WORKING MACHINE AND METHOD OF MEASURING WORK AMOUNT OF WORKING MACHINE

• US 20150292178A1
• Filed: 11/12/2013
• Published: 10/15/2015
• Est. Priority Date: 11/20/2012
• Status: Active Grant

• Current Assignee: Komatsu Ltd.
• Original Assignee: Komatsu Ltd.
• Inventors: Ueda, Masamichi, Nagato, Atsushi
• Granted Patent: US 9,783,952 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: E02F 3/435 for dipper-arms, backhoes or the like
• CPC Class Codes: E02F 9/2285 Pilot-operated systems
• CPC Class Codes: E02F 9/2292 Systems with two or more pumps
• CPC Class Codes: E02F 9/2296 Systems with a variable displacement pump
• CPC Class Codes: E02F 9/26 Indicating devices E02F5/145 takes precedence
• CPC Class Codes: G07C 5/0816 Indicating performance data, e.g. occurrence of a malfunction
• CPC Class Codes: G07C 5/0841 Registering performance data recording measured values G01D; information storage G11B

Abstract

A working machine includes: an operation state detection unit configured to detect a physical amount output according to an operation of an operation lever; a time integration unit configured to calculate a time integration value by performing time integration of the physical amount; a determination unit configured to cause the time integration value and a predetermined operating angle of an excavating and loading mechanism associated with the operation of the operation lever to correspond to each other, and to determine that the operation of the operation lever has been performed at a time the time integration value becomes a predetermined integration value or more; and a counting unit configured to count at a time operations of the excavating and loading mechanism determined by the determination unit are performed in a predetermined order, number of times of excavating and loading work.

Claims

1. A working machine comprising:

an operation state detection unit configured to detect a physical amount output according to an operation of an operation lever;

a time integration unit configured to calculate a time integration value by performing time integration of the physical amount;

a determination unit configured to cause the time integration value and a predetermined operating angle of an excavating and loading mechanism associated with the operation of the operation lever to correspond to each other, and to determine that the operation of the operation lever has been performed at a time the time integration value becomes a predetermined integration value or more; and

a counting unit configured to count at a time operations of the excavating and loading mechanism determined by the determination unit are performed in a predetermined order, number of times of excavating and loading work, treating the operations of the excavating and loading mechanism performed in the predetermined order, as one time.

2. The working machine according to claim 1, wherein the operations of the excavating and loading mechanism are excavating and loading operations performed in an order of an excavation operation, a forward swing operation, a soil removal operation, and a return swing operation.

3. The working machine according to claim 2, wherein the determination unit is configured to determine that the excavation operation has been performed at a time the time integration value is the predetermined integration value or more, and the physical amount is an operation termination predetermined value or less in order to determine the excavation operation.

4. The working machine according to claim 3, wherein the determination unit is configured to determine that the excavation operation has been performed at a time the time integration value is the predetermined integration value or more, and a predetermined time has passed after the physical amount becomes the operation termination predetermined value or less in order to determine the excavation operation.

5. The working machine according to claim 2, wherein the time integration unit is configured to reset the time integration value at a time a state where the physical amount is an integration start value or less has passed for a time integration value hold time after start of time integration in order to determine the excavation operation or the oil removal operation.

6. The working machine according to claim 1, wherein the operation lever is a pilot control lever or an electric lever, and the physical amount is a pilot pressure or an electrical signal.

7. The working machine according to claim 1, comprising:

an output unit configured to output the number of times of the excavating and loading work counted by the counting unit to a display device or an outside.

8. The working machine according to claim 1, comprising:

a setting change unit configured to change various setting values.

9. A method of measuring a work amount of a working machine, the method comprising the steps of:

detecting a physical amount output according to an operation of an operation lever;

calculating a time integration value by performing time integration of the physical amount;

causing the time integration value and a predetermined operating angle of an excavating and loading mechanism associated with the operation of the operation lever to correspond to each other, and to determine that the operation of the operation lever has been performed, when the time integration value becomes a predetermined integration value or more; and

counting, when operations of the excavating and loading mechanism determined by the determining step are performed in a predetermined order, number of times of excavating and loading work, treating the operations of the excavating and loading mechanism performed in the predetermined order, as one time.