Bearing protection sheet

Abstract

A bearing protective sheet, comprising a sheet body, the outer ring of the sheet is welded and fixed on the outer ring of one end face of the bearing, the inner ring of the sheet has a flange, and the flange is also connected with a protection ring, and the protection ring is connected with the The inner ring fits on one end face of the bearing. Its structure is simple, easy to process and manufacture, and there are evenly distributed small bumps on the welding surface of the sheet for spot welding. , the sheet protection ring and the inner ring of the bearing always maintain low friction contact, forming a sealing layer, which can effectively prevent the leakage of grease inside the bearing, and also prevent external grease, dust and other media from entering the inner cavity of the bearing, with good sealing performance. The service life of the bearing is greatly improved, and it can work in harsh environments. It solves the long-term problem of bearing oil leakage in the gearbox. It is suitable for use on bearings of various sizes, shapes, structures, and materials. It is universal Strong performance and wide application range.

Description

technical field [0001] The invention relates to a sealing protection sheet for a bearing, in particular to a bearing protection sheet which is fixed on the end surface of the bearing, effectively prevents the oil from leaking inside the bearing, and prevents external oil, dust and other media from entering the inner cavity of the bearing. . Background technique [0002] The use and service life of the bearing are directly affected by the sealing effect and the effective life of the lubricating grease, and the lubricating grease installed inside the bearing keeps the bearing running in a low friction state as much as possible. Generally, if the bearing with grease is installed in the transmission gearbox, due to the poor working conditions of the gearbox and the harsh working environment, a large amount of heat will be generated due to gear transmission and friction during the operation of the gearbox, which will increase the working temperature in the gearbox. High, due to ...

AI Technical Summary

Problems solved by technology

Generally, if the bearing with grease is installed in the transmission gearbox, due to the poor working conditions of the gearbox and the harsh working environment, a large amount of heat will be generated due to gear transmission and friction during the operation of the gearbox, which will increase the working temperature in the gearbox. High, due to the rise of temperature, a certain internal pulsating pressure will be generated. Under the action of a certain pressure, the grease in the bearing is easily squeezed out and leaked out. The friction force of the bearing running due to the reduction of grease It will increase, which will damage the bearing and affect the service life of the bearing. In addition, the grease leaks out and flows into the gearbox to mix with the oil in the gearbox. Because grease and engine oil are lubricating oils with different components and different functions, engine oil Grease is mixed into the gear and affects the meshing transmission of the gear, which causes a series of problems such as work efficiency, life, safety, etc., and this problem has always plagued the bearing manufacturers used with the gearbox

[0003] Patent No. CN02266982.5 "Three-lip Waterproof Sealed Bearing" and Patent No. CN200520073814.4 "Bearing Composite Sealing Ring" both provide a waterproof seal with good performance, which can prevent grease leakage inside the bearing, and is waterproof, dustproof and waterproof. The characteristics of grease leakage, but they have one thing in common. They can only be used as an important sealing part of the bearing. They are all press-fitted on the inner ring of the bearing and the teeth of the outer ring of the bearing. After the bearing has been working for a long time, the sealing rubber is aging. , so that the sealing ring is easy to loose, poor in stability and reliability, so the bearing of this structure is not suitable for working in the harsh environment of the gear box

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