A method and apparatus for determining the resistance of coated seeds to compression

Abstract

The present application relates to the technical fields of the anti-pressure test of pelleting coated seeds, and discloses a kind of pelleting coated seed anti-pressure determination method and device, and the lower pressing assembly is installed in the top of vertical seat, the lower pressing assembly is slid with the vertical seat using auxiliary support, the auxiliary support is connected with the rotating assembly on the limit seat using drive assembly, and the rotating assembly is connected with the pelleting coated seed temporary storage cylinder by the reset ejection assembly arranged inside;When the lower pressing assembly moves up and down, it synchronously drives the pelleting coated seed temporary storage cylinder to rotate, the seeds in the pelleting coated seed temporary storage cylinder rotate with the barrel body, the mutual collision between seeds, simulate the friction effect in transportation and seeding;The annular lower pressing seat of lower pressing assembly exerts pressure on seeds, simulates the extrusion scene.The design of "friction and extrusion synchronous occurrence" is closer to the actual transportation and seeding process, and the deviation of test result and real anti-pressure performance is reduced.

Description

Technical Field

[0001] This invention relates to the field of stress resistance testing technology for pelleted coated seeds, specifically to a method and apparatus for determining the stress resistance of pelleted coated seeds. Background Technology

[0002] Compression testing has become a crucial step in the quality control of pelleted coated seeds. High-value seeds, such as vegetables, have stringent requirements for coating quality, and pelleted coated seeds must pass compression tests to ensure they are not damaged during high-speed seeder operation. Traditional compression testing equipment for pelleted coated seeds often uses simple, single-pressure tests, which cannot simulate the real-world scenarios of friction and compression during transportation, resulting in significant discrepancies between test results and actual conditions. Therefore, we have developed a method and apparatus for testing the compression resistance of pelleted coated seeds. Summary of the Invention

[0003] The purpose of this invention is to provide a method and apparatus for testing the stress resistance of pelleted coated seeds, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A device for testing the compressive strength of pelleted coated seeds includes a base, an upright seat and a limiting seat at the upper end of the base, a pressing component mounted on the top of the upright seat using a top seat, the pressing component being slidably connected to the upright seat using an auxiliary support component, the auxiliary support component being connected to a rotating component on the limiting seat using a driving component, and the rotating component being connected to a pelleted coated seed storage cylinder through an internally provided reset ejection component.

[0006] When the pressing component moves up and down, the auxiliary support component drives the rotating component and the pelletized coated seed storage cylinder to rotate through the driving component, so that the pelletized coated seeds simulate the mutual friction during transportation and sowing in the pelletized coated seed storage cylinder.

[0007] After the pressing component moves down, it applies pressure to the pelleted coated seeds in the pelleted coated seed storage cylinder, simulating the mutual compression of the pelleted coated seeds during transportation and sowing. As the pressing component moves up and resets, the reset ejection component ejects the pelleted coated seed storage cylinder from inside the rotating component.

[0008] Preferably, the top seat is horizontally fixed to the top of the upright seat with bolts.

[0009] Preferably, the pressing assembly includes a hydraulic cylinder fixed to the upper end of the top seat and a pressing head connected to the output end of the hydraulic cylinder by a piston rod;

[0010] The pressure head includes a pressure plate connected to the bottom end of the piston rod after passing through the top seat, and an annular pressure seat set at the bottom end of the pressure plate.

[0011] Preferably, the stand has a hollow cavity inside, and the front end of the stand has a groove that communicates with the hollow cavity.

[0012] The auxiliary support includes an H-shaped slide block that slides into the slide groove and an inclined brace fixed between the front end of the H-shaped slide block and the piston rod.

[0013] Preferably, the drive assembly includes a vertical rack fixed to one side of the rear end of the H-shaped slide, an upper pulley movably connected in the hollow cavity, a gear fixed in the center of the front end of the upper pulley, a rotating shaft movably connected in the limit seat, a lower pulley fixed after the rear end of the rotating shaft extends into the hollow cavity, a driving spiral bevel gear fixed to the front end of the rotating shaft, and a driven spiral bevel gear fixed in the center of the bottom of the rotating assembly.

[0014] A belt connects the upper and lower pulleys, the gear meshes with the vertical rack, and the driving spiral bevel gear meshes with the driven spiral bevel gear.

[0015] Preferably, the rear end of the stand is provided with a protruding cylindrical seat, the protruding cylindrical seat has a first bearing inside, the first bearing is sleeved on the outside of the rotating rod, and the front end of the rotating rod extends into the hollow cavity and is fixed to the middle of the rear end of the upper pulley;

[0016] The limiting seat is equipped with a second bearing that is sleeved on the outside of the rotating shaft.

[0017] Preferably, the rotating assembly includes a rotating seat movably connected inside the limiting seat by a third bearing and a connecting cylinder seat disposed at the upper end of the rotating seat;

[0018] The connecting cylinder seat has an upper circular hole in the middle, a lower circular hole at the bottom center of the upper circular hole, and a limiting post fixed in the middle of the lower circular hole;

[0019] The reset ejection assembly includes an upper limit ring seat fixed to the bottom of the upper circular hole with screws, a limiting cylinder provided at the upper end of the upper limit ring seat, several sets of rotating arms movably connected at equal intervals on the limiting cylinder, an I-shaped ring seat and a lower limit ring seat sleeved on the limiting post, and a reset spring provided between the upper limit ring seat and the lower limit ring seat.

[0020] The outer end of the rotating arm is movably connected to the bottom of the pelleting and coating seed storage cylinder, and the inner end of the rotating arm is movably locked in the annular groove on the side of the I-shaped ring seat. A vertical plate is fixedly connected between the I-shaped ring seat and the lower limit ring seat.

[0021] Preferably, the limiting cylinder has a central vertical cavity extending to the bottom of the upper limiting ring seat, and the top of the limiting post extends into the top of the central vertical cavity;

[0022] The rotating arm is movably connected to the through groove on the limiting cylinder by a pin. The inner end of the rotating arm extends into the middle vertical cavity through the through groove and is fixed with a ball head. The ball head is movably stuck in the annular groove on the side of the I-shaped ring seat. The outer end of the rotating arm extends into the upper circular hole through the through groove and is fixed with a pin.

[0023] The bottom of the pelleted coated seed storage cylinder is inserted between the inner wall of the connecting cylinder seat and the outer wall of the limiting cylinder. The bottom of the pelleted coated seed storage cylinder is provided with a connecting ear plate, and the pin is inserted into the horizontal groove on the connecting ear plate.

[0024] The pelleted coated seed storage cylinder is sleeved outside the limiting cylinder. The upper outer side of the pelleted coated seed storage cylinder is provided with a storage groove for placing pelleted coated seeds. The inner wall of the storage groove is provided with friction protrusions.

[0025] Preferably, a support ring seat is provided on the outer side of the connection between the rotating seat and the connecting cylinder seat, and support wheels are movably connected at equal intervals on the support ring seat, with the support wheels sitting on the upper surface of the limiting seat.

[0026] This invention also provides a method for testing the stress resistance of pelleted coated seeds using a testing device, specifically including the following steps:

[0027] S1. The pressing component moves up and down, causing the auxiliary support component to drive the rotating component and the pelletized coated seed storage cylinder to rotate through the driving component. The pelletized coated seeds simulate mutual friction during transportation and sowing in the pelletized coated seed storage cylinder.

[0028] S2. After the pressing component moves down, it applies pressure to the pelletized coated seeds in the pelletized coated seed storage cylinder to simulate the mutual compression of pelletized coated seeds during transportation and sowing.

[0029] S3. The downward pressing component moves upward and resets, and the reset ejection component ejects the pelletized coated seed storage cylinder from inside the rotating component.

[0030] Compared with existing technologies, the beneficial effects of this invention are: This invention can simultaneously simulate the friction and compression of seeds, closely resembling real-world working conditions; through the linkage structure of the "pressing component - auxiliary support component - driving component," the pressing component moves up and down, simultaneously driving the granulated coated seed storage cylinder to rotate. The seeds inside the granulated coated seed storage cylinder rotate with the cylinder body, and the collisions between the seeds simulate the friction during transportation and sowing; simultaneously, the annular pressing seat of the pressing component applies pressure to the seeds, simulating a compression scenario. This design of "simultaneous friction and compression" is closer to the actual transportation and sowing process than the traditional "single compression" test, reducing the deviation between the test results and the actual pressure resistance performance.

[0031] The downward pressing component moves upward and resets, and the reset ejection component pushes the pelleted coated seed storage cylinder out from inside the rotating component. Through the linkage of the reset spring, rotating arm, and I-shaped ring seat, the pelleted coated seed storage cylinder is automatically ejected, eliminating the need for manual removal of seeds. This facilitates the removal of seeds, inspection of seed damage, and improves operational efficiency. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0033] Figure 2 For the present invention Figure 1 A schematic diagram of the three-dimensional structure from another perspective;

[0034] Figure 3 This is a three-dimensional structural diagram showing the connection between the pressing component, auxiliary support component, driving component, and rotating component in the initial state of the present invention.

[0035] Figure 4 For the present invention Figure 3 A schematic diagram of the three-dimensional structure from another perspective;

[0036] Figure 5 For the present invention Figure 1 A schematic diagram of the cross-sectional structure;

[0037] Figure 6 For the present invention Figure 5 A schematic diagram showing the connection between the rotating assembly, the reset ejection assembly, and the pelletized coated seed storage cylinder;

[0038] Figure 7 This is an exploded structural diagram of the assembly of the rotating component, the reset ejection component, and the pelletized coated seed storage cylinder of the present invention.

[0039] Figure 8 This is a schematic diagram of the structure of the pelleted coated seed storage cylinder of the present invention;

[0040] Figure 9 This is a schematic diagram of the rotating arm of the present invention;

[0041] Figure 10 This is a schematic diagram of the structure of the limiting cylinder of the present invention;

[0042] Figure 11 This is a schematic diagram of the connection between the lower limiting ring seat and the I-shaped ring seat of the present invention;

[0043] Figure 12 This is a schematic diagram of the connecting sleeve of the present invention;

[0044] Figure 13 For the present invention Figure 7 A schematic diagram of the three-dimensional structure from another perspective;

[0045] Figure 14 This is a three-dimensional structural diagram of the connection between the pelleted coated seed storage cylinder and the reset ejection component when the pelleted seed storage cylinder of the present invention is lifted.

[0046] Figure 15 For the present invention Figure 14 A schematic diagram of the cross-sectional structure;

[0047] Figure 16 This is a three-dimensional structural diagram of the entire pressing component after it has been moved down according to the present invention;

[0048] Figure 17 For the present invention Figure 16 A schematic diagram of the cross-sectional structure;

[0049] Figure 18 For the present invention Figure 17 A schematic diagram showing the connection between the rotating assembly, the reset ejection assembly, and the pelletized seed storage cylinder.

[0050] In the diagram: 1. Hydraulic cylinder; 2. Top seat; 3. Vertical rack; 4. H-shaped slide; 5. Slide groove; 7. Stand; 8. Diagonal brace; 9. Piston rod; 10. Annular lower pressure seat; 11. Lower pressure plate; 12. Granulation coating seed storage cylinder; 13. Connecting cylinder seat; 14. Limiting seat; 15. Base; 16. Bolt; 17. Rotating rod; 18. Upper pulley; 19. Gear; 20. Belt; 21. Lower pulley; 22. Rotating shaft; 23. Driving spiral bevel gear; 24. Rotating seat; 25. Support ring seat; 26. Support wheel; 27. Driven spiral bevel gear; 28. 29. First bearing; 30. Raised cylinder seat; 31. Vertical limiting hole; 32. Horizontal hole; 33. Second bearing; 34. Third bearing; 35. Limiting post; 36. Limiting cylinder; 37. Lower limiting ring seat; 38. Return spring; 39. Lower circular hole; 40. Upper circular hole; 41. Upper limiting ring seat; 42. Vertical plate; 43. Rotating arm; 44. I-shaped ring seat; 45. Connecting ear plate; 46. Friction protrusion; 47. Temporary storage groove; 48. Pin; 49. Ball head; 50. Pin rod; 51. Screw; 52. Through groove; 53. Horizontal groove; 54. Intermediate vertical cavity. Detailed Implementation

[0051] 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 only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] Example:

[0053] Please see Figure 1-18 The present invention provides a technical solution:

[0054] A pelleted coated seed pressure resistance testing device includes a base 15, an upright 7 and a limiting seat 14 at the upper end of the base 15, a pressing component is installed on the top of the upright 7 by a top seat 2, and the top seat 2 is horizontally fixed to the top of the upright 7 by bolts 16.

[0055] The pressing component is slidably connected to the support 7 using an auxiliary support component, and the auxiliary support component is connected to the rotating component on the limit seat 14 using a drive component;

[0056] The pressing assembly includes a hydraulic cylinder 1 fixed to the upper end of the top seat 2 and a pressing head connected to the output end of the hydraulic cylinder 1 by a piston rod 9;

[0057] The lower pressure head includes a lower pressure plate 11 connected to the lower end of the piston rod 9 after passing through the top seat 2, and an annular lower pressure seat 10 set at the lower end of the lower pressure plate 11.

[0058] The base 7 has a hollow cavity inside, and the front end of the base 7 has a groove 5 that communicates with the hollow cavity.

[0059] The auxiliary support includes an H-shaped slide block 4 that slides into the slide groove 5 and an inclined brace 8 fixed between the front end of the H-shaped slide block 4 and the piston rod 9.

[0060] The downward pressure component is rigidly connected to the H-shaped slide block 4 via the diagonal brace 8. The H-shaped slide block 4 of the auxiliary support component slides with the slide groove 5 (gap ≤ 0.1mm) to ensure that there is no offset during the up and down movement.

[0061] The drive assembly includes a vertical rack 3 fixed to one side of the rear end of the H-shaped slide 4, an upper pulley 18 movably connected inside the hollow cavity, a gear 19 fixed in the center at the front end of the upper pulley 18, a rotating shaft 22 movably connected inside the limiting seat 14, a lower pulley 21 fixed after the rear end of the rotating shaft 22 extends into the hollow cavity, a driving spiral bevel gear 23 fixed at the front end of the rotating shaft 22, and a driven spiral bevel gear 27 fixed in the center at the bottom of the rotating assembly.

[0062] A belt 20 is connected between the upper pulley 18 and the lower pulley 21. Gear 19 meshes with the vertical rack 3, and the driving spiral bevel gear 23 meshes with the driven spiral bevel gear 27.

[0063] The rear end of the stand 7 is provided with a protruding cylindrical seat 29, and the protruding cylindrical seat 29 has a first bearing 28 inside. The first bearing 28 is sleeved on the outside of the rotating rod 17, and the front end of the rotating rod 17 extends into the hollow cavity and is fixed to the middle of the rear end of the upper pulley 18.

[0064] The limiting seat 14 has a second bearing 32 that is sleeved on the outside of the rotating shaft 22.

[0065] The third bearing 33 is fixed in the vertical limiting hole 30 inside the limiting seat 14. The side of the vertical limiting hole 30 is provided with a horizontal hole 31 that communicates with the hollow cavity. The second bearing 32 is fixed in the horizontal hole 31, and the active spiral bevel gear 23 is located in the vertical limiting hole 30.

[0066] The drive assembly adopts a multi-stage transmission of "rack-gear-belt-spiral bevel gear" to achieve synchronous linkage between downward and rotational motions.

[0067] Benefits of driving:

[0068] The up-and-down movement of the pressing component is synchronized with the rotation of the temporary storage cylinder 12, simulating the scenario of "squeezing and friction occurring simultaneously" in actual transportation (such as seeds being squeezed and rubbed against each other on the conveyor belt). This is closer to the real working condition than the traditional step-by-step simulation of "friction first and then squeezing", and the measurement results are more reliable.

[0069] The rotating seat 24 of the rotating assembly is connected to the limiting seat 14 through the third bearing 33, the rotating shaft 22 is supported by the second bearing 32, and the rotating rod 17 is supported by the first bearing 28, thereby reducing rotational friction.

[0070] The meshing transmission of the spiral bevel gears (driving spiral bevel gear 23 and driven spiral bevel gear 27) changes the direction of force (converting the rotation of the shaft 22 into vertical rotation), making the layout of the rotating components more compact and adapting to the overall space of the device (vertical layout of the stand 7 and the limit seat 14).

[0071] The rotating component is connected to the pelletized coated seed storage cylinder 12 via an internally configured reset ejection component.

[0072] The rotating assembly includes a rotating seat 24 movably connected inside the limiting seat 14 by a third bearing 33 and a connecting sleeve seat 13 provided at the upper end of the rotating seat 24; the driven spiral bevel gear 27 is centrally fixed at the bottom of the rotating seat 24;

[0073] The connecting cylinder seat 13 has an upper circular hole 39 in the middle, a lower circular hole 38 at the bottom center of the upper circular hole 39, and a limiting post 34 fixed in the middle of the lower circular hole 38.

[0074] The reset ejection assembly includes an upper limit ring seat 40 fixed to the bottom of the upper circular hole 39 by screws 50, a limiting cylinder 35 provided at the upper end of the upper limit ring seat 40, several sets of rotating arms 42 movably connected at equal intervals on the limiting cylinder 35, an I-shaped ring seat 43 and a lower limiting ring seat 36 sleeved on the limiting post 34, and a reset spring 37 provided between the upper limit ring seat 40 and the lower limiting ring seat 36;

[0075] The outer end of the rotating arm 42 is movably connected to the bottom of the pelleting and coating seed storage cylinder 12, and the inner end of the rotating arm 42 is movably locked in the annular groove on the side of the I-shaped ring seat 43. A vertical plate 41 is fixedly connected between the I-shaped ring seat 43 and the lower limit ring seat 36.

[0076] The middle of the limiting cylinder 35 is provided with a central vertical cavity 53 that extends to the bottom of the upper limit ring seat 40, and the top of the limiting post 34 extends into the top of the central vertical cavity 53;

[0077] The rotating arm 42 is movably connected to the through groove 51 on the limiting cylinder 35 by a pin 47. The inner end of the rotating arm 42 extends into the middle vertical cavity 53 through the through groove 51 and is fixed with a ball head 48. The ball head 48 is movably stuck in the annular groove on the side of the I-shaped ring seat 43. The outer end of the rotating arm 42 extends into the upper circular hole 39 through the through groove 51 and is fixed with a pin 49.

[0078] The bottom of the pelleted and coated seed storage cylinder 12 is inserted between the inner wall of the connecting cylinder seat 13 and the outer wall of the limiting cylinder 35. The bottom of the pelleted and coated seed storage cylinder 12 is provided with a connecting ear plate 44, and the pin 49 is inserted into the horizontal groove 52 on the connecting ear plate 44.

[0079] The pelleted seed storage cylinder 12 is fitted outside the limiting cylinder 35. The upper outer side of the pelleted seed storage cylinder 12 is provided with a storage groove 46 for placing pelleted seeds. The inner wall of the storage groove 46 is provided with friction protrusions 45.

[0080] Friction bump 45 simulates the rough surface of the inner wall of transport equipment or soil particles, making the friction intensity between seeds closer to reality.

[0081] A support ring seat 25 is provided on the outer side of the connection between the rotating seat 24 and the connecting cylinder seat 13. Support wheels 26 are movably connected at equal intervals on the support ring seat 25. The support wheels 26 sit on the upper surface of the limiting seat 14.

[0082] The support wheel 26 of the support ring seat 25 contacts the surface of the limiting seat 14, bearing the radial force of the rotating component and preventing eccentricity caused by gravity shift during rotation, thus further improving motion stability. This ensures smooth rotation of the pelleted coated seed storage cylinder 12, avoiding uneven friction or compression caused by vibration, and guaranteeing consistent testing conditions for the same batch of seeds.

[0083] When the pressing component moves up and down, the auxiliary support component drives the rotating component and the pelletized coated seed storage cylinder 12 to rotate through the driving component, so that the pelletized coated seeds simulate mutual friction during transportation and sowing within the pelletized coated seed storage cylinder 12.

[0084] After the pressing component moves down, it applies pressure to the pelleted coated seeds in the pelleted coated seed storage cylinder 12 to simulate the mutual compression of the pelleted coated seeds during transportation and sowing. As the pressing component moves up and resets, the reset ejection component ejects the pelleted coated seed storage cylinder 12 from inside the rotating component.

[0085] Through the linkage of the reset spring 37, the rotating arm 42, and the I-shaped ring seat 43, the pelletized coated seed storage cylinder 12 is automatically ejected, eliminating the need for manual seed removal and improving operational efficiency.

[0086] This invention also provides a method for testing the stress resistance of pelleted coated seeds using a testing device, specifically including the following steps:

[0087] S1. The pressing component moves up and down, causing the auxiliary support component to drive the rotating component and the pelletized coated seed storage cylinder 12 to rotate through the driving component. The pelletized coated seeds simulate mutual friction during transportation and sowing within the pelletized coated seed storage cylinder 12.

[0088] S2. After the pressing component moves down, it applies pressure to the pelletized coated seeds in the pelletized coated seed storage cylinder 12 to simulate the mutual compression of pelletized coated seeds during transportation and sowing.

[0089] S3. The downward pressing component moves upward and resets, and the reset ejection component ejects the pelletized coated seed storage cylinder 12 from inside the rotating component.

[0090] Specifically, when using it:

[0091] 1. Simulate friction during transportation and sowing:

[0092] The hydraulic cylinder 1 is started by the PLC controller, and the piston rod 9 at its output end drives the lower pressure head (lower pressure plate 11, annular lower pressure seat 10) to move up and down. When the piston rod 9 moves down, it pushes the H-shaped slide 4 to slide down along the slide groove 5 of the upright seat 7 through the diagonal brace 8; the vertical rack 3 at the rear end of the H-shaped slide 4 meshes with the gear 19, driving the upper pulley 18 to rotate, and transmitting the rotation to the lower pulley 21 through the belt 20, so that the rotating shaft 22 rotates synchronously.

[0093] The active spiral bevel gear 23 at the front end of the rotating shaft 22 meshes with the driven spiral bevel gear 27 at the bottom of the rotating assembly, driving the rotating seat 24 and the connecting cylinder seat 13 to rotate, thereby driving the pelletized coated seed storage cylinder 12, which is sleeved on the outside of the limiting cylinder 35, to rotate.

[0094] Friction simulation implementation:

[0095] The pelleted coated seeds in the pelleted seed storage cylinder 12 rotate with the cylinder body. Due to the contact between the friction protrusions 45 on the inner wall of the storage tank 46 and the seeds, as well as the collision between the seeds, the friction during transportation and sowing is simulated (the friction intensity can be adjusted by the downward speed of the piston rod 9; the faster the speed, the more rapid the rotation, and the more intense the friction).

[0096] The diameter of gear 19 is smaller than the diameter of upper pulley 18, the diameter of lower pulley 21 is smaller than the diameter of upper pulley 18, the diameter of driving spiral bevel gear 23 is larger than the diameter of lower pulley 21, and the diameter of driven spiral bevel gear 27 is smaller than the diameter of driving spiral bevel gear 23. In this way, within the limited stroke of the pressing assembly moving up and down, the rotation speed of the pelleting coated seed storage cylinder 12 can be increased, thereby increasing the degree of contact friction between the pelleting coated seeds.

[0097] 2. Simulated extrusion and compressive strength testing:

[0098] As the pressing component continues to move downward, the annular pressing seat 10 gradually approaches the temporary storage groove 46 of the pelleted coated seed storage cylinder 12, ultimately applying pressure to the pelleted coated seeds in the temporary storage groove 46 (the pressure can be controlled by the output force of the hydraulic cylinder 1, ranging from 0-500N), simulating the stress state of seeds during transportation, stacking, or sowing compression (e.g., Figure 16 , Figure 17 and Figure 18 (As shown).

[0099] At this time, the annular pressing seat 10 pushes the pelleted seed storage cylinder 12 down until the connecting ear plate 44 at the bottom of the pelleted seed storage cylinder 12 abuts against the upper surface of the upper limit ring seat 40. The inner end of the rotating arm 42 is lifted up around the pin 47. The I-shaped ring seat 43 drives the lower limit ring seat 36 to move up through the vertical plate 41, and the reset spring 37 is in a compressed state.

[0100] Compression resistance test:

[0101] By monitoring the output pressure of hydraulic cylinder 1 (with a matching pressure sensor, not detailed in the structure), the critical pressure value when the seed is damaged (coating cracks or kernel is damaged) is recorded, which is the pressure resistance parameter of this batch of seeds.

[0102] 3. Reset and seed removal:

[0103] After the measurement is completed, the hydraulic cylinder 1 drives the piston rod 9 to move upward and reset, the H-shaped slide 4 moves upward along the slide groove 5, and the vertical rack 3 drives the gear 19 to rotate in the opposite direction until the rotating component and the pelletized coated seed storage cylinder 12 stop rotating.

[0104] At this time, the reset spring 37 of the reset ejection assembly (previously in a compressed state) releases its elastic potential energy, pushing the lower limit ring seat 36 downward, which in turn drives the I-shaped ring seat 43 downward through the vertical plate 41; the annular groove of the I-shaped ring seat 43 pushes the inner end of the rotating arm 42 downward, causing the outer end of the rotating arm 42 to lift upward around the pin 47, and through the pin 49 and the connecting ear plate 44, pushes the top of the pelleted coated seed storage cylinder 12 out of the connecting cylinder seat 13 (e.g. Figure 5 and Figure 6 As shown in the image, this makes it easy to remove the seeds and check for any damage.

[0105] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the stress resistance of pelleted coated seeds, comprising a base, characterized in that: The upper end of the base is provided with a stand and a limiting seat. The top of the stand is equipped with a pressing component. The pressing component is slidably connected to the stand by an auxiliary support. The auxiliary support is connected to the rotating component on the limiting seat by a driving component. The rotating component is connected to a pelletized coated seed storage cylinder through an internally set reset ejection component. When the pressing component moves up and down, the auxiliary support component drives the rotating component and the pelletized coated seed storage cylinder to rotate through the driving component, so that the pelletized coated seeds simulate the mutual friction during transportation and sowing in the pelletized coated seed storage cylinder. After the pressing component moves down, it applies pressure to the pelletized coated seeds in the pelletized coated seed storage cylinder to simulate the mutual compression of the pelletized coated seeds during transportation and sowing. As the pressing component moves up and resets, the reset ejection component ejects the pelletized coated seed storage cylinder from inside the rotating component. The pressing assembly includes a hydraulic cylinder fixed to the upper end of the top seat and a pressing head connected to the output end of the hydraulic cylinder by a piston rod; The pressure head includes a pressure plate connected to the lower end of the piston rod after it passes through the top seat, and an annular pressure seat provided at the lower end of the pressure plate; The rotating assembly includes a rotating seat movably connected inside the limiting seat by a third bearing and a connecting cylinder seat disposed at the upper end of the rotating seat. The connecting cylinder seat has an upper circular hole in the middle, a lower circular hole at the bottom center of the upper circular hole, and a limiting post fixed in the middle of the lower circular hole; The reset ejection assembly includes an upper limit ring seat fixed to the bottom of the upper circular hole with screws, a limiting cylinder provided at the upper end of the upper limit ring seat, several sets of rotating arms movably connected at equal intervals on the limiting cylinder, an I-shaped ring seat and a lower limit ring seat sleeved on the limiting post, and a reset spring provided between the upper limit ring seat and the lower limit ring seat. The outer end of the rotating arm is movably connected to the bottom of the pelleting and coating seed storage cylinder, and the inner end of the rotating arm is movably locked in the annular groove on the side of the I-shaped ring seat. A vertical plate is fixedly connected between the I-shaped ring seat and the lower limit ring seat. The limiting cylinder has a central vertical cavity extending to the bottom of the upper limiting ring seat, and the top of the limiting post extends into the top of the central vertical cavity; The rotating arm is movably connected to the through groove on the limiting cylinder by a pin. The inner end of the rotating arm extends into the middle vertical cavity through the through groove and is fixed with a ball head. The ball head is movably stuck in the annular groove on the side of the I-shaped ring seat. The outer end of the rotating arm extends into the upper circular hole through the through groove and is fixed with a pin. The bottom of the pelleted coated seed storage cylinder is inserted between the inner wall of the connecting cylinder seat and the outer wall of the limiting cylinder. The bottom of the pelleted coated seed storage cylinder is provided with a connecting ear plate, and the pin is inserted into the horizontal groove on the connecting ear plate. The pelleted coated seed storage cylinder is sleeved outside the limiting cylinder. The upper outer side of the pelleted coated seed storage cylinder is provided with a storage groove for placing pelleted coated seeds. The inner wall of the storage groove is provided with friction protrusions.

2. The apparatus for testing the stress resistance of pelleted coated seeds according to claim 1, characterized in that: The top seat is horizontally fixed to the top of the upright seat with bolts.

3. The apparatus for testing the stress resistance of pelleted coated seeds according to claim 1, characterized in that: The stand has a hollow cavity inside, and a sliding groove communicating with the hollow cavity is located at the center of the front end of the stand. The auxiliary support includes an H-shaped slide block that slides into the slide groove and an inclined brace fixed between the front end of the H-shaped slide block and the piston rod.

4. The apparatus for testing the stress resistance of pelleted coated seeds according to claim 3, characterized in that: The drive assembly includes a vertical rack fixed to one side of the rear end of the H-shaped slide, an upper pulley movably connected inside the hollow cavity, a gear fixed in the center at the front end of the upper pulley, a rotating shaft movably connected inside the limit seat, a lower pulley fixed after the rear end of the rotating shaft extends into the hollow cavity, a driving spiral bevel gear fixed at the front end of the rotating shaft, and a driven spiral bevel gear fixed in the center at the bottom of the rotating assembly. A belt connects the upper and lower pulleys, the gear meshes with the vertical rack, and the driving spiral bevel gear meshes with the driven spiral bevel gear.

5. The apparatus for testing the stress resistance of pelleted coated seeds according to claim 4, characterized in that: The rear end of the stand is provided with a protruding cylindrical seat, and the protruding cylindrical seat has a first bearing inside. The first bearing is sleeved on the outside of the rotating rod, and the front end of the rotating rod extends into the hollow cavity and is fixed to the middle of the rear end of the upper pulley. The limiting seat is equipped with a second bearing that is sleeved on the outside of the rotating shaft.

6. The apparatus for testing the stress resistance of pelleted coated seeds according to claim 1, characterized in that: A support ring seat is provided on the outer side of the connection between the rotating seat and the connecting cylinder seat. Support wheels are movably connected at equal intervals on the support ring seat, and the support wheels sit on the upper surface of the limiting seat.

7. A method for determining the stress resistance of pelleted coated seeds according to any one of claims 1-6, characterized in that: Specifically, the following steps are included: S1. The pressing component moves up and down, causing the auxiliary support component to drive the rotating component and the pelletized coated seed storage cylinder to rotate through the driving component. The pelletized coated seeds simulate mutual friction during transportation and sowing in the pelletized coated seed storage cylinder. S2. After the pressing component moves down, it applies pressure to the pelletized coated seeds in the pelletized coated seed storage cylinder to simulate the mutual compression of pelletized coated seeds during transportation and sowing. S3. The downward pressing component moves upward and resets, and the reset ejection component ejects the pelletized coated seed storage cylinder from inside the rotating component.

Images