Unlock instant, AI-driven research and patent intelligence for your innovation.

Safety device for hydraulic hitch assembly

A safety equipment, hydraulic technology, used in mechanically driven excavators/dredgers, earth movers/shovels, construction, etc.

Inactive Publication Date: 2008-12-24
妮科尔·伊丽莎白·波西蒂 +1
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operator then needs to go back up into the cab to operate the hydraulics to drive the hitch assembly to change the attachment of the hitch assembly, after which the operator has to come down again from the cab to re-engage the safety limiting equipment

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
  • Safety device for hydraulic hitch assembly
  • Safety device for hydraulic hitch assembly
  • Safety device for hydraulic hitch assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The term "hydraulic coupling assembly" as used throughout this specification is intended to include quick couplings as well as any type of hydraulic assembly used to connect and disconnect various attachments to and from large machinery.

[0023] see figure 1 , showing a safety device that can be connected to the hydraulic coupling assembly. The safety device 10 includes a generally elongated body portion 12 and includes an engagement end 85 and a pivot point 15 . The safety device 10 also includes a spring 20 which, in this illustration, is biased against a retaining block 45 which is opposed to the hydraulic coupling assembly ( figure 1 Not shown in) the body part is fixed. The safety device 10 also includes a hydraulic piston 35 having a hydraulic fluid space 25 for receiving hydraulic fluid under pressure to operate the hydraulic piston 35 . The hydraulic piston 35 is shown resting on a retaining block 40 which is also connected and fixed relative to the body por...

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 safety device for use with a hydraulic hitch assembly operable between an engaged and a disengaged position, the safety device including: a main body portion moveable between an engaged position and a disengaged position, whereby when the main body portion is in the engaged position the safety device prevents the hydraulic hitch assembly from moving to a disengaged position; a biasing means to bias the main body portion towards an engaged position; and a hydraulic piston which when operated acts against the biasing means and moves the main body portion to a disengaged position.

Description

technical field [0001] The present invention relates to a safety device for a hydraulic coupling assembly, in particular to a safety device operable remotely from the coupling assembly. Background technique [0002] Large mobile machines such as excavators are usually equipped with various additional devices to improve the versatility of the machine. Examples of such attachments include buckets or rock hammers. Typically, these attachments are mounted on the articulated arm of the excavator by means of a quick change device, such as a hitch assembly or quick coupler, usually hydraulically actuated. [0003] In Australian Patent No. 586124 a hydraulic coupling assembly is described which includes a pair of opposing jaws which are remotely operable and adapted to move between engaged and disengaged positions. In the disengaged position, said pawl can fit between the internal transverse hinge pins of the attachment. Then, using hydraulic pistons or cylinders, the jaws are mo...

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
Patent Type & Authority Applications(China)
IPC IPC(8): E02F3/96E02F3/36
CPCE02F3/3618E02F3/365E02F3/3663E02F3/36E02F3/96
Inventor 斯图尔特·亚历山大·埃塞克斯
Owner 妮科尔·伊丽莎白·波西蒂