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Electrohydraulic compact equipment

A compact, equipment technology, used in mechanical equipment, machines/engines, liquid variable capacity machinery, etc., can solve the problems of churning loss, carry-in, loud sound, etc., to reduce sound emissions, avoid churning loss, and high protection effect of level

Active Publication Date: 2020-09-08
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the electric motor is an under-oil motor, which causes churning losses and oil turbulence and thus entrainment of air in the oil
In addition, the under oil motor transmits the vibration as solid sound to the tank wall through the hydraulic oil, so it is also louder for such a compact device

Method used

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  • Electrohydraulic compact equipment
  • Electrohydraulic compact equipment
  • Electrohydraulic compact equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] figure 1 A circuit diagram of a compact device according to the invention according to a first exemplary embodiment is shown. The compact device has a drive unit with an electric motor M and a hydrostatic pump 1 . The electric motor M is operated with a frequency converter 2 . Furthermore, the compact device has a tank T for a pressure medium, for example hydraulic oil.

[0037] The frequency converter 2 is arranged between the electrical power supply 4 and the electrical line 6 , so that the frequency of the electric motor M is regulated via the electrical line 6 and thus the electric motor is supplied with speed-regulated power. Via the shaft 8 , the pump 1 is thus driven variable in speed by the electric motor M. In this case, the pump 1 sucks in pressure medium from a tank T via a suction line 10 and delivers it via a pressure or supply line 12 to a load connection 14 on the high-pressure side of the compact device. A load, which can be a cylinder, for example, ...

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PUM

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Abstract

The invention relates to a hydrostatic compact device with an electric motor and a pump that conveys pressure medium from a tank to a load connection. The tank is circular in shape, and the electric motor and the pump are collectively surrounded by the tank.

Description

technical field [0001] The invention relates to an electrohydraulic compact device. Such a device has an electric motor and a pump, which conveys pressure medium from a tank to a hydrostatic load, which is connected to the compact device. Background technique [0002] In the applicant's printed data sheet "Modular standardpower units Type ABSKG" under the number RE 51013, version 11.14, an electrohydraulic modular plant is disclosed, in which it is possible to simply configure, for example, motors, pumps, filters, etc. Make changes and combinations. The use of standard products makes the concept less expensive when higher variations are required in the case of components. [0003] Such devices involve relatively high installation costs, for example when laying pipelines. The modular construction method here therefore fails to take advantage of the above-mentioned advantages when a higher number of identical devices is required. A further disadvantage is that the device i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B17/03F04B23/02F04B53/08F04B53/16F15B21/044
CPCF04B23/021F04B53/08F04B53/16F04B17/03F15B21/044
Inventor A.京德
Owner ROBERT BOSCH GMBH