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Hydrostatic drive device

A driving equipment, hydrostatic technology, applied in mechanical equipment, fluid pressure actuation device, transmission control and other directions, can solve the problems of expensive, cost-effective, and achieve the effect of fast response time, small pressure loss, and improved speed constancy

Active Publication Date: 2014-08-20
VOITH PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The problem now is that the regulation of the required volume flow by means of a delivery flow regulator with a flow orifice is relatively complex because, for example, a large number of parts of the flow orifice, piping between components, hydraulic motors, generators themselves and so on work together
it is costly and expensive

Method used

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  • Hydrostatic drive device

Examples

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Embodiment Construction

[0014] In the drawing, a hydrostatic drive unit 1 for a generator 2 , in particular a synchronous generator 2 , can be identified. In this case, the synchronous generator 2 is intended to supply electrical power to a schematic on-board electrical system 3 of a rail vehicle 4 , shown only as a carriage. In this case, a drive motor, for example a diesel motor 5 , is used to drive the rail vehicle 4 , which also at least indirectly drives the servo-driven hydraulic pump 6 of the hydrostatic drive system 1 . In this case, the power and rotational speed of the diesel motor 5 are used to drive the rail vehicle 4 as required in the center of gravity. The drive of the servo drive hydraulic pump 6 is usually realized by an auxiliary drive. Therefore, the servo-driven hydraulic pump 6 is inevitably driven at a fluctuating rotational speed of the diesel motor 5 . However, since the rotational speed of the synchronous generator 2 is decisive for the stability of the on-board electrical ...

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Abstract

The invention relates to a hydrostatic drive device (1) for a generator (2), comprising a variable displacement pump (6) for generating a volumetric flow rate of a working medium; a constant motor (9), which is driven by the volumetric flow rate of the working medium, for driving the generator; and a flow regulator (7) with an orifice plate (8) for regulating the volumetric flow rate of the variable displacement pump. The invention is characterized in that a bypass (16) with a regulating valve (17) for a volumetric flow rate flowing through the bypass is arranged around the constant motor.

Description

technical field [0001] The invention relates to a hydrostatic drive device for a generator according to the type defined in detail in the preamble of claim 1 . The invention also relates to a method for operating such a hydrostatic drive. Furthermore, the invention relates to the use of a hydrostatic drive or a method for its operation. Background technique [0002] Hydrostatic drives are known from the general prior art. It is used, for example, to drive auxiliary machines. A typical application example of a hydrostatic drive is, for example, a drive for a generator, in particular a synchronous generator, for generating electrical power in an onboard electrical system, for example an onboard electrical system of a rail vehicle. Therefore, rail vehicles are typically driven via internal combustion engines. The internal combustion engine drives, via an auxiliary drive, for example directly or via a transmission connected downstream of the internal combustion engine, a ser...

Claims

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Application Information

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IPC IPC(8): F16H61/4052F16H61/433F16H61/47H02P9/06
CPCF16H2059/6876F16H61/4052H02P9/04F16H61/433F16H61/47F15B11/055
Inventor 弗里德·登特勒托马斯·施瓦布
Owner VOITH PATENT GMBH
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