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Adjustment device for a hydrostatic piston machine, and hydrostatic axial piston machine

A technology of axial piston machine and adjusting device, which is applied in the direction of fluid pressure actuating device, machine/engine, liquid variable capacity machine, etc., can solve the problems of large structural length and complex structure of adjusting device, etc. The effect of low equipment technical expenses and increased work pressure

Active Publication Date: 2015-12-23
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The disadvantage of the known solution is that the adjustment device is very complicated to construct due to the spring rod penetrating through the adjustment piston and also has a great overall length

Method used

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  • Adjustment device for a hydrostatic piston machine, and hydrostatic axial piston machine
  • Adjustment device for a hydrostatic piston machine, and hydrostatic axial piston machine
  • Adjustment device for a hydrostatic piston machine, and hydrostatic axial piston machine

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Embodiment Construction

[0037] figure 1 The hydrostatic axial piston machine shown in is designed as an axial piston pump. The hydrostatic axial piston machine has a pump housing 11 , which is formed from a basin-shaped housing main part 12 and a connecting plate 13 , and in which a transmission 14 is accommodated. Belonging to this transmission are a cylindrical drum 15, a transmission shaft 16 and a pivoting cradle 19 adjustable in its angular position relative to the axis of the transmission shaft, which is supported by two tapered roller bearings 17 and 18 on The pump housing, and the cylindrical drum 15 is anti-rotationally coupled with the drive shaft. In the cylindrical drum 15 a plurality of plungers 20 are guided parallel to the axis of the drive shaft, said plungers each delimiting a working chamber 21 . The supply and discharge of pressure medium to the working chamber 21 is controlled via two control junctions 22 and 23 which are formed in a control plate 24 held in a rotationally fixed...

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PUM

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Abstract

An adjustment device for regulating the torque of a hydrostatic piston machine with adjustable swept volume, comprises an adjustment piston delimiting an adjustment chamber, a regulation valve defining a valve bore and including a valve slide positioned in the valve bore that controls inflow and outflow of pressure medium, and first and second feedback springs configured to exert feedback force on the valve slide in first and second displacement directions dependent on a position of the adjustment piston. The device further includes a regulation spring configured to exert a force on the valve slide in a second displacement direction. During an adjustment of the adjustment piston in a direction of maximum swept volume of the piston machine, beyond a particular position of the adjustment piston, the first and second feedback springs exert an increased force on the valve slide determined only by a spring constant of the first feedback spring.

Description

technical field [0001] The invention relates to an adjusting device, which is provided for a hydrostatic machine, in particular a hydrostatic axial piston machine, and has the features stated in the preamble of claim 1, and to an adjusting device designed with such an adjustment Hydrostatic axial piston machines for devices, especially axial piston pumps. Background technique [0002] For regulating a hydrostatic piston machine, an adjusting device with an adjusting piston and an adjusting valve is known, with which it is ensured that the torque absorbed or released by the piston machine does not exceed a certain value or value range. Such regulation is called torque regulation, but is also called power regulation, where the latter disregards the fact that the rotational speed is also integrated into the power of the machine. Regulating valves are called torque regulators, but are also called power regulators. There is a power regulation with which the product of the press...

Claims

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Application Information

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IPC IPC(8): F04B1/32
CPCF04B1/324F04B1/2042F15B9/09F15B9/10
Inventor B.魏欣A.阿佩尔格R.鲁迪克
Owner ROBERT BOSCH GMBH
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