Work machine and control system for work machine

Patent metadata

Field	Value
Publication number	US-12331489-B2
Application number	US-202117907777-A
Country	US
Kind code	B2
Filing date	Mar 31, 2021
Priority date	Mar 31, 2021
Publication date	Jun 17, 2025
Grant date	Jun 17, 2025

Abstract

Provided is a work machine and a control system for the work machine capable of preventing reduction of a work efficiency when inputting a complicated work area. The work machine includes a work area setting device 501 , a work machine position/attitude acquisition device 502 and a work device position/attitude acquisition device 503 , a controller 500 , and a designated area setting device 504 . When a hydraulic excavator (work machine) 1 intrudes on a designated area 401 , the controller 500 puts operation restriction control in a work area 111 to an enabled state or disabled state according to an enable or disable setting of the operation restriction control depending on the designated area 401 set in the designated area setting device 504.

First claim

The invention claimed is:

1. A work machine comprising:
a work area setting device adapted to set a work area for performing operation restriction control of a work machine;
an acquisition device adapted to acquire at least one of a position or an attitude of the work machine;
a controller adapted to switch between an enabled state, in which the operation restriction control of the work machine in the work area is enabled, and a disabled state, in which the operation restriction control of the work machine in the work area is disabled, and, when the operation restriction control is switched to the enabled state, perform the operation restriction control of the work machine in the work area; and
a designated area setting device adapted to set any given designated area in a worksite and set a relationship between whether the position of the work machine is included in the designated area and the enabled state or disabled state of the operation restriction control in the work area,
wherein the operation restriction control in the work area performs deceleration or stopping of an operation of the work machine when the work machine is included in a deceleration area or a stop area provided in the work area, and
wherein when the work machine moves and the position thereof is included in the designated area, the controller puts the operation restriction control in the work area to an enabled state or disabled state according to a setting of the relationship between whether the position of the work machine is included in the designated area and the enabled state or disabled state of the operation restriction control in the work area set in the designated area setting device.

2. The work machine according to claim 1 , further comprising a designated area semiautomatic setting device adapted to set the designated area according to a shape of the work area.

3. The work machine according to claim 1 , further comprising a designated area semiautomatic setting device adapted to set the designated area so as to match with the work area or outside of the work area.

4. The work machine according to claim 1 , further comprising a designated area semiautomatic setting device adapted to set the designated area according to an operation control content in the work area.

5. The work machine according to claim 1 , further comprising a display device adapted to simultaneously display the designated area, the work area, and an enabled state or disabled state of the operation restriction control in the work area.

6. A control system for a work machine, comprising:
a work area setting device adapted to set a work area for performing operation control of a work machine; and
an acquisition device adapted to acquire at least one of a position or an attitude of the work machine,
wherein the control system for the work machine is adapted to switch between an enabled state, in which operation restriction control of the work machine in the work area is enabled, and a disabled state, in which the operation restriction control of the work machine in the work area is disabled, and, when the operation restriction control is switched to the enabled state, perform the operation restriction control of the work machine in the work area,
the control system for the work machine further comprising:
a designated area setting device adapted to set any given designated area in a worksite and, set a relationship between whether the position of the work machine is included in the designated area and the enabled state or disabled state of the operation restriction control in the work area,
wherein the operation restriction control in the work area performs deceleration or stopping of an operation of the work machine when the work machine is included in a deceleration area or a stop area provided in the work area, and
when the work machine moves and the position thereof is included in the designated area, the control system for the work machine puts the operation restriction control in the work area to an enabled state or disabled state according to a setting of the relationship between whether the position of the work machine is included in the designated area and the enabled state or disabled state of the operation restriction control in the work area set in the designated area setting device.

Assignees

• Hitachi Construction Mach Co

Inventors

• Shiwaku Koji
• Imura Shinya

Classifications

• E02F9/2296 Primary

  Systems with a variable displacement pump · CPC title

• E02F9/2285

  Pilot-operated systems · CPC title

• E02F9/2203

  Arrangements for controlling the attitude of actuators, e.g. speed, floating function · CPC title

• E02F9/2033

  Limiting the movement of frames or implements, e.g. to avoid collision between implements and the cabin (sub-groups of E02F3/431 of E02F3/435 take precedence; for turntables E02F9/123) · CPC title

• B60Y2200/412

  Excavators · CPC title