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Title:
WORK MACHINE TRANSMISSION CONTROL
Document Type and Number:
WIPO Patent Application WO/2007/066469
Kind Code:
A1
Abstract:
A work machine gear change controller for improving work efficiency and facilitating the setting by enabling arbitrary setting of a desired gear change condition in an automatic gear change mode depending on the situation of the work site. When a wheel loader is traveling, a settable speed range and setting operation guidance are displayed in an area (62) of a display (49), and a guidance inquiring whether the setting is NG or OK is displayed in an area (64). When the traveling speed reaches a settable speed change, the display is switched to a settable mode. When the operator depresses a setting switch (23) at a desired timing, a gear change control section (45) captures the then vehicle speed and speed ratio (or vehicle speed) and stores an adjustment value in an adjustment value storage section (43) so that the vehicle speed and speed ratio may be thresholds of gear change control in a normal gear change control steps (S535 to S545).

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Inventors:
TSUKADA HIDENOBU (JP)
NAKAMURA KAZUNORI (JP)
KOWATARI YOUICHI (JP)
YOSHIKAWA MASAKI (JP)
Application Number:
PCT/JP2006/322354
Publication Date:
June 14, 2007
Filing Date:
November 09, 2006
Export Citation:
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Assignee:
HITACHI CONSTRUCTION MACHINERY (JP)
TSUKADA HIDENOBU (JP)
NAKAMURA KAZUNORI (JP)
KOWATARI YOUICHI (JP)
YOSHIKAWA MASAKI (JP)
International Classes:
F16H61/10; F16H59/02; F16H59/44; F16H59/46; F16H61/682; F16H63/42
Foreign References:
JPH1061758A1998-03-06
JPH0650418A1994-02-22
JPS5997351A1984-06-05
JPH09303538A1997-11-25
JPH10175461A1998-06-30
JP2000329220A2000-11-30
JPH01188760A1989-07-28
Other References:
See also references of EP 1959169A4
Attorney, Agent or Firm:
KASUGA, Yuzuru (4-1 Nihonbashi-honcho 3-chome, Chuo-k, Tokyo 23, JP)
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