A friction plate for a fluid-viscous clutch and a processing method thereof

A friction plate and clutch technology, applied in the field of fluid-viscous clutches, can solve the problems of reducing the difference between theoretical transmission torque and actual transmission torque, increasing torque, reducing oil film coverage, etc., and achieving an increase in effective area , the effect of increasing the transmitted torque

Inactive Publication Date: 2019-02-05
JIANGSU UNIV ZHENJIANG RES INST OF FLUID ENG EQUIP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems in the prior art that the oil film coverage at the outer diameter of the friction plate is reduced and the effective area of ​​torque transmission is reduced, the present invention provides a friction plate for a fluid-viscous speed regulating clutch and a processing method thereof. Under a certain premise, change the structural parameters of the oil groove along the radial direction, so that the oil passing capacity of the inner ring is greater than the oil passing capacity of the outer ring, which theoretically solves the problem that the coverage of the oil groove is lower than 100%, and increases the effective area of ​​the oil film between the friction plates , thus increasing the transmitted torque and reducing the difference between the theoretically transmitted torque and the actual transmitted torque

Method used

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  • A friction plate for a fluid-viscous clutch and a processing method thereof
  • A friction plate for a fluid-viscous clutch and a processing method thereof
  • A friction plate for a fluid-viscous clutch and a processing method thereof

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Effect test

Embodiment 1

[0031] figure 2 Shown is a schematic diagram of changing the angle of the oil groove area. In the figure, the surface of the friction plate includes the changed oil groove area 1 and the non-oil groove area 2. One of the friction plate processing methods changes the oil passing capacity by changing the angle of the oil groove area. The angle of the oil groove area The bigger it is, the stronger the oil passing ability of the oil groove is, otherwise the weaker the oil passing ability is. During processing, the angle of the oil groove area decreases with the increase of the radius, that is, the angle of the oil groove at the smallest inner diameter is the largest, and the angle of the oil groove at the largest outer diameter is the smallest, so that the oil passing ability at the inner diameter is stronger and the oil passing ability at the outer diameter is weaker. , so as to forcibly increase the oil groove coverage of the outer ring.

Embodiment 2

[0033] image 3 Shown is a radial cross-sectional view of changing the depth of the oil groove. In the figure, the depth of the oil inlet 3 and the oil outlet 4 are different. One of the friction plate processing methods changes the oil passing capacity by changing the depth of the oil groove. The greater the depth of the oil groove, the greater the The stronger the oil passing ability of the oil groove, the weaker the oil passing ability is vice versa. During processing, the depth of the oil groove decreases as the radius increases, that is, the depth of the oil groove at the smallest inner diameter is the largest, and the depth of the oil groove at the largest outer diameter is the smallest, so that the oil passing ability at the inner diameter is stronger and the oil passing ability at the outer diameter is weaker. Thus, the oil groove coverage of the outer ring is forcibly increased.

Embodiment 3

[0035] A method for processing the friction plate, changing the oil groove angle and oil groove depth at the same time to change the oil passing capacity, the larger the oil groove area angle, the stronger the oil passing capacity of the oil groove, and the larger the oil groove depth, the greater the oil passing capacity of the oil groove The stronger it is, on the contrary, the weaker the ability to pass oil. During processing, the angle of the oil groove area decreases with the increase of the radius, and the depth of the oil groove decreases with the increase of the radius, so that the oil passage capacity at the inner diameter is stronger and the oil passage capacity at the outer diameter is weaker, thereby compulsorily increasing Large outer ring oil groove coverage.

[0036] In the first embodiment, the second embodiment and the third embodiment, the oil passing capacity is changed by changing the parameters of the oil tank. In order to achieve 100% oil film coverage f...

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Abstract

The invention discloses a friction plate used for a liquid-viscosity variable-speed clutch and a processing method for the friction plate. An oil slot with certain shape is processed in the surface of the friction plate; oil passing capacity at different radiuses is changed by changing the structural dimension of the oil slot, so that oil passing capacity at relatively small radiuses is greater than that at relatively great radiuses, and therefore, an oil film coverage rate of the friction plate is increased; the angle of an oil slot region is reduced along with increase of the radiuses, i.e., the angle of the oil slot at the smallest inner diameter is biggest, and the angle of the oil slot at the biggest outer diameter is smallest; depth of the oil slot is gradually reduced along with increase of the radiuses, i.e., the depth of the oil slot at the smallest inner diameter is biggest, and the depth of the oil slot at the biggest outer diameter is smallest. The friction plate considers radial changes of radial speed of oil liquid in the friction plate, and difference of two different concepts Qinlet=Q and FORMULA as shown in the specification is distinguished in a flow filed analysis process of the friction plate; and oil passing capacity at different radiuses of the friction plate is changed through various ways, so that all oil film coverage of a gap of the friction plate is realized, and errors between a practical transmitting torque and a theoretical transmitting torque are reduced.

Description

technical field [0001] The invention relates to a friction plate, which is especially suitable for a liquid viscous speed regulating clutch. Background technique [0002] The structure of the friction plate directly affects the overall performance of the hydraulic clutch. In order to enhance the oil passing capacity, ensure that there is enough oil to take away the heat and remove wear debris, the surface of the friction plate is usually processed with a certain form of oil groove. In the traditional method of designing the oil groove of the friction plate of the hydraulic viscous clutch, there is no definite standard or calculation formula for the depth of the oil groove, and there is only a range of 0.5-0.6mm. So far, the patents related to the friction plate of the liquid viscous speed regulating clutch mainly include: CN102401018A discloses a design method for the friction pair of the liquid viscous speed regulating clutch; Novel friction disc set for fluid-viscous spee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D69/00F16D35/00
CPCF16D35/00F16D69/00F16D2069/004
Inventor 谢方伟吴殿成祝杰童耀文
Owner JIANGSU UNIV ZHENJIANG RES INST OF FLUID ENG EQUIP TECH
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