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Axial piston machine with variable displacement volume, and hydraulic drivetrain having an axial piston machine

An axial piston machine and piston technology, which is used in machines/engines, liquid variable capacity machines, mechanical equipment, etc., can solve the problem of increasing the guide length, and achieve the effects of good efficiency, small structural volume, and expansion of the speed range.

Inactive Publication Date: 2014-08-20
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The guide length also cannot be increased arbitrarily (due to structural space and viscous losses)
A further disadvantage arises for the servomotor of the adjusting device at large swivel angles, since relatively high forces must be overcome in order to adjust the swivel cradle

Method used

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  • Axial piston machine with variable displacement volume, and hydraulic drivetrain having an axial piston machine
  • Axial piston machine with variable displacement volume, and hydraulic drivetrain having an axial piston machine
  • Axial piston machine with variable displacement volume, and hydraulic drivetrain having an axial piston machine

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Embodiment Construction

[0034] with the help of figure 1 , 2 and 3 illustrate the operating principle of the axial piston machine 18 in a swash plate construction according to the prior art. exist figure 1 The main components of the axial piston machine 18 are shown by way of example. The swivel cradle 2 can be mounted rotatably about a pivot point 26 , wherein the pivot point 26 can intersect the axis 24 . The cradle is also known as a slew plate or a slant plate. Above the axis 24 is shown an adjusting device 3 in the form of a (telescopic) adjusting piston, which is fixedly connected to a housing, not shown here. By adjusting the adjustment device 3, the cradle 2 is deflected relative to the axis 24, which can be achieved, for example, in figure 2 and 3 As seen in the cradle, the cradle is in figure 1The center is perpendicular to the axis 24 and accordingly has an inclination angle α of 90°. In this case, the adjusting device 3 is connected to the cradle 2 in such a way that a movement i...

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Abstract

The invention relates to an axial piston machine (18), with a housing (1), for pump and / or motor operation with a variably adjustable displacement volume, having a pivot cradle (2) which can be pivoted by a first adjustment device (3) within an angle range predefined by the first adjustment device (3) and which has at least one surface (22), and having a piston drum (7) which is arranged rotationally fixedly on an axis (24) and which has pistons (12, 120) arranged in the piston drum (7), wherein the pistons (12, 120) bear against the surface (22) of the pivot cradle (2) in such a way that pressure forces can be transmitted between the pistons (12, 120) and the pivot cradle (2). The axial piston machine (18) according to the invention furthermore has a second adjustment device (9, 16) which is movable in such a way that the displacement volume of the axial piston machine (18) can be varied in addition to the displacement volume variably adjustable by means of the first adjustment device (3).

Description

technical field [0001] The invention relates to a pump-operated and / or motor-operated axial piston machine with a variably adjustable displacement and to a hydraulic drive train with an axial piston machine according to the invention. Background technique [0002] Axial piston machines are used in principle to convert hydraulic work into mechanical work or vice versa. Accordingly, the axial piston machine is operated as a motor and / or as a pump or as a hydraulic transmission and is used in various fields of application. [0003] Fields of application for axial piston machines are, for example, in the motor vehicle sector in series or parallel hydraulic hybrid drive trains. In the case of a series hydraulic hybrid drive, as disclosed for example in the non-prepublished German application with document number 102011005356.5, at least one hydraulic piston machine is connected in series, for example, with the internal combustion engine. The hydraulic piston machine can be oper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B1/20F04B1/32
CPCF04B1/32F04B1/2014F04B1/20
Inventor A·马克D·布罗伊尔
Owner ROBERT BOSCH GMBH
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