Work machine

Patent metadata

Field	Value
Publication number	US-11041288-B2
Application number	US-201816329387-A
Country	US
Kind code	B2
Filing date	Feb 8, 2018
Priority date	Feb 21, 2017
Publication date	Jun 22, 2021
Grant date	Jun 22, 2021

Abstract

A hydraulic excavator acquires operation content frequency data in a designated period based on output values output from a plurality of sensors sensing parameters that serve as indicators of operation contents performed via an operation device. A storage section stores a plurality of guide screens each corresponding to one of a plurality of work patterns of the hydraulic excavator. A work identifying section searches actual result data in the storage section for actual result data that matches or is similar to the operation content frequency data acquired by the data acquiring section in terms of operation contents and frequency thereof, and that identifies a current work pattern based on a work pattern allocated to actual result data related to a result of the search. A display device displays a guide screen corresponding to the work pattern identified by the work identifying section among the plurality of guide screens.

First claim

The invention claimed is:

1. A work machine including
an articulated-type work implement,
an operation device that outputs an operation signal corresponding to an operation amount, and
a plurality of actuators that are driven based on the operation signal output from the operation device and that drive the work implement, wherein
the work machine forms a target work surface using the work implement,
the work machine comprises:
a plurality of sensors that senses a plurality of parameters to serve as indicators of operation contents performed via the operation device;
a display device that displays a guide screen corresponding to a work pattern of the work machine; and
a controller that performs screen display control of the display device,
wherein the plurality of sensors include:
a posture sensor for the work implement,
load sensors for the plurality of actuators, and
an operation amount sensor for the operation device,
wherein the controller includes:
a data acquiring section that acquires operation content frequency data indicating operation contents performed on the work machine and frequency of the operation contents in a period starting a predetermined time before a current time and ending at the current time, based on actions of the plurality of actuators, loads of the plurality of actuators, and a distance between the work implement and the target work surface, the actions being calculated from an output value of the operation amount sensor in the period, the loads being calculated from output values of the load sensors in the period, the distance being calculated from an output value of the posture sensor for the work implement in the period and a position of the target work surface,
a storage section that stores a plurality of guide screens each corresponding to one of a plurality of work patterns registered in advance as work patterns of the work machine,
a work identifying section that identifies a work pattern at the current time from the plurality of work patterns based on the operation content frequency data acquired by the data acquiring section, and
a display control section that selects, from the plurality of guide screens, a guide screen corresponding to the work pattern identified by the work identifying section, and
wherein the display device displays the guide screen selected by the display control section.

2. The work machine according to claim 1 , wherein
the storage section stores actual result data of the operation content frequency data together with a work pattern performed at a time of acquisition of each piece of the actual result data, and
the work identifying section searches the actual result data for data that matches or is similar to the operation content frequency data acquired by the data acquiring section in terms of operation contents and frequency thereof, and identifies the work pattern at the current time based on a work pattern allocated to actual result data related to a result of the search.

3. The work machine according to claim 2 , wherein
the work machine is an excavator including a track structure and a swing structure attached swingably to an upper portion of the track structure, the work implement being attached to the swing structure in the excavator, and
the plurality of actuators drive the track structure, the swing structure, and the work implement.

4. The work machine according to claim 3 , wherein
the plurality of guide screens stored in the storage section include at least two of a normal excavation pattern screen on which a side view of a tip portion of the work implement and the target work surface are displayed, a loading pattern screen on which a loading amount and total loading amount of loading by the work implement are displayed, a travel pattern screen on which a direction of a destination and a top view of the excavator are displayed, a slope-tamping pattern screen on which an area in which slope-tamping has been performed and the number of times the slope-tamping has been performed are displayed, and an embanking pattern screen on which a side view of a tip portion of the work implement, the target work surface, and a current embanking situation are displayed.

Assignees

• Hitachi Construction Mach Co

Inventors

• HIROMATSU Kohei
• Edamura Manabu
• Izumi Shiho

Classifications

• E02F3/438

  Memorising movements for repetition, e.g. play-back capability · CPC title

• B60Y2200/41

  Construction vehicles, e.g. graders, excavators · CPC title

• E02F9/26 Primary

  Indicating devices {(E02F5/145 takes precedence)} · CPC title

• E02F9/2271

  Actuators and supports therefor and protection therefor · CPC title

• E02F5/145

  control and indicating devices · CPC title