting in the bottom of cavity cylinder chamber.

2. The planar open-close undisturbed soil sampling device according to claim 1, wherein the sampling mechanism further comprises a sliding block (36), the sliding block (36) is arranged inside a hollow cylindrical cavity of the sampling mechanism and moves up and down, the sliding block (36) divides the hollow cylindrical cavity of the sampling mechanism into an oil cavity and a soil sample collection cavity, and the soil sample collection cavity is positioned below the oil cavity and is not communicated with the oil cavity;

when collecting the soil sample, the plane subassembly that opens and shuts is opened, and soil gets into the soil sample under the effect of sampling mechanism and telescopic machanism and gathers the chamber.

3. The planar open-close undisturbed soil sampling device as claimed in claim 2, wherein the sampling mechanism further comprises a drill bit (35) and a driven gear (33);

the main body of the drill bit (35) is of a cylindrical structure, a hollow cylindrical hole is formed in the main body, a driven gear (33) is arranged at one end of the cylindrical structure, and a spiral blade is arranged at the periphery of the other end of the cylindrical structure.

4. The planar open-close undisturbed soil sampling device as claimed in claim 3, wherein the sampling mechanism further comprises an oil inlet joint (30), a third motor (31), an oil return joint (32), a shaft lever (37) and a third motor fixing plate;

the third motor fixing plate is arranged at the top of the drill bit (35), a first round hole, a second round hole and a third round hole which are communicated with the hollow cylindrical hole of the drill bit (35) are formed in the third motor fixing plate, the central shaft of the first round hole is coaxial with the hollow cylindrical hole of the drill bit (35), and the second round hole and the third round hole are symmetrically arranged at two sides of the first round hole;

the third motor (31) is fixedly arranged on the third motor fixing plate through a motor mounting seat, and an output shaft of the third motor is coaxial with a central shaft of a first round hole on the third motor fixing plate; the shaft rod (37) is vertically arranged in the hollow cylindrical hole of the drill bit (35), one end of the shaft rod extends out of the first round hole of the third motor fixing plate and is rotationally connected with the output shaft of the third motor (31) through a coupler; the sliding block (36) is sleeved on the shaft lever (37) and moves up and down along the shaft lever (37);

one ends of the oil inlet joint (30) and the oil return joint (32) are fixedly installed with the second round hole and the third round hole of the third motor fixing plate respectively, and the other ends of the oil inlet joint and the oil return joint are connected with a hydraulic system through hydraulic pipes.

5. The planar open-close undisturbed soil sampling device as claimed in claim 4, wherein the planar open-close assembly comprises a perforated fixed plate (38) and a blade (39);

the fixing plate (38) with holes is of a platy cylindrical structure, and a plurality of fan blade holes are formed along a central shaft array; the center of the blade (39) is provided with a blade rotating shaft, and the blade rotating shaft is arranged at the bottom of the shaft lever (37) and is coaxially arranged with the central shaft of the shaft lever (37).

6. The planar open-close undisturbed soil sampling device according to claim 5, wherein the blade (39) is provided with blades matched with the number of blade holes, a plurality of blades are arranged along a central shaft array of a blade rotating shaft, the profile of the blade holes is reduced according to a preset proportion based on the profile of the blades of the blade (39), and the shaft (37) drives the blade (39) to rotate by a preset angle, so that the blades of the blade (39) are positioned right above the blade holes, and the blade holes are closed.

7. A planar open-close undisturbed soil sampling device as claimed in claim 3, wherein the telescopic mechanism comprises a multi-stage stepped sleeve, the diameter of which is sequentially reduced from top to bottom, the top of the lower sleeve is sleeved at the bottom of the upper sleeve, and the lower sleeve can move telescopically in the upper sleeve Fang Taotong.

8. The planar open-close undisturbed soil sampling device as claimed in claim 7, wherein the telescopic mechanism further comprises a driving gear (28) and a second motor (29);

the second motor (29) is arranged on the inner side of the bottom surface of the multistage stepped sleeve, an output shaft of the second motor is vertically upwards, and a driving gear (28) is rotationally connected with the second motor (29);

the bottom surface of multistage ladder sleeve has the centre bore, and the top of drill bit (35) stretches into its inside by the centre bore of multistage ladder sleeve's bottom surface, and driven gear (33) cover is established at the top of drill bit (35) and is rotated with driving gear (28) meshing.

9. The planar open-close undisturbed soil sampling device as claimed in claim 2, wherein the sampling mechanism further comprises a protective cover (34);

the protective cover (34) is sleeved on the drill bit (35) and is positioned between the driven gear (33) and the spiral blade of the drill bit (35).

10. The planar open-close undisturbed soil sampling device as recited in claim 7, further comprising a power mechanism mounted on top of the telescoping mechanism;

the power mechanism comprises a controller, a power supply and a displacement sensor, wherein the controller and the power supply are both arranged inside the power mechanism, the displacement sensor is arranged on the inner bottom surface of the multistage ladder sleeve and used for detecting the depth of a drill bit (35) reaching the soil and conveying position information to the controller, and the controller controls the telescopic mechanism and the sampling mechanism to implement corresponding actions based on the position information.