Title:
BRAKE SYSTEM OF ELECTRICALLY DRIVEN DUMP TRUCK
Document Type and Number:
WIPO Patent Application WO/2008/029593
Kind Code:
A1
Abstract:
A brake system of an electrically driven dump truck which can enhance brake power
of a brake while sustaining fine operation performance of the brake. The brake
system of an electrically driven dump truck, comprising a generator (11) driven
by an engine (10), traveling motors (13R, 13L) driven with power generated from
the generator (11), and hydraulic brakes (20R, 20L, 21L, 21R) acted on by operation
of a brake pedal (18), is further provided with a hydraulic sensor (22) for detecting
a working hydraulic pressure generated depending on the stepping amount of the
brake pedal (18), and a controller (14) for making the traveling motors (13R,
13L) operate as a generator type retarder when the working hydraulic pressure
P detected by the hydraulic sensor (22) is equal to or higher than a preset level
P1 (i.e. when the stepping amount of the brake pedal (18) is equal to or larger than
a predetermined value θ1).
Inventors:
IKEDA, Jun (Tsuchiura Works, Intellectual Property Department, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 3000013, JP)
池田 純 (〒13 茨城県土浦市神立町６５０番地 日立建機株式会社土浦工場 知的財産部内 Ibaraki, 3000013, JP)
YAGYU, Takashi (Tsuchiura Works, Intellectual Property Department, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 3000013, JP)
柳生 隆 (〒13 茨城県土浦市神立町６５０番地 日立建機株式会社土浦工場 知的財産部内 Ibaraki, 3000013, JP)
池田 純 (〒13 茨城県土浦市神立町６５０番地 日立建機株式会社土浦工場 知的財産部内 Ibaraki, 3000013, JP)
YAGYU, Takashi (Tsuchiura Works, Intellectual Property Department, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 3000013, JP)
柳生 隆 (〒13 茨城県土浦市神立町６５０番地 日立建機株式会社土浦工場 知的財産部内 Ibaraki, 3000013, JP)
Application Number:
JP2007/065765
Publication Date:
March 13, 2008
Filing Date:
August 10, 2007
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACHINERY CO., LTD. (5-1 Koraku 2-chome, Bunkyo-ku Tokyo, 04, 1120004, JP)
日立建機株式会社 (〒04 東京都文京区後楽二丁目５番１号 Tokyo, 1120004, JP)
IKEDA, Jun (Tsuchiura Works, Intellectual Property Department, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 3000013, JP)
池田 純 (〒13 茨城県土浦市神立町６５０番地 日立建機株式会社土浦工場 知的財産部内 Ibaraki, 3000013, JP)
YAGYU, Takashi (Tsuchiura Works, Intellectual Property Department, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 3000013, JP)
日立建機株式会社 (〒04 東京都文京区後楽二丁目５番１号 Tokyo, 1120004, JP)
IKEDA, Jun (Tsuchiura Works, Intellectual Property Department, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 3000013, JP)
池田 純 (〒13 茨城県土浦市神立町６５０番地 日立建機株式会社土浦工場 知的財産部内 Ibaraki, 3000013, JP)
YAGYU, Takashi (Tsuchiura Works, Intellectual Property Department, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 3000013, JP)
International Classes:
B60T8/17; B60K6/46; B60L7/06; B60L9/18; B60L11/08; B60T8/28; B60W10/18; B60W20/00; B60W30/18
Attorney, Agent or Firm:
KASUGA, Yuzuru (Torii-nihonbashi Bldg, 4-1 Nihonbashi-honcho 3-chome, Chuo-k, Tokyo 23, 1030023, JP)