CN112868363A - Combine harvester - Google Patents
Combine harvester Download PDFInfo
- Publication number
- CN112868363A CN112868363A CN202010129374.9A CN202010129374A CN112868363A CN 112868363 A CN112868363 A CN 112868363A CN 202010129374 A CN202010129374 A CN 202010129374A CN 112868363 A CN112868363 A CN 112868363A
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- China
- Prior art keywords
- outer cover
- drive shaft
- elevator
- conveying
- combine harvester
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000003780 insertion Methods 0.000 claims abstract description 25
- 230000037431 insertion Effects 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims description 35
- 238000003306 harvesting Methods 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 5
- 238000013459 approach Methods 0.000 claims description 2
- 235000013339 cereals Nutrition 0.000 description 23
- 238000005520 cutting process Methods 0.000 description 14
- 230000005484 gravity Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
- A01D41/02—Self-propelled combines
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
- A01D41/12—Details of combines
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D61/00—Elevators or conveyors for binders or combines
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Harvester Elements (AREA)
Abstract
The invention provides a combine harvester. Conventionally, there has been a problem that a valley pole is wound around an anti-wind body because the anti-wind body is provided in a cylindrical shape on the outer periphery of a drive shaft of an elevator. The combine harvester is characterized in that a conveying lifter (15) of the combine harvester is provided with a cylindrical outer cover (31) on the inner surface side of a left driving chain wheel (19) and a right driving chain wheel (19), the inner surface of the driving chain wheel (19) is provided with an insertion groove (45) for the outer end surface of the outer cover (31) to be engaged when the outer cover (31) is installed, a conical part (46) is formed on the inner surface of the driving chain wheel (19), and the axial height of the lifter driving shaft (16) is increased as the conical part (46) is closer to the insertion groove (45) in the radial direction of the lifter driving shaft (16).
Description
Technical Field
The invention relates to a combine harvester.
Background
Conventionally, in a conveying elevator that conveys grain stalks harvested by a harvesting device to a threshing device, there is known a configuration in which a cylindrical anti-entanglement body is provided on the outer periphery of an elevator drive shaft at the base of the conveying elevator (patent document 1).
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2019-4845
Disclosure of Invention
In the known example, since the cylindrical anti-wind body is simply provided on the outer periphery of the elevator drive shaft, the valley rod is caught between the drive sprocket and the anti-wind body, and the valley rod is wound around the anti-wind body.
The present application is directed to a drive shaft, a drive sprocket, and an anti-entanglement body of an elevator, which prevent a valley rod from being entangled in the drive shaft and/or the anti-entanglement body of the elevator, and which facilitate the mounting and assembly of components around the drive sprocket.
The invention described in claim 1 is a combine harvester including: a traveling device 2 for traveling the machine body; a harvesting device 4 disposed in front of the traveling device 2; a threshing device 3 for threshing the grain stalks; and a conveying elevator 15 for conveying the grain stalks from the harvesting unit 4 to the threshing unit 3, wherein the conveying elevator 15 includes: an elevator drive shaft 16 provided on the threshing device 3 side and used for driving rotation input of an engine; a conveying drum 20 provided on the harvesting unit 4 side of the conveying elevator 15; left and right 2 drive sprockets 19 fixed to the elevator drive shaft 16; and a circulating conveying chain 23 having a plurality of conveying bodies 24 spaced apart at predetermined intervals and wound around the drive sprocket 19 and the conveying drum 20, wherein the drive sprocket 19 has a cylindrical outer cover 31 on the inner surface side thereof, and the drive sprocket 19 has a tapered portion 46 on the inner surface side thereof, and the tapered portion 46 is formed such that the height of the elevator drive shaft 16 in the axial direction increases as the tapered portion 46 approaches the insertion groove 45 in the radial direction of the elevator drive shaft 16.
In the invention according to claim 2, in addition to claim 1, the drive sprocket 19 has the insertion groove 45 on the inner surface thereof into which the outer end surface of the outer cover 31 bites when the outer cover 31 is attached.
The invention described in claim 3 is the one described in claim 1 or 2, further including a bearing holding metal fitting 32 for supporting the outer cover 31 to the elevator drive shaft 16.
In the invention according to claim 4, in addition to claim 3, a recess 40 for positioning the bearing holding metal fitting 32 is provided in the bolt fixing plate 39 of the outer cover 31.
In the invention according to claim 5, in addition to claim 3 or claim 4, a plate 41 is provided in the outer cover 31, and the plate 41 is provided with a hole having substantially the same diameter as the outer diameter of the bearing-retaining bracket 32.
The invention described in claim 6 is the invention according to any one of claims 3 to 5, wherein an anti-wind-up body 30 fixed to the elevator car 17 is provided on an outer periphery of the elevator drive shaft 16, the outer cover 31 is a casting and has an outer large-diameter portion outer cover 31A and an inner small-diameter portion outer cover 31B, an outer end of the anti-wind-up body 30 is fitted into an outer periphery of the large-diameter portion outer cover 31A of the outer cover 31, and a space 42 capable of accommodating the fixing bolt 35 for fixing the bearing holding metal fitting 32 is formed between an outer peripheral surface of the small-diameter portion outer cover 31B of the outer cover 31 and an inner peripheral surface of the anti-wind-up body 30.
The present invention has the following effects.
In the invention described in claim 1, the cylindrical outer cover 31 is provided between the outer end surface of the anti-wind body 30 and the inner surface of the drive sprocket 19, the elevator drive shaft 16 in the outer cover 31 is axially attached to the bearing retainer 32, and the outer cover 31 and the drive sprocket 19 rotate integrally, whereby the wind of the conveying grain bars around the outer cover 31 can be prevented, and the insertion groove 45 into which the outer end surface of the outer cover 31 is engaged when the outer cover 31 is attached is provided on the inner surface of the drive sprocket 19, so that the inner surface of the drive sprocket 19 and the outer end surface of the outer cover 31 can be disposed without a gap, and the wind of the conveying grain bars around the outer cover 31 can be prevented, and the tapered portion 46 that increases toward the insertion groove 45 is provided on the inner surface of the drive sprocket 19 around the insertion groove 45 over the entire circumference, whereby the wind of the conveying grain bars can be further suppressed.
In the invention according to claim 2, since the inner surface of the drive sprocket 19 has the insertion groove 45 into which the outer end surface of the outer cover 31 is engaged when the outer cover 31 is attached, the entanglement of the conveyed grain bars can be further suppressed.
In the invention described in claim 3, since the bearing retainer fitting 32 is provided in the lifter drive shaft 16 in the outer cover 31, the bearing retainer fitting 32 and the outer cover 31 assembled to the bearing retainer fitting 32 can be divided into separate pieces, the machining range of the bearing insertion portion can be limited to only the bearing width, and the clearance between the outer cover 31 and the drive sprocket 19 and the influence of the tolerance due to the assembly to the lifter drive shaft 16 are less than those in the case of the assembly to the lifter drive shaft 16.
In the invention described in claim 4, since the recess 40 for positioning the bearing retainer fitting 32 is provided in the bolt fixing plate 39 of the outer cover 31, the accuracy of centering between the bearing retainer fitting 32 and the outer cover 31 can be improved.
In the invention described in claim 5, since the plate 41 having the hole formed in the outer diameter of the bearing retainer fitting 32 is provided in the outer cover 31, the accuracy of centering between the bearing retainer fitting 32 and the outer cover 31 can be improved, and the outer cover 31 can be held at 2, thereby improving the strength.
In the invention described in claim 6, the outer cover 31 is formed by casting into an outer large-diameter portion outer cover 31A and an inner small-diameter portion outer cover 31B, the outer end of the anti-wind body 30 is fitted into the outer periphery of the large-diameter portion outer cover 31A of the outer cover 31, and a space 42 for housing the fixing bolt 35 for fixing the bearing holding metal fitting 32 is formed between the outer peripheral surface of the small-diameter portion outer cover 31B of the outer cover 31 and the inner peripheral surface of the anti-wind body 30, so that the presence of a projection on the outer periphery of the outer cover 31 can be eliminated, and the transporting cereal straw can be prevented from being wound around the outer cover 31.
Drawings
Fig. 1 is a side view of a combine harvester.
Fig. 2 is a vertical cross-sectional side view showing a drive sprocket of the conveying elevator and the conveying drum.
Fig. 3 is a plan view of the vicinity of the drive sprocket and the anti-entangling body of the conveying elevator.
Fig. 4 is a plan view of a sectional view of another embodiment.
Fig. 5 is a plan sectional view and a vertical sectional view of another embodiment.
Fig. 6 is a side, front, rear view of the harvesting device near the table.
Fig. 7 is a side view, front view, and rear view of another embodiment.
Fig. 8 is a side view, a front view, and a rear view of another embodiment.
Fig. 9 is a side view, front view, and rear view of another embodiment.
Fig. 10 is a side view, front view, and rear view of another embodiment.
Fig. 11 is a side view, front view, and rear view of another embodiment.
In the figure: 1-machine body frame, 2-running device, 3-threshing device, 4-harvesting device, 5-grain box, 6-operation part, 10-dividing device, 11-raking wheel, 12-cutting knife, 13-grain-feeding spiral, 14-working table, 15-conveying elevator, 16-elevator driving shaft, 17-elevator case, 18-side plate, 19-driving sprocket, 20-conveying drum, 21-tooth part, 23-conveying chain, 24-conveying body, 30-anti-winding body, 31-outer side cover, 32-bearing holding metal piece, 33-sprocket hub, 34-bearing, 35-bolt, 36-lock nut, 37-fixing bolt, 38-fixing bolt, 39-bolt fixing plate, 40-recess, 41-plate, 42-space, 45-insertion groove, 46-taper part, 50-yoke shaft, 51-left, 52-balance weight, 53-auxiliary shaft, 54-side plate, 60-unit bearing, 61-frame, 63-arm, 65-wheel lift cylinder, 66-axis of rotation.
Detailed Description
An embodiment of the present invention will be described with reference to the accompanying drawings, in which reference numeral 1 denotes a machine body frame, 2 denotes a traveling device provided at a lower position of the machine body frame 1, 3 denotes a threshing device provided at an upper position of the machine body frame 1, 4 denotes a harvesting device provided in front of the machine body frame 1, 5 denotes a grain tank provided at a side portion of the threshing device 3 and temporarily storing grains taken out by the threshing device 3, and 6 denotes a manipulation unit (fig. 1).
The harvesting device 4 is configured such that left and right grain dividing devices 10 provided at the front, a raking wheel 11 for raking the grain bars, a cutting knife 12 for harvesting the raked grain bars, and a grain feeding screw 13 for gathering the harvested grain bars are mounted on a table 14. The harvesting unit 4 has a conveying elevator (conveying device) 15 attached to a table 14 at its front end, and the base of the conveying elevator 15 is connected to a threshing chamber (not shown) of the threshing unit 3 (fig. 1).
The lifter drive shaft 16 at the base of the carrying lifter 15 is configured to input rotation of an engine (not shown), and the lifter drive shaft 16 also serves as a harvesting input shaft (fig. 2) for transmitting rotation to the harvesting device 4.
The carrying lift 15 and the harvesting unit 4 are vertically rotated about a lift drive shaft 16 as a rotation fulcrum.
An elevator drive shaft 16 is rotatably attached to left and right side plates 18 of an elevator cage 17 of the conveying elevator 15, and a pair of left and right drive sprockets 19 are fixed to the elevator drive shaft 16 in the elevator cage 17. A looped conveying chain 23 is looped around the drive sprocket 19 and the pair of left and right tooth portions 21 of the conveying drum 20 that is driven to rotate. A plurality of conveyance bodies 24 are provided at predetermined intervals on the conveyance chain 23.
An anti-wind body 30 is provided on the outer periphery of the lifter drive shaft 16 between the left and right drive sprockets 19. The anti-wind body 30 is mounted in a fixed state on the elevator car 17 side.
Therefore, the presence of the anti-entanglement bodies 30 suppresses the conveying grain bars from being entangled around the lifter drive shaft 16.
The anti-wind body 30 is configured to have a cylindrical shape by being fitted with a equally divided cylindrical member half-divided in the bus line direction, although not shown, and the anti-wind body 30 is attached to the elevator car 17 in a fixed state via a fixing member (not shown).
A cylindrical outer cover 31 is provided between the outer end surface of the anti-wind body 30 and the inner surface of the drive sprocket 19, and the elevator drive shaft 16 in the outer cover 31 is axially attached to a bearing holding metal fitting 32.
Therefore, by providing the outer cover 31 outside the anti-wind body 30, the conveying grain bars are further prevented from being wound around the lifter drive shaft 16.
An annular insertion groove 45 (fig. 3 to 5) into which the outer end surface of the outer cover 31 is engaged when the outer cover 31 is attached is provided on the inner surface of the drive sprocket 19.
A tapered portion 46 that increases toward the insertion groove 45 is provided over the entire circumference of the inner surface of the drive sprocket 19 around the insertion groove 45.
Therefore, the conveying grain bars are prevented from being entangled with the entanglement preventing body 30 and the outer cover 31.
That is, if the outer end of the outer cover 31 is brought into contact with the inner surface of the drive sprocket 19, a slight gap is formed between the outer end of the outer cover 31 and the inner surface of the drive sprocket 19 due to the difference in product manufacturing accuracy, and the conveying grain bars are caught in the gap and wound around the outer cover 31 and the entanglement preventing body 30 due to the catching resistance, but in the present invention, the insertion grooves 45 in the inner surface of the drive sprocket 19 are caught in the outer end surface of the outer cover 31, and the tapered portions 46 that are increased in the direction of the insertion grooves 45 are provided over the entire circumference of the inner surface of the drive sprocket 19 around the insertion grooves 45, so that the conveying grain bars are guided to the center side of the conveying elevator 15 by the tapered portions 46, and the catching resistance between the outer periphery of the outer cover 31 and the conveying grain bars is suppressed, and therefore, the entanglement of the conveying grain bars around the outer cover 31 and the entanglement preventing body 30 is suppressed (prevented).
Therefore, when the outer cover 31 is fitted to the insertion groove 45, the drive sprocket 19 and the outer cover 31 may be overlapped with each other in a plan view, and the insertion groove 45 is formed wider than the thickness of the outer cover 31 in the radial direction.
Therefore, the outer end surface of the outer cover 31 is fitted in the insertion groove 45 with a margin in the radial direction, and interference and obstruction of the rotation of the drive sprocket 19 by the outer cover 31 in a fixed state due to the accuracy of attachment of the outer cover 31 to the drive sprocket 19 and the misalignment between the axial center position of the outer cover 31 and the axial center position of the drive sprocket 19 are always prevented.
Further, since the insertion groove 45 is formed wider than the thickness of the outer cover 31 in the radial direction, assembly errors can be absorbed, and mounting and assembly can be facilitated.
In other words, the width of the insertion groove 45 is formed larger than the wall thickness of the outer cover 31.
A bearing retainer 32 for centering (centering) the outer cover 31 is provided at an end of a sprocket hub 33 of the drive sprocket 19.
That is, since the anti-wind body 30 is supported by the elevator car 17 without abutting on the inner surface of the drive sprocket 19, and the outer cover 31 and the drive sprocket 19 attached to the anti-wind body 30 overlap the outer cover 31 in a plan view by the insertion groove 45, the bearing holding metal fitting 32 is provided so as not to eccentrically rotate the outer cover 31 with respect to the elevator drive shaft 16.
The bearing holding metal fitting 32 and the outer cover 31 assembled to the bearing holding metal fitting 32 are divided.
Therefore, the machining range of the bearing insertion portion may be only a wide bearing, and the influence of tolerance due to the clearance between the outer cover 31 and the drive sprocket 19 is small compared to the assembly to the lifter drive shaft 16.
The bearing 34 and the bearing holding metal fitting 32 are assembled and then directly set at a position (tool entry position) where the fixing bolt 35 of the drive sprocket 19 and the lock nut 36 are detached. Reference numeral 37 is a fixing bolt that fixes the drive sprocket 19 to the elevator drive shaft 16.
Therefore, the maintenance property is improved.
The outer cover 31 may be attached by any order, for example, fixing the bearing retainer 32 to the lifter drive shaft 16, inserting the outer cover 31 from the inside of the lifter 15 into the outer periphery of the bearing retainer 32, and attaching the half-split anti-wind bodies 30 split in the bus bar direction to the inner end surface side of the outer cover 31 in a covering manner.
Further, the outer cover 31 and the bearing holding metal fitting 32 are fixed to a bolt fixing plate 39 fixed to the outer cover 31 by a fixing bolt 35 and a locknut 36.
The bearing holding metal fitting 32 and the outer cover 31 assembled to the bearing holding metal fitting 32 are integrally assembled (COMP).
Therefore, the assembling and disassembling performance is improved, and the weight is reduced.
The complete assembly may be any structure, for example, the outer cover 31 and the bearing holding metal fitting 32 are integrated by welding or the like, and the bearing or the like is attached to the outer cover and the bearing holding metal fitting and the elevator drive shaft 16.
The bolt securing plate 39 is formed of a cylindrical member concentric with the outer cover 31, and the outer circumferential surface of the bolt securing plate 39 is closely attached to the inner circumferential surface of the outer cover 31, and the outer cover 31 supports an applied load received from the circumferential direction, thereby preventing deformation of the outer cover 31.
The outer cover 31 and the anti-wind body 30 are fixed by a fixing bolt 38 outward in the axial direction of the lifter drive shaft 16.
Therefore, the attachment strength of the outer cover 31 and the anti-wind body 30 is improved.
A recess 40 (fig. 4) for positioning the bearing holding metal fitting 32 is provided in the bolt securing plate 39 of the outer cover 31.
Therefore, the bolt fixing plate 39 is positioned by the recess 40 with respect to the bearing holding metal member 32 concentric with the lifter drive shaft 16, so that the centering accuracy of the bearing holding metal member 32 and the outer cover 31 is improved.
The plate 41 having a hole having the same diameter as the outer diameter of the bearing holder 32 is completely assembled (COMP) to the outer cover 31, and the plate 41 is disposed so as to be inserted into the bearing holder 32 during assembly.
Therefore, since the outer periphery of the bearing holding metal fitting 32 is supported by the hole of the plate 41, the centering accuracy of the bearing holding metal fitting 32 and the outer cover 31 is improved, and the strength is improved by holding the outer cover 31 at 2.
That is, the outer cover 31 is held from the inside at 2 of the bolt securing plate 39 and the plate 41.
In other words, the outer peripheral surface of the bolt fixing plate 39 is closely contacted with the inner peripheral surface of the outer cover 31, and the plate 41 supports the outer periphery of the bearing holding metal fitting 32 through the hole of the plate 41 in the same manner as supporting the applied load received from the circumferential direction of the outer cover 31, and as a result, the outer periphery of the plate 41 is closely contacted with the inner peripheral surface of the outer cover 31 and supported, thereby preventing the deformation of the outer cover 31.
This arrangement provides the outer covers 31 on both the left and right sides of the anti-wind body 30, and therefore the support rigidity of the anti-wind body 30 is also improved.
In this case, the outer cover 31, the bolt fixing plate 39, the plate 41, and the like may be assembled by any method, for example, inserting the plate 41 into the elevator drive shaft 16, then inserting the bearing retainer fitting 32 into the elevator drive shaft 16, sandwiching the plate 41 from the left-right direction by the sprocket hub 33 and the bearing retainer fitting 32, fixing the plate 41 while restricting the movement in the axial direction, and supporting the applied load received by the outer cover 31 from the circumferential direction by the outer periphery of the plate 41.
Then, the bolt fixing plate 39 welded and fixed to the outer cover 31 is brought into contact with the inner end surface of the bearing holding metal fitting 32, and the bearing holding metal fitting 32 is fixed to the bolt fixing plate 39 by the fixing bolt 35 and the locknut 36.
Thereby, the outer cover 31 is fixed to the anti-wind-up body 30, the bearing holding metal fitting 32 is fixed to the outer cover 31, and the plate 41 is sandwiched between the bearing holding metal fitting 32 and the sprocket hub 33 of the drive sprocket 19.
Further, the fixing plate 41 may be welded to the elevator drive shaft 16, the bearing holding metal fitting 32 may be inserted into the plate 41, the bolt fixing plate 39 may be welded to the outer cover 31 by the fixing bolt 35 and the locknut 36 while the bolt fixing plate 39 is abutted to the inner end surface of the bearing holding metal fitting 32, the bearing holding metal fitting 32 may be fixed to the bolt fixing plate 39, the bolt fixing plate 39 may be welded to the outer cover 31 in this state, the complete assembly of the outer cover 31 may be completed, the outer cover 31 which is completely assembled with the bearing holding metal fitting 32 being incorporated therein may be inserted into the elevator drive shaft 16, and the half-split anti-winding body 30 may be covered on the inner outer peripheral portion of the elevator drive shaft 16.
Fig. 5 shows another embodiment, and the outer cover 31 is formed by casting.
Therefore, the gap can be reduced.
The bearing holding metal fitting 32 and the fixing bolt 38 of the outer cover 31 assembled thereto are configured to be hidden inside the anti-wind-up body 30 in the outer cover 31 made of a casting.
That is, the outer cover 31 is formed as an outer large diameter portion outer cover 31A and an inner small diameter portion outer cover 31B, and the outer end of the anti-wind body 30 is fitted into the outer periphery of the large diameter portion outer cover 31A of the outer cover 31, and in this state, a space 42 is formed between the outer peripheral surface of the small diameter portion outer cover 31B of the outer cover 31 and the inner peripheral surface of the anti-wind body 30, and the fixing bolt 35 is provided in the space 42.
Therefore, the protrusion of the outer periphery of the anti-wind body 30 can be reduced.
Further, since the outer cover 31 is integrally formed by casting into the outer large-diameter portion outer cover 31A on the outer side and the inner small-diameter portion outer cover 31B on the inner side, the outer diameter of the bearing retainer fitting 32 can be directly supported by the small-diameter portion outer cover 31B, and the bolts (the fixing bolt 35 and the lock nut 36 in fig. 3) for fixing the bearing retainer fitting 32 can be eliminated.
A yoke shaft 50 for transmitting drive rotation to a cutter blade 12 of a harvesting device 4 is provided on a side of a left side plate 51 of a table 14, a balance weight 52 is detachably provided on the left side plate 51 above the yoke shaft 50, and a flywheel 54 is provided on a counter shaft 53 (fig. 6).
Therefore, vibration of the cutting blade 12 is suppressed, and vibration and noise generation of the entire cutting blade 12 and the harvesting device 4 are suppressed.
That is, the yoke shaft 50 and the counter weight 52 are rotated reciprocally integrally, which contributes to suppression of vibration of the cutting blade 12, and the cutting blade 12 having a reciprocating cutting structure is configured so that the movement speed of the cutting blade 12 is set to the reference speed as much as possible by the weight of the flywheel 54, and the rotational fluctuation due to the cutting energy is stabilized.
As shown in fig. 7, the yoke shaft 50 is fitted to a frame 61 to which the unit bearing 60 supporting the yoke shaft 50 is fixed, the yoke shaft 50 is fitted to be rotatable in a reciprocating manner, one end of an arm 63 is fixed to the yoke shaft 50 to be attachable and detachable, and the balance weight 52 is fitted to the other end of the arm 63, so that the yoke shaft 50, the arm 63, and the balance weight 52 are rotated in a reciprocating manner.
Therefore, vibration of the cutting blade 12, vibration generation of the entire harvesting device 4, and noise can be suppressed, and thus, vibration of the engine (not shown) can be suppressed, and durability of the engine mount (not shown) can be improved.
Further, the influence of the vibration of the cutting blade 12 on the frame 61 to which the unit bearing 60 is fixed can be reduced.
Further, since the arm 63 and the counter weight 52 are provided below the wheel lift cylinder 65 that moves the raking wheel 11 up and down, the space below the wheel lift cylinder 65 can be effectively used.
As shown in fig. 8, a counterweight 52 is provided above the yoke shaft 50 between the wheel lift cylinder 65 and the assembly frame 61 of the unit bearing 60.
Therefore, by avoiding the arrangement of the balance weight 52 from the wheel lift cylinder 65, the center of gravity of the balance weight 52 can be spaced apart from the yoke shaft 50, the weight of the balance weight 52 can be suppressed by increasing the speed, and the influence of the vibration of the cutting blade 12 can be reduced.
As shown in fig. 9, a counterweight 52 is disposed above the yoke shaft 50 between the wheel lift cylinder 65 and the wheel drive chain 68.
Therefore, by avoiding the arrangement of the balance weight 52 from the wheel lift cylinder 65, the center of gravity of the balance weight 52 can be spaced apart from the rotation shaft 66 of the yoke shaft 50, the weight of the balance weight 52 can be suppressed by increasing the speed, and the influence of the vibration of the cutting blade 12 can be reduced.
As shown in fig. 10, the counterweight 52 is disposed above the yoke 50 between the wheel lift cylinder 65 and the wheel drive chain 68, and the counterweight 52 is disposed parallel to the wheel lift cylinder 65 and the chain line of the wheel drive chain 68.
Therefore, by avoiding the arrangement of the balance weight 52 from the wheel lift cylinder 65, the center of gravity of the balance weight 52 can be spaced apart from the rotation shaft 66 of the yoke shaft 50, the weight of the balance weight 52 can be suppressed by increasing the speed, and the influence of the vibration of the cutting blade 12 can be reduced.
As shown in fig. 11, a counterweight 52 is provided integrally with the yoke shaft 50 at the rear upper portion of the counter shaft 53.
Therefore, since the counterweight 52 is provided in the space on the left-hand side of the side surface of the lifter 15 of the table 14, the left-hand side of the unharvested grain stalks can be prevented from being caught.
Claims (6)
1. A combine harvester is provided with: a running device (2) for running the machine body; a harvesting device (4) arranged in front of the travelling device (2); a threshing device (3) for threshing the grain stalks; and a conveying lifter (15) for conveying the grain rods from the harvesting device (4) to the threshing device (3),
the combine-harvester is characterized in that,
the conveyance lifter (15) is provided with:
a lifter drive shaft (16) which is arranged at the threshing device (3) side and is input with the driving rotation of the engine;
a conveying drum (20) provided on the harvesting device (4) side of the conveying elevator (15);
a left and a right 2 drive sprockets (19) fixed to the elevator drive shaft (16); and
a circulating conveying chain (23) having a plurality of conveying bodies (24) at predetermined intervals and wound around the drive sprocket (19) and the conveying drum (20),
a cylindrical outer cover (31) is provided on the inner surface side of the left and right drive sprockets (19),
a tapered portion (46) is formed on the inner side surface of the drive sprocket (19), and the height of the elevator drive shaft (16) in the axial direction increases as the tapered portion (46) approaches the insertion groove (45) in the radial direction of the elevator drive shaft (16).
2. A combine harvester according to claim 1,
the inner surface of the drive sprocket (19) is provided with the insertion groove (45) for the outer end surface of the outer cover (31) to be engaged when the outer cover (31) is mounted.
3. A combine harvester according to claim 1 or 2,
the elevator drive shaft device is provided with a bearing holding metal fitting (32) for supporting the outer cover (31) on the elevator drive shaft (16).
4. A combine harvester according to claim 3,
a bolt fixing plate (39) of the outer cover (31) has a recess (40) for positioning relative to the bearing holding metal fitting (32).
5. A combine harvester according to claim 3 or 4,
a plate (41) is provided in the outer cover (31), and a hole having substantially the same diameter as the outer diameter of the bearing holding metal fitting (32) is opened in the plate (41).
6. A combine harvester according to any one of claims 3 to 5,
an anti-winding body (30) fixed to the elevator cage (17) is provided on the outer periphery of the elevator drive shaft (16),
the outer cover (31) is a casting having an outer large-diameter portion outer cover (31A) and an inner small-diameter portion outer cover (31B),
the outer end of the anti-winding body (30) is fitted into the outer periphery of a large-diameter portion outer cover (31A) of the outer cover (31), and a space (42) capable of accommodating a fixing bolt (35) for fixing the bearing holding metal fitting (32) is formed between the outer peripheral surface of a small-diameter portion outer cover (31B) of the outer cover (31) and the inner peripheral surface of the anti-winding body (30).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-217058 | 2019-11-29 | ||
| JP2019217058A JP6935811B2 (en) | 2019-11-29 | 2019-11-29 | combine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112868363A true CN112868363A (en) | 2021-06-01 |
Family
ID=76042838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010129374.9A Pending CN112868363A (en) | 2019-11-29 | 2020-02-28 | Combine harvester |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6935811B2 (en) |
| CN (1) | CN112868363A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015035984A (en) * | 2013-08-15 | 2015-02-23 | 株式会社クボタ | Ordinary type combine |
| CN106572636A (en) * | 2014-09-02 | 2017-04-19 | 株式会社久保田 | Harvester |
| CN107529722A (en) * | 2015-05-29 | 2018-01-02 | 株式会社久保田 | Cropper and ordinary combine harvester |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03102817U (en) * | 1990-02-02 | 1991-10-25 | ||
| JP6639961B2 (en) * | 2015-05-29 | 2020-02-05 | 株式会社クボタ | Ordinary combine |
| JP2018102163A (en) * | 2016-12-23 | 2018-07-05 | 井関農機株式会社 | combine |
| JP6768603B2 (en) * | 2017-06-28 | 2020-10-14 | 株式会社クボタ | combine |
| JP7270441B2 (en) * | 2018-04-27 | 2023-05-10 | 株式会社クボタ | combine |
-
2019
- 2019-11-29 JP JP2019217058A patent/JP6935811B2/en active Active
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2020
- 2020-02-28 CN CN202010129374.9A patent/CN112868363A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015035984A (en) * | 2013-08-15 | 2015-02-23 | 株式会社クボタ | Ordinary type combine |
| CN106572636A (en) * | 2014-09-02 | 2017-04-19 | 株式会社久保田 | Harvester |
| CN107529722A (en) * | 2015-05-29 | 2018-01-02 | 株式会社久保田 | Cropper and ordinary combine harvester |
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| JP2021083429A (en) | 2021-06-03 |
| JP6935811B2 (en) | 2021-09-15 |
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