CA1089313A - Pea harvesters - Google Patents
Pea harvestersInfo
- Publication number
- CA1089313A CA1089313A CA340,466A CA340466A CA1089313A CA 1089313 A CA1089313 A CA 1089313A CA 340466 A CA340466 A CA 340466A CA 1089313 A CA1089313 A CA 1089313A
- Authority
- CA
- Canada
- Prior art keywords
- apron
- conveyor
- conveyors
- harvester according
- 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.)
- Expired
Links
Abstract
ABSTRACT
A pea-harvester is disclosed comprising a threshing device and two inclined, vibratory, apron conveyors disposed to receive peas and trash from the threshing device. One of the apron conveyors has a lower end portion over-lying a lower end portion of the other conveyor and both conveyors are drivable in opposite senses so that, in operation, their upper runs move outwardly away from one another.
A pea-harvester is disclosed comprising a threshing device and two inclined, vibratory, apron conveyors disposed to receive peas and trash from the threshing device. One of the apron conveyors has a lower end portion over-lying a lower end portion of the other conveyor and both conveyors are drivable in opposite senses so that, in operation, their upper runs move outwardly away from one another.
Description
~ 9313 This application is divided out of copending application No.
2525364, filed May 12, 1976.
This invention relates to pea-harvesters incorporating apparatus for cleaning crops.
Pea harvesters have been developed which act substantially in the same manner as comblne harvesters for grain crops that is the valuable part of the plant is separated from the discard part of the plant and the useful part of the crop is delivered to a store or to a factory in a relatively clean condition.
From the standpoint of achieving high value it is particularly desirable that the useful crop delivered to a store or to a factory should be as clean as possible and thus it has been proposed to incorporate in pea harvesters cleaning arrangements which reduce the amount of dirt, leaves and trash at the end of the cycle of operation of the machine.
Clearly, for efficiency of operation, in this respect, it is desir-able that immediately the pea plants have been threshed as much dirt and unwanted plant parts should be removed immediately after the threshing stage.
Further, it is desirable that this cleaning stage which may not be the only ; one, should be capable of accommodating different harvesting conditions.
According to the present invention there is provided a pea-harves-; ter comprising a threshing device and two inclined, vibratory, apron con-veyors disposed to receive peas and trash from the threshing device, one said apron conveyor having a lower end portion overlying a lower end portion of :
the other conveyor and both conveyors being drivable in opposite senses so that, in operation, their upper runs move outwardly away from one another.
~; Apparatus for cleaning crops embodying the invention will now bedescribed, by way of example, with reference to the accompanying diagrammatic drawings, in which:
q~
~: :
~9313 Figure 1 is a side elevation, showing an outline of the integers of one embodiment cleaning apparatus of a harvesting machine in accordance with the invention;
Figure 2 is a vertical section at the rear axle of the machine of Figure 1, certain parts being shown in alternative positions;
Figure 3 is an end elevation showing cleaning apron conveyors of the cleaning apparatus of the harvester of Figures 1 and 2 disposed below a threshing drum of the machine; and Figure 4 is a perspective view of a part of one of the conveyors of Figure 3.
One embodiment of pea-harvesting machine in accordance with the invention will now be described, in general outline, with reference to :
Figure 1. The harvester is self-propelled and the various integers or units are supported on a frame (parts only of which are illustrated) on pairs of wheels 100, 102. The wheels 100 serve to drive the machine through a trans-mission (not shown) coupled to a single power source (not shown). The machine is controlled from the driving position indicated generally at platform 106.
~ Turning now to the operative parts of the pea harvesting machine as i such, the machine includes a pick-up reel 110 which extends across the whole width of the machine and at least a certain distance beyond the wider of the wheel tracks, the reel being supported for pivotal motion about an axis i extending longitudinaily of the machine at 113 on a beam or other pick-up .
- levelling frame 112. The reel is also supported for rotation in bearingQ
mounted on the frame 112.
Rearwardly of the reel 110 there is provided an inclined, first ~, conveyor 130 having a width substantially equal to the wldth of the reel and inclined at an angle of approximately 30 to the horizontal. The upper, rear, ~ end of the first, longitudinally-extending, conveyor 130 overlies two trans-: j :i ~ -2-; ~ . - . - ; - -. .. ~
. , . , ,' ' ' ' :: .. , ' ; : :
~ 39313 versely-extending in-feed (second) conveyors 180, 182 each of which has an upper run inclined upwardly towards the centre-line of the machine. The second conveyors 180, 182 are driven so that their upper runs are moving inwardly, that is, towards the centre-line of the machine. The inner ends are spaced from one another and overlie a longitudinally-extending, third, inclined conveyor 200 which is arranged for operation with the upper run moving rearwardly, as is the first longitudinal conveyor 130. The conveyor 200 is substantially narrower than the conveyor 130 and is pivotally mounted at both ends.
The rear end of the conveyor 200 overlies and is spaced a short distance only from a lower end portion of a longitudinally-extending, elevator conveyor 250 which has a substantially greater angle of inclination than the conveyor 200. The conveyor 250 has a width substantially the same as the conveyor 200 and the upper end terminates just short of the inlet of a threshing drum 300 which is preferably constructed in accordance with our copending British Application No. 21475/72 (Serial No. 1,396,931). The longitudinally-extending, elevator, conveyor has a casing which serves to ensure that the vines, pea pods and other material do not escape laterally as they are conveyed to the drum 300.
Since the drum 300 does not form part of the present invention and has been fully described in the co-pending British Application 21475/72 refer-red to above, substantially no further details of this construction will be given but it is necessary to state that the drum has a casing which is per-! forate so that separated peas may fall through onto cleaning apron conveyors 350, 352 which serve to provide an initial or first cleaning stage for the separated peas and extend along the whole length of the drum.
The apron conveyors 350, 352, to be described in detail herein-after, overlie a horizontal, longitudinally-extending, pea-carrying conveyor . . ~ , , . . .: . . - :
, .. ~ , , ~ . . ' . :
1~89313 400, an upper run 402 of which is driven in the forwards direction. The conveyor includes rollers 404, 406. A scraper device, not shown, may act against the conveyor at the roller 404. Adjacent the forward end of the upper run and the forward roller 404, ducting 420 is provided which encloses a lower run 422 of a bucket elevator conveyor 450 and has an opening 424 which serves as an air intake. The ducting is connected with a fan 426 having an outlet opening 428. The fan serves to draw off dust and other trash and return it to the field being harvested. This arrangement forms a second cleaning stage.
The upper end of the bucket elevator 450 discharges onto a horizon-tal, podder, conveyor 500 the upper run of which is arranged to be driven in the forwards direction in relation to the harvester as a whole and deliver peas and any remaining dirt or other extraneous matter to an upper run of a horizontal podder chain 550 which acts as a moving sieve and also forms part of the upper boundary of a main hopper 600. The upper run of the chain 550 , also travels in the forwards direction. In order to remove any remaining dirt, ducting 552 is provided above the upper run of the chain 550 and is connected to the inlet of a fan 554, the outlet of which is connected to downwardly-extending ducting 556. Any unthreshed pods or debris remain on ~ 20 the upper run of the chain 550 and do not fall into the hopper. Such pods - and debris will fall into ducting 558 which lies forwardly of a vertical run of the chain 550 and will be returned to the in-feed conveyors 180, 182 for re-cycling. This arrangement forms a third cleaning stage.
The apron conveyors 350, 352 will now be described in greater detail with reference to the remaining Figures.
s The apron conveyors 350, 352 are mounted below the threshing drum ~, 300, one of the aprons, 350, having a lower end portion which overlies a ; lower end portion of the other apron 352. Since the construction of both , :
~i,,,,,, :
.~: . : : : . .
.. . ~ - , . ' .
:. .: :
;, : . . .
apron conveyors is in substance the same, similar reference numerals will be given in the drawings with the addition of a prime to the parts apertaining to the conveyor 352.
Each apron conveyor comprises a belt 354 with slats 355 (Figure 4) on its under-surface drivable around an outer, hexagonal, roller 356 and an inner, octagonal, roller 358. Both the slats and the rollers generate con-tinuous vibration in the belt as a whole which separates the peas from the dirt, so that peas can roll down more easily. The upper roller 356 is mount-ed in bearing blocks 360 which are mounted on a bracket slidable in a frame 364.
A spring device 362 tensions the belt 354 by pulling upwardly the ; upper roller via the slidable bracket. The spring device 362 will also take up the shortening and lengthening of the centre distance between rollers 356 and 358 when the slats pass over the flat-faced rollers. The tension in the apron conveyor belt can be adjusted by means of a screw 363.
A framework 366 with down-turned and supporting members is mounted underneath the upper run of the apron conveyor belt, to ensure that the upper run does not sag unduly during the vibratory action. The lower roller 358 is pivotally mounted so that, as is apparent from Figure 3, the apron conveyor as a whole can be angularly adjusted to accommodate differing field condit-lons while the overlap distance "Z" remains unchanged. Thus no change in pea transfer action is encountered.
Angular adjustment is provided by screwed struts 370 (one on each side of the apron conveyor) each pivotally mounted at its lower end on a ~ bracket 372 connected to support structure 373 of the apron, through a ball '~ and socket or "knuckle" joint 376. This joint 376 enables the bracket 374 to be fixed relative to the structure 373.
As the whole apron assembl~ of belt 354, rollers 356 and 358, , .
~ 1(;~89313 support 366 and drive (as explained hereafter) is mounted on the frame 373, it is only necessary to turn the screws 370 to effect a simple and fast angular adjustment, without disturbing the physical relationship of each part one to another.
Drive to the apron 350 is effected through a sprocket transmission 380 from an hydraulic motor (not shown). The motor is mounted on the fixed frame 364 by means of an adjustable support. The motor is located directly beneath the roller 356 such that the roller movement, due to the slats pass-ing the rollers, does not affect the chain transmission lengthwise. The motor shaft is referenced 382.
I The lower run of the apron conveyor belt is cleaned before receiv-ing new product and dirt. This is effected by a powered spiral brush 388 (see Figure 4) which turns in the opposite sense to the movement of the owner ~ run. Drive to the brush is by a chain transmission from the hydraulic motor s also drivlng the apron conveyor itself.
Although the harvester described and claimed is primarily intended 1 for harvesting peas, other crops can be harvested which require separation ~ of parts durLng operatLo=.
,~ .
,:1 .1 .
~,2~2 :~ - -6-, :.. . . : . ~
:' '
2525364, filed May 12, 1976.
This invention relates to pea-harvesters incorporating apparatus for cleaning crops.
Pea harvesters have been developed which act substantially in the same manner as comblne harvesters for grain crops that is the valuable part of the plant is separated from the discard part of the plant and the useful part of the crop is delivered to a store or to a factory in a relatively clean condition.
From the standpoint of achieving high value it is particularly desirable that the useful crop delivered to a store or to a factory should be as clean as possible and thus it has been proposed to incorporate in pea harvesters cleaning arrangements which reduce the amount of dirt, leaves and trash at the end of the cycle of operation of the machine.
Clearly, for efficiency of operation, in this respect, it is desir-able that immediately the pea plants have been threshed as much dirt and unwanted plant parts should be removed immediately after the threshing stage.
Further, it is desirable that this cleaning stage which may not be the only ; one, should be capable of accommodating different harvesting conditions.
According to the present invention there is provided a pea-harves-; ter comprising a threshing device and two inclined, vibratory, apron con-veyors disposed to receive peas and trash from the threshing device, one said apron conveyor having a lower end portion overlying a lower end portion of :
the other conveyor and both conveyors being drivable in opposite senses so that, in operation, their upper runs move outwardly away from one another.
~; Apparatus for cleaning crops embodying the invention will now bedescribed, by way of example, with reference to the accompanying diagrammatic drawings, in which:
q~
~: :
~9313 Figure 1 is a side elevation, showing an outline of the integers of one embodiment cleaning apparatus of a harvesting machine in accordance with the invention;
Figure 2 is a vertical section at the rear axle of the machine of Figure 1, certain parts being shown in alternative positions;
Figure 3 is an end elevation showing cleaning apron conveyors of the cleaning apparatus of the harvester of Figures 1 and 2 disposed below a threshing drum of the machine; and Figure 4 is a perspective view of a part of one of the conveyors of Figure 3.
One embodiment of pea-harvesting machine in accordance with the invention will now be described, in general outline, with reference to :
Figure 1. The harvester is self-propelled and the various integers or units are supported on a frame (parts only of which are illustrated) on pairs of wheels 100, 102. The wheels 100 serve to drive the machine through a trans-mission (not shown) coupled to a single power source (not shown). The machine is controlled from the driving position indicated generally at platform 106.
~ Turning now to the operative parts of the pea harvesting machine as i such, the machine includes a pick-up reel 110 which extends across the whole width of the machine and at least a certain distance beyond the wider of the wheel tracks, the reel being supported for pivotal motion about an axis i extending longitudinaily of the machine at 113 on a beam or other pick-up .
- levelling frame 112. The reel is also supported for rotation in bearingQ
mounted on the frame 112.
Rearwardly of the reel 110 there is provided an inclined, first ~, conveyor 130 having a width substantially equal to the wldth of the reel and inclined at an angle of approximately 30 to the horizontal. The upper, rear, ~ end of the first, longitudinally-extending, conveyor 130 overlies two trans-: j :i ~ -2-; ~ . - . - ; - -. .. ~
. , . , ,' ' ' ' :: .. , ' ; : :
~ 39313 versely-extending in-feed (second) conveyors 180, 182 each of which has an upper run inclined upwardly towards the centre-line of the machine. The second conveyors 180, 182 are driven so that their upper runs are moving inwardly, that is, towards the centre-line of the machine. The inner ends are spaced from one another and overlie a longitudinally-extending, third, inclined conveyor 200 which is arranged for operation with the upper run moving rearwardly, as is the first longitudinal conveyor 130. The conveyor 200 is substantially narrower than the conveyor 130 and is pivotally mounted at both ends.
The rear end of the conveyor 200 overlies and is spaced a short distance only from a lower end portion of a longitudinally-extending, elevator conveyor 250 which has a substantially greater angle of inclination than the conveyor 200. The conveyor 250 has a width substantially the same as the conveyor 200 and the upper end terminates just short of the inlet of a threshing drum 300 which is preferably constructed in accordance with our copending British Application No. 21475/72 (Serial No. 1,396,931). The longitudinally-extending, elevator, conveyor has a casing which serves to ensure that the vines, pea pods and other material do not escape laterally as they are conveyed to the drum 300.
Since the drum 300 does not form part of the present invention and has been fully described in the co-pending British Application 21475/72 refer-red to above, substantially no further details of this construction will be given but it is necessary to state that the drum has a casing which is per-! forate so that separated peas may fall through onto cleaning apron conveyors 350, 352 which serve to provide an initial or first cleaning stage for the separated peas and extend along the whole length of the drum.
The apron conveyors 350, 352, to be described in detail herein-after, overlie a horizontal, longitudinally-extending, pea-carrying conveyor . . ~ , , . . .: . . - :
, .. ~ , , ~ . . ' . :
1~89313 400, an upper run 402 of which is driven in the forwards direction. The conveyor includes rollers 404, 406. A scraper device, not shown, may act against the conveyor at the roller 404. Adjacent the forward end of the upper run and the forward roller 404, ducting 420 is provided which encloses a lower run 422 of a bucket elevator conveyor 450 and has an opening 424 which serves as an air intake. The ducting is connected with a fan 426 having an outlet opening 428. The fan serves to draw off dust and other trash and return it to the field being harvested. This arrangement forms a second cleaning stage.
The upper end of the bucket elevator 450 discharges onto a horizon-tal, podder, conveyor 500 the upper run of which is arranged to be driven in the forwards direction in relation to the harvester as a whole and deliver peas and any remaining dirt or other extraneous matter to an upper run of a horizontal podder chain 550 which acts as a moving sieve and also forms part of the upper boundary of a main hopper 600. The upper run of the chain 550 , also travels in the forwards direction. In order to remove any remaining dirt, ducting 552 is provided above the upper run of the chain 550 and is connected to the inlet of a fan 554, the outlet of which is connected to downwardly-extending ducting 556. Any unthreshed pods or debris remain on ~ 20 the upper run of the chain 550 and do not fall into the hopper. Such pods - and debris will fall into ducting 558 which lies forwardly of a vertical run of the chain 550 and will be returned to the in-feed conveyors 180, 182 for re-cycling. This arrangement forms a third cleaning stage.
The apron conveyors 350, 352 will now be described in greater detail with reference to the remaining Figures.
s The apron conveyors 350, 352 are mounted below the threshing drum ~, 300, one of the aprons, 350, having a lower end portion which overlies a ; lower end portion of the other apron 352. Since the construction of both , :
~i,,,,,, :
.~: . : : : . .
.. . ~ - , . ' .
:. .: :
;, : . . .
apron conveyors is in substance the same, similar reference numerals will be given in the drawings with the addition of a prime to the parts apertaining to the conveyor 352.
Each apron conveyor comprises a belt 354 with slats 355 (Figure 4) on its under-surface drivable around an outer, hexagonal, roller 356 and an inner, octagonal, roller 358. Both the slats and the rollers generate con-tinuous vibration in the belt as a whole which separates the peas from the dirt, so that peas can roll down more easily. The upper roller 356 is mount-ed in bearing blocks 360 which are mounted on a bracket slidable in a frame 364.
A spring device 362 tensions the belt 354 by pulling upwardly the ; upper roller via the slidable bracket. The spring device 362 will also take up the shortening and lengthening of the centre distance between rollers 356 and 358 when the slats pass over the flat-faced rollers. The tension in the apron conveyor belt can be adjusted by means of a screw 363.
A framework 366 with down-turned and supporting members is mounted underneath the upper run of the apron conveyor belt, to ensure that the upper run does not sag unduly during the vibratory action. The lower roller 358 is pivotally mounted so that, as is apparent from Figure 3, the apron conveyor as a whole can be angularly adjusted to accommodate differing field condit-lons while the overlap distance "Z" remains unchanged. Thus no change in pea transfer action is encountered.
Angular adjustment is provided by screwed struts 370 (one on each side of the apron conveyor) each pivotally mounted at its lower end on a ~ bracket 372 connected to support structure 373 of the apron, through a ball '~ and socket or "knuckle" joint 376. This joint 376 enables the bracket 374 to be fixed relative to the structure 373.
As the whole apron assembl~ of belt 354, rollers 356 and 358, , .
~ 1(;~89313 support 366 and drive (as explained hereafter) is mounted on the frame 373, it is only necessary to turn the screws 370 to effect a simple and fast angular adjustment, without disturbing the physical relationship of each part one to another.
Drive to the apron 350 is effected through a sprocket transmission 380 from an hydraulic motor (not shown). The motor is mounted on the fixed frame 364 by means of an adjustable support. The motor is located directly beneath the roller 356 such that the roller movement, due to the slats pass-ing the rollers, does not affect the chain transmission lengthwise. The motor shaft is referenced 382.
I The lower run of the apron conveyor belt is cleaned before receiv-ing new product and dirt. This is effected by a powered spiral brush 388 (see Figure 4) which turns in the opposite sense to the movement of the owner ~ run. Drive to the brush is by a chain transmission from the hydraulic motor s also drivlng the apron conveyor itself.
Although the harvester described and claimed is primarily intended 1 for harvesting peas, other crops can be harvested which require separation ~ of parts durLng operatLo=.
,~ .
,:1 .1 .
~,2~2 :~ - -6-, :.. . . : . ~
:' '
Claims (9)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A pea-harvester comprising a threshing device and two inclined, vibratory, apron conveyors disposed to receive peas and trash from the thresh-ing device, one said apron conveyor having a lower end portion overlying a lower end portion of the other conveyor and both conveyors being drivable in opposite senses so that, in operation, their upper runs move outwardly away from one another.
2. A harvester according to claim 1, comprising for each apron con-veyor, strut means for adjusting the angle of inclination of that conveyor.
3. A harvester according to claim 1 wherein the apron conveyors are arranged to discharge peas onto a longitudinal conveyor with an upper run movable towards the front of the harvester.
4. A harvester according to claim 1 comprising means for cleaning the return run of each apron conveyor.
5. A harvester according to claim 4 wherein the cleaning means is a driven rotary brush with bristles arranged in spiral formation.
6. A harvester according to any one of claims 2 to 4 wherein the over-lap of the end portions of the apron conveyors is constant irrespective of the angular adjustment of each apron conveyor.
7. A harvester according to any one of claims 2 to 4 wherein the strut means is the sole means for adjusting the inclination of the respective conveyors.
8. A harvester according to claim 1 wherein the apron conveyors are mounted on rollers extending longitudinally of the harvester, the laterally outer roller of each apron conveyor being of hexagonal cross-section and the laterally inner roller of each apron conveyor being of octagonal cross-sec-tion.
9. A harvester according to claim 8, comprising resilient means accommodating stretching action on the belts as they pass over the hexagonal and octagonal rollers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA340,466A CA1089313A (en) | 1975-06-13 | 1979-11-23 | Pea harvesters |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB25310/75A GB1555321A (en) | 1975-06-13 | 1975-06-13 | Pea harvesters |
| GB25310/75 | 1975-06-13 | ||
| CA252,364A CA1072410A (en) | 1975-06-13 | 1976-05-12 | Harvesters |
| CA340,466A CA1089313A (en) | 1975-06-13 | 1979-11-23 | Pea harvesters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1089313A true CA1089313A (en) | 1980-11-11 |
Family
ID=27164469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA340,466A Expired CA1089313A (en) | 1975-06-13 | 1979-11-23 | Pea harvesters |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1089313A (en) |
-
1979
- 1979-11-23 CA CA340,466A patent/CA1089313A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |