Shaft sleeve with adjusting structure

Abstract

The utility model provides a shaft sleeve with an adjusting structure, which comprises a shaft sleeve body, an adjusting unit, a positioning unit and a sealing unit, the adjusting unit, the positioning unit and the sealing unit are arranged in the shaft sleeve body, the shaft sleeve is circumferentially adjusted by the adjusting unit, the shaft sleeve is positioned by the positioning unit, and the sealing performance of a rotating shaft is ensured by the sealing unit. By arranging the radial through hole and the axial notch, the shaft sleeve has a deformation buffering space, cold air and lubricating oil can enter the shaft sleeve through the radial through hole and the axial notch to exchange heat in the shaft sleeve, the contact surface of the shaft sleeve and a rotating shaft is prevented from being overheated, and the service life of the shaft sleeve is prolonged. The gap between the shaft sleeve and the rotating shaft is sealed through the sealing unit, the sealing performance of the shaft sleeve is improved, lubrication of the shaft sleeve and the rotating shaft is guaranteed, the service life of the shaft sleeve and the rotating shaft is prolonged, the sealing mechanism is positioned multiple times through the primary step opening and the secondary step opening, and the assembling precision of the shaft sleeve and the sealing mechanism is improved. And meanwhile, the shaft sleeve is fixed more stably.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft sleeves, in particular to a shaft sleeve with an adjustment structure. Background Art

[0002] Patent document CN220505611U discloses a flattening ring sleeve, comprising a sleeve body, the sleeve body being sleeved on the outside of the shaft body, the inner wall of the sleeve body being slidably connected to a limit piece, the fixing clamping ring being clamped with a fixing clamping ring for controlling the state of the limit piece through a clamping piece, the fixing clamping ring being slidably connected to one end of the limit piece, the inner wall of the sleeve body being provided with a limiting sliding groove adapted to match the limiting piece, the bottom surface of a side portion of the limiting sliding groove which is fitted with the fixing clamping ring being inclined, the clamping piece comprising a clamping rod and a limiting hole, the clamping rod being fixedly connected to the side where the sleeve body and the fixing clamping ring are fitted, the limiting hole being penetrated and arranged in the interior of the fixing clamping ring, the limiting hole being adapted to the clamping rod, and a protrusion being provided at one end of the clamping rod which is away from the sleeve body. The device can solve the problems that the existing sleeve installation and disassembly are relatively complicated, and the shaft body and the sleeve are subjected to large losses during the disassembly process.

[0003] However, the existing shaft sleeve has poor sealing performance, and the lubricating oil will flow out through the shaft sleeve and the rotating shaft, causing the friction between the shaft sleeve and the rotating shaft to increase, thereby reducing the service life of the shaft sleeve and the rotating shaft. Therefore, it is necessary to improve such a structure to overcome the above defects. Utility Model Content

[0004] The purpose of the utility model is to provide a shaft sleeve with an adjustment structure to solve the problems raised in the above background technology.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A shaft sleeve with an adjustment structure comprises a shaft sleeve body, and also comprises an adjustment unit, a positioning unit and a sealing unit arranged in the shaft sleeve body, wherein the adjustment unit performs circumferential adjustment on the shaft sleeve, the positioning unit positions the shaft sleeve, and the sealing unit ensures the sealing of the rotating shaft;

[0007] The adjustment unit includes a radial through hole and an axial notch. The radial through hole is formed on one side of the sleeve body. A group of radial through holes are provided. The radial through hole passes through the sleeve body. The inner side and the outer side of the sleeve are connected by the radial through hole. The axial notch is formed in the sleeve body. The axial notch is rectangular and passes through the sleeve body. One end of the axial notch is connected to the radial through hole.

[0008] The utility model is further configured that the positioning unit comprises:

[0009] A positioning ring groove is formed on the outer side of the sleeve body, is recessed radially toward the inside of the sleeve body, and extends circumferentially, and has an assembly space therein;

[0010] An engaging groove is formed on the outer surface of the sleeve body, the engaging groove is recessed radially toward the inner side of the sleeve body, and extends circumferentially around the sleeve body, and has an accommodating space in the engaging groove;

[0011] A primary step is formed on the sleeve body, the primary step is recessed toward the inner side of the sleeve body along the circumferential direction, and extends around the sleeve body along the circumferential direction for one circle, and the sealing mechanism is positioned by the primary step;

[0012] The secondary step is formed in the sleeve body, is recessed toward the inner side of the sleeve body along the axial direction, and extends circumferentially around the sleeve body for a circle, and the sealing mechanism is positioned secondary by the secondary step.

[0013] The utility model is further configured that the sealing unit comprises:

[0014] A sealing groove is formed on the inner surface of the sleeve body. The sealing groove is recessed radially toward the outer side of the sleeve body and extends circumferentially. A space for accommodating a sealing ring is provided in the sealing groove.

[0015] The utility model is further configured such that the inner diameter of the primary step opening is greater than the inner diameter of the secondary step opening.

[0016] The utility model is further configured such that the depth of the secondary step opening is greater than the depth of the primary step opening.

[0017] The utility model is further configured that chamfer structures are provided at both ends of the positioning ring groove.

[0018] The utility model is further configured such that the inner diameter of the radial through hole is greater than the width of the circumferential notch.

[0019] The advantages of the utility model are:

[0020] 1. The utility model provides a radial through hole and an axial notch so that the shaft sleeve has a certain deformation buffer space. At the same time, cold air and lubricating oil can enter the interior of the shaft sleeve through the radial through hole and the axial notch to exchange heat inside the shaft sleeve, thereby effectively preventing the contact surface between the shaft sleeve and the rotating shaft from overheating.

[0021] 2. The utility model seals the gap between the shaft sleeve and the rotating shaft by setting a sealing unit, thereby increasing the sealing performance of the shaft sleeve, effectively preventing the lubricating oil from flowing out of the gap, ensuring the lubrication of the shaft sleeve and the rotating shaft, and increasing the service life of the shaft sleeve and the rotating shaft.

[0022] 3. The utility model positions the sealing mechanism multiple times by setting the primary step and the secondary step, thereby increasing the assembly accuracy of the shaft sleeve and the sealing mechanism, and at the same time making the fixing of the shaft sleeve more stable and making the shaft sleeve more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of the shaft sleeve with an adjustment structure proposed by the utility model.

[0024] Figure 2 It is a cross-sectional view of the shaft sleeve with an adjustment structure proposed by the utility model.

[0025] Figure 3 It is a stereoscopic diagram of the shaft sleeve with an adjustment structure proposed by the utility model.

[0026] Numeral symbols: sleeve body 100, radial through hole 110, axial notch 120, positioning ring groove 210, fitting groove 220, primary step 230, secondary step 240, sealing groove 310 DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0028] like Figure 1-3 As shown, the utility model provides a shaft sleeve with an adjustment structure, including a shaft sleeve body 100, and also including an adjustment unit, a positioning unit and a sealing unit arranged in the shaft sleeve body, wherein the adjustment unit performs circumferential adjustment on the shaft sleeve, the positioning unit positions the shaft sleeve, and the sealing unit ensures the sealing of the rotating shaft;

[0029] The adjustment unit includes a radial through hole 110 and an axial notch 120. The radial through hole is formed on one side of the sleeve body. A group of radial through holes are provided. The radial through holes pass through the sleeve body. The inner side of the sleeve is connected with the outer side by the radial through holes, so that the lubricating oil can enter the interior of the sleeve through the radial through holes to lubricate and cool the connection between the sleeve and the rotating shaft. The axial notch is formed in the sleeve body. The axial notch is rectangular and passes through the sleeve body. One end of the axial notch is connected to the radial through hole.

[0030] In this embodiment, the positioning unit includes a positioning ring groove 210, an engaging groove 220, a primary step 230 and a secondary step 240. The positioning ring groove is formed on the outer side of the sleeve body, is recessed radially toward the inside of the sleeve body, and extends circumferentially. The positioning ring groove has an assembly space. The engaging groove is formed on the outer surface of the sleeve body, is recessed radially toward the inside of the sleeve body, and extends circumferentially around the sleeve body. The engaging groove has an accommodating space. The primary step is formed in the sleeve body, is recessed circumferentially toward the inside of the sleeve body, and extends circumferentially around the sleeve body. The sealing mechanism is positioned by the primary step. The secondary step is formed in the sleeve body, is recessed axially toward the inside of the sleeve body, and extends circumferentially around the sleeve body. The sealing mechanism is positioned by the secondary step.

[0031] In this embodiment, the sealing unit includes a sealing groove 310 formed on the inner surface of the sleeve body. The sealing groove is recessed radially toward the outer side of the sleeve body and extends circumferentially. A space for accommodating a sealing ring is provided in the sealing groove.

[0032] In this embodiment, the inner diameter of the primary step is greater than the inner diameter of the secondary step.

[0033] In this embodiment, the depth of the secondary step is greater than the depth of the primary step.

[0034] In this embodiment, chamfered structures are provided at both ends of the positioning ring groove. When the sealing mechanism is assembled, the chamfered structures can guide the sealing mechanism, making the assembly more convenient.

[0035] In this embodiment, the inner diameter of the radial through hole is greater than the width of the circumferential notch.

[0036] In the description of the present utility model, it should be noted that when terms such as "upper", "lower", "inner", "outer", "left", "right" and the like indicating orientation or positional relationship appear, it should be understood that the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, when terms such as "first" and "second" appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, terms such as "installation", "setting", and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. A sleeve with an adjustment structure, comprising a sleeve body, characterized in that: It also includes an adjustment unit, a positioning unit and a sealing unit arranged in the sleeve body, wherein the adjustment unit performs circumferential adjustment on the sleeve, the positioning unit positions the sleeve, and the sealing unit ensures the sealing of the rotating shaft; The adjustment unit includes a radial through hole and an axial notch. The radial through hole is formed on one side of the sleeve body. A group of radial through holes are provided. The radial through hole passes through the sleeve body. The inner side and the outer side of the sleeve are connected by the radial through hole. The axial notch is formed in the sleeve body. The axial notch is rectangular and passes through the sleeve body. One end of the axial notch is connected to the radial through hole.

2. A shaft sleeve with an adjustment structure according to claim 1, characterized in that: The positioning unit includes: A positioning ring groove is formed on the outer side of the sleeve body, is recessed radially toward the inside of the sleeve body, and extends circumferentially, and has an assembly space therein; An engaging groove is formed on the outer surface of the sleeve body, the engaging groove is recessed radially toward the inner side of the sleeve body, and extends circumferentially around the sleeve body, and has an accommodating space in the engaging groove; A primary step is formed on the sleeve body, the primary step is recessed toward the inner side of the sleeve body along the circumferential direction, and extends around the sleeve body along the circumferential direction for one circle, and the sealing mechanism is positioned by the primary step; The secondary step is formed in the sleeve body, is recessed toward the inner side of the sleeve body along the axial direction, and extends circumferentially around the sleeve body for a circle, and the sealing mechanism is positioned secondary by the secondary step.

3. The shaft sleeve with an adjustment structure according to claim 1, characterized in that: The sealing unit consists of: A sealing groove is formed on the inner surface of the sleeve body. The sealing groove is recessed radially toward the outer side of the sleeve body and extends circumferentially. A space for accommodating a sealing ring is provided in the sealing groove.

4. The shaft sleeve with an adjustment structure according to claim 2, characterized in that: The inner diameter of the primary stage is larger than the inner diameter of the secondary stage.

5. The shaft sleeve with an adjustment structure according to claim 2, characterized in that: The depth of the secondary step is greater than the depth of the primary step.

6. The shaft sleeve with an adjustment structure according to claim 2, characterized in that: Both ends of the positioning ring groove are provided with chamfer structures.

7. The shaft sleeve with an adjustment structure according to claim 1, characterized in that: The inner diameter of the radial through hole is greater than the width of the circumferential notch.

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