CN114894517A

CN114894517A - Pesticide residue detects uses quick sampling device

Info

Publication number: CN114894517A
Application number: CN202210524397.9A
Authority: CN
Inventors: 李广鹏; 王艳艳; 张明宇; 毕思远
Original assignee: Shenzhen Baoeran Standard Technical Service Center
Current assignee: Shenzhen Baoeran Standard Technical Service Center
Priority date: 2022-05-13
Filing date: 2022-05-13
Publication date: 2022-08-12

Abstract

The invention belongs to the technical field of pesticide residue detection, and particularly relates to a rapid sampling device for pesticide residue detection, which comprises a vehicle body, wherein a storage tank is arranged on the vehicle body, two horizontal shafts are rotatably arranged on the left side wall and the right side wall of the vehicle body, wheels are fixedly arranged on the horizontal shafts, and a driving motor for driving the wheels is arranged on the vehicle body through a motor frame; a plurality of strip-shaped plates are uniformly and fixedly arranged on the wheels, and a sampling mechanism is arranged on the vehicle body. The wheel is driven by the driving motor to rotate periodically, and the vehicle body and the sampling mechanism are driven to move for the same distance in the field in each rotation process of the wheel, so that the effect of equidistant sampling is realized; the invention ensures that the soil quantity collected every time is the same, and improves the sampling accuracy.

Description

Pesticide residue detects uses quick sampling device

Technical Field

The invention belongs to the technical field of pesticide residue detection, and particularly relates to a rapid sampling device for pesticide residue detection.

Background

The pesticide is a pesticide used for preventing and controlling plant diseases and insect pests and regulating plant growth in agriculture. During the process of applying the pesticide to the crops, part of the pesticide is absorbed by soil, and if the content of the pesticide in the soil exceeds a specified value, the soil needs to be subjected to harmless treatment, so that the soil needs to be sampled and detected after the crops are harvested.

In order to ensure the accuracy of detection, a multi-point sampling mode is required when soil is sampled, namely, sampling is carried out for multiple times in a field, the sampling points are separated by the same distance, the same soil amount is collected every time, and then the pesticide residue in the collected soil is detected. The traditional mode for sampling soil is that a collector manually samples soil at a certain position through the collector, and then walks to the next sampling point for continuous sampling, the method is difficult to ensure that the distance between every two sampling points is constant, and the soil quantity and the sampling depth of each sampling are the same, so that the sampling accuracy is influenced; at present, soil sampling is carried out by means of a sampler capable of automatically walking, but because soil in a field is soft, and rhizomes of a plurality of plants exist, the sampler is difficult to guarantee to normally run, the effect of equidistant suspension cannot be realized, and the distance between every two sampling points is difficult to guarantee to be constant.

Disclosure of Invention

In order to solve the technical problems, the invention adopts the following technical scheme: a rapid sampling device for detecting pesticide residues comprises a vehicle body, wherein a storage tank for containing soil is arranged on the upper surface of the vehicle body, two horizontal shafts are rotatably arranged on the left side wall and the right side wall of the vehicle body respectively, wheels are fixedly arranged on the horizontal shafts, and a driving motor for driving the wheels is arranged on the vehicle body through a motor frame; the vehicle wheel is characterized in that a plurality of strip-shaped plates are uniformly and fixedly mounted on the circumferential surface of the wheel, two vertical mud scrapers are fixedly mounted on the left side wall and the right side wall of the vehicle body, horizontal hydraulic cylinders are fixedly mounted in positions corresponding to the mud scrapers on the left side wall and the right side wall of the vehicle body, and mud pushing plates perpendicular to the mud scrapers are fixedly mounted at the end parts of telescopic sections of the hydraulic cylinders.

The sampling mechanism is mounted on the vehicle body and comprises two support arms fixedly mounted on the front section face of the vehicle body, vertical guide rails are fixedly mounted on the support arms, a lifting table is vertically and slidably mounted between the two guide rails, a plurality of connecting rods are fixedly mounted on the bottom face of the lifting table, a horizontal round table is fixedly mounted at the bottom ends of the connecting rods together, a cylinder is vertically and fixedly mounted on the bottom face of the round table, a sampling motor is fixedly mounted on the top face of the round table, a vertical shaft which is coincident with the axis of the cylinder is vertically and fixedly mounted at the output end of the sampling motor, and a spiral blade is fixedly mounted on the vertical shaft; a plurality of discharge ports are uniformly formed in the cylinder along the circumferential direction of the cylinder, a first inclined guide plate is fixedly mounted at a position below the discharge ports on the outer wall of the cylinder, a second inclined guide plate is fixedly mounted on the top surface of the vehicle body through a support, the upper end surface of the second guide plate is matched with the lower end surface of the first guide plate, and the bottom end of the second guide plate is located above the storage tank.

According to a preferable technical scheme of the invention, the circumferential surface of the horizontal shaft is provided with a cutter groove, a cutter holder is arranged in the cutter groove in a sliding manner along the radial direction of the horizontal shaft, a cutter blade is fixedly arranged on the outer side surface of the cutter holder, the middle part of the inner side surface of the cutter holder is inclined, the inner end surface of the horizontal shaft is horizontally provided with a sliding chute communicated with the cutter groove, a sliding sheet is horizontally and movably arranged in the sliding chute, one side end surface of the sliding sheet is matched with the inclined part of the inner side surface of the cutter holder, the other side end surface of the sliding sheet is fixedly provided with a first magnet strip, the position of the interior of the vehicle body, which corresponds to the horizontal shaft, is provided with a circular groove coincident with the axis of the inner end surface of the horizontal shaft, and the wall of the circular groove is fixedly provided with a second magnet strip corresponding to the position of the first magnet strip.

As a preferred technical scheme of the invention, an elastic rope is fixedly connected between the inner side surface of the cutter holder and the groove wall of the cutter groove; the sliding sheet is rotatably embedded with a circular ring which is in rolling fit with the inclined part of the inner side surface of the tool apron.

As a preferred technical scheme of the invention, the circumferential surface of the wheel is provided with an accommodating groove at a position between two adjacent strip-shaped plates, the accommodating groove is internally provided with a cleaning block in a sliding manner along the radial direction of the wheel, the surface of the cleaning block facing the accommodating groove is fixedly provided with an arc-shaped block, the wall of the accommodating groove is provided with a push rod in a sliding manner along the axial direction of the wheel, the inner end of the push rod is fixedly provided with a push block attached to the arc-shaped block, and a telescopic spring is fixedly connected between the cleaning block and the wall of the accommodating groove; the outer end fixed mounting of push rod has first magnet piece, and the equal fixed mounting in position that corresponds every mud scraper on the lateral wall about the automobile body has the installation pole, and the fixed mounting has the second magnet piece that corresponds with first magnet piece position on the installation pole.

As a preferred technical scheme of the invention, a fixing frame is arranged on the circumferential surface of the circular truncated cone at a position corresponding to each discharge port, a dredging rod matched with the discharge port is arranged on the fixing frame, and a plurality of dredging blocks are uniformly and fixedly arranged on the dredging rod along the circumferential direction of the dredging rod.

As a preferred technical scheme of the invention, the dredging rod is provided with threads on the surface and penetrates through the fixing frame in a thread matching mode, and the outer end surface of the dredging rod is fixedly provided with a gear column which is superposed with the axis of the dredging rod; the fixed frame is rotatably provided with an installation shaft parallel to the dredging rod, and the installation shaft is fixedly provided with a conical fluted disc and a transmission gear meshed with the gear column.

As a preferred technical scheme of the invention, the circumferential surface of the circular truncated cone is provided with an annular groove and is provided with a plurality of electric sliders through the annular groove, the electric sliders are fixedly provided with horizontal connecting arms, the outer ends of the connecting arms are jointly and fixedly provided with horizontal bevel gear rings, and the bevel gear rings are meshed with the bevel gear discs.

As a preferred technical scheme of the invention, the sampling motor is a double-shaft motor, the output end of the top of the sampling motor is provided with a vertical adjusting screw rod through a commutator, a top plate is fixedly arranged between the top ends of the two guide rails, the lifting platform is provided with a through groove vertically penetrating through the lifting platform, and the adjusting screw rod penetrates through the through groove and penetrates through the top plate in a thread fit manner; the inside flexible fender material cloth of installing through the coiling axle of second stock guide, be connected with the torsional spring between coiling axle and the second stock guide, the tip fixed connection that keeps off the material cloth is in first stock guide bottom.

As a preferred technical scheme of the invention, the commutator comprises a circular shell rotatably mounted on the top surface of a sampling motor, a first bevel gear is fixedly mounted on an output shaft at the top of the sampling motor, the bottom of an adjusting screw is in rotating fit with the circular shell and is fixedly provided with a second bevel gear, a transmission shaft is rotatably mounted on the inner wall of the circular shell, and a third bevel gear meshed with the first bevel gear and the second bevel gear is fixedly mounted on the transmission shaft; an electric telescopic rod is fixedly mounted on the inner wall of the circular shell, and a fourth bevel gear is fixedly mounted at the end part of a telescopic section of the electric telescopic rod.

The invention has at least the following beneficial effects: (1) the wheel is driven by the driving motor to rotate periodically, and the vehicle body and the sampling mechanism are driven to move for the same distance in the field in each rotation process of the wheel, so that the effect of equidistant sampling is realized; in the rotating process of the wheel, the blade in the horizontal shaft continuously extends out of the cutter groove to cut the plant roots and stems wound on the horizontal shaft, so that the influence of the plant roots and stems on the normal running of the wheel is avoided; the holding tank is stretched out to the clearance piece periodicity in the wheel of wheel rotation in-process, and the earth that will fill between adjacent bar shaped plate is outwards released, strikes off adnexed earth on the bar shaped plate through static mud scraper for the bar shaped plate can insert the field smoothly, guarantees the normal rotation of wheel, has further realized that the wheel rotates the effect that the process automobile body and sampling mechanism removed the same distance at every turn, ensures that sampling mechanism carries out the equidistance sample at every turn.

(2) In the process of sampling soil by the sampling mechanism, the descending distance of the cylinder and the helical blade is constant, namely the depth of the cylinder and the helical blade inserted into the soil is constant, the helical blade is inserted into the soil in a rotating state, so the soil filled in the cylinder every time is the same, in the process of ascending and resetting of the cylinder and the helical blade, the helical blade continuously rotates and pushes all the soil in the cylinder out from the discharge port, and the pushed soil slides to the second guide plate through the material blocking cloth and finally falls into the material storage tank, so that the soil collected every time is the same in quantity; the in-process of helical blade release drum with soil is constantly dredged the discharge gate through dredging the pole and dredging the piece, has guaranteed that soil can pass through smoothly from the discharge gate, avoids soil to block up the condition appearance inside the drum, has further guaranteed that the soil volume of gathering at every turn is the same, has improved the accuracy of sample.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic first perspective view of a rapid sampling device for pesticide residue detection according to an embodiment of the present invention.

Fig. 2 is a second schematic perspective view of the rapid sampling device for pesticide residue detection according to the embodiment of the invention.

Fig. 3 is an enlarged schematic view of a point a in fig. 2.

Fig. 4 is a third schematic perspective view of the rapid sampling device for pesticide residue detection in the embodiment of the present invention.

Fig. 5 is an enlarged schematic view of B in fig. 4.

Fig. 6 is a partial internal structural view of a horizontal shaft in an embodiment of the present invention.

Fig. 7 is a schematic view of a part of the internal structure of the wheel in the embodiment of the present invention.

FIG. 8 is a schematic view of a part of the internal structure of the cylinder in the embodiment of the present invention.

Fig. 9 is a schematic view illustrating a partial internal structure of a second material guiding plate according to an embodiment of the present invention.

Fig. 10 is a schematic view of the internal structure of the commutator in the embodiment of the present invention.

In the figure: 1. a vehicle body; 101. a storage tank; 102. a circular groove; 2. a horizontal axis; 201. a cutter groove; 202. a tool apron; 203. a blade; 204. a chute; 205. a slide sheet; 206. a first magnet bar; 207. an elastic cord; 208. a circular ring; 3. a wheel; 301. accommodating grooves; 302. cleaning the block; 303. an arc-shaped block; 304. a push rod; 305. a push block; 306. a tension spring; 307. a first magnet block; 4. a drive motor; 5. a strip plate; 6. a mud scraper; 7. a hydraulic cylinder; 8. a mud pushing plate; 9. a sampling mechanism; 901. a support arm; 902. a guide rail; 903. a lifting platform; 904. a connecting rod; 905. a circular table; 906. a cylinder; 907. a sampling motor; 908. a vertical axis; 909. a helical blade; 910. a discharge port; 911. a first material guide plate; 912. a second material guide plate; 913. a fixed mount; 914. dredging the rod; 915. dredging blocks; 916. a gear post; 917. installing a shaft; 918. a conical fluted disc; 919. a transmission gear; 920. an annular groove; 921. an electric slider; 922. a connecting arm; 923. a bevel gear ring; 924. adjusting the screw rod; 925. a top plate; 926. a winding shaft; 927. material blocking cloth; 10. a second magnet bar; 11. mounting a rod; 12. a second magnet block; 13. a commutator; 1301. a circular housing; 1302. a first bevel gear; 1303. a second bevel gear; 1304. a drive shaft; 1305. a third bevel gear; 1306. an electric telescopic rod; 1307. and a fourth bevel gear.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in fig. 1 and 5, the embodiment provides a rapid sampling device for pesticide residue detection, which includes a vehicle body 1, wherein a storage tank 101 for containing soil is formed on the upper surface of the vehicle body 1, two horizontal shafts 2 are rotatably mounted on left and right side walls of the vehicle body 1, wheels 3 are fixedly mounted on the horizontal shafts 2, and a driving motor 4 for driving the wheels 3 is mounted on the vehicle body 1 through a motor frame; evenly fixed mounting has a plurality of bar 5 on the periphery of wheel 3, equal fixed mounting has two vertical mud scrapers 6 on the lateral wall about automobile body 1, corresponds the equal fixed mounting in position of every mud scraper 6 on the lateral wall about automobile body 1 and has a horizontally pneumatic cylinder 7, and the flexible section tip fixed mounting of pneumatic cylinder 7 has the mud jack 8 that the perpendicular to corresponds mud scraper 6.

The driving motor 4 drives the wheels 3 and the horizontal shaft 2 to rotate periodically, so that the vehicle body 1 is driven to move in the field, and the number of turns of each rotation of the wheels 3 is the same, so that the distance of each movement of the vehicle body 1 in the field is constant; in the rotation process of the wheel 3, the strip-shaped plates 5 are inserted into soil to interact with the soil, so that the wheel 3 is prevented from slipping, and the smooth rotation of the wheel 3 is ensured; the mud on the surface of the strip-shaped plate 5 is scraped by the mud scraping plate 6, so that the situation that the mud is attached to the strip-shaped plate 5 to influence the insertion of the strip-shaped plate 5 into the soil is avoided; the mud scraper 6 is driven by the hydraulic cylinder 7 to push the mud scraper 8 to push attached mud on the mud scraper 6 away from the mud scraper 6 from the horizontal direction, so that the surface cleaning of the mud scraper 6 is ensured, and the mud scraper 6 can scrape the mud on the surface of the strip-shaped plate 5.

As shown in fig. 6, a knife slot 201 is formed on the circumferential surface of the horizontal shaft 2, a knife holder 202 is installed in the knife slot 201 in a sliding manner along the radial direction of the horizontal shaft 2, a blade 203 is fixedly installed on the outer side surface of the knife holder 202, the middle part of the inner side surface of the knife holder 202 is inclined, a sliding chute 204 communicated with the knife slot 201 is horizontally formed on the inner end surface of the horizontal shaft 2, a sliding sheet 205 is horizontally and movably installed in the sliding chute 204, one side end surface of the sliding sheet 205 is matched with the inclined part of the inner side surface of the knife holder 202, a first magnet strip 206 is fixedly installed on the other side end surface of the sliding sheet 205, a circular groove 102 coinciding with the axis of the inner end surface of the horizontal shaft 2 is formed in the vehicle body 1, and a second magnet strip 10 corresponding to the position of the first magnet strip 206 is fixedly installed on the groove wall of the circular groove 102; an elastic rope 207 is fixedly connected between the inner side surface of the cutter holder 202 and the groove wall of the cutter groove 201; the sliding piece 205 is embedded with a ring 208 which is in rolling fit with the inclined part of the inner side surface of the tool holder 202.

In the rotation process of the horizontal shaft 2, the sliding piece 205 and the first magnet bar 206 rotate synchronously, when the first magnet bar 206 rotates to a position corresponding to the second magnet bar 10, a mutual repulsion force is generated between the first magnet bar and the second magnet bar, the mutual repulsion force pushes the sliding piece 205, the first magnet bar 206 and the circular ring 208 to move horizontally along the sliding groove 204, the circular ring 208 pushes the tool holder 202 to move along the tool groove 201 to the outer side of the tool groove 201 while rolling on the inner side surface of the tool holder 202, the elastic rope 207 is stretched, and the blade 203 extends out of the tool groove 201; as the horizontal shaft 2 drives the first magnet bar 206 to continue rotating, the repulsive force between the first magnet bar 206 and the second magnet bar 10 disappears, the elastic rope 207 drives the tool apron 202 and the blade 203 to reset, and the sliding piece 205, the first magnet bar 206 and the circular ring 208 reset synchronously; when wheel 3 rotated, blade 203 constantly stretched out sword groove 201, and when the plant rhizome twined on horizontal axis 2, blade 203 can cut off the plant rhizome, avoided the plant rhizome to influence horizontal axis 2 and rotate, further guaranteed that wheel 3 rotates smoothly.

As shown in fig. 5 and 7, an accommodating groove 301 is formed in the circumferential surface of the wheel 3 at a position between two adjacent strip-shaped plates 5, a cleaning block 302 is slidably mounted in the accommodating groove 301 along the radial direction of the wheel 3, an arc-shaped block 303 is fixedly mounted on the surface of the cleaning block 302 facing the accommodating groove 301, a push rod 304 is slidably mounted on the wall of the accommodating groove 301 along the axial direction of the wheel 3, a push block 305 attached to the arc-shaped block 303 is fixedly mounted at the inner end of the push rod 304, and a telescopic spring 306 is fixedly connected between the cleaning block 302 and the wall of the accommodating groove 301; a first magnet block 307 is fixedly mounted at the outer end of the push rod 304, a mounting rod 11 is fixedly mounted on the left and right side walls of the vehicle body 1 at positions corresponding to each mud scraper 6, and a second magnet block 12 corresponding to the first magnet block 307 is fixedly mounted on the mounting rod 11.

The push rod 304 and the first magnet block 307 are driven to synchronously rotate in the rotation process of the wheel 3, when the first magnet block 307 rotates to a position corresponding to the second magnet block 12, mutual repulsion is generated between the first magnet block 307 and the second magnet block, the push rod 304 and the push block 305 are pushed to horizontally move under the action of the mutual repulsion, the push block 305 pushes the arc-shaped block 303 and the cleaning block 302 to move towards the outer side of the accommodating groove 301, the telescopic spring 306 is stretched, and the cleaning block 302 pushes out soil filled between two adjacent strip-shaped plates 5 outwards; as the wheel 3 continues to rotate, the mutual repulsion force between the first magnet block 307 and the second magnet block 12 disappears, the extension spring 306 drives the arc-shaped block 303 and the cleaning block 302 to reset, and the first magnet block 307, the push rod 304 and the push block 305 reset synchronously; soil that the clearance piece 302 was released is scraped off with the mud scraper 6 back of contacting to avoid filling earth between two adjacent bar boards 5, further guaranteed that bar board 5 can insert soil smoothly, ensure that wheel 3 rotates smoothly.

As shown in fig. 1, fig. 2, fig. 8 and fig. 9, a sampling mechanism 9 is mounted on a vehicle body 1, the sampling mechanism 9 includes two support arms 901 fixedly mounted on a front section of the vehicle body 1, vertical guide rails 902 are fixedly mounted on the support arms 901, a lifting table 903 is vertically slidably mounted between the two guide rails 902, a plurality of connecting rods 904 are fixedly mounted on a bottom surface of the lifting table 903, a horizontal circular table 905 is fixedly mounted at bottom ends of the plurality of connecting rods 904 together, a cylinder 906 is vertically and fixedly mounted on a bottom surface of the circular table 905, a sampling motor 907 is fixedly mounted on a top surface of the circular table 905, the sampling motor 907 is a biaxial motor, a vertical shaft 908 which coincides with an axis of the cylinder 906 is vertically and fixedly mounted at a lower output end of the sampling motor 907, and a helical blade 909 is fixedly mounted on the vertical shaft 908; the output end of the top of the sampling motor 907 is provided with a vertical adjusting screw 924 through a commutator 13, a top plate 925 is fixedly arranged between the top ends of the two guide rails 902, the lifting platform 903 is provided with a through groove vertically penetrating through the lifting platform 903, and the adjusting screw 924 penetrates through the through groove and penetrates through the top plate 925 in a thread fit manner; a plurality of discharge ports 910 are uniformly formed in the cylinder 906 along the circumferential direction of the cylinder 906, an inclined first material guide plate 911 is fixedly installed on the outer wall of the cylinder 906 at a position below the discharge ports 910, an inclined second material guide plate 912 is fixedly installed on the top surface of the vehicle body 1 through a support, the upper end surface of the second material guide plate 912 is matched with the lower end surface of the first material guide plate 911, and the bottom end of the second material guide plate 912 is positioned above the material storage tank 101; the inside flexible material stopping cloth 927 that installs through the coiling axle 926 of second stock guide 912, be connected with the torsional spring between coiling axle 926 and the second stock guide 912, the tip fixed connection of material stopping cloth 927 is in first stock guide 911 bottom.

As shown in fig. 10, the commutator 13 includes a circular housing 1301 rotatably mounted on the top surface of the sampling motor 907, a first bevel gear 1302 is fixedly mounted on the output shaft at the top of the sampling motor 907, the bottom of the adjusting screw 924 is rotatably fitted with the circular housing 1301 and is fixedly mounted with a second bevel gear 1303, a transmission shaft 1304 is rotatably mounted on the inner wall of the circular housing 1301, and a third bevel gear 1305 engaged with the first bevel gear 1302 and the second bevel gear 1303 is fixedly mounted on the transmission shaft 1304; an electric telescopic rod 1306 is fixedly installed on the inner wall of the circular shell 1301, and a fourth bevel gear 1307 is fixedly installed at the end part of a telescopic section of the electric telescopic rod 1306; the commutator 13 works as follows: in the initial state, the fourth bevel gear 1307 is meshed with the first bevel gear 1302 and the second bevel gear 1303, when the output shaft above the sampling motor 907 rotates, the commutator 13 rotates integrally, and the adjusting screw 924 rotates in the same direction as the output shaft of the sampling motor 907; after the electric telescopic rod 1306 drives the fourth bevel gear 1307 to be separated from the first bevel gear 1302 and the second bevel gear 1303, the output shaft above the sampling motor 907 drives the first bevel gear 1302 to rotate when rotating, the first bevel gear 1302 drives the third bevel gear 1305 to rotate, the third bevel gear 1305 drives the second bevel gear 1303 and the adjusting screw 924 to rotate, at this moment, the circular housing 1301 is stationary, and the output shaft of the sampling motor 907 is reversely rotated with the adjusting screw 924.

Under the static state of the vehicle body 1, the sampling mechanism 9 samples soil in the field and conveys the sampled soil into the storage tank 101; firstly, the sampling motor 907 drives the vertical shaft 908, the spiral blade 909 and the adjusting screw 924 to synchronously rotate, the top plate 925 is in a fixed state, so the adjusting screw 924, the sampling motor 907, the circular table 905, the connecting rod 904, the lifting table 903, the cylinder 906, the vertical shaft 908 and the spiral blade 909 synchronously descend, the cylinder 906, the vertical shaft 908 and the spiral blade 909 are inserted into soil, and the vertical shaft 908 and the spiral blade 909 are in a rotating state, so the soil in the field can be conveyed upwards along the spiral blade 909 until the sampling motor 907 stops rotating, namely the cylinder 906, the vertical shaft 908 and the spiral blade 909 stop descending; the cylinder 906 drives the first material guide plate 911 to descend synchronously in the descending process, the first material guide plate 911 pulls the material blocking cloth 927 out of the second material guide plate 912, and the winding shaft 926 rotates synchronously; then, the sampling motor 907 drives the vertical shaft 908 and the helical blade 909 to rotate continuously, the reversing device adjusts the rotation direction of the adjusting screw 924, the adjusting screw 924 rotates reversely synchronously, the adjusting screw 924, the sampling motor 907, the circular truncated cone 905, the connecting rod 904, the lifting table 903, the cylinder 906, the vertical shaft 908 and the helical blade 909 ascend synchronously, the cylinder 906, the vertical shaft 908 and the helical blade 909 leave the soil, the soil in the cylinder 906 moves upwards under the conveying of the helical blade 909, the soil is pushed out of the cylinder 906 through the discharge port 910 and is stacked between the material blocking cloth 927 and the first material guide plate 911, the material blocking cloth 927 gradually retracts to the winding shaft 926 along with the gradual ascending of the first material guide plate 911, the soil gradually moves to the first material guide plate 911 until the first material guide plate 911 returns to a position flush with the second material guide plate 912, the soil moves to the second material guide plate 912 under the action of gravity, and finally falls into the storage tank 101; finally, the rotation direction of the adjusting screw 924 is adjusted through the commutator, so that the adjusting screw 924 rotates to be consistent with the rotation direction of the vertical shaft 908 and the helical blade 909 at the next time; the present embodiment can synchronously perform the sampling action of the cylinder 906 inserted into the soil and the helical blade 909 and synchronously perform the feeding action of the cylinder 906 separated from the soil and the helical blade 909, thereby realizing the effect of rapid sampling.

As shown in fig. 3, 4 and 8, a fixing frame 913 is installed on the circumferential surface of the circular truncated cone 905 at a position corresponding to each discharge port 910, a dredging rod 914 matched with the discharge port 910 is installed on the fixing frame 913, and a plurality of dredging blocks 915 are uniformly and fixedly installed on the dredging rod 914 along the circumferential direction; the dredging rod 914 is provided with threads on the surface and penetrates through the fixing frame 913 in a thread matching mode, and a gear column 916 which is superposed with the axis of the dredging rod 914 is fixedly arranged on the outer end surface of the dredging rod 914; a mounting shaft 917 parallel to the dredging rod 914 is rotatably mounted on the fixing frame 913, and a bevel gear disc 918 and a transmission gear 919 meshed with the gear column 916 are fixedly mounted on the mounting shaft 917; the circular truncated cone 905 is provided with an annular groove 920 on the circumferential surface, and is provided with a plurality of electric sliders 921 through the annular groove 920, and a horizontal connecting arm 922 is fixedly arranged on the electric sliders 921, and a horizontal bevel gear ring 923 is fixedly arranged at the outer end of the connecting arm 922 jointly, and the bevel gear ring 923 is meshed with a plurality of bevel gear discs 918.

During the soil upward transportation process is carried in the reversal of helical blade 909, drive linking arm 922 and awl ring gear 923 reciprocating rotation through electronic slider 921, awl ring gear 923 drives each awl fluted disc 918, installation axle 917 and drive gear 919 reciprocating rotation, drive gear column 916 and dredging rod 914 reciprocating rotation in-process of drive gear 919 reciprocating rotation, because dredging rod 914 and mount 913 screw-thread fit, axial reciprocating extension and retraction can be carried out with step to the reciprocating rotation in-process of dredging rod 914, thereby drive dredging block 915 inside and outside telescopic movement at discharge gate 910, dredge discharge gate 910, avoid soil blocking discharge gate 910.

The working process of the rapid sampling device for detecting pesticide residues in the embodiment is as follows: the driving motor 4 drives the wheels 3 and the horizontal shaft 2 to periodically rotate for a fixed number of turns, so that the vehicle body 1 is driven to move for the same distance in the field each time; in the rotation process of the wheel 3, the strip-shaped plates 5 are inserted into soil to interact with the soil, so that the wheel 3 is prevented from slipping, and the smooth rotation of the wheel 3 is ensured; wheel 3 rotates the in-process, strikes off the earth on strip-shaped plate 5 surface through mud scraper 6, and horizontal axis 2 rotates the in-process, cuts off the plant rhizome of winding on horizontal axis 2 through blade 203, avoids the plant rhizome to influence horizontal axis 2 and rotates, has further guaranteed that wheel 3 rotates smoothly.

When the vehicle body 1 is in a static state, the sampling motor 907 drives the vertical shaft 908, the spiral blade 909 and the adjusting screw 924 to synchronously rotate, the cylinder 906, the vertical shaft 908 and the spiral blade 909 are inserted into soil, and the soil in the field is conveyed upwards along the spiral blade 909 until the sampling motor 907 stops rotating, namely the cylinder 906, the vertical shaft 908 and the spiral blade 909 stop descending; then, the sampling motor 907 drives the vertical shaft 908 and the helical blade 909 to continue rotating, the adjusting screw 924 synchronously and reversely rotates under the action of the reverser 13, the cylinder 906, the vertical shaft 908 and the helical blade 909 leave the soil, the soil in the cylinder 906 continues to move upwards under the conveying of the helical blade 909, the soil is pushed out of the cylinder 906 through the discharge port 910 and is stacked between the material blocking cloth 927 and the first material guide plate 911, the material blocking cloth 927 is gradually retracted onto the winding shaft 926 along with the gradual ascending of the first material guide plate 911, the soil gradually moves onto the first material guide plate 911 until the first material guide plate 911 returns to a position which is flush with the second material guide plate 912, and the soil moves onto the second material guide plate 912 under the action of gravity and finally falls into the material storage tank 101.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a pesticide residue detects uses quick sampling device, includes automobile body (1), and storage silo (101) that are used for holding soil are offered to automobile body (1) upper surface, all rotate on the lateral wall about automobile body (1) and install two horizontal axes (2), and fixed mounting has wheel (3) on horizontal axis (2), installs driving motor (4) that are used for driving wheel (3) through the motor frame on automobile body (1), its characterized in that: a plurality of strip-shaped plates (5) are uniformly and fixedly installed on the circumferential surface of the wheel (3), two vertical mud scrapers (6) are fixedly installed on the left side wall and the right side wall of the vehicle body (1), horizontal hydraulic cylinders (7) are fixedly installed at positions, corresponding to the mud scrapers (6), on the left side wall and the right side wall of the vehicle body (1), and mud pushing plates (8) perpendicular to the corresponding mud scrapers (6) are fixedly installed at the end parts of telescopic sections of the hydraulic cylinders (7);

the sampling mechanism (9) is installed on the vehicle body (1), the sampling mechanism (9) comprises two support arms (901) fixedly installed on the front section face of the vehicle body (1), vertical guide rails (902) are fixedly installed on the support arms (901), a lifting platform (903) is vertically installed between the two guide rails (902) in a sliding mode, a plurality of connecting rods (904) are fixedly installed on the bottom face of the lifting platform (903), a horizontal round table (905) is jointly and fixedly installed at the bottom ends of the connecting rods (904), a cylinder (906) is vertically and fixedly installed on the bottom face of the round table (905), a sampling motor (907) is fixedly installed on the top face of the round table (905), a vertical shaft (908) coincident with the axis of the cylinder (906) is fixedly installed at the output end of the sampling motor (907), and a spiral blade (909) is fixedly installed on the vertical shaft (908); a plurality of discharge ports (910) are uniformly formed in the cylinder (906) along the circumferential direction of the cylinder, a first inclined guide plate (911) is fixedly mounted at a position below the discharge ports (910) on the outer wall of the cylinder (906), a second inclined guide plate (912) is fixedly mounted on the top surface of the vehicle body (1) through a support, the upper end surface of the second guide plate (912) is matched with the lower end surface of the first guide plate (911), and the bottom end of the second guide plate (912) is located above the material storage tank (101).

2. The rapid sampling device for pesticide residue detection as claimed in claim 1, wherein: knife groove (201) has been seted up on the periphery of horizontal axis (2), there is blade holder (202) along horizontal axis (2) radial slidable mounting in knife groove (201), fixed mounting has blade (203) on the lateral surface of blade holder (202), the medial surface middle part of blade holder (202) is the slope form, spout (204) of intercommunication knife groove (201) have been seted up to the level on the interior terminal surface of horizontal axis (2), horizontal slidable mounting has slider (205) in spout (204), one side terminal surface of slider (205) cooperatees with the medial surface slope part of blade holder (202), fixed mounting has first magnet strip (206) on the other side terminal surface of slider (205), circular slot (102) with horizontal axis (2) inner terminal surface axis coincidence have been seted up to the inside position that corresponds horizontal axis (2) of automobile body (1), fixed mounting has second magnet strip (10) that corresponds with first magnet strip (206) position on the cell wall of circular slot (102).

3. The rapid sampling device for pesticide residue detection as claimed in claim 2, characterized in that: an elastic rope (207) is fixedly connected between the inner side surface of the cutter holder (202) and the groove wall of the cutter groove (201); the sliding sheet (205) is embedded with a circular ring (208) which is in rolling fit with the inclined part of the inner side surface of the tool holder (202) in a rotating way.

4. The rapid sampling device for pesticide residue detection as claimed in claim 1, wherein: the wheel cleaning device is characterized in that a containing groove (301) is formed in the position, located between two adjacent strip-shaped plates (5), on the circumferential surface of the wheel (3), a cleaning block (302) is arranged in the containing groove (301) in a sliding mode along the radial direction of the wheel (3), an arc-shaped block (303) is fixedly arranged on the surface, facing the containing groove (301), of the cleaning block (302), a push rod (304) is arranged on the groove wall of the containing groove (301) in a sliding mode along the axial direction of the wheel (3), a push block (305) attached to the arc-shaped block (303) is fixedly arranged at the inner end of the push rod (304), and a telescopic spring (306) is fixedly connected between the cleaning block (302) and the groove wall of the containing groove (301); the outer end of the push rod (304) is fixedly provided with a first magnet block (307), the left side wall and the right side wall of the vehicle body (1) are fixedly provided with mounting rods (11) corresponding to the positions of the mud scrapers (6), and the mounting rods (11) are fixedly provided with second magnet blocks (12) corresponding to the positions of the first magnet blocks (307).

5. The rapid sampling device for pesticide residue detection as claimed in claim 1, wherein: the position that corresponds every discharge gate (910) on the periphery of round platform (905) all installs mount (913), installs dredging rod (914) with discharge gate (910) complex on mount (913), and even fixed mounting has a plurality of mediation piece (915) along its circumference on dredging rod (914).

6. The rapid sampling device for pesticide residue detection as claimed in claim 5, wherein: the dredging rod (914) is provided with threads on the surface and penetrates through the fixing frame (913) in a thread matching mode, and a gear column (916) which is superposed with the axis of the dredging rod (914) is fixedly arranged on the outer end surface of the dredging rod (914); the fixed frame (913) is rotatably provided with a mounting shaft (917) parallel to the dredging rod (914), and the mounting shaft (917) is fixedly provided with a bevel gear disc (918) and a transmission gear (919) meshed with the gear column (916).

7. The rapid sampling device for pesticide residue detection as claimed in claim 6, wherein: the circular truncated cone rotary table is characterized in that an annular groove (920) is formed in the circumferential surface of the circular truncated cone (905), a plurality of electric sliders (921) are installed through the annular groove (920), horizontal connecting arms (922) are fixedly installed on the electric sliders (921), horizontal bevel gear rings (923) are fixedly installed on the outer ends of the connecting arms (922) jointly, and the bevel gear rings (923) are meshed with the bevel gear rings (918).

8. The rapid sampling device for pesticide residue detection as claimed in claim 1, wherein: the sampling motor (907) is a double-shaft motor, a vertical adjusting screw (924) is mounted at the output end of the top of the sampling motor (907) through a commutator (13), a top plate (925) is fixedly mounted between the top ends of the two guide rails (902), a through groove which vertically penetrates through the lifting table (903) is formed in the lifting table (903), and the adjusting screw (924) penetrates through the through groove and penetrates through the top plate (925) in a thread fit mode; the flexible material blocking cloth (927) is installed inside the second material guide plate (912) through a winding shaft (926), a torsion spring is connected between the winding shaft (926) and the second material guide plate (912), and the end part of the material blocking cloth (927) is fixedly connected to the bottom end of the first material guide plate (911).

9. The rapid sampling device for pesticide residue detection as claimed in claim 8, wherein: the commutator (13) comprises a circular shell (1301) rotatably mounted on the top surface of a sampling motor (907), a first bevel gear (1302) is fixedly mounted on an output shaft at the top of the sampling motor (907), the bottom of an adjusting screw (924) is in rotating fit with the circular shell (1301) and is fixedly provided with a second bevel gear (1303), a transmission shaft (1304) is rotatably mounted on the inner wall of the circular shell (1301), and a third bevel gear (1305) meshed with the first bevel gear (1302) and the second bevel gear (1303) is fixedly mounted on the transmission shaft (1304); an electric telescopic rod (1306) is fixedly mounted on the inner wall of the circular shell (1301), and a fourth bevel gear (1307) is fixedly mounted at the end of a telescopic section of the electric telescopic rod (1306).