Shaft sleeve assembling and disassembling structure

Abstract

The utility model provides a shaft sleeve mounting and dismounting structure, which is characterized in that one end of a shaft sleeve is inserted into a hole of a shell, and an O-shaped ring in sealing fit with the inner wall of the hole is sleeved on an inserting part of the shaft sleeve, which is positioned in the shell; a convex ring is arranged on the shaft sleeve on one side outside the inserting part, the end face of one side of the convex ring abuts against the end face of the outer side of the shell, a circle of first through holes are distributed in the convex ring in the circumferential direction, a circle of first threaded holes corresponding to the first through holes in position are formed in the end face of the outer side of the shell, and stud bolts connected with the first threaded holes are arranged in the first through holes; and at least one pair of second threaded holes are oppositely formed in the convex ring, and flat-end set screws are detachably connected into the second threaded holes. The O-shaped ring on the shaft sleeve is pressed into the corresponding hole by screwing down the stud bolt, and safety, stability, convenience and rapidness are achieved. The shaft sleeve can be ejected out by tightening the flat-end set screw, and when the O-shaped ring is separated from the matched hole, the shaft sleeve can be easily disassembled, so that the shaft sleeve is safer and more convenient.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a shaft sleeve disassembly structure. Background Art

[0002] In the field of valve manufacturing, the shaft sleeve is a key connecting component that carries the important task of tightly connecting other components. The valves produced by our company use the shaft sleeve as a core component to ensure the normal operation and stability of the valve. However, in actual operation, the O-ring on the shaft sleeve often brings many inconveniences to installation and removal, thus affecting the work efficiency and the overall performance of the valve.

[0003] As a key part connecting other parts of the valve, the sleeve needs to have good sealing performance to ensure that the valve can work normally under harsh environments such as high pressure and high temperature. To this end, we put an O-ring on the sleeve and use its elastic deformation characteristics to achieve a good sealing effect. However, it is this O-ring that brings considerable challenges to the installation and removal process.

[0004] When installing the sleeve, although we have designed a guide angle on the edge of the corresponding hole to prevent the O-ring from being cut or damaged during installation, due to the elasticity and friction of the O-ring, it often gets stuck in the hole, making installation difficult. In order to insert the sleeve into the hole smoothly, a certain amount of force needs to be applied during installation to overcome the resistance of the O-ring. This not only increases the difficulty of installation, but may also damage the O-ring, thereby affecting its sealing performance.

[0005] The same problem exists when removing the sleeve. Because the O-ring fits tightly between the sleeve and the hole, a large friction force is formed. In order to successfully remove the sleeve, it is necessary to overcome this friction force, which often requires more time and effort. In addition, the O-ring may be damaged or fall off due to improper operation during the removal process, further increasing the difficulty and cost of maintenance. Utility Model Content

[0006] The utility model provides a shaft sleeve disassembly structure, wherein one end of the shaft sleeve is inserted into a hole of a housing, and an O-ring sealingly matched with the inner wall of the hole is sleeved on the insertion part of the shaft sleeve located in the housing, and is characterized in that a circular arc chamfer is provided at the connection between the hole and the outer end surface of the housing;

[0007] A convex ring is provided on the shaft sleeve at one side of the plug-in portion, and one end surface of the convex ring abuts against the outer end surface of the housing.

[0008] The convex ring has a circle of first through holes distributed along the circumferential direction, and the outer end surface of the shell is provided with a circle of first threaded holes corresponding to the positions of the first through holes, and a plurality of stud bolts pass through the first through holes and are threadedly connected to the first threaded holes to fix the sleeve and the shell; and

[0009] The convex ring is provided with at least one pair of second threaded holes opposite to each other, and a flat-end set screw is detachably connected in the second threaded hole, and the flat-end set screw is provided with a hexagonal wrench hole, and the flat-end set screw is tightened to separate the shaft sleeve and the housing;

[0010] The distance L1 between the O-ring and the outer end surface of the housing is less than the length L2 of the flat-end set screw and less than the thickness of the convex ring.

[0011] Furthermore, the plug-in portion is provided with an annular groove for accommodating the O-ring.

[0012] Furthermore, the outer edge of the convex ring does not protrude beyond the edge of the outer end surface of the shell.

[0013] Furthermore, the shaft sleeve is integrally formed with the convex ring.

[0014] Furthermore, the convex ring is provided with eight first through holes along the circumferential direction, and the convex ring is provided with a pair of second threaded holes arranged on both sides.

[0015] Furthermore, the stud bolt is a GB / T 70.1 screw, and the flat-end set screw is a GB / T77 screw.

[0016] The shaft sleeve disassembly structure of the utility model has the following technical advantages:

[0017] 1. The convex ring can effectively enhance the bearing capacity of the sleeve, enabling it to withstand greater pressure and load, and enable it to maintain stable performance in a high-load working environment. Secondly, the convex ring can also play a role in sealing and dust prevention. During the operation of the sleeve, the convex ring can fit tightly on the relevant components to prevent dust and debris from entering the interior of the sleeve, thereby keeping the sleeve clean and in good working condition. This sealing performance is of great significance to ensure the normal operation of the sleeve and extend its service life.

[0018] 2. The convex ring has a circle of first through holes distributed along the circumference, through which the sleeve and the housing can be fixedly connected by bolts. In addition, the convex ring is provided with at least one pair of second threaded holes opposite to each other, and the second threaded holes are detachably connected with flat-end set screws. Tightening the flat-end set screws can push the sleeve outward, so that the O-ring is separated from the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a partial structural diagram of a shaft sleeve disassembly structure of the utility model. DETAILED DESCRIPTION

[0021] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0022] In order to thoroughly understand the present invention, detailed steps and detailed structures will be presented in the following description to illustrate the technical solution of the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0023] Reference Figure 1 As shown, the utility model provides a sleeve disassembly structure, one end of the sleeve 2 is inserted into a hole 11 of a housing 1, and an inserting portion 21 of the sleeve 2 located in the housing 1 is sleeved with an O-ring 3 that seals with the inner wall of the hole 11, and an annular groove is provided around the inserting portion 21 for accommodating the O-ring 3. A circular chamfer 12 is provided at the connection between the hole 11 and the outer end surface of the housing 1.

[0024] A convex ring 22 is provided on the shaft sleeve 2 on the outer side of the plug-in portion 21, and one end face of the convex ring 22 abuts against the outer end face of the housing 1. In a preferred embodiment, the shaft sleeve 2 adopts an integral molding technology, so that the convex ring 22 is closely connected with the shaft sleeve itself to form an inseparable whole. This integral molding design not only enhances the structural stability of the shaft sleeve 2, but also greatly improves its durability and reliability.

[0025] As an important component of the shaft sleeve 2, the convex ring 22 has multiple functions and advantages. First, the convex ring 22 can effectively enhance the bearing capacity of the shaft sleeve 2, so that it can withstand greater pressure and load, and maintain stable performance in a high-load working environment. Secondly, the convex ring 22 can also play a role in sealing and dust prevention. During the operation of the shaft sleeve 2, the convex ring 22 can fit tightly on the relevant components to prevent dust, debris, etc. from entering the interior of the shaft sleeve, thereby keeping the shaft sleeve 2 clean and in good working condition. This sealing performance is of great significance for ensuring the normal operation of the shaft sleeve 2 and extending its service life.

[0026] Among them, the convex ring 22 has a circle of first through holes 23 distributed along the circumferential direction, and a circle of first threaded holes 13 corresponding to the positions of the first through holes 23 are provided on the outer end surface of the shell 1. A plurality of stud bolts 24 pass through the first through holes 23 and are threadedly connected with the first threaded holes 13 to fix the sleeve 2 and the shell 1. By tightening the stud bolts 24, the O-ring 3 on the sleeve 2 is pressed into the corresponding hole 11, which is safe, stable, convenient and fast.

[0027] In addition, the convex ring 22 is provided with at least one pair of second threaded holes 25 opposite to each other, and a flat-end set screw 26 is detachably connected to the second threaded hole 25. The flat-end set screw 26 is provided with a hexagonal wrench hole. By tightening the flat-end set screw 26, the front end of the flat-end set screw 26 squeezes the shell 1, which can push the sleeve 2 outward and disengage the O-ring 3 from the hole 11. The friction of the O-ring will disappear, and then the sleeve can be easily removed, which is safer and more convenient.

[0028] In a preferred embodiment, the distance L1 between the O-ring 3 and the outer end surface of the housing 1 is less than the length L2 of the flat-end set screw 26 and less than the thickness of the convex ring 22. Such a design enables the flat-end set screw 26 to play the greatest role in fixing the O-ring 3. By setting the distance L1 between the O-ring 3 and the outer end surface of the housing 1 to be less than the length L2 of the flat-end set screw 26, after tightening the flat-end set screw 26, the outward displacement length of the sleeve is also L2, thereby completely disengaging the O-ring 3 from the hole 11.

[0029] At the same time, the length L2 of the flat-end set screw 26 is not greater than the thickness of the convex ring 22, so that the outer end surface of the flat-end set screw 26 does not protrude from the outer end surface of the convex ring 22 under normal conditions, thereby avoiding possible damage or adverse effects and ensuring the stability and reliability of the entire structure. In addition, when the sleeve 2 is removed, the flat-end set screw 26 is hidden in the convex ring 22, which is more beautiful and also prevents the flat-end set screw 26 from protruding outward and hooking foreign objects or being hit.

[0030] In a preferred embodiment, the outer edge of the protruding ring 22 does not protrude beyond the edge of the outer end surface of the housing 1 .

[0031] In a preferred embodiment, the convex ring 22 is provided with eight first through holes 23 along the circumferential direction, and the convex ring 22 is provided with a pair of second threaded holes 25 arranged on both sides. Further optionally, the stud bolt 24 is a GB / T 70.1 screw, and the flat-end set screw 26 is a GB / T 77 screw.

[0032] The above describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the above-mentioned specific implementation methods, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the utility model without departing from the scope of the technical solution of the utility model, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A shaft sleeve detachable structure, wherein one end of a shaft sleeve (2) is inserted into a hole (11) of a housing (1), and an inserting portion (21) of the shaft sleeve (2) located in the housing (1) is sleeved with an O-ring (3) that seals with the inner wall of the hole (11), characterized in that: A circular chamfer (12) is provided at the connection between the hole (11) and the outer end surface of the housing (1); A convex ring (22) is provided on the shaft sleeve (2) on the outer side of the plug-in portion (21), and one end surface of the convex ring (22) abuts against the outer end surface of the housing (1). The convex ring (22) has a circle of first through holes (23) distributed along the circumferential direction, and a circle of first threaded holes (13) corresponding to the positions of the first through holes (23) is provided on the outer end surface of the housing (1), and a plurality of stud bolts (24) respectively pass through the first through holes (23) and are threadedly connected to the first threaded holes (13) to fix the shaft sleeve (2) and the housing (1); and The convex ring (22) is provided with at least one pair of second threaded holes (25) facing each other, and a flat-end set screw (26) is detachably connected in the second threaded hole (25), and the flat-end set screw (26) is provided with a hexagonal wrench hole, and the flat-end set screw (26) is tightened to separate the shaft sleeve (2) and the housing (1); The distance L1 between the O-ring (3) and the outer end surface of the housing (1) is less than the length L2 of the flat-end set screw (26) and less than the thickness of the convex ring (22).

2. A shaft sleeve disassembly structure according to claim 1, characterized in that: The plug-in portion (21) is provided with an annular groove for accommodating the O-ring (3).

3. The shaft sleeve disassembly structure according to claim 1, characterized in that: The outer edge of the convex ring (22) does not protrude beyond the edge of the outer end surface of the shell (1).

4. A shaft sleeve disassembly structure as claimed in claim 3, characterized in that: The shaft sleeve (2) is integrally formed with the convex ring (22).

5. The shaft sleeve disassembly structure according to claim 1, characterized in that: The convex ring (22) is provided with eight first through holes (23) along the circumferential direction, and the convex ring (22) is provided with a pair of second threaded holes (25) arranged on both sides.

6. The shaft sleeve disassembly structure according to claim 1, characterized in that: The stud bolt (24) is a GB / T70.1 screw, and the flat-end set screw (26) is a GB / T 77 screw.

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