公开(公告)号：US20200158140A1

公开(公告)日：2020-05-21

申请号：US16604888

申请日：2018-03-26

Applicant: Robert Bosch GmbH

Inventor： Alexandre Orth ,  Gottfried Hendrix ,  Markus Junker

IPC: F15B1/26 ,  F15B15/18

Abstract: An electrohydraulic system for use under water includes an electrohydraulic actuator and a container having an internal space provided for forming a volume which is enclosed from the environment and which is provided for receiving a hydraulic pressurized fluid. A hydraulic cylinder is provided in the internal space of the container, the inside of which is divided into a first cylinder chamber and a second cylinder chamber by a piston to which a first piston rod and a second piston rod are connected. The two active surfaces of the piston are the same or approximately the same size.

公开(公告)号：US10428841B2

公开(公告)日：2019-10-01

申请号：US15502734

申请日：2015-07-21

Applicant: Robert Bosch GmbH

Inventor： Reiner Knoell ,  Alexandre Orth ,  Alexander Koertgen ,  Gerard Swagten

IPC: F15B1/26 ,  E21B33/035 ,  F15B15/18 ,  F15B21/00 ,  E21B34/04

Abstract: An electrohydraulic system for use at great water depths includes a vessel, a hydrostatic machine, and an electric machine. The vessel has an interior space configured to form a volume that is closed off with respect to the surroundings and that accommodates a hydraulic pressure fluid. The vessel includes a compensation piston configured to subject the hydraulic pressure fluid in the interior space to at least approximately the pressure prevailing in the surroundings. The hydrostatic machine is configured to be operated as a pump. The electric machine is mechanically coupled to the hydrostatic machine and operates as an electric motor in order to operate the hydrostatic machine as a pump. The hydrostatic machine and the electric machine are arranged in the interior space of the vessel. The compact electrohydraulic system fits on existing installations and on new installations. The electrohydraulic system also includes a compact process valve.

公开(公告)号：US20180050776A1

公开(公告)日：2018-02-22

申请号：US15553675

申请日：2016-02-25

Applicant: Robert Bosch GmbH

Inventor： Johannes Schunder ,  Alexandre Orth ,  Tor Eivind Jensen ,  Royce Gerngross

IPC: B63G8/08 ,  F16H61/42 ,  F16H39/08 ,  F16H61/4192

CPC classification number: B63G8/08 ,  B63G8/001 ,  B63G2008/004 ,  B63G2008/005 ,  F16H39/08 ,  F16H61/4192 ,  F16H61/42

Abstract: An electro-hydraulic compact drive for underwater use and for driving an output element includes a hydraulic motor, a hydraulic pump, and an electric motor as components of the electro-hydraulic compact drive. The hydraulic motor has an output shaft. The hydraulic pump supplies the hydraulic motor with hydraulic fluid via a working line. The hydraulic pump is driven by the electric motor. The components of the electro-hydraulic compact drive are located in a closed container filled with a hydraulic fluid. The container has an opening for coupling the output shaft of the hydraulic motor to the output element. The electro-hydraulic compact drive forms a closed unit that contains the complete electric motor/hydraulic pump/hydraulic motor arrangement. The compact drive combines the advantages of the high power density of hydraulics with a decentralized electric direct drive. The handling of the drive is simplified, thus also simplifying the control of underwater vehicles and machines.