Hub unit

A hub unit and hub technology, applied in the direction of hubs, casters, wheels, etc., can solve the problems of oil leakage and unsatisfactory sealing effect, and achieve the effect of convenient oil change, good lubrication effect, and not easy to leak.

Pending Publication Date: 2018-09-11
山东浩信浩德精密机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With this kind of hub unit, the hub unit is only dynamically sealed by two simple sealing rings, the sealing effect is not ideal, and there is still the problem of oil leakage

Method used

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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] Such as figure 1 As shown, a hub unit includes: a hub body 1 and a bushing 2 passing through the hub body 1 , and a first rolling bearing 3 and a second rolling bearing 4 are installed between the bushing 2 and the hub body 1 . The hub unit is divided into an inner side and an outer side according to the loaded state of the hub unit. The inner side is the side where the hub unit faces the chassis of the vehicle, the first rolling bearing 3 is located on the inner side, and the second rolling bearing 4 is located on the outer side. A main oil seal 5 and an intermediate oil seal 6 are arranged between the corresponding sealing surfaces of the hub body 1 and the shaft sleeve 2 , the main oil seal 5 is located inside, and the intermediate oil seal 6 is located between the first rolling bearing 3 and the second rolling bearing 4 . The sealing area ...

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Abstract

The invention discloses a hub unit, which comprises a hub body, wherein a shaft sleeve is arranged in the hub body; a first rolling bearing and a second rolling bearing are arranged between the shaftsleeve and the hub body; the first rolling bearing is arranged at the inner side and the second rolling bearing is arranged at the outer side. A main oil sealing and an intermediate oil sealing are arranged between the hub body and the corresponding sealing surface of the shaft sleeve, the main oil sealing is arranged at the inner side, and the intermediate oil sealing is arranged between the first rolling bearing and the second rolling bearing. The sealing area between the main oil sealing and the intermediate oil sealing is a grease storage cavity, the first rolling bearing is arranged in the grease storage cavity, the sealing area outside the intermediate oil sealing is an oil storage cavity, and the second rolling bearing is arranged in the oil storage cavity. According to the invention, the inner cavity of the hub unit is divided into an oil storage cavity and a grease storage cavity, the oil storage cavity and the grease storage cavity are independent with each other, so that thehub unit has the advantages of good lubrication performance and convenient replacement, which are from the oil lubrication, and the hub unit also has the advantage ofnot easy to leak, which is from grease lubrication,meanwhile, the double oil sealing improves the reliability of the dynamic sealing of the hub unit.

Description

technical field [0001] The invention relates to a wheel hub unit, in particular to a wheel hub unit used in commercial vehicles such as trucks and passenger cars. Background technique [0002] In the prior art, there are two lubrication methods for the hub unit: oil lubrication and grease lubrication, but no matter which lubrication method is used, in order to achieve the lubrication effect, it is necessary to use a dynamic sealing structure to ensure the sealing of the inner cavity so that the lubricating medium does not leak. However, under the action of high speed, heavy load or impact load, the friction of the bearing and the heat transferred from the braking device will increase the temperature and pressure in the hub unit. When the temperature in the hub unit rises, the air pressure in the inner cavity of the hub unit will increase. , so that the oil seal lip of the dynamic seal is under greater pressure, and there is a large abnormal deformation, which reduces the dyn...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): B60B27/00F16C35/067F16N1/00
CPCF16C35/067F16N1/00B60B27/001B60B27/0073F16C2326/02F16N2210/04F16N2210/14
Inventor高世阳马常伟岳中政朱世英张春龙
Owner山东浩信浩德精密机械有限公司