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Eccentric drive mechanism for volumetric pumps or motors

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: 2006-10-11
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 pumps or motors
  • Eccentric drive mechanism for volumetric pumps or motors
  • Eccentric drive mechanism for volumetric pumps or motors

Examples

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Embodiment Construction

[0013] figure 1 and 2 The radial piston machine is a five-cylinder pump having cylinder-piston units (Z1) to (Z5) driven by a shaft (W) coaxially distributed with the axis (X-X) of the shaft (W) ground 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 not shown motor.

[0014] image 3 and 4 The eccentric drive mechanism shown in includes a stroke member (HG) rotatably fixedly connected to a 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 a piston-cylinder On a pressure member of the drive mechanism of the unit's oscillating delivery. In a preferred embodiment of the invention, the stroke member is a simp...

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Abstract

The present invention relates to an eccentric drive mechanism for volume-action pumps or motors, comprising the following features: a) at least one stroke member (HG) rotatably fixedly connected to the shaft (W) of the crank mechanism and having at least a stroke bearing (HL) eccentric with respect to this axis (XX) of the shaft; b) the stroke bearing (HL) connects the stroke member (HG) to a coupling member (KG) which does not participate in rotational movement, said member is in turn connected via a radial bearing (QL) to at least one pressure member (DG) of the drive mechanism for the oscillating transmission of at least one piston-cylinder unit; c) providing a pressure supply of at least one lubricant source (DQ), which on the output side is connected to the radial bearing (QL) by a channel system; d) starting from a connecting channel (KA) connected to the pressure supply source (DQ), the channel system comprising: at least one A first channel (K1) extending through the stroke member (HG) to the stroke bearing (HL); and at least one second channel (K2) extending from said stroke bearing through the coupling member (KG) to the centripetal bearing (QL).

Description

technical field [0001] The invention relates to an eccentric drive mechanism for a volumetrically actioning pump or motor having the features stated in the preamble of claim 1 . 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 sou...

Claims

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Application Information

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IPC IPC(8): F04B1/04F04B9/04F04B27/04
CPCF04B1/0413F04B9/045F04B27/0414
Inventor 贝恩哈尔·弗雷
Owner 贝恩哈尔·弗雷
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