Construction machine
US8979125B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2012 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Jan 6, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D49/085
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
On a rear part side of a revolving frame (5) constituting an upper revolving structure (3), a counterweight (7) holding weight balance with a working mechanism (4) is provided, and on the front side of the counterweight (7), an engine (9) and an exhaust gas post-treatment device (21) for applying purification treatment to an exhaust gas of the engine (9) are provided. The exhaust gas post-treatment device (21) is configured by connecting a PM trapping filter device (22) and an NOx purifying device (23), and the PM trapping filter device (22) is mounted on the engine (9), while the NOx purifying device (23) is mounted on the counterweight (7). When the counterweight (7) is to be removed from the revolving frame (5), the NOx purifying device (23) is supported by a treatment device support bracket (26) mounted on the engine (9). As a result, the counterweight (7) can be removed while the PM trapping filter device (22) and the NOx purifying device (23) are connected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.