CA2596620C - Step rotor - Google Patents
Step rotor Download PDFInfo
- Publication number
- CA2596620C CA2596620C CA2596620A CA2596620A CA2596620C CA 2596620 C CA2596620 C CA 2596620C CA 2596620 A CA2596620 A CA 2596620A CA 2596620 A CA2596620 A CA 2596620A CA 2596620 C CA2596620 C CA 2596620C
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- Prior art keywords
- rotor
- threshing
- adjustable
- threshing elements
- drum
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F7/00—Threshing apparatus
- A01F7/02—Threshing apparatus with rotating tools
- A01F7/06—Threshing apparatus with rotating tools with axles in line with the feeding direction ; Axial threshing machines
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/18—Threshing devices
- A01F12/20—Threshing cylinders with ribs
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
- Threshing Machine Elements (AREA)
Abstract
A means for improving the combine's ability to harvest grain more efficiently and economically by processing the crop faster through the thrashing and separating system.
Description
STEP ROTOR
FIELD OF THE INVENTION
The present invention relates to the rotor in the thrashing section of an agricultural combine and, more particularly, to the improvement of the method in which crop travels through the rotor - thrashing section of the combine.
BACKGROUND OF THE INVENTION
Axial flow combines are known in prior art, as is their thrashing mechanism. The combine removes crop from the field and processes it by separating the grain or seed from the stock or leafy portion. The efficiency of how this action takes place has been the subject of numerous prior art solutions. The goal is to ever increase the efficiency and speed of which this thrashing or separating process occurs in. Past inventions have been limited as to the speed of which this process takes place, the power requirement needed to make it take place and the damage that occurs to the seed or grain in the process. In addition un-thrashed grains can exit the rear of the combine resulting in an economic loss to the farmer. In some cases the thrashing mechanism is so inefficient that it will plug up with crop materials resulting in the ceasing of harvesting operations and possible damage to the combine.
Prior art shows numerous methods to solve all or part of these problems. Moiarty in US patent number 6,468,152 B2 shows a rotor that has a variable gap in it. Tanis in US Patent number 6,325,714 B1 provides for a variety of sizes and separate longitudinal alignments to reduce the rolling of the crop in an effort to reduce plugging and make thrashing easier. Tanis in US patent 5,413,531 provides
FIELD OF THE INVENTION
The present invention relates to the rotor in the thrashing section of an agricultural combine and, more particularly, to the improvement of the method in which crop travels through the rotor - thrashing section of the combine.
BACKGROUND OF THE INVENTION
Axial flow combines are known in prior art, as is their thrashing mechanism. The combine removes crop from the field and processes it by separating the grain or seed from the stock or leafy portion. The efficiency of how this action takes place has been the subject of numerous prior art solutions. The goal is to ever increase the efficiency and speed of which this thrashing or separating process occurs in. Past inventions have been limited as to the speed of which this process takes place, the power requirement needed to make it take place and the damage that occurs to the seed or grain in the process. In addition un-thrashed grains can exit the rear of the combine resulting in an economic loss to the farmer. In some cases the thrashing mechanism is so inefficient that it will plug up with crop materials resulting in the ceasing of harvesting operations and possible damage to the combine.
Prior art shows numerous methods to solve all or part of these problems. Moiarty in US patent number 6,468,152 B2 shows a rotor that has a variable gap in it. Tanis in US Patent number 6,325,714 B1 provides for a variety of sizes and separate longitudinal alignments to reduce the rolling of the crop in an effort to reduce plugging and make thrashing easier. Tanis in US patent 5,413,531 provides
2 in an earlier patent a means to adjust the position of the rasp bars in an effort to adjust them to each crop or crop condition encountered. Braunhardt in US
patent number 5,356,338 provides for a rotor with two separate sections revolving at different speeds. Francis in US patent 5,192,246 provides for a rotor having a forward impeller to control and move the crop material into the rotor. Gorden in US
patent number 5,125,871 changes the standard checker board pattern of rasp bars into a checkerboard helical pattern of rows that increase the rasp bar size and coverage compared to prior art mechanisms. And Dunn, in US patent number 5,035,675, provides for a plurality of mounting lugs so that rasp bars may be adjusted into various positions and numbers.
Other patents relating to combine harvesters include United States patent number 6,884,161 by Moriarty and United States patent number 6,719,626 by Federowich.
All of the prior art solutions attempt to provide for various improvements in the thrashing or separation of seeds and grains from their stocks. Yet none of them accomplish the desired ability to reduce crop damage, increase harvest speed, reduce fuel consumption and decrease crop loss and damage. Each of the previous prior art solutions has been replaced by a newer improved version of a rotor.
It is therefore desirable to increase the harvest rate.
It is also desirableto decrease fuel consumption during harvest.
It is also desirableto increase the value of the crop harvested.
It is also desirableto decrease damage and loss of crop.
patent number 5,356,338 provides for a rotor with two separate sections revolving at different speeds. Francis in US patent 5,192,246 provides for a rotor having a forward impeller to control and move the crop material into the rotor. Gorden in US
patent number 5,125,871 changes the standard checker board pattern of rasp bars into a checkerboard helical pattern of rows that increase the rasp bar size and coverage compared to prior art mechanisms. And Dunn, in US patent number 5,035,675, provides for a plurality of mounting lugs so that rasp bars may be adjusted into various positions and numbers.
Other patents relating to combine harvesters include United States patent number 6,884,161 by Moriarty and United States patent number 6,719,626 by Federowich.
All of the prior art solutions attempt to provide for various improvements in the thrashing or separation of seeds and grains from their stocks. Yet none of them accomplish the desired ability to reduce crop damage, increase harvest speed, reduce fuel consumption and decrease crop loss and damage. Each of the previous prior art solutions has been replaced by a newer improved version of a rotor.
It is therefore desirable to increase the harvest rate.
It is also desirableto decrease fuel consumption during harvest.
It is also desirableto increase the value of the crop harvested.
It is also desirableto decrease damage and loss of crop.
3 It is also desirableto decrease damage and reduce downtime due to plugged thrashing systems.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a means for improving the combine's ability to harvest grain more efficiently and economically.
According to another aspect of the invention, there is provided a rotor for a combine harvester, said rotor comprising:
an elongated drum;
an array of mounting lugs mounted circumferentially to the elongated drum;
a plurality of adjustable separator bars each mounted to a respective one of the mounting lugs, each adjustable separator bar being adjustable in position relative to the respective one of the mounting lugs in order to set the adjustable separator bar at any selected one of a number of different angles relative to said respective one of the mounting lugs.
In one embodiment, there are provided mating teeth defined on each adjustable separator bar and the respective one of the mounting lugs, and arranged to lock the adjustable separator bar to said respective one of the mounting lugs at said any selected one of the number of different angles.
In one embodiment, a respective connection between each adjustable separator bar and the respective one of the mounting lugs comprises a pivot bolt passing through a base of said adjustable separator bar to define a pivot axis about which said adjustable separator bar is pivotal relative said respective one of the
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a means for improving the combine's ability to harvest grain more efficiently and economically.
According to another aspect of the invention, there is provided a rotor for a combine harvester, said rotor comprising:
an elongated drum;
an array of mounting lugs mounted circumferentially to the elongated drum;
a plurality of adjustable separator bars each mounted to a respective one of the mounting lugs, each adjustable separator bar being adjustable in position relative to the respective one of the mounting lugs in order to set the adjustable separator bar at any selected one of a number of different angles relative to said respective one of the mounting lugs.
In one embodiment, there are provided mating teeth defined on each adjustable separator bar and the respective one of the mounting lugs, and arranged to lock the adjustable separator bar to said respective one of the mounting lugs at said any selected one of the number of different angles.
In one embodiment, a respective connection between each adjustable separator bar and the respective one of the mounting lugs comprises a pivot bolt passing through a base of said adjustable separator bar to define a pivot axis about which said adjustable separator bar is pivotal relative said respective one of the
4 mounting lugs, and an attachment bolt passing through a slot-shaped opening in the base that accommodates pivotal motion of the adjustable separator relative to said respective one of the mounting lugs about said pivot axis.
In one embodiment, said slot-shaped opening is curved about said pivotal axis.
According to another aspect of the invention, there is provided a separator assembly for a rotor of a combine harvester comprising, said assembly comprising:
a mounting lug for mounting on the elongated drum;
an adjustable separator bar mounted or mountable to the mounting lug and adjustable in position relative thereto in order to set the adjustable separator bar at any selected one of a number of different angles relative to said mounting lug.
According to another aspect of the invention, there is provided a rotor for a combine harvester, said rotor comprising an elongated drum having separating and threshing sections of different diameters and a step that transitions between said different diameters of the separating and threshing sections, wherein said separating section is of greater diameter than said threshing section.
In one embodiment, the step is frustoconically shaped.
In one embodiment, an array of separator bars is mounted circumferentially on the drum at the separating section thereof and an array of threshing elements is mounted circumferentially on the drum at the threshing section thereof.
According to another aspect of the invention, there is provided a rotor for a combine harvester, said rotor comprising:
an elongated drum;
an array of threshing elements mounted circumferentially on the elongated drum and each comprising fins lying at an acute angle relative to a longitudinal axis of the drum;
wherein the threshing elements are arranged in an order in which the acute
In one embodiment, said slot-shaped opening is curved about said pivotal axis.
According to another aspect of the invention, there is provided a separator assembly for a rotor of a combine harvester comprising, said assembly comprising:
a mounting lug for mounting on the elongated drum;
an adjustable separator bar mounted or mountable to the mounting lug and adjustable in position relative thereto in order to set the adjustable separator bar at any selected one of a number of different angles relative to said mounting lug.
According to another aspect of the invention, there is provided a rotor for a combine harvester, said rotor comprising an elongated drum having separating and threshing sections of different diameters and a step that transitions between said different diameters of the separating and threshing sections, wherein said separating section is of greater diameter than said threshing section.
In one embodiment, the step is frustoconically shaped.
In one embodiment, an array of separator bars is mounted circumferentially on the drum at the separating section thereof and an array of threshing elements is mounted circumferentially on the drum at the threshing section thereof.
According to another aspect of the invention, there is provided a rotor for a combine harvester, said rotor comprising:
an elongated drum;
an array of threshing elements mounted circumferentially on the elongated drum and each comprising fins lying at an acute angle relative to a longitudinal axis of the drum;
wherein the threshing elements are arranged in an order in which the acute
5 angles of the fins of said threshing elements decrease in a direction moving axially along said elongated drum.
In one embodiment, said threshing elements comprise rasp bars.
In one embodiment, said threshing elements include first and second sets of threshing elements for which the acute angles differ by 10-degrees.
In one embodiment, a third set of threshing elements in which the acute angle differs from the second set of threshing elements by 10-degrees, and differs from the first of threshing elements by 20-degrees.
In one embodiment, said threshing elements include two sets of threshing elements in which the acute angles are 70-degrees and 60-degrees respectively.
In one embodiment, said threshing elements include a third set of threshing elements in which the acute angle is 50-degrees.
In one embodiment, said threshing elements include two sets of threshing elements in which the acute angles are 70-degrees and 50-degrees respectively.
BRIEF DESCRIPTION OF THE DRAWINGS
A complete understanding of the present invention may be obtained by reference to the subsequent detailed description in conjunction with the accompanying drawings, in which:
Figure 1 is a right elevation view of a combine or agricultural harvester;
In one embodiment, said threshing elements comprise rasp bars.
In one embodiment, said threshing elements include first and second sets of threshing elements for which the acute angles differ by 10-degrees.
In one embodiment, a third set of threshing elements in which the acute angle differs from the second set of threshing elements by 10-degrees, and differs from the first of threshing elements by 20-degrees.
In one embodiment, said threshing elements include two sets of threshing elements in which the acute angles are 70-degrees and 60-degrees respectively.
In one embodiment, said threshing elements include a third set of threshing elements in which the acute angle is 50-degrees.
In one embodiment, said threshing elements include two sets of threshing elements in which the acute angles are 70-degrees and 50-degrees respectively.
BRIEF DESCRIPTION OF THE DRAWINGS
A complete understanding of the present invention may be obtained by reference to the subsequent detailed description in conjunction with the accompanying drawings, in which:
Figure 1 is a right elevation view of a combine or agricultural harvester;
6 Figure 2 is a right view of a step rotor depicting the step, progressive rasp bars of various angles and the adjustable separating bars;
Figure 3 is a top detail view of progressive rasp bars depicting the various angles of the teeth;
Figure 4 is a top detail view of adjustable separator bars depicting the adjustable angle device; and Figure 5 is an end section view of adjustable separator bars depicting the bolt adjustment for change of angle and feed rate.
For purposes of clarity and brevity, like elements and components will bear the same designations and numbering throughout the Figures.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In Figure 1, there is shown a self-propelled axial-flow-type-combine 10 shown in its entirety. The combine is of the general type shown and described in prior art and is herein referred to as an "Axial-Flow-Type Combine."
The illustrated embodiment of the combine includes a frame with vertical side walls supported by a pair of laterally spaced forward drive wheels 16 and a pair of rear steering wheels 18. The combine may further include an operator's station and cab or a location for remote control of the machine, a crop-gathering header assembly and a crop feeder assembly. An axial-flow step rotor 12 assembly is supported by and extends in a fore-and-aft direction on the frame.
The step rotor 12 assembly is comprised of a stationary elongated and generally cylindrical step-rotor-separator-grate 21 and a step rotor 12 mounted in the grate about an axis of rotation. The step rotor 12 is driven by an engine (not shown)
Figure 3 is a top detail view of progressive rasp bars depicting the various angles of the teeth;
Figure 4 is a top detail view of adjustable separator bars depicting the adjustable angle device; and Figure 5 is an end section view of adjustable separator bars depicting the bolt adjustment for change of angle and feed rate.
For purposes of clarity and brevity, like elements and components will bear the same designations and numbering throughout the Figures.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In Figure 1, there is shown a self-propelled axial-flow-type-combine 10 shown in its entirety. The combine is of the general type shown and described in prior art and is herein referred to as an "Axial-Flow-Type Combine."
The illustrated embodiment of the combine includes a frame with vertical side walls supported by a pair of laterally spaced forward drive wheels 16 and a pair of rear steering wheels 18. The combine may further include an operator's station and cab or a location for remote control of the machine, a crop-gathering header assembly and a crop feeder assembly. An axial-flow step rotor 12 assembly is supported by and extends in a fore-and-aft direction on the frame.
The step rotor 12 assembly is comprised of a stationary elongated and generally cylindrical step-rotor-separator-grate 21 and a step rotor 12 mounted in the grate about an axis of rotation. The step rotor 12 is driven by an engine (not shown)
7 which also provides power for propelling the combine and driving its components.
Apart from the step rotor 12 assembly, other components of the combine are generally conventional and are not described in detail herein.
The stationary step-rotor-separator-grate 21 includes a step 30 section which leads in a downstream direction from a generally cylindrical threshing region to a generally cylindrical separating region. The step 30 section is configured with a frusto-conical shape and is designed for endwise reception of crop material from the crop feeder assembly. The step 30 section defines a crop-receiving forward end and an aft end which is joined to the generally cylindrical separating region. As illustrated, the step 30 section has an increasing cross-sectional area in a downstream direction extending between the forward and aft ends thereof. In the illustrated embodiment, the step 30 section may be regarded as a rearward extension of the threshing region and its conical characteristics feature a slant angle relative to the rotational axis of the step rotor 12.
The step rotor 12 includes an impeller section, a threshing section and a separating section. The impeller section is arranged within and cooperates with the threshing section of the step-rotor-separator-grate 21 in moving crop material rearwardly through the step rotor 12 assembly. The threshing section on the step rotor 12 combines with the threshing region on the step-rotor-separator-grate 21 to define a threshing area on the step rotor 12 assembly wherein crop material is processed as it travels rearwardly through the step rotor 12 assembly. Grain threshed from the crop material in the threshing area escapes from the step-rotor-separator-grate 21 through one or more concaves 20. The separating section on the step rotor
Apart from the step rotor 12 assembly, other components of the combine are generally conventional and are not described in detail herein.
The stationary step-rotor-separator-grate 21 includes a step 30 section which leads in a downstream direction from a generally cylindrical threshing region to a generally cylindrical separating region. The step 30 section is configured with a frusto-conical shape and is designed for endwise reception of crop material from the crop feeder assembly. The step 30 section defines a crop-receiving forward end and an aft end which is joined to the generally cylindrical separating region. As illustrated, the step 30 section has an increasing cross-sectional area in a downstream direction extending between the forward and aft ends thereof. In the illustrated embodiment, the step 30 section may be regarded as a rearward extension of the threshing region and its conical characteristics feature a slant angle relative to the rotational axis of the step rotor 12.
The step rotor 12 includes an impeller section, a threshing section and a separating section. The impeller section is arranged within and cooperates with the threshing section of the step-rotor-separator-grate 21 in moving crop material rearwardly through the step rotor 12 assembly. The threshing section on the step rotor 12 combines with the threshing region on the step-rotor-separator-grate 21 to define a threshing area on the step rotor 12 assembly wherein crop material is processed as it travels rearwardly through the step rotor 12 assembly. Grain threshed from the crop material in the threshing area escapes from the step-rotor-separator-grate 21 through one or more concaves 20. The separating section on the step rotor
8 12 cooperates with the separating region on the step-rotor-separator-grate 21 to define a separating area wherein crop material is further processed as it travels rearwardly. Straw and other waste material is discharged toward the rear end of the step rotor 12 assembly, while grain separated from the crop material in the separating area of the step rotor 12 assembly escapes from the step-rotor-separator-grate through openings provided in the separating region of the step-rotor-separator-grate 21.
Material is further processed through the walker assembly 22 where straw or similar crop materials are "walked" toward the rear of the combine across the cleaning shoe 24 where air from the blower 26 is introduced to aid in further cleaning and separation of the seed or grain from the straw or leafy materials of the crop.
Cleaned and sorted grains or seeds are then conveyed to a holding or grain storage tank 28 for transport and offloading.
Figure 2 depicts a rotor with a step section of a generally frusto-conical shape for use in a rotary threshing combine and which is readily adjustable to provide a great variety of threshing patterns to suit the particular crops and conditions of use.
The rotor drum has a plurality of mounting lugs affixed thereto in an array that includes longitudinal, circumferential, and helical rows. A variety of differently angled progressive rasp bars 32 or threshing elements, each designed for efficient operation under particular conditions, is provided and said elements are selectively and interchangeably and releasably connectable to the mounting lugs. Adjustable separator bars 38 are affixed with a pivot bolt on one end and an angle adjustment bolt 44 through the pivot slot 40 situated over a set of locking teeth 42 for positive
Material is further processed through the walker assembly 22 where straw or similar crop materials are "walked" toward the rear of the combine across the cleaning shoe 24 where air from the blower 26 is introduced to aid in further cleaning and separation of the seed or grain from the straw or leafy materials of the crop.
Cleaned and sorted grains or seeds are then conveyed to a holding or grain storage tank 28 for transport and offloading.
Figure 2 depicts a rotor with a step section of a generally frusto-conical shape for use in a rotary threshing combine and which is readily adjustable to provide a great variety of threshing patterns to suit the particular crops and conditions of use.
The rotor drum has a plurality of mounting lugs affixed thereto in an array that includes longitudinal, circumferential, and helical rows. A variety of differently angled progressive rasp bars 32 or threshing elements, each designed for efficient operation under particular conditions, is provided and said elements are selectively and interchangeably and releasably connectable to the mounting lugs. Adjustable separator bars 38 are affixed with a pivot bolt on one end and an angle adjustment bolt 44 through the pivot slot 40 situated over a set of locking teeth 42 for positive
9 engagement with the corresponding locking teeth 42 of the mounting lugs, and are designed for efficient operation under particular conditions. Said separator bars are selectively and interchangeably adjustable up to 10 degrees from center either direction and releasably connectable to the mounting lugs.
The Step rotor 12 comprises an elongated drum having a cylindrical wall, a rear end wall, and a front end wall and features a frusto-conically shaped step 30 that increases the diameter of the drum in the aft section. Projecting from the front end wall are a mounting shaft and a plurality of vanes or impeller blades which serve to convey the severed crop material rearwardly to be acted upon by the outer surface of the rotor.
A plurality of mounting lugs are rigidly secured, as by welding, to the cylindrical wall. As seen in FIGS. 3 and 4 of the drawings, in a preferred embodiment of the invention each progressive rasp bar mounting lug comprises an open, member having a front or leading wall , sidewalls and, and a rear or trailing wall, and said walls taper upwardly toward an integral top wall. Separator bar mounting lugs are similar to progressive rasp bar mounting lugs except that the top wall is provided with a set of ridges for positive locking of the mating element, feature a connector-receiving hole and feature a rear wall that is formed to permit entry of an angle adjustment bolt 44 into the interior of the lug.
Mounting lugs are secured to the cylindrical wall to provide an array of helical rows, circumferential rows and longitudinal rows over the entire surface of said wall. The preferred arrangement of the lugs is illustrated. It will there be seen that the lugs form helical rows, circumferential rows, and staggered longitudinal rows.
Thresher elements of various forms and shapes are selectively connectable to the mounting lugs as required. In FIG. 3, there are shown progressive rasp bars 32 having a serrated top wall formed with connector-receiving holes therein.
Progressive rasp bars 32 have a generally flat lower portion and are each of 5 complementary configuration with the lug. The progressive rasp bars 32 thus may be connected in contour-accommodating relationship to a mounting lug. A second preferred embodiment has an opening that provides access for a suitable tool for the connection or removal of such connectors as bolts, washers and nuts, with the lug.
Adjustable separator bars 38 have a general ridged lower portion
The Step rotor 12 comprises an elongated drum having a cylindrical wall, a rear end wall, and a front end wall and features a frusto-conically shaped step 30 that increases the diameter of the drum in the aft section. Projecting from the front end wall are a mounting shaft and a plurality of vanes or impeller blades which serve to convey the severed crop material rearwardly to be acted upon by the outer surface of the rotor.
A plurality of mounting lugs are rigidly secured, as by welding, to the cylindrical wall. As seen in FIGS. 3 and 4 of the drawings, in a preferred embodiment of the invention each progressive rasp bar mounting lug comprises an open, member having a front or leading wall , sidewalls and, and a rear or trailing wall, and said walls taper upwardly toward an integral top wall. Separator bar mounting lugs are similar to progressive rasp bar mounting lugs except that the top wall is provided with a set of ridges for positive locking of the mating element, feature a connector-receiving hole and feature a rear wall that is formed to permit entry of an angle adjustment bolt 44 into the interior of the lug.
Mounting lugs are secured to the cylindrical wall to provide an array of helical rows, circumferential rows and longitudinal rows over the entire surface of said wall. The preferred arrangement of the lugs is illustrated. It will there be seen that the lugs form helical rows, circumferential rows, and staggered longitudinal rows.
Thresher elements of various forms and shapes are selectively connectable to the mounting lugs as required. In FIG. 3, there are shown progressive rasp bars 32 having a serrated top wall formed with connector-receiving holes therein.
Progressive rasp bars 32 have a generally flat lower portion and are each of 5 complementary configuration with the lug. The progressive rasp bars 32 thus may be connected in contour-accommodating relationship to a mounting lug. A second preferred embodiment has an opening that provides access for a suitable tool for the connection or removal of such connectors as bolts, washers and nuts, with the lug.
Adjustable separator bars 38 have a general ridged lower portion
10 extruding from a generally flat base for interlocking with the separator bar mounting lugs. Separator bars are adjustable to the angle at which the crop will intersect it, up to 10 degrees in either direction from center.
Figure 3 illustrates various preferred rasp bar teeth 34 or fin angles per one embodiment the invention, the general flat rectangular shape and the rasp bar mounting holes 36. In a preferred embodiment there exists a progressive use of rasp bar teeth 34 angles as shown. The crop will enter the rotor meeting 70 degree angle rasp bar fins first, and then will pass to rasp bar teeth 34 of a 60 degree angle that speeds up the flow of the crop, which finally reaches the 50 degree rasp bar teeth 34 angle before being passed to the separating bars.
As illustrated in Figure 3 a preferred embodiment uses a variety of angles of rasp bar teeth 34, yet this is not to be construed as he only combination, but rather an example of how three different rasp bar teeth 34 angles can be used for one type of crop condition.
Figure 3 illustrates various preferred rasp bar teeth 34 or fin angles per one embodiment the invention, the general flat rectangular shape and the rasp bar mounting holes 36. In a preferred embodiment there exists a progressive use of rasp bar teeth 34 angles as shown. The crop will enter the rotor meeting 70 degree angle rasp bar fins first, and then will pass to rasp bar teeth 34 of a 60 degree angle that speeds up the flow of the crop, which finally reaches the 50 degree rasp bar teeth 34 angle before being passed to the separating bars.
As illustrated in Figure 3 a preferred embodiment uses a variety of angles of rasp bar teeth 34, yet this is not to be construed as he only combination, but rather an example of how three different rasp bar teeth 34 angles can be used for one type of crop condition.
11 In another embodiment of the present invention two different angles of rasp bar teeth 34 would be used to facilitate faster and more efficient movement of the crop through the threshing mechanism.
Figure 4 illustrates a preferred embodiment of the adjustable separator bars 38 invention. In a preferred embodiment there exists a selectable angle of the adjustable separator bars 38 in accordance with the angle of the approaching crop.
The angle of the adjustable separating bars can be arranged to each crop condition through the use of the angle adjustment bolt 44 and movement of the adjustable separator bars 38 through the provided range of the pivot slot 40. The pivot bolt and the adjustable separator bar pivot bolt 46 securable and removably attach the adjustable separator bar to the rotor mounting lugs.
As the crop enters the separating section of the step rotor 12, the separator bar angled face 39 forces the crop against the separator grate, thereby causing a separation of crop into seed or grain from leafy material. The rate at which the crop is forced against the separator grate is determined by the angle of the adjustable separator bar. The angle may be advanced or retarded according to crop harvesting conditions by positioning the adjustable separator bar in accordance with the most efficient angle.
Figure 5 illustrates a preferred embodiment of the adjustable separator bars 38 invention. In a preferred embodiment there exists a selectable angle of the adjustable separator bars 38 in accordance with the angle of the approaching crop.
The angle of the adjustable separating bars can be arranged to suit each crop condition through the use of the angle adjustment bolt 44 and movement of the
Figure 4 illustrates a preferred embodiment of the adjustable separator bars 38 invention. In a preferred embodiment there exists a selectable angle of the adjustable separator bars 38 in accordance with the angle of the approaching crop.
The angle of the adjustable separating bars can be arranged to each crop condition through the use of the angle adjustment bolt 44 and movement of the adjustable separator bars 38 through the provided range of the pivot slot 40. The pivot bolt and the adjustable separator bar pivot bolt 46 securable and removably attach the adjustable separator bar to the rotor mounting lugs.
As the crop enters the separating section of the step rotor 12, the separator bar angled face 39 forces the crop against the separator grate, thereby causing a separation of crop into seed or grain from leafy material. The rate at which the crop is forced against the separator grate is determined by the angle of the adjustable separator bar. The angle may be advanced or retarded according to crop harvesting conditions by positioning the adjustable separator bar in accordance with the most efficient angle.
Figure 5 illustrates a preferred embodiment of the adjustable separator bars 38 invention. In a preferred embodiment there exists a selectable angle of the adjustable separator bars 38 in accordance with the angle of the approaching crop.
The angle of the adjustable separating bars can be arranged to suit each crop condition through the use of the angle adjustment bolt 44 and movement of the
12 adjustable separator bars 38 through the range of the pivot slot 40, with the separator bar then being securely held in place through the interlocking of the separator bar rotor mount locking teeth 50 and the locking teeth 42. The pivot bolt and the adjustable separator bar pivot bolt 46 securable and removably attach the adjustable separator bar to the separator bar mounting lugs 48 through a threaded hole 52.
As the crop enters the separating section of the step rotor 12, the separator bar angled face 39 forces the crop against the separator grate causing a separation of crop into seed or grain from, leafy material. The rate at which the crop is forced against the separator grate is determined by the angle of the adjustable separator bar. The angle may be advanced or retarded according to crop harvesting conditions by positioning the adjustable separator bar in accordance with the most efficient angle.
Since other modifications and changes varied to fit particular operating requirements and environments will be apparent to those skilled in the art, the invention is not considered limited to the example chosen for purposes of disclosure, and covers all changes and modifications which do not constitute departures from the true scope of this invention.
Having thus described the invention, what is desired to be protected by Letters Patent is presented in the subsequently appended claims.
As the crop enters the separating section of the step rotor 12, the separator bar angled face 39 forces the crop against the separator grate causing a separation of crop into seed or grain from, leafy material. The rate at which the crop is forced against the separator grate is determined by the angle of the adjustable separator bar. The angle may be advanced or retarded according to crop harvesting conditions by positioning the adjustable separator bar in accordance with the most efficient angle.
Since other modifications and changes varied to fit particular operating requirements and environments will be apparent to those skilled in the art, the invention is not considered limited to the example chosen for purposes of disclosure, and covers all changes and modifications which do not constitute departures from the true scope of this invention.
Having thus described the invention, what is desired to be protected by Letters Patent is presented in the subsequently appended claims.
Claims (25)
1. A rotor for a combine harvester, said rotor comprising:
an elongated drum;
an array of mounting lugs mounted circumferentially to the elongated drum;
a plurality of adjustable separator bars each mounted to a respective one of the mounting lugs, each adjustable separator bar being adjustable in position relative to the respective one of the mounting lugs in order to set the adjustable separator bar at any selected one of a number of different angles relative to said respective one of the mounting lugs.
an elongated drum;
an array of mounting lugs mounted circumferentially to the elongated drum;
a plurality of adjustable separator bars each mounted to a respective one of the mounting lugs, each adjustable separator bar being adjustable in position relative to the respective one of the mounting lugs in order to set the adjustable separator bar at any selected one of a number of different angles relative to said respective one of the mounting lugs.
2. The rotor of claim 1 comprising mating teeth defined on each adjustable separator bar and the respective one of the mounting lugs, and arranged to lock the adjustable separator bar to said respective one of the mounting lugs at said any selected one of the number of different angles.
3. The rotor of claim 1 or 2 wherein a respective connection between each adjustable separator bar and the respective one of the mounting lugs comprises a pivot bolt passing through a base of said adjustable separator bar to define a pivot axis about which said adjustable separator bar is pivotal relative said respective one of the mounting lugs, and an attachment bolt passing through a slot-shaped opening in the base that accommodates pivotal motion of the adjustable separator relative to said respective one of the mounting lugs about said pivot axis.
4. The rotor of claim 3 wherein said slot-shaped opening is curved about said pivotal axis.
5. The rotor of any one of claims 1 to 4 wherein the drum comprises separating and threshing sections of different diameters, and a step that transitions between said different diameters of the separating and threshing sections, the adjustable separator bars being mounted at the separator section and the separator section being greater in diameter than said threshing section.
6. The rotor of claim 5 wherein the step is frustoconically shaped.
7. The rotor of claim 5 or 6 wherein the threshing section comprises an array of threshing elements mounted thereon that each comprise fins lying at an acute angle relative to a longitudinal axis of the drum, and the threshing elements are arranged in an order in which the acute angles of the fins of said threshing elements decrease in a direction moving axially along said threshing section toward said separating section.
8. The rotor of claim 5 or 6 wherein the threshing elements comprise rasp bars.
9. The rotor of claim any one of claims 1 to 4 wherein the drum comprises a separating section at which the adjustable separator bars are mounted, and a threshing section at which an array of threshing elements are mounted, each threshing element comprising fins lying at an acute angle relative to a longitudinal axis of the drum, and the threshing elements being arranged in an order in which the acute angles of the fins of said threshing elements decrease in a direction moving axially along said threshing section toward said separating section.
10. A separator assembly for a rotor of a combine harvester comprising, said assembly comprising:
a mounting lug for mounting on the elongated drum;
an adjustable separator bar mounted or mountable to the mounting lug and adjustable in position relative thereto in order to set the adjustable separator bar at any selected one of a number of different angles relative to said mounting lug.
a mounting lug for mounting on the elongated drum;
an adjustable separator bar mounted or mountable to the mounting lug and adjustable in position relative thereto in order to set the adjustable separator bar at any selected one of a number of different angles relative to said mounting lug.
11. The assembly of claim 10 comprising mating teeth defined on the adjustable separator bar and the mounting lug and arranged to lock the adjustable separator bar to said mounting lug at said any selected one of the number of different angles.
12. The rotor of claim 10 or 11 wherein a connection between said adjustable separator bar and the mounting lug comprises a pivot bolt passing through a base of said adjustable separator bar to define a pivot axis about which said adjustable separator bar is pivotal relative to said mounting lug, and an attachment bolt passing through a slot-shaped opening in the base that accommodates pivotal motion of said adjustable separator bar relative to said mounting lug.
13. The rotor of claim 12 wherein said slot-shaped opening is curved about said pivotal axis.
14. A rotor for a combine harvester, said rotor comprising an elongated drum having separating and threshing sections of different diameters and a step that transitions between said different diameters of the separating and threshing sections, wherein said separating section is of greater diameter than said threshing section.
15. The rotor of claim 14 wherein the step is frustoconically shaped.
16. The rotor of claim 14 or 15 comprising an array of separator bars mounted circumferentially on the drum at the separating section thereof and an array of threshing elements mounted circumferentially on the drum at the threshing section thereof.
17. The rotor of claim 16 wherein said threshing elements comprise rasp bars.
18. The rotor of claim 16 or 17 wherein the threshing elements each comprise fins lying at an acute angle relative to a longitudinal axis of the drum, and the threshing elements are arranged in an order in which the acute angles of the fins of said threshing elements decrease in a direction moving axially along said threshing section toward said separating section
19. A rotor for a combine harvester, said rotor comprising:
an elongated drum;
an array of threshing elements mounted circumferentially on the elongated drum and each comprising fins lying at an acute angle relative to a longitudinal axis of the drum;
wherein the threshing elements are arranged in an order in which the acute angles of the fins of said threshing elements decrease in a direction moving axially along said elongated drum.
an elongated drum;
an array of threshing elements mounted circumferentially on the elongated drum and each comprising fins lying at an acute angle relative to a longitudinal axis of the drum;
wherein the threshing elements are arranged in an order in which the acute angles of the fins of said threshing elements decrease in a direction moving axially along said elongated drum.
20. The rotor of claim 16 wherein said threshing elements comprise rasp bars.
21. The rotor of any one of claims 7, 9 and 18-20 wherein said threshing elements include first and second sets of threshing elements for which the acute angles differ by 10-degrees.
22. The rotor of claim 21 comprising a third set of threshing elements in which the acute angle differs from the second set of threshing elements by 10-degrees, and differs from the first of threshing elements by 20-degrees.
23. The rotor of any one of claims 7, 9 and 18-20 wherein said threshing elements include two sets of threshing elements in which the acute angles are 70-degrees and 60-degrees respectively.
24. The rotor of claim 23 wherein said threshing elements include a third set of threshing elements in which the acute angle is 50-degrees.
25. The rotor of any one of claims 7, 9 and 18-20 wherein said threshing elements include two sets of threshing elements in which the acute angles are 70-degrees and 50-degrees respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2596620A CA2596620C (en) | 2007-08-01 | 2007-08-01 | Step rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2596620A CA2596620C (en) | 2007-08-01 | 2007-08-01 | Step rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2596620A1 CA2596620A1 (en) | 2009-02-01 |
| CA2596620C true CA2596620C (en) | 2016-01-12 |
Family
ID=40339636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2596620A Active CA2596620C (en) | 2007-08-01 | 2007-08-01 | Step rotor |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2596620C (en) |
-
2007
- 2007-08-01 CA CA2596620A patent/CA2596620C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA2596620A1 (en) | 2009-02-01 |
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| EEER | Examination request |