Shaft seal installation tool and installation method

A technology for installing tools and installation methods, which is applied in the directions of manufacturing tools, engine sealing, hand-held tools, etc., can solve the problems of long time-consuming, leaking, and affecting the sealing effect of the sealing ring to restore the size by itself.

Inactive Publication Date: 2016-07-13

张辉

11 Cites 1 Cited by

AI-Extracted Technical Summary

Problems solved by technology

Compared with manual installation, installation in this way can improve the installation effect, but when multiple sealing rings are to be installed on the rod body, multiple tooling needs to be processed, which brings a burden to production; Expansion and deformat...

Abstract

The invention discloses a shaft seal installation tool and a shaft seal installation method. The shaft seal installation tool is characterized in that an installation ring comprises a radial supporting surface, an axial supporting surface and an inner hole conical surface; the outer diameter of the axial supporting surface is greater than the minimum inner diameter of the inner hole conical surface, and the width of the axial supporting surface is greater than the cross section diameter of a seal ring; and the minimum inner diameter of the inner hole conical surface is matched with a predetermined seal size of the seal ring and slightly greater than the outer diameter of a shaft required to be installed with the seal ring. The installation ring further can form a combined installation tool together with a guide ring. During installation, the seal ring is used for sleeving the axial supporting surface of the installation ring directly or through the guide ring, the installation ring is moved to the left side of a seal groove in the shaft, the seal ring is pushed in the seal groove, the installation ring is taken out reversely, and the inner hole conical surface is extruded for enabling the expanded and deformed seal ring to be recovered in size; and by repeating the steps, a plurality of seal rings can be installed. By applying the shaft seal installation tool and installation method, the seal rings can be conveniently installed and the cutting damage of the seal rings during subsequent parts assembly can be prevented.

Application Domain

Engine sealsMetal-working hand tools

Technology Topic

Conical surfaceSupport surface

Image

Examples

Experimental program(1)

Example Embodiment

[0017] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0018] figure 1 The mounting ring 1 shown includes a radial support surface 1.1, an axial support surface 1.2, and an inner hole cone surface 1.3. The outer diameter d2 of the axial support surface 1.2 is greater than the minimum inner diameter d1 of the inner hole cone surface 1.3 and its width is greater than the seal The cross-sectional diameter of the ring 3; the minimum inner diameter d1 of the inner hole conical surface 1.3 is adapted to the predetermined sealing size of the sealing ring 3 and slightly larger than the outer diameter d3 of the shaft 4 where the sealing ring 3 needs to be installed. The end of the axial supporting surface 1.2 is rounded, so that the surface of the sealing ring will not be damaged when the sealing ring 3 is inserted.

[0019] As a preferred solution, especially for some sealing rings with poor elasticity, the mounting ring 1 and the guide ring 2 can be used to form a combined installation tool, and the guide ring 2 is matched with the mounting ring 1 through the stop 2.1. When installing the sealing ring, first insert the sealing ring 3 into the conical surface 2.2, and then push the sealing ring 3 into the axial support surface 1.2 of the mounting ring manually or by using a pushing tool.

[0020] After the above steps are completed, move the mounting ring 1 to the left side of the sealing groove 4.1 on the shaft 4, push the sealing ring 3 into the sealing groove 4.1, and remove the mounting ring 1 in the opposite direction; then follow the above steps to remove the sealing ring 3. Install the sealing groove 4.2, and so on, insert the sealing ring 3 into the sealing groove one by one. Of course, for some sealing rings with a smaller cross-sectional diameter, multiple sealing rings can also be directly sleeved into the axial support surface 1.2 of the mounting ring in advance, so that the installation of multiple sealing rings can be realized at one time. During the withdrawal process of the mounting ring 1, appropriately slowing down the withdrawal speed can make the inner hole cone of the mounting ring 1 more fully squeeze the deformed sealing ring 3, which is beneficial to the recovery of the size of the sealing ring 3. Since the minimum inner diameter d1 of the cone surface 1.3 of the inner hole is adapted to the predetermined sealing size of the sealing ring 3, after the installation ring is completely withdrawn, the sealing ring can basically achieve the predetermined sealing size to ensure the sealing effect.

PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.