A self-propelled pineapple harvester capable of pre-cutting the leaves of the pineapple

Abstract

The present application relates to a kind of self-propelled pineapple harvester of pre-cutting pineapple leaf, including vehicle body, installation on vehicle body picking mechanism, conveying mechanism, lifting mechanism, collection basket;Vehicle body is also provided with driving area, and the bottom side of vehicle body is also installed with walking mechanism;Wherein, picking mechanism includes picking plate;The front side of picking plate is provided with stem guide notch;The bottom side of picking plate is also installed with stem cutting assembly;The bottom side of picking plate is also provided with first leaf cutting mechanism;First leaf cutting mechanism is used to cut the leaf of pineapple plant;Stem cutting assembly is used to cut the stem of pineapple plant, realize the picking of pineapple fruit.The present application relates to a kind of self-propelled pineapple harvester of pre-cutting pineapple leaf, can pre-cut the leaf around pineapple fruit, so that pineapple fruit is easier to pick, reduce the influence brought by pineapple leaf;Can satisfy the mechanized harvesting of pineapple in different plots in field, reduce labor intensity, improve pineapple harvesting efficiency.

Description

Technical Field

[0001] This invention relates to the field of pineapple harvesting equipment, and in particular to a self-propelled pineapple harvester capable of pre-cutting pineapple leaves. Background Technology

[0002] Pineapple harvesting is highly seasonal, with a peak harvest period of only about two weeks. Currently, apart from a few orchards equipped with semi-mechanized auxiliary devices, fruit harvesting in China is mainly done manually; the manpower required for the entire harvesting operation in the short term accounts for 50% of the total cost of pineapple production.

[0003] Pineapple leaves are arranged in a spiral and grow in clusters on the stem. When the pineapple is ripe, the leaves are sword-shaped. Some pineapple varieties also have hard thorns growing on the edges of the leaves, which can easily prick people. Manual harvesting can easily damage the hands of fruit farmers and seriously affect harvesting efficiency.

[0004] With a growing labor shortage, farmers hope to change their situation through mechanized harvesting. Therefore, researching and developing pineapple harvesting machinery and equipment is of great significance for alleviating labor shortages, stabilizing harvesting quality, reducing labor intensity, and improving harvesting and transportation efficiency, representing a future development trend. Although more and more people are investing in the research of pineapple harvesting machinery and have proposed many solutions, there are still shortcomings in this research. For example, the harvesting quality of traditional harvesting machinery is greatly affected by the surrounding leaves. To address these shortcomings, a self-propelled, adjustable-height harvesting platform pineapple harvester with pre-cut pineapple leaves has been designed. This improves the quality of pineapple harvesting and the automation level of the machinery, enabling large-scale, rapid harvesting of pineapples, significantly reducing the labor intensity of workers, and improving the quality and efficiency of pineapple harvesting. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a self-propelled pineapple harvester capable of pre-cutting pineapple leaves. This pre-cutting mechanism makes the pineapple fruit easier to harvest, reducing the adverse effects of the leaves. It can meet the needs of mechanized harvesting of pineapples in different parts of the field, greatly reducing labor intensity and improving the efficiency of pineapple harvesting.

[0006] The technical solution adopted by this invention to solve its technical problem is: a self-propelled pineapple harvester capable of pre-cutting pineapple leaves, comprising a vehicle body, a picking mechanism, a conveying mechanism, a lifting mechanism, and a collection basket installed sequentially from front to back on the vehicle body; the vehicle body also has a driver's area, and a walking mechanism is installed on the bottom side of the vehicle body; wherein, the picking mechanism includes a picking plate; the front side of the picking plate has two stem guide slots distributed on the left and right and in a front-back direction; the bottom side of the picking plate, located at the rear end area of ​​the stem guide slots, also has a stem cutting component installed; the bottom side of the picking plate also has a first leaf cutting mechanism; the first leaf cutting mechanism is used to cut the leaves of the pineapple plant before entering the stem guide slots; the stem cutting component is used to cut the stems of the pineapple plant after entering the rear end of the stem guide slots, thereby realizing the harvesting of pineapple fruits; the conveying mechanism is used to receive pineapple fruits and output them to the lifting mechanism; the lifting mechanism is used to lift the pineapple fruits and convey them to the collection basket; the collection basket is used to store pineapple fruits.

[0007] Furthermore, the stalk cutting assembly includes a stalk cutting motor and a stalk cutting disc blade fixed to the output end of the stalk cutting motor; the stalk cutting motor is fixed to the bottom side of the harvesting board via a stalk cutting mounting bracket; the cutting range of the stalk cutting disc blade covers the rear end area of ​​the stalk guide groove.

[0008] Furthermore, the first leaf cutting mechanism includes a first fixed frame for leaf cutting fixed to the bottom side of the picking board and located in the area between two stem guide slots, and a second fixed frame for leaf cutting fixed to the bottom side of the picking board and located in the left and right areas respectively; a plurality of first leaf cutting components are fixed to the front side of the first fixed frame for leaf cutting; a movable frame for leaf cutting is hinged to the front side of the second fixed frame for leaf cutting; a first hydraulic telescopic rod is also hinged between the second fixed frame for leaf cutting and the movable frame for leaf cutting; a plurality of first leaf cutting components are fixed to the front side of the movable frame for leaf cutting.

[0009] Furthermore, the first blade cutting assembly includes a first cutting motor and a blade cutting disc blade fixed to the output end of the first cutting motor; the first cutting motor is fixed to the corresponding blade cutting first fixed frame or blade cutting movable frame via a first cutting mounting bracket.

[0010] Furthermore, the conveying mechanism includes a conveying box located behind the picking board; the front side of the conveying box has a conveying inlet corresponding to the stalk guide groove; the conveying box is also equipped with an auger; the conveying mechanism also includes an auger motor mounted on the conveying box; the output end of the auger motor is connected to the auger via a first chain and sprocket transmission mechanism; the conveying box has a conveying outlet at a position corresponding to the auger output end; this conveying outlet corresponds to the inlet end of the lifting mechanism.

[0011] Furthermore, a second blade cutting mechanism is fixed to the front side of the conveyor box; the second blade cutting mechanism includes blade comb plates fixed to the left and right sides of the conveyor inlet; the blade comb plates are provided with multiple blade comb teeth arranged vertically in the front and rear directions; a blade groove is formed between two adjacent blade comb teeth; the second blade cutting mechanism also includes a second blade cutting assembly fixed to the front side of the conveyor box; the second blade cutting assembly is used to cut the blades that are stuck in the blade groove.

[0012] Furthermore, the second blade cutting assembly includes a second cutting motor and a blade cutting long blade fixed to the output end of the second cutting motor; the second cutting motor is fixed to the front side of the conveyor box via a second cutting mounting bracket; the blade cutting long blade is parallel to the blade comb plate and corresponds to the blade slot.

[0013] Furthermore, the conveying mechanism is mounted on the vehicle body via a lifting mechanism; an adjusting rod is provided on the rear side of the conveying box; the lifting mechanism includes a support rod fixed to the vehicle body and a lifting rotating rod; the lifting rotating rod is L-shaped, with one end hinged to the top of the support rod and the other end hinged to the area near the front of the adjusting rod; the lifting mechanism also includes a second hydraulic telescopic rod; the fixed end of the second hydraulic telescopic rod is hinged to the support rod, and the telescopic end of the second hydraulic telescopic rod is hinged to the area near the adjusting rod of the lifting rotating rod; the lifting mechanism also includes a third hydraulic telescopic rod; the fixed end of the third hydraulic telescopic rod is hinged to the lifting rotating rod, and the telescopic end of the third hydraulic telescopic rod is hinged to the area near the rear of the adjusting rod.

[0014] Furthermore, the lifting mechanism is inclined at the front and lower at the rear, having a horizontal section at the front and an inclined section at the rear of the horizontal section; the lifting mechanism includes two lifting mounting frames fixed to the vehicle body and distributed left and right, a lifting drive shaft and multiple lifting driven shafts installed between the two lifting mounting frames, and a lifting conveyor belt wound around the lifting drive shaft and multiple lifting driven shafts; multiple partitions are evenly fixed along the length of the lifting conveyor belt to prevent pineapple fruits from slipping off the inclined section of the lifting mechanism; a lifting motor is also fixed to the vehicle body; the output end of the lifting motor is connected to the lifting drive shaft through a second chain and sprocket transmission mechanism; baffles are also fixed on the lifting mounting frames at the front and left and right sides of the lifting conveyor belt.

[0015] Furthermore, the walking mechanism is a tracked walking mechanism.

[0016] Advantages of the present invention: The self-propelled pineapple harvester of the present invention can pre-cut the leaves around the pineapple fruit, making the pineapple fruit easier to pick and reducing the adverse effects of the pineapple leaves; it can meet the mechanized harvesting of pineapples in different parts of the field, greatly reducing labor intensity and improving the efficiency of pineapple harvesting. Attached Figure Description

[0017] Figure 1 A perspective view of a self-propelled pineapple harvester capable of pre-cutting pineapple leaves, as an embodiment;

[0018] Figure 2 This is a three-dimensional schematic diagram of the assembly of the picking mechanism, conveying mechanism, first leaf cutting mechanism and second leaf cutting mechanism of a self-propelled pineapple harvester capable of pre-cutting pineapple leaves, as an embodiment.

[0019] Figure 3 This is a three-dimensional schematic diagram from another angle showing the assembly of the picking mechanism, conveying mechanism, first blade cutting mechanism and second blade cutting mechanism of a self-propelled pineapple harvester capable of pre-cutting pineapple leaves, as described in an embodiment.

[0020] Figure 4 This is a three-dimensional schematic diagram of the assembly of a second fixed frame for leaf cutting, a movable frame for leaf cutting, a first hydraulic telescopic rod, and a first leaf cutting component in a self-propelled pineapple harvester capable of pre-cutting pineapple leaves, as described in an embodiment.

[0021] Figure 5 for Figure 2 A magnified view of a portion of region A;

[0022] Figure 6 A left-side schematic diagram of a self-propelled pineapple harvester capable of pre-cutting pineapple leaves, as an embodiment;

[0023] Figure 7 for Figure 6 A magnified view of a portion of region B;

[0024] Figure 8 A perspective view of the lifting mechanism of a self-propelled pineapple harvester capable of pre-cutting pineapple leaves, as an embodiment;

[0025] Figure 9 This is a perspective view of another embodiment of a self-propelled pineapple harvester capable of pre-cutting pineapple leaves;

[0026] Among them, 1-vehicle body, 2-harvesting mechanism, 3-conveying mechanism, 4-lifting mechanism, 5-collection basket, 6-first blade cutting mechanism, 7-second blade cutting mechanism, 8-lifting mechanism, 11-driving area, 12-walking mechanism, 21-harvesting plate, 22-stalk guide groove, 23-stalk cutting assembly, 231-stalk cutting motor, 232-stalk cutting disc blade, 233-stalk cutting mounting frame, 31-conveying box, 32-auger, 33-auger motor, 34-first chain and sprocket transmission mechanism, 35-adjusting rod, 311-conveying inlet, 312-conveying outlet, 41-lifting mounting frame, 42-lifting drive shaft, 43-lifting driven shaft, 44-lifting conveyor belt, 4 5-Partition plate, 46-Baffle plate, 47-Lifting motor, 48-Second chain and sprocket transmission mechanism, 61-First fixed frame for blade cutting, 62-Second fixed frame for blade cutting, 63-Modible frame for blade cutting, 64-First hydraulic telescopic rod, 65-First blade cutting assembly, 651-First cutting motor, 652-Blade cutting disc blade, 653-First cutting mounting frame, 71-Blade comb plate, 72-Second blade cutting assembly, 711-Blade comb teeth, 712-Blade slot, 721-Second cutting motor, 722-Long blade for blade cutting, 723-Second cutting mounting frame, 81-Support rod, 82-Lifting rotating rod, 83-Second hydraulic telescopic rod, 84-Third hydraulic telescopic rod. Detailed Implementation

[0027] To enhance understanding of the present invention, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. These embodiments are only used to explain the invention and do not limit the scope of protection of the invention.

[0028] Example

[0029] Please refer to Figures 1 to 9As shown, this embodiment provides a self-propelled pineapple harvester capable of pre-cutting pineapple leaves, including a vehicle body 1, a harvesting mechanism 2, a conveying mechanism 3, a lifting mechanism 4, and a collection basket 5, which are installed sequentially from front to back on the vehicle body 1; the vehicle body 1 also has a driver's area 11, and a walking mechanism 12 is installed on the bottom side of the vehicle body 1; wherein, the harvesting mechanism includes a harvesting plate 21; the front side of the harvesting plate 21 has two stem guide slots 22 distributed on the left and right and in a front-back direction; the bottom side of the harvesting plate 21 is also equipped with a harvesting mechanism 21 at the rear end of the stem guide slots 22. The pineapple plant has a stem cutting assembly 23; a first leaf cutting mechanism 6 is also provided on the bottom side of the picking plate 21; the first leaf cutting mechanism 6 is used to cut the leaves of the pineapple plant before it enters the stem guide groove 22; the stem cutting assembly 23 is used to cut the stem of the pineapple plant after it enters the stem guide groove 22, thereby realizing the picking of pineapple fruits; the conveying mechanism 3 is used to receive pineapple fruits and output them to the lifting mechanism 4; the lifting mechanism 4 is used to lift the pineapple fruits and convey them to the collection basket 5; the collection basket 5 is used to store pineapple fruits.

[0030] Refer to Figure 3 As shown, the stem cutting assembly 23 includes a stem cutting motor 231 and a stem cutting disc blade 232 fixed to the output end of the stem cutting motor 231. The stem cutting motor 231 is fixed to the bottom side of the harvesting plate 21 via a stem cutting mounting bracket 233. The cutting range of the stem cutting disc blade 232 covers the rear end area of ​​the stem guide groove 22. The stem cutting motor 231 drives the stem cutting disc blade 232 to cut the stem of the pineapple plant, thereby separating the pineapple fruit from the stem.

[0031] Refer to Figure 2 and Figure 4 As shown, the first leaf cutting mechanism 6 includes a first fixed frame 61 for leaf cutting fixedly fixed to the bottom side of the picking plate 21 and located in the area between the two stem guide slots 22, and a second fixed frame 62 for leaf cutting fixedly fixed to the bottom side of the picking plate 21 and located in the left and right areas respectively. A plurality of first leaf cutting components 65 arranged vertically are fixed to the front side of the first fixed frame 61. A movable frame 63 for leaf cutting is hinged to the front side of the second fixed frame 62. A first hydraulic telescopic rod 64 is also hinged between the second fixed frame 62 and the movable frame 63. A plurality of first leaf cutting components 65 arranged vertically are fixed to the front side of the movable frame 63. By extending and retracting the first hydraulic telescopic rod 64 and with the hinged connection, the movable frame 63 for leaf cutting rotates, thereby adjusting the distance between the first leaf cutting components 65 on the front side of the movable frame 63 and the first leaf cutting components 65 on the front side of the first fixed frame 61, thus controlling the leaf cutting range of the pineapple plant before entering the stem guide slot 22.

[0032] Refer to Figure 4 As shown, the first blade cutting assembly 65 includes a first cutting motor 651 and a blade cutting disc blade 652 fixed to the output end of the first cutting motor 651. The first cutting motor 651 is fixed to the corresponding blade cutting first fixed frame 61 or blade cutting movable frame 63 via a first cutting mounting bracket 653. The first cutting motor 651 drives the blade cutting disc blade 652 to cut the blade.

[0033] Refer to Figure 2 and Figure 3 As shown, the conveying mechanism 3 includes a conveying box 31 located behind the picking plate 21; a conveying inlet 311 corresponding to the stem guide groove 22 is provided on the front side of the conveying box 31; the conveying box 31 is also equipped with an auger 32; the conveying mechanism 3 also includes an auger motor 33 installed on the conveying box 31; the output end of the auger motor 33 is connected to the auger 32 via a first chain and sprocket transmission mechanism 34; the conveying box 31 has a conveying outlet 312 at a position corresponding to the output end of the auger 32; this conveying outlet 312 corresponds to the inlet end of the lifting mechanism 4. The auger motor 33 drives the auger 32 to rotate via chain transmission, thereby conveying the pineapple fruit entering the conveying box 31 to the side. When the pineapple fruit is conveyed to the conveying outlet 312, it is sent out of the conveying box 31 and enters the lifting mechanism 4.

[0034] Refer to Figure 2 and Figure 5 As shown, a second blade cutting mechanism 7 is also fixed to the front side of the conveyor box 31; the second blade cutting mechanism 7 includes blade comb plates 71 fixed to the left and right sides of the conveyor inlet 311; the blade comb plates 71 are provided with multiple blade comb teeth 711 arranged vertically in the front and back directions; a blade groove 712 is formed between two adjacent blade comb teeth; the second blade cutting mechanism 7 also includes a second blade cutting assembly 72 fixed to the front side of the conveyor box 31; the second blade cutting assembly 72 is used to cut the leaves that are stuck in the blade groove 712. When the pineapple plant enters the rear end area of ​​the stem guide groove 22, the leaves of the pineapple plant near the pineapple fruit will also enter the blade groove 712, and these leaves will be cut by the second blade cutting assembly 72.

[0035] Refer to Figure 5As shown, the second blade cutting assembly 72 includes a second cutting motor 721 and a long blade cutting blade 722 fixed to the output end of the second cutting motor 721. The second cutting motor 721 is fixed to the front side of the conveyor box 31 via a second cutting mounting bracket 723. The long blade cutting blade 722 is parallel to the blade comb plate 71 and corresponds to the blade slot 712. The second cutting motor 721 drives the long blade cutting blade 722 to cut the blade.

[0036] Refer to Figure 6 and Figure 7 As shown, the conveying mechanism 3 is mounted on the vehicle body 1 via the lifting mechanism 8; an adjusting rod 35 is provided on the rear side of the conveying box 31; the lifting mechanism 8 includes a support rod 81 fixed to the vehicle body and a lifting rotating rod 82; the lifting rotating rod 82 is L-shaped, with one end hinged to the top of the support rod 81 and the other end hinged to the area near the front of the adjusting rod 35; the lifting mechanism 8 also includes a second hydraulic telescopic rod 83; the fixed end of the second hydraulic telescopic rod 83 is hinged to the support rod 81, and the telescopic end of the second hydraulic telescopic rod 83 is hinged to the area near the adjusting rod 35 of the lifting rotating rod 82; the lifting mechanism 8 also includes a third hydraulic telescopic rod 84; the fixed end of the third hydraulic telescopic rod 84 is hinged to the lifting rotating rod 82, and the telescopic end of the third hydraulic telescopic rod 84 is hinged to the area near the rear of the adjusting rod 35. Specifically, the fixed end of the second hydraulic telescopic rod 83 is hinged to an appropriate position in the middle area of ​​the support rod 81, and the telescopic end of the second hydraulic telescopic rod 83 is hinged to an appropriate position in the middle area of ​​the arm of the L-shaped lifting rotating rod 82 that is hinged to the adjusting rod 35; the fixed end of the third hydraulic telescopic rod 84 is hinged to an appropriate position on the arm of the L-shaped lifting rotating rod 82 that is hinged to the support rod 81 and close to the other arm, and the telescopic end of the third hydraulic telescopic rod 84 is hinged to the area of ​​the adjusting rod 35 near the rear side; by controlling the extension and retraction of the second hydraulic telescopic rod 83, the lifting rotating rod rotates around the hinge point with the support rod 81, thereby realizing the overall height adjustment of the structure of the harvesting mechanism, conveying mechanism, first blade cutting mechanism and second blade cutting mechanism assembly; by controlling the extension and retraction of the third hydraulic telescopic rod 84, the adjusting rod 35 rotates around the hinge point with the lifting rotating rod 82, thereby realizing the adjustment of the overall tilt angle of the structure of the harvesting mechanism, conveying mechanism, first blade cutting mechanism and second blade cutting mechanism assembly.

[0037] Refer to Figure 8As shown, the lifting mechanism 4 is inclined at the front and lower at the rear, having a horizontal section at the front and an inclined section at the rear of the horizontal section; the lifting mechanism 4 includes two lifting mounting frames 41 fixed to the vehicle body 1 and distributed left and right, a lifting drive shaft 42 and multiple lifting driven shafts 43 installed between the two lifting mounting frames 41, and a lifting conveyor belt 44 wound around the lifting drive shaft 42 and multiple lifting driven shafts 43; multiple partitions 45 are evenly fixed along the length of the lifting conveyor belt 44 to prevent pineapple fruits from slipping off the inclined section of the lifting mechanism 4; a lifting motor 47 is also fixed on the vehicle body 1; the output end of the lifting motor 47 is connected to the lifting drive shaft 42 through a second chain sprocket transmission mechanism 48; baffles 46 are also fixed on the lifting mounting frames 41 at the front and left and right sides of the lifting conveyor belt. In this embodiment, the lifting motor 47 drives the lifting conveyor belt 44 to move, and the partition 45 is used to transport the pineapple fruit backward and upward. The design of the baffle 46 can ensure that the pineapple fruit can fall onto the lifting conveyor belt 44 after being sent out of the conveyor box. At the same time, it can also prevent the pineapple fruit from falling off the side of the lifting conveyor belt 44.

[0038] Refer to Figure 1 and Figure 9 As shown, the walking mechanism 12 is a tracked walking mechanism.

[0039] This embodiment describes a self-propelled pineapple harvester capable of pre-cutting pineapple leaves, designed for planting pineapples in two rows, and harvesting both rows of pineapples simultaneously.

[0040] This embodiment describes a self-propelled pineapple harvester capable of pre-cutting pineapple leaves. During operation, a worker operates the harvester from the driver's area. The walking mechanism is controlled to move the harvester to the starting point, aligning the two stem guide slots with a row of pineapples. After the harvesting mechanism passes the pineapple fruit, the second and third hydraulic telescopic rods are used to adjust the height and tilt angle of the harvesting mechanism. The tilt angle must ensure that the pineapple fruit can roll backward under its own weight. The first hydraulic telescopic rod controls the cutting range of the first blade cutting mechanism 6, ensuring that the surrounding leaves are cut without damaging the pineapple fruit. After adjustment, the first cutting motor, second cutting motor, stem cutting motor, auger motor, and lifting motor are started. The walking mechanism is then operated to move the harvester to the starting point. The walking pineapple harvester moves forward, and the leaves around the pineapple fruit are first cut off by the first blade cutting mechanism. The pineapple stem, guided by the stem guide groove, enters the end area of ​​the stem guide groove, where it is cut by the high-speed rotating stem cutting disc blade and separated from the pineapple fruit. At the same time, some leaves of the pineapple fruit also enter the blade groove and are cut off by the high-speed rotating blade cutting long blade. Under its own weight, the pineapple fruit enters the conveyor box along the inclined picking plate. Under the rotation of the auger, it is conveyed to the side to the conveyor box outlet. Under its own weight, the pineapple fruit rolls out of the conveyor box along the inclined bottom plate and falls onto the lifting conveyor belt of the lifting mechanism. Under the action of the partition, the pineapple fruit moves backward and upward with the rotation of the lifting conveyor belt, and then falls into the collection basket. As the pineapples are harvested, once the collection baskets are full, the workers operate the walking mechanism to guide the self-propelled pineapple harvester to the designated unloading point. After unloading, the pineapple harvesting operation continues. Once the harvest is complete, the first cutting motor, the second cutting motor, the stalk cutting motor, the auger motor, and the lifting motor are shut down. The walking mechanism is then operated to move the self-propelled pineapple harvester away from the pineapple field, thus completing the pineapple harvesting operation.

[0041] This embodiment describes a self-propelled pineapple harvester capable of pre-cutting pineapple leaves. The first leaf cutting mechanism pre-cuts the leaves surrounding the pineapple fruit, making it easier to harvest and reducing the impact of the leaves. This also facilitates worker movement within the pineapple field. The second leaf cutting mechanism further removes excess leaves during harvesting. The lifting mechanism allows for overall height and tilt angle adjustment of the harvesting mechanism, conveying mechanism, first leaf cutting mechanism, and second leaf cutting mechanism assembly, better adapting to harvesting pineapple fruits at different heights. This enables mechanized harvesting of pineapples in different areas of the field, significantly reducing labor intensity and improving harvesting efficiency.

[0042] The above embodiments should not limit the present invention in any way. All technical solutions obtained by equivalent substitution or equivalent conversion fall within the protection scope of the present invention.

Claims

1. A self-propelled pineapple harvester capable of pre-cutting pineapple leaves, characterized in that: The vehicle includes a vehicle body (1), a picking mechanism (2), a conveying mechanism (3), a lifting mechanism (4), and a collection basket (5) installed sequentially from front to back on the vehicle body (1); the vehicle body (1) is also provided with a driver's area (11), and a walking mechanism (12) is also installed on the bottom side of the vehicle body (1); wherein, the picking mechanism includes a picking plate (21); the front side of the picking plate (21) is provided with two stem guide slots (22) distributed on the left and right and in the front-back direction; the bottom side of the picking plate (21) is also provided with a stem cutting component (23) in the rear end area of ​​the stem guide slots (22); The bottom side of the picking plate (21) is also provided with a first leaf cutting mechanism (6); the first leaf cutting mechanism (6) is used to cut the leaves of the pineapple plant before entering the stem guide groove (22); the stem cutting assembly (23) is used to cut the stem of the pineapple plant after entering the stem guide groove (22), thereby realizing the picking of pineapple fruit; the conveying mechanism (3) is used to receive pineapple fruit and output it to the lifting mechanism (4); the lifting mechanism (4) is used to lift the pineapple fruit and convey it to the collection basket (5); the collection basket (5) is used to store pineapple fruit; The first leaf cutting mechanism (6) includes a first leaf cutting fixing frame (61) fixed to the bottom side of the picking board (21) and located in the area between the two stem guide slots (22), and a second leaf cutting fixing frame (62) fixed to the bottom side of the picking board (21) and located in the left and right areas respectively; a plurality of first leaf cutting components (65) arranged vertically are fixed to the front side of the first leaf cutting fixing frame (61); a leaf cutting movable frame (63) is hinged to the front side of the second leaf cutting fixing frame (62); a first hydraulic telescopic rod (64) is also hinged between the second leaf cutting fixing frame (62) and the leaf cutting movable frame (63); a plurality of first leaf cutting components (65) arranged vertically are fixed to the front side of the leaf cutting movable frame (63).

2. The self-propelled pineapple harvester capable of pre-cutting pineapple leaves according to claim 1, characterized in that: The stem cutting assembly (23) includes a stem cutting motor (231) and a stem cutting disc blade (232) fixed to the output end of the stem cutting motor (231); the stem cutting motor (231) is fixed to the bottom side of the picking board (21) by a stem cutting mounting bracket (233); the cutting range of the stem cutting disc blade (232) covers the rear end area of ​​the stem guide groove (22).

3. A self-propelled pineapple harvester capable of pre-cutting pineapple leaves according to claim 1, characterized in that: The first blade cutting assembly (65) includes a first cutting motor (651) and a blade cutting disc blade (652) fixed to the output end of the first cutting motor (651); the first cutting motor (651) is fixed to the corresponding blade cutting first fixed frame (61) or blade cutting movable frame (63) through the first cutting mounting frame (653).

4. A self-propelled pineapple harvester capable of pre-cutting pineapple leaves according to claim 1, characterized in that: The conveying mechanism (3) includes a conveying box (31) located on the rear side of the picking board (21); the front side of the conveying box (31) is provided with a conveying inlet (311) corresponding to the stem guide groove (22); the conveying box (31) is also equipped with an auger (32); the conveying mechanism (3) also includes an auger motor (33) installed on the conveying box (31); the output end of the auger motor (33) is connected to the auger (32) through a first chain sprocket transmission mechanism (34); the conveying box (31) is provided with a conveying outlet (312) at a position corresponding to the output end of the auger (32); the conveying outlet (312) corresponds to the inlet end of the lifting mechanism (4).

5. A self-propelled pineapple harvester capable of pre-cutting pineapple leaves according to claim 4, characterized in that: A second blade cutting mechanism (7) is also fixed to the front side of the conveying box (31); the second blade cutting mechanism (7) includes blade comb plates (71) fixed to the left and right sides of the conveying inlet (311); the blade comb plates (71) are provided with multiple blade comb teeth (711) arranged vertically in the front and back directions; a blade groove (712) is formed between two adjacent blade comb teeth; the second blade cutting mechanism (7) also includes a second blade cutting assembly (72) fixed to the front side of the conveying box (31); the second blade cutting assembly (72) is used to cut the blades that are stuck in the blade groove (712).

6. A self-propelled pineapple harvester capable of pre-cutting pineapple leaves according to claim 5, characterized in that: The second blade cutting assembly (72) includes a second cutting motor (721) and a blade cutting long blade (722) fixed to the output end of the second cutting motor (721); the second cutting motor (721) is fixed to the front side of the conveyor box (31) by a second cutting mounting bracket (723); the blade cutting long blade (722) is parallel to the blade comb plate (71) and corresponds to the blade slot (712).

7. A self-propelled pineapple harvester capable of pre-cutting pineapple leaves according to any one of claims 4-6, characterized in that: The conveying mechanism (3) is mounted on the vehicle body (1) via the lifting mechanism (8); an adjusting rod (35) is provided on the rear side of the conveying box (31); the lifting mechanism (8) includes a support rod (81) fixed on the vehicle body and a lifting rotating rod (82); the lifting rotating rod (82) is L-shaped, one end of the lifting rotating rod (82) is hinged to the top of the support rod (81), and the other end is hinged to the area near the front of the adjusting rod (35); the lifting mechanism (8) also includes a second hydraulic telescopic rod (83); the fixed end of the second hydraulic telescopic rod (83) is hinged to the support rod (81), and the telescopic end of the second hydraulic telescopic rod (83) is hinged to the area near the adjusting rod (35) of the lifting rotating rod (82); the lifting mechanism (8) also includes a third hydraulic telescopic rod (84); the fixed end of the third hydraulic telescopic rod (84) is hinged to the lifting rotating rod (82), and the telescopic end of the third hydraulic telescopic rod (84) is hinged to the area near the rear of the adjusting rod (35).

8. A self-propelled pineapple harvester capable of pre-cutting pineapple leaves according to claim 1, characterized in that: The lifting mechanism (4) is inclined with a lower front and a higher rear, having a horizontal section at the front and an inclined section at the rear of the horizontal section; the lifting mechanism (4) includes two lifting mounting frames (41) fixed to the vehicle body (1) and distributed on the left and right, a lifting drive shaft (42) and multiple lifting driven shafts (43) installed between the two lifting mounting frames (41), and a lifting conveyor belt (44) wound around the lifting drive shaft (42) and multiple lifting driven shafts (43); multiple partitions (45) are evenly fixed along the length of the lifting conveyor belt (44) to prevent pineapple fruits from slipping off the inclined section of the lifting mechanism (4); a lifting motor (47) is also fixed on the vehicle body (1); the output end of the lifting motor (47) is connected to the lifting drive shaft (42) through a second chain sprocket transmission mechanism (48); baffles (46) are also fixed on the lifting mounting frame (41) on the front and left and right sides of the lifting conveyor belt.

9. A self-propelled pineapple harvester capable of pre-cutting pineapple leaves according to claim 1, characterized in that: The walking mechanism (12) is a tracked walking mechanism.

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