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Water-lubricated sliding bearing

A technology of sliding bearings and water lubrication, which is applied in transmission devices, transmission device parts, gear transmission devices, etc., can solve the problems of boundary lubrication limiting the increase of journal speed, and achieve benefits for lubrication and cooling, performance improvement, and efficiency improvement Effect

Inactive Publication Date: 2014-08-20
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of boundary lubrication caused by water-lubricated sliding bearings due to the carrying capacity of water and the problem of limiting the increase in journal speed, the present invention now provides a water-lubricated sliding bearing structure

Method used

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Embodiment Construction

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

[0017] figure 1 The interrupted part on the lower right side of the center is the bearing housing 4 connected with the screw compressor and the screw expander, the main shaft 2 extends from the right end of the bearing housing 4, and the bearing housing 4 provides support for the main shaft 2 through the sliding bearing 3. The main shaft 2 rotates and drives the sliding bearing 3 to rotate through the planetary gear reduction mechanism. The planetary reduction mechanism includes a sun gear 5 , a planetary gear 9 , a planet carrier 7 and an inner ring gear 11 . The main shaft 2 is connected with the sun gear 5 through the key 1; the sliding bearing 3 is connected with the planet carrier 7 through the first screw 8; each planetary gear 9 is installed on the planetary gear shaft; the inner ring gear 11 is fixed on the bearing seat 4 through the screw 1...

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Abstract

The invention discloses a water-lubricated sliding bearing which comprises a water-lubricated sliding bearing part and a planetary wheel speed reducing mechanism part. The water-lubricated sliding bearing part is composed of a main shaft, a sliding bearing body and a bearing base; the planetary wheel speed reducing mechanism part is composed of a sun gear, a planetary gear, a planetary frame and an inner gear ring; the sun gear is connected with the main shaft through a key; the planetary frame is connected with the sliding bearing body through a screw; the inner gear ring is fixed to the bearing base through a screw. When the main shaft rotates, the sun gear drives the planetary gear, and the planetary gear drives the planetary frame to drive the sliding bearing body to rotate around the center axis of the main shaft. Accordingly, the sliding bearing body rotates at a certain rotation speed relative to a rotor, the relative sliding speed of the surface of the main shaft and the sliding bearing body can be reduced, and the material manufacturing and design difficulty of the water-lubricated sliding bearing is lowered. By means of the water-lubricated sliding bearing, the rotation speed of the main shaft can be greatly increased, and the performance of screw compressors, screw expanders and other machines is improved.

Description

【Technical field】 [0001] The invention relates to a water-lubricated sliding bearing, which utilizes the principle of relative motion, and uses a gear connected to a main shaft as an input sun gear through a planetary gear reduction mechanism. The planetary frame drives the bearing to rotate, and the inner ring gear and the bearing seat are fixed. 【Background technique】 [0002] At present, the speed of water-lubricated sliding bearings in the domestic and foreign markets is relatively low. For example, the maximum speed of a water-lubricated sliding bearing from Atlas Copco is only 2200r / min. The main difficulty is that under the condition of water as lubricant, the self-lubricating performance of the sliding bearing material is required to be very high, because the viscosity of water is too low compared to mineral oil, that is, at 50°C, the absolute viscosity of water is about 165 for oil. Water is a Newtonian fluid in a low-speed rotating sliding bearing, that is, the vi...

Claims

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Application Information

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IPC IPC(8): F16H57/08F16H55/17F16H55/06F16H1/32
CPCF16H57/0479F16H2057/085
Inventor 李星星张凯陈文卿邢子文
Owner XI AN JIAOTONG UNIV
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