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Eccentric drive mechanism for volumetric unidirectional pumps

A technology of eccentric drive and drive mechanism, which is applied in the direction of machines/engines, liquid variable displacement machines, pumps, etc., which can solve the problems of not allowing the formation of sufficient supporting lubricant film, etc., and achieve the effect of reliable sliding lubrication and effective sealing

Active Publication Date: 2010-04-21
贝恩哈尔·弗雷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, under corresponding high pressure conditions, at least in addition to the continuous relative rotational movement, an oscillating state of motion with a static state predominates between the bearing surfaces of the radial bearing and does not allow in practice the formation of a fully supported Hydrodynamic Lubricant Film

Method used

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  • Eccentric drive mechanism for volumetric unidirectional pumps
  • Eccentric drive mechanism for volumetric unidirectional pumps
  • Eccentric drive mechanism for volumetric unidirectional pumps

Examples

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Embodiment Construction

[0030] figure 1 and 2 The radial-piston machine is a five-cylinder pump with cylinder-piston units Z1 to Z5 driven by a shaft W, arranged coaxially with the axis X-X of the shaft W and evenly distributed on its periphery . An eccentric drive, not shown in detail, is located in the central housing GZ. The drive torque is introduced via a stub shaft WS from a motor, not shown.

[0031] image 3 and 4 The eccentric drive mechanism shown in includes a stroke member HG rotatably fixedly connected to the shaft W and having an eccentric stroke bearing HL relative to the axis XX of the shaft. The stroke bearing HL connects the stroke member HG to a coupling member KG which does not take part in the rotational movement and which in turn is connected via a radial bearing QL to the drive for the oscillating delivery of a piston-cylinder unit On a pressure member of the mechanism. In a preferred embodiment of the invention, the stroke member is a simple eccentric disc which is rota...

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Abstract

The invention relates to an eccentric drive mechanism for volumetric pumps or motors, comprising the following features: a) at least one stroke member (HG), which is rotationally fixed to the shaft (W) of the crank gear and has at least one stroke bearing (HL) that is eccentric in relation to the axis (XX) of the shaft; b) the stroke bearing (HL) connects the stroke member (HG) to a coupling member (KG) that plays no part in the rotational displacement, said member being connected to at least one pressure member (DG) for the oscillating delivery drive mechanism of at least one piston-cylinderunit by means of a transversal bearing (QL); c) at least one pressure delivery source (DQ) for lubricant, which is connected on the output side to the transversal bearing (QL) via a system of channels;d) starting from a connection channel (KA) that is connected to the pressure delivery source (DQ), the channel system comprises a first channel (K1) running through the stroke member (HG) into the st roke bearing (HL) and at least one second channel (K2) running from said stroke bearing through the coupling member (KG) into the transversal bearing (QL).

Description

technical field [0001] The invention relates to an eccentric drive for volume-acting unidirectional pumps. Such drive mechanisms are well known in the art. Background technique [0002] A stroke member is rotatably fixedly connected to the shaft of the crank mechanism such that its stroke bearing is eccentric with respect to the axis of the shaft, for example, the stroke member may be formed as a crank plug of a custom crankshaft (crank spigot), the connecting member can be formed as a connecting rod, and the pressure member can be formed as a piston connected to the connecting rod by a piston pin. Together the crank plug / rod bearing and piston pin bearing form a support with a degree of translational freedom directed transversely to the hub (ie a radial bearing). A system of channels or holes can then be considered to supply lubricating fluid to the radial bearings, extending from a pressure supply source through the crankshaft and connecting rod to the piston pin. The l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B1/04F04B27/04F04B9/04
CPCF04B1/0413F04B27/0414F04B9/045
Inventor 贝恩哈尔·弗雷
Owner 贝恩哈尔·弗雷
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