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Title:
【考案の名称】油圧駆動車両のインチングブレ-キ制御回路
Document Type and Number:
Japanese Patent JPS609092
Kind Code:
Y2
Abstract:
A hydraulic circuit for a hydraulically driven vehicle comprising an engine, a variable displacement pump driven by the engine, a hydraulic motor connected with the variable displacement pump and driven thereby, the hydraulic motor having an output shaft connected thereto, a first fixed displacement pump driven by the engine, an inching brake valve connected with the first fixed displacement pump, a control valve connected with the output side of the inching brake valve for controlling the forward and reverse movement of the vehicle and speed thereof, the output side of which is connected with the variable displacement pump, a parking brake coupled with the output shaft of the hydraulic motor, the parking brake being normally applied by a spring and hydraulically released, a pilot operated first brake control valve connected with the parking brake, a manually operated pump connected with the first brake control valve and the inching brake valve, a pilot operated second brake control valve connected with the first brake control valve, a pilot port thereof being connected with the output side of the control valve, and a second fixed displacement pump driven by the engine and connected with the second brake control valve.

Inventors:
Kento Ariga
Koichi Morita
Application Number:
JP16267878U
Publication Date:
April 01, 1985
Filing Date:
November 28, 1978
Export Citation:
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Assignee:
KOMATSU LTD.
International Classes:
B60K17/10; B60T1/08; B60T7/12; B60T10/00; B60T11/10; B60T13/22; B60T15/36; B60W10/02; B60W10/12; B60W10/18; F15B11/044; F16H61/66; (IPC1-7): B60T13/22; B60T10/00
Attorney, Agent or Firm:
Yonehara Masaaki



 
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