Tool equipment and method for hydraulic motor front end cover two-way lip seal assembly

Abstract

The invention discloses tool equipment and a method for a hydraulic motor front end cover two-way lip seal assembly. The tool equipment comprises an opening plastic ring, a guide sleeve ring, a firstflange, a mounting bolt, a long screw, nuts, a second flange, a middle ring, a fixing bolt, a dismounting flange and an ejection bolt, wherein the opening plastic ring, the guide sleeve ring, the first flange, the mounting bolt, the long screw, the nuts, the second flange and the middle ring are used for mounting, and the fixing bolt, the dismounting flange and the ejection bolt are used for dismounting; and the guide sleeve ring is a cylindrical part, the outer peripheral surface of the guide sleeve ring is a conical surface which is reduced from top to bottom, the inner peripheral surface ofthe guide sleeve ring is a cylindrical surface, an arc-shaped groove allowing a stepped portion of a hydraulic motor front end cover to be embedded is formed in the lower portion of the inner peripheral surface, so that a thin-wall cutting edge is formed at the lower end of the guide sleeve ring. According to the equipment and the method, the structure is simple, the operation is convenient, theproblems existing in the prior art can be effectively solved, when the seal assembly is disassembled and reinstalled, no damage can be caused to the seal assembly, the operation is convenient, time and labor are saved, and working efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of seal replacement operations, in particular to a tooling device for a bidirectional lip seal assembly of a front cover of a hydraulic motor and a method thereof. Background technique [0002] The two-way lip seal assembly is a sealing device that can seal in two directions, and can isolate the sealing chambers on both sides of the lip to prevent communication. Usually, this kind of sealing assembly is made of a polyoxymethylene skeleton as a support frame. A groove is set in the center of the outer circle of the support frame, and an O-ring is placed to form a static seal on the outer peripheral surface. At the same time, a groove is set on the inner surface of the support frame. Place a two-way lip seal made of polyurethane to isolate the cavities on both sides of the seal, such as figure 1 As shown, the two-way lip seal assembly 101 is used to prevent the external medium from entering the hydraulic moto...

AI Technical Summary

Problems solved by technology

In this method, the O-ring on the outer surface of the supporting frame is compressed, and the two-way lip seal on the inner surface is also compressed. When the sealing assembly is pulled out and the third step is performed, the friction force on the inner and outer surfaces of the sealing assembly is very large. It is very easy to apply tension unevenly, and the removal process is often destructive and time consuming

Similarly, when reinstalling, the first step is to take out the retainer for axial positioning of the seal and place the plastic ring in the retainer groove; the second step is to set the seal assembly on the shaft to be sealed; because the seal The lip on the inner surface of the component shrinks inward, and its inner diameter is slightly smaller than the outer diameter of the shaft. Extreme care must be taken during the process of fitting the shaft to be sealed, which can easily cause O on the outer surface of the sealing component. The ring was crushed, and the lip on the inner surface was crushed and failed, which affected the normal use of the equipment

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