CA1205640A - Drive reversing mechanism for the header of a harvesting machine - Google Patents

Drive reversing mechanism for the header of a harvesting machine

Info

Publication number
CA1205640A
CA1205640A CA000441276A CA441276A CA1205640A CA 1205640 A CA1205640 A CA 1205640A CA 000441276 A CA000441276 A CA 000441276A CA 441276 A CA441276 A CA 441276A CA 1205640 A CA1205640 A CA 1205640A
Authority
CA
Canada
Prior art keywords
drive
gear wheel
invention according
chain
components
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
Application number
CA000441276A
Other languages
French (fr)
Inventor
Alphonse Bartkewich
James Nelson
Dale Charabin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LEE ETTE HOLDINGS Ltd
Original Assignee
LEE ETTE HOLDINGS Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LEE ETTE HOLDINGS Ltd filed Critical LEE ETTE HOLDINGS Ltd
Priority to CA000441276A priority Critical patent/CA1205640A/en
Application granted granted Critical
Publication of CA1205640A publication Critical patent/CA1205640A/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01DHARVESTING; MOWING
    • A01D69/00Driving mechanisms or parts thereof for harvesters or mowers
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01DHARVESTING; MOWING
    • A01D41/00Combines, i.e. harvesters or mowers combined with threshing devices
    • A01D41/12Details of combines
    • A01D41/14Mowing tables
    • A01D41/142Header drives

Abstract

DRIVE REVERSING MECHANISM FOR THE HEADER OF A HARVESTING
MACHINE

ABSTRACT OF THE DISCLOSURE
A reverse drive mechanism for the header drive of a combine harvester comprises a separate electric motor including an actuating solenoid which can be a con-ventional starter motor from a motor vehicle, a flanged bracket for supporting the motor and for supporting a shaft which carries a gear wheel driven by the motor.
A chain wheel connected to the gear wheel drives the feed components of the header through a chain connected to one of the drive shafts of the components.

Description

~S6~

DRIVE REVERSING MECHANISM FOR THE HEADER OF A HARVESTING
~IACHINE

BACKGROUND OF THE INVENTION
This invention relates to harvesting machines and particularly to a drive reversing mechanism for the header of a harvesting machine such as a combine har-vester.
Combine harvesters generally include a header which acts to pick up or cut the crop from the ground and to transport it into the threshing section within the combine. Various types of header can be provided including blades, drapers, auger screws, feed conveyors and various other arrangements, all of which are well known in the art and need not be described in detail.
The choice of the various co~lbinations of the components of the header can be made in dependence upon the type of crop to be harvested and whether it is standing or arranged in swaths.
In view of the cooperation of parts which is necessary to transport the crop, it sometimes occurs that an excess of material can cause a blockage or jam in the parts or components at various locations. This is par-ticularly applicable to the header auger which sometimes becomes blocked by an excessively large lump of the crop ~17~

~2~S~40 material which can wedge between the auger flights and the header floor. Arrangements can be made to discon-nect the drive in such circumstances, for exampleg by a clutch but this cannot occur until the blockage develops by which time it is often wedged into position within the components of the header.
Such an occurrence is fortunately fairly in-frequent but when it does occur it causes a major stop-page requiring considerable manual effort in removing the blockage and allowing the header to continue in nor-mal operation.
In view of the considerable work that is ne-cessary, proposals have been made for providing a drive to reverse the normal direction of the components to re-move the blockage back in the direction that it has en-tered the header. Such proposals for a reversing drive have, however, been relatively complicated and therefore fairly expensive making them an expensive option which often cannot be justified in strictly economical terms.
In addition, there are already in operation large num-bers of combines for which the option was not available or for which it was rejected in view of the excessive costs.

~2~564Q

SUMMAP~Y OF THE INVENTION
It is one object of the present invention~
therefore, to provide a drive reversing mechanism for the header of a combine or the harvesting machine which is simple and very economical and therefore can be at-tached relatively cheaply to a combine eithe.r as original equipment or as a retrofit for existing combines.
According to the invention, therefore, there is provided a harvesting machine comprising a header in-cluding drive means, components driven by said drivemeans in an operating directlon for collecting and trans-porting a harvested crop into the harvesting machine, and drive reversing means for driving said components in the opposite direction, said drive reversing means com-prising an electric motor having a drive pinion, bracket means mounting said electric motor on said harvesting machine, a gear wheel driven by said pinion, means com-municating drive from said gear wheel to said components to drive said components in the opposice direction, and means for disconnecting the drive from said electric motor to said components when said components are driven in the operating direction.
According to a second aspect of the invention, therefore, there is provided a drive reversing mechanism ~205~4~

for the header of a harvesting machine, the header in-cluding drive means, components driven by said drive means in an operating direction for collecting and trans-porting a harvested crop into the harvesting machine, the drive reversing means comprising an electric motor having a drive pinion, bracket means for mountin~ said electric motor on said harvesting machine, a gear wheel driven by said pinion, means for communicating drive from said gear wheel to said components and means for disconnecting the drive from said electric motor to said drive communicating means.
It is one advantage of the invention, there-fore, that the drive reversing mechanism comprises merely a simple separate additional electric motor which can simply be attached to the outside framework or housing of the combine and can be used as a separate power source when the drive to the components is halted following a blockage or jam. In order to manufacture the mechanism very cheaply, the electric motor can comprise a conven-tional starter motor and solenoid which can be switchedinto operation simply by energizing the solenoid to drive the pinion into driving contact with the gear wheel.
The dimensions of the gear wheel relative to a chain drive system communicating the drive from the ~L2q~

gear wheel to the components can be chosen to provide a suitable gear ratio whereby the starter motor can pro-vide sufficient torque to drive the components and to unwedge the blockage.
Conveniently, therefore, the drive mechanism can comprise a simple retrofit component comprising a bracket supporting the starter motor and a shaft for sup-porting the gear wheel and an attached chain wheel.
To provide a suitable safety feature, there may be included a device for detecting the movement of the components in the normal operating direction and for preventing operation of the electric motor until such components have fully halted.
With the foregoing in view, and other advanta-ges as wisll become apparent to those skilled in the art to which this invention relates as this specification proceeds, the invention is herein described by reference to the accompanying drawings forming a part hereof, which includes a description of the best mode known to the applicant and of the preferred typical embodiment of the principles of the present invention, in which:
DESCRIPTION OF THE DRAWINGS
Figure 1 is a schematic side elevational view of a header for a combine showing schematically the drive ~s~

reversing mechanism attached at a convenient point on the header.
Figure 2 is an isometric view of the drive re-versing mechanism separated from the combine.
In the drawings like characters of reference indicate corresponding parts in the different figures.
DETAILED DESCRIPTION
The header of a combine 10 is schematically indicated at 11 and is shown merely as one example of the type of header which could be used, although other types are well known to one skilled in the art.
The header comprises a pick-up belt 12, a draper 13~ a conveyor screw auger 14 and a feeder chain 15.
The components are mounted within a housing and are all of conventional form and therefore do not need detailed discussion.
Each of the components is mounted upon one or more shafts and is driven via th~t shaft from a chain drive system including chains 16, 17 and 18 which com-municate drive from a gear box 20 connecte~ to the PTOshaft of a tractor indicated at 21. The shaft 21 there-fore in normal working of the combine acts to drive the components of the header in a normal working direction as indicated by the various arrows whereby material is ~2~S640 picked up from a swath 22 and transported by the header into a threshing section of the combine which is not il-lustrated.
As explained previously, on infrequent occasions the header can become jammed or blocked by an excessive amount of crop material which acts to wedge generally ei-ther the screw 14 or the feeder chain 15 thus prevent-ing their further movement and acting to stall the com-bine. This can be taken up by a slipping clutch between the chain drive system 16 and the gear box 20 or by a main slipping clutch indicated at 23 between the PT0 21 and the gear box 20. In any event, the combine is stalled and no further material can be picked up or fed into the combine.
In the normal course of events, it is necessary for the operator to manually remove the blockage by pick-ing out the material a bit at a time and this can be a lengthy and dangerous action.
In accordance with the present invention the header is modified by the addition of an electric drive motor schematically indicated in Figure 1 at 24 which drives a chain drive system 25 through a gear wheel 26 and chain wheel 27.
These features are shown in more detail in ~Z1~56~

Figure 2 and it will be seen that the additional items added to the header comprise a bracket 30 formed from a first flat plate 31 and a second flat plate 32 at right angles thereto with an upstanding flange 33 supported on a lug 34 so that it stands up from the plate 3~, at a slight angle to the vertical. The flange 33 provides a plate 35 to which can be attached the mounting bracket 36 of the electric motor 24 by suitable mounting screws.
The electric motor 24 carries a solenoid 37 1~ and the motor 24 and solenoid 37 together are of the con-ventional starter motor arrangement for an automobile and for that reason can be obtained relatively cheaply as they are a mass produced item. The details of the electric motor are not shown but include a pinion 38 which is driven by the electric motor and which can en-gage the drive wheel 26 under the control of the sole-noid 37.
The plates 31 and 32 include suitable holes 39 by which chey can be attached to the housing o~ the header.
Th~ plate 32 supports a shaft 40 which extends outwardly therefrom Eor supporting on bearings 41 the drive wheel 26. The position of the shaft 40 is arranged such that the periphery of the drive wheel 26 can engage the pinion 38.

~Z~56~

g Attached to the outer surface of the drive wheel 26 is the chain wheel 27 which is therefore co-rotatable with the gear wheel 26 for communicating drive via the chain 25 to the shaft/of the feeder chain 15.
The motor 24 is arranged such that it acts to drive the gear wheel 26 in a direction to rotate the feeder chain in the opposite direction to its normal di-rection and via the chain couplings 17 and 18 also acts to drive the draper, pick-up belt, conveyor screw in the direction opposite to the normal direction.
A device schematically indicated at 42 is res-ponsive to the motion of the gear wheel 26 and is connec-ted in circuit with a switch 43 from a battery 44. The device 42 comprises a switch operated by the halting of the movement of the gear wheel 26 so that the switch 43 can only operate the motor 24 when the gear wheel 26 is stationary.
Thus, when a jam or blockage occurs, the com-bine will gradually or rapidly stall thus halting the
2~ header components and also the drive wheel 26. When this occurs, the operative can operate the switch 43 to acti-vate the solenoid 37 which starts the motor 24 and enga-ges the pinion 38 with the periphery of the gear wheel 26. The gear wheel 26, therefore, drives the header com-~s~

ponents in the reverse direction to remove the blockageand drive it back out to the pick-up belt. The opera-tive can then ensure that any increased amount oE crop is removed so as not to repeat the blockage.
It will be noted that the diameter of the gear wheels 26 and 271 are conside.ably greater than the dia-meter of the chain wheel 27 so as to provide suitable gear ratios so the motor 24 has sufficient torque to drive the components of the heater.
Since various modifications can be made in our invention as hereinabove described, and many appa-rently widely different embodiments of same made with-in the s?irit and scope of the claims without departing from such spirit and scope, it is intended that all matter contained in the accompanying specification shall be in-terpreted as illustrative only and not in a limiting sense.

Claims

CLAIMS:
(1) A harvesting machine comprising a header including drive means, components driven by said drive means in an operating direction for collecting and trans-porting a harvested crop into the harvesting machine, and drive reversing means for driving said components in the opposite direction, said drive reversing means comprising an electric motor having a drive pinion, bracket means mounting said electric motor on said har-vesting machine, a gear wheel driven by said pinion, means communicating drive from said gear wheel to said components to drive said components in the opposite di-rection, and means for disconnecting the drive from said electric motor to said components when said components are driven in the operating direction.
(2) The invention according to Claim 1 where-in the disconnecting means comprises a solenoid attached to the electric motor for moving the pinion into and out of mesh with the gear wheel.
(3) The invention according to Claim 2 where-in the electric motor and solenoid comprise a conven-tional starter motor for a vehicle.
(4) The invention according to Claim 1 wherein the bracket means includes a flange for sup-porting the motor and a shaft for rotatably supporting the gear wheel.
(5) The invention according to Claim 1 wherein the bracket includes a pair of flat plates arranged at right angles for engaging the outer surfaces of a housing of the harvesting machine.
(6) The invention according to Claim 1 wherein the bracket means includes a flange for sup-porting the motor and a shaft for rotatably supporting the gear wheel and wherein the bracket includes a pair of flat plates arranged at right angles for engaging the outer surfaces of a housing of the harvesting machine.
(7) The invention according to Claim 1 including a chain wheel attached to the gear wheel and a chain driven by said chain wheel for driving the com-ponents.
(8) The invention according to Claim 1 including a chain wheel attached to the gear wheel and a chain driven by said chain wheel for driving the com-ponents wherein the chain is arranged to drive a drive shaft of the drive means.
(9) The invention according to Claim 1 including a chain wheel attached to the gear wheel and a chain driven by said chain wheel for driving the com-nents wherein the gear wheel is larger in diameter than the chain wheel.
(10) The invention according to Claim 1 including means responsive to movement of said compo-nents in the operating direction for preventing connec-tion of the drive from said electric motor to said com-ponents.
(11) Drive reversing means for the header of a harvesting machine, the header including drive means, components driven by said drive means in an operating direction for collecting and transporting a harvested crop into the harvesting machine, the drive reversing means comprising an electric motor having a drive pinion, bracket means for mounting said electric motor on said harvesting machine, a gear wheel driven by said pinion, means for communicating drive from said gear wheel to said components and means for disconnecting the drive from said electric motor to said drive communicating means.
(12) The invention according to Claim 11 where-in the disconnecting means comprises a solenoid atached to the electric motor for moving the pinion into and out of mesh with the gear wheel.
(13) The invention according to Claim 12 wherein the electric motor and solenoid comprise a con-ventional starter motor for a vehicle.
(14) The invention according to Claim 11 wherein the bracket means includes a flange for supporting the motor and a shaft for rotatably support-ing the gear wheel.
(15) The invention according to Claim 11 wherein the bracket includes a pair of flat plates arranged at right angles for engaging the outer surfaces of a housing of the harvesting machine.
(16) The invention according to Claim 11 wherein the bracket means includes a flange for supporting the motor and a shaft for rotatably support-ing the gear wheel and wherein the bracket includes a pair of flat plates arranged at right angles for engaging the outer surfaces of a housing of the harvesting machine.
(17) The invention according to Claim 11 including a chain wheel attached to the gear wheel and a chain driven by said chain wheel for driving the components.
(18) The invention according to Claim 11 including a chain wheel attached to the gear wheel and a chain driven by said chain wheel for driving the components wherein the chain is arranged to drive a drive shaft of the drive means.
(19) The invention according to Claim 11 including a chain wheel attached to the gear wheel and a chain driven by said chain wheel for driving the components wherein the gear wheel is larger in dia-meter than the chain wheel.
(20) The invention according to Claim 11 including means responsive to movement of said components in the operating direction for preventing connection of the drive from said electric motor to said components.
CA000441276A 1983-11-16 1983-11-16 Drive reversing mechanism for the header of a harvesting machine Expired CA1205640A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000441276A CA1205640A (en) 1983-11-16 1983-11-16 Drive reversing mechanism for the header of a harvesting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000441276A CA1205640A (en) 1983-11-16 1983-11-16 Drive reversing mechanism for the header of a harvesting machine

Publications (1)

Publication Number Publication Date
CA1205640A true CA1205640A (en) 1986-06-10

Family

ID=4126537

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000441276A Expired CA1205640A (en) 1983-11-16 1983-11-16 Drive reversing mechanism for the header of a harvesting machine

Country Status (1)

Country Link
CA (1) CA1205640A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2708408A1 (en) * 1993-08-05 1995-02-10 Claas Ohg Agricultural harvester whose feeding device includes a reversible transmission system.
EP1854344A1 (en) * 2006-05-12 2007-11-14 CNH Belgium N.V. Reverse drive engaging mechanism for a feeder of an agricultural combine
EP2179642A1 (en) * 2008-09-19 2010-04-28 CLAAS Selbstfahrende Erntemaschinen GmbH Agricultural harvester

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2708408A1 (en) * 1993-08-05 1995-02-10 Claas Ohg Agricultural harvester whose feeding device includes a reversible transmission system.
BE1008437A3 (en) * 1993-08-05 1996-05-07 Claas Ohg Moissoneuse agricultural.
EP1854344A1 (en) * 2006-05-12 2007-11-14 CNH Belgium N.V. Reverse drive engaging mechanism for a feeder of an agricultural combine
EP2179642A1 (en) * 2008-09-19 2010-04-28 CLAAS Selbstfahrende Erntemaschinen GmbH Agricultural harvester

Similar Documents

Publication Publication Date Title
US6381932B1 (en) Harvesting machine
US20130219847A1 (en) Flail motor head attachment
DE2552805A1 (en) DEVICE FOR DETECTING FERROUS MATERIAL IN FIELDHAECKSLERN
CA1205640A (en) Drive reversing mechanism for the header of a harvesting machine
US2749696A (en) Header and feeder control for combines
CA1062476A (en) Forage harvester drive
JP2018164410A (en) Combine
CA2530169C (en) Drive for a crop picking head
US3442069A (en) Safety interlock mechanism for combine harvester
GB2035029A (en) Crop harvesting machines
JP3657739B2 (en) Combine
CN115380705B (en) Header system and harvester
JP3549058B2 (en) Combine
JP3517836B2 (en) Combine
JPH0627062Y2 (en) Combine work clutch
JP3412783B2 (en) Partition cover for self-propelled root vegetable harvester
JP2508973B2 (en) All culm type combine
JP2887389B2 (en) General-purpose combine harvester forward / reverse drive
JP2587496Y2 (en) Combine drainage transport drive mechanism
JP6619371B2 (en) Combine
JP2563916Y2 (en) General-purpose combine
JP3170267B2 (en) Work machine drive operation device
JP2007300894A (en) Reaping clutch mechanism
JP2000060276A (en) Safety transmission system for combine harvester
JPH11266653A (en) Whole culm-charging type combine harvester

Legal Events

Date Code Title Description
MKEX Expiry