Axle oil seal for paddy field operation

By designing an axle oil seal structure composed of an outer oil seal, support ring and inner oil seal, the limit part and seal structure are used to improve the sealing effect, and the problem of wear and seal failure of existing axle oil seals in paddy field operation environment is solved, achieving a longer service life and a lower claim rate.

CN222687304UActive Publication Date: 2025-03-28QINGDAO REGENCY OIL SEAL CO LTD
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Patent Information

Application Number
CN202420799338.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-17
Publication Date
2025-03-28
Estimated Expiration
2034-04-17

AI Technical Summary

Technical Problem

The existing axle oil seals are prone to wear and tear due to the erosion of mud and water and weeds in paddy field operation environment, resulting in the failure of the sealing effect and the claim rate is high.

Method used

An axle oil seal structure consisting of an outer oil seal, a support ring and an inner oil seal is designed to limit the outer and inner oil seals through the support ring, and the movement of the inner and outer oil seals is restricted by using the right-moving and left-moving limiting part to reduce the friction between the inner and outer seals. Meanwhile, a first sealing structure and a maze structure are provided to protect the sealing lip.

Benefits of technology

It effectively improves the service life of the oil seal, reduces the claim rate, and improves the sealing effect through double-layer sealing and maze structure to prevent the erosion of mud, water and sand and dust.

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Abstract

The utility model belongs to the technical field of paddy field axle and gearbox sealing, and particularly relates to an axle oil seal for paddy field operation, which consists of an outer oil seal, a support ring and an inner oil seal which are sequentially and mutually sleeved together from outside to inside, and the inner oil seal and the outer oil seal are assembled together by the support ring. Inner and outer oil seals can be prevented from being separated. The outer oil seal is in sealing connection with a vehicle body through the sealing layer on the outer sealing ring, and the inner oil seal is in sealing connection with a shaft through the sealing layer on the inner sealing ring. The first sealing structure on the left side of the third bent limiting plate and the second sealing structure at the lower end of the first bent limiting plate achieve double-layer sealing of the axle. A right moving limiting part is arranged on the left side of a first bent limiting plate of the outer oil seal and used for limiting the inner oil seal to move rightwards, a second bent limiting plate of the supporting ring is in interference fit with a first sealing structure of the inner oil seal, meanwhile, the inner oil seal is limited from moving towards the base, and the displacement resistance of the oil seal is effectively improved.
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