Long-service-life shaft end

Abstract

The utility model discloses a long-service-life shaft end, and relates to the technical field of shaft connection. The shaft end comprises a shaft end body, a sleeve and a reinforcing ring, a step face is arranged on the shaft end body, the sleeve is sleeved on the shaft end body and is in contact with the step face, an outer key groove is arranged on the inner wall of the sleeve, an inner key groove matched with the outer key groove is arranged on the peripheral side face of the shaft end body, a key strip is arranged between the outer key groove and the inner key groove, and a plurality of screw openings are arranged at one end of the sleeve far away from the step face. An annular opening is formed in the circumferential side face of the shaft end body. According to the utility model, the original oil seal mounting position on the shaft end body is removed by turning, the inner key slot and the annular opening are turned, the design of the sleeve and the reinforcing ring is matched, and the sleeve replaces the original oil seal mounting position and is used for being in contact with the framework oil seal, so that after the abrasion problem occurs, the maintenance and overhaul can be carried out by replacing the sleeve, and the service life of the shaft end is prolonged. The situation that the whole shaft needs to be replaced is avoided, maintenance cost is reduced, and therefore the service life of the shaft and the shaft end is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of shaft connection technology, and in particular relates to a high-life shaft end. Background Technology

[0002] like Figure 5 As shown, the existing shaft end structure has an integrated oil seal mounting position 5 on the shaft end body. The skeleton oil seal is in contact with this position, which is prone to wear. Once worn, the entire shaft will be scrapped, resulting in excessive costs, affecting service life and making quick replacement and maintenance impossible, thus affecting the normal operation of the equipment. Summary of the Invention

[0003] The purpose of this invention is to provide a high-life shaft end. By removing the oil seal mounting position on the original shaft end body and machining out the inner keyway and annular opening, and with the design of the sleeve and reinforcing ring, the sleeve replaces the original oil seal mounting position for contact with the skeleton oil seal. When wear problems occur, maintenance and repair can be carried out by replacing the sleeve, avoiding the need to replace the entire shaft, reducing maintenance costs, and thus improving the service life of the shaft and shaft end.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model is a high-life shaft end, including a shaft end body, a sleeve and a reinforcing ring;

[0006] The shaft end body has a stepped surface, the sleeve is fitted onto the shaft end body and contacts the stepped surface, the inner wall of the sleeve has an external keyway, the peripheral side of the shaft end body has an internal keyway that mates with the external keyway, and a key bar is provided between the external keyway and the internal keyway.

[0007] The sleeve is provided with several threaded holes at the end away from the stepped surface, and the shaft end body is provided with an annular opening on its peripheral side.

[0008] The reinforcing ring is composed of several arc-shaped edges, with a raised edge on the inner side of each arc-shaped edge. The arc-shaped edges are arranged in a ring around the outside of the annular opening, with the gap between the raised edges inside the annular opening. The arc-shaped edges are provided with mounting holes, and the arc-shaped edges are fixed to the outer end face of the sleeve by fasteners, mounting holes, and screw threads.

[0009] Furthermore, the inner keyway is an oblong groove structure, and the key gap is disposed within the inner keyway.

[0010] Furthermore, the two ends of the external keyway are flush with the two end faces of the sleeve, and the sleeve covers the outside of the key bar.

[0011] Furthermore, the outer diameter of the reinforcing ring is smaller than the outer diameter of the sleeve.

[0012] Furthermore, the fastener is a screw, and a washer is provided between the screw and the arc-shaped edge.

[0013] This utility model has the following beneficial effects:

[0014] This invention removes the original oil seal mounting position on the shaft end body by machining out an inner keyway and an annular opening. Combined with the design of a sleeve and a reinforcing ring, the sleeve replaces the original oil seal mounting position for contact with the skeleton oil seal. In the event of wear problems, maintenance and repair can be carried out by replacing the sleeve, avoiding the need to replace the entire shaft, reducing maintenance costs, and thus improving the service life of the shaft and shaft end.

[0015] This invention, through the design of a reinforcing ring, can be used to reinforce the position of the sleeve, improve the stability of the sleeve position, and ensure the stability of shaft operation. At the same time, the design of the threaded end on the sleeve can not only be used for connecting the reinforcing ring, but also allow for the installation of tooling during sleeve replacement, facilitating the removal of the sleeve.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a high-life shaft end according to the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the shaft end body;

[0020] Figure 3 This is a schematic diagram of the sleeve structure;

[0021] Figure 4 This is a schematic diagram of the reinforcing ring structure;

[0022] Figure 5 This is a schematic diagram of the existing end shaft body;

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1-Shaft end body, 2-Sleeve, 3-Reinforcing ring, 4-Key bar, 5-Original oil seal mounting position, 101-Step surface, 102-Inner keyway, 103-Annular opening, 201-Outer keyway, 202-Threaded opening, 301-Arc edge, 302-Raised edge, 303-Mounting port. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4 As shown, this utility model is a high-life shaft end, including a shaft end body 1, a sleeve 2 and a reinforcing ring 3;

[0027] The shaft end body 1 is provided with a stepped surface 101, the sleeve 2 is sleeved on the shaft end body 1 and contacts the stepped surface 101, the inner wall of the sleeve 2 is provided with an outer keyway 201, the peripheral side of the shaft end body 1 is provided with an inner keyway 102 that mates with the outer keyway 201, and a key bar 4 is provided between the outer keyway 201 and the inner keyway 102.

[0028] The sleeve 2 has several threaded holes 202 at the end away from the stepped surface 101, and the shaft end body 1 has an annular opening 103 on its circumferential side.

[0029] The reinforcing ring 3 is composed of several arc-shaped edges 301. The inner side of the arc-shaped edges 301 is provided with a protruding edge 302. The several arc-shaped edges 301 are arranged in a ring around the outside of the annular opening 103. The protruding edge 302 is spaced inside the annular opening 103. The arc-shaped edges 301 are provided with mounting openings 303. The several arc-shaped edges 301 are fixed to the outer end face of the sleeve 2 by fasteners, mounting openings 303 and screw threads 202.

[0030] Among them, such as Figure 2 As shown, the inner keyway 102 has an oblong groove structure, and the gap of the key bar 4 is set inside the inner keyway 102.

[0031] Among them, such as Figure 3 As shown, the two ends of the external keyway 201 are flush with the two end faces of the sleeve 2, and the sleeve 2 covers the outside of the key bar 4.

[0032] Among them, such as Figure 1 As shown, the outer diameter of the reinforcing ring 3 is smaller than the outer diameter of the sleeve 2.

[0033] The fastener is a screw, and a washer is provided between the screw and the arc-shaped edge 301.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A long-life shaft end comprising a shaft end body (1), characterized in that: Also include the sleeve (2) and reinforcement ring (3); The shaft end body (1) is provided with a step surface (101), the sleeve (2) is sleeved on the shaft end body (1) and is in contact with the step surface (101), the inner wall of the sleeve (2) is provided with an outer key groove (201), the peripheral surface of the shaft end body (1) is provided with an inner key groove (102) matched with the outer key groove (201), and the outer key groove (201) and the inner key groove (102) are provided with a key bar (4) therebetween; The sleeve (2) is provided with a plurality of screw holes (202) at one end away from the step surface (101), and the peripheral surface of the shaft end body (1) is provided with an annular port (103); The reinforcement ring (3) is composed of a plurality of arc-shaped edges (301), the inner side of the arc-shaped edge (301) is provided with a convex edge (302), a plurality of the arc-shaped edges (301) are annularly sleeved outside the annular port (103), the convex edges (302) are arranged in the annular port (103) in a gap mode, the arc-shaped edge (301) is provided with a mounting port (303), and a plurality of the arc-shaped edges (301) are fixed to the outer end surface of the sleeve (2) through the fastener, the mounting port (303) and the screw hole (202).

2. A long life shaft end as claimed in claim 1 wherein, The inner key groove (102) is a waist-shaped groove structure, and the key bar (4) is arranged in the inner key groove (102) in a gap mode.

3. A long life shaft end as claimed in claim 2 wherein, The outer key groove (201) is flush with the end surfaces of the sleeve (2) at both ends, and the sleeve (2) covers the outside of the key bar (4).

4. A long life shaft end as claimed in claim 1 wherein, The outer diameter of the reinforcement ring (3) is smaller than the outer diameter of the sleeve (2).

5. A long life shaft end as claimed in claim 1, wherein, The fastener is a screw, and a gasket is arranged between the screw and the connecting position of the arc-shaped edge (301).

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