WORKING MACHINE

• US 20090244920A1
• Filed: 01/10/2007
• Published: 10/01/2009
• Est. Priority Date: 02/28/2006
• Status: Active Grant

• Current Assignee: Komatsu Ltd.
• Original Assignee: Komatsu Ltd.
• Inventors: Muto, Keita, Miyazaki, Masamichi, Nagami, Koji, Yomogita, Makoto
• Granted Patent: US 8,070,334 B2
• Time in Patent Office: Days
• US Class Current: 362/543
• CPC Class Codes: B60Q 1/0483 mounted on a bracket, e.g. details concerning the mouting of the lamps on the vehicle body
• CPC Class Codes: B60Q 1/18 being additional front lights bracket mounted headlights B60Q1/0483
• CPC Class Codes: B60Q 2800/20 Utility vehicles, e.g. for agriculture, construction work
• CPC Class Codes: E02F 9/0866 Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment
• CPC Class Codes: E02F 9/0891 Lids or bonnets or doors or details thereof doors for cabins E02F9/163 takes precedence; for motor vehicles B62D25/10
• CPC Class Codes: E02F 9/16 Cabins, platforms, or the like, for drivers for motor vehicles in general B62D33/06, for cranes B66C13/54
• CPC Class Codes: E02F 9/24 Safety devices , e.g. for preventing overload E02F9/226 takes precedence

Abstract

The work machine has an operator'"'"'s cab, an engine hood, an exhaust pipe, a first headlight, and a second headlight. The engine hood is disposed in front of the operator'"'"'s cab. The exhaust pipe projects upwards from the engine hood. The first headlight and the second headlight are provided at a front part of the operator'"'"'s cab spaced in a lateral direction and disposed so that optical axes of the first and second headlights are mutually intersect but not to overlap with the exhaust pipe when viewed in a top plan view.

Claims

1. A work machine comprising:

an operator'"'"'s cab;

an engine hood disposed in front of the operator'"'"'s cab;

an exhaust pipe projecting upwards from the engine hood; and

a first headlight and a second headlight spaced apart in a lateral direction at a front part of the operator'"'"'s cab, the first and second headlights being disposed so that optical axes of the first and second headlights mutually intersect and the optical axes do not overlap with the exhaust pipe when viewed in a top plan view.

2. The work machine according to claim 1, wherein

the exhaust pipe is disposed in front of the first headlight or the second headlight so that the exhaust pipe is positioned to overlap with the first headlight or the second headlight, or outwardly of the first headlight or the second headlight.

3. The work machine according to claim 1, wherein

the operator'"'"'s cab has an external shape with a width in the lateral direction tapering towards a front side of the operator'"'"'s cab.

4. The work machine according to claim 1, wherein

the operator'"'"'s cab has a first pillar and a second pillar spaced apart in the lateral direction at the front part of the operator'"'"'s cab, the first and second pillars extending in a vertical direction, and

the exhaust pipe is disposed so as to overlap with the first pillar or the second pillar when viewed from the rear.

5. The work machine according to claim 1, further comprising

work implement disposed in front of the engine hood,

the first headlight and the second headlight being positioned so that an upper end of the work implement is illuminated with an intensity of illumination of equal to or greater than 300 lux.

6. The work machine according to claim 1, further comprising

work implement disposed in front of the engine hood,

the first headlight and the second headlight being positioned so that at least part of a side end of the work implement is illuminated with an intensity of illumination of equal to or greater than 300 lux.

7. The work machine according to claim 1, further comprising

a third headlight disposed between the first headlight and the second headlight in the lateral direction.

8. The work machine according to claim 7, wherein

the third headlight is arranged to illuminate a higher position than the first headlight and the second headlight.

9. The work machine according to claim 1, further comprising

a coupling member that couples the first headlight and the second headlight to the operator'"'"'s cab,

the coupling member comprising a first positioning unit having an inclined shape corresponding to an angle of the optical axis of the first headlight, and a second positioning unit having an inclined shape corresponding to the optical axis of the second headlight.