An automatic straw sampling device

Abstract

The invention discloses an automatic straw sampling device, wherein a drill bit is fixed on the head of a sampling tube, a collecting box is fixed on the sampling tube, a feeding device is installed on the sampling tube, a guiding device is installed on a fixed platform, and the fixed platform is installed on a supporting module. A power device comprises a rotary servo motor, a first coupling, a second coupling, a motor fixing bracket, an axial servo motor and a motor shaft sleeve. The rotary servo motor is fixed on a moving plate, the motor shaft sleeve is fixed on the motor shaft of the rotary servo motor through a key connection, the first coupling is connected to the motor shaft sleeve, the axial servo motor is fixed on the motor fixing bracket, the second coupling, the motor fixing bracket and the axial servo motor are fixed on the fixed platform, and the rotary servo motor is connected to the sampling tube through a gear transmission module. The automatic straw extraction device designed by the invention can replace traditional manual sampling, and solves the problems of high labor intensity and poor sampling environment of manual sampling.

Description

Technical Field

[0001] The invention relates to an automatic straw sampling device, belonging to the technical field of straw sampling. Background Art

[0002] Straw is the residual material produced during the growing season of crops. Improper handling can lead to problems such as smog pollution and fire. In recent years, with the development of biomass incineration technology, straw has been "turned into treasure" through incineration power generation and gasification.

[0003] In the operation and management of biomass power plants, fuel costs account for about 60% to 70% of the total cost of power generation. The accuracy of sample collection will play a crucial role in the quality inspection results.

[0004] Sampling technology is mainly used for core drilling detection of cement concrete and asphalt concrete in roads, airports, ports, docks, dams, etc., soil core sampling, geological and mineral resource exploration, etc. Since the characteristics of straw are quite different from those of cement concrete, soil, etc., it cannot be directly reused and needs to be independently developed according to actual conditions. In recent years, some researchers have invented a wool sample core sampler based on existing core sampling technology, and its structure has a certain reference value for straw sampling. At present, there are two main methods of straw core sampling: manual sampling and electric core drilling.

[0005] Electric straw coring technology has been used in the United States. Electric coring sampling is mostly manually operated, and due to the limited capacity of the drill tube, after drilling a few bags of samples, the straw in the tube needs to be removed from the drill bit before the operation can continue. This is not only inconvenient, but also affects the sampling speed.

[0006] Through literature search and industry research, we learned that there is no electric coring technology in China. The main sampling method in China is manual sampling. After the straw is baled, it is loaded on trucks and sent to power plants. After unloading, manual sampling is performed. Manual sampling is labor-intensive and it is difficult to drill into the middle of the straw bale. Therefore, the representativeness of the sample will be affected to a certain extent. At the same time, there are subjective factors and fraud risks in human operation, which easily leads to disputes over the determination of straw quality. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide an automated straw sampling device. In the present invention, a drill bit is fixed on the head of a sampling tube, a collecting box is fixed on the sampling tube, a feeding device is installed on the sampling tube, a guide device is installed on a fixed platform, and the fixed platform is installed on a supporting module. The power device comprises a rotary servo motor, a first coupling, a second coupling, a motor fixing bracket, an axial servo motor and a motor shaft sleeve. The rotary servo motor is fixed on a movable plate, and the motor shaft sleeve is fixed on the motor shaft of the rotary servo motor through a key connection. The first coupling is connected to the motor shaft sleeve, the axial servo motor is fixed on the motor fixing bracket, the second coupling, the motor fixing bracket and the axial servo motor are fixed on the fixed platform, and the rotary servo motor is connected to the sampling tube through a gear transmission module. The automatic straw extraction device designed by the present invention can replace traditional manual sampling, and solves the problems of high labor intensity and poor sampling environment of manual sampling.

[0008] Preferably, the present invention provides an automated straw sampling device, comprising a fixed platform, a feed box, a sampling barrel, a drill bit, a feeding device, a gear transmission module, a power unit, a support module, an identification module, a control and power module, and a guide device. The drill bit is fixed to the head of the sampling barrel, the feed box is fixed on the sampling barrel, the feeding device is installed on the sampling barrel, the guide device is installed on the fixed platform, and the fixed platform is installed on the support module. The power unit comprises a rotary servo motor, a first coupling, a second coupling, a motor fixing bracket, an axial servo motor and a motor shaft sleeve. The rotary servo motor is fixed on a movable plate, the motor shaft sleeve is fixed to the motor shaft of the rotary servo motor through a key connection, the first coupling is connected to the motor shaft sleeve, the axial servo motor is fixed on the motor fixing bracket, the second coupling, the motor fixing bracket, and the axial servo motor are fixed on the fixed platform, the rotary servo motor is connected to the sampling barrel through the gear transmission module, and the identification module is electrically connected to the control and power module.

[0009] Preferably, the guiding device includes a sampling tube bearing seat, a sampling tube bearing seat pad, a first screw fixed bearing seat, a transverse screw, a transverse linear guide, a transverse linear guide pad, a transverse screw nut seat, a movable plate, and a second screw fixed bearing seat. The axial servo motor is connected to the transverse screw through a second coupling, the movable plate is connected to the transverse screw through a transverse screw nut seat, the movable plate is fixed to the transverse linear guide through a transverse linear guide slider, the first screw fixed bearing seat and the second screw fixed bearing seat are fixed on both sides of the transverse screw, the first screw fixed bearing seat and the second screw fixed bearing seat are fixed on a fixed platform; the transverse linear guide is fixed on the transverse linear guide pad, and the transverse linear guide pad is fixed on the fixed platform; the sampling tube bearing seat is fixed on the sampling tube bearing seat pad, and the sampling tube bearing seat pad is fixed at the front end of the fixed platform; the center of the sampling tube bearing seat is connected at the same height as the center of the sampling tube.

[0010] Preferably, the feeding device includes a screw rod, a cutting head and a screw rod bearing fixing bracket, the screw rod head is fixed with a screw rod bearing fixing bracket, the tail of the screw rod passes through the collecting box and is connected to the first coupling; the screw rod bearing fixing bracket is fixed on the sampling tube.

[0011] Preferably, the gear transmission module includes a first bearing fixing plate, a second bearing fixing plate, a first gear group, a second gear group and a transmission shaft, the first bearing fixing plate and the second bearing fixing plate are fixed on the movable plate, the first sub-gear in the first gear group is rotatably connected to the transmission shaft, the second sub-gear in the first gear group is coaxially fixedly connected to the sampling tube; the third sub-gear in the second gear group is rotatably connected to the transmission shaft, and the fourth sub-gear in the second gear group is coaxially fixedly connected to the motor shaft sleeve; both ends of the transmission shaft are fixed on the first bearing fixing plate and the second bearing fixing plate, and the collection box is located between the first bearing fixing plate and the second bearing fixing plate.

[0012] Preferably, the support module includes a longitudinal linear guide, a mobile platform, a fixed box, a longitudinal linear guide slider, and a screw nut seat, wherein the fixed box is fixed on the mobile platform; the mobile platform is fixed on the ground rail; the fixed platform is slidingly connected to the longitudinal linear guide through the longitudinal linear guide slider, and the fixed platform is connected to the longitudinal screw through the screw nut seat.

[0013] Preferably, the control and power module comprises a longitudinal servo motor, a longitudinal lead screw and a transverse servo motor, wherein the longitudinal servo motor is fixed on the longitudinal lead screw and the transverse servo motor is fixed on the moving platform.

[0014] Preferably, it comprises a buckle for fixing the mobile platform on the ground rail, and the buckle is installed on the ground rail.

[0015] Preferably, the identification module includes a camera, and the camera is connected to the control box via a wire.

[0016] Preferably, a drag chain is included, which is fixed to the mobile platform by a plurality of bolts.

[0017] The beneficial effects achieved by the present invention are:

[0018] In the present invention, the drill bit is fixed on the head of the sampling tube, the collecting box is fixed on the sampling tube, the feeding device is installed on the sampling tube, the guide device is installed on the fixed platform, the fixed platform is installed on the supporting module, the power device includes a rotary servo motor, a first coupling, a second coupling, a motor fixing bracket, an axial servo motor and a motor shaft sleeve, the rotary servo motor is fixed on the moving plate, the motor shaft sleeve is fixed on the motor shaft of the rotary servo motor through a key connection, the first coupling is connected to the motor shaft sleeve, the axial servo motor is fixed on the motor fixing bracket, the second coupling, the motor fixing bracket, and the axial servo motor are fixed on the fixed platform, and the rotary servo motor is connected to the sampling tube through a gear transmission module. The straw automatic extraction device designed by the present invention can replace the traditional manual sampling, and solves the problems of high labor intensity and poor sampling environment of manual sampling. The present invention solves the problem that the middle part of the straw bag cannot be sampled, and improves the representativeness and accuracy of the sample. The automatic extraction of the present invention replaces the risk of subjective factors and fraud in manual sampling, and the determination of straw quality is more convincing and less likely to cause disputes. The overall structure of the invention is relatively simple and easy to use, and the parts used can be conveniently replaced and repaired.

[0019] The support module block in the present invention includes a fixed platform, a longitudinal linear guide, a mobile platform, a fixed box, a longitudinal linear guide slider, and a screw nut seat. The fixed box is fixed on the mobile platform; the mobile platform is fixed on the ground rail; the fixed platform is slidably connected to the longitudinal linear guide through the longitudinal linear guide slider, and the fixed platform is connected to the longitudinal screw through the screw nut seat. The guide device designed by the present invention adopts a cast iron ground rail and a spiral lifting screw device to adapt to most usage scenarios, and can be disassembled and assembled for easy carrying. The motors in the present invention all use servo motors, which have encoder feedback functions and are more accurate in action. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 is a structural diagram of some embodiments of the present application;

[0022] Figure 2 is a structural diagram of some embodiments of the present application;

[0023] Figure 3 is a structural diagram of a feeding device and a gear transmission module in some embodiments of the present application;

[0024] Figure 4 is a top view of a feeding device and a gear transmission module in some embodiments of the present application;

[0025] Figure 5 is a front view of a feeding device and a gear transmission module in some embodiments of the present application;

[0026] Figure 6 It is a top view of the screw rod and the screw rod bearing fixing bracket in some embodiments of the present application.

[0027] The meanings of the reference numerals are as follows: (1) fixed platform, (2) longitudinal linear guide rail, (3) control box, (4) wire, (5) ground rail, (6) mobile platform, (7) longitudinal servo motor, (8) camera, (9) longitudinal screw rod, (10) fixed box, (11) buckle, (12) longitudinal linear guide slider, (13) transverse servo motor, (14) drag chain, (15) rotary servo motor, (16) first bearing fixing plate, (17) first coupling, (18) collecting box, (19) second bearing fixing plate, (20) sampling tube, (21) sampling tube bearing seat, (22) drill bit, (23 ) sampling tube bearing seat pad, (24) first screw fixed bearing seat, (25) transverse screw, (26) transverse linear guide, (27) transverse linear guide pad, (28) transverse screw nut seat, (29) first gear set, (30) second gear set, (31) moving plate, (32) second screw fixed bearing seat, (33) second coupling, (34) motor fixed bracket, (35) axial servo motor, (36) transmission shaft, (37) transverse linear guide slider, (38) motor shaft sleeve, (39) screw rod, (40) cutting head, (41) screw rod bearing fixed bracket. DETAILED DESCRIPTION

[0028] To facilitate the technical solution of the application, some concepts involved in the application are first explained below.

[0029] It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention, they are only used to explain the relative position relationship and movement status of the various components under a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, if the descriptions of "first" and "second" etc. are involved in the present invention, they are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] See also Figure 1 The present application provides an automated straw sampling device, comprising a fixed platform 1, a material collection box 18, a sampling barrel 20, a drill bit 22, a feeding device, a gear transmission module, a power device, a support module, an identification module, a control and power module, and a guide device. The drill bit 22 is fixed to the head of the sampling barrel 20, the material collection box 18 is fixed to the sampling barrel 20, the feeding device is installed on the sampling barrel 20, the guide device is installed on the fixed platform 1, the fixed platform 1 is installed on the support module, and the power device includes a rotary servo motor 15, a first coupling 17, and a second coupling 33. , motor fixing bracket 34, axial servo motor 35 and motor shaft sleeve 38, the rotary servo motor 15 is fixed on the moving plate 31, the motor shaft sleeve 38 is fixed on the motor shaft of the rotary servo motor 15 through a key connection, the first coupling 17 is connected to the motor shaft sleeve 38, the axial servo motor 35 is fixed on the motor fixing bracket 34, the second coupling 33, the motor fixing bracket 34, and the axial servo motor 35 are fixed on the fixed platform 1, the rotary servo motor 15 is connected to the sampling barrel 20 through the gear transmission module, and the identification module is electrically connected to the control and power module. The device uses a drill bit and a sampling barrel to realize coring and sampling of vehicle-mounted straw bales; the device uses a power device to realize an automatic material extraction process instead of manual sampling; the device can realize random point sampling, can identify the truck material placement area and complete the generation of random sampling points; the sampling depth of the device is controllable, and the drilling depth can penetrate round and square bales of straw, and the sample material is more representative. The power device in the device can provide sufficient drilling capacity. The device can realize the simultaneous drilling and feeding process, and can extract multiple sampling points in a short time. The collection box in the device includes an automatic collection device, which can take the sampled materials at one time after the overall sampling is completed, avoiding manual damage during the material extraction process.

[0032] The support module is composed of a mobile platform 6 and a fixed box 10; the fixed box 10 is fixed on the mobile platform 6; the mobile platform 6 is fixed on the ground rail 5; the fixed box 10 is fixed on the mobile platform 6 by a plurality of bolts. A buckle 11 is provided on the ground rail 5, which can be locked on the ground rail 5 so that the mobile platform 6 cannot move at will. The fixed platform 1 is slidably connected to the longitudinal linear guide rail 2 through the longitudinal linear guide slider 12, and the fixed platform 1 is connected to the longitudinal screw 9 through the screw nut seat.

[0033] The guide device is composed of a longitudinal linear guide rail 2, a longitudinal screw rod 9, a ground rail 5 and a drag chain 14; the longitudinal linear guide rail 2 and the longitudinal screw rod 9 are fixed to the mobile platform 6 through a fixing box 10. The drag chain 14 is fixed to the mobile platform 6 by a plurality of bolts. The camera 8 is connected to the control box 3 through a wire 4.

[0034] The control box 3 is connected to the longitudinal servo motor 7, the transverse servo motor 13, the axial servo motor 35 and the rotary servo motor 15 through the wire 4; the longitudinal servo motor 7 is fixed on the longitudinal screw rod 9; the transverse servo motor 13 is fixed on the mobile platform 6, and the transverse servo motor 13 drives the mobile platform 6 to move on the ground rail 5.

[0035] The feeding device is composed of a screw rod 39, a cutting head 40 and a screw rod bearing fixing bracket 41; the head of the screw rod 39 is fixed with a screw rod bearing fixing bracket 41, and the tail of the screw rod 39 passes through the collecting box 18 and is connected to the first coupling 17; the screw rod bearing fixing bracket 41 is fixed to the sampling tube 20 by screws; the screw rod 39 and the cutting head 40 act on the inside of the sampling tube 20.

[0036] The gear transmission module is composed of a first bearing fixing plate 16, a second bearing fixing plate 19, a first gear set 29, a transmission shaft 36 and a second gear set 30; the first bearing fixing plate 16 is fixed on the moving plate 31; the second bearing fixing plate 19 is fixed on the moving plate 31;

[0037] The first gear set 29 is connected to the sampling barrel 20 and the transmission shaft 36. Specifically, the first sub-gear in the first gear set 29 is rotatably connected to the transmission shaft 36, and the second sub-gear in the first gear set 29 is connected to the sampling barrel 20.

[0038] The second gear set 30 is connected to the transmission shaft 36 and the motor shaft sleeve 38. Specifically, the third sub-gear in the second gear set 30 is rotatably connected to the transmission shaft 36, and the fourth sub-gear in the second gear set 30 is rotatably connected to the motor shaft sleeve 38; both ends of the transmission shaft 36 are fixed on the first bearing fixing plate 16 and the second bearing fixing plate 19.

[0039] The material collection module is composed of a material collection box 18; the material collection box 18 is fixed at the tail end of the sampling tube 20, and the material collection box 18 is located between the first bearing fixing plate 16 and the second bearing fixing plate 19; rotational power: the power device is provided by a rotary servo motor 15, a first coupling 17 and a motor shaft sleeve 38; the rotary servo motor 15 is fixed on the moving plate 31, and the motor shaft sleeve 38 is fixed on the motor shaft of the rotary servo motor 15 through a key connection; the first coupling 17 is connected to the motor shaft sleeve 38.

[0040] The propulsion power is provided by the axial servo motor 35, the motor fixing bracket 34 and the second coupling 33; the axial servo motor 35 is fixed on the motor fixing bracket 34; the motor fixing bracket 34 is fixed on the fixed platform 1; the axial servo motor 35 is connected to the transverse screw rod 25 through the second coupling 33.

[0041] The guide device is composed of a transverse screw nut seat 28, a sampling tube bearing seat 21, a sampling tube bearing seat cushion 23, a transverse linear guide 26, a transverse screw 25, a transverse linear guide cushion 27, a moving plate 31, an axial servo motor 35, a first screw fixed bearing seat 24 and a second screw fixed bearing seat 32;

[0042] The axial propulsion motor 35 is connected to the tail of the transverse screw 25; the movable plate 31 is connected to the transverse screw 25 through the transverse screw nut seat 28; the movable plate 31 is fixed on the transverse linear guide 26 through the transverse linear guide slider 37; the first screw fixed bearing seat 24 and the second screw fixed bearing seat 32 are fixed on both sides of the transverse screw 25; the first screw fixed bearing seat 24 and the second screw fixed bearing seat 32 are fixed on the fixed platform 1; the transverse linear guide 26 is fixed on the transverse linear guide pad 27; the transverse linear guide pad 27 is fixed on the fixed platform 1; the sampling tube bearing seat 21 is fixed on the sampling tube bearing seat pad 23; the sampling tube bearing seat pad 23 is fixed at the front end of the fixed platform 1; the center of the sampling tube bearing seat 21 is connected at the same height as the center of the sampling tube 20.

[0043] The technical solution of the present invention is as follows: when the vehicle carrying straw stops at the designated area, the recognition camera 8 takes a real-time video of the side of the truck and sends the image to the control box 3. The control box 3 identifies the vehicle and the material area on the vehicle, divides the material area into coordinates, generates the coordinates of the random points for this sampling, and converts them into analog signals that can be recognized by the servo controller and transmits them to the longitudinal servo motor 7 and the transverse servo motor 13. The longitudinal servo motor 7 and the transverse servo motor 13 send the sampling module sampling device, the feeding device, the gear transmission device, the collecting device, and the power device to the target position through the longitudinal linear guide 2 and the ground rail 5; after the control box 3 obtains the in-place feedback signal, it sends the drilling depth signal and speed signal to the axial servo motor 35, and sends the speed signal to the rotary servo motor 15; the axial servo motor 35 provides power to move forward in the direction of the straw bag, and at the same time the rotary servo motor 15 provides power to drive the spiral rod 39 and the cutting head 40 to rotate, and at the same time drives the sampling tube through the first gear group 29, the transmission shaft 36, and the second gear group 30. 20 and the drill bit 22 complete high-speed cutting of the straw bale, and the cut straw is transmitted to the collection box 18 at the rear end of the sampling tube 20 through the cutting head 40 and the spiral rod 39 to collect the straw sample drilled this time; after the axial servo motor 35 reaches the target location, it sends an in-position signal to the control box 3, and the control box 3 sends a retract command to the axial servo motor 35 to the axial starting position; after the axial servo motor 35 is in place, the rotary servo motor 15 stops, and the transverse servo motor 13 and the longitudinal servo motor 7 return to the starting position; the operator picks up the sample in the collection box 18 from the starting position to the sampling bag to complete a sampling process.

[0044] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0045] Those skilled in the art will readily appreciate other embodiments of the invention after considering the specification and practicing the invention invented herein. This application is intended to cover any variations, uses or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art that are not invented by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0046] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above are only specific implementation methods of the present application and are not used to limit the protection scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present application should be included in the protection scope of the present application.

Claims

1. An automated straw sampling device, characterized in that: The invention comprises a fixed platform (1), a material collection box (18), a sampling tube (20), a drill bit (22), a feeding device, a gear transmission module, a power device, a support module, an identification module, a control and power module, and a guide device. The drill bit (22) is fixed to the head of the sampling tube (20), the material collection box (18) is fixed to the sampling tube (20), the feeding device is installed on the sampling tube (20), the guide device is installed on the fixed platform (1), the fixed platform (1) is installed on the support module, and the power device comprises a rotary servo motor (15), a first coupling (17), a second coupling (33), a motor fixing bracket (34), An axial servo motor (35) and a motor shaft sleeve (38), the rotary servo motor (15) is fixed on the movable plate (31), the motor shaft sleeve (38) is fixed on the motor shaft of the rotary servo motor (15) through a key connection, the first coupling (17) is connected to the motor shaft sleeve (38), the axial servo motor (35) is fixed on the motor fixing bracket (34), the second coupling (33), the motor fixing bracket (34), and the axial servo motor (35) are fixed on the fixed platform (1), the rotary servo motor (15) is connected to the sampling cylinder (20) through a gear transmission module, and the identification module is electrically connected to the control and power module; The guide device comprises a sampling tube bearing seat (21), a sampling tube bearing seat cushion (23), a first screw fixed bearing seat (24), a transverse screw (25), a transverse linear guide (26), a transverse linear guide cushion (27), a transverse screw nut seat (28), a movable plate (31), and a second screw fixed bearing seat (32); an axial servo motor (35) is connected to the transverse screw (25) via a second coupling (33); the movable plate (31) is connected to the transverse screw (25) via a transverse screw nut seat (28); and the movable plate (31) is fixed to the transverse linear guide (26) via a transverse linear guide slider (37). The first screw rod fixed bearing seat (24) and the second screw rod fixed bearing seat (32) are fixed on both sides of the transverse screw rod (25), and the first screw rod fixed bearing seat (24) and the second screw rod fixed bearing seat (32) are fixed on the fixed platform (1); the transverse linear guide rail (26) is fixed on the transverse linear guide rail pad (27), and the transverse linear guide rail pad (27) is fixed on the fixed platform (1); the sampling tube bearing seat (21) is fixed on the sampling tube bearing seat pad (23), and the sampling tube bearing seat pad (23) is fixed on the front end of the fixed platform (1); the center of the sampling tube bearing seat (21) is connected to the center of the sampling tube (20) at the same height; The support module comprises a longitudinal linear guide rail (2), a mobile platform (6), a fixed box (10), a longitudinal linear guide rail slider (12), and a screw nut seat. The fixed box (10) is fixed on the mobile platform (6); the mobile platform (6) is fixed on the ground rail (5); the fixed platform (1) is slidably connected to the longitudinal linear guide rail (2) via the longitudinal linear guide rail slider (12), and the fixed platform (1) is connected to the longitudinal screw rod (9) via the screw nut seat.

2. The automatic straw sampling device according to claim 1, characterized in that: The feeding device comprises a screw rod (39), a cutting blade (40) and a screw rod bearing fixing bracket (41); the screw rod bearing fixing bracket (41) is fixed to the head of the screw rod (39); the tail of the screw rod (39) passes through the material collecting box (18) and is connected to the first coupling (17); the screw rod bearing fixing bracket (41) is fixed to the sampling tube (20).

3. The automatic straw sampling device according to claim 2, characterized in that: The gear transmission module comprises a first bearing fixing plate (16), a second bearing fixing plate (19), a first gear group (29), a second gear group (30) and a transmission shaft (36); the first bearing fixing plate (16) and the second bearing fixing plate (19) are fixed on a movable plate (31); a first sub-gear in the first gear group (29) is rotationally connected to the transmission shaft (36); a second sub-gear in the first gear group (29) is coaxially fixedly connected to a sampling tube (20); a third sub-gear in the second gear group (30) is rotationally connected to the transmission shaft (36); a fourth sub-gear in the second gear group (30) is coaxially fixedly connected to a motor shaft sleeve (38); two ends of the transmission shaft (36) are fixed on the first bearing fixing plate (16) and the second bearing fixing plate (19); and a material collecting box (18) is located between the first bearing fixing plate (16) and the second bearing fixing plate (19).

4. The automatic straw sampling device according to claim 1, characterized in that: The control and power module comprises a longitudinal servo motor (7), a longitudinal screw rod (9) and a transverse servo motor (13); the longitudinal servo motor (7) is fixed on the longitudinal screw rod (9), and the transverse servo motor (13) is fixed on the mobile platform (6).

5. The automatic straw sampling device according to claim 1, characterized in that: It comprises a buckle (11) for fixing the mobile platform (6) on the ground rail (5), and the buckle (11) is installed on the ground rail (5).

6. The automatic straw sampling device according to claim 1, characterized in that: The identification module comprises a camera (8), and the camera (8) is connected to the control box (3) via a wire (4).

7. The automatic straw sampling device according to claim 1, characterized in that: It comprises a drag chain (14), which is fixed to the mobile platform (6) by a plurality of bolts.

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