Title:
HST TRAVELING SYSTEM OF WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2006/098179
Kind Code:
A1
Abstract:
An HST traveling system of a work machine capable of eliminating the need of a transmission and a propeller shaft, capable of traveling the work machine from a low speed to a high speed, and enabling the simplification of circuit configuration. A controller (31) calculates the target tilt amounts of hydraulic motors (10) and (20) by referring a vehicle body traveling speed (vehicle speed) obtained from signals detected by a rotation detector (20c) to control characteristics and controls tilt amount control means (10b) and (20b) of the hydraulic motors (10) and (20) and a clutch (15). Also, the controller changes over a traveling mode from a set speed to a low speed four-wheel drive for driving both of traveling devices (12) and (22) or a high speed two-wheel drive for driving only the traveling device (22) on the rear wheel side by zeroing the capacity of the hydraulic motor (10) on the front wheel side.
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Inventors:
UDAGAWA TSUTOMU (JP)
EGAWA EIJI (JP)
NAKAYAMA AKIRA (JP)
TAKIGUCHI KAZUO (JP)
TOYOOKA TSUKASA (JP)
SUGAYA MAKOTO (JP)
SATO KENSUKE (JP)
EGAWA EIJI (JP)
NAKAYAMA AKIRA (JP)
TAKIGUCHI KAZUO (JP)
TOYOOKA TSUKASA (JP)
SUGAYA MAKOTO (JP)
SATO KENSUKE (JP)
Application Number:
PCT/JP2006/304265
Publication Date:
September 21, 2006
Filing Date:
March 06, 2006
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACHINERY (JP)
UDAGAWA TSUTOMU (JP)
EGAWA EIJI (JP)
NAKAYAMA AKIRA (JP)
TAKIGUCHI KAZUO (JP)
TOYOOKA TSUKASA (JP)
SUGAYA MAKOTO (JP)
SATO KENSUKE (JP)
UDAGAWA TSUTOMU (JP)
EGAWA EIJI (JP)
NAKAYAMA AKIRA (JP)
TAKIGUCHI KAZUO (JP)
TOYOOKA TSUKASA (JP)
SUGAYA MAKOTO (JP)
SATO KENSUKE (JP)
International Classes:
B60K17/356; F16H45/00; F16H47/02; F16H61/44; F16H61/444; F16H61/452
Foreign References:
| JPS5923467U | 1984-02-14 | |||
| JPH09506056A | 1997-06-17 | |||
| JPS6118524A | 1986-01-27 | |||
| JPH04501992A | 1992-04-09 | |||
| JP2001271907A | 2001-10-05 | |||
| JPH11166623A | 1999-06-22 | |||
| JP2004338460A | 2004-12-02 |
Other References:
See also references of EP 1862345A4
Attorney, Agent or Firm:
Kasuga, Yuzuru (4-1 Nihonbashi-honcho 3-chom, Chuo-ku Tokyo 23, JP)
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