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公开(公告)号：US10681865B2
公开(公告)日：2020-06-16
申请号：US15961485
申请日：2018-04-24
Applicant: MacDon Industries Ltd.
Inventor： James Thomas Dunn , Graham Michael Leverick , Russell George Lyons , Bruce Robert Shearer , Kyle Edward Boch
IPC: A01D41/14 , A01B63/00 , A01B63/108 , A01D41/127 , A01D41/12 , F15B11/08 , F15B13/044 , F15B21/14 , F15B1/02 , F15B11/10
Abstract: A header is supported by a pair of hydraulic float cylinders, where a float pressure to the cylinders is directly controlled by an electronic control supplying a variable control signal to a PPRR valve arrangement to maintain the float pressure at a predetermined value. At the set pressure a predetermined lifting force is provided to the header. A position sensor is used to generate an indication of movement and/or acceleration and/or velocity. The electronic control is arranged, in response to changes in the sensor signal, to temporarily change the control signal to vary the lifting force and thus change the dynamic response of the hydraulic float cylinder. A lift force greater than that required to lift the header can be provided by a lift cylinder and can be opposed in a controlled manner to apply a controlled downforce by the back of the same cylinder or by a separate component.
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公开(公告)号：US20180153102A1
公开(公告)日：2018-06-07
申请号：US15837840
申请日：2017-12-11
Applicant: MacDon Industries Ltd.
Inventor： James Thomas Dunn , Graham Michael Leverick , Russell George Lyons , Bruce Robert Shearer , Kyle Edward Boch
IPC: A01D41/14 , A01B63/00 , A01B63/108 , A01D41/127
CPC classification number: A01D41/141 , A01B63/008 , A01B63/108 , A01D41/1243 , A01D41/127 , A01D41/145 , F15B1/024 , F15B11/10 , F15B11/16 , F15B13/06 , F15B21/14 , F15B2211/20546 , F15B2211/30565 , F15B2211/3059 , F15B2211/5151 , F15B2211/526 , F15B2211/625 , F15B2211/6309 , F15B2211/6313 , F15B2211/6336 , F15B2211/6653 , F15B2211/7051 , F15B2211/7128 , F15B2211/761
Abstract: A header is supported by a pair of hydraulic float cylinders, where a float pressure to the cylinders is directly controlled by an electronic control supplying a variable control signal to a PPRR valve arrangement to maintain the float pressure at a predetermined value. At the set pressure a predetermined lifting force is provided to the header. A position sensor is used to generate an indication of movement and/or acceleration and/or velocity. The electronic control is arranged, in response to changes in the sensor signal, to temporarily change the control signal to vary the lifting force and thus change the dynamic response of the hydraulic float cylinder. A lift force greater than that required to lift the header can be provided by a lift cylinder and can be opposed in a controlled manner to apply a controlled downforce by the back of the same cylinder or by a separate component.
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公开(公告)号：US20210307233A1
公开(公告)日：2021-10-07
申请号：US16837630
申请日：2020-04-01
Applicant: MacDon Industries Ltd.
Inventor： Russell George Lyons , Glen Frank Beamish
Abstract: A header for a crop harvesting machine includes front and rear wheel arrangements that pivot about respective upright axis between a field orientation and a perpendicular transport orientation, while having respective suspensions arrangements movable between different suspended heights. A biasing spring provides lift assist to carry weight of the wheel arrangement during adjustment of the suspension elevation while being isolated from the suspension once set at any one elevation. The front wheel arrangement includes an anti-rotation latch that locks the front wheel in the field orientation automatically upon disconnection of a hitch arm. A second wheel of the rear wheel arrangement can be held in a raised position relative to a first wheel in a field orientation. Load bearing surfaces between the suspended rear wheels and the header frame abut one another when latching to the header frame to isolate the suspension from the header frame in the transport orientation.
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公开(公告)号：US09968033B2
公开(公告)日：2018-05-15
申请号：US15188468
申请日：2016-06-21
Applicant: MacDon Industries Ltd.
IPC: A01D41/127 , A01D41/14 , A01B63/00 , A01B63/10 , F15B11/08 , F15B13/04 , F15B13/044
CPC classification number: A01D41/127 , A01B63/008 , A01B63/10 , A01D41/141 , F15B11/08 , F15B13/0401 , F15B13/044 , F15B2211/426 , F15B2211/526
Abstract: In a crop harvesting machine there is provided a pair of hydraulic float cylinders for a header relative to a vehicle, where a float pressure to the cylinders is directly controlled by an electronic control supplying a variable control signal to a PPRR valve arrangement to maintain the float pressure at a predetermined value. At the set pressure a predetermined lifting force is provided to the header. A position sensor is used to generate an indication of movement and/or acceleration. The electronic control is arranged, in response to changes in the sensor signal, to temporarily change the control signal to vary the lifting force and thus change the dynamic response of the hydraulic float cylinder. In order to reduce static friction so that the system can react quickly, an arrangement is provided for causing relative reciprocating movement in an alternating wave pattern between the piston and cylinder.
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公开(公告)号：US20240276903A1
公开(公告)日：2024-08-22
申请号：US18595270
申请日：2024-03-04
Applicant: MACDON INDUSTRIES LTD
Inventor： Russell George Lyons , Glen Frank Beamish
CPC classification number: A01B73/005 , A01B63/006 , A01D41/145 , A01D75/002
Abstract: A header for a crop harvesting machine includes front and rear wheel arrangements that pivot about respective upright axis between a field orientation and a perpendicular transport orientation, while having respective suspensions arrangements movable between different suspended heights. A biasing spring provides lift assist to carry weight of the wheel arrangement during adjustment of the suspension elevation while being isolated from the suspension once set at any one elevation. The front wheel arrangement includes an anti-rotation latch that locks the front wheel in the field orientation automatically upon disconnection of a hitch arm. A second wheel of the rear wheel arrangement can be held in a raised position relative to a first wheel in a field orientation. Load bearing surfaces between the suspended rear wheels and the header frame abut one another when latching to the header frame to isolate the suspension from the header frame in the transport orientation.
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Patent Agency Ranking
公开(公告)号：US11849675B2
公开(公告)日：2023-12-26
申请号：US16632134
申请日：2018-07-19
Applicant: MacDon Industries Ltd.
Inventor： Russell George Lyons , Bruce Robert Shearer
CPC classification number: A01D61/02 , A01D61/006 , A01D34/14
Abstract: A header for a crop harvester includes side drapers having a front edge adjacent the cutter bar and carrying crop to a discharge end roller at a center feed draper. A support arrangement carries the rear end of the discharge end roller to define an operating position in which an axis of the discharge end roller is at an angle to an axis of the outer end roller of the side draper with the rear end of the discharge end roller at a height below a height of the rear end of the outer end roller. This provides a main portion of the belt that lies in a common plane defined by an intermediate guide member and the outer end roller and a smaller portion of the draper belt between the guide member and the rear end of the discharge end roller which is twisted downwardly from the common plane.
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公开(公告)号：US11606903B2
公开(公告)日：2023-03-21
申请号：US16837636
申请日：2020-04-01
Applicant: MacDon Industries Ltd.
Inventor： Russell George Lyons , Daniel Victor Kaethler
IPC: A01D41/14 , A01D34/04 , A01B73/00 , B60G5/00 , B60P3/06 , A01D43/06 , A01D75/00 , A01B73/06 , B62D7/18 , A01B69/00 , B62D13/00 , B62D13/04
Abstract: A header for a crop harvesting machine includes front and rear wheel arrangements that pivot about respective upright axis between a field orientation and a perpendicular transport orientation, while having respective suspensions arrangements movable between different suspended heights. A biasing spring provides lift assist to carry weight of the wheel arrangement during adjustment of the suspension elevation while being isolated from the suspension once set at any one elevation. The front wheel arrangement includes an anti-rotation latch that locks the front wheel in the field orientation automatically upon disconnection of a hitch arm. A second wheel of the rear wheel arrangement can be held in a raised position relative to a first wheel in a field orientation. Load bearing surfaces between the suspended rear wheels and the header frame abut one another when latching to the header frame to isolate the suspension from the header frame in the transport orientation.
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公开(公告)号：US20200077585A1
公开(公告)日：2020-03-12
申请号：US15747859
申请日：2017-06-19
Applicant: MacDon Industries Ltd.
Inventor： Jann Peter Garbald , James Thomas Dunn , Graham Michael Leverick , Russell George Lyons , Bruce Robert Shearer , Neil Gordon Barnett
IPC: A01D41/14 , A01B63/00 , A01B63/108 , A01D41/127
Abstract: In a crop harvesting machine there is provided a pair of hydraulic float cylinders or springs for a header such as a rotary mower relative to a self-propelled vehicle, where a float spring force is controlled to provide a predetermined lifting force is provided to the header. The spring force is varied in response to detection of ground speed to decrease the lifting force at higher ground speeds. A position sensor is used to generate an indication of movement and/or acceleration. The electronic control is arranged, in response to changes in the sensor signal, to temporarily change the control signal to vary the lifting force and thus change the dynamic response of the hydraulic float cylinder. In order to reduce static friction so that the system can react quickly, an arrangement is provided for causing relative reciprocating movement in an alternating wave pattern between the piston and cylinder.
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公开(公告)号：US20170359954A1
公开(公告)日：2017-12-21
申请号：US15188468
申请日：2016-06-21
Applicant: MacDon Industries Ltd.
IPC: A01D41/127 , F15B11/08 , F15B13/044 , A01B63/00 , F15B13/04 , A01B63/10
CPC classification number: A01D41/127 , A01B63/008 , A01B63/10 , A01D41/141 , F15B11/08 , F15B13/0401 , F15B13/044 , F15B2211/426 , F15B2211/526
Abstract: In a crop harvesting machine there is provided a pair of hydraulic float cylinders for a header relative to a vehicle, where a float pressure to the cylinders is directly controlled by an electronic control supplying a variable control signal to a PPRR valve arrangement to maintain the float pressure at a predetermined value. At the set pressure a predetermined lifting force is provided to the header. A position sensor is used to generate an indication of movement and/or acceleration. The electronic control is arranged, in response to changes in the sensor signal, to temporarily change the control signal to vary the lifting force and thus change the dynamic response of the hydraulic float cylinder. In order to reduce static friction so that the system can react quickly, an arrangement is provided for causing relative reciprocating movement in an alternating wave pattern between the piston and cylinder.
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公开(公告)号：US20210307247A1
公开(公告)日：2021-10-07
申请号：US16837636
申请日：2020-04-01
Applicant: MacDon Industries Ltd.
Inventor： Russell George Lyons , Daniel Victor Kaethler
Abstract: A header for a crop harvesting machine includes front and rear wheel arrangements that pivot about respective upright axis between a field orientation and a perpendicular transport orientation, while having respective suspensions arrangements movable between different suspended heights. A biasing spring provides lift assist to carry weight of the wheel arrangement during adjustment of the suspension elevation while being isolated from the suspension once set at any one elevation. The front wheel arrangement includes an anti-rotation latch that locks the front wheel in the field orientation automatically upon disconnection of a hitch arm. A second wheel of the rear wheel arrangement can be held in a raised position relative to a first wheel in a field orientation. Load bearing surfaces between the suspended rear wheels and the header frame abut one another when latching to the header frame to isolate the suspension from the header frame in the transport orientation.
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