Construction machinery

The construction machine addresses the issue of reduced efficiency by enabling selective actuator operation based on obstacle detection and operator intent, ensuring safety and maintaining productivity.

JP7750718B2Active Publication Date: 2025-10-07YANMAR HLDG CO LTD
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Patent Information

Application Number
JP2021187875
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2021-11-18
Publication Date
2025-10-07
Estimated Expiration
2041-11-18

AI Technical Summary

Technical Problem

Existing construction machines, such as excavators, may reduce work efficiency by prohibiting all actuators when obstacles like workers are detected nearby, leading to potential contact with these obstacles.

Method used

A construction machine equipped with actuators, an operation unit, obstacle detection, a stopping unit, a determination unit, and a stop disabling unit that allows selective operation of actuators based on predetermined conditions to prevent contact with obstacles without reducing efficiency.

Benefits of technology

Prevents contact with surrounding obstacles while maintaining work efficiency by allowing selective actuator operation based on operator intent, thus enhancing safety and productivity.

✦ Generated by Eureka AI based on patent content.

Smart Images

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Patent Text Reader

Abstract

To provide a construction machine capable of preventing contact with surrounding obstacles without lowering work efficiency.SOLUTION: An electromagnetic proportional valve 65a, 65b, 65c, 6d stop operations of a plurality of actuators 60 when an obstacle is detected in a predetermined monitoring area A1 by an obstacle detection portion 8. A determination portion 71 determines whether or not a predetermined condition is satisfied. A stop invalidation portion 72 invalidates the stopping of the operation by the electromagnetic proportional valves 65b, 65c to a predetermined travel motor 22L among the plurality of actuators 60 when the determination portion 71 determines that the predetermined condition is satisfied.SELECTED DRAWING: Figure 4
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Citation Information

Patent Citations

  • Contact avoidance controller in working machine

    JP2007023486A

  • Shovel

    JP2020056300A

  • Shovel

    JP2020183624A

  • Construction machine

    JP2021050545A