Mounting tool for shaft groove sealing element

Abstract

The utility model discloses a shaft groove sealing piece installation tool. The shaft groove sealing piece installation tool comprises a correction sleeve for limiting the exterior of a sealing piece. The sealing piece is sleeved in the shaft groove of the shaft groove piece, the correcting sleeve is sleeved outside the sealing piece, and the outside of the sealing piece is limited by the correcting sleeve, so that the sealing piece can only be tightly rebounded towards the inside of the shaft groove of the shaft groove piece when rebounded, the tightly-attaching property of the sealing piece rebounded into the groove is improved, and the problem that the tightly-attaching property of the sealing piece rebounded into the groove is poor is solved.

Description

Technical Field

[0001] This utility model relates to a shaft groove seal installation tool, belonging to the technical field of seal installation tools. Background Technology

[0002] When a grooved shaft component has grooves on its outer circumference to install a seal, seals made of materials with good elasticity can be manually stretched and deformed for installation, and will rebound due to their own elasticity after installation. However, for seals made of polytetrafluoroethylene (PTFE), due to their poor elasticity, manual stretching can easily lead to excessive local deformation of the seal, resulting in irrecoverable damage.

[0003] Existing technology for uniform deformation installation of seals, as described in Chinese Patent Publication No. CN218285367U, uses a pressure sleeve to press the seal against the outside of a conical guide body. Although this allows the seal to deform uniformly and fit into the sealing groove of the piston rod, the seal's rebound into the groove results in poor tightness. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a shaft groove seal installation tool.

[0005] This utility model is achieved through the following technical solution.

[0006] This utility model provides a shaft groove seal installation tool, comprising:

[0007] A correction sleeve for external restriction of the seal.

[0008] It also includes shaft groove components;

[0009] The stepped rod passes through the grooved shaft component, and a nut is screwed onto the top of the stepped rod to press the grooved shaft component tightly.

[0010] It also includes an expansion sleeve that is a cone-shaped structure with a smaller upper part and a larger lower part.

[0011] The expansion sleeve has a sleeve edge at the bottom, which fits around the outer periphery of the shaft groove; the bottom surface of the expansion sleeve has a receiving groove for accommodating the nut.

[0012] It also includes a top rod with a concave weight-reducing hole at the bottom, which is fitted onto the expansion sleeve; the lower part of the top rod is provided with spaced deformation grooves, which can provide deformation and expansion space for the top rod to expand.

[0013] The beneficial effects of this utility model are as follows: the sealing element is fitted inside the shaft groove of the shaft groove component, and the correction sleeve is fitted outside the sealing element. The outside of the sealing element is restricted by the correction sleeve, so that when the sealing element rebounds, it can only rebound tightly into the shaft groove of the shaft groove component, which improves the tightness of the sealing element rebounding into the groove and solves the problem of poor tightness of the sealing element rebounding into the groove. Attached Figure Description

[0014] Figure 1 This is a front sectional view of the sealing element during installation.

[0015] Figure 2 This is a front cross-sectional view of the sealing element of this utility model when it rebounds and fits tightly after installation;

[0016] In the figure: 1-shaft groove; 11-shaft groove; 2-step rod; 21-nut; 22-receiving groove; 3-expansion sleeve; 31-sleeve edge; 4-top rod; 41-weight reduction hole; 42-deformation groove; 5-seal; 6-correction sleeve. Detailed Implementation

[0017] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0018] like Figures 1 to 2 As shown.

[0019] This application discloses a shaft groove seal installation tool, comprising:

[0020] The stepped rod 2 is used for penetrating the shaft groove 1, and a nut 21 is screwed onto the top of the stepped rod 2 to press the shaft groove 1 tight.

[0021] It also includes an expansion sleeve 3 with a sleeve edge 31 at the bottom. The expansion sleeve 3 is a tapered body with a smaller top and a larger bottom. The sleeve edge 31 is fitted around the outer periphery of the shaft groove part 1. The bottom surface of the expansion sleeve 3 is provided with a receiving groove 22 for accommodating the nut 21.

[0022] It also includes a top rod 4 with a concave weight-reducing hole 41 at the bottom, which can be fitted onto the expansion sleeve 3; the lower part of the top rod 4 is provided with spaced deformation grooves 42, which can provide deformation and expansion space for the top rod 4.

[0023] The seal 5 is fitted onto the conical expansion sleeve 3. The bottom edge of the push rod 4 presses down against the seal 5, causing the seal 5 to expand elastically and uniformly. The seal 5 fits into the shaft groove 11 of the shaft groove component 1. The push rod 4 and expansion sleeve 3 are removed, and the correction sleeve 6 is fitted onto the outside of the seal 5. The outside of the seal 5 is restricted by the correction sleeve 6, so that when the seal 5 rebounds, it can only rebound tightly into the shaft groove 11 of the shaft groove component 1. This improves the tightness of the seal rebounding into the groove and solves the problem of poor tightness of the seal rebounding into the groove.

Claims

1. A tool for installing shaft groove seals, characterized in that, include: Correction sleeve (6) for external restriction of seal (5); It also includes shaft groove components (1); Step rod (2), step rod (2) passes through shaft groove (1), and a nut (21) is screwed on the top of step rod (2) to press the shaft groove (1) tight; It also includes an expansion sleeve (3) that is a cone-shaped structure with a smaller upper part and a larger lower part; The expansion sleeve (3) has a sleeve edge (31) at the bottom, which is fitted around the outer periphery of the shaft groove part (1); the bottom surface of the expansion sleeve (3) has a receiving groove (22) for accommodating the nut (21); It also includes a top rod (4) with a concave weight-reducing hole (41) at the bottom, the weight-reducing hole (41) being fitted onto the expansion sleeve (3); the lower part of the top rod (4) is provided with spaced deformation grooves (42).

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