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Electric hydraulic driving device, driving assembly, fluid machine and method thereof

A technology for driving devices and driving components, applied in fluid pressure actuating devices, engines, engine functions, etc., can solve problems such as increased risk of rotor blades, and achieve the effect of improving equipment availability and safety

Inactive Publication Date: 2018-10-09
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there is an increased risk that the rotor blades can no longer turn out the wind in a failed store

Method used

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  • Electric hydraulic driving device, driving assembly, fluid machine and method thereof
  • Electric hydraulic driving device, driving assembly, fluid machine and method thereof
  • Electric hydraulic driving device, driving assembly, fluid machine and method thereof

Examples

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Embodiment Construction

[0049] according to figure 1 , schematically shows the wind energy installation 1 with dashed lines. The wind turbine has an electrohydraulic drive 2 in its hub for the respective rotatable rotor blade. The drive has an electric motor 4 and a hydraulic press 6 . The motor 4 is, for example, a servo machine or a servo motor. The hydraulic machine 6 has a through-gear through which a drive shaft 8 connected to the machine 4 is guided. Furthermore, the propeller shaft 8 is connected to a transmission 10 . A further drive shaft 12 connected to the transmission 10 serves here to drive the rotatable rotor blades. Furthermore, the transmission shaft 12 can also be driven by the rotor blades. The motor 4 is connected to a power source 16 via a drive regulator 14 . The drive regulator 14 is arranged, for example, in the hub of the wind energy installation 1 and is connected via a swivel connection 18 to the grid of the pod.

[0050] according to figure 1 , the drive device 2 al...

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PUM

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Abstract

The invention relates to an electric hydraulic driving device which is used for rotatable rotor blades of wind energy equipment. The driving device is provided with a hydraulic machine and a motor forrotating the rotor blades. The hydraulic machine and the motor can be commonly used for rotating the rotor blades.

Description

technical field [0001] The invention relates to an electrohydraulic drive according to the preamble of claim 1 , which can be used, for example, in a wind energy installation or in a fluid machine with adjustable rotor blades. Furthermore, the invention relates to a drive assembly with a plurality of electric drives. Furthermore, the invention relates to a wind energy installation with such a drive and to a method for using such a drive. Background technique [0002] A wind energy installation is known from the prior art which has a tower on which a pod is rotatably arranged. A hub, on which the rotor blades are arranged, is in turn fastened rotatably to the pod. In this case, the angle or pitch of the rotor blades about their respective longitudinal axis can be adjusted. For the adjustment, hydraulic blade adjustment systems (H-pitch) or electric blade adjustment systems (E-pitch), for example, can be used. In a hydraulic solution, for example, a central unit (for examp...

Claims

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Application Information

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IPC IPC(8): F15B11/00F03D1/06F03D7/02
CPCF03D1/06F03D7/02F15B11/00F03D7/0224F05B2260/79F05B2270/604F15B2211/20569F15B2211/212Y02E10/72
Inventor 上鹤幸夫K.艾泽曼
Owner ROBERT BOSCH GMBH