EXCAVATOR - SUMITOMO CONSTRUCTION MACHINERY CO LTD

Title:

EXCAVATOR

Document Type and Number:

WIPO Patent Application WO/2021/029399

Kind Code:

A1

Abstract:

This excavator (100) is provided with: a lower traveling body (1); an upper rotating body (3) mounted on the lower traveling body (1); an engine (11) mounted on the upper rotating body (3); a main pump (14) driven by the engine (11); an attachment attached to the upper rotating body (3); an operation device (26) for operating the attachment; and a controller (30) that controls the discharge volume of the main pump (14) by negative control. The controller (30) is configured so as to change the control characteristics of the negative control in accordance with the operation content of the operation device (26).

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Inventors:

NISHIKAWARA RIICHI (JP)

Application Number:

PCT/JP2020/030520

Publication Date:

February 18, 2021

Filing Date:

August 07, 2020

Export Citation:

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Assignee:

SUMITOMO CONSTRUCTION MACHINERY CO LTD (JP)

International Classes:

E02F9/22; F15B11/00

Domestic Patent References:

WO2018105527A1

2018-06-14

Foreign References:

JP2015059591A	2015-03-30
JP2014005866A	2014-01-16
JPS4843105B1	1973-12-17
JP2019148139A	2019-09-05

Other References: