A sampling device for detecting the selection of hawthorn fruits

Abstract

The present application relates to the technical field of hawthorn detection, and discloses a sampling device for hawthorn fruit selection detection, which comprises a chassis, the upper end of the chassis is fixedly connected with a bottom plate, the upper end of the bottom plate is fixedly connected with side plate one and side plate two, the upper end of the bottom plate is fixedly connected with multiple groups of partition plates, the partition plates are located between the side plate one and the side plate two, multiple groups of sampling mechanisms are arranged between the side plate one and the side plate two, a detection mechanism one is arranged on one side of the side plate one, and a detection mechanism two is arranged behind the sampling mechanism. The present application has the advantages that a cooperative sampling concept of "half observation and half juice extraction" is designed, so that the same batch of samples can simultaneously meet the dual requirements of cross-sectional image analysis and physicochemical index detection, and the utilization rate of detection sampling is improved.

Description

Technical Field

[0001] This invention relates to the field of hawthorn detection technology, specifically to a sampling device for hawthorn fruit selection and detection. Background Technology

[0002] With the rapid development of the hawthorn deep processing industry, the market has placed higher demands on the quality grading of hawthorn raw materials. On the one hand, the breeding field needs to select superior varieties with fewer pits, larger fruit size, and higher pulp content to reduce the labor intensity of the pitting process and improve the edible rate. On the other hand, the processing field needs to classify raw materials according to the differences in the content of functional components such as soluble solids, organic acids, and total flavonoids to meet the quality requirements of different end products such as fresh fruit, juice, dried fruit, and extracts. Therefore, designing a hawthorn testing sampling device that can simultaneously perform morphological detection and physicochemical index analysis is of great practical significance for improving the standardization level of the hawthorn industry.

[0003] Patent CN116678708B discloses a sampling device for hawthorn detection, including a support frame and a sieve barrel mounted on the support frame; a drive assembly mounted on the support frame, which drives the sieve barrel to rotate and screen. The device first screens small hawthorns, which fall into a crushing barrel via a guide tube. Then, an auxiliary component first deflects the guide tube to align with the next crushing barrel, and then drives two rotating rings to rotate synchronously in opposite directions, thereby widening the sieve openings. This allows the sieve barrel to continue screening medium-sized hawthorns, which then fall into a crushing barrel. Larger hawthorns are then screened and fall into another crushing barrel. Finally, a crushing component simultaneously crushes the hawthorns in all three crushing barrels into pulp, allowing for the separate acquisition of hawthorn pulp samples of different sizes. This simple and convenient method improves the representativeness of the test samples.

[0004] However, although the aforementioned patents achieve physical separation and crushing sampling based on particle size, their technical approach has obvious limitations: First, after the fruit is completely crushed by the blade, the original cross-section is destroyed, making it impossible to observe the size and number of the pits and their distribution in the pulp, thus losing the ability to detect internal morphological characteristics; Second, after crushing, the pulp and juice are mixed, making it impossible to separate samples, resulting in the inability to simultaneously meet the dual requirements of cross-sectional image analysis and physicochemical index detection in the same batch of samples, leading to low sample utilization. Therefore, we propose a sampling device for hawthorn fruit selection and detection. Summary of the Invention

[0005] The present invention solves the above-mentioned technical problems by adopting the following technical solution: a sampling device for hawthorn fruit selection and detection is provided, including a base frame, a base plate fixedly connected to the upper end of the base frame, a side plate one and a side plate two fixedly connected to the upper end of the base plate, a plurality of partitions fixedly connected to the upper end of the base plate, the partitions being located between the side plate one and the side plate two, a plurality of sampling mechanisms being arranged between the side plate one and the side plate two, a detection mechanism one being arranged on one side of the side plate one, a detection mechanism two being arranged behind the sampling mechanism, the sampling mechanism including a support plate, a collection groove being opened at the upper end of the support plate, and a second conveyor belt being rotatably connected to the outer side of the support plate.

[0006] Preferably, ramps are provided on both sides of the second conveyor belt, and two sets of symmetrical fixing plates are provided above the second conveyor belt. One set of the two sets of fixing plates is fixedly connected to a side plate, and the other set of the two sets of fixing plates is fixedly connected to a partition. One side of the support plate is fixedly connected to the partition. A baffle is fixedly connected between the two sets of fixing plates, and the lower end of the baffle is in contact with the second conveyor belt.

[0007] Preferably, an electric push rod 1 and an electric push rod 2 are provided above the second conveyor belt. A mounting rod is rotatably connected between the side plate 1 and the side plate 2. The electric push rod 1 is fixedly connected to the outside of the mounting rod. An extension plate is fixedly connected to the outside of the mounting rod. The electric push rod 2 is fixedly connected to the extension plate. A pressure plate is fixedly connected to the output end of the electric push rod 2. A motor 3 is provided on one side of the side plate 2. The output end of the motor 3 is fixedly connected to the mounting rod.

[0008] Preferably, the output end of the electric actuator is fixedly connected to a blade, and two sets of mutually symmetrical first connecting rods are fixedly connected to both the front and rear ends of the blade. A sliding groove is opened on the opposite side of each of the two sets of first connecting rods. A rotating rod is slidably connected between the two sets of sliding grooves. A slider is slidably connected to the inner side of one of the two sets of sliding grooves. A motor is installed on the inner side of the slider, and the output end of the motor is fixedly connected to the rotating rod.

[0009] Preferably, a rotating plate is fixedly connected to the outer side of the rotating rod, and two sets of second connecting rods are fixedly connected to the lower end of the rotating plate. A lever is provided between the two sets of second connecting rods, and a second motor is installed on the inner side of one of the two sets of second connecting rods. The output end of the second motor is fixedly connected to the lever.

[0010] Preferably, the detection mechanism includes multiple sets of extension tubes, the upper end of which extends through the base plate to the inside of the collection tank. A conductivity sensor is provided on the inside of the extension tube, and the conductivity sensor is electrically connected to a first display screen. The first display screen is installed on one side of the side plate. A mounting plate is fixedly connected to the inside of the base frame. Multiple collection boxes are provided on one side of the mounting plate, and the collection boxes are located below the extension tubes.

[0011] Preferably, the rear ends of side plate one and side plate two are fixedly connected to a rear plate, the upper ends of side plate one and side plate two are fixedly connected to a top plate, multiple sets of infrared sensors are installed at the lower end of the top plate, the infrared sensors are located above the second conveyor belt, the detection mechanism two includes multiple sets of CCD cameras, the CCD cameras are installed at the lower end of the top plate, the CCD cameras are located above the second conveyor belt, the CCD cameras are electrically connected to a second display screen, and the second display screen is installed at the rear end of the rear plate.

[0012] Preferably, the rear plate has multiple outlets at its rear end, the outlets are located behind the second conveyor belt, a support plate is installed inside the outlet, and a collection box two is provided below the support plate, the collection box two is installed at the rear end of the base frame.

[0013] Preferably, a feeding mechanism is provided at the front of both side plate one and side plate two. The feeding mechanism includes a front plate, the rear end of which is fixedly connected to side plate one and side plate two. A first inlet is provided on one side of the front plate. A first conveyor belt is rotatably connected to the rear end of the front plate. Multiple sets of push plates are provided on the outer side of the first conveyor belt. A connecting plate is fixedly connected to the rear end of the front plate. A second inlet is provided on the inner side of the connecting plate. The inner side of the second inlet widens. The connecting plate is located between the first conveyor belt and the second conveyor belt.

[0014] Compared with the prior art, the present invention provides a sampling device for hawthorn fruit selection and detection, which has the following beneficial effects:

[0015] 1. This sampling device for hawthorn fruit selection and testing involves using two sets of prying blades to move the hawthorn from an end-up or end-down position to a side-up position during sampling. This allows the hawthorn to be precisely divided in half after being cut by the blades, while exposing the pit for easy subsequent testing. The prying blades not only adjust the shape of the hawthorn during cutting but also fix it in place to ensure accurate cutting. In addition, the prying blades can remove the hawthorn half attached to the blades after cutting for convenient subsequent operations.

[0016] 2. This sampling device for hawthorn fruit selection and testing cuts the hawthorn in half, ensuring that the cross-section of each half faces upwards and is exposed to the testing station. Instead of completely crushing the fruit, the device employs a collaborative sampling concept of "half for observation, half for juice extraction." The half of the hawthorn behind the blade is photographed and tested by the second testing unit to examine the morphological parameters of the pit and the growth status of the pulp, and the sample is retained. The remaining half of the hawthorn in front of the blade is crushed to extract juice, which is then analyzed by the first testing unit to obtain data such as total flavonoids and organic acids. This allows the same batch of samples to simultaneously meet the dual requirements of cross-sectional image analysis and physicochemical index testing, improving the utilization rate of the sampling.

[0017] 3. This sampling device for hawthorn fruit selection and testing addresses the natural differences in the pits and flesh of hawthorns of different sizes. When sampling hawthorns of different sizes, the test results of a single batch are highly volatile. By using multiple sets of second conveyor belts and two feed inlets to process the batch of hawthorns, the size of the hawthorns can be classified for testing, further improving the representativeness and comparability of the test sampling data. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the testing mechanism of the present invention;

[0020] Figure 3 Schematic diagram of the sampling mechanism of the present invention Figure 1 ;

[0021] Figure 4 This is a schematic diagram of the feeding mechanism of the present invention;

[0022] Figure 5 Schematic diagram of the sampling mechanism of the present invention Figure 2 ;

[0023] Figure 6 Schematic diagram of the sampling mechanism of the present invention Figure 3 ;

[0024] Figure 7 For the present invention Figure 5 An enlarged schematic diagram of part A of the structure.

[0025] In the diagram: 1. Base frame; 2. Base plate; 3. Side plate 1; 4. Side plate 2; 5. Rear plate; 6. Feeding mechanism; 61. Front plate; 62. Inlet 1; 63. First conveyor belt; 64. Push plate; 65. Connecting plate; 66. Inlet 2; 7. Sampling mechanism; 71. Support plate; 72. Collection trough; 73. Second conveyor belt; 74. Ramp; 75. Fixing plate; 76. Stop bar; 77. Electric push rod 1; 78. Blade; 79. First connecting rod; 710. Slide groove; 711. Rotating rod; 712. Sliding block; 713. Motor 1 714. Turning plate; 715. Second connecting rod; 716. Paddle; 717. Motor II; 718. Electric push rod II; 719. Pressure plate; 8. Detection mechanism I; 81. Extension tube; 82. Conductivity sensor; 83. First display screen; 84. Mounting plate; 85. Collection box I; 9. Detection mechanism II; 91. CCD camera; 92. Second display screen; 10. Top plate; 11. Mounting rod; 12. Extension plate; 13. Motor III; 14. Infrared sensor; 16. Outlet; 17. Carrier plate; 18. Collection box II. Detailed Implementation

[0026] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0027] The following electrical components are all electrically connected to the external PLC controller.

[0028] Please see Figure 1 - Figure 7 A sampling device for hawthorn fruit selection and testing includes a base frame 1. A base plate 2 is fixedly connected to the upper end of the base frame 1. A side plate 3 and a side plate 4 are fixedly connected to the upper end of the base plate 2. Multiple sets of partitions are fixedly connected to the upper end of the base plate 2. The partitions are located between the side plate 3 and the side plate 4. Multiple sampling mechanisms 7 are arranged between the side plate 3 and the side plate 4. A detection mechanism 8 is arranged on one side of the side plate 3. A detection mechanism 9 is arranged behind the sampling mechanism 7. The sampling mechanism 7 includes a support plate 71. A collection groove 72 is opened at the upper end of the support plate 71. A second conveyor belt 73 is rotatably connected to the outer side of the support plate 71.

[0029] In this embodiment, ramps 74 are provided on both sides of the second conveyor belt 73, and two sets of symmetrical fixing plates 75 are provided above the second conveyor belt 73. One set of the two sets of fixing plates 75 is fixedly connected to the side plate 3, and the other set of the two sets of fixing plates 75 is fixedly connected to the partition. One side of the support plate 71 is fixedly connected to the partition. A baffle 76 is fixedly connected between the two sets of fixing plates 75, and the lower end of the baffle 76 is in contact with the second conveyor belt 73.

[0030] Specifically, the juice from crushed hawthorns flows down the slope 74 into the collection tank 72. Regardless of the shape of the hawthorns that fall onto the second conveyor belt 73, when they pass the baffle 76, the nearly ellipsoidal hawthorns will stand upright with their ends facing up or down, thus facilitating the subsequent operation of the paddle 716.

[0031] In this embodiment, electric push rod 1 77 and electric push rod 2 718 are arranged above the second conveyor belt 73. A mounting rod 11 is rotatably connected between side plate 1 3 and side plate 2 4. Electric push rod 1 77 is fixedly connected to the outside of the mounting rod 11. An extension plate 12 is fixedly connected to the outside of the mounting rod 11. Electric push rod 2 718 is fixedly connected to the extension plate 12. A pressure plate 719 is fixedly connected to the output end of electric push rod 2 718. A motor 3 13 is arranged on one side of side plate 2 4. The output end of motor 3 13 is fixedly connected to the mounting rod 11. A blade 78 is fixedly connected to the output end of electric push rod 1 77. Two sets of mutually symmetrical first connecting rods 79 are fixedly connected to both the front and rear ends of the blade 78. Each of the two sets of first connecting rods 79 has a sliding groove 710 on one side opposite to the other. A rotating rod 711 is slidably connected between the two sets of sliding grooves 710. A slider 712 is slidably connected to the inner side of one of the two sets of sliding grooves 710. A motor 713 is installed on the inner side of the slider 712. The output end of the motor 713 is fixedly connected to the rotating rod 711. A rotating plate 714 is fixedly connected to the outer side of the rotating rod 711. Two sets of second connecting rods 715 are fixedly connected to the lower end of the rotating plate 714. A lever 716 is provided between the two sets of second connecting rods 715. A motor 717 is installed on the inner side of one of the two sets of second connecting rods 715. The output end of the motor 717 is fixedly connected to the lever 716.

[0032] Specifically, as the blade 78 moves downward, the paddle 716 first contacts the second conveyor belt 73, and then the electric actuator 77 stops outputting. At this time, the hawthorn is located between the two sets of paddles 716. Subsequently, the motor 713 outputs to make the rotating rod 711 rotate, causing the two sets of paddles 716 to move closer to the hawthorn, thereby turning the hawthorn, which was upright with its end facing up or down, into a horizontal position with its side facing up, and fixing it in place. Next, the electric actuator 77 can continue to push the blade 78 to cut the hawthorn in half. Because some hawthorns contain a lot of water, the cut surface may stick to the blade 78. At this time, the motor 717 can drive the paddle 716 to rotate in the opposite direction, so that the paddle 716 moves around to the top of the hawthorn and continues to rotate, pushing the cut hawthorn off the blade 78 so that the cross-section of the hawthorn faces upward.

[0033] In this embodiment, the detection mechanism 8 includes multiple sets of extension tubes 81. The upper end of the extension tube 81 extends through the base plate 2 to the inside of the collection tank 72. A conductivity sensor 82 is provided inside the extension tube 81. The conductivity sensor 82 is electrically connected to a first display screen 83. The first display screen 83 is installed on one side of the side plate 3. A mounting plate 84 is fixedly connected to the inside of the base frame 1. Multiple sets of collection boxes 85 are provided on one side of the mounting plate 84. The collection boxes 85 are located below the extension tubes 81.

[0034] Specifically, multiple sets of extension tubes 81 are of different lengths. The length of each set of extension tubes 81 corresponds to the distance between each set of collection tanks 72 and collection box 85. Driven by electric push rod 718, the pressure plate 719 crushes the hawthorn ...

[0035] In this embodiment, the rear ends of side plate 1 3 and side plate 2 4 are fixedly connected to a rear plate 5, and the upper ends of side plate 1 3 and side plate 2 4 are fixedly connected to a top plate 10. Multiple sets of infrared sensors 14 are installed at the lower end of the top plate 10. The infrared sensors 14 are located above the second conveyor belt 73. The detection mechanism 2 9 includes multiple sets of CCD cameras 91. The CCD cameras 91 are installed at the lower end of the top plate 10 and above the second conveyor belt 73. The CCD cameras 91 are electrically connected to a second display screen 92. The second display screen 92 is installed at the rear end of the rear plate 5. Multiple sets of outlets 16 are opened at the rear end of the rear plate 5. The outlets 16 are located behind the second conveyor belt 73. A support plate 17 is installed inside the outlet 16. A collection box 2 18 is provided below the support plate 17. The collection box 2 18 is installed at the rear end of the base frame 1.

[0036] Specifically, the CCD camera 91 takes pictures and samples to detect the morphological parameters of the fruit pit and the growth status of the fruit pulp. The data is then transmitted to the second display screen 92. The hawthorns on the second conveyor belt 73 are first collected into the collection box 18 during transportation. Finally, the remaining half hawthorns and the crushed half hawthorns are moved to the support plate 17 for easy collection and preservation by the staff.

[0037] In this embodiment, a feeding mechanism 6 is provided in front of side plate 3 and side plate 4. The feeding mechanism 6 includes a front plate 61. The rear end of the front plate 61 is fixedly connected to side plate 3 and side plate 4. A feed inlet 62 is provided on one side of the front plate 61. A first conveyor belt 63 is rotatably connected to the rear end of the front plate 61. Multiple sets of push plates 64 are provided on the outer side of the first conveyor belt 63. A connecting plate 65 is fixedly connected to the rear end of the front plate 61. A second feed inlet 66 is provided on the inner side of the connecting plate 65. The inner side of the second feed inlet 66 changes from narrow to wide. The connecting plate 65 is located between the first conveyor belt 63 and the second conveyor belt 73.

[0038] Specifically, by using multiple sets of second conveyor belts 73 in combination with the feed inlet 66 to process this batch of hawthorns, the size of the hawthorns can be classified for testing, further improving the representativeness and comparability of the test sampling data.

[0039] In use, the batch of hawthorns to be sampled is poured into inlet 62. The pusher plate 64 moves with the rotation of the first conveyor belt 63, pushing the hawthorns along the connecting plate 65. Smaller hawthorns will first fall onto the first set of second conveyor belts 73 through inlet 66, and larger hawthorns will follow suit. When the hawthorns fall onto the second conveyor belt 73, as the second conveyor belt 73 rotates, it will carry the hawthorns from below the connecting plate 65 towards the rear plate 5. During the movement, regardless of the shape of the hawthorns that fall onto the second conveyor belt 73, when they pass the baffle 76, the approximately ellipsoidal hawthorns will become upright with their ends facing up or down. In the following scenario, when the infrared sensor 14 detects that the hawthorn is the last hawthorn on the second conveyor belt 73, and the hawthorn reaches below the blade 78, the second conveyor belt 73 will stop. Immediately afterwards, the electric actuator 77 will output power to push the blade 78 towards the hawthorn. As the blade 78 moves downwards, the paddle 716 will first contact the second conveyor belt 73. Then, the electric actuator 77 will stop outputting power. At this point, the hawthorn is positioned between the two sets of paddles 716. Subsequently, the motor 713 outputs power to rotate the rotating rod 711, causing the two sets of paddles 716 to move closer to the hawthorn, thereby shifting the hawthorn from an upright position (end facing up or end facing down) to a horizontal position (side facing up) and fixing it in place. Next, the electric actuator 77 can continue to push the blade 78 to cut the hawthorn in half. Because some hawthorns contain a lot of water, the cut surface may stick to the blade 78. At this time, the motor 717 can drive the paddle 716 to rotate in the opposite direction, so that the paddle 716 moves around to the top of the hawthorn and continues to rotate, pushing the cut hawthorn off the blade 78 so that the cross-section of the hawthorn faces upward. Then, the half of the hawthorn located behind the blade 78 continues to move along the second conveyor belt 73 to the bottom of the CCD camera 91 and stops. The CCD camera 91 takes pictures and samples to detect the morphological parameters of the fruit pit and the growth status of the pulp. The data is transmitted to the second display screen 92. In addition, the process of cutting the hawthorn located behind the blade 78 begins. To extract juice from the hawthorn berries in front of blade 78, first, the electric push rod 77 retracts, causing blade 78 to move back. Then, the mounting rod 11 is rotated by motor 3, turning the pressure plate 719 above the hawthorn berry. Driven by electric push rod 2 718, the pressure plate 719 crushes the hawthorn berry, and the juice flows down the slope 74 into the collection tank 72. It then enters the extension tube 81, flows through the conductivity sensor 82 to detect data such as total flavonoids and organic acids, and transmits the data to the first display screen 83. Finally, with the operation of the second conveyor belt 73, the remaining hawthorn berry and the crushed hawthorn berry are moved to the support plate 17 for easy collection and preservation by staff.

[0040] 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 sampling device for hawthorn fruit selection and testing, comprising a base frame (1), characterized in that: The upper end of the base frame (1) is fixedly connected to a base plate (2). The upper end of the base plate (2) is fixedly connected to a side plate one (3) and a side plate two (4). The upper end of the base plate (2) is fixedly connected to multiple sets of partitions. The partitions are located between the side plate one (3) and the side plate two (4). Multiple sets of sampling mechanisms (7) are arranged between the side plate one (3) and the side plate two (4). A detection mechanism one (8) is arranged on one side of the side plate one (3). A detection mechanism two (9) is arranged behind the sampling mechanism (7). The sampling mechanism (7) includes a support plate (71). A collection groove (72) is opened at the upper end of the support plate (71). A second conveyor belt (73) is rotatably connected to the outer side of the support plate (71).

2. The sampling device for hawthorn fruit selection and detection according to claim 1, characterized in that: Both sides of the second conveyor belt (73) are provided with ramps (74). Two sets of symmetrical fixed plates (75) are provided above the second conveyor belt (73). One set of the two sets of fixed plates (75) is fixedly connected to the side plate (3), and the other set of the two sets of fixed plates (75) is fixedly connected to the partition. One side of the support plate (71) is fixedly connected to the partition. A baffle (76) is fixedly connected between the two sets of fixed plates (75). The lower end of the baffle (76) is in contact with the second conveyor belt (73).

3. The sampling device for hawthorn fruit selection and detection according to claim 1, characterized in that: Above the second conveyor belt (73) are electric push rod one (77) and electric push rod two (718). The side plate one (3) and the side plate two (4) are rotatably connected by a mounting rod (11). The electric push rod one (77) is fixedly connected to the outside of the mounting rod (11). The outside of the mounting rod (11) is fixedly connected to an extension plate (12). The electric push rod two (718) is fixedly connected to the extension plate (12). The output end of the electric push rod two (718) is fixedly connected to a pressure plate (719). A motor three (13) is provided on one side of the side plate two (4). The output end of the motor three (13) is fixedly connected to the mounting rod (11).

4. The sampling device for hawthorn fruit selection and detection according to claim 3, characterized in that: The output end of the electric actuator (77) is fixedly connected to a blade (78). Both ends of the blade (78) are fixedly connected to two sets of symmetrical first connecting rods (79). Each set of first connecting rods (79) has a sliding groove (710) on one side opposite to the other. A rotating rod (711) is slidably connected between the two sets of sliding grooves (710). A slider (712) is slidably connected to the inner side of one set of the two sets of sliding grooves (710). A motor (713) is installed on the inner side of the slider (712). The output end of the motor (713) is fixedly connected to the rotating rod (711).

5. A sampling device for hawthorn fruit selection and detection according to claim 4, characterized in that: A rotating plate (714) is fixedly connected to the outer side of the rotating rod (711). Two sets of second connecting rods (715) are fixedly connected to the lower end of the rotating plate (714). A lever (716) is provided between the two sets of second connecting rods (715). A second motor (717) is installed on the inner side of one of the two sets of second connecting rods (715). The output end of the second motor (717) is fixedly connected to the lever (716).

6. The sampling device for hawthorn fruit selection and detection according to claim 1, characterized in that: The detection mechanism (8) includes multiple sets of extension tubes (81). The upper end of the extension tube (81) extends through the base plate (2) to the inside of the collection tank (72). A conductivity sensor (82) is provided on the inside of the extension tube (81). The conductivity sensor (82) is electrically connected to a first display screen (83). The first display screen (83) is installed on one side of the side plate (3). An installation plate (84) is fixedly connected to the inside of the base frame (1). Multiple sets of collection boxes (85) are provided on one side of the installation plate (84). The collection boxes (85) are located below the extension tube (81).

7. The sampling device for hawthorn fruit selection and detection according to claim 1, characterized in that: The rear ends of the first side plate (3) and the second side plate (4) are fixedly connected to the rear plate (5). The upper ends of the first side plate (3) and the second side plate (4) are fixedly connected to the top plate (10). Multiple sets of infrared sensors (14) are installed at the lower end of the top plate (10). The infrared sensors (14) are located above the second conveyor belt (73). The second detection mechanism (9) includes multiple sets of CCD cameras (91). The CCD cameras (91) are installed at the lower end of the top plate (10). The CCD cameras (91) are located above the second conveyor belt (73). The CCD cameras (91) are electrically connected to the second display screen (92). The second display screen (92) is installed at the rear end of the rear plate (5).

8. A sampling device for hawthorn fruit selection and detection according to claim 7, characterized in that: The rear plate (5) has multiple outlets (16) at its rear end. The outlets (16) are located behind the second conveyor belt (73). A bearing plate (17) is installed inside the outlets (16). A collection box (18) is provided below the bearing plate (17). The collection box (18) is installed at the rear end of the base frame (1).

9. A sampling device for hawthorn fruit selection and detection according to claim 1, characterized in that: A feeding mechanism (6) is provided in front of the first side plate (3) and the second side plate (4). The feeding mechanism (6) includes a front plate (61). The rear end of the front plate (61) is fixedly connected to the first side plate (3) and the second side plate (4). A feed inlet (62) is opened on one side of the front plate (61). A first conveyor belt (63) is rotatably connected to the rear end of the front plate (61). Multiple sets of push plates (64) are provided on the outer side of the first conveyor belt (63). A connecting plate (65) is fixedly connected to the rear end of the front plate (61). A second feed inlet (66) is opened on the inner side of the connecting plate (65). The inner side of the second feed inlet (66) changes from narrow to wide. The connecting plate (65) is located between the first conveyor belt (63) and the second conveyor belt (73).

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