Automatic position locking mechanism for loader assembly parking stands

Patent metadata

Field	Value
Publication number	US-9650754-B2
Application number	US-201514724766-A
Country	US
Kind code	B2
Filing date	May 28, 2015
Priority date	May 28, 2015
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

A parking stand for a detachable front loader assembly including a support leg pivoted to a boom, which is able to pivot between an extended and a retracted position. A set of parallel struts engage a locking plate, which is attached to the support leg. Being engaged within locking mechanism divots, the support leg is secured within an optimally extended position. Extending the parking stand support leg into a parking configuration is achieved by way of a series of semi-automated actions that are triggered and propelled by way of hydraulic movement of a loader's boom and bucket. Such semi-automated actions include unlocking, extending, and securing the support leg. Retraction of the support leg is similarly executed.

First claim

What is claimed is:

1. A parking stand assembly for a loader boom to which is mounted a movable attachment, the parking state assembly comprising:
a support leg coupled to the loader boom at a first pin connection to be pivotal between extended and retracted positions;
a strut assembly coupled to the loader boom at a second pin connection, the strut assembly having a first strut part and a second strut part, the first and second struts parts each being separately pivotally coupled to the second pin connection and each having an engagement end; and
a locking mechanism mounted to the support leg and receiving the engagement ends of the first and second strut parts;
wherein when the engagement ends of the first and second strut parts are engaged with the locking mechanism the support leg is held by the strut assembly in the extended position so as to support the loader boom.

2. The loader boom parking stand assembly of claim 1 , wherein the engagement ends of the first and second strut parts are independently engagable with the locking mechanism.

3. The loader boom parking stand assembly of claim 1 , wherein the locking mechanism is a locking plate having a plurality of divots; and
wherein the engagement ends of the first and second strut parts are configured to fit, at least in part, within the plurality of divots.

4. The loader boom parking stand assembly of claim 3 , wherein the divots are aligned in the locking plate in columns arranged side by side.

5. The loader boom parking stand assembly of claim 4 , wherein the divots of one column are offset from the divots of an adjacent column so as not to align side by side.

6. The loader boom parking stand assembly of claim 1 , wherein the first strut part includes a limiter that prevents the second strut part from pivoting ahead of the first strut part while moving in a single direction.

7. The load boom parking stand assembly of claim 1 , wherein the first strut part includes a limiter that causes the first and second strut parts to pivot in unison.

8. The loader boom assembly parking stand of claim 7 , wherein the limiter maintains an angular offset between the first and second strut parts.

9. The loader boom parking stand assembly of claim 1 , further including an actuator configured to move the support leg from the extended position to the retracted position.

10. The loader boom parking stand assembly of claim 9 , wherein the actuator includes a cable coupling the support leg to the movable implement.

11. The loader boom parking stand assembly of claim 1 , further including a latch configured to secure to the loader boom to latch the support leg in the retracted position.

Assignees

• Deere & Co

Inventors

• Martinez Ignacio Alonso
• Liñan Jose Rene
• Faivre Damien

Classifications

• F16M2200/024

  by positive interaction, e.g. male-female connections · CPC title

• E02F3/6273 Primary

  using legs to support the beams or arms on the ground during the connecting process · CPC title

• E02F3/3627 Primary

  with a hook and a longitudinal locking element · CPC title

• F16M11/38

  by folding {, e.g. pivoting or scissors tong mechanisms} · CPC title