Online multifunctional grain quality analyzer

Abstract

The utility model relates to an on-line multifunctional grain quality analyzer which comprises a case, and a grain conveying line, a grain taking and placing mechanism, a stored material weighing and discharging assembly, a first translation mechanism, a grain carrying plate, a camera, a variable pitch screen mesh assembly, a third translation mechanism and a material box which are respectively arranged in the case, the grain conveying line penetrates through the inlets and outlets in the two sides, the material box is arranged above the left side of the grain conveying line, the variable-pitch screen assembly is arranged above the material box, the third translation mechanism is connected with the variable-pitch screen assembly, the grain carrying plate is arranged above the variable-pitch screen assembly, and the stored material weighing and discharging assembly is arranged above the grain carrying plate. The first translation mechanism is connected with the stored material weighing and discharging assembly, the grain taking and placing mechanism is used for obtaining and putting grains, and the camera is arranged above the grain carrying plate and connected with the machine vision system. The device has the advantages that the processes of feeding, weighing, discharging, screening, photographing detection and collecting of grain samples can be completed continuously and orderly.

Description

Technical Field

[0001] This utility model relates to the field of grain testing equipment, and in particular to an online multifunctional grain quality analyzer. Background Technology

[0002] Grain is a daily necessity. Both the south and the north cultivate vast quantities of grain each year. However, grain varies in quality; especially in grain storage facilities, which contain numerous impurities. Analysis of grain size and impurities is necessary. Traditional grain screening and impurity removal primarily rely on manual sorting, where smaller samples are selected from larger ones, and the good samples are then manually sieved, leaving only the impurity grains.

[0003] However, manual screening requires a lot of manpower, material resources and space, and over time it can also cause eye strain, which can lead to high error rates and low efficiency. Therefore, there has been a strong public demand for this testing method to be developed into production line equipment.

[0004] Therefore, it is necessary to develop a grain quality analyzer that can meet the above requirements. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an online multifunctional grain quality analyzer, which effectively overcomes the defects of the prior art.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] An online multifunctional grain quality analyzer includes a chassis and a grain conveyor line, a grain loading and unloading mechanism, a material storage, weighing and discharging assembly, a first translation mechanism, a grain carrier plate, a camera, a variable-pitch screen assembly, a third translation mechanism, and a material box, all disposed within the chassis. The chassis has inlets and outlets on its left and right sides. The grain conveyor line passes through these inlets and outlets in a left-right direction. The material box is mounted above the left side of the grain conveyor line via a bracket. The variable-pitch screen assembly is positioned above the material box and has a vertically continuous screen with adjustable mesh size. The third translation mechanism is connected to the variable-pitch screen assembly and is used to drive the variable-pitch screen assembly. The screen assembly is moved horizontally to the top or right side of the material box. The grain carrier plate is horizontally positioned above the variable-pitch screen assembly and on the right side of the material box. The material weighing and unloading assembly is positioned above the grain carrier plate. The first translation mechanism is connected to the material weighing and unloading assembly and is used to drive the material weighing and unloading assembly to move horizontally. The grain picking and placing mechanism is used to pick up grain from the grain conveyor line and put it into the material weighing and unloading assembly. The lower end of the material weighing and unloading assembly is provided with a scraper. The camera is positioned above the grain carrier plate and connected to a machine vision system.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the aforementioned chassis includes a platform, a cover, and a frame. The platform is horizontally mounted on the upper end of the frame, the cover is mounted on the upper end of the platform, and the lower left and right sides of the cover are respectively provided with the aforementioned entrances and exits. The cover is provided with doors that can be opened or closed.

[0010] Furthermore, the aforementioned door is a transparent door.

[0011] Furthermore, the aforementioned grain conveyor line is a belt conveyor.

[0012] Furthermore, the aforementioned grain picking and placing mechanism includes a picking and placing bracket, a suction cup assembly, two first synchronous pulleys, a first synchronous belt, a first motor, and a first clamping block. The picking and placing bracket is disposed on one side of the aforementioned grain conveying line. The two aforementioned first synchronous pulleys are respectively arranged vertically and spaced apart, and are rotatably mounted on the picking and placing bracket. The aforementioned first synchronous belt surrounds the two aforementioned first synchronous pulleys. The aforementioned first motor is mounted on the picking and placing bracket and is connected to the aforementioned first synchronous pulley above it. The aforementioned first clamping block is mounted on the aforementioned first synchronous belt and is connected and fixed to the aforementioned suction cup assembly. The aforementioned suction cup assembly is located on the upper right side of the aforementioned grain conveying line.

[0013] Furthermore, the aforementioned material weighing and unloading assembly includes a storage bin, a mounting plate, a gate assembly, a weighing device, a unloading channel, and a positioning plate. The mounting plate is horizontally arranged and connected to the aforementioned first translation mechanism. The unloading channel vertically penetrates the mounting plate. The positioning plate is horizontally arranged above the unloading channel, with a discharge port at one end communicating with the unloading channel. The weighing device is mounted on the lower end of the mounting plate and assembled on the upper end of the mounting plate. The storage bin is open at both the upper and lower ends, with its lower opening connected and communicating with the discharge port. The gate assembly is mounted on the lower end of the storage bin and is used to open or close the lower opening of the storage bin. The grain loading and unloading mechanism is used to feed grain into the storage bin through the upper opening. The lower right side of the mounting plate is provided with the aforementioned scraper extending in the front-rear direction.

[0014] Furthermore, the aforementioned first translation mechanism includes two first guide rails, a first rack, a second motor, and a first gear. The two first guide rails extend in the left-right direction and are mounted at intervals on the upper front and rear ends of the aforementioned grain carrier plate. The front and rear ends of the lower end of the aforementioned mounting plate are slidably mounted on the aforementioned first guide rails via first sliders. The aforementioned first rack is horizontally mounted in the left-right direction on the upper front or rear end of the aforementioned grain carrier plate. The aforementioned second motor is mounted on the upper end of the aforementioned mounting plate. The aforementioned first gear is connected to the motor shaft of the aforementioned second motor and meshes with the aforementioned first rack. A detection area is provided in the middle region of the aforementioned grain carrier plate.

[0015] Furthermore, the aforementioned variable-pitch screen assembly includes a fixed plate, two connecting plates, multiple straight first mesh wires, multiple straight second mesh wires, two screws, two second synchronous pulleys, a second synchronous belt, and a third motor. The fixed plate is horizontally arranged, with a square material drop hole in its central area. The two connecting plates extend in the front-to-back direction and are respectively mounted on the upper part of the fixed plate at the left and right sides of the material drop hole. The multiple first mesh wires extend in the left-to-right direction and are evenly spaced in the front-to-back direction. The two ends of the first mesh wires are respectively connected and fixed to the two connecting plates. The two screws extend in the left-to-right direction and are distributed on the upper part of the fixed plate at the front and back sides of the material drop hole. Both ends of the rod are mounted on the upper end of the fixed plate via bearings rotatably connected to them. The threads of the two screws are in opposite directions, and their pitch gradually increases or decreases from one end to the other. Multiple second mesh wires extend in the front-to-back direction and are distributed at intervals to the left and right. Each of the second mesh wires has balls at both ends, and the balls at both ends are respectively fitted into the thread grooves of the two screws. Two second synchronous pulleys are respectively mounted on the left end of the two screws. The second synchronous belt is wrapped around the two second synchronous pulleys. The third motor is mounted on the upper left end of the fixed plate and is connected to one of the second synchronous pulleys for transmission. The third translation mechanism is connected to the fixed plate.

[0016] Furthermore, the aforementioned third translation mechanism includes two third guide rails, two support plates, two third synchronous pulleys, a third synchronous belt, a fourth motor, and a third clamping block. Both support plates extend in the left-right direction and are spaced apart front-back. The two third guide rails extend in the left-right direction and are respectively mounted on the two support plates. The lower ends of the fixed plates are slidably connected to the two third guide rails via second sliders. The two third synchronous pulleys are spaced apart in the left-right direction and rotatably mounted on the upper part of one of the support plates. The third synchronous belt wraps around the two third synchronous pulleys. The third clamping block is mounted on the third synchronous belt and connected and fixed to the fixed plate. The fourth motor is mounted on one of the support plates and is drively connected to one of the third synchronous pulleys.

[0017] The beneficial effects of this utility model are: it can complete the feeding, weighing, unloading, screening, photographing and testing and collection of grain samples in a smooth and orderly manner, with high testing efficiency and accurate results. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the online multifunctional grain quality analyzer of this utility model;

[0019] Figure 2This is a schematic diagram of the internal structure of the online multifunctional grain quality analyzer of this utility model;

[0020] Figure 3 This is a schematic diagram of the grain loading and unloading mechanism in the online multifunctional grain quality analyzer of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the material weighing and feeding component and the first translation mechanism in the online multifunctional grain quality analyzer of this utility model. Figure 1 ;

[0022] Figure 5 This is a schematic diagram of the structure of the material weighing and feeding component and the first translation mechanism in the online multifunctional grain quality analyzer of this utility model. Figure 2 ;

[0023] Figure 6 This is a schematic diagram of the structure of the variable-pitch screen assembly and the third translation mechanism in the online multifunctional grain quality analyzer of this utility model. Figure 1 ;

[0024] Figure 7 This is a schematic diagram of the structure of the variable-pitch screen assembly and the third translation mechanism in the online multifunctional grain quality analyzer of this utility model. Figure 2 ;

[0025] Figure 8 This is a schematic diagram of the variable-pitch screen assembly in the online multifunctional grain quality analyzer of this utility model.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Chassis; 2. Grain conveyor line; 3. Grain loading and unloading mechanism; 4. Material weighing and unloading assembly; 5. First translation mechanism; 6. Grain carrier plate; 7. Camera; 8. Variable pitch screen assembly; 9. Third translation mechanism; 10. Material box; 11. Platform; 12. Machine cover; 13. Frame; 20. Scraper; 31. Loading and unloading bracket; 32. Suction cup assembly; 33. First synchronous pulley; 35. First synchronous belt; 36. First motor; 37. First clamping block; 41. Storage bin; 42. Mounting plate; 43. Gate assembly ; 44. Weighing device; 45. Feeding channel; 46. Positioning plate; 51. First guide rail; 52. First rack; 53. Second motor; 54. First gear; 81. Fixing plate; 82. Connecting plate; 83. First mesh wire; 84. Second mesh wire; 85. Screw; 86. Second synchronous pulley; 88. Second synchronous belt; 89. Third motor; 91. Third guide rail; 92. Support plate; 93. Third synchronous pulley; 94. Third synchronous belt; 95. Fourth motor; 96. Third clamping block; 841. Ball bearing. Detailed Implementation

[0028] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0029] Example: Figure 1 and 2 As shown, the online multifunctional grain quality analyzer of this embodiment includes a chassis 1 and a grain conveyor line 2, a grain loading and unloading mechanism 3, a material storage, weighing and unloading assembly 4, a first translation mechanism 5, a grain carrier plate 6, a camera 7, a variable-pitch screen assembly 8, a third translation mechanism 9, and a material box 10, all respectively disposed within the chassis 1. The chassis 1 has inlets and outlets on its left and right sides. The grain conveyor line 2 passes through these inlets and outlets on both sides in a left-right direction. The material box 10 is mounted on the upper left side of the grain conveyor line 2 via a bracket. The variable-pitch screen assembly 8 is positioned above the material box 10 and has a vertically continuous screen with adjustable mesh size. The third translation mechanism 9 is connected to the variable-pitch screen assembly 8 and is used to drive... The variable-pitch screen assembly 8 is moved horizontally to the top or right side of the material box 10. The grain carrier plate 6 is horizontally positioned above the variable-pitch screen assembly 8 and to the right side of the material box 10. The material storage weighing and unloading assembly 4 is positioned above the grain carrier plate 6. The first translation mechanism 5 is connected to the material storage weighing and unloading assembly 4 and is used to drive the material storage weighing and unloading assembly 4 to move horizontally. The grain picking and placing mechanism 3 is used to pick up grain from the grain conveyor line 2 and put it into the material storage weighing and unloading assembly 4. The lower end of the material storage weighing and unloading assembly 4 is provided with a scraper 20. The camera 7 is positioned above the grain carrier plate 6 and is connected to a machine vision system.

[0030] In this embodiment, the machine vision system is a conventional technology in the field and will not be described in detail here.

[0031] The usage process is as follows:

[0032] At the right-side inlet / outlet of the chassis 1, the grain sample to be analyzed is placed on the left-side conveyor surface of the grain conveyor line 2 (i.e., the feed end of the grain conveyor line 2). The grain sample is conveyed to the left via the grain conveyor line 2. During the conveying process, the grain pick-up and drop mechanism 3 picks up the grain sample from the grain conveyor line 2 and places it into the storage weighing and unloading assembly 4. After weighing, the first translation mechanism 5 drives the assembly to move it to the grain carrier plate 6 (in this state, the variable-pitch screen assembly 8 is located on the right side of the grain carrier plate 6). Then, the first translation mechanism 5 drives the storage weighing and unloading assembly 4 to move to the right to avoid the camera 7 above. The camera 7 takes a picture of the grain sample on the grain carrier plate 6 and uploads it to the machine vision system for analysis. Afterwards, the third translation mechanism 9 drives the variable-pitch screen assembly 8 to move to the left and expose it on the grain carrier plate 6. On the left side, the first translation mechanism 5 drives the material weighing and unloading assembly 4 to move to the left again. The scraper 20 at its lower end scrapes the grain sample on the grain carrier plate 6 from its left side onto the screening screen of the variable pitch screen assembly 8. Next, the third translation mechanism 9 moves to the left and is slightly adjusted to be above the grain conveying line 2 (to the right of the material box 10). Then, the variable pitch screen assembly 8 adjusts the mesh size (towards larger, smaller than the particle size of the grain sample). The third translation mechanism 9 starts reciprocating translation (equivalent to vibration). Impurities in the grain sample fall through the mesh onto the grain conveying line 2 and are sent out from the inlet and outlet on the left side of the machine box 1. Next, the third translation mechanism 9 drives the variable pitch screen assembly 8 to move to the left and is adjusted to be above the material box 10. The mesh size is further increased, and the grain sample falls through the mesh into the material box 10. Finally, the material box 10 is removed to obtain the grain sample that has been screened and analyzed. The analyzer has a reasonable structural design and can complete the feeding, weighing, unloading, screening, photographing and testing and collection of grain samples in a smooth and orderly manner, with high testing efficiency and accurate results.

[0033] In this embodiment, the aforementioned chassis 1 includes a platform 11, a cover 12, and a frame 13. The platform 11 is horizontally mounted on the upper end of the frame 13, and the cover 12 is mounted on the upper end of the platform 11. The lower left and right sides of the cover 12 are respectively provided with the aforementioned entrances and exits, and the cover 12 is provided with doors that can be opened or closed. The cover 12 is generally designed as a rectangular cover with an open lower end, forming a complete chassis structure together with the platform 11.

[0034] In this embodiment, the lower parts of the front and rear sides of the grain carrier plate 6 are fixed to the upper end of the platform 11 by multiple support columns.

[0035] In this embodiment, the camera 7 is mounted on the upper end of the platform 11 via a portal frame, and the camera 7 is located on the upper horizontal section of the portal frame.

[0036] In this embodiment, the door is transparent and can be made of glass or acrylic material. The internal operation of the instrument can be observed through this door.

[0037] In this embodiment, the grain conveying line 2 adopts a conventional belt conveyor, and its conveying direction is from left to right.

[0038] As a preferred implementation method, such as Figure 3 As shown, the grain picking and placing mechanism 3 includes a picking and placing bracket 31, a suction cup assembly 32, two first synchronous pulleys 33, a first synchronous belt 35, a first motor 36, and a first clamping block 37. The picking and placing bracket 31 is disposed on one side of the grain conveying line 2. The two first synchronous pulleys 33 are respectively arranged vertically and spaced apart, and are rotatably mounted on the picking and placing bracket 31. The first synchronous belt 35 surrounds the two first synchronous pulleys 33. The first motor 36 is mounted on the picking and placing bracket 31 and is connected to the first synchronous pulley 33 above it. The first clamping block 37 is mounted on the first synchronous belt 35 and is connected and fixed to the suction cup assembly 32. The suction cup assembly 32 is located on the upper right side of the grain conveying line 2.

[0039] In the above implementation scheme, the first motor 36 drives the first synchronous pulley 33, the first synchronous belt 35, and the first synchronous belt 35 to operate. The first synchronous belt 35 drives the first clamping block 37 connected to it to move up and down, thereby causing the suction cup assembly 32 to move up and down closer to or away from the conveying surface of the grain conveying line 2. Specifically, when the grain is fed from the left side of the machine box 1 and conveyed to the right, it stops below the suction cup assembly 32. The suction cup assembly 32 moves downward with the first clamping block 37, approaches the grain sample, and picks up the grain sample. Then, with the reverse rotation of the first motor 36, the first clamping block 37 and the suction cup assembly 32 move upward to above the storage weighing and unloading assembly 4. Then, the first translation mechanism 5 drives the storage weighing and unloading assembly 4 to translate to below the suction cup assembly 32. The suction cup assembly 32 releases the grain sample, which then falls into the storage weighing and unloading assembly 4 for subsequent weighing and other processes. This grain picking and placing mechanism 3 has a reasonable structural design and operates smoothly.

[0040] In this embodiment, the suction cup assembly 32 is a conventional flat negative pressure suction cup, which can be connected to a negative pressure pipeline.

[0041] As a preferred implementation method, such as Figure 4 and 5As shown, the aforementioned material storage, weighing, and unloading assembly 4 includes a storage bin 41, a mounting plate 42, a gate assembly 43, a weighing device 44, a unloading channel 45, and a positioning plate 46. The mounting plate 42 is horizontally arranged and connected to the aforementioned first translation mechanism 5. The unloading channel 45 vertically penetrates the mounting plate 42. The positioning plate 46 is horizontally arranged above the unloading channel 45, and one end of it has a discharge port that communicates with the unloading channel 45. The weighing device 44 is mounted on the aforementioned storage bin 41, a mounting plate 42, a gate assembly 43, a weighing device 44, a unloading hopper 45, and a positioning plate 46. The lower end of the mounting plate 42 is assembled on the upper end of the mounting plate 42. The upper and lower ends of the storage bin 41 are both open, and the lower end of the open end is connected and communicates with the discharge port. The gate assembly 43 is installed at the lower end of the storage bin 41 and is used to open or close the lower end of the storage bin 41. The grain loading and unloading mechanism 3 is used to feed grain into the storage bin 41 through the upper end of the storage bin 41. The lower right side of the mounting plate 42 is provided with the scraper 20 extending in the front-back direction.

[0042] In the above implementation scheme, the gate assembly 43 is closed in advance, the grain sample falls into the storage bin 41, is then weighed by the weighing device 44, and the weight is uploaded to the control host connected to it. After the weighing is completed, the gate assembly 43 is opened, and the grain sample falls onto the grain carrier plate 6 below through the feeding channel 45 (before the weighing, the first translation mechanism 5 has driven the storage, weighing and feeding assembly 4 to move above the grain carrier plate 6). This structure is simple and reasonable in design, and is relatively flexible in use. The gate assembly 43 and the weighing device 44 can achieve flexible storage, weighing and feeding processes.

[0043] In this embodiment, the gate assembly 43 can be a conventional electric gate.

[0044] In a preferred embodiment, the first translation mechanism 5 includes two first guide rails 51, a first rack 52, a second motor 53, and a first gear 54. The two first guide rails 51 extend in the left-right direction and are mounted at intervals on the upper front and rear ends of the grain carrier plate 6. The front and rear ends of the lower end of the mounting plate 42 are slidably mounted on the first guide rails 51 via first sliders. The first rack 52 is horizontally mounted in the left-right direction on the upper front or rear end of the grain carrier plate 6. The second motor 53 is mounted on the upper end of the mounting plate 42. The first gear 54 is connected to the motor shaft of the second motor 53 and meshes with the first rack 52. A detection area is provided in the middle region of the grain carrier plate 6.

[0045] In the above implementation scheme, the second motor 53 drives the first gear 54 to rotate and move left and right along the first rack 52, thereby causing the material storage, weighing and unloading assembly 4 to move left and right and slide left and right with the first guide rail 51. This drive structure is simple, isolated, and runs smoothly.

[0046] In this embodiment, baffles extending in the left and right direction are provided at intervals in the middle area of ​​the grain carrier plate 6, and a detection area is defined between the two baffles. The width of the scraper 20 is slightly smaller than the distance between the two baffles. During the translation of the material storage, weighing and unloading component 4, it can effectively translate left and right along the upper surface of the grain carrier plate 6, thereby scraping the grain sample on the grain carrier plate 6 from the left side into the material box 10.

[0047] As a preferred implementation method, such as Figure 6 , 7 As shown in Figure 8, the variable-pitch screen assembly 8 includes a fixed plate 81, two connecting plates 82, multiple straight first mesh wires 83, multiple straight second mesh wires 84, two screws 85, two second synchronous pulleys 86, a second synchronous belt 88, and a third motor 89. The fixed plate 81 is horizontally arranged, with a square material drop hole in its central area. The two connecting plates 82 extend in the front-back direction and are respectively assembled on the upper end of the fixed plate 81 at the left and right sides of the material drop hole. The multiple first mesh wires 83 extend in the left-right direction and are evenly spaced in the front-back direction. The two ends of the first mesh wires 83 are respectively connected and fixed to the two connecting plates 82. The two screws 85 extend in the left-right direction and are distributed on the upper end of the fixed plate 81 at the front and back sides of the material drop hole. Both ends of the screws 85 are mounted on the upper end of the fixed plate 81 via bearings that are rotatably connected to them. The threads of the two screws 85 have opposite directions, and their pitch gradually increases or decreases from one end to the other. Multiple second mesh wires 84 extend in the front-back direction and are distributed at intervals on the left and right. Each of the two ends of the second mesh wires 84 is provided with balls 841, and the balls 841 at both ends are respectively fitted into the thread grooves of the two screws 85. Two second synchronous pulleys 86 are respectively mounted on the left end of the two screws 85. The second synchronous belt 88 is wrapped around the two second synchronous pulleys 86. The third motor 89 is mounted on the upper left end of the fixed plate 81 and is connected to one of the second synchronous pulleys 86 for transmission. The third translation mechanism 9 is connected to the fixed plate 81.

[0048] In the above implementation scheme, the third motor 89 rotates, thereby driving the two screws 85 to rotate synchronously in the same direction through the two second synchronous pulleys 86 and the second synchronous belt 88. Since the spiral directions of the two screws 85 are opposite, but the direction of the screw pitch is the same, the balls 841 at both ends of the multiple second mesh wires 84 will move closer to one end of the screw 85 in the thread groove or the gap will increase. This allows the spacing of the multiple second mesh wires 84 to be adjusted with the forward and reverse rotation of the third motor 89. Since the spacing of the first mesh wires 83 remains unchanged, the mesh size of the screening screen formed by the first mesh wires 83 and the second mesh wires 84 will increase or decrease with the forward and reverse rotation of the third motor 89. This structural design is relatively reasonable and can flexibly adjust the mesh size of the screening screen to achieve effective screening of impurities and grain samples.

[0049] Among them, the first mesh wire 83 and the second mesh wire 84 are both rigid steel wires.

[0050] In a preferred embodiment, the third translation mechanism 9 includes two third guide rails 91, two support plates 92, two third synchronous pulleys 93, a third synchronous belt 94, a fourth motor 95, and a third clamping block 96. The two support plates 92 extend in the left-right direction and are spaced apart. The two third guide rails 91 extend in the left-right direction and are respectively mounted on the two support plates 92. The lower end of the fixing plate 81 is slidably connected to the two third guide rails 91 via a second slider. The two third synchronous pulleys 93 are spaced apart in the left-right direction and rotatably mounted on the upper part of one of the support plates 92. The third synchronous belt 94 surrounds the two third synchronous pulleys 93. The third clamping block 96 is mounted on the third synchronous belt 94 and connected and fixed to the fixing plate 81. The fourth motor 95 is mounted on one of the support plates 92 and is drively connected to one of the third synchronous pulleys 93.

[0051] In the above implementation scheme, the fourth motor 95 runs in both directions and drives the two third synchronous pulleys 93 and the third synchronous belt 94 to rotate, thereby driving the third clamping block 96 to move horizontally in the left and right direction. The fixed plate 81 (that is, the variable pitch screen assembly 8) connected to the third clamping block 96 moves left and right. This design is reasonable and can make the variable pitch screen assembly 8 move smoothly left and right.

[0052] In this embodiment, the lower ends of the two support plates 92 are respectively mounted on the upper end of the platform 11 via uprights.

[0053] In this embodiment, all the electrical components involved are connected to a control system, which has a control host.

[0054] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An online multifunctional grain quality analyzer, characterized in that: The system includes a chassis (1) and a grain conveying line (2), a grain loading and unloading mechanism (3), a material weighing and unloading assembly (4), a first translation mechanism (5), a grain carrier plate (6), a camera (7), a variable-pitch screen assembly (8), a third translation mechanism (9), and a material box (10) respectively disposed in the chassis (1). The chassis (1) has inlets and outlets on the left and right sides. The grain conveying line (2) passes through the inlets and outlets on both sides in the left and right directions. The material box (10) is mounted on the upper left side of the grain conveying line (2) by a bracket. The variable-pitch screen assembly (8) is located above the material box (10) and has a screen that is vertically continuous and has a variable mesh size. The third translation mechanism (9) is connected to the variable-pitch screen assembly (8) and is used to drive the variable-pitch screen assembly. The component (8) is moved horizontally to the top or right side of the material box (10). The grain carrier plate (6) is horizontally positioned above the variable pitch screen assembly (8) and located on the right side of the material box (10). The material storage weighing and unloading assembly (4) is positioned above the grain carrier plate (6). The first translation mechanism (5) is connected to the material storage weighing and unloading assembly (4) and is used to drive the material storage weighing and unloading assembly (4) to move horizontally. The grain picking and placing mechanism (3) is used to pick up grain from the grain conveying line (2) and put it into the material storage weighing and unloading assembly (4). The lower end of the material storage weighing and unloading assembly (4) is provided with a scraper (20). The camera (7) is positioned above the grain carrier plate (6) and connected to the machine vision system.

2. The online multifunctional grain quality analyzer according to claim 1, characterized in that: The chassis (1) includes a platform (11), a cover (12) and a frame (13). The platform (11) is horizontally mounted on the upper end of the frame (13). The cover (12) is mounted on the upper end of the platform (11). The lower left and right sides of the cover (12) are respectively provided with the inlet and outlet. The cover (12) is provided with a door that can be opened or closed.

3. The online multifunctional grain quality analyzer according to claim 2, characterized in that: The door is transparent.

4. The online multifunctional grain quality analyzer according to claim 1, characterized in that: The grain conveying line (2) is a belt conveyor.

5. The online multifunctional grain quality analyzer according to claim 1, characterized in that: The grain picking and placing mechanism (3) includes a picking and placing bracket (31), a suction cup assembly (32), two first synchronous pulleys (33), a first synchronous belt (35), a first motor (36), and a first clamping block (37). The picking and placing bracket (31) is located on one side of the grain conveying line (2). The two first synchronous pulleys (33) are arranged vertically and vertically and are rotatably mounted on the picking and placing bracket (31). The first synchronous belt (35) surrounds the two first synchronous pulleys (33). The first motor (36) is mounted on the picking and placing bracket (31) and is connected to the first synchronous pulley (33) above it. The first clamping block (37) is mounted on the first synchronous belt (35) and is connected and fixed to the suction cup assembly (32). The suction cup assembly (32) is located on the upper right side of the grain conveying line (2).

6. The online multifunctional grain quality analyzer according to claim 1, characterized in that: The material storage weighing and unloading assembly (4) includes a storage bin (41), a mounting plate (42), a gate assembly (43), a weighing device (44), a unloading channel (45), and a positioning plate (46). The mounting plate (42) is horizontally arranged and connected to the first translation mechanism (5). The unloading channel (45) vertically penetrates the mounting plate (42). The positioning plate (46) is horizontally arranged above the unloading channel (45), and one end of it has a discharge port that communicates with the unloading channel (45). The weighing device (44) is mounted on... The storage bin (41) is located at the lower end of the mounting plate (42) and is mounted on the upper end of the mounting plate (42). Both the upper and lower ends of the storage bin (41) are open, and the lower end of the open end is connected and communicates with the discharge port. The gate assembly (43) is installed at the lower end of the storage bin (41) and is used to open or close the lower end of the storage bin (41). The grain loading and unloading mechanism (3) is used to feed grain into the storage bin (41) through the upper end of the storage bin (41). The lower right side of the mounting plate (42) is provided with the scraper (20) extending in the front-back direction.

7. The online multifunctional grain quality analyzer according to claim 6, characterized in that: The first translation mechanism (5) includes two first guide rails (51), a first rack (52), a second motor (53), and a first gear (54). The two first guide rails (51) extend in the left-right direction and are mounted at intervals on the upper front and rear ends of the grain carrier plate (6). The front and rear ends of the lower end of the mounting plate (42) are slidably mounted on the first guide rails (51) via first sliders. The first rack (52) is horizontally mounted in the left-right direction on the upper front and rear ends of the grain carrier plate (6). The second motor (53) is mounted on the upper end of the mounting plate (42). The first gear (54) is connected to the motor shaft of the second motor (53) and meshes with the first rack (52). A detection area is provided in the middle area of ​​the grain carrier plate (6).

8. An online multifunctional grain quality analyzer according to any one of claims 1 to 7, characterized in that: The variable-pitch screen assembly (8) includes a fixed plate (81), two connecting plates (82), multiple straight first mesh wires (83), multiple straight second mesh wires (84), two screws (85), two second synchronous pulleys (86), a second synchronous belt (88), and a third motor (89). The fixed plate (81) is horizontally arranged, with a square material drop hole in its central area. The two connecting plates (82) extend in the front-back direction and are respectively assembled on the upper end of the fixed plate (81) at the left and right sides of the material drop hole. The multiple first mesh wires (83) extend in the left-right direction and are evenly spaced in the front-back direction. The two ends of the first mesh wires (83) are respectively connected and fixed to the two connecting plates (82). The two screws (85) extend in the left-right direction and are distributed on the upper end of the fixed plate (81) at the front and back sides of the material drop hole. 5) The two ends of the screw (85) are respectively mounted on the upper end of the fixed plate (81) through bearings that are rotatably connected to them. The threads of the two screws (85) are opposite, and the pitch of the two screws gradually increases or decreases from the same end to the other end. Multiple second mesh wires (84) extend in the front-back direction and are distributed on the left and right sides at intervals. Each second mesh wire (84) has a ball (841) at both ends, and the ball (841) at both ends is respectively embedded in the thread groove of the two screws (85). Two second synchronous pulleys (86) are respectively mounted on the left end of the two screws (85). The second synchronous belt (88) is wrapped around the two second synchronous pulleys (86). The third motor (89) is mounted on the upper left end of the fixed plate (81) and is connected to one of the second synchronous pulleys (86) for transmission. The third translation mechanism (9) is connected to the fixed plate (81).

9. The online multifunctional grain quality analyzer according to claim 8, characterized in that: The third translation mechanism (9) includes two third guide rails (91), two support plates (92), two third synchronous pulleys (93), a third synchronous belt (94), a fourth motor (95), and a third clamping block (96). The two support plates (92) extend in the left-right direction and are spaced apart front to back. The two third guide rails (91) extend in the left-right direction and are respectively mounted on the two support plates (92). The lower end of the fixing plate (81) is connected to the two third guide rails (91) through a second slider. The sliding connection is provided. The two third synchronous pulleys (93) are distributed at intervals in the left and right directions and are rotatably mounted on the upper part of one of the support plates (92). The third synchronous belt (94) is wrapped around the two third synchronous pulleys (93). The third clamping block (96) is mounted on the third synchronous belt (94) and is connected and fixed to the fixing plate (81). The fourth motor (95) is mounted on one of the support plates (92) and is connected to one of the third synchronous pulleys (93) for transmission.

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