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Hydrodynamic brake

A technology of reducer and gearbox, which is applied in the field of vehicle reducer, can solve the problems that there is no pump impeller and cannot realize the hydraulic braking of the driven machine, etc., and achieve the effect of functional stability and long service life

Inactive Publication Date: 2010-05-05
VOITH PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, hydraulic braking of the driven machine cannot be achieved with this hydraulic coupling because, firstly, no means are provided for fixing the pump impeller, and secondly, in a state where braking is desired , that is, when the driven shaft rotates faster than the drive shaft, the pump impeller is in a position away from the turbine

Method used

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Examples

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Embodiment Construction

[0027] figure 1 The gear unit shown in is constructed as follows: a rotor 1 and a stator 2 are each designed as a bucket wheel and a torus-shaped working chamber 3 is formed between them. The rotor is supported on a hollow shaft 4 . The hollow shaft is connected in a rotationally fixed manner to a shaft 5 adjacent to a cardan shaft (not shown) and to a shaft 6 adjacent to a transmission gearbox (not shown). The shaft 5 is extendable in the hollow shaft 4 and is equipped with a flange 5.1 for torque transmission.

[0028] The stator 2 has a stator housing 2.1. The rotor 1 has a rotor housing 1.1.

[0029] The rotor 1 is indirectly supported by the hollow shaft 4 . Because the hollow shaft 4 itself carries a threaded ring 4.1. The threaded ring has a steep thread 4.1.1 on its outer circumference. The rotor 1 is provided with a corresponding steep thread 1.1.1 on its inner circumference. The two steep threads 4.1.1 and 1.1.1 work together. They have a pitch that satisfies...

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Abstract

The invention relates to a retarder having the following features: a rotor ( 1 ) and a stator ( 2 ) that, together, form a working space ( 3 ); a hollow shaft ( 4 ) for connecting, in a rotationally fixed manner, an input shaft ( 5 ), which is near a transmission, to an output shaft ( 6 ), which is near a cardan shaft, and; the hollow shaft support s the rotor by means of a screw thread ( 4.1.1 ).

Description

technical field [0001] The present invention relates to a hydraulic brake, also known as a "vehicle retarder", especially for automobiles. Background technique [0002] Such a reducer has two bucket wheels, one of which is stationary (stator) and the other is rotating (rotor). The two bucket wheels mutually form a torus-shaped working chamber. The working chamber is filled with a working medium, for example an oil, for braking purposes. However, in the non-braking operating phase, there is no working medium in the working chamber. [0003] During the non-braking operating phase, however, air is present in the working chamber. This produces undesired braking torques and thus power losses, which increases energy losses. [0004] Numerous measures for reducing the power loss are known. The purpose of such a measure is to make the rotor and the stator movable relative to each other in the axial direction. In the non-braking operating phase, the rotor and stator are separat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D57/04B60T1/087
CPCF16D57/04
Inventor 克劳斯·沃格尔桑沃尔特·埃伯莱恩马丁·迪格
Owner VOITH PATENT GMBH
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