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Patent Searching and Data


Title:
タンデムポンプユニット及び作業車輌
Document Type and Number:
Japanese Patent JP5702156
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To effectively prevent a temperature rise of stored oil in a first and second pump spaces storing a first and second hydraulic pumps, while reducing a cost through reduction of the number of parts.SOLUTION: A single relief valve setting hydraulic pressures of both of charge oil passages for the first and second hydraulic pumps, is provided in a port block positioned between the first and second hydraulic pumps in the axial direction. Relief oil from the relief valve is guided into both of the first and second pump spaces, and a first and second pump side drain ports for opening outside the first and second pump spaces, respectively, are provided.

Inventors:
Tomoyuki Tsuji
Koji Kiyooka
Application Number:
JP2011002140A
Publication Date:
April 15, 2015
Filing Date:
January 07, 2011
Export Citation:
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Assignee:
Yanmar Co., Ltd.
International Classes:
F04B23/06; B60K17/10; F04B1/22; F04B53/08; F16H39/02
Domestic Patent References:
JP2001116107A
JP2005054964A
JP2005008063A
Attorney, Agent or Firm:
Suzuki Katsuto
Minoru Ohnaka
Nobuo Ouchi