Corn harvester

Abstract

The invention relates to the technical field of agricultural harvesting machinery, in particular to a corn harvester which comprises a vehicle body system, a gap bridge system and a harvesting header system. The harvesting header system comprises a first harvesting header module and a second harvesting header module which are detachably connected with the gap bridge system, and each of the first harvesting header module and the second harvesting header module comprises a harvesting header unit; the number of the harvesting header units in the first harvesting header module is smaller than that of the harvesting header units in the second harvesting header module, and the length of the first harvesting header module is equal to that of the second harvesting header module in the arrangement direction of the harvesting header units. The invention aims to provide a corn harvester aiming at at least one technical problem related in the background technology.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural harvesting machinery, and in particular to a corn harvester. Background Art

[0002] Corn is a food crop with a large planting area. It is used as food, feed, industrial raw materials, etc., and occupies an important position in my country's agricultural production. With the adjustment of the planting industry structure, the corn market has shifted from the past food demand to the diversified demand of fresh food, feed, silage and processing industry. This has prompted the transformation of corn production from ordinary yield to high-level special quality; from simple food production to comprehensive production combining planting, breeding and processing; therefore, the development of special corn is a concrete manifestation of modern agriculture; seed corn is a high-value crop, and in order to ensure the quality of seeds, the seed ear breakage rate must be strictly controlled;

[0003] At present, seed corn mainly relies on manual harvesting. One of the main reasons why mechanical harvesting has not been widely used is that the agronomy of seed production is complex and special. The male and female parents are sown in separate rows, and the planting factors such as the row spacing between the two are different, which is not conducive to mechanized harvesting. This has hindered the development of full mechanization of seed corn production. Summary of the invention

[0004] The purpose of the present application is to provide a corn harvester in view of at least one technical problem involved in the background technology.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] The present application provides a corn harvester, including a vehicle main body system, a bridge system and a harvesting header system, wherein the bridge system is installed on the vehicle main body system, and the harvesting header system includes a first harvesting header module and a second harvesting header module, both of which are used to be detachably connected to the bridge system, the first harvesting header module and the second harvesting header module both include harvesting header units, the number of the harvesting header units in the first harvesting header module is less than the number of the harvesting header units in the first harvesting header module, and the length of the first harvesting header module in the arrangement direction of each of the harvesting header units is equal to the length of the second harvesting header module.

[0007] Optionally, the bridge system includes a bridge shell, a bridge active roller, a harvesting platform connecting assembly, a bridge conveyor belt and a bridge passive roller. The bridge shell is installed on the vehicle main body system, the bridge active roller and the bridge passive roller are both installed on the bridge shell, one end of the bridge conveyor belt is sleeved on the bridge active roller, and the other end of the bridge conveyor belt is sleeved on the bridge passive roller, the bridge conveyor belt gradually extends upward from the bridge passive roller to the bridge active roller, the harvesting platform connecting assembly is installed on the bridge shell, the harvesting platform connecting assembly is arranged close to the bridge passive roller, and the first harvesting platform module and the second harvesting platform module are both used for detachable connection with the harvesting platform connecting assembly.

[0008] The beneficial effects of this technical solution are: the active bridge roller and the passive bridge roller are installed on the bridge shell, the bridge conveyor belt is wound around the active bridge roller and the passive bridge roller, the active bridge roller rotates driven by the hydraulic motor, and the bridge conveyor belt sends the corn ears, broken stalks, stems and leaves and other impurities sent by the harvesting table system to the first lifting system. The main function of the harvesting table connection assembly is to quickly replace different types of harvesting table modules so as to adapt to the harvesting needs of different plots or different types of planting patterns.

[0009] Optionally, the corn harvester provided in the embodiment of the present application also includes a first lifting system, which includes a first lifting shell, a first lifting and transporting module and a grass pulling module, the first lifting shell is installed on the vehicle main body system, the first lifting and transporting module is installed on the first lifting shell, the first lifting module is used to receive materials delivered by the bridge system, the grass pulling module is located above the first lifting and transporting module, and the grass pulling module is arranged near the discharge end of the bridge system.

[0010] The beneficial effect of this technical solution is that: in this way, the materials harvested by the harvesting header system (including corn, as well as impurities such as stalks and plant stems and leaves) are sent to the bridge system and further sent to the first lifting system. Before the materials are sent to the first lifting and transporting module, the impurities such as stalks and plant stems and leaves in the materials are first extracted by the pulling module, so that the proportion of corn in the material is larger, reducing the impurity content in the corn.

[0011] Optionally, the first lifting conveying module includes a first lifting conveying belt, and a first lifting active roller and a first lifting passive roller both installed on the first lifting shell, one end of the first lifting conveying belt is mounted on the first lifting active roller, and the other end of the first lifting conveying belt is mounted on the first lifting passive roller, the first lifting passive roller is located below the bridge active roller, and the first lifting active roller is located above the bridge active roller, and the first lifting conveying belt extends obliquely from the first lifting passive roller to the first lifting active roller.

[0012] The beneficial effects of this technical solution are: the first lifting active roller, the first lifting passive roller and the straw pulling module are installed on the first lifting shell, the first lifting conveyor belt is wrapped around the first lifting active roller and the first lifting passive roller, the first lifting active roller and the straw pulling module rotate under the drive of the hydraulic motor, and the first lifting conveyor belt transports impurities such as fruit ears, broken stems, stems and leaves sent by the bridge system to the second lifting system.

[0013] Optionally, the grass pulling module includes a grass pulling roller driving component and two grass pulling rollers arranged parallel to each other, the grass pulling roller driving component is used to drive the two grass pulling rollers to rotate in opposite directions, and a grass passing gap is formed between the two grass pulling rollers. The tangents of the two grass pulling rollers at the grass passing gap are parallel to the inclination direction of the bridge conveyor belt.

[0014] The beneficial effect of this technical solution is that when the bridge conveyor belt transports the material to a position close to the grass pulling module, the tops of impurities such as stems and plant stems and leaves are generally higher and will touch the position of the grass pulling module. These impurities extend into the grass gap, and the two grass pulling rollers will squeeze and stretch these impurities, extracting the grass from the material, thereby increasing the proportion of corn in the material. In the embodiment of the present application, the grass pulling roller drive is preferably a hydraulic motor.

[0015] Optionally, the corn harvester provided in the embodiment of the present application further includes a fan system, which is fixed to the vehicle main body system. The fan system includes a first fan module, which is located above the grass pulling module. A first air inlet is formed on the first fan module, and the first air inlet faces the grass pulling module.

[0016] The beneficial effect of this technical solution is that: in this way, the first fan module can suck impurities such as stalks and plant stems and leaves extracted from the material by the grass pulling module into the first fan module, thereby completing the process of discharging impurities other than corn from the material.

[0017] Optionally, the first fan module includes a first turbine shell, and a first wheel shaft, a first impeller and a first grass cutter, all of which are located in the first turbine shell. The first impeller is installed on the first wheel shaft, and the first air inlet, the first grass cutter and the first impeller are arranged in sequence from bottom to top.

[0018] The beneficial effect of this technical solution is that: in this way, impurities such as stems and plant stems and leaves enter the first air inlet under the suction effect generated by the rotation of the first impeller, and are chopped by the first grass cutting knife and then discharged from the fan system.

[0019] Optionally, the corn harvester provided in the embodiment of the present application further includes a second lifting system, wherein the second lifting system is used to receive materials delivered by the first lifting system, and the fan system further includes a second fan module, wherein the second fan module is located above the second lifting system, and a second air inlet is formed on the second fan module, and the second air inlet is arranged toward the second lifting system.

[0020] The beneficial effect of this technical solution is that: in this way, the first lifting system sends the ears mixed with small stems and leaves that have not been cleaned off to the second lifting system. During this process, these small stems and leaves are sucked out by the second fan module, further reducing the impurities in the corn ears.

[0021] Optionally, the second fan module includes a second turbine shell, and a second wheel shaft, a second impeller and a second grass cutter, all of which are located in the second turbine shell, the second impeller is installed on the second wheel shaft, and the second air inlet, the second grass cutter and the second impeller are arranged in sequence from bottom to top.

[0022] The beneficial effect of this technical solution is that: in this way, impurities such as small stems and leaves that have not been cleaned up enter the second air inlet under the suction effect generated by the rotation of the second impeller, and are chopped by the second grass cutting knife and then discharged from the fan system.

[0023] Optionally, the corn harvester provided in the embodiment of the present application further includes a grain collecting box system, which includes a box body, a grain box rotating shaft, a lifting guide column, a lifting guide rail, a lifting cylinder and a tilting cylinder, the lifting guide rail is fixed to the vehicle main body system, the lifting guide column is installed on the lifting guide rail, the lifting guide column and the lifting guide rail are slidingly matched in the length direction of the lifting guide rail, the lifting cylinder is arranged parallel to the lifting guide rail, one end of the lifting cylinder is fixed to the vehicle main body system, and the other end of the lifting cylinder is fixed to the lifting guide column, the box body is fixed to the top of the lifting guide column through the grain box rotating shaft, the length direction of the tilting cylinder is inclined relative to the lifting guide rail, one end of the tilting cylinder is pivoted to the lifting guide column, and the other end of the tilting cylinder is pivoted to the box body.

[0024] The technical solution provided by this application can achieve at least one of the following beneficial effects:

[0025] The corn harvester provided in the present application makes the harvesting header system have a first harvesting header module and a second harvesting header module including different numbers of harvesting header units. Since the length of the first harvesting header module is the same as the length of the second harvesting header module, the spacing between each harvesting header unit in the first harvesting header module is different from the spacing between each harvesting header unit in the second harvesting header module. In this way, the first harvesting header module and the second harvesting header module can be respectively suitable for the harvesting of corn with different planting row spacings, thereby facilitating the separate harvesting of seed corn male and female parents, thereby improving the mechanization degree of seed corn harvesting.

[0026] The additional technical features and advantages of the present application will be more clearly explained in the following description, or can be understood through the specific practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the specific implementation methods of the present application, the following is a brief introduction to the drawings required for the description of the specific implementation methods. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A schematic structural diagram of an implementation of a corn harvester provided in an embodiment of the present application;

[0029] Figure 2 A schematic diagram of the structure of an implementation scheme of a bridge system provided in an embodiment of the present application;

[0030] Figure 3 A partial structural schematic diagram of an implementation manner of a corn harvester provided in an embodiment of the present application;

[0031] Figure 4 A schematic diagram of the structure of an implementation method of the first lifting system provided in an embodiment of the present application;

[0032] Figure 5 A schematic structural diagram of an implementation scheme of a fan system provided in an embodiment of the present application;

[0033] Figure 6 A schematic diagram of the structure of an implementation method of a second lifting system provided in an embodiment of the present application;

[0034] Figure 7 A structural schematic diagram of a state of an implementation method of a grain collection box system provided in an embodiment of the present application;

[0035] Figure 8 A structural schematic diagram of another state of an implementation of the grain collection box system provided in an embodiment of the present application;

[0036] Fig. 9 A schematic structural diagram of an implementation of a first harvesting header module provided in an embodiment of the present application;

[0037] Fig.10 A schematic structural diagram of an implementation of a second harvesting header module provided in an embodiment of the present application;

[0038] Fig.11 A schematic diagram of a top view of a harvesting header unit according to an embodiment of the present application;

[0039] Fig.12 A schematic diagram of the main structure of an implementation manner of a harvesting header unit provided in an embodiment of the present application;

[0040] Fig.13 A schematic diagram of the main structure of another implementation of the harvesting header unit provided in an embodiment of the present application;

[0041] Fig.14 A schematic structural diagram of an implementation scheme of a reed chain provided in an embodiment of the present application.

[0042] Reference numerals:

[0043] 01. Harvesting header system; 02. Cab and operating system;

[0044] 03. Bridge system; 04. Front drive system;

[0045] 05. The first fan module; 06. The first lifting system;

[0046] 07. The second fan module; 08. The second lifting system;

[0047] 09. Chassis system; 10. Power system;

[0048] 11. Rear steering system; 12. Grain collection box system;

[0049] 13. Bridge passive roller; 14. Harvesting header connection assembly;

[0050] 15. Bridge conveyor belt; 16. Bridge shell;

[0051] 17. Bridge driving roller; 18. First lifting shell;

[0052] 19. First lifting passive roller; 20. Grass pulling roller;

[0053] 21. First lifting conveyor belt; 22. First lifting active roller;

[0054] 23. First wheel axle; 24. First bearing seat;

[0055] 25. First safety clutch; 26. Second wheel shaft;

[0056] 27. Second bearing seat; 28. Second safety clutch;

[0057] 29. Fan mounting bracket; 30. First turbine housing;

[0058] 31. First air inlet; 32. First grass cutting knife;

[0059] 33. first impeller; 34. second turbine housing;

[0060] 35. Second air inlet; 36. Second grass cutting knife;

[0061] 37. The second impeller; 38. The second lifting passive roller;

[0062] 39. Second lifting conveyor belt; 40. Second lifting housing;

[0063] 41. Second lifting connection frame; 42. Second lifting active roller;

[0064] 43. Grain tank shaft; 44. Lifting guide column;

[0065] 45. Lifting guide rail; 46. Lifting cylinder;

[0066] 48. Box body; 49. Turning cylinder;

[0067] 50. Grain-pulling chain; 51. Ear-pulling board;

[0068] 52. Picking ear support; 53. Stem pulling roller;

[0069] 54. Transmission box; 55. Belt body;

[0070] 56. shifting gear; 57. transmission gear;

[0071] 58. A first harvesting header module; 59. A second harvesting header module;

[0072] 60. Harvesting header unit; 61. Pin plate on the harvesting header body;

[0073] 62. Pin shaft on the bridge; 63. Pin shaft under the harvesting platform;

[0074] 64. Connecting plate shaft; 65. Adjusting rod;

[0075] 66. Connecting plate. DETAILED DESCRIPTION

[0076] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0077] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0078] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0079] like Figures 1 to 14 As shown, the present application provides a corn harvester, including a vehicle body system, a bridge system 03 and a harvesting header system 01, wherein the bridge system 03 is installed on the vehicle body system, and the harvesting header system 01 includes a first harvesting header module 58 and a second harvesting header module 59, both of which are used to be detachably connected to the bridge system 03, and the first harvesting header module 58 and the second harvesting header module 59 both include harvesting header units 60, and the number of the harvesting header units 60 in the first harvesting header module 58 is less than the number of the harvesting header units 60 in the first harvesting header module 58, and the length of the first harvesting header module 58 in the arrangement direction of each of the harvesting header units 60 is equal to the length of the second harvesting header module 59.

[0080] In the embodiment of the present application, the vehicle main system preferably includes a cab and control system 02, a front drive system 04, a chassis system 09, a power system 10 and a rear steering system 11.

[0081] The corn harvester provided in the present application enables the harvesting header system 01 to have a first harvesting header module 58 and a second harvesting header module 59 including different numbers of harvesting header units 60. Since the length of the first harvesting header module 58 is the same as the length of the second harvesting header module 59, the spacing between each harvesting header unit 60 in the first harvesting header module 58 is different from the spacing between each harvesting header unit 60 in the second harvesting header module 59. In this way, the first harvesting header module 58 and the second harvesting header module 59 can be respectively suitable for corn harvesting with different planting row spacings, thereby facilitating the separate harvesting of seed corn male and female parents, thereby improving the mechanization degree of seed corn harvesting.

[0082] Optionally, the bridge system 03 includes a bridge shell 16, a bridge active roller 17, a harvesting platform connecting assembly 14, a bridge conveyor belt 15 and a bridge passive roller 13. The bridge shell 16 is installed on the vehicle main body system, the bridge active roller 17 and the bridge passive roller 13 are both installed on the bridge shell 16, one end of the bridge conveyor belt 15 is sleeved on the bridge active roller 17, and the other end of the bridge conveyor belt 15 is sleeved on the bridge passive roller 13, the bridge conveyor belt 15 gradually extends upward from the bridge passive roller 13 to the bridge active roller 17, the harvesting platform connecting assembly 14 is installed on the bridge shell 16, the harvesting platform connecting assembly 14 is arranged close to the bridge passive roller 13, and the first harvesting platform module 58 and the second harvesting platform module 59 are both used for detachable connection with the harvesting platform connecting assembly 14. The active bridge roller 17 and the passive bridge roller 13 are installed on the bridge shell 16, and the bridge conveyor belt 15 is wound around the active bridge roller 17 and the passive bridge roller 13. The active bridge roller 17 rotates driven by the hydraulic motor, and the bridge conveyor belt 15 sends the corn ears, broken stalks, stems and leaves and other impurities sent by the harvesting platform system 01 to the first lifting system. The main function of the harvesting platform connecting assembly 14 is to quickly replace different types of harvesting platform modules so as to adapt to the harvesting needs of different plots or different types of planting patterns.

[0083] like Figure 3As shown, in the embodiment of the present application, preferably, a header module is provided with a header body pin plate 61 on the top, a connecting hole is provided on the header body pin plate 61, and a bridge upper pin shaft 62 is provided on the top of the bridge housing 16. When the header module is installed on the bridge housing 16, the header body pin plate 61 is fixed to the bridge upper pin shaft 62 through the connecting hole, thereby realizing the connection between the top of the header module and the bridge system 03; the harvesting header connection assembly 14 includes a connecting plate 66 and a connecting plate rotating shaft 64, and the connecting plate 66 is pivotally connected to the bottom of the bridge housing 16 through the connecting plate rotating shaft 64, and the connecting plate 66 is V-shaped, and one end of the connecting plate 66 close to the bridge passive roller 13 is shaped A connecting groove is formed, and a limiting groove is formed at the end of the connecting plate 66 away from the passive bridge roller 13. A lower pin shaft 63 of the harvesting platform body is formed near the bottom of the harvesting platform module. The connecting groove is used to be engaged with the lower pin shaft 63 of the harvesting platform body, thereby realizing the connection between the bottom end of the harvesting platform module and the bridge system 03. A slide groove extending in the vertical direction is provided on the bridge shell 16. The adjusting rod 65 is arranged in the slide groove and slides with the slide groove in the vertical direction. The bottom end of the adjusting rod 65 is used to be engaged with the limiting groove, so as to limit the connecting plate 66 after the connecting groove is engaged with the lower pin shaft 63 of the harvesting platform body, so that the connection between the top of the harvesting platform module and the bridge system 03 is not easy to fail. When it is necessary to replace the first harvesting platform module 58 and the second harvesting platform module 59, move the adjusting rod 65 upward along the slide groove to separate the adjusting rod 65 from the limiting groove, rotate the connecting plate 66 to separate the connecting groove from the pin shaft 63 under the harvesting platform body, lift the harvesting platform module upward to separate the pin plate 61 on the harvesting platform body from the pin shaft 62 on the bridge, transfer the harvesting platform module to the storage place, and install another harvesting platform module on the bridge system 03.

[0084] Optionally, the corn harvester provided in the embodiment of the present application further includes a first lifting system 06, which includes a first lifting shell 18, a first lifting and transporting module and a grass pulling module. The first lifting shell 18 is installed on the vehicle main body system, and the first lifting and transporting module is installed on the first lifting shell 18. The first lifting module is used to receive materials sent by the bridge system 03. The grass pulling module is located above the first lifting and transporting module, and the grass pulling module is arranged near the discharge end of the bridge system 03. In this way, the materials harvested by the harvesting header system 01 (including corn, and impurities such as stalks and plant stems and leaves) are sent to the bridge system 03 and further sent to the first lifting system 06. Before the materials are sent to the first lifting and transporting module, the impurities such as stalks and plant stems and leaves in the materials are first extracted by the grass pulling module, so that the proportion of corn in the materials is larger and the impurity content in the corn is reduced.

[0085] Optionally, the first lifting conveying module includes a first lifting conveying belt 21, and a first lifting active roller 22 and a first lifting passive roller 19 both of which are installed on the first lifting shell 18, one end of the first lifting conveying belt 21 is mounted on the first lifting active roller 22, and the other end of the first lifting conveying belt 21 is mounted on the first lifting passive roller 19, the first lifting passive roller 19 is located below the bridge active roller 17, and the first lifting active roller 22 is located above the bridge active roller 17, and the first lifting conveying belt 21 extends obliquely from the first lifting passive roller 19 to the first lifting active roller 22. The first lifting active roller 22, the first lifting passive roller 19 and the straw pulling module are installed on the first lifting shell 18, and the first lifting conveyor belt 21 is wound around the first lifting active roller 22 and the first lifting passive roller 19. The first lifting active roller 22 and the straw pulling module rotate under the drive of the hydraulic motor, and the first lifting conveyor belt conveys impurities such as fruit ears, broken stems, stems and leaves sent by the bridge system 03 to the second lifting system 08.

[0086] Optionally, the grass pulling module includes a grass pulling roller driving member and two grass pulling rollers 20 arranged parallel to each other, the grass pulling roller driving member is used to drive the two grass pulling rollers 20 to rotate in opposite directions, and a grass passing gap is formed between the two grass pulling rollers 20, and the tangents of the two grass pulling rollers 20 at the grass passing gap are parallel to the inclination direction of the bridge conveyor belt 15. In this way, when the bridge conveyor belt 15 transports the material to a position close to the grass pulling module, since the top positions of impurities such as stalks and plant stems and leaves are generally higher, they will touch the position of the grass pulling module, and these impurities will extend into the grass passing gap. The two grass pulling rollers 20 will squeeze and stretch these impurities, extract the grass from the material, and thereby increase the proportion of corn in the material. In the embodiment of the present application, the grass pulling roller driving member is preferably a hydraulic motor.

[0087] Optionally, the corn harvester provided in the embodiment of the present application further includes a fan system, the fan system is fixed to the vehicle main body system, the fan system includes a first fan module 05, the first fan module 05 is located above the grass pulling module, a first air inlet 31 is formed on the first fan module 05, and the first air inlet 31 faces the grass pulling module. In this way, the first fan module 05 can suck the impurities such as stalks and plant stems and leaves extracted from the material by the grass pulling module into the first fan module 05, thereby completing the process of discharging impurities other than corn from the material.

[0088] Optionally, the first fan module 05 includes a first turbine shell 30, and a first axle 23, a first impeller 33 and a first grass cutter 32 all located in the first turbine shell 30, the first impeller 33 is mounted on the first axle 23, and the first air inlet 31, the first grass cutter 32 and the first impeller 33 are arranged in sequence from bottom to top. In this way, impurities such as stems and plant stems and leaves enter the first air inlet 31 under the suction effect generated by the rotation of the first impeller 33, and are chopped by the first grass cutter 32 and then discharged from the fan system. In the embodiment of the present application, the first fan module 05 also includes a first bearing seat 24 and a first safety clutch 25.

[0089] Optionally, the corn harvester provided in the embodiment of the present application further includes a second lifting system 08, the second lifting system 08 is used to receive the materials sent by the first lifting system 06, and the fan system further includes a second fan module 07, the second fan module 07 is located above the second lifting system 08, a second air inlet 35 is formed on the second fan module 07, and the second air inlet 35 is arranged toward the second lifting system 08. In this way, the first lifting system 06 sends the ears mixed with small stems and leaves that have not been cleaned up to the second lifting system, and in this process these small stems and leaves are sucked out by the second fan module 07, further reducing the impurities in the corn ears.

[0090] In the embodiment of the present application, the second lifting system 08 preferably includes a second lifting shell 40 and a second lifting conveying module, the second lifting conveying module includes a second lifting conveying belt 39, and a second lifting active roller 42 and a second lifting passive roller 38 both installed on the second lifting shell 40, one end of the second lifting conveying belt 39 is sleeved on the second lifting active roller 42, and the other end of the second conveying belt is sleeved on the second lifting passive roller 38, the second lifting passive roller 38 is located below the first lifting active roller 22, the second lifting active roller 42 is located above the grain collection box system, and the second lifting conveying belt 39 extends obliquely from the second lifting passive roller 38 to the second lifting active roller 42. The second lifting system 08 preferably also includes a second lifting connecting frame 41.

[0091] Optionally, the second fan module 07 includes a second turbine shell 34, and a second axle 26, a second impeller 37 and a second grass cutter 36 all located in the second turbine shell 34, the second impeller 37 is mounted on the second axle 26, and the second air inlet 35, the second grass cutter 36 and the second impeller 37 are arranged in sequence from bottom to top. In this way, impurities such as small stems and leaves that have not been cleaned up enter the second air inlet 35 under the suction effect generated by the rotation of the second impeller 37, and are chopped by the second grass cutter 36 and then discharged from the fan system. In the embodiment of the present application, the fan system also includes a fan mounting bracket 29, the fan mounting bracket 29 is mounted on the vehicle body system, and the first fan module 05 and the second fan module 07 are both mounted on the fan mounting bracket 29. The second fan module 07 preferably also includes a second bearing seat 27 and a second safety clutch 28.

[0092] like Figure 7 and Figure 8 As shown, optionally, the corn harvester provided in the embodiment of the present application further includes a grain collection box system 12, wherein the grain collection box system 12 includes a box body 48, a grain box shaft 43, a lifting guide column 44, a lifting guide rail 45, a lifting cylinder 46 and a flip cylinder 49, wherein the lifting guide rail 45 is fixed to the vehicle main body system, the lifting guide column 44 is installed on the lifting guide rail 45, and the lifting guide column 44 and the lifting guide rail 45 are slidably matched in the length direction of the lifting guide rail 45, and the lifting cylinder 46 is provided with a lifting cylinder 49. 46 is arranged parallel to the lifting guide rail 45, one end of the lifting cylinder 46 is fixed to the vehicle main body system, the other end of the lifting cylinder 46 is fixed to the lifting guide column 44, the box body 48 is fixed to the top of the lifting guide column 44 through the grain box rotating shaft 43, the length direction of the flipping cylinder 49 is inclined relative to the lifting guide rail 45, one end of the flipping cylinder 49 is pivoted to the lifting guide column 44, and the other end of the flipping cylinder 49 is pivoted to the box body 48. In the embodiment of the present application, preferably, the lifting guide rail 45 is installed on the vehicle main body system by bolts, the lifting guide column 44 and the box body 48 are hinged through the grain box shaft 43, the lower end of the lifting cylinder 46 is hinged to the vehicle main body system, and the upper end is hinged to the lifting guide column 44, the upper end of the flip cylinder 49 is hinged to the box body 48, and the lower end is hinged to the lifting guide column 44, the lifting guide column 44 slides in the lifting guide rail 45 through the contraction and extension of the lifting cylinder 46, thereby pushing the box body 48 to rise and fall, and the flip cylinder 49 is used to control the rotation of the box body 48 around the grain box shaft 43, and is used to dump the ears in the grain collection box;

[0093] like Figure 7As shown, during normal harvesting operation, when the ears of fruit delivered by the second conveyor belt 39 fill the box 48, the cylinder rod of the lifting cylinder 46 extends, driving the lifting guide column 44 to slide in the lifting guide rail 45, thereby lifting the box 48. After the lifting cylinder 46 is fully extended, the cylinder rod of the flip cylinder 49 extends, driving the box 48 to rotate around the grain box shaft 43. During this process, the ears of fruit in the box 48 are slowly poured out to the grain transport vehicle. After the flip cylinder 49 is fully extended, the state is as shown in FIG. Figure 8 As shown; when the ears in the box 48 are dumped, the turning cylinder 49 is retracted. During this process, the box 48 rotates in the opposite direction around the grain box shaft 43. After the turning cylinder 49 is completely retracted, the lifting cylinder 46 begins to retract, and the lifting guide column 44 slides back in the lifting guide rail 45, driving the box 48 to fall back to its original position, and finally returns to the normal harvesting operation state, as shown in FIG. Figure 7 , thus completing a cycle of ear dumping, and subsequent continuous harvesting operations are repeated in this cycle.

[0094] At present, the mechanization level of fresh corn cob harvesters is low. In addition, the moisture content of fresh corn grains is relatively high during the harvest period, and the cobs are severely broken during existing mechanical operations. Therefore, the requirements for mechanical devices are relatively stringent. After harvesting, the impurities such as stalks, plant stems and leaves are high, and the cleanliness of the cobs is poor, which affects the subsequent deep processing of fresh corn.

[0095] The corn harvester provided in the embodiment of the present application can reduce impurities such as stalks and plant stems and leaves in corn, improve the cleanliness of the ears, and reduce the adverse effects on subsequent deep processing of fresh corn.

[0096] In the embodiment of the present application, preferably, Figures 9 to 13 As shown, in order to adapt to the different corn planting patterns, the first harvesting header module 58 is designed to have 6 rows and a row spacing of 650 mm, and the second harvesting header module 59 is designed to have 8 rows and a row spacing of 500 mm, that is, the first harvesting header module 58 includes 6 harvesting header units 60, and the distance between adjacent harvesting header units 60 is 650 mm, and the second harvesting header module 59 includes 8 harvesting header units 60, and the distance between adjacent harvesting header units 60 is 500 mm. The harvesting header unit 60 preferably includes two straw chains 50, two ear picking plates 51, two ear picking brackets 52, two stem pulling rollers 53 and a transmission box 54. When the corn harvester is in operation, the corn stalks are moved from the front end to the rear end through the gap between the two stem pulling rollers 53. At the same time, the stem pulling rollers 53 rotate to pull the corn stalks to one side of the ground. After the corn stalks are cut off by the stem pulling rollers 53, the ears are broken on the ear picking plates 51 and sent to the rear side of the harvesting header by the straw chain 50, and then sent to the bridge system. The corn harvester provided in the embodiment of the present application optimizes the straw chain 50 and the stem pulling roller 53 of the harvesting header unit 60. The straw chain 50 is made of rubber and consists of a belt body 55, a pulling tooth 56 and a transmission tooth 57. Fig.14As shown, the pull teeth 56 are located on the outside of the belt body 55, and the part of the pull teeth 56 that contacts the corn cob is made of flexible material. The transmission teeth 57 are located on the inside of the belt body 55, and the transmission teeth 57 include a first tooth and a second tooth arranged side by side, so that the transmission is more stable; the maximum outer circle contours of the two stem pulling rollers 53 arranged in pairs are tangent and the working surface edges are staggered. Fig.12 and Fig.13 As shown, the gripping force when picking corn ears will not be too large, thus preventing the corn ears from being bumped or scratched on the picking board 51. At the same time, the rubber-made rice-pulling chain 50 also has a protective effect on the transmission of the ears.

[0097] In this way, the corn harvester provided in the embodiment of the present application can reduce the breakage of fresh corn ears, thereby reducing the adverse effects on the subsequent deep processing of fresh corn. The corn harvester provided in the present application can harvest both seed corn and fresh corn. The corn harvester provided in the embodiment of the present application also has the following advantages:

[0098] The corn harvester adopts a harvesting header with different row spacings. The header reed chain 50 is made of rubber and consists of a belt body 55, a reed tooth 56 and a transmission tooth 57. Two stem pulling rollers 53 are arranged in pairs, and the maximum outer circle contours are tangent and the working surface edges are arranged staggered with each other. The gripping force when picking corn ears will not be too large, and the bumps and scratches of corn ears on the reed picking plate 51 are avoided. The rubber reed chain 50 also has a protective effect on the transmission of the ears. The optimization of technical means is conducive to protecting the ears intact to the greatest extent during the harvesting operation.

[0099] The connection between the harvesting header system 01 and the bridge system 03 of the corn harvester can be quickly replaced. By replacing headers with different row spacings, corn with different planting patterns can be harvested. On the other hand, after the harvesting header is attached, the whole vehicle is too long and its passability is reduced. The rapid disassembly of the harvesting header is conducive to improving the transfer passability and road passability after the harvesting operation is completed, thereby improving the general adaptability of this model, which is of great significance to the promotion of this model.

[0100] The bridge system 03, the first lifting system 06, and the second lifting system 08 all use rubber conveyor belts to reduce damage during corn transportation. The conveyor belt scraper height and spacing are optimized to adapt to the vehicle's operating speed and corn transportation volume, avoiding blockage during transportation.

[0101] In order to ensure a low impurity content in the ears, the corn harvester provided in the embodiment of the present application adopts a dual-fan impurity removal method. The first fan module 05 removes impurities for the first time and then removes impurities through the second fan module 07. The two fan impurity removals ensure the cleanliness of the ears in the ear collection box.

[0102] Grain transport trucks for small corn-growing fields are generally small, and a grain unloading height of about 3m can meet the demand. However, for large corn-growing fields, in order to ensure the transportation efficiency, large grain transport trucks usually adopt a heightened design, and the maximum fence height can reach 4.5m. The corn harvester grain collection box system 12 provided in the embodiment of the present application adopts a structural form of first lifting and then flipping to meet the higher grain unloading height, thereby improving the adaptability of this model.

[0103] The corn harvester provided in the embodiment of the present application adopts an advanced hydraulic and electrical control system, and the entire vehicle adopts hydraulic transmission, which is beneficial to reducing operating noise, reducing the complexity of the mechanical structure, and increasing smoothness. The control buttons are integrated into the cab, which improves the controllability of the entire vehicle, helps to reduce the labor intensity of the driver, and thus increases comfort.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A corn harvester, characterized in that: It includes a vehicle main body system, a bridge system and a harvesting header system, the bridge system is installed on the vehicle main body system, the harvesting header system includes a first harvesting header module and a second harvesting header module, both of which are used to be detachably connected to the bridge system, the first harvesting header module and the second harvesting header module both include harvesting header units, the number of the harvesting header units in the first harvesting header module is less than the number of the harvesting header units in the first harvesting header module, and the length of the first harvesting header module in the arrangement direction of each harvesting header unit is equal to the length of the second harvesting header module.

2. The corn harvester according to claim 1, characterized in that: The bridge system includes a bridge shell, a bridge active roller, a harvesting platform connecting assembly, a bridge conveyor belt and a bridge passive roller. The bridge shell is installed on the vehicle main body system, the bridge active roller and the bridge passive roller are both installed on the bridge shell, one end of the bridge conveyor belt is sleeved on the bridge active roller, and the other end of the bridge conveyor belt is sleeved on the bridge passive roller, and the bridge conveyor belt gradually extends upward from the bridge passive roller to the bridge active roller, the harvesting platform connecting assembly is installed on the bridge shell, the harvesting platform connecting assembly is arranged close to the bridge passive roller, and the first harvesting platform module and the second harvesting platform module are both used for detachable connection with the harvesting platform connecting assembly.

3. The corn harvester according to claim 2, characterized in that: It also includes a first lifting system, which includes a first lifting shell, a first lifting and conveying module and a straw pulling module. The first lifting shell is installed on the vehicle main body system, and the first lifting and conveying module is installed on the first lifting shell. The first lifting module is used to receive materials delivered by the bridge system. The straw pulling module is located above the first lifting and conveying module, and the straw pulling module is arranged near the discharge end of the bridge system.

4. The corn harvester according to claim 3, characterized in that: The first lifting conveying module includes a first lifting conveying belt, and a first lifting active roller and a first lifting passive roller both installed on the first lifting shell, one end of the first lifting conveying belt is sleeved on the first lifting active roller, and the other end of the first lifting conveying belt is sleeved on the first lifting passive roller, the first lifting passive roller is located below the bridge active roller, and the first lifting active roller is located above the bridge active roller, and the first lifting conveying belt extends obliquely from the first lifting passive roller to the first lifting active roller.

5. The corn harvester according to claim 3, characterized in that: The grass pulling module includes a grass pulling roller driving component and two grass pulling rollers arranged parallel to each other. The grass pulling roller driving component is used to drive the two grass pulling rollers to rotate in opposite directions. A grass passing gap is formed between the two grass pulling rollers. The tangents of the two grass pulling rollers at the grass passing gap are parallel to the inclination direction of the bridge conveyor belt.

6. The corn harvester according to claim 3, characterized in that: It also includes a fan system, which is fixed to the vehicle main body system. The fan system includes a first fan module, which is located above the grass-pulling module. A first air inlet is formed on the first fan module, and the first air inlet faces the grass-pulling module.

7. The corn harvester according to claim 6, characterized in that: The first fan module includes a first turbine shell, and a first wheel shaft, a first impeller and a first grass cutting blade all located in the first turbine shell. The first impeller is installed on the first wheel shaft, and the first air inlet, the first grass cutting blade and the first impeller are arranged in sequence from bottom to top.

8. The corn harvester according to claim 6, characterized in that: It also includes a second lifting system, which is used to receive materials delivered by the first lifting system. The fan system also includes a second fan module, which is located above the second lifting system. A second air inlet is formed on the second fan module, and the second air inlet is arranged toward the second lifting system.

9. The corn harvester according to claim 8, characterized in that: The second fan module includes a second turbine shell, and a second axle, a second impeller, and a second grass cutter, all of which are located in the second turbine shell. The second impeller is installed on the second axle, and the second air inlet, the second grass cutter, and the second impeller are arranged in sequence from bottom to top.

10. The corn harvester according to claim 8, characterized in that: It also includes a grain collection box system, which includes a box body, a grain box rotating shaft, a lifting guide column, a lifting guide rail, a lifting cylinder and a tilting cylinder. The lifting guide rail is fixed to the vehicle main system, the lifting guide column is installed on the lifting guide rail, and the lifting guide column and the lifting guide rail are slidably matched in the length direction of the lifting guide rail. The lifting cylinder is arranged parallel to the lifting guide rail, one end of the lifting cylinder is fixed to the vehicle main system, and the other end of the lifting cylinder is fixed to the lifting guide column. The box body is fixed to the top of the lifting guide column through the grain box rotating shaft, and the length direction of the tilting cylinder is inclined relative to the lifting guide rail. One end of the tilting cylinder is pivoted to the lifting guide column, and the other end of the tilting cylinder is pivoted to the box body.

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