Hydraulic excavator

• US 8,820,457 B2
• Filed: 11/13/2012
• Issued: 09/02/2014
• Est. Priority Date: 11/13/2012
• Status: Active Grant

• Current Assignee: Komatsu Ltd.
• Original Assignee: Komatsu Ltd.
• Inventors: Nishimura, Minetaka
• Primary Examiner(s): Dickson, Paul N
• Assistant Examiner(s): Condra, Darlene P
• Application Number:
  US13/990,897
• Publication Number:
  US 20140133949A1
• Time in Patent Office: 658 Days
• Field of Search: 180/89.13
• US Class Current: 180/89.13
• CPC Class Codes: E02F 9/0833 Improving access, e.g. for maintenance, steps for improving driver's access, handrails
• CPC Class Codes: E02F 9/0858 Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units E02F9/16, E02F9/18 take precedence

Abstract

A hydraulic excavator basically includes a counterweight, an engine compartment, an equipment compartment, a cab, a plurality of steps, a passage and a pair of antenna supporting parts for supporting a pair of GNSS antennas, respectively. The antenna supporting parts are positioned ¼ or more of the vehicle width away from the revolving center and are positioned closer to the revolving center than a left rear edge of the passage. The left rear edge of the passage is the position furthest away from the revolving center of the steps and the passage.

Claims

1. A hydraulic excavator comprising:

a lower driving unit;

an upper revolving unit revolvably mounted on the lower driving unit about a revolving center;

a counterweight disposed on the upper revolving unit;

a machine compartment disposed in front of the counterweight on the upper revolving unit;

a cab disposed in front of the machine compartment on the upper revolving unit;

a passage formed on the machine compartment;

a plurality of steps connected to the machine compartment and leading to the passage; and

a pair of antenna supporting parts configured to support a pair of antennas, the pair of antenna supporting parts being positioned ¼

or more of a vehicle width of hydraulic excavator from the revolving center, the pair of antenna supporting parts being positioned closer to the revolving center than a position furthest away from the revolving center of the passage and the steps as viewed from above.

2. The hydraulic excavator according to claim 1, wherein

the antenna supporting parts are positioned on one of the machine compartment, the cab, and the steps as viewed from above.

3. The hydraulic excavator according to claim 2, further comprising:

a pair of handrails disposed on the machine compartment, the antenna supporting parts being connected to the handrails.

4. The hydraulic excavator according to claim 3, wherein

the antenna supporting parts are positioned on a side opposite to the passage relative to the handrails as viewed from above.

5. The hydraulic excavator according to claim 2, further comprising:

a pair of handrails disposed on the machine compartment, the antenna supporting parts being a portion of the handrails.

6. The hydraulic excavator according to claim 2, further comprising:

a pair of antennas removably attached to the antenna supporting parts.

7. The hydraulic excavator according to claim 6, wherein

the machine excavator includes an engine compartment disposed in front of the counterweight, and an equipment compartment disposed in front of the engine compartment, the passage being formed on the equipment compartment, and the steps being disposed in front of the equipment compartment.

8. The hydraulic excavator according to claim 2, wherein

the machine excavator includes an engine compartment disposed in front of the counterweight, and an equipment compartment disposed in front of the engine compartment, the passage being formed on the equipment compartment, and the steps being disposed in front of the equipment compartment.

9. The hydraulic excavator according to claim 1, further comprising:

a pair of handrails disposed on the machine compartment, the antenna supporting parts being connected to the handrails.

10. The hydraulic excavator according to claim 9, wherein

the antenna supporting parts are positioned on a side opposite to the passage relative to the handrails as viewed from above.

11. The hydraulic excavator according to claim 10, further comprising:

a pair of antennas removably attached to the antenna supporting parts.

12. The hydraulic excavator according to claim 10, wherein

the machine excavator includes an engine compartment disposed in front of the counterweight, and an equipment compartment disposed in front of the engine compartment, the passage being formed on the equipment compartment, and the steps being disposed in front of the equipment compartment.

13. The hydraulic excavator according to claim 9, further comprising:

a pair of antennas removably attached to the antenna supporting parts.

14. The hydraulic excavator according to claim 9, wherein

the machine excavator includes an engine compartment disposed in front of the counterweight, and an equipment compartment disposed in front of the engine compartment, the passage being formed on the equipment compartment, and the steps being disposed in front of the equipment compartment.

15. The hydraulic excavator according to claim 1, further comprising:

a pair of handrails disposed on the machine compartment, the antenna supporting parts being a portion of the handrails.

16. The hydraulic excavator according to claim 15, further comprising:

a pair of antennas removably attached to the antenna supporting parts.

17. The hydraulic excavator according to claim 15, wherein

the machine excavator includes engine compartment disposed in front of the counterweight, and an equipment compartment disposed in front of the engine compartment, the passage being formed on the equipment compartment, and the steps being disposed in front of the equipment compartment.

18. The hydraulic excavator according to claim 1, further comprising:

a pair of antennas removably attached to the antenna supporting parts.

19. The hydraulic excavator according to claim 1, wherein

the machine excavator includes an engine compartment disposed in front of the counterweight, and an equipment compartment disposed in front of the engine compartment, the passage being formed on the equipment compartment, and the steps being disposed in front of the equipment compartment.