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Hydrostatic axial piston engine

一种轴向活塞机、活塞机的技术，应用在往复式活塞发动机、机械设备、发动机元件等方向，能够解决控制底部损坏等问题，达到避免损坏和毁坏的效果

Active Publication Date: 2015-03-25
LINDE HYDRAULICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During motor operation (in this case, pressure medium under pressure is supplied to the inlet connection, for example in such a way that the inlet connection is connected to a pressure accumulator), a force acts on the inlet connection in the control base due to the pressure prevailing in the inlet connection With a cylindrical surface, the force in the end region of the kidney-shaped input connection, which is characterized by a small radius, would exceed the permissible stresses in the material of the control base and could lead to damage to the control base

Method used

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Examples

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Embodiment Construction

[0027] exist figure 1 A hydrostatic axial piston machine 1 of the swash plate embodiment according to the prior art is shown in longitudinal section, which operates with an open circuit and is optimized with regard to pump operation.

[0028] The axial piston machine 1 has a cylinder 2 arranged rotatably about an axis of rotation D, which is provided with a plurality of piston recesses 3 arranged coaxially with the axis of rotation D and arranged on a partial circle TK, The piston recesses are preferably formed by cylindrical bores and in each case a transmission piston 4 is mounted so as to be displaceable in the longitudinal direction.

[0029] The cylinder 2 is supported in the axial direction with its end faces on a housing-fixed control surface 5 which is formed on a disk-shaped control base 6 which is fixed to the housing 7 in a non-rotatable manner. Or on the corresponding housing cover 7a of the housing 7. The control base 6 is equipped with kidney-shaped control slo...

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Abstract

The invention relates to a hydrostatic axial piston machine with a cylinder barrel and a control surface. A kidney-shaped input connector and a kidney-shaped output connector are configured in a control base. An exhaust chamber is connected with the input connector and the output connector alternately when the cylinder barrel rotates. The hydrostatic axial piston machine may operate as a pump and a motor. When the cylinder barrel is driven in the operation of the pump, the axial piston machine inhales a pressure medium with the input connector and conveys the pressure medium to the output connector. In the operation of the motor, the axial piston machine is driven by the pressure medium supplied by the input connector. The area of a sealing bridging portion is decreased in the area of the input connector on the control surface configured on the control base in order that hydrostatic unloading force is reduced when pressure is applied to the input connector. Therefore, in the operation of the motor, the pressing force of a pressure spring operatively connected with the cylinder barrel and / or pressed cylinder pressure retains pressure of the cylinder barrel on the control surface. Additionally or alternatively, the end portion of the kidney-shaped input connector has a transition contour flattened against a circular arc at a radially outer region.

Description

technical field [0001] The invention relates to a hydrostatic axial piston machine with a cylinder barrel arranged rotatably about an axis of rotation and a housing-fixed control surface formed on a control bottom, in which cylinder barrel at least one piston cavity is formed. Groove, in which a transmission piston supported on a travel disc is displaceable longitudinally, in which the cylinder barrel rests against the control surface, on which the kidney-shaped input connection and the kidney-shaped The output joint, when the cylinder rotates around the axis of rotation, the displacement chamber formed between the piston cavity and the transmission piston is alternately connected with the input joint and the output joint, the axial piston machine is in the same direction of rotation of the cylinder Can be operated as a pump and as a motor with the same flow direction of the pressure medium, wherein in pump operation the axial piston machine sucks in pressure medium via the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B1/20
CPCF02N7/00F04B1/2021F04B1/2035F01B3/0047F01B3/0058F04B1/20
Inventor L·克里特蒂安M·贝格曼
Owner LINDE HYDRAULICS
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