Harvester for picking and seeding melons

Abstract

The present application relates to the technical field of agricultural machinery, in particular to a melon picking, cutting and seed collecting combined harvester. The combined harvester comprises a front support assembly and a melon picking mechanism driven by the front support assembly to lift and lower, a melon picking mechanism is arranged on the side close to the cab of the melon cutting mechanism, a melon removing mechanism and a straw cutting mechanism are arranged above the melon picking mechanism, melons on the melon picking mechanism pass through the melon removing mechanism, a first melon conveying mechanism and a second melon conveying mechanism and then enter a stone preventing and melon cutting mechanism, a melon conveying and lifting auger is arranged between the stone preventing and melon cutting mechanism and the second melon conveying mechanism, a double drum threshing and cleaning mechanism is arranged on the side away from the cab of the melon conveying and lifting auger, a collecting box is arranged above the double drum threshing and cleaning mechanism, and the seeds removed by the double drum threshing and cleaning mechanism enter the collecting box through a vertical conveying auger. The present application realizes fast melon picking, cutting and seed collecting through cooperation between the parts, and can prevent stones during melon cutting and improve the service life of the melon cutting knife.

Description

Combined harvester for melon harvesting, threshing, and seed extraction Technical Field

[0001] This invention relates to the field of agricultural machinery technology, specifically to a combined harvester for harvesting, threshing, and extracting seeds from melons. Background Technology

[0002] Harvesting seed melons is a crucial step in the production process. In recent years, due to labor shortages and rising labor costs, the harvesting process has gradually shifted from manual to mechanized operations. Seed melon harvesters have been widely adopted in recent years. These machines can complete a series of combined operations, including picking up, transporting, flattening, chopping, and separating seed melons, significantly reducing labor intensity. However, during operation, seed melon harvesters have several issues, such as stones entering the chopping blades and causing blockages during transport.

[0003] In the prior art, there is an invention patent with application publication number CN111919600A, which discloses a seed melon harvester based on double-drum threshing. The crushing roller is horizontally mounted in the crushing box. The crushing roller is supported by fixed rotation, which cannot avoid the situation of stones hitting the blade. This increases the failure rate and affects the service life of the crushing structure.

[0004] In the existing technology, there is a utility model patent with authorization announcement number CN208783239U, which discloses a needle-type seed melon harvester. It discloses that the first auger in the bin and the second auger in the bottom drive bin shell cooperate to achieve the conveying. The conveying structure is simple and prone to accumulation failure, which affects the overall operation. Summary of the Invention

[0005] This invention provides a combined harvester for harvesting, breaking, and extracting seeds of melons, in order to solve the technical problems of low harvesting efficiency and the inability to avoid stones affecting the service life of the melon-breaking mechanism.

[0006] To solve the above problems, the combined harvester for melon harvesting, threshing, and seed extraction provided by this invention adopts the following technical solution:

[0007] The system includes a front support assembly and a melon-picking and harvesting mechanism driven by the front support assembly. The melon-picking and harvesting mechanism has a melon-collecting mechanism on the side closest to the driver's cab. Above the melon-collecting mechanism are a melon-removing mechanism and a vine-removing mechanism. The melons from the melon-collecting mechanism pass through the melon-removing mechanism, a first melon-conveying mechanism, and a second melon-conveying mechanism before entering an anti-stone-breaking mechanism. A melon-conveying lifting auger is located between the anti-stone-breaking mechanism and the second melon-conveying mechanism. A double-drum threshing and cleaning mechanism is connected to the side of the auger furthest from the driver's cab. A collection box is located above the double-drum threshing and cleaning mechanism. The seeds removed by the threshing and cleaning mechanism enter the collection box via a vertical conveying auger; the anti-stone-breaking mechanism includes a crushing box that tilts from front to back, with a baffle roller at the front end of the crushing box that is rotatably supported by the box body, and a floating fruit-breaking cutter roller at the rear of the baffle roller that is rotatably supported by the box body. Floating springs are provided at both ends of the floating fruit-breaking cutter roller, and side support plates are provided on the inner walls of both sides of the crushing box. The top of the floating spring is fixedly connected to the side support plate, and the two ends of the floating fruit-breaking cutter roller extend out of the crushing box and are fitted with vertical sliding guide components between the two ends and the outer walls of both sides of the crushing box.

[0008] By adopting the above technical solution, the design of the retaining roller and the floating crushing roller can effectively achieve the function of preventing stones from entering the crushing box and affecting the service life of the cutter on the floating crushing roller.

[0009] Furthermore, the vertical sliding guide assembly includes two sets of guide rails disposed on the outer surface of the side wall of the crushing box. Each set of guide rails includes two rails arranged at intervals, and a guide groove is formed between the two rails. A vertical slide plate is provided in the guide groove, and the seated bearing for rotating and supporting the floating crushing roller is fixed on the vertical slide plate.

[0010] Furthermore, the crushing box is supported by a box body bracket, and the two ends of the box body bracket are provided with limiting end plates that cooperate with the vertical sliding plate. The upper end surface of the limiting end plate is provided with a buffer spring column, and the outer side of the vertical sliding plate is provided with a side limiting plate that is spaced apart from the limiting end plate. The upper limit block fixed to the side wall of the crushing box is provided above the guide slide groove.

[0011] By adopting the above technical solution, the stability of the floating melon-crushing roller is effectively improved by the vertical sliding guide component, ensuring the overall stability. In addition, the buffer spring column and the floating spring work together to play a floating buffering role.

[0012] Furthermore, the melon-picking and harvesting mechanism includes a seed-throwing shaft that is rotatably supported by a front support assembly. The seed-throwing shaft is provided with multiple sets of seed-throwing paddles distributed along the axial direction of the seed-throwing shaft, and one set of seed-throwing paddles has a scraper at its end.

[0013] Using the above technical solution, the vine-throwing shaft rotates, which drives the vine-throwing paddle on it to rotate. As the vine-throwing paddle rotates, it throws the vines off the melons, thereby realizing the melon-picking operation.

[0014] A baffle is fixedly installed on the front support assembly above the rice-throwing shaft. The end of the front support assembly away from the rice-throwing shaft is hinged to the frame assembly. A hydraulic telescopic rod is hinged between the bottom end of the front support assembly and the frame assembly.

[0015] By adopting the above technical solution, the front end of the front support assembly is lifted by the action of the hydraulic telescopic rod, so as to achieve normal movement when not in operation.

[0016] Furthermore, the melon-collecting mechanism includes a thorny roller and thorns fixed on the thorny roller, and the thorny roller is rotatably supported on the front support assembly by bearings;

[0017] The melon-collecting mechanism is provided with a melon-collecting roller at its rear lower side. The melon-collecting roller is rotatably supported by a connecting frame, and the end of the connecting frame away from the melon-collecting roller is hinged to the front support assembly.

[0018] Using the above technical solution, melons in the field are harvested by piercing them with thorns, and then the melons stuck to the thorns are removed by a melon-removing mechanism. The melon-harvesting roller can push the melons forward during the harvesting process.

[0019] Furthermore, the fruit removal mechanism includes a fruit removal roller, on which are spaced-apart annular plates and fruit removal pins perpendicular to the axial direction of the fruit removal roller.

[0020] The rear side of the fruit-removing roller is provided with a secondary fruit-removing plate, and the secondary fruit-removing plate is provided with several arc-shaped plates distributed at intervals, the arc-shaped plates being located in the gap formed between two adjacent annular plates.

[0021] Using the above technical solution, the melons stuck to the thorns are removed by the melon-removing pin. In addition, while the melons are being removed by the melon-removing pin, the melons may become stuck in the pin. At this time, the melons are removed by rotating the melon-removing roller and by the action of the arc plate.

[0022] Furthermore, the seedling removal mechanism includes a seedling-pulling shaft, a seedling-pulling plate axially disposed on the surface of the seedling-pulling shaft, a seedling-cleaning assembly disposed on the side of the seedling-pulling shaft away from the secondary de-melon plate, the seedling-cleaning assembly including a conveyor chain parallel to the axial direction of the seedling-pulling shaft, seedling-cleaning forks fixed on the chain links of the conveyor chain, a bottom plate disposed below the conveyor chain, an inclined guide plate disposed on the side of the bottom plate near the seedling-pulling shaft; a first protective cover with a closed bottom surface is disposed at one end of the conveyor chain, and a second protective cover with a bottom surface communicating with the outside is disposed at the other end of the conveyor chain.

[0023] By adopting the above technical solution, the weeds and vines on the melon thorns can be collected and discharged in a timely and effective manner through the vine-removing mechanism. On the one hand, this allows the equipment to operate normally for a long time, and on the other hand, it prevents the juice of the weeds and vines from staining the melon seeds.

[0024] Furthermore, the first melon conveying mechanism includes a central rotating shaft, on which are arranged annular fixing plates at intervals. A support shaft is provided on the outer circumference of the central rotating shaft, and the support shaft is supported and fixed by the annular fixing plates. The second melon conveying mechanism includes a bidirectional melon conveying auger, on which a melon-pulling plate is fixed to the auger shaft between two spiral blades with different spiral directions. The melon-pulling plate is correspondingly located at the bottom inlet of the melon conveying lifting auger, and the bottom shell of the melon conveying lifting auger is provided with drainage holes.

[0025] Using the above technical solution, the melons removed from the thorns are transported to the melon-lifting auger by the first and second melon-conveying mechanisms. In addition, the cooperation of the first and second melon-conveying mechanisms increases the melon-conveying space, avoiding the melons from accumulating at the bottom of the melon-lifting auger and causing congestion during centralized transportation, which would affect normal transportation.

[0026] Furthermore, the double-drum threshing and cleaning mechanism includes two screen cylinders arranged in parallel. The bottom end of the screen cylinder is connected to a seed collection bin, and the seed collection bin is equipped with a transverse conveying auger that transports the seeds to a vertical conveying auger. The front section of the screen cylinder is equipped with a feed inlet and the rear end is open to the outside. The lower half of the screen cylinder is a seed screening device, and the screen cylinder is equipped with a melon threshing rubber-coated auger.

[0027] The rear end of the sieve cylinder is equipped with a melon rind output mechanism.

[0028] By adopting the above technical solution, the peeling and seed extraction operation can be quickly realized, that is, the melon peel can be returned to the field and the seeds can be collected in a concentrated manner.

[0029] Furthermore, a frame for supporting the collection box is provided above the double-drum threshing and cleaning mechanism. The bottom end of the collection box away from the vertical conveying auger is hinged to the frame, and a telescopic rod is hinged between the side of the collection box and the frame.

[0030] Using the above technical solution, after collecting the grains in the collection box, the collection box is tilted by the action of the telescopic rod, so as to pour out the grains in the collection box for centralized storage and transportation.

[0031] The beneficial effects of the combined harvester for melon harvesting, threshing, and seed extraction provided by this invention are as follows: This invention achieves rapid melon harvesting, threshing, and seed extraction through the cooperation of various parts. In particular, the vertical sliding guide component effectively improves the stability of the floating melon-breaking roller, ensuring overall stability. In addition, the buffer spring column and floating spring work together to provide a floating buffer. Furthermore, the melon conveying mechanism, in conjunction with the melon conveying lifting auger, has a low failure rate and high melon conveying efficiency. The use of the melon conveying lifting auger instead of the chain rake effectively increases the conveying speed and lifting capacity, prevents entanglement, and reduces the failure rate. Attached Figure Description

[0032] The above and other objects, features, and advantages of exemplary embodiments of the present invention will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of the invention are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0033] Figure 1 is one of the structural schematic diagrams of the combined harvester for melon harvesting, melon threshing, and seed extraction of the present invention;

[0034] Figure 2 is a magnified view of a portion of region A in Figure 1;

[0035] Figure 3 is a schematic diagram of the floating melon-crushing roller in this invention;

[0036] Figure 4 is a partial structural schematic diagram of the combined harvester for melon harvesting, melon threshing, and seed extraction of the present invention.

[0037] Figure 5 is a magnified view of region B in Figure 4;

[0038] Figure 6 is a magnified view of region C in Figure 4;

[0039] Figure 7 is a second schematic diagram of the combined harvester for melon harvesting, melon threshing, and seed extraction of the present invention.

[0040] Figure 8 is a magnified view of region D in Figure 7;

[0041] Figure 9 is a schematic diagram of the melon-lifting auger in this invention;

[0042] Figure 10 is a schematic diagram of the double-drum threshing and cleaning mechanism in this invention;

[0043] Figure 11 is a schematic diagram of the auger with rubber coating for threshing melon pieces in this invention;

[0044] Figure 12 is a third structural schematic diagram of the combined harvester for melon harvesting, melon threshing, and seed extraction of the present invention.

[0045] Figure 13 is a schematic diagram of the feeding auger mechanism in this invention;

[0046] Figure 14 is a schematic diagram of the melon rind output auger in this invention.

[0047] Explanation of reference numerals in the attached figures:

[0048] 1. Watermelon harvesting mechanism; 11. Rice seedling throwing shaft; 12. Rice seedling throwing paddle; 121. Scraper; 14. Watermelon collecting roller; 141. Connecting frame;

[0049] 2. Front bracket assembly; 21. Baffle; 22. Hydraulic telescopic rod;

[0050] 3. Melon-collecting mechanism; 31. Melon-prickly roller; 32. Melon-piercing thorns;

[0051] 4. Fruit removal mechanism; 41. Fruit removal roller; 42. Circular plate; 43. Fruit removal pin; 44. Secondary fruit removal plate; 45. Arc-shaped plate;

[0052] 5. Seedling removal mechanism; 51. Seedling-pulling shaft; 52. Seedling-pulling plate; 53. Seedling cleaning assembly; 531. Conveyor chain; 532. Seedling cleaning fork; 54. Base plate; 541. Inclined guide plate; 55. First protective cover;

[0053] 56. Second protective shield;

[0054] 6. First melon conveying mechanism; 61. Central rotating shaft; 62. Annular fixed plate; 63. Support shaft;

[0055] 7. Second melon conveying mechanism; 71. Two-way melon conveying auger; 72. Melon-pulling plate;

[0056] 8. Anti-stone crushing mechanism; 80. Baffle roller; 81. Crushing box; 82. Floating crushing roller; 83. Floating spring; 84. Box support; 841. Limiting end plate; 842. Buffer spring column;

[0057] 9. Screw conveyor for melons; 91. Lifting conveyor cylinder; 92. Screw conveyor shaft; 93. Inspection cover;

[0058] 10. Double-drum threshing and cleaning mechanism; 101. Screening cylinder; 102. Seed collection bin; 103. Horizontal conveying auger; 104. Seed screening screen; 105. Peel outlet; 106. Peel output auger; 1061. Connecting parts; 1062. Feed hopper;

[0059] 11. Collection box; 111. Frame; 112. Telescopic pole;

[0060] 12. Vertical conveying auger;

[0061] 13. Guide assembly; 131. Guide rail; 132. Guide groove; 133. Vertical slide plate; 1331. Side limiting plate; 134. Upper limit block;

[0062] 14. Melon collecting roller; 141. Connecting frame;

[0063] 15. Feeding auger mechanism; 151. Auger conveyor body; 152. Feeding port; 153. Discharge port; 154. Mounting plate. Detailed Implementation

[0064] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0065] The number of any elements in the accompanying drawings is for illustrative purposes only and not as a limitation, and any naming is for distinction only and has no limiting meaning.

[0066] The principles and spirit of the present invention will be explained in detail below with reference to several representative embodiments.

[0067] Example 1 of the combined harvester for melon harvesting, threshing, and seed extraction provided by this invention:

[0068] As shown in Figures 1 to 14

[0069] The system includes a front support assembly 2 and a melon-picking and harvesting mechanism 1 driven by the front support assembly 2. A melon-collecting mechanism 3 is located on the side of the melon-collecting mechanism 1 closest to the driver's cab. Above the melon-collecting mechanism 3 are a melon-removing mechanism 4 and a vine-removing mechanism 5. The melons on the melon-collecting mechanism 3 pass through the melon-removing mechanism 4, and then through a first melon-conveying mechanism 6 and a second melon-conveying mechanism 7 before entering an anti-stone-breaking melon-mechanism 8. A melon-conveying lifting auger 9 is located between the anti-stone-breaking melon-mechanism 8 and the second melon-conveying mechanism 7. A double-drum threshing and cleaning mechanism 10 is connected to the side of the auger 9 furthest from the driver's cab. A collection box 11 is located above the double-drum threshing and cleaning mechanism 10. The removed seeds enter the collection box 11 through the vertical conveying auger 12; the anti-stone crushing mechanism 8 includes a crushing box 81 that tilts from front to back. The front end of the crushing box 81 is provided with a baffle roller 80 that is rotatably supported by the box body of the crushing box 81. Behind the baffle roller 80 is a floating crushing cutter roller 82 that is rotatably supported by the box body of the crushing box 81. The two ends of the floating crushing cutter roller 82 are provided with floating springs 83. The inner walls on both sides of the crushing box 81 are provided with side support plates. The top of the floating springs 83 is fixedly connected to the side support plates. The two ends of the floating crushing cutter roller 82 extend out of the crushing box 81 and are provided with vertical sliding guide components 13 that cooperate with the outer walls on both sides of the crushing box 81.

[0070] In this embodiment, the design of the baffle roller 80 and the floating crushing roller 82 can effectively prevent stones from entering the crushing box 81 and affecting the service life of the cutter on the floating crushing roller 82.

[0071] The inclined design of the crushing box 81 allows the melons conveyed by the melon lifting auger 9 to pass through the crushing mechanism and enter the double-drum threshing and cleaning mechanism 10 under their own gravity.

[0072] The distance between the baffle roller 80 and the bottom plate of the crushing box 81 is small, and there is a small gap between the blades on the floating crushing roller 82 pointing towards the bottom plate of the crushing box 81 and the bottom plate of the crushing box 81. The stones that are conveyed into the crushing box 81 by the stone conveying lifting auger 9 are small in size and large in volume. The stones roll from above the baffle roller 80 into the floating crushing roller 82 for crushing. Small stones are blocked outside the baffle roller 80. When some stones enter the floating crushing roller 82, they will float up when they come into contact with the stones during the rotation of the cutter, due to the action of the floating spring 83, so as to avoid jamming the floating crushing roller 82 or damaging the blades.

[0073] The upper surface of the crushing box 81 is equipped with a hinged, openable cover plate, which enables cleaning and maintenance of the crushing box 81.

[0074] The bottom surface of the crushing box 81 is provided with a through hole, so that the juice produced during the crushing process can be discharged directly.

[0075] In this embodiment, the vertical sliding guide assembly 13 includes two sets of guide rails 131 disposed on the outer surface of the side wall of the crushing box 81. Each set of guide rails 131 includes two rails arranged at intervals, and a guide groove 132 is formed between the two guide rails 131. A vertical slide plate 133 is provided in the guide groove 132, and the seated bearing for rotating and supporting the floating crushing roller 82 is fixed on the vertical slide plate 133.

[0076] In this embodiment, the crushing box 81 is supported by a box bracket 84. The two ends of the box bracket 84 are provided with limiting end plates 841 that cooperate with the vertical slide plate 133. The upper end surface of the limiting end plate 841 is provided with a buffer spring column 842. The outer side of the vertical slide plate 133 is provided with a side limiting plate 1331 that is spaced opposite to the limiting end plate 841. The upper limit block 134 fixed to the side wall of the crushing box 81 is provided above the guide slide groove 132.

[0077] In this embodiment, the vertical sliding guide component 13 effectively improves the floating stability of the floating melon-crushing roller 82 and ensures the overall stability. In addition, the buffer spring column 842 and the floating spring 83 work together to play a floating buffering role.

[0078] In this embodiment, the melon-picking and harvesting mechanism 1 includes a vine-throwing shaft 11 rotatably supported by a front support assembly 2. The vine-throwing shaft 11 is equipped with multiple sets of vine-throwing paddles 12 distributed axially along the shaft. One set of vine-throwing paddles 12 has a scraper block 121 at its end. The rotation of the vine-throwing shaft 11 drives the vine-throwing paddles 12 to rotate, simultaneously throwing the vines off the melons to achieve the melon-picking operation. Specifically, the vine-throwing paddles 12 are rubber strips, ensuring that they break up weeds and melon vines without damaging the melons during harvesting.

[0079] A baffle 21 is fixedly provided on the front support assembly 2 above the rice-throwing shaft 11. The end of the front support assembly 2 away from the rice-throwing shaft 11 is hinged to the frame assembly. A hydraulic telescopic rod 22 is hinged between the bottom end of the front support assembly 2 and the frame assembly.

[0080] Specifically, the hydraulic telescopic rod 22 is used to lift the front end of the front support assembly 2, enabling normal movement when not in operation.

[0081] In this embodiment, the melon harvesting mechanism 3 includes a thorny roller 31 and thorns 32 fixed on the thorny roller 31. Only a part of the thorns 32 is shown in the figure. The thorny roller 31 is rotatably supported on the front bracket assembly 2 by bearings.

[0082] The melon-collecting mechanism 3 is provided with a melon-collecting roller 14 at the lower rear side. The melon-collecting roller 14 is rotatably supported by a connecting frame 141, and the end of the connecting frame 141 away from the melon-collecting roller 14 is hinged to the front support assembly 2.

[0083] Specifically, the melons in the field are harvested by using the melon-piercing thorns 32, and then the melons stuck to the thorns are removed by the melon-removing mechanism 4. The melon-harvesting roller 14 can push the melons forward during the harvesting process.

[0084] In this embodiment, the fruit removal mechanism 4 includes a fruit removal roller 41, on which are spaced-apart annular plates 42, and on which are fruit removal pins 43 perpendicular to the axial direction of the fruit removal roller 41; a secondary fruit removal plate 44 is provided on the rear side of the fruit removal roller 41, and on which are spaced-apart arc-shaped plates 45, which are located in the gap formed between two adjacent annular plates 42.

[0085] Specifically, the melon is removed from the thorns 32 by the melon removal pin 43. In addition, while the melon is being removed by the melon removal pin 43, the melon may be stuck on the melon removal pin 43. At this time, the melon is removed by the rotation of the melon removal roller 41 and the action of the arc plate 45.

[0086] In this embodiment, the seedling removal mechanism 5 includes a seedling-pulling shaft 51, a seedling-pulling plate 52 axially arranged on the surface of the seedling-pulling shaft 51, a seedling-cleaning assembly 53 arranged on the side of the seedling-pulling shaft 51 away from the secondary de-melon plate 44, the seedling-cleaning assembly 53 including a conveyor chain 531 parallel to the axial direction of the seedling-pulling shaft 51, a seedling-cleaning fork 532 fixed on the chain links of the conveyor chain 531, a base plate 54 arranged below the conveyor chain 531, an inclined guide plate 541 arranged on the side of the base plate 54 near the seedling-pulling shaft 51; a first protective cover 55 with a closed bottom surface is provided at one end of the conveyor chain 531, and a second protective cover 56 with a bottom surface communicating with the outside is provided at the other end of the conveyor chain 531.

[0087] The vine-removing mechanism 5 can effectively and promptly collect and remove weeds and melon vines from the thorns 32, allowing the equipment to operate normally for a long time and preventing the juice from the weeds and vines from staining the melon seeds.

[0088] In this embodiment, the first melon conveying mechanism 6 includes a central rotating shaft 61, on which annular fixing plates 62 are arranged at intervals, and a support shaft 63 is provided on the outer periphery of the central rotating shaft 61, and the support shaft 63 is supported and fixed by the annular fixing plates 62.

[0089] The second melon conveying mechanism 7 includes a bidirectional melon conveying auger 71. A melon-pulling plate 72 fixed on the auger shaft is provided between two spiral blades with different spiral directions on the bidirectional melon conveying auger 71. The melon-pulling plate 72 is correspondingly provided at the bottom inlet of the melon conveying lifting auger 9. A drainage hole is provided on the bottom shell of the melon conveying lifting auger 9.

[0090] The melons removed from the thorns 32 are transported to the melon lifting auger 9 by the first melon conveying mechanism 6 and the second melon conveying mechanism 7. In addition, the cooperation of the first melon conveying mechanism 6 and the second melon conveying mechanism 7 increases the melon conveying space, so as to avoid the melons from accumulating at the bottom of the melon lifting auger and causing congestion during centralized conveying, which would affect normal conveying.

[0091] Specifically, the melon conveying lifting auger 9 includes an inclined lifting conveying cylinder 91 with an angle α of 60° between the lifting conveying cylinder 91 and the horizontal plane. The top lower side of the lifting conveying cylinder 91 is provided with a melon outlet and the lower upper side is provided with a melon inlet. The lifting conveying cylinder 91 is rotatably supported by an auger conveying shaft 92.

[0092] The melons removed from the thorns 32 are transported to the melon lifting auger 9 via the first melon conveying mechanism 6 and the second melon conveying mechanism 7, and then transported to the anti-stone-breaking melon mechanism 8 via the auger conveying shaft 92.

[0093] The bottom shell of the lifting conveyor cylinder 91 is equipped with a drainage hole. During the process of conveying melons by the melon lifting auger 9, some melons may be damaged and juice may leak out. The drainage hole can help drain the juice. The shell of the lifting conveyor cylinder 91 is also equipped with a maintenance cover 93 for easy maintenance. In actual use, this facilitates the maintenance and repair of the internal structure of the lifting conveyor cylinder 91.

[0094] The use of a auger 9 to lift melons instead of a chain rake effectively increases the conveying speed and lifts a large amount, while preventing tangling.

[0095] In this embodiment, the double-drum threshing and cleaning mechanism 10 includes two sieve cylinders 101 arranged side by side. The bottom end of each sieve cylinder 101 is connected to a seed collection bin 102. The seed collection bin 102 contains a transverse conveying auger 103 that transports the seeds to a vertical conveying auger 12. The front section of each sieve cylinder 101 has a feed inlet and the rear section is open to the outside. The lower half of each sieve cylinder 101 is a seed sieve 104. The sieve cylinder 101 contains a melon hull threshing auger with attached rubber skin, and the rear end of each sieve cylinder 101 contains a melon hull output mechanism.

[0096] The sieve cylinder 101 has a feed inlet at the front end and a watermelon rind outlet 105 at the rear end. The watermelon rind output mechanism includes a watermelon rind output auger 106. The bottom end of the watermelon rind output auger 106 has a feed hopper 1062. The feed hopper 1062 is connected to the watermelon rind outlet 105 via a flange. The watermelon rind output auger 106 has a connector 1061 for connecting the watermelon rind output auger 106 to the frame.

[0097] The above structure enables rapid peeling and seed extraction, allowing for quick and centralized collection of melon peels and seeds.

[0098] The auger with rubber-coated hull for threshing melon rinds is an existing structure, with the front section being a rubber-coated spiral winch and the rear section being a rubber-coated segmented paddle crushing auger. The rubber coating surfaces are located on the pushing surfaces of the spiral winch and the segmented paddle crushing auger, respectively. Both pushing surfaces face the open end of the melon rind outlet, i.e., towards the rear of the frame. The crushed melon rinds after threshing are discharged from the melon rind outlet 105 and enter the melon rind output auger 106 through the feed hopper 1062, and are then output to the transport vehicle through the melon rind output auger 106, thus achieving centralized recycling and transportation of the melon rinds.

[0099] In this embodiment, a frame 111 for supporting the collection box 11 is provided above the double-drum threshing and cleaning mechanism 10. The bottom end of the collection box 11 away from the vertical conveying auger 12 is hinged to the frame 111. A telescopic rod 112 is hinged between the side of the collection box 11 and the frame 111.

[0100] After the seeds are collected in the collection box 11, the collection box 11 is tilted by the telescopic rod 112 so that the seeds in the collection box 11 can be poured out for centralized collection and transportation.

[0101] In this embodiment, a feeding auger mechanism 15 is provided on the side of the crushing box 81 on one side of the anti-stone-breaking melon mechanism 8. The feeding auger mechanism 15 includes an auger conveyor body 151. The bottom side of the auger conveyor body 151 is provided with a feeding port 152 for easy feeding of leftover melon bodies. The top side of the auger conveyor body 151 is provided with a discharge port 153 that communicates with the inside of the crushing box 81. The inner side of the auger conveyor body 151 is provided with a mounting plate 154 that is the same as that installed on the vehicle body.

[0102] The feeding auger mechanism 15 enables manual assistance to transport the remaining melons into the crushing box 81, thereby improving the overall efficiency of melon harvesting and seed extraction.

[0103] When the combined harvester for melon harvesting, threshing, and seed extraction in this embodiment is operating as a whole, the melon picking mechanism 1 first removes weeds and vines to pick the melons. Then, the melon collection mechanism 3, during its movement, uses melon-piercing spikes 32 to pierce the melons. The melon collection roller 14 can push the melons forward during the collection process to avoid leaving any melons behind. Subsequently, the melon removal mechanism 4 removes the melons from the spikes, and the vine removal mechanism 5 removes the vines. The melons removed from the spikes 32 are quickly transported to the anti-stone-breaking melon mechanism 8 through the first melon conveying mechanism 6, the second melon conveying mechanism 7, and the melon lifting auger 9. Finally, the melons are quickly peeled and seeded by the double-drum threshing and cleaning mechanism 10, which quickly returns the melon peels to the field and collects the seeds. Finally, the seeds are transported to the collection box 11 to complete the harvest.

[0104] Based on the above description in this specification, those skilled in the art will also understand that the following terms, such as "upper," "lower," "front," "rear," "left," "right," "width," "horizontal," "top," "bottom," "inner," and "outer," which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0105] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A combined harvester for harvesting, threshing, and extracting seeds of melons, characterized in that: The system includes a front support assembly and a melon-picking and harvesting mechanism driven by the front support assembly. The melon-picking and harvesting mechanism has a melon-collecting mechanism on the side closest to the driver's cab. Above the melon-collecting mechanism are a melon-removing mechanism and a vine-removing mechanism. The melons on the melon-collecting mechanism pass through the melon-removing mechanism, then through a first melon-conveying mechanism and a second melon-conveying mechanism before entering an anti-stone-breaking mechanism. A melon-conveying lifting auger is located between the anti-stone-breaking mechanism and the second melon-conveying mechanism. A double-drum threshing and cleaning mechanism is connected to the side of the auger furthest from the driver's cab. A collection box is located above the double-drum threshing and cleaning mechanism. Seeds removed by the double-drum threshing and cleaning mechanism enter the collection box via a vertical conveying auger. The anti-stone-breaking mechanism includes a crushing box that tilts from front to back. The front end of the crushing box is equipped with a... The crushing box has a rotating support roller for the box body. Behind the support roller is a floating fruit-crushing roller that is rotated and supported by the crushing box body. The floating fruit-crushing roller has floating springs at both ends. The inner walls of both sides of the crushing box have side support plates. The top of the floating spring is fixedly connected to the side support plate. The two ends of the floating fruit-crushing roller extend out of the crushing box and are fitted with vertical sliding guide components between the two ends and the outer walls of both sides of the crushing box. The fruit-removing mechanism includes a fruit-removing roller. The fruit-removing roller has annular plates distributed at intervals. The annular plates have fruit-removing pins perpendicular to the axis of the fruit-removing roller. The rear side of the fruit-removing roller has a secondary fruit-removing plate. The secondary fruit-removing plate has multiple arc-shaped plates distributed at intervals. The arc-shaped plates are located in the gaps formed between two adjacent annular plates.

2. The combined harvester for harvesting, threshing, and extracting seeds of melons according to claim 1, characterized in that, The vertical sliding guide assembly includes two sets of guide rails on the outer surface of the side wall of the crushing box. Each set of guide rails includes two rails arranged at intervals, and a guide groove is formed between the two rails. A vertical slide plate is provided in the guide groove, and the seated bearing for rotating and supporting the floating crushing roller is fixed on the vertical slide plate.

3. The combined harvester for harvesting, threshing, and extracting seeds of melons according to claim 2, characterized in that, The crushing box is supported by a box body bracket. The two ends of the box body bracket are provided with limiting end plates that cooperate with the vertical sliding plate. The upper end face of the limiting end plate is provided with a buffer spring column. The outer side of the vertical sliding plate is provided with a side limiting plate that is spaced away from the limiting end plate. The upper limit block fixed to the side wall of the crushing box is provided above the guide slide groove.

4. The combined harvester for harvesting, threshing, and extracting seeds of melons according to claim 1, characterized in that, The melon-picking and harvesting mechanism includes a seed-throwing shaft that is rotatably supported by a front support assembly. The seed-throwing shaft is provided with multiple sets of seed-throwing paddles distributed along the axial direction of the seed-throwing shaft, and one set of seed-throwing paddles has a scraper at its end. A baffle is fixedly provided on the front support assembly above the seed-throwing shaft. The end of the front support assembly away from the seed-throwing shaft is hinged to the frame assembly. A hydraulic telescopic rod is hinged between the bottom end of the front support assembly and the frame assembly.

5. The combined harvester for harvesting, threshing, and extracting seeds of melons according to claim 4, characterized in that, The melon-collecting mechanism includes a thorny roller and thorns fixed on the thorny roller. The thorny roller is rotatably supported on the front support assembly by bearings. A melon-collecting roller is provided on the lower rear side of the melon-collecting mechanism. The melon-collecting roller is rotatably supported by a connecting frame, and the end of the connecting frame away from the melon-collecting roller is hinged to the front support assembly.

6. The combined harvester for harvesting, threshing, and extracting seeds of melons according to claim 5, characterized in that, The seedling removal mechanism includes a seedling-pulling shaft with a seedling-pulling plate axially mounted on its surface. A seedling-cleaning assembly is located on the side of the seedling-pulling shaft away from the secondary de-melon plate. The seedling-cleaning assembly includes a conveyor chain parallel to the axial direction of the seedling-pulling shaft. A seedling-cleaning fork is fixed on the chain links of the conveyor chain. A bottom plate is located below the conveyor chain, and an inclined guide plate is located on the side of the bottom plate near the seedling-pulling shaft. A first protective cover with a closed bottom surface is located at one end of the conveyor chain, and a second protective cover with a bottom surface communicating with the outside is located at the other end of the conveyor chain.

7. The combined harvester for harvesting, threshing, and extracting seeds of melons according to claim 1, characterized in that, The first melon conveying mechanism includes a central rotating shaft with annular fixed plates arranged at intervals on it. A support shaft is provided on the outer circumference of the central rotating shaft, and the support shaft is supported and fixed by the annular fixed plates. The second melon conveying mechanism includes a bidirectional melon conveying auger. A melon-pulling plate fixed to the auger shaft is provided between two spiral blades with different spiral directions on the bidirectional melon conveying auger. The melon-pulling plate is located at the bottom inlet of the melon conveying auger. The bottom shell of the melon conveying auger is provided with drainage holes.

8. The combined harvester for harvesting, threshing, and extracting seeds of melons according to claim 1, characterized in that, The double-drum threshing and cleaning mechanism includes two screen cylinders arranged side by side. The bottom end of each screen cylinder is connected to a seed collection bin, which contains a transverse conveying auger that transports the seeds to a vertical conveying auger. The front section of each screen cylinder has a feed inlet and the rear end is open to the outside. The lower half of the screen cylinder is a seed sieve, and the screen cylinder contains a melon hull threshing auger with attached rubber skin. The rear end of the screen cylinder has a melon hull output mechanism.

9. The combined harvester for harvesting, threshing, and extracting seeds of melons according to claim 8, characterized in that, The double-drum threshing and cleaning mechanism is provided with a frame above it for supporting the collection box. The bottom end of the collection box away from the vertical conveying auger is hinged to the frame, and a telescopic rod is hinged between the side of the collection box and the frame.

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