Trailer device for an agricultural vehicle

Patent metadata

Field	Value
Publication number	US-11337355-B2
Application number	US-202016832349-A
Country	US
Kind code	B2
Filing date	Mar 27, 2020
Priority date	Mar 29, 2019
Publication date	May 24, 2022
Grant date	May 24, 2022

Abstract

A trailer device for an agricultural vehicle includes a frame part and a guide part longitudinally, displaceably mounted in the frame part. The guide part includes a coupling element provided on an end face. The frame part is pivoted by a lifting apparatus for raising and lowering the coupling element relative to a base frame for attaching to a load-bearing vehicle structure. The device includes at least one spring element arranged between the base frame and the frame part such that the spring element exerts a pretensioning force on the frame part for assisting the raising of the coupling element.

First claim

The invention claimed is:

1. A trailer device for an agricultural vehicle, comprising:
a frame part; and
a guide part longitudinally, displaceably mounted in the frame part, the guide part having a coupling element provided on an end face;
wherein the frame part is pivoted by a lifting apparatus for raising and lowering the coupling element relative to a base frame for attaching to a load-bearing vehicle structure;
wherein, at least one spring element is arranged between the base frame and the frame part,
further wherein, the spring element operably exerts a pretensioning force on the frame part for assisting the raising of the coupling element.

2. The trailer device of claim 1 , wherein the at least one spring element comprises two spring elements positioned in a symmetrical arrangement on either side of the frame part.

3. The trailer device of claim 1 , wherein the at least one spring element comprises a leaf spring.

4. The trailer device of claim 3 , wherein the leaf spring comprises a first end region and a second end region, where the first end region is fastened to the base frame and the leaf spring bears against a counter bearing of the frame part in the second end region.

5. The trailer device of claim 4 , wherein the counter bearing comprises a bearing bolt protruding to a side on the frame part.

6. The trailer device of claim 5 , wherein the second end region of the leaf spring partially encompasses the bearing bolt in an arcuate manner.

7. The trailer device of claim 4 , wherein the leaf spring in the first end region is attached by a conically shaped mount following a curved path of the leaf spring when the frame part is raised and lowered.

8. The trailer device of claim 3 , wherein the leaf spring is placed under pretensioning by a running roller bearing against the frame part in an intermediate region.

9. The trailer device of claim 1 , wherein the at least one spring element comprises a tension spring.

10. The trailer device of claim 9 , wherein the tension spring is fastened in a first end region to the base frame and in a second end region to a counter bearing of the frame part.

11. The trailer device of claim 1 , wherein the frame part forms a cassette-like housing.

12. An agricultural vehicle, comprising:
a load-bearing vehicle structure; and
a trailer device mounted to the vehicle structure, the trailer device comprising:
a base part and a frame part, the frame part being pivotally articulated about an axis relative to the base part;
a guide part displaceably mounted in the frame part, the guide part having a coupling element provided on an end face;
a lifting apparatus for raising and lowering the coupling element relative to a base frame for attaching to the vehicle structure; and
a spring element arranged between the base frame and the frame part,
wherein, the spring element operably exerts a pretensioning force on the frame part for assisting the raising of the coupling element.

13. The agricultural vehicle of claim 12 , wherein the frame part forms a cassette-like housing.

14. The agricultural vehicle of claim 13 , wherein the lifting apparatus is positioned within the housing.

15. The agricultural vehicle of claim 12 , wherein the spring element comprises two spring elements positioned in a symmetrical arrangement on either side of the frame part.

16. The agricultural vehicle of claim 12 , wherein the spring element comprises a leaf spring having a first end region and a second end region, where the first end region is fastened to the base frame and the leaf spring bears against a counter bearing of the frame part in the second end region.

17. The agricultural vehicle of claim 16 , wherein:
the counter bearing comprises a bearing bolt protruding to a side on the frame part; and
the second end region of the leaf spring partially encompasses the bearing bolt in an arcuate manner.

18. The agricultural vehicle of claim 16 , wherein the leaf spring in the first end region is attached by a conically shaped mount following a curved path of the leaf spring when the frame part is raised and lowered.

19. The agricultural vehicle of claim 12 , wherein the at least one spring element comprises a tension spring fastened in a first end region to the base frame and in a second end region to a counter bearing of the frame part.

20. A trailer device mounted to a load-bearing vehicle structure of an agricultural vehicle, comprising:
a base part;
a frame part forming a cassette-like housing and being pivotally articulated about an axis relative to the base part;
a guide part displaceably mounted in the frame part, the guide part comprising a coupling element;
a lifting apparatus for raising and lowering the coupling element relative to a base frame for attaching to the vehicle structure, the lifting apparatus located in the cassette-like housing; and
a spring element arranged between the base frame and the frame part;
wherein, the spring element operably exerts a pretensioning force on the frame part for assisting the raising of the coupling element.

Assignees

• Deere & Co

Inventors

• Hingne Abhijeet
• Adsul Amol
• Spohn Benjamin

Classifications

• A01B59/04 Primary

  for machines pulled or pushed by a tractor · CPC title

• B60D1/50

  resiliently mounted (B60D1/30 takes precedence) · CPC title

• B60D1/141

  Arrangements or frames adapted to allow the connection of trailers to tractor three-point hitches · CPC title

• B60D1/065

  characterised by the hitch mechanism · CPC title

• B60D1/246

  for actuating the hitch by powered means · CPC title