Hitch assembly for the front frame of an articulated construction machine
US6402177B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1999 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Aug 16, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F9/0841
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In many types of construction machines, the frame assembly comprises a rear frame that supports the engine and drive train components and a front frame that supports the work implement. In this type of machine, the two frames are normally pinned together and the front frame is articulated with respect to the rear frame by a pair of steering cylinders to provide steering for the machine. In the area in which the two frames are pinned together it is necessary to provide structural support, especially in the hitch area of the front frame. The present invention provides a front frame assembly (12) that has an upper and lower hitch plate (118, 120) that are positioned between and secured to the rear portion of a pair of side plates (62, 64) defined by the front frame assembly (12). A first support plate (128) extends between and is secured to the side plates (62, 64) and defines an upper and lower end portion (172, 176) that are secured to the respective upper and lower hitch plates (118, 120) to provide uninterrupted support therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.