Sealing performance detection method and device for pivotal bearing

Abstract

The invention discloses a sealing performance detection method for a pivotal bearing. The method comprises the steps of (1) determining the largest pressure value P capable of being borne by the pivotal bearing before a sealing failure, determining the pressure value P1 meeting the operation requirement of the pivotal bearing according to the largest pressure value P and the actual operation requirement of the pivotal bearing, and enabling P1 to be smaller than P; (2) opening one oil inlet of the pivotal bearing to be detected, and sealing remaining oil inlets and all oil outlets of the pivotal bearing to be detected; (3) piping gas in the opened oil inlet in the pivotal bearing to be detected, and ending gas piping after the gas pressure in the pivotal bearing to be detected reaches P1; (4) testing whether deformation of a sealing ring in the pivotal bearing to be detected is restored or not, if yes, determining that the sealing performance is qualified, and if not, determining that the sealing performance is unqualified. According to the method, whether the sealing performance of the pivotal bearing is qualified or not can be tested, and a user is prevented from using the pivotal bearing with the unqualified sealing performance. The invention further discloses the sealing performance detection device with the pivotal bearing.

Description

technical field [0001] The invention relates to the technical field of machinery industry, more specifically, to a method for detecting the sealing performance of a rotary bearing, and also to a device for detecting the sealing performance of the rotary bearing. Background technique [0002] With the development of society, slewing bearings are increasingly used in various mechanical equipment. The slewing bearing includes an outer ring, an inner ring, and a sealing ring sealed between the inner ring and the outer ring. Among them, the outer ring (or inner ring) is provided with a plurality of oil inlet and outlet ports; The port enters the gap between the inner ring and the outer ring, and flows out from the oil outlet to lubricate the rollers between the inner ring and the outer ring. [0003] At present, the production process of slewing bearings has strict requirements for each link, such as the length of sealing ring blanking, the method of pressing the sealing ring be...

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Problems solved by technology

[0003] At present, the production process of slewing bearings has strict requirements for each link, such as the length of sealing ring blanking, the method of pressing the sealing ring between the inner ring and the outer ring, etc. However, after the assembly of the various parts of the slewing bearing Whether the sealing effect of the ring is good or not depends only on the experience of workers, and it cannot ensure that users can use slewing bearings with good sealing performance.

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