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Adjusting devices for hydrostatic piston machines and hydrostatic axial piston machines

A technology of adjusting device and piston engine, which is applied in the direction of machine/engine, liquid variable-capacity machinery, mechanical equipment, etc., can solve the problems of large structural length and complex structure of adjusting device, and achieves a small structural length and low equipment technical expenses. Effect

Active Publication Date: 2019-09-17
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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  • Adjusting devices for hydrostatic piston machines and hydrostatic axial piston machines
  • Adjusting devices for hydrostatic piston machines and hydrostatic axial piston machines
  • Adjusting devices for hydrostatic piston machines and hydrostatic axial piston machines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] figure 1The 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 torque of a hydrostatic piston machine includes a piston delimiting a chamber, a regulation valve, feedback and regulation springs, and a member. The valve has a displaceable slide to enable pressure medium to flow into or out of the chamber, a measurement surface acted on by pressure from the piston machine, and a bore open to the chamber, a side facing the chamber acted on by a chamber pressure in a first direction. The feedback spring exerts force on the slide in the first direction, depending on a position of the piston. The regulation spring exerts force on the slide in a second direction opposite the first direction. The member has a surface as large as the side of the bore such that the chamber pressure exerts force on the slide in the second direction.

Description

technical field [0001] The invention relates to an adjusting device, which is provided for a hydrostatic machine, in particular for a hydrostatic axial piston machine, having an adjusting piston, an adjusting valve and at least one return spring, the adjusting piston delimiting an adjusting chamber, The regulating valve has a valve stem in a valve bore of the valve housing, with which the inflow of pressure medium into the regulating chamber and the outflow of pressure medium from the regulating chamber can be controlled, and the valve stem has a measuring surface, On the measuring surface, the valve stem can be acted upon by the operating pressure of the piston machine in a first displacement direction, a feedback force which is dependent on the position of the adjusting piston is exerted on the valve stem by the feedback spring. Furthermore, the invention relates to a hydrostatic axial piston machine, in particular an axial piston pump, provided with such an adjusting device...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B1/32
Inventor A.阿佩尔格N.克劳斯曼B.魏欣C.迪博尔德P.施拉姆R.鲁迪克
Owner ROBERT BOSCH GMBH
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