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Apparatus for and method of attaching a piston to a cylinder rod

A technology of piston and piston assembly, applied in the field of hydraulic cylinder, can solve the problem of small surface area clamping load and so on

Inactive Publication Date: 2015-03-11
CLARK EQUIP CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The device provides very little surface area to absorb the clamping load, which limits the amount of clamping load that can be applied to the piston

Method used

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  • Apparatus for and method of attaching a piston to a cylinder rod
  • Apparatus for and method of attaching a piston to a cylinder rod
  • Apparatus for and method of attaching a piston to a cylinder rod

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Embodiment Construction

[0016] The concepts discussed below are not limited in their application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. Rather, the illustrative embodiments set forth herein are used to introduce and explain the concepts, which may be practiced or carried out in various other ways. The terms used herein are for the purpose of description and should not be considered limiting. The use of "comprising," "including," or "having" and variations thereof herein is meant to encompass the subsequently listed items and equivalents thereof as well as additional items.

[0017] figure 2 is a side view of a typical power machine 100 that may employ various embodiments of the disclosed hydraulic cylinders. figure 2 The illustrated power machine 100 is a work vehicle in the form of a skid loader, but such as track loaders, steerer loaders including full steerer loaders, excavators, and util...

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PUM

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Abstract

Disclosed embodiments include hydraulic cylinder assemblies and piston assemblies for use in hydraulic cylinder assemblies. A rod is attached to a piston. The rod has first portion, a second portion with a cross-sectional area that is less than a cross-sectional area of the first portion, and a third portion positioned between the first and second portions. The third portion has a cross-sectional area that transitions between the cross-sectional area of the first portion and the cross-sectional area of the second portion. A collar is sized to fit over the rod with an internal feature that engages the third portion of the rod. A fastener holds the piston against the collar and provides a clamp force on the piston.

Description

technical field [0001] The disclosed embodiments relate to hydraulic cylinders, such as the types used on power machine machines. Background technique [0002] Powered machines such as skid steers, excavators, utility vehicles, etc. typically utilize hydraulic cylinders as actuators for raising and lowering lift arms. For this application, hydraulic cylinders are often referred to as lift cylinders. Some power machines also utilize hydraulic cylinders to tilt or rotate the attached tool relative to portions of the power machine's attached tool. For example, the orientation of the bucket tool or shovel tool may be controlled by a hydraulic cylinder connected to the tool or a tool bracket connected to the tool. For this application, hydraulic cylinders are often referred to as swing cylinders. [0003] A hydraulic cylinder of the type used in power machines and for other purposes having a cylinder body in the form of a tube or barrel defining a chamber with a piston movable...

Claims

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Application Information

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IPC IPC(8): F15B15/14F16J1/12
CPCF15B15/1447F16J10/02F16J1/12
Inventor 詹森·R·库姆斯斯科特·N·舒托马斯·J·托卡
Owner CLARK EQUIP CO INC