Towing hitch

Patent metadata

Field	Value
Publication number	US-10940727-B2
Application number	US-201816034595-A
Country	US
Kind code	B2
Filing date	Jul 13, 2018
Priority date	Jul 13, 2017
Publication date	Mar 9, 2021
Grant date	Mar 9, 2021

Abstract

The disclosure relates to a towing hitch for a work vehicle. The towing hitch includes a retaining element. A coupling member coupled to the retaining element. A guide element having at least one guide channel formed therein; wherein the guide channel is sized to receive a portion of the retaining element. An actuator coupled to at least one surface of the retaining element, wherein the actuator is arranged such that lateral displacement of the actuator moves the retaining element between a first position and a second position within the guide channel of the guide element.

First claim

What is claimed is:

1. A towing hitch for use with a work vehicle, the towing hitch comprising:
a retaining element;
a coupling member coupled to the retaining element;
a guide element having at least one guide channel formed therein; wherein the guide channel is sized to receive a portion of the retaining element;
a double-acting cylinder including a piston side chamber and a rod side chamber, the double-acting cylinder coupled to at least one surface of the retaining element, wherein the double-acting cylinder is arranged such that a lateral displacement of the double-acting cylinder moves the retaining element between a first position and a second position within the guide channel;
a first pressure sensor detecting a first pressure in the piston side chamber; and
a second pressure sensor detecting a second pressure in the rod side chamber;
wherein a tensile force is determined based upon the first and second pressures.

2. The towing hitch of claim 1 , wherein the coupling member is continuously displaceable.

3. The towing hitch of claim 1 , wherein the double-acting cylinder includes at least one of a pneumatic cylinder or a hydraulic cylinder.

4. The towing hitch of claim 1 , further including at least one sensor and a processing unit for adjusting a position of the coupling member.

5. The towing hitch of claim 1 , wherein the retaining element includes a rectangular plate.

6. The towing hitch of claim 1 , wherein the guide element is integrally coupled to an attachment block.

7. The towing hitch of claim 1 , wherein the guide channel includes a grooved guide channel.

8. The towing hitch of claim 1 , wherein the coupling member is arranged displaceably in and contrary to a driving direction.

9. The towing hitch of claim 8 , wherein the coupling member is a ball-head coupling.

10. The towing hitch of claim 1 , wherein a braking strategy of the work vehicle and towed vehicle is implemented such that the tensile force is equal to zero during braking.

11. The towing hitch of claim 1 , wherein a towed load of a towed vehicle coupled to the work vehicle is determined based upon the tensile force.

12. A method for adjusting a position of a coupling member of a towing hitch of a work vehicle, the method comprising:
positioning the coupling member within a retaining element;
detecting, via a sensor, a data associated with a work vehicle;
determining a first position of the coupling member via a processing unit based on the data;
adjusting the position of the coupling member within the retaining element from the first position to a second position via a double-acting cylinder including a piston side chamber and a rod side chamber;
detecting a first pressure in the piston side chamber via a first pressure sensor;
detecting a second pressure in the rod side chamber via a second pressure sensor; and
determining a tensile force based upon the first and second pressures.

13. The method of claim 12 , further comprising:
determining a towed load of a towed vehicle coupled to the work vehicle based upon the tensile force.

14. The method of claim 12 , further comprising:
implementing a braking strategy of the work vehicle and towed vehicle such that the tensile force is equal to zero during braking.

Assignees

• Deere & Co

Inventors

• Billich Manuel

Classifications

• A01B59/004 Primary

  Length-adjustable links · CPC title

• B60D1/44

  horizontally · CPC title

• A01B59/008

  Link connectors with spherical surfaces · CPC title

• A01B69/006

  derived from the steering of the tractor · CPC title

• A01B59/042

  having pulling means arranged on the rear part of the tractor · CPC title