Reversible plough

Patent metadata

Field	Value
Publication number	US-9456538-B2
Application number	US-201314045861-A
Country	US
Kind code	B2
Filing date	Oct 4, 2013
Priority date	Oct 4, 2013
Publication date	Oct 4, 2016
Grant date	Oct 4, 2016

Abstract

A reversible plough with a frame for a 3-point hitch attachment comprises a frame with lower first and second and an upper third attachment point for attachment to a 3-point hitch. A vertical pivot axle supports a plough tool carrier for pivotable movement. The upper third attachment point is located on a vertical pivot plate in a first upper pivot point. A second lower pivot point of said plate is connected to a transversel pivot axis on the frame and a third upper pivot point of said plate is connected to a control link. When the upper link of the 3-point hitch moves backwards, then the plate pivots and moves the control link backwards as well. Said control link extends towards the rear end portion of the frame and is connected to a link arrangement pivotally supported by the vertical pivot axle and connected to the plough tool carrier.

First claim

What is claimed is:

1. A reversible plough comprising:
a frame having a front end portion and a rear end portion, with the front end portion including a horizontal, transverse front frame support having top and bottom sides and the frame further having an upright support fixed to, and projecting upwardly from the top side of the front frame support at a location located centrally between opposite first and second ends of the front frame support;
a lower first 3-point hitch attachment point and a lower second 3 -point hitch attachment point respectively fixed to first and second locations of the front frame support spaced equally from said upright support for attachment to a 3-point hitch;
a vertical pivot plate assembly carrying an upper third 3-point hitch attachment point, together with an upper rear pivot point spaced rearward of the third 3-point hitch attachment point and a lower pivot point, with the lower pivot point being attached to a lower location of said upright support and establishing a horizontal transverse pivot axis about which said vertical pivot plate assembly is adapted to pivot forwardly in response to the frame being lifted by a tractor 3-point hitch and is adapted to pivot rearwardly in response to the frame being lowered by a tractor 3-point hitch;
a vertical pivot axle being fixed on the rear end portion of said frame;
an elongate plough tool carrier having front and rear ends and being pivotally mounted, medially the front and rear ends, on said vertical pivot axle for horizontal pivotal movement between a first work position, wherein the front end of the plough tool carrier is adjacent the first end of said transverse front frame support, and a second work position, wherein the front end of the plough tool carrier is adjacent the second end of said transverse front frame support;
a link arrangement being pivotally mounted on said vertical pivot axle above said plough tool carrier; and
a control link having a first end pivotally coupled to the upper rear pivotal connection of said vertical pivot plate assembly and having a second end slidably connected to the link arrangement which is pivotally supported by said vertical pivot axle and connected to said plough tool carrier.

2. The reversible plough of claim 1 , wherein said link arrangement further comprises:
a bushing received on said vertical pivot axle for pivotable movement about said pivot axle;
a control plate rigidly connected to said bushing, wherein said control plat comprises a guide slot, with said control link including a fastener at a rear end thereof which is connected to the control plate for sliding in said guide slot; and
a control arm rigidly connected to said bushing, wherein said control arm is connected to said plough tool carrier.

3. The reversible plough of claim 2 , wherein said guide slot further comprises at last two slot ends.

4. The reversible plough of claim 1 , further comprising:
at last two plough tools;
at last two pivot supports respectively connected to said at last two plough tools and being mounted to said carrier for pivoting about respective upright axes, with at last on of the two pivot supports being spaced forward of the vertical pivot axle and serving to couple said control arm to said plough tool carrier; and
at least on pivot arm connected to each of the at least two pivot supports, wherein a connecting link connects said at last two pivot supports together to simultaneously transfer force from said vertical pivot axle to said two pivot supports.

5. The reversible plough of claim 4 , further comprising
a gauge wheel and an additional pivot support supporting said gauge wheel to said carrier for pivoting about an additional upright axis.

6. The reversible plough of claim 1 , further comprising an
arcuate frame portion configured at a radius about said vertical pivot axle and the front end of said plough tool carrier being supported for movement along said arcuate frame portion.

7. The reversible plough of claim 6 , further comprising a latch mechanism being releasably engaged with the plough tool carrier for securing the plough tool carrier in one of the first and second work positions and the latch mechanism being selectively operable to release the plough tool carrier when pivotal movement of said plough tool carrier to another of said first and second work positions is desired.

8. The reversible plough of claim 7 , further comprising:
said latch mechanism including a control lever connected to the front frame support; and a blocking linkage located on the bottom side of the front frame support and connected to the control lever for being operated between engaged and released positions, wherein said blocking linkage extends to both ends of said arcuate frame portion and is normally in the engaged position wherein it engages the front end of said plough tool carrier when the plow tool carrier is in a selected one of the first and second work positions.

9. The reversible plough of claim 8 , further comprising:
said blocking linkage including first and second angular links, with each of the angular links being mounted medially between inner and outer ends therof to the front frame support of the front end portion of said frame for pivoting about respective first and second center pivots and the inner ends of the first and second angular links being pivotally connected to each other and the outer ends of the first and second angular links being configured for engaging the plough carrier tool and blocking movement of said plough carrier tool from said selected one of the first and second work positions.

10. The reversible plough of claim 9 , wherein said control lever is rigidly connected to the first center pivot, with the first center pivot being fixed to said first angular link, said control lever and first and second angular links being configured such that movement of the control lever from a normal position to an operating position will cause the first angular link and second angular link to be respectively pivoted in opposite first and second directions about the first and second center pivots thereby moving the outer ends of the first and second angular links from their respective blocking positions to respective released positions; and a return spring being connected to the first and second angular links for acting, once the control lever is released from its operating position, to simultaneously return the outer ends of the angular links to their respective blocking positions and return the control lever to its normal position.

11. A reversible plough comprising:
a frame having a front end portion and a rear end portion, with the front end portion including a transverse front frame support having opposite first and second ends and a top side and a bottom side;
a lower first attachment point and a lower second attachment point mounted to the bottom side of the transverse front frame support for attachment to a 3-point hitch;
an upright mast fixed to the top side of the transverse front frame support at a location medially of the first and second ends of the front frame support;
a vertical pivot plate assembly having a lower end pivotally connected to a lower location of said mast and defining a horizontal transverse pivot axis about which the vertical pivot plate assembly may pivot fore-and-aft;
an upper third attachment point located at an upper front location of the vertical pivot plate assembly for attachment to said 3-point hitch;
a vertical pivot axle fixed on the rear end portion of said frame;
a plough tool carrier pivotally mounted on said vertical pivot axle, at a location medially of front and rear ends of the plough tool carrier, for movemen

Assignees

• Deere & Co

Inventors

• Olivares Marco Antonio
• Garcia Cesar
• Gonzalez Mairon

Classifications

• A01B3/28 Primary

  Alternating ploughs · CPC title

• A01B5/08 Primary

  Alternating ploughs · CPC title

• A01B5/14

  Alternating ploughs · CPC title