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Hydrostatic circuit with secondary regulation

A hydraulic circuit and static technology, applied to components with teeth, belts/chains/gears, mechanical equipment, etc., can solve problems such as the influence of static hydraulic circuits on efficiency

Active Publication Date: 2017-03-01
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the valuable kinetic energy of the load driven by the secondary unit can no longer be recovered for reuse, which has a negative impact on the efficiency of the hydrostatic circuit

Method used

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  • Hydrostatic circuit with secondary regulation
  • Hydrostatic circuit with secondary regulation
  • Hydrostatic circuit with secondary regulation

Examples

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no. 1 example

[0034] In a practical arrangement of the secondary units, generally no greater torque is required in the high speed or high rotational speed range of the individual secondary units 4 , 6 . Therefore, it is no longer necessary to provide a higher or highest accumulator pressure at higher real-time or instantaneous rotational speeds. Here, a regulating unit 10 is provided according to the embodiment of the invention. For a better understanding, refer to figure 2 , 3 and 4. Although the characteristic curves shown there refer to the first exemplary embodiment, the following principles also apply in principle to any type of secondary unit and thus to all exemplary embodiments. Now exemplarily with the help of secondary unit 4 (see figure 1 as well as Figure 5 and 6 ) for illustration.

[0035] figure 2 The torque setpoint characteristic of the secondary unit 4 as a function of its speed and the speed-dependent pressure setpoint characteristic of the secondary unit 4 whi...

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Abstract

The invention relates to a hydrostatic hydraulic circuit with secondary regulation. The secondary regulated hydrostatic circuit includes a primary unit for supplying pressure medium, at least one secondary unit for accelerating or braking the load, and a reservoir via which the hydrostatic pressure is supplied. The circuit applies reservoir pressure. By means of a regulating unit of the hydrostatic circuit, the reservoir pressure can be adjusted to its instantaneous pressure nominal value in the case of only one secondary unit, or stored in the case of several secondary units. The pressure may be adjusted to the highest instantaneous pressure rating of the plurality of secondary units.

Description

technical field [0001] The invention relates to a hydrostatic circuit. Background technique [0002] According to the principle for secondary regulation of hydrostatic hydraulic circuits, the hydraulic consumers of such circuits (referred to below as secondary units) operate on a constant pressure network. The secondary control refers to a rotational speed control loop which has, as a free variable, the geometric displacement volume or the swivel angle or the eccentricity of the secondary unit. In this case, the torque of the secondary unit is proportional to the set geometric displacement volume. where the secondary regulating unit spontaneously "finds" the required torque at a given rotational speed in order to be able to operate at a given operating pressure (reservoir pressure) applied via the hydrostatic accumulator of the circuit keep the given speed. [0003] Such a secondary regulated hydrostatic circuit comprises a primary unit, for example an adjustable pump uni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/4096F16H61/46F16H61/472
CPCF16H61/4096F16H2059/6853F16H2059/6861F16H2059/6892F16H61/4148F16H61/47
Inventor S·穆齐勒S·奥施曼
Owner ROBERT BOSCH GMBH