Work management system and work machine

Patent metadata

Field	Value
Publication number	US-2024125096-A1
Application number	US-202218277231-A
Country	US
Kind code	A1
Filing date	Mar 29, 2022
Priority date	Jun 4, 2021
Publication date	Apr 18, 2024
Grant date	—

Abstract

An object of the present invention is to provide a work management system that enables efficient extraction of approach events that are likely to result in contact between a work machine and a worker. For this object, a management server assesses whether or not there is approach between a work machine and a worker, on the basis of positional information about the work machine measured by a work machine position measuring apparatus, and positional information about the worker measured by a worker position measuring apparatus, and, when assessing that there is approach, assesses an approached state of the approach from a state of the work machine measured by a work machine state measuring apparatus at the time of the assessment of the approach, on the basis of a preset approached state definition, and records the state of the work machine measured at the time of the assessment of the approach, in association with the approached state, and outputs the state of the work machine to a display apparatus in association with the approached state.

First claim

1 . A work management system comprising:
a management server; and a display apparatus that displays information outputted from the management server, wherein the management server is configured to assess whether or not there is approach between a work machine and a worker who performs work near the work machine, on a basis of positional information about the work machine measured by a work machine position measuring apparatus that measures the positional information about the work machine, and positional information about the worker measured by a worker position measuring apparatus that measures the positional information about the worker, and, when assessing that there is approach, assess an approached state of the approach from a state of the work machine measured by a work machine state measuring apparatus that measures the state of the work machine at a time of the assessment of the approach, on a basis of a preset approached state definition, and record the state of the work machine measured at the time of the assessment of the approach, in association with the approached state, and output the state of the work machine to the display apparatus in association with the approached state.

2 . The work management system according to claim 1 , wherein
the work machine state measuring apparatus measures a movable state of the work machine.

3 . The work management system according to claim 1 , wherein
the work machine has a front device having a plurality of joints, and the work machine state measuring apparatus measures each angle of the plurality of joints.

4 . The work management system according to claim 1 , wherein
the work machine has a front device having a plurality of joints, and the work machine state measuring apparatus measures a travelling velocity of the work machine, and each pivoting velocity of the plurality of joints.

5 . The work management system according to claim 1 , wherein
the work management system includes an avoiding apparatus that causes the work machine and the worker to avoid contact therebetween, and the management server is configured to assess the approached state from the state of the work machine measured at the time of the assessment of the approach, and an actuation status of the avoiding apparatus at the time of the assessment of the approach, on the basis of the approached state definition.

6 . The work management system according to claim 5 , wherein
the avoiding apparatus includes an alert apparatus that issues an alert to an operator of the work machine or the worker or a deceleration controller that decelerates or stops the work machine.

7 . The work management system according to claim 1 , wherein
the work management system includes an image-capturing apparatus that captures an image of the work machine and the worker, and the management server is configured to, when assessing that there is the approach, record an image of the work machine and the worker captured with the image-capturing apparatus at the time of the assessment of the approach, in association with the approached state, and output the image to the display apparatus.

8 . The work management system according to claim 1 , wherein
the management server is configured to, when assessing that there is the approach, create a reproduction video that visualizes actions of the work machine and the worker on a basis of the positional information about the work machine, the positional information about the worker, and the state of the work machine that are measured at the time of the assessment of the approach, record the reproduction video in association with the approached state, and output the reproduction video to the display apparatus.

9 . The work management system according to claim 1 , wherein
the management server is configured to, when assessing that there is the approach, calculate a degree of fault of an operator of the work machine and a degree of fault of the worker regarding an occurrence of the approach on a basis of measurement information of the work machine position measuring apparatus, the worker position measuring apparatus, and the work machine state measuring apparatus at the time of the assessment of the approach, record the degrees of fault in association with the approached state, and output the degrees of fault to the display apparatus.

10 . The work management system according to claim 1 , wherein
the management server is configured to output a command according to the approached state to an avoiding apparatus that causes the work machine and the worker to avoid contact therebetween.

11 . The work management system according to claim 1 , wherein
the approached state definition includes a state where the worker approaches the work machine in a movable state from a blind spot.

12 . A work machine comprising:
a management server; and a display apparatus that displays information outputted from the management server, wherein the management server is configured to assess whether there is approach between the work machine and a worker who performs work near the work machine, on a basis of positional information about the work machine measured by a work machine position measuring apparatus that measures the positional information about the work machine, and positional information about the worker measured by a worker position measuring apparatus that measures the positional information about the worker, and, when assessing that there is approach, assess an approached state of the approach from a state of the work machine measured by a work machine state measuring apparatus that measures the state of the work machine at a time of the assessment of the approach, on a basis of a preset approached state definition, and record the state of the work machine measured at the time of the assessment of the approach, in association with the approached state, and output the state of the work machine to the display apparatus.

Assignees

• Hitachi Construction Mach Co

Inventors

• Kanazawa Akira
• Narikawa Ryu
• Yamamoto Shinjirou
• Chiba Takaaki
• Imura Shinya

Classifications

• E02F9/265

  with follow-up actions (e.g. control signals sent to actuate the work tool) · 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

• E02F9/24 Primary

  Safety devices {, e.g. for preventing overload (E02F9/226 takes precedence)} · CPC title

• E02F9/261 Primary

  Surveying the work-site to be treated · CPC title

• E02F9/2054

  Fleet management · CPC title