Title:
ELECTRICITY-LIQUID PRESSURE APPARATUS OF RECIPROCAL LIQUID PRESSURE MOTOR
Document Type and Number:
Japanese Patent JPS60157501
Kind Code:
A
Abstract:
An electrohydraulic arrangement (10) for controlling a double-acting hydraulic motor (11) is proposed, the two sides (14, 15) of which hydraulic motor (11) can be activated independently of one another in each case via an electrohydraulically actuated 3-way continuous valve (16, 17) in spool type of construction. The continuous valves (16, 17) are designed as position-controlled built-in valves and are each activated by a 4/4 proportional pilot valve (43, 63) with safety position (46, 46'). The pilot valves (43, 63) are connected via separate electrical channels (68, 69) to an electronic control unit (33) which works out control variables in accordance with the respective drive task at the hydraulic motor (11) according to programmed control instructions. With a minimum of electromechanical transducers (53, 53', 61) and valves (16, 17) dependent upon nominal size, a multiplicity of additional functions such as differential connection, fail-safe function, power limiting, cavitation avoidance or mass-load braking can be realised.
Inventors:
FUORUKUMAARU ROITONERU
Application Number:
JP26867084A
Publication Date:
August 17, 1985
Filing Date:
December 21, 1984
Export Citation:
Assignee:
BOSCH GMBH ROBERT
International Classes:
F15B11/024; B29C45/67; B29C45/82; F15B11/02; F15B11/08; F15B20/00; F15B21/02; F15B21/08; F16K37/00; (IPC1-7): F15B11/02; F15B20/00; F15B21/02
Foreign References:
| DE2357274A1 | 1975-01-16 | |||
| DE3011088A1 | 1980-10-09 |
Attorney, Agent or Firm:
Osamu Nakahira