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Hydraulic machine, particularly pressure-controlled axial piston machine, has adjusting device for adjusting displacement volume of hydraulic device, which is coupled with rotary element

A hydraulic press and torque technology, applied in the field of hydraulic presses, can solve problems such as loss and achieve the effect of high-precision torque adjustment

Inactive Publication Date: 2014-07-02
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, large losses are incurred in this solution, especially from oil spills

Method used

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  • Hydraulic machine, particularly pressure-controlled axial piston machine, has adjusting device for adjusting displacement volume of hydraulic device, which is coupled with rotary element
  • Hydraulic machine, particularly pressure-controlled axial piston machine, has adjusting device for adjusting displacement volume of hydraulic device, which is coupled with rotary element
  • Hydraulic machine, particularly pressure-controlled axial piston machine, has adjusting device for adjusting displacement volume of hydraulic device, which is coupled with rotary element

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Experimental program
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Embodiment Construction

[0035] Unless stated otherwise, identical or functionally identical elements have the same reference symbols in the figures.

[0036] figure 1 A hydraulic machine 1 in the form of an axial piston machine according to a first embodiment is shown. The hydraulic machine 1 is connected with the fan 3 through the coupling 2 and can drive the fan 3 . The hydraulic machine 1 is controlled via a regulating device 7 shown very schematically. The hydraulic machine 1 can also drive another device different from the fan 3, such as a drilling machine, a mixer, a centrifuge, and the like.

[0037] figure 1 The medium hydraulic machine 1 has a shaft 10 , which can also be designated as a rotatable element 10 , and has a magnetized region 11 . Mounted on the shaft 10 is a shaft seal 15 in the form of a ring and a detection device 20 in the form of a sleeve for detecting the torque and rotational speed of the hydraulic machine 1 . The detection device 20 , with which the shaft seal 15 is ...

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PUM

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Abstract

The hydraulic machine (1) has an adjusting device for adjusting a displacement volume of a hydraulic device (35), which is coupled with a rotary element (10). A proportional directional valve is provided for controlling the adjusting device by a proportional magnet. A torque sensor (21) is provided for detecting a torque generated by the hydraulic device. A control device (7) is provided for controlling the torque generated by the hydraulic device(35) such that the proportional magnet(52) is electrically controlled by a result of detection of the torque sensor(21).

Description

technical field [0001] The invention relates to a hydraulic machine and a regulating method for regulating the torque produced by the hydraulic machine. Background technique [0002] WO 2011 / 107190 A1 describes a pressure-regulated axial piston machine, in which a special algorithm is implemented for setting a specific nominal torque of the hydraulic machine. [0003] Furthermore, for the Applicant, a specific target torque of the hydraulic machine is set by controlling the characteristic field. Here, the hydraulic machine is previously measured and its efficiency is determined based on parameters, pressure, rotational speed, temperature and swivel angle and stored in the controller. The pivot angle of the hydraulic press is adjusted to a specific value according to the setpoint requirements and based on the corresponding efficiency. This has been established so far with an electroproportional volume flow. [0004] Alternatively, the applicant is aware that the efficiency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/06F04B49/08F15B11/02
CPCF04B49/06F15B11/02F04B49/08F04B49/002F15B2211/20553F15B2211/633F15B2211/6652
Inventor J.霍温德R.施普林曼
Owner ROBERT BOSCH GMBH