Title:
ホイール式作業車両
Document Type and Number:
Japanese Patent JP6872478
Kind Code:
B2
Abstract:
To provide a wheel type work vehicle which can suppress a control hunting caused by characteristics of a hydraulic system component.SOLUTION: A wheel type work vehicle comprises: a control valve 4 controlling a direction and a flow rate of a pressure oil supplied from a main hydraulic pump 2 to a travel hydraulic motor 3 on the basis of a travel operation pressure; and a control valve 6a generating the travel operation pressure inputted into the control valve 4. The work vehicle selectively switches between travel operation pressure control controlling the travel operation pressure and an engine revolution speed control controlling a revolution speed of an engine, on the basis of a difference between a target travel speed set by a cruise control setting switch 10 and an actual speed of a wheel shovel 201.SELECTED DRAWING: Figure 3
Inventors:
Kazuhiro Ouchi
Application Number:
JP2017254704A
Publication Date:
May 19, 2021
Filing Date:
December 28, 2017
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
E02F9/22; B60K31/00; E02F9/02; E02F9/20; F02D29/02; F02D29/04
Domestic Patent References:
| JP10147958A | ||||
| JP2008163669A | ||||
| JP2009041533A | ||||
| JP10311426A | ||||
| JP2008215084A | ||||
| JP4258571A | ||||
| JP10331679A | ||||
| JP2001295682A |
Foreign References:
| US20100138118 | ||||
| US20100106382 |
Attorney, Agent or Firm:
Kaichi International Patent Office