US 4,085,571 A · Resilient mounting for agricultural machinery attachment

Abstract

The invention relates to agricultural machinery having resiliently mounted attachments which should follow the ground contour closely when in an operative position. The agricultural machine comprises a base structure; an attachment pivotally mounted by pivot means thereto at one end thereof, and resilient weight compensation means extending upwardly from a fixation means on the base structure on one side of the pivot means to a fixation means on the attachment located above and on the other side of the pivot means for floatingly maintaining the attachment in contact with the ground contour when in an operative position. Independent lifting means are mounted pivotally on the base structure below the pivot means and comprising at least one arm extending beneath the attachment for lifting the latter from the operative position to a transport position.

Claims14

Dependent claims

An agricultural machine adapted to move in a field and process field crops, comprising:

a base structure,
an attachment extending from one end of the base structure for receiving crop material from the field and for conveying it to the base structure,
pivot means on said one end of the base structure for pivotally mounting the attachment thereon, the attachment being movable between operative and transport positions,
resilient means attached at one end to the attachment at a location above the pivot means and at the other end to the base structure for resiliently compensating the weight of the attachment and for floatingly maintaining the attachment in contact with the ground contour when in an operative position, and,
independent lifting means pivotally mounted on the base structure at said one end and below the pivot means and reaching beneath the attachment for lifting the attachment from the operative position to a transport position.

2 more elements

In an agricultural machine which is adapted to move in a field and to process field crops and having a base structure, an attachment pivotally mounted by pivot means on the base structure at one end thereof and extending from that end and resilient weight compensation means attached at one end to the attachment and at the other end to the base structure for floatingly maintaining the attachment in contact with the ground contour when in an operative position, the improvement comprising:

independent lifting means pivotally mounted on the base structure at said one end thereof below the pivotal mounting of the attachment thereof and reaching beneath the attachment, and actuable power motor means mounted at one end on the base structure and coupled at the other end to the lifting means for selectively lifting the attachment from an operative position to a transport position.

In an agricultural machine which is adapted to move in a field and to process field crops and having a base structure, an attachment pivotally mounted by pivot means on the base structure at one end thereof and extending from that end, and resilient weight compensation means attached at one end to the attachment and at the other end to the base structure for floatingly maintaining the attachment in contact with the ground contours when in an operative position, the improvement comprising:

at least one lifting arm pivotally mounted on the base structure at said one end and extending from that end and beneath the attachment,
a further arm attached to said one arm and extending generally opposite thereto,
a hydraulic cylinder of the single-acting type with a piston and mounted at one end to the base structure,
first spring means extending the base structure and the piston for urging the piston to the retracted position when not actuated,
one direction coupling means mounted between the cylinder and said further arm for upon actuation of the hydraulic cylinder pivoting said further arm and said one arm, for lifting the attachment from an operative position to a raised position, and for enabling free movement of said further arm away from the cylinder when the hydraulic cylinder is not actuated, and
second spring means between the base structure and said further arm for urging said one arm to follow any upward movement of the attachment during operation of the weight compensation means and when the hydraulic cylinder is not actuated.

3 more elements

Dependencies are inferred from the claim text.

Resilient mounting for agricultural machinery attachment

Life of this patent

Resilient mounting for agricultural machinery attachment

Life of this patent

Abstract

Claims14