Working machine and method of measuring work amount of working machine

• US 9,783,952 B2
• Filed: 11/12/2013
• Issued: 10/10/2017
• Est. Priority Date: 11/20/2012
• Status: Expired due to Fees

• Current Assignee: Komatsu Ltd.
• Original Assignee: Komatsu Ltd.
• Inventors: Nagato, Atsushi, Ueda, Masamichi
• Primary Examiner(s): Smith, Jelani
• Assistant Examiner(s): Martinez Borrero, Luis A
• Application Number:
  US14/438,980
• Publication Number:
  US 20150292178A1
• Time in Patent Office: 1,428 Days
• Field of Search: 701 50, 701 22, 701103, 701 291, 701 323, 701500, 701 84, 701 96, 701 2, 701 23, 701 339, 701 327, 701400, 701408, 701 41, 701 48, 701110, 701124, 701102, 701111, 701 54, 701 87
• 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:

a controller that is;

configured to detect a physical amount output according to an operation of an operation lever,

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

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

configured to count, when a determined operation of the excavating and loading mechanism is performed in a predetermined order, number of times of excavating and loading work, treating the operation of the excavating and loading mechanism performed in the predetermined order, as one time, wherein

the operation of the excavating and loading mechanism includes at least an excavating operation and a swing operation.

2. The working machine according to claim 1, wherein the operation of the excavating and loading mechanism is 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 controller 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 controller 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 controller 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 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 changer configured to change various setting values.

9. A computer-implemented method of measuring a work amount of a working machine, the computer-implemented method comprising:

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 a determined operation of the excavating and loading mechanism is performed in a predetermined order, number of times of excavating and loading work, treating the operation of the excavating and loading mechanism performed in the predetermined order, as one time, wherein

the operation of the excavating and loading mechanism includes at least an excavating operation and a swing operation.