A deep sampler for grain storage

Abstract

This utility model provides a deep sampling device for grain storage, belonging to the technical field of grain storage sampling devices. It aims to solve the shortcomings of traditional manual sampling, which has limited depth, and existing automatic sampling machines, which require manual loading and unloading of sampling tubes, resulting in low efficiency and frequent connection problems. The sampling device includes a frame with a vertical lifting mechanism connected to a support. A rotating component driven by a rotary motor is mounted on the support, with an internal threaded interface at its lower end. A fixing clamp for securing the sampling tube is located on the frame below the rotating component. It can also be equipped with a screen, PLC control system, wireless remote control module, and limit sensors. Casters are located at the bottom of the frame. This utility model achieves automatic installation and removal of the sampling tube through the cooperation of the rotating component and the fixing clamp, improving sampling efficiency. Combined with the vertical lifting mechanism, it enables deep sampling, and is easy to operate and move, making it suitable for efficient sampling in the grain storage industry.

Description

Technical Field

[0001] This utility model relates to the technical field of grain storage samplers, specifically to a deep sampler for grain storage. Background Technology

[0002] Grain samplers are key equipment in the grain storage industry, primarily used to extract grain samples from grain warehouses to provide sample support for subsequent work such as moisture testing, impurity analysis, and quality assessment. Currently, there are two main problems with the sampling methods used in the industry:

[0003] 1. Traditional manual sampling: This method relies on manual hand-held sampling tools. Due to human limitations, the sampling depth is usually no more than 3 meters, making it impossible to obtain grain samples from deeper layers of the grain warehouse (such as 5-10 meters). This results in insufficient sample representativeness and affects the accuracy of the test results.

[0004] 2. Existing automatic sampling machines: Although they can achieve partial automation of sampling, the installation and removal of sampling tubes still need to be done manually. This is not only time-consuming and labor-intensive, reducing sampling efficiency, but also prone to problems such as sampling tube misalignment and loose threaded connections, which can cause the sampling tube to loosen or fall off during the sampling process, interrupting the sampling process and increasing operational risks.

[0005] Therefore, a sampler that can automatically load and unload sampling tubes and meet the needs of deep sampling is proposed to overcome the shortcomings of the existing technology. Utility Model Content

[0006] The present invention aims to solve the problems mentioned in the background art by providing a deep sampler for grain storage.

[0007] The specific technical solution is as follows:

[0008] A deep sampling device for grain storage includes a frame, on which a vertical lifting mechanism is provided. The vertical lifting mechanism is connected to a support. A rotating component driven by a rotary motor is provided on the support. The lower end of the rotating component is provided with an internal threaded interface. A fixing clamp is provided on the frame below the rotating component. The fixing clamp is used to fix the sampling tube.

[0009] In a preferred embodiment of this utility model, the rotating component includes a vertical guide cylinder, which is fixedly connected to the bracket. A rotating cylinder is rotatably fitted on the outer side of the guide cylinder, and a transmission gear is fixed on the rotating cylinder. The rotating motor is fixed on the bracket, and a drive gear is fixed at the output end of the rotating motor. The drive gear meshes with the transmission gear.

[0010] In a preferred embodiment of this utility model, the internal threaded interface is coaxially arranged with the guide cylinder, and the upper end of the sampling tube is threadedly connected to the internal threaded interface.

[0011] As a preferred embodiment of this utility model, the fixing clamp includes two fixed transverse slides, and two sliding clamps are provided between the two transverse slides. The opposing sides of the sliding clamps are provided with V-shaped clamping grooves. The sliding clamps are connected to a driving mechanism, and the driving mechanism drives the two sliding clamps to move towards each other or away from each other.

[0012] In a preferred embodiment of this utility model, the driving mechanism includes a lower limit plate and an upper limit plate. Both the lower limit plate and the upper limit plate are provided with vertical guide holes. Three horizontal elongated holes and a U-shaped slide groove are evenly distributed around the vertical guide holes. A four-bar linkage is provided between the lower limit plate and the upper limit plate. One end of the four-bar linkage is placed at the U-shaped slide groove and connected to an electric push rod. The other three ends correspond one-to-one with the horizontal elongated holes and slide along the corresponding horizontal elongated holes. The two transverse slide tracks are fixed to the upper end of the upper limit plate and are located on both sides of the vertical guide holes. The sliding clamp is connected to the end of the four-bar linkage on the same side through a connecting rod.

[0013] As a preferred embodiment of this utility model, the vertical lifting mechanism includes a driven wheel disposed at the top of the frame and a driving wheel disposed at the bottom of the frame. The driving wheel is connected to the lifting motor, and a synchronous belt is fitted between the driven wheel and the driving wheel. The bracket is connected to the synchronous belt.

[0014] In a preferred embodiment of this utility model, two vertical guide rails are fixed on the frame, and sliders are provided on the vertical guide rails, with the sliders connected to the bracket.

[0015] As a preferred embodiment of this utility model, it also includes a screen, a PLC control system, and a wireless remote control module, wherein the screen, the wireless remote control module, the rotary motor, and the vertical lifting mechanism are all connected to the PLC control system.

[0016] As a preferred embodiment of this utility model, limit sensors are provided on both the upper and lower parts of the frame, and the limit sensors are all connected to the PLC control system.

[0017] As a preferred embodiment of the present invention, the bottom of the frame is provided with casters, and a support is fixed at the end of the bottom of the frame away from the casters, the support being flush with the bottom of the casters.

[0018] This utility model has the following beneficial effects:

[0019] 1. Automatic loading and unloading of sampling tubes: Through the rotation of the rotating component and the clamping of the fixed clamping component, no manual intervention is required, the sampling time at a single point is significantly shortened, and the sampling efficiency is significantly improved.

[0020] 2. Meets the needs of deep sampling: The vertical lifting mechanism can drive the sampling tube to a depth of 5-10 meters in the grain warehouse to obtain deep grain samples, which are more representative.

[0021] 3. High connection and clamping stability: The internal thread interface is coaxial with the guide cylinder, and the V-shaped clamping groove of the fixed clamping part and the four-bar linkage drive ensure that the sampling tube is installed vertically and the connection is tight, avoiding loosening during the sampling process;

[0022] 4. Convenient and flexible operation: Wireless remote control and screen control are compatible with remote and on-site operation, and the casters make it easy to move the equipment in large grain warehouses, adapting to the needs of multi-point sampling;

[0023] 5. High equipment safety: Limit sensors prevent the support from overtravel, protecting core components such as rotary motors and lifting motors, and reducing maintenance costs. Attached Figure Description

[0024] Figure 1 A three-dimensional structural diagram of the grain silo deep sampler provided in this embodiment of the utility model. Figure 1 ;

[0025] Figure 2 A three-dimensional structural diagram of the grain silo deep sampler provided in this embodiment of the utility model. Figure 2 ;

[0026] Figure 3 A front view of the grain silo deep sampler provided in an embodiment of this utility model;

[0027] Figure 4 Right view of the grain silo deep sampler provided in this embodiment of the utility model;

[0028] Figure 5 A schematic diagram of the rotating component in the grain warehouse deep sampling device provided in this embodiment of the utility model;

[0029] Figure 6 for Figure 5 Cross-sectional view of AA in the middle;

[0030] Figure 7 A schematic diagram of the fixing clamp in the grain warehouse deep sampling device provided in this embodiment of the utility model;

[0031] Figure 8 A partial top view of the fixing clamp in the grain warehouse deep sampling device provided in this embodiment of the utility model;

[0032] Figure 9 Partial three-dimensional view of the fixing clamp in the deep grain sampler provided in this embodiment of the utility model Figure 1 ;

[0033] Figure 10A schematic diagram of the four-bar linkage in the deep grain sampler provided in this embodiment of the utility model;

[0034] Figure 11 Partial three-dimensional view of the fixing clamp in the deep grain sampler provided in this embodiment of the utility model Figure 2 ;

[0035] Figure 12 Partial three-dimensional view of the fixing clamp in the deep grain sampler provided in this embodiment of the utility model Figure 3 .

[0036] In the attached image:

[0037] 1. Frame; 2. Driven wheel; 3. Drive wheel; 4. Lifting motor; 5. Synchronous belt; 6. Vertical guide rail; 7. Slider; 8. Support; 9. Rotary motor; 10. Rotating component; 11. Guide cylinder; 12. Rotating cylinder; 13. Transmission gear; 14. Drive gear; 15. Internal thread interface; 16. Fixed clamping component; 17. Lower limit plate; 18. Upper limit plate; 19. Vertical guide hole; 20. Horizontal elongated hole; 21. U-shaped slide rail; 22. Four-bar linkage; 23. Electric push rod; 24. Horizontal slide rail; 25. Sliding clamp; 26. Connecting rod; 27. Screen; 28. PLC control system; 29. ​​Limit sensor; 30. Moving wheel; 31. Support. Detailed Implementation

[0038] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this application. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0040] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] Example

[0043] This embodiment provides a deep sampling device for grain storage, such as... Figures 1-12 As shown, the system includes a frame 1, on which a vertical lifting mechanism is mounted. This mechanism is connected to a support 8. A rotating component 10, driven by a rotary motor 9, is mounted on the support 8. The lower end of the rotating component 10 has an internal threaded interface 15. A fixing clamp 16 is mounted on the frame 1 below the rotating component 10 to secure the sampling tube. The vertical lifting mechanism can drive the sampling tube 5-10 meters deep into the grain silo to obtain deep grain samples, resulting in more representative samples.

[0044] By adopting the above technical solution, the installation and disassembly of the sampling tube can be completed manually by the coordinated action of the rotating part 10 and the fixed clamping part 16, avoiding the efficiency loss of manual operation, while ensuring the positioning accuracy of the sampling tube during installation, preventing sampling interruption caused by unstable manual connection, and significantly improving sampling efficiency.

[0045] Specifically, in this embodiment, the rotating component 10 includes a vertical guide cylinder 11, which is fixedly connected to the bracket 8. A rotating cylinder 12 is rotatably mounted on the outer side of the guide cylinder 11. A transmission gear 13 is fixed on the rotating cylinder 12. A rotating motor 9 is fixed on the bracket 8. A drive gear 14 is fixed at the output end of the rotating motor 9. The drive gear 14 meshes with the transmission gear 13.

[0046] By adopting the above technical solution, the power of the rotary motor 9 is stably transmitted to the rotary cylinder 12 through the meshing transmission of the "drive gear 14-transmission gear 13", ensuring that the rotary cylinder 12 rotates smoothly and the speed is controllable, avoiding jamming or shaking during rotation, and providing a stable power foundation for the precise threaded connection between the sampling tube and the internal thread interface 15.

[0047] Specifically, in this embodiment, the internal thread interface 15 is coaxially arranged with the guide cylinder 11, and the upper end of the sampling tube is threadedly connected to the internal thread interface 15.

[0048] By adopting the above technical solution, the coaxial design ensures that the sampling tube remains vertical after installation, avoids the deviation of the sampling path caused by the skewed sampling tube, prevents the sampling tube from colliding and being damaged by the inner wall of the grain silo or grain clumping, and at the same time ensures the coaxiality of the threaded connection, reduces thread wear, and extends the service life of the components.

[0049] Specifically, in this embodiment, the fixed clamping member 16 includes two fixed transverse slides 24, and two sliding clamps 25 are provided between the two transverse slides 24. V-shaped clamping grooves are provided on the opposite sides of the sliding clamps 25. The sliding clamps 25 are connected to the driving mechanism, and the driving mechanism drives the two sliding clamps 25 to move towards each other or away from each other.

[0050] The above technical solution allows the V-shaped clamping groove to accommodate sampling tubes of different diameters, improving the equipment's versatility. By limiting the movement direction of the sliding clamping plate 25 through the transverse slide 24, it is possible to ensure that the two clamping plates move synchronously towards or away from each other, thereby achieving centered clamping of the sampling tube and maintaining its verticality, thus providing positioning assurance for precise docking with the internal thread interface 15.

[0051] Specifically, in this embodiment, the driving mechanism includes a lower limit plate 17 and an upper limit plate 18. Both the lower limit plate 17 and the upper limit plate 18 are provided with vertical guide holes 19. Three horizontal elongated holes 20 and a U-shaped slide groove 21 are evenly distributed around the vertical guide holes 19. A four-bar linkage 22 connected end to end is provided between the lower limit plate 17 and the upper limit plate 18. One end of the four-bar linkage 22 is placed at the U-shaped slide groove 21 and connected to the electric push rod 23. The other three ends correspond one-to-one with the horizontal elongated holes 20 and slide along the corresponding horizontal elongated holes 20. Two transverse slides 24 are fixed to the upper end of the upper limit plate 18 and are located on both sides of the vertical guide holes 19. The sliding clamp 25 is connected to the end of the four-bar linkage 22 on the same side through a connecting rod 26.

[0052] Using the above technical solution, the four-bar linkage 22 structure can convert the linear power of the electric push rod 23 into the synchronous lateral movement of the sliding clamp 25, resulting in high transmission efficiency and uniform clamping force. By limiting the movement trajectory of the four-bar linkage 22 through the horizontal elongated hole 20 and the U-shaped slide groove 21, it is possible to avoid deviation during transmission, ensure that the clamping action of the sliding clamp 25 is stable and reliable, and prevent the sampling tube from falling off when clamped or released.

[0053] Specifically, in this embodiment, the vertical lifting mechanism includes a driven wheel 2 disposed at the top of the frame 1 and a driving wheel 3 disposed at the bottom of the frame 1. The driving wheel 3 is connected to the lifting motor 4. A synchronous belt 5 is fitted between the driven wheel 2 and the driving wheel 3. The bracket 8 is connected to the synchronous belt 5.

[0054] By adopting the above technical solution, the support 8 can be raised and lowered smoothly through the transmission structure of "lifting motor 4 - driving wheel 3 - synchronous belt 5 - driven wheel 2", and the lifting stroke is controllable. The synchronous belt 5 transmission has no slippage, ensuring that the lifting speed of the support 8 is uniform, providing stable vertical power for the sampling tube to rotate and move down for sampling, and meeting the needs of deep sampling.

[0055] It is worth noting that, for the convenience of demonstrating the drive wheel 3, an attached... Figure 2 The active wheel 3 was specially pulled out for display, but in reality, the active wheel 3 is hidden inside the deep sampler in the grain silo.

[0056] Specifically, in this embodiment, two vertical guide rails 6 are fixed on the frame 1, and sliders 7 are provided on the vertical guide rails 6. The sliders 7 are connected to the bracket 8.

[0057] By adopting the above technical solution, the vertical guide rail 6 and the slider 7 cooperate to limit the support 8 to move only vertically, so as to avoid the support 8 from swaying left and right or shifting forward and backward during the lifting process, and ensure that the rotating part 10 and the fixed clamping part 16 always remain vertically aligned, thereby further improving the stability of the sampling tube installation and sampling process.

[0058] Specifically, in this embodiment, it also includes a screen 27, a PLC control system 28, and a wireless remote control module. The screen 27, the wireless remote control module, the rotary motor 9, and the vertical lifting mechanism are all connected to the PLC control system 28. The screen 27 is a touch screen.

[0059] By adopting the above technical solution, the control logic of each component is integrated through the PLC control system 28, which can realize the automation of the sampling process; the screen 27 facilitates on-site parameter setting and working status monitoring, and the wireless remote control module supports remote operation, eliminating the need for operators to have close contact with the grain warehouse, thus improving operational safety and convenience, and adapting to the multi-point sampling needs of large-scale storage scenarios.

[0060] Specifically, in this embodiment, limit sensors 29 are provided on both the upper and lower parts of the frame 1, and the limit sensors 29 are connected to the PLC control system 28.

[0061] By adopting the above technical solution, the lifting position of the bracket 8 is monitored in real time by the limit sensor 29. When the bracket 8 reaches the upper or lower limit position, a signal is immediately sent to the PLC control system 28 to control the lifting motor 4 to stop working, so as to prevent the bracket 8 from moving beyond its range and causing damage to the components due to collision, thus protecting the equipment safety and reducing maintenance costs.

[0062] Specifically, in this embodiment, the bottom of the frame 1 is provided with a movable wheel 30, and a support 31 is fixed at the bottom of the frame 1 away from the movable wheel 30. The support 31 is flush with the bottom of the movable wheel 30.

[0063] The above technical solution provides convenient movement of the equipment by the set casters 30. By tilting the frame 1 to lift the support 31 off the ground, the equipment can be pushed to different sampling points without the need for external handling tools. The support 31 ensures the stability of the equipment when it is stationary and prevents the equipment from moving on its own during the sampling process, thus balancing the flexibility and stability of the equipment.

[0064] It is worth mentioning that, in practical applications, to ensure the coordinated and stable operation of all components of the equipment, the following models can be selected for the rotary motor 9, electric push rod 23, PLC control system 28, wireless remote control module, and limit sensor 29:

[0065] Rotary motor 9: The Dongfang Motor 5RK90GE-CW3TE+5GE30RA model is available. This is a reversible motor, belonging to the global standard K series, compatible with global voltages. Its mounting dimension is 90mm, and it is paired with a right-angle shaft solid shaft reducer with a reduction ratio of 30. This model has a terminal box, a rated time of 30 minutes, and an output power of 90W. In terms of voltage, it supports single-phase 220V / 50Hz / 0.83A, single-phase 220V / 60Hz / 0.96A, single-phase 230V / 50Hz / 0.83A, and single-phase 230V / 60Hz / 0.95A. The starting torque (motor shaft) remains stable under different voltage frequencies, such as 600mN·m for single-phase 220V / 50Hz. When installing the reducer, the speed also has specific parameters for different voltage frequencies, such as 50r / min for single-phase 220V / 50Hz. It has UL, CSA, GB and other standard certifications, carries the CE mark, and is equipped with an overheat protection device, which can provide reliable power for the stable rotation of the rotating part 10 and meet the requirements of this sampler for speed and torque.

[0066] Electric actuator (23): An XTL100 electric actuator can be used. This type of electric actuator is commonly used in industrial automation equipment. It can precisely actuate the fixed frame 24 through power supply, driving the slider 22 to move along the slide block 21. For example, in the automatic dotting device for protective film, the XTL100 electric actuator exhibits good stability and controllability, and can accurately realize the extension and retraction action according to the instructions, meeting the power requirements of the fixed clamping component 16 for clamping and releasing the sampling tube of the sliding clamp 25, ensuring the accuracy and timeliness of the action.

[0067] PLC Control System 28: The Delta AS228T PLC is a suitable choice. This model is specifically designed for motion axis control, supports 6 bus servos, adopts the CANOPEN communication protocol, and is suitable for medium to large-sized equipment. It features comprehensive automatic and manual control modes, can flexibly receive and process instructions from the screen 27 and the wireless remote control module, and precisely control the coordinated operation of devices such as the rotary motor 9, lifting motor 4, and electric actuator 23. Furthermore, this PLC model has an excellent fault handling mechanism, which can quickly diagnose and restore equipment operation, ensuring stable operation of the sampler in complex working environments.

[0068] Wireless remote control module: The EWD22S-YK02A interactive feedback remote control module from Ebitec is a suitable choice. It uses LoRa remote control, operates in the 410-493MHz frequency band, and operates at DC 6-9V. The module's casing is protected with a three-proof coating, effectively handling the complex dust and humidity environment inside the grain silo. When used with related equipment, it can achieve single-channel control. After connecting to the PLC control system 28, operators can remotely send commands within a certain distance to control the sampler's start, stop, parameter adjustments, and other operations. The transmission signal is stable, with strong anti-interference capabilities, and the effective remote control distance meets the operational needs within the grain silo.

[0069] Limit sensor 29: A reflective infrared limit sensor can be used, such as the common through-beam infrared sensor E3F-DS30C4. This model of sensor has a detection distance of up to 30cm and features high detection accuracy and reliability. After installation on the upper and lower parts of the frame 1, when the bracket 8 reaches the set limit position during lifting, the sensor can quickly detect the obstruction or reflection signal change of the bracket 8 and promptly send a signal to the PLC control system 28, causing the PLC to control the lifting motor 4 to stop working, preventing the bracket 8 from moving beyond its travel range, effectively protecting the equipment components from damage, and ensuring the safe operation of the equipment.

[0070] In summary, the working principle of the grain warehouse deep sampler provided in this embodiment is as follows:

[0071] 1. Equipment preparation: Push the equipment to the target sampling point, lower the frame 1 so that the support 31 touches the ground, start the equipment through the screen 27 or wireless remote control module, and set parameters such as sampling depth and rotation speed of the rotary motor 9.

[0072] 2. Sampling tube fixing: Place the sampling tube vertically at the vertical guide hole 19 of the fixing clamp 16 → PLC control system 28 controls the electric push rod 23 to retract → four-link rod 22 drives the sliding clamp 25 to move towards each other → V-shaped clamping groove clamps the sampling tube.

[0073] 3. Sampling tube connection: PLC controls the lifting motor 4 to rotate forward → bracket 8 moves down along the vertical guide rail 6 → at the same time, the rotating motor 9 starts → drive gear 14 drives transmission gear 13 → rotating cylinder 12 rotates → internal thread interface 15 connects with the external thread at the upper end of the sampling tube and tightens → electric push rod 23 extends → sliding clamp 25 releases the sampling tube.

[0074] 3. Deep sampling: The lifting motor 4 continues to rotate forward → the bracket 8 drives the rotating sampling tube to move downward → the sampling tube goes deep into the grain silo and the grain enters the sampling tube; after reaching the set sampling depth, the PLC controls the lifting motor 4 to reverse → the sampling tube rotates upward.

[0075] 4. Sampling tube disassembly: The sampling tube moves up to the initial position → the electric push rod 23 retracts → the sliding clamp 25 clamps the sampling tube again → the rotary motor 9 reverses → the internal thread interface 15 separates from the sampling tube thread → the lifting motor 4 drives the bracket 8 to move up and reset → the electric push rod 23 extends → the sampling tube is removed, completing one sampling.

[0076] How to use

[0077] 1. Equipment transfer: Manually tilt the frame 1 to lift the support 31 off the ground, push the equipment to the target sampling point inside the grain warehouse, lower the frame 1, and ensure that the support 31 and the moving wheels 30 land stably on the ground.

[0078] 2. Parameter setting: Input the sampling depth (e.g., 5 meters) and the rotation speed of the rotary motor 9 (e.g., 100 r / min) through the screen 27, or send the same parameter commands remotely through the wireless remote control module.

[0079] 3. Sampling tube placement: Place the clean sampling tube (with external threads at the top) vertically into the vertical guide hole 19 of the fixing clamp 16, ensuring that the lower end of the sampling tube is aligned with the grain silo sampling port.

[0080] 4. Automatic sampling: Press the "Start" button on screen 27 or the remote control → the device automatically completes the entire process of sampling tube clamping, connection, deep sampling, reset, and disassembly; during the process, screen 27 displays the sampling depth and motor working status in real time.

[0081] 5. Sample Acquisition and Equipment Cleaning: Remove the disassembled sampling tube and pour out the internal grain sample; use compressed air to blow away the sampling tube and fixing clamp 16 to remove residual grain; if further sampling is required, repeat steps 3-5; after all sampling is completed, turn off the equipment power and transfer it to the storage location.

[0082] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A deep grain probe comprising a frame (1) provided with a vertical lifting mechanism connected to a support (8), characterized in that: The bracket (8) is provided with a rotating component (10) driven by a rotary motor (9). The lower end of the rotating component (10) is provided with an internal thread interface (15). A fixing clamp (16) is provided on the frame (1) below the rotating component (10). The fixing clamp (16) is used to fix the sampling tube.

2. The grain silo deep core probe of claim 1, wherein: The rotating component (10) includes a vertical guide cylinder (11), which is fixedly connected to the bracket (8). A rotating cylinder (12) is rotatably mounted on the outer side of the guide cylinder (11). A transmission gear (13) is fixed on the rotating cylinder (12). The rotating motor (9) is fixed on the bracket (8). A drive gear (14) is fixed at the output end of the rotating motor (9). The drive gear (14) meshes with the transmission gear (13).

3. The grain silo deep core probe of claim 2, wherein: The internal threaded interface (15) is coaxially arranged with the guide cylinder (11), and the upper end of the sampling tube is threadedly connected to the internal threaded interface (15).

4. The grain silo deep core probe of claim 1, wherein: The fixed clamping member (16) includes two fixed transverse slides (24), and two sliding clamps (25) are provided between the two transverse slides (24). The opposing sides of the sliding clamps (25) are provided with V-shaped clamping grooves. The sliding clamps (25) are connected to the driving mechanism, and the driving mechanism drives the two sliding clamps (25) to move towards each other or away from each other.

5. The grain silo deep core probe of claim 4, wherein: The driving mechanism includes a lower limit plate (17) and an upper limit plate (18). Both the lower limit plate (17) and the upper limit plate (18) are provided with vertical guide holes (19). Three horizontal elongated holes (20) and a U-shaped slide groove (21) are evenly distributed around the vertical guide hole (19). A four-bar linkage (22) is provided between the lower limit plate (17) and the upper limit plate (18). One end of the four-bar linkage (22) is placed at the U-shaped slide groove (21) and connected to the electric push rod (23). The other three ends correspond one-to-one with the horizontal elongated holes (20) and slide along the corresponding horizontal elongated holes (20). The two transverse slides (24) are fixed to the upper end of the upper limit plate (18) and are located on both sides of the vertical guide hole (19). The sliding clamp (25) is connected to the end of the four-bar linkage (22) on the same side through a connecting rod (26).

6. The grain silo deep core probe of claim 1, wherein: The vertical lifting mechanism includes a driven wheel (2) located at the top of the frame (1) and a driving wheel (3) located at the bottom of the frame (1). The driving wheel (3) is connected to the lifting motor (4). A synchronous belt (5) is fitted between the driven wheel (2) and the driving wheel (3). The bracket (8) is connected to the synchronous belt (5).

7. The grain silo deep core probe of claim 1 or 6, wherein: Two vertical guide rails (6) are fixed on the frame (1), and a slider (7) is provided on the vertical guide rails (6). The slider (7) is connected to the bracket (8).

8. The grain silo deep core probe of claim 1, wherein: It also includes a screen (27), a PLC control system (28) and a wireless remote control module, wherein the screen (27), the wireless remote control module, the rotary motor (9) and the vertical lifting mechanism are all connected to the PLC control system (28).

9. The grain silo deep core probe of claim 8, wherein: Limit sensors (29) are provided on both the upper and lower parts of the frame (1), and the limit sensors (29) are connected to the PLC control system (28).

10. The grain silo deep core probe of claim 1, wherein: The bottom of the frame (1) is provided with a movable wheel (30), and a support (31) is fixed at the bottom of the frame (1) away from the movable wheel (30). The support (31) is flush with the bottom of the movable wheel (30).

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