Bullet-streamline-imitating flexibly-cascaded drilling-in type granary sampler and sampling method

Abstract

The invention discloses a bullet streamline-imitating flexibly-cascaded drilling-in type granary sampler and a sampling method, and belongs to the technical field of agricultural product storage, the bullet streamline-imitating flexibly-cascaded drilling-in type granary sampler comprises a screw propulsion module and a cascaded driving assembly fixedly connected to the bottom of the screw propulsion module, and the output end of the cascaded driving assembly is fixedly connected with a plurality of rotating rods in sequence; a sampling bin assembly is propped against each rotating rod, and the top end of each sampling bin assembly is fixedly connected with the bottom of the cascade driving assembly or the bottom of the sampling bin assembly of the previous stage. According to the invention, the drilling resistance and manual intervention are obviously reduced through the bullet-imitated streamline drill bit design and the self-anchoring mechanism of the anchoring blades, and through the independent control of the modular cascade structure and the electromagnetic clutch, different granary depths and sampling requirements can be flexibly adapted, and the sampling accuracy and the working efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of agricultural product storage technology, and in particular to a bullet-shaped streamlined, flexibly cascaded drilling grain silo sampler and sampling method. Background Technology

[0002] Grain sampling is a core step in ensuring the effectiveness of grain quality supervision, and its process directly affects the reliability of test results. Traditional manual samplers use long sampling tubes (about 4-6 meters), which require repeated reversing of the tube to extract the grain, making the process cumbersome, inconvenient, and inefficient.

[0003] To address the shortcomings of manual sampling, automatic suction samplers use vacuum suction to directly draw grain into the container, avoiding tube reversal and improving operational convenience. However, this method tends to preferentially adsorb smaller particles and impurities during the suction process, thus reducing sampling accuracy. Especially in deep grain silos, manual deep sampling is difficult, labor-intensive, and inefficient, and the inaccuracy of the suction method further limits its applicability.

[0004] While non-suction insertion methods for sampling tubes can reduce sample distortion and improve accuracy, they still rely on manual operation to insert the tubes into designated positions, failing to completely alleviate the workload in deep grain silos. Automatic spiral samplers, as an improvement, utilize a spiral structure to automatically drill into the grain pile, enhancing sampling accuracy and significantly reducing workload. However, existing automatic spiral samplers have fixed volume and number of sampling structures, lacking scalability, resulting in insufficient flexibility and an inability to adapt to diverse grain silo environments and sampling needs.

[0005] Therefore, how to provide a flexible and expandable grain sampling structure is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a streamlined, flexibly cascaded, bullet-like drill-type grain silo sampler and sampling method to solve the problems in the prior art.

[0007] To achieve the above objectives, the present invention provides a bullet-inspired streamlined, flexibly cascaded drilling grain bin sampler and sampling method, comprising a helical propulsion module and a cascaded drive assembly fixedly connected to the bottom of the helical propulsion module. The output end of the cascaded drive assembly is sequentially fixedly connected to multiple rotating rods, each of which abuts against a sampling bin assembly. The top of the sampling bin assembly is fixedly connected to the bottom of the cascaded drive assembly or the bottom of the previous level sampling bin assembly.

[0008] Preferably, the spiral propulsion module includes a servo motor, a spiral drill bit assembly fixedly connected to the rotor end of the servo motor, and a circumferential anchoring assembly fixedly connected to the stator end of the servo motor. The spiral drill bit assembly has a bullet-shaped streamlined shape.

[0009] Preferably, the auger drill assembly includes a drill tip and a drill shank that are fixedly connected. Both the drill tip and the drill shank are provided with helical blades on their outer walls. The top of the inner wall of the drill shank is fixedly connected to the rotor end of the servo motor.

[0010] Preferably, the circumferential anchoring assembly includes a first cylinder and a sleeve fixedly connected to the outer wall of the first cylinder. A base is fixedly connected to the top of the first cylinder, and the top of the base is fixedly connected to the stator end of the servo motor. Multiple anchoring blades are circumferentially arranged on the outer wall of the sleeve.

[0011] Preferably, the cascaded drive assembly includes a second cylinder, a coupling, and a stepper motor fixedly disposed at the bottom of the first cylinder. One end of the coupling is fixedly connected to the rotating shaft of the stepper motor, and the other end of the coupling is fixedly connected to the rotating rod. The top of the second cylinder is fixedly connected to the bottom of the sleeve, and the second cylinder is wrapped around the coupling and the stepper motor.

[0012] Preferably, the sampling chamber assembly includes a fixed chamber and a shaft-coupled electromagnetic clutch with a central opening. The top of the fixed chamber is fixedly connected to the bottom of the second cylinder or the bottom of the previous fixed chamber. The stator end of the shaft-coupled electromagnetic clutch is fixedly connected to the top of the inner wall of the fixed chamber. The rotating rod passes through the fixed chamber and the shaft-coupled electromagnetic clutch.

[0013] Preferably, the fixed chamber has an opening on its side, and the rotor end of the shaft-coupled electromagnetic clutch is fixedly connected to a movable door. The outer side of the movable door abuts against the inner wall of the opening, and the size of the side wall of the movable door is larger than the side opening of the fixed chamber.

[0014] Preferably, the top and bottom of the fixed chamber are provided with openings through which the rotating rod can pass.

[0015] This invention, based on the aforementioned streamlined, flexibly cascaded, bullet-like drill-type grain bin sampler, provides a sampling method comprising the following steps:

[0016] (1) Place the auger drill bit assembly on the surface of the grain pile, manually hold the anchor blade for circumferential fixation, start the servo motor to drive the auger drill bit assembly to rotate and drill, and release the manual constraint after the anchor blade is buried in the grain pile, and enter the self-driven drilling mode.

[0017] (2) After reaching the target depth, start the stepper motor to drive all rotating rods to rotate, and at the same time energize the shaft-coupled electromagnetic clutch of the target sampling chamber assembly. After energizing, the shaft-coupled electromagnetic clutch engages and fixes with the rotating rod, driving the movable door to rotate and open, and the grain flows naturally into the fixed chamber through the side opening of the fixed chamber.

[0018] (3) After sampling is completed, keep the shaft-coupled electromagnetic clutch of the target sampling chamber assembly energized, control the stepper motor to reverse, and drive the rotating rod to rotate the movable door in the opposite direction to close through the shaft-coupled electromagnetic clutch, thus completing the sampling.

[0019] Therefore, the present invention, a streamlined, flexibly cascaded, bullet-like drilling-type grain silo sampler and sampling method, has the following beneficial effects:

[0020] (1) The spiral drill bit assembly with a bullet-like streamlined design greatly reduces the resistance when drilling into the grain pile; combined with the servo motor drive and the self-anchoring mechanism of the anchoring blade (autonomously fixed after being buried in the grain pile), it achieves efficient self-driven drilling with a large drilling depth and high drilling efficiency.

[0021] (2) It adopts a cascaded modular structure, which can flexibly add multiple sampling bin components according to the actual grain warehouse depth and the number of sampling points required; through the independent control mechanism of the shaft-coupled electromagnetic clutch, it can adapt to different sampling requirements and significantly improve the applicability and operational flexibility of the equipment.

[0022] (3) After the active door is opened, the grain flows in naturally through the side opening of the fixed warehouse, forming an almost static sampling environment, which preserves the original composition of the sample to the greatest extent.

[0023] (4) In the early stage of drilling, only manual fixation of the anchor blade is required for a short time. After being buried in the grain pile, it is switched to self-driving mode. The sampling process is automatically completed by stepper motor and electromagnetic clutch to open and close the warehouse door. The whole process greatly reduces manual intervention and physical consumption, and solves the problems of high intensity and low efficiency in deep warehouse operations.

[0024] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0025] Figure 1 Cross-sectional view of an embodiment of the present invention Figure 1 ;

[0026] Figure 2 Cross-sectional view of an embodiment of the present invention Figure 2 ;

[0027] Figure 3 This is a schematic diagram of the overall appearance of an embodiment of the present invention;

[0028] Figure 4This is a disassembled diagram of the spiral propulsion module structure according to an embodiment of the present invention;

[0029] Figure 5 This is a structural disassembly diagram of the cascaded drive assembly and the sampling chamber assembly according to an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the open state of the movable door according to an embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the closed state of the movable door according to an embodiment of the present invention;

[0032] Figure label:

[0033] 1. Spiral propulsion module; 11. Spiral drill bit assembly; 1101. Drill tip; 1102. Drill shank; 1103. Spiral blade; 12. Servo motor; 13. Circumferential anchoring assembly; 1301. Base; 1302. First cylinder; 1303. Sleeve; 1304. Anchoring blade; 2. Cascade drive assembly; 21. Second cylinder; 22. Stepper motor; 23. Coupling; 3. Rotating rod; 4. Sampling chamber assembly; 41. Fixed chamber; 42. Shaft-coupled electromagnetic clutch; 43. Movable door. Detailed Implementation

[0034] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0036] Example

[0037] like Figures 1-7 As shown, the present invention provides a bullet-shaped streamlined, flexibly cascaded drilling grain bin sampler, comprising a helical propulsion module 1 and a cascaded drive assembly 2 fixedly connected to the bottom of the helical propulsion module 1 (via studs). The output end of the cascaded drive assembly 2 is sequentially fixedly connected to multiple rotating rods 3 (the output end of the cascaded drive assembly 2 is fixedly connected to the first rotating rod 3, and to each subsequent rotating rod 3, using conventional studs). Each rotating rod 3 abuts against a sampling chamber assembly 4, that is, the rotating rod 3 passes through multiple sampling chamber assemblies 4, transmitting the torque of the cascaded drive assembly 2 to the sampling chamber assembly 4; the top of the sampling chamber assembly 4 is fixedly connected to the bottom of the cascaded drive assembly 2 or the bottom of the previous sampling chamber assembly 4.

[0038] The spiral propulsion module 1 includes a servo motor 12, a spiral drill bit assembly 11 fixedly connected to the rotor end of the servo motor 12 (via studs), and a circumferential anchoring assembly 13 fixedly connected to the stator end of the servo motor 12 (via studs). The spiral drill bit assembly 11 serves as a propeller for drilling into the grain pile, and is powered by the high-torque servo motor 12. The servo motor 12 can be remotely controlled by a host computer to adjust its speed or torque.

[0039] The auger drill bit assembly 11 adopts a bullet-shaped streamlined design to reduce drilling resistance. In this embodiment, the streamlined features of the bullet head are proportionally enlarged to form the main body of the auger drill bit. Helical blades 1103 are added to this streamlined design to form a helical structure. The auger drill bit assembly 11 includes a drill tip 1101 and a drill shank 1102 fixedly connected (by studs). Helical blades 1103 are provided on the outer walls of both the drill tip 1101 and the drill shank 1102. The top of the inner wall of the drill shank 1102 is fixedly connected to the rotor end of the servo motor 12 by studs. The purpose of dividing the auger drill bit assembly 11 into a drill tip 1101 and a drill shank 1102 is to facilitate the installation of the servo motor 12.

[0040] The circumferential anchoring assembly 13 includes a base 1301, a first cylinder 1302, a sleeve 1303, and anchoring blades 1304. The top of the first cylinder 1302 is fixedly connected to the base 1301 by studs, and the top of the base 1301 is fixedly connected to the stator end of the servo motor 12 by studs. The outer wall of the first cylinder 1302 is fixedly connected to the sleeve 1303 by studs. The outer wall of the sleeve 1303 is circumferentially provided with multiple anchoring blades 1304 (to prevent circumferential rotation). In this embodiment, the sleeve 1303 and the anchoring blades 1304 are set as an integral structure, and there are three anchoring blades 1304.

[0041] When the anchor blade 1304 is buried in the grain pile, the grain spontaneously constrains the anchor blade 1304, thereby limiting the circumferential rotation of the stator end of the servo motor 12, ensuring that the torque is completely converted into drilling force, and can achieve autonomous drilling in conjunction with the auger drill bit assembly 11.

[0042] The cascaded drive assembly 2 is used to control the rotation of the rotating rod 3, driving the opening and closing of the movable door 43 in the sampling chamber assembly 4. It includes a second cylinder 21, a coupling 23, and a stepper motor 22 fixedly installed at the bottom of the first cylinder 1302 (providing precise rotational force to control the rotation of the rotating rod 3). One end of the coupling 23 is fixedly connected to the rotating shaft of the stepper motor 22, and the other end of the coupling 23 is fixedly connected to the rotating rod 3. The top of the second cylinder 21 (the top of the side wall in this embodiment) is fixedly connected to the bottom (bottom of the inner wall) of the sleeve 1303. The second cylinder 21 is wrapped around the coupling 23 and the stepper motor 22. The second cylinder 21 can be configured to have no bottom at either the top or bottom to isolate the stepper motor 22 from the grain.

[0043] In this embodiment, the coupling 23 is configured as a cylinder with a D-shaped through hole (conventional D-type coupling 23) to prevent the connected shaft (rotating rod 3) from rotating relative to each other or slipping in the hole of the coupling 23.

[0044] The sampling chamber assembly 4 includes a fixed chamber 41 (containing grain), a movable door 43, and a shaft-coupled electromagnetic clutch 42 with a central opening. The top of the fixed chamber 41 is fixedly connected to the bottom of the second cylinder 21 or the bottom of the upper-level fixed chamber 41 by studs. The stator end of the shaft-coupled electromagnetic clutch 42 is fixedly connected to the top of the inner wall of the fixed chamber 41 by conventional means. The rotating rod 3 passes through the fixed chamber 41 and the shaft-coupled electromagnetic clutch 42. The top and bottom of the fixed chamber 41 are provided with openings through which the rotating rod 3 can pass.

[0045] The fixed chamber 41 has an opening on its side. The rotor end of the shaft-coupled electromagnetic clutch 42 is fixedly connected to a movable door 43 in a conventional manner. The outer side of the movable door 43 abuts against the inner wall of the opening. The size of the side wall of the movable door 43 is larger than the side opening of the fixed chamber 41. In addition, in order to facilitate the lead-out of the wires of the shaft-coupled electromagnetic clutch 42, the fixed chamber 41 needs to be higher than the movable door 43.

[0046] The shaft-coupled electromagnetic clutch 42 is used to control the synchronous rotation of the rotating rod 3 and the rotor end of the shaft-coupled electromagnetic clutch 42, or the free rotation of the rotating rod 3. When the shaft-coupled electromagnetic clutch 42 is energized, the rotating rod 3 is engaged and fixed with the rotor end of the shaft-coupled electromagnetic clutch 42. At this time, the stepper motor 22 can drive the movable door 43 at the rotor end to rotate, realizing the opening and closing of the compartment door. When the shaft-coupled electromagnetic clutch 42 is de-energized, the rotating rod 3 is disengaged from the shaft-coupled electromagnetic clutch 42. At this time, the rotating rod 3 can rotate freely under the control of the stepper motor 22, while the movable door 43 at the rotor end remains stationary. This embodiment uses a conventional jaw-type electromagnetic clutch or a friction plate-type electromagnetic clutch.

[0047] In this embodiment, the sampling chamber assembly 4 is configured with two components. Both the fixed chamber 41 and the movable door 43 adopt a hollow semi-cylindrical structure. The fixed chamber 41 is fixed and does not rotate, while the movable door 43 is selectively driven to rotate by a stepper motor 22 and a shaft-coupled electromagnetic clutch 42 to achieve opening and closing. When the movable door 43 is opened, the grain flows spontaneously through the side opening to fill the space of the fixed chamber 41. The sampling method is approximately static sampling, which can better ensure accuracy.

[0048] The steps for cascading the sampling chamber assembly 4 are as follows:

[0049] (1) Connect the new rotating rod 3 to the end of the previous rotating rod 3 (or the coupling 23 of the cascade drive assembly 2) by means of a stud (or other conventional fixing method);

[0050] (2) Insert the fixed chamber 41 of the new sampling chamber assembly 4 and the shaft-connected electromagnetic clutch 42 into the new rotating rod 3;

[0051] (3) Use studs (or other conventional fixing methods) to fix the top of the fixed chamber 41 to the bottom of the previous fixed chamber 41 (or the bottom of the second cylinder 21 of the cascaded drive assembly 2);

[0052] (4) Repeating the above steps can achieve flexible expansion of the sampling chamber component 4.

[0053] When multiple sampling chamber components 4 are cascaded, all rotating rods 3 can be driven to rotate synchronously by stepper motor 22, energizing the shaft-connected electromagnetic clutch 42 of the target chamber and de-energizing the other chambers. At this time, only the movable door 43 of the energized chamber will move, thereby realizing independent control and independent sampling of each sampling chamber component 4.

[0054] The sampling method for the aforementioned streamlined, flexibly cascaded, bullet-like drill-type grain bin sampler is as follows:

[0055] (1) Drilling stage: Place the spiral drill bit assembly 11 on the surface of the grain pile, manually hold the anchor blade 1304 for circumferential fixation, start the servo motor 12 to drive the spiral drill bit assembly 11 to rotate and drill. When the anchor blade 1304 is buried in the grain pile, release the manual constraint. At this time, the grain pile autonomously restricts the rotation of the stator end of the servo motor 12 and enters the self-driven drilling mode.

[0056] (2) Sampling selection: After reaching the target depth, the stepper motor 22 is started to drive all the rotating rods 3 to rotate. At the same time, the shaft-coupled electromagnetic clutch 42 of the target sampling chamber assembly 4 is energized. After being energized, the shaft-coupled electromagnetic clutch 42 is engaged and fixed with the rotating rods 3. The rotating rods 3 drive the movable door 43 to rotate and open through the shaft-coupled electromagnetic clutch 42. The grain flows naturally into the fixed chamber 41 through the side opening of the fixed chamber 41. The shaft-coupled electromagnetic clutch 42 that is not energized is in a disengaged state from the rotating rods 3, and the movable door 43 of the sampling chamber assembly 4 remains closed.

[0057] (3) Close the chamber door: After the target sampling chamber assembly 4 has finished sampling, keep the shaft-coupled electromagnetic clutch 42 of the target sampling chamber assembly 4 energized, control the stepper motor 22 to reverse, and the rotating rod 3 drives the movable door 43 to rotate in the opposite direction and close through the shaft-coupled electromagnetic clutch 42, thus completing the sampling.

[0058] Therefore, this invention provides a bullet-inspired streamlined, flexibly cascaded drilling-type grain silo sampler and sampling method. The bullet-inspired streamlined drill bit design significantly reduces drilling resistance, and a self-anchoring mechanism enables efficient deep silo drilling. The selective energization control of the cascaded sampling chamber components and the shaft-connected electromagnetic clutch solves the problem of insufficient flexibility in traditional equipment, enabling independent sampling at multiple depths. The static sampling method, where grain flows in naturally after the rotating door opens, maximizes the preservation of the original sample composition. The automated drilling and sampling process significantly reduces manual labor intensity, overcoming the problems of low efficiency and poor accuracy in deep grain silo operations, and providing efficient and reliable technical support for grain quality supervision.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A streamlined, flexibly cascaded, bullet-like drill-type grain bin sampler, characterized in that: It includes a helical propulsion module and a cascaded drive assembly fixedly connected to the bottom of the helical propulsion module. The output end of the cascaded drive assembly is sequentially fixedly connected to multiple rotating rods. Each rotating rod abuts against a sampling chamber assembly. The top of the sampling chamber assembly is fixedly connected to the bottom of the cascaded drive assembly or the bottom of the previous level sampling chamber assembly.

2. The streamlined, flexibly cascaded, bullet-like drill-type grain bin sampler according to claim 1, characterized in that: The spiral propulsion module includes a servo motor, a spiral drill bit assembly fixedly connected to the rotor end of the servo motor, and a circumferential anchoring assembly fixedly connected to the stator end of the servo motor. The spiral drill bit assembly has a bullet-shaped streamlined shape.

3. A streamlined, flexibly cascaded, bullet-like drill-type grain bin sampler according to claim 2, characterized in that: The auger drill bit assembly includes a drill tip and a drill shank that are fixedly connected. Both the drill tip and the drill shank have helical blades on their outer walls. The top of the inner wall of the drill shank is fixedly connected to the rotor end of the servo motor.

4. A streamlined, flexibly cascaded, bullet-like drill-type grain bin sampler according to claim 2, characterized in that: The circumferential anchoring assembly includes a first cylinder and a sleeve fixedly connected to the outer wall of the first cylinder. A base is fixedly connected to the top of the first cylinder, and the top of the base is fixedly connected to the stator end of the servo motor. Multiple anchoring blades are circumferentially arranged on the outer wall of the sleeve.

5. A streamlined, flexibly cascaded, bullet-like drill-type grain bin sampler according to claim 4, characterized in that: The cascaded drive assembly includes a second cylinder, a coupling, and a stepper motor fixedly mounted at the bottom of the first cylinder. One end of the coupling is fixedly connected to the rotating shaft of the stepper motor, and the other end of the coupling is fixedly connected to the rotating rod. The top of the second cylinder is fixedly connected to the sleeve, and the second cylinder is wrapped around the coupling and the stepper motor.

6. A streamlined, flexibly cascaded, bullet-like drill-type grain bin sampler according to claim 5, characterized in that: The sampling chamber assembly includes a fixed chamber and a shaft-coupled electromagnetic clutch with a central opening. The top of the fixed chamber is fixedly connected to the bottom of the second cylinder or the bottom of the previous fixed chamber. The stator end of the shaft-coupled electromagnetic clutch is fixedly connected to the top of the inner wall of the fixed chamber. The rotating rod passes through the fixed chamber and the shaft-coupled electromagnetic clutch.

7. A streamlined, flexibly cascaded, bullet-like drill-type grain bin sampler according to claim 6, characterized in that: The fixed chamber has an opening on its side, and the rotor end of the shaft-coupled electromagnetic clutch is fixedly connected to a movable door, the outer side of which abuts against the inner wall of the opening.

8. A streamlined, flexibly cascaded, bullet-like drill-type grain bin sampler according to claim 7, characterized in that: The top and bottom of the fixed chamber are provided with openings through which the rotating rod can pass.

9. A sampling method for a streamlined, flexibly cascaded, bullet-like drill-type grain silo sampler as described in any one of claims 1-8, characterized in that, Includes the following steps: (1) Place the auger drill bit assembly on the surface of the grain pile, manually hold the anchor blade for circumferential fixation, start the servo motor to drive the auger drill bit assembly to rotate and drill, and release the manual constraint after the anchor blade is buried in the grain pile, and enter the self-driven drilling mode. (2) After reaching the target depth, start the stepper motor to drive all rotating rods to rotate, and at the same time energize the shaft-coupled electromagnetic clutch of the target sampling chamber assembly. After energizing, the shaft-coupled electromagnetic clutch engages and fixes with the rotating rod, driving the movable door to rotate and open, and the grain flows naturally into the fixed chamber through the side opening of the fixed chamber. (3) After sampling is completed, keep the shaft-coupled electromagnetic clutch of the target sampling chamber assembly energized, control the stepper motor to reverse, and drive the rotating rod to rotate the movable door in the opposite direction to close through the shaft-coupled electromagnetic clutch, thus completing the sampling.

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