Two engine four-wheel drive scraper with main propulsion at rear axle
US4207692A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1979 |
| Grant date | Jun 17, 1980 |
| Priority date | — |
| Expiry date | Feb 9, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D59/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An off-highway earth-moving vehicle of the scraper type which includes a tractor section and scraper section interconnected by a draft frame providing rolling rigidity, each section having a pair of ground-engaging wheels. A floating axle assembly is provided on the tractor section permitting independent movement of the tractor wheels in the following of ground contours. The scraper section is driven by a first engine having a first torque converter coupled to the scraper wheels. The tractor section is driven by a second engine having a second torque converter coupled to the tractor wheels. The sections of the vehicle are so proportioned in size and weight that the weight applied to the scraper wheels under both loaded and unloaded conditions is approximately twice the weight applied to the tractor wheels and the torque converters in the sections are so proportioned that at normal operating engine r.p.m. the power supplied to the scraper wheels is approximately twice the power supplied to the tractor wheels. This is accomplished by using torque converters having respective maximum horsepower output ratings at an input speed corresponding to normal operating engine r.p.m. which bear…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.