Cylinder retention device

Patent metadata

Field	Value
Publication number	US-10183847-B2
Application number	US-201615083455-A
Country	US
Kind code	B2
Filing date	Mar 29, 2016
Priority date	Mar 31, 2015
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

A system and method for retaining a linear actuator on a crane component such as a mast is disclosed. In the system a retaining mechanism is mounted on either a body of the linear actuator or the crane component and a catch is mounted to the other of the body or the crane component. Retraction of a rod of the linear actuator causes a cap on the rod to contact the retaining mechanism, which causes the retaining mechanism to move into a latched configuration securing the linear actuator.

First claim

The invention claimed is:

1. A longitudinally telescoping actuator comprising:
a body having a first body end and a second body end opposite the first end;
a rod having a first rod portion slidably disposed within the body and a second rod portion extending from the second body end, the rod having a first lateral extent and the second rod end having a cap with a second lateral extent;
a pin holder coupled to the body near the second body end;
a pin slidably disposed within the pin holder and biased to a position with a portion of the pin extending beyond the second body end; and
an arm extending laterally from the pin to a lateral location between the first lateral extent of the rod and the second lateral extent of the cap.

2. The longitudinally telescoping actuator of claim 1 , wherein the body comprises a hydraulic cylinder and the rod comprises a hydraulic cylinder rod.

3. The longitudinally telescoping actuator of claim 2 , wherein the first lateral extent of the rod comprises an outer diameter of the hydraulic cylinder rod.

4. The longitudinally telescoping actuator of claim 1 , wherein the arm comprises a lever coupled to the pin and a wear pad coupled to the lever, wherein the wear pad contacts the cylinder rod.

5. The longitudinally telescoping actuator of claim 1 , further comprising a spring biasing the pin to the position with a portion of the pin extending beyond the second body end.

6. The longitudinally telescoping actuator of claim 1 , wherein the first body end includes a connector having an axis of rotation perpendicular to a longitudinal axis of the body.

Assignees

• Manitowoc Crane Companies Llc

Inventors

• Holly Nathan P

Classifications

• B66C23/705 Primary

  telescoped by hydraulic jacks · CPC title

• B66C23/82

  Luffing gear · CPC title

• B66C23/70 Primary

  constructed of sections adapted to be assembled to form jibs or various lengths · CPC title

• B66C23/86

  hydraulically actuated · CPC title

• B66C23/00

  Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes (base supporting structures with legs B65C5/00) · CPC title