Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Work vehicles with cylinder cushioning arrangement

Active Publication Date: 2017-04-13
DEERE & CO
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0023]The first internal damper of the first hydraulic cylinder may cushion the second hydraulic cylinder by rest

Problems solved by technology

In these vehicles, the swinging and steering is typically limited to a restricted range of motion such as 90° to 180°.
One problem with this arrangement is that the impact of the mechanical stops banging together can damage the vehicle.
One problem with this arrangement is that a position sensor must be provided to sense the approaching collision of stops and to signal an ECU to close the valves and slow and/or stop the swinging/steering.
This problem has been somewhat ameliorated by using hydraulic cylinders that

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Work vehicles with cylinder cushioning arrangement
  • Work vehicles with cylinder cushioning arrangement
  • Work vehicles with cylinder cushioning arrangement

Examples

Experimental program
Comparison scheme
Effect test

Example

DETAILED DESCRIPTION OF THE DRAWINGS

[0032]Referring to FIG. 1, a hydraulic cylinder 100 comprises a piston rod 102, a piston 104 mounted on the piston rod 102, a rod end port 106 formed in the rod end of the hydraulic cylinder 100, a cylinder end port 108 and a throttled cylinder end port 110 formed in the cylinder end of the hydraulic cylinder 100, and an internal damper 112 that throttles hydraulic fluid flow through the throttled cylinder end port 110.

[0033]The internal damper 112 comprises an aperture 114 formed in the cylinder end of the hydraulic cylinder 100, and a rod 116 supported on the end of the piston 104.

[0034]As the piston 104 moves to the left in FIG. 1, hydraulic fluid flows out of the cylinder end port 108 and the throttled cylinder end port 110. Likewise, hydraulic fluid flows into the rod end port 106. When the piston 104 moves to the right in FIG. 1, the hydraulic fluid flows are reversed.

[0035]Eventually, as the piston moves to the left in FIG. 1, the rod 116 w...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A work vehicle with the cylinder cushioning arrangement includes two frame members coupled together with two hydraulic cylinders that are cross-coupled to each other. Each of the two hydraulic cylinders includes a flow-restricted port (at either its rod end or the cylinder end) that throttles hydraulic fluid flow.

Description

FIELD OF THE INVENTION[0001]This invention relates to work vehicles such as construction or agricultural vehicles. More particularly, it relates to work vehicles having articulated steering or swinging joints. Even more particularly, it relates to work vehicles with articulated steering or swinging joints that have hydraulic cylinder cushioning means to cushion the steering or swinging.BACKGROUND OF THE INVENTION[0002]Many vehicles use steering or swing joints that employ two hydraulic cylinders disposed to steer or swing by moving in opposite directions. For example, one cylinder will extend while the other cylinder retracts, and the two cylinders acting together in opposite directions will together affect the desired steering or swinging.[0003]One cylinder will affect the steering or swinging by pushing two members apart. The other cylinder will contribute to the same steering or swinging by pulling the two members together.[0004]In these vehicles, the swinging and steering is typ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B60G17/04B60G11/26A01B59/041
CPCB60G17/04B60G2800/24B60G11/265A01B59/0415B62D5/12B62D12/00F16F9/486F16F9/49
Inventor CURNYN, WILLIAM P.OLSEN, HENRY C.SOMERS, MICHAEL D.STANDER, FRANCOIS F.
Owner DEERE & CO
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com