Conveying system and fresh corn harvester

Abstract

The utility model discloses a conveying system and a fresh corn harvester, which comprise a primary elevator, a secondary elevator used for receiving materials on the primary elevator, a primary chopping device used for primarily chopping sundries on the primary elevator, and a cleaning fan used for further chopping the sundries processed by the primary chopping device, a preset distance is kept between the first-stage chopping device and the output end of the first-stage elevator, the cleaning fan comprises a shell and a second-stage chopping device arranged in the shell, and an air suction opening of the shell is formed in the upper portion of the first-stage chopping device; when the conveying system runs, the first-stage chopping device can preliminarily chop straw extending out of the first-stage elevator and chop the straw with large mass into multiple sections of straw with small mass, and negative pressure provided by the cleaning fan can suck all impurities away, so that the conveying system can be prevented from being blocked, the impurity rate of clusters is reduced, and the harvesting efficiency is improved; and a secondary chopping device in the cleaning fan is used for further chopping the primarily chopped sundries, so that the field returning effect of the sundries can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery technical field, especially, relate to a conveying system. In addition, the utility model also relates to a fresh corn harvester comprising the conveying system. BACKGROUND

[0002] With the increasingly advanced fresh corn harvester technology, the farmers pursue efficient harvesting while putting forward more stringent requirements for the cleanliness of the ear. In view of the difference of the regional operation environment of different varieties of corn machines, higher expectations are put forward for the impurity removal capacity of the corn harvester.

[0003] At present, the conveying system equipped by the domestic fresh corn harvester includes a conveying belt and a cleaning fan. The working principle of this kind of system is that the cleaning fan operates to generate negative pressure, the impurities are sucked into the air inlet of the cleaning fan, and then are discharged from the material channel along with the air force of the cleaning fan. However, when the impurities are straw with large mass, the negative pressure provided by the cleaning fan is difficult to suck them in, which will cause the blockage of the conveying system and affect the harvesting efficiency; in addition, the impurities discharged by the cleaning fan lack further treatment, and the effect of returning to the field still has a large space for improvement. SUMMARY

[0004] The utility model provides a kind of conveying system and fresh corn harvester, to solve the technical problem that the conveying system of prior art is difficult to handle large mass impurities, which will cause the blockage of conveying system, and the impurities discharged by cleaning fan lack further treatment.

[0005] According to one aspect of the utility model, a conveying system is provided, comprising a first elevator, a second elevator for receiving the material on the first elevator, a first cutting device for preliminarily cutting the impurities on the first elevator, and a cleaning fan for further cutting the impurities processed by the first cutting device. The first cutting device is kept at a predetermined distance from the output end of the first elevator. The cleaning fan includes a housing and a second cutting device arranged in the housing. The air inlet of the housing is arranged above the first cutting device.

[0006] Further, the first cutting device includes a grass pulling driving roller, a grass pulling driven roller cooperating with the grass pulling driving roller to cut the impurities, and a driving device for driving the grass pulling driving roller to rotate. The grass pulling driving roller is provided with a first gear. The grass pulling driven roller is provided with a second gear engaged with the first gear. The outer cylindrical surface of the grass pulling driving roller and the outer cylindrical surface of the grass pulling driven roller are respectively provided with grass pulling blades for preliminarily cutting the impurities.

[0007] Further, the pulling grass driving roller comprises a first hollow roller, first shaft heads arranged on both ends of the first hollow roller and first pulling grass blades arranged on the outer circumferential surface of the first hollow roller, and the first gear is sleeved on the first shaft head.

[0008] Further, the pulling grass passive roller comprises a second hollow roller, second shaft heads arranged on both ends of the second hollow roller and second pulling grass blades arranged on the outer circumferential surface of the second hollow roller, and the second gear is sleeved on the second shaft head.

[0009] Further, the first pulling grass blades are arranged on the outer circumferential surface of the first hollow roller at equal intervals, the second pulling grass blades are arranged on the outer circumferential surface of the second hollow roller at equal intervals and the number of the first pulling grass blades is the same as that of the second pulling grass blades.

[0010] Further, the driving device comprises a chain and a driver, wherein the chain is arranged around the first chain wheel, the second chain wheel and the third chain wheel.

[0011] Further, the driving device further comprises an idler wheel for tensioning the chain.

[0012] Further, the secondary chopping device comprises a transmission shaft arranged in rotation in the shell, an impeller arranged on the transmission shaft and a cutter arranged on the transmission shaft, and the cutter is arranged above the primary chopping device.

[0013] Further, the device further comprises a rear elevator for receiving the material on the secondary elevator and a granary for collecting the material on the rear elevator.

[0014] According to another aspect of the present application, a fresh corn harvester is also provided, which comprises the conveying system.

[0015] The present application has the following advantages:

[0016] The conveying system of the utility model, use, according to the fruit cluster size of the crop that is harvested adjusts the interval of first shredding device and first elevator output, guarantees that fruit cluster can smoothly fall from the clearance of first shredding device and first elevator output, due to the straw of larger quality, size is larger, when conveying system is in operation, first shredding device can preliminarily shred the straw that protrudes on first elevator, make the straw of larger quality change into the straw of smaller quality after shredding, and the negative pressure provided by cleaning fan can suck away all sundries, can avoid the blockage of conveying system, reduce the sundry rate of fruit cluster, improve harvesting efficiency, the sundries of preliminary shredding are further shredded by the second shredding device in cleaning fan, can improve the effect of returning sundries to field.

[0017] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The utility model will be further explained in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings that form a part of this application are intended to provide further understanding of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation on the utility model. In the drawings:

[0019] Figure 1 It is the structure schematic view of the conveying system of the preferred embodiment of the utility model;

[0020] Figure 2 It is the structure schematic view of the driving device of the preferred embodiment of the utility model;

[0021] Figure 3 It is the structure schematic view of the shredding device of the preferred embodiment of the utility model;

[0022] Figure 4 It is the structure schematic view of the first straw pulling blade of the preferred embodiment of the utility model;

[0023] Figure 5 It is the sectional view of the straw pulling driving roller of the preferred embodiment of the utility model;

[0024] Figure 6 It is the structure schematic view of the straw pulling driving roller of the preferred embodiment of the utility model;

[0025] Figure 7 It is the sectional view of the straw pulling driven roller of the preferred embodiment of the utility model;

[0026] Figure 8 It is the structure schematic view of the straw pulling driven roller of the preferred embodiment of the utility model;

[0027] Figure 9It is the structure schematic view of the cleaning fan of the preferred embodiment of the utility model.

[0028] Legend:

[0029] 1, primary elevator; 11, first sprocket; 2, secondary elevator; 21, second sprocket; 211, shaft coupling; 3, primary shredding device; 31, grass pulling driving roller; 311, first gear; 312, first hollow roller; 313, first shaft head; 314, first grass pulling blade; 315, third sprocket; 32, grass pulling driven roller; 321, second gear; 322, second hollow roller; 323, second shaft head; 324, second grass pulling blade; 4, cleaning fan; 41, impeller; 42, cutter; 43, shell; 44, transmission shaft; 5, rear elevator; 6, granary; 7, driving device; 71, chain; 72, idler; 8, second hydraulic motor; 9, third hydraulic motor. DETAILED DESCRIPTION

[0030] The embodiments of the utility model are described in detail below in combination with the drawings, but the utility model can be implemented in multiple different ways limited and covered by the following.

[0031] Please see Figures 1 to 9 The conveying system of the embodiment comprises a primary elevator 1, a secondary elevator 2 for receiving the material on the primary elevator 1, a primary shredding device 3 for preliminarily shredding the sundries on the primary elevator 1, and a cleaning fan 4 for further shredding the sundries processed by the primary shredding device 3. The primary shredding device 3 is kept at a preset interval from the output end of the primary elevator 1. The cleaning fan 4 comprises a shell 43 and a secondary shredding device arranged in the shell 43. The air suction port of the shell 43 is arranged above the primary shredding device 3.

[0032] When the conveying system is used, the interval between the primary shredding device 3 and the output end of the primary elevator 1 is adjusted according to the size of the fruiting branches of the harvested crops, so that the fruiting branches can smoothly fall from the gap between the primary shredding device 3 and the output end of the primary elevator 1. Since the straw with a large mass has a large size, the primary shredding device 3 can preliminarily shred the straw protruding from the primary elevator 1 when the conveying system is running, so that the straw with a large mass is converted into multiple pieces of straw with a small mass, thereby enabling the negative pressure provided by the cleaning fan 4 to completely suck away the sundries, avoiding the blockage of the conveying system, reducing the sundry rate of the fruiting branches, and improving the harvesting efficiency. The secondary shredding device in the cleaning fan 4 further shreds the preliminarily shredded sundries, which can improve the effect of returning the sundries to the field.

[0033] As Figure 2As shown, in this embodiment, the first-level shredding device 3 includes a grass pulling active roller 31, a grass pulling passive roller 32 that cooperates with the grass pulling active roller 31 to cut debris, and a driving device 7 for driving the grass pulling active roller 31 to rotate. The grass pulling active roller 31 is provided with a first gear 311, and the grass pulling passive roller 32 is provided with a second gear 321 that meshes with the first gear 311. Grass pulling blades for preliminarily cutting debris are respectively provided on the outer circumference of the grass pulling active roller 31 and the outer circumference of the grass pulling passive roller 32; the frame is provided with grass pulling active rollers 31 and 32 corresponding to the grass pulling active rollers The slide groove allows the active grass-pulling roller 31 and the passive grass-pulling roller 32 to adjust their positions along the corresponding slide groove. When the positions of the active grass-pulling roller 31 and the passive grass-pulling roller 32 are adjusted to the required positions, they are fixed by bolts. Since the second gear 321 is engaged with the first gear 311, when the driving device 7 drives the active grass-pulling roller 31 to rotate, the passive grass-pulling roller 32 will rotate synchronously in the opposite direction, so that the grass-pulling blades on the outer cylindrical surface of the active grass-pulling roller 31 and the outer cylindrical surface of the passive grass-pulling roller 32 can draw out debris and cut off the debris. It has a simple structure, stable operation, easy disassembly and assembly, and high maintenance efficiency.

[0034] like Figure 3 、 Figure 5 and Figure 6 As shown, in this embodiment, the grass pulling active roller 31 includes a first hollow roller 312, a first shaft head 313 arranged on both ends of the first hollow roller 312 and a first grass pulling blade 314 arranged on the outer cylindrical surface of the first hollow roller 312, and the first gear 311 is sleeved on the first shaft head 313; the first grass pulling blade 314 extends toward the outer cylindrical surface of the second hollow roller 322, and the first grass pulling blade 314 cooperates with the outer cylindrical surface of the second hollow roller 322 to cut off debris. The grass pulling active roller 31 adopts a split hollow structure, which can reduce the overall weight of the grass pulling active roller 31, thereby reducing energy consumption.

[0035] like Figure 3 、 Figure 7 and Figure 8 As shown, in this embodiment, the grass pulling passive roller 32 includes a second hollow roller 322, a second shaft head 323 arranged on both ends of the second hollow roller 322 and a second grass pulling blade 324 arranged on the outer cylindrical surface of the second hollow roller 322, and the second gear 321 is sleeved on the second shaft head 323; the second grass pulling blade 324 extends toward the outer cylindrical surface of the first hollow roller 312, and the second grass pulling blade 324 cooperates with the outer cylindrical surface of the first hollow roller 312 to cut off debris. The grass pulling passive roller 32 adopts a split hollow structure, which can reduce the overall weight of the grass pulling passive roller 32, thereby reducing energy consumption.

[0036] like Figure 4As shown, in the embodiment, the two first grass pulling blades 314 are evenly arranged on the outer surface of the first hollow roller 312, the second grass pulling blades 324 are the same in number as the first grass pulling blades 314 and are evenly arranged on the outer surface of the second hollow roller 322, so that the interval between the second grass pulling blades 324 and the first grass pulling blades 314 is 90°, and when the primary shredding device 3 is running, the grass pulling driving roller 31 can perform a shearing action once every 90° of rotation, so as to quickly extract the sundries in the fruit cluster and shred; it can be understood that the number of the second grass pulling blades 324 and the first grass pulling blades 314 can also be three, four or more, which is processed according to the use requirement.

[0037] As shown in Figure 2 and Figure 3 shown, in the embodiment, the first sprocket 11 is arranged on the driving roller of the primary elevator 1, the second sprocket 21 is arranged on the driving roller of the secondary elevator 2, and the third sprocket 315 is arranged on the grass pulling driving roller 31, and the driving device 7 comprises a chain 71 arranged on the first sprocket 11, the second sprocket 21 and the third sprocket 315, and a driver; the output shaft of the driver is connected to the second sprocket 21 through the shaft coupling 211, the primary elevator 1, the secondary elevator 2 and the primary shredding device 3 are driven by one driving device 7, which has a reasonable structure, can reduce the number of power devices, thereby reducing the cost and saving the space; it can be understood that the output shaft of the driver can also be connected to the third sprocket 315 or the first sprocket 11 through the shaft coupling 211, and the installation position of the driver is determined according to the space of the frame. Alternatively, the driver is a motor or a hydraulic motor, the conveying speed is steplessly adjustable, and it can adapt to different material conveying and sundry removal.

[0038] As shown in Figure 2 and Figure 3 shown, in the embodiment, the driving device 7 further comprises an idler 72 for tensioning the chain 71; a sliding groove is arranged on the frame, a rotating shaft is arranged in the sliding groove and is positioned at the adjusted position, and the idler 72 is arranged on the rotating shaft; by adjusting the position of the rotating shaft in the sliding groove, the tensioning degree of the chain 71 can be adjusted through the idler 72, so as to ensure that the chain 71 can run stably during the working process, and avoid the adverse phenomena such as excessive vibration, tooth skipping and chain disengagement.

[0039] As shown in Figure 1 and Figure 9As shown, in the embodiment, the secondary chopping device comprises a transmission shaft 44 arranged in rotation in the shell 43, an impeller 41 arranged on the transmission shaft 44, and a cutter 42 arranged on the transmission shaft 44, the cutter 42 is arranged above the primary chopping device 3, the transmission shaft 44 is driven by the second hydraulic motor 8 arranged on the shell 43, in operation, the second hydraulic motor 8 drives the impeller 41 and the cutter 42 to rotate through the transmission shaft 44, the impeller 41 rotates to form a negative pressure, and the preliminary chopped sundries of the primary chopping device 3 are sucked into the air inlet of the shell 43 upwards, the preliminary chopped sundries are further chopped by the cutter 42, and are discharged from the air outlet of the shell 43, the primary chopping device 3 and the secondary chopping device work cooperatively, so that the sundry rate of the ear is reduced, and the effect of returning the sundries to the field is improved.

[0040] As shown, Figure 1 In the embodiment, the rear elevator 5 for receiving the sundries on the secondary elevator 2 and the granary 6 for collecting the sundries on the rear elevator 5 are further included, the rear elevator 5 is driven by the third hydraulic motor 9, the ears after the cleaning treatment are transported to the rear elevator 5 from the secondary elevator 2, and the rear elevator 5 transports the received ears to the granary 6. Optionally, the cleaning fan 4 is arranged above the discharge end of the secondary elevator 2, the ears on the secondary elevator 2 can press some sundries, and the cleaning fan 4 above the discharge end of the secondary elevator 2 can suck away the sundries in the process that the ears fall from the discharge end of the secondary elevator 2 to the rear elevator 5, so that the cleaning effect is further improved, and the sundry rate of the ears is reduced.

[0041] A fresh corn harvester comprises the conveying system.

[0042] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and various modifications and changes can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A conveying system, characterized in that: The invention comprises a first-stage elevator (1), a second-stage elevator (2) for receiving materials on the first-stage elevator (1), a first-stage shredding device (3) for preliminarily shredding debris on the first-stage elevator (1), and a cleaning fan (4) for further shredding debris processed by the first-stage shredding device (3), wherein the first-stage shredding device (3) maintains a preset distance from the output end of the first-stage elevator (1), and the cleaning fan (4) comprises a shell (43) and a second-stage shredding device arranged in the shell (43), and the air intake of the shell (43) is arranged above the first-stage shredding device (3).

2. The conveying system according to claim 1, characterized in that The primary shredding device (3) comprises an active grass-pulling roller (31), a passive grass-pulling roller (32) cooperating with the active grass-pulling roller (31) to shred debris, and a driving device (7) for driving the active grass-pulling roller (31) to rotate. The active grass-pulling roller (31) is provided with a first gear (311), the passive grass-pulling roller (32) is provided with a second gear (321) meshing with the first gear (311), and grass-pulling blades for preliminarily shredding debris are respectively provided on the outer circumference of the active grass-pulling roller (31) and the outer circumference of the passive grass-pulling roller (32).

3. The conveying system according to claim 2, characterized in that The grass pulling active roller (31) comprises a first hollow roller (312), a first shaft head (313) arranged on both ends of the first hollow roller (312), and a first grass pulling blade (314) arranged on the outer circumferential surface of the first hollow roller (312); the first gear (311) is sleeved on the first shaft head (313).

4. The conveying system according to claim 3, characterized in that The grass pulling passive roller (32) comprises a second hollow roller (322), a second shaft head (323) arranged on both ends of the second hollow roller (322), and a second grass pulling blade (324) arranged on the outer circumferential surface of the second hollow roller (322), and the second gear (321) is sleeved on the second shaft head (323).

5. The conveying system according to claim 4, characterized in that A plurality of the first grass-pulling blades (314) are evenly spaced on the outer circumferential surface of the first hollow roller (312); the number of the second grass-pulling blades (324) is the same as that of the first grass-pulling blades (314), and the second grass-pulling blades (324) are evenly spaced on the outer circumferential surface of the second hollow roller (322).

6. The conveying system according to any one of claims 2 to 5, characterized in that A first sprocket (11) is arranged on the active roller of the first-stage elevator (1), a second sprocket (21) is arranged on the active roller of the second-stage elevator (2), and a third sprocket (315) is arranged on the grass pulling active roller (31). The driving device (7) includes a chain (71) and a driver wound around the first sprocket (11), the second sprocket (21) and the third sprocket (315).

7. The conveying system according to claim 6, characterized in that The driving device (7) further comprises an idler wheel (72) for tensioning the chain (71).

8. The conveying system according to claim 1, characterized in that The secondary shredding device comprises a transmission shaft (44) rotatably arranged in the housing (43), an impeller (41) arranged on the transmission shaft (44), and a cutter (42) arranged on the transmission shaft (44); the cutter (42) is arranged above the primary shredding device (3).

9. The conveying system according to claim 1, characterized in that It also includes a rear elevator (5) for receiving materials on the secondary elevator (2) and a granary (6) for collecting materials on the rear elevator (5).

10. A fresh corn harvester, characterized in that: A delivery system comprising the delivery system of any one of claims 1 to 9.

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