Shaft sleeve and enclasping structure

Abstract

The utility model discloses a shaft sleeve and a clasping structure, and belongs to the field of couplings, the shaft sleeve comprises a connecting part and a sleeving part extending out of the connecting part, the sleeving part and the connecting part are coaxially arranged, the sleeving part is of a hollow structure and forms a mounting hole penetrating through the shaft sleeve, and the mounting hole is used for mounting a shaft. The section, perpendicular to the axial direction, of any position of the sleeving part is a continuous end-to-end circular ring, that is, no kerf is arranged, so that difficulty in mounting and dismounting caused by deformation during mounting of the shaft sleeve is avoided; the enclasping force applied to the shaft by the sleeving part is uniform, and slipping is avoided under the condition of the same hole diameter and the same torque.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, in particular to a shaft sleeve and a clamping structure. Background Art

[0002] A coupling refers to a device that connects two shafts or a shaft and a rotating part, rotates together during the transmission of motion and power, and does not disengage under normal circumstances. Sometimes it is also used as a safety device to prevent the connected machine parts from bearing excessive loads and play an overload protection role. As shown in the shaft sleeve in the existing coupling, such as the anti-disengagement coupling diaphragm shaft sleeve in Patent CN213145143U, the shaft sleeve is provided with slits, which causes deformation during the installation of the shaft sleeve and the deformation is difficult to control, which is not conducive to the installation and disassembly of the shaft sleeve; and the existence of the slits results in uneven circumferential wall thickness of the shaft sleeve, making the clamping force exerted by the shaft sleeve on the shaft uneven and the shaft prone to slipping. Content of the Utility Model

[0003] In order to overcome the deficiencies of the prior art, one of the purposes of the present utility model is to provide a shaft sleeve that is not easily deformed during installation and has a uniform clamping force.

[0004] In order to overcome the deficiencies of the prior art, the second purpose of the present utility model is to provide a clamping structure that is not easily deformed during installation and has a uniform clamping force.

[0005] One of the purposes of the present utility model is achieved by adopting the following technical solutions:

[0006] A shaft sleeve, comprising a connecting portion and a sleeving portion extending from the connecting portion, the sleeving portion is coaxially arranged with the connecting portion, the sleeving portion is a hollow structure forming an installation hole penetrating through the shaft sleeve, the installation hole is used for installing a shaft, and the cross-section of any position of the sleeving portion perpendicular to the axial direction is a continuous ring connected end to end.

[0007] Further, along the axial direction, the aperture of the sleeving portion is different, and in the circumferential direction of the sleeving portion, the thicknesses of the sleeving portions with different apertures are equal.

[0008] Further, the connecting portion is located at one end of the sleeving portion, and along the axial direction of the shaft sleeve, the thickness of the sleeving portion away from the connecting portion gradually decreases.

[0009] Further, the sleeving portion includes an outer surface and an inner surface, the outer surface is a conical surface, and the inner surface is a cylindrical surface.

[0010] Further, a chamfer is provided at one end of the sleeving portion away from the connecting portion.

[0011] Further, the connecting portion extends from the bottom end of the sleeving portion and is in a circular ring shape.

[0012] Furthermore, the connecting portion is provided with a plurality of first fixing holes, and the plurality of first fixing holes are evenly distributed on the circumference.

[0013] Furthermore, the first fixing hole is a threaded hole.

[0014] Furthermore, the connecting portion is provided with a plurality of avoidance holes. The avoidance hole includes a cavity and a through hole communicating with the cavity. The through hole is coaxially arranged with the cavity, the diameter of the through hole is smaller than the diameter of the cavity, and the through hole is located on the side of the connecting portion close to the sleeving portion.

[0015] The second object of the present utility model is achieved by adopting the following technical solution:

[0016] A clamping structure includes a shaft and any one of the above-mentioned shaft sleeves. The shaft sleeve is sleeved outside the shaft, and at least part of the shaft is located in the mounting hole.

[0017] Compared with the prior art, the shaft sleeve of the present utility model has the following advantages:

[0018] (1) The cross-section perpendicular to the axial direction at any position of the sleeving portion is a continuous and end-to-end connected ring, that is, there is no cut, avoiding the difficulties in installation and disassembly caused by deformation during the installation of the shaft sleeve.

[0019] (2) In the circumferential direction of the sleeving portion, the thickness of the sleeving portion is equal, and the clamping force exerted by the sleeving portion on the shaft is uniform. Under the same aperture and the same torque, slipping is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional view of the coupling;

[0021] Figure 2 is Figure 1 a partial structure three-dimensional view of the coupling;

[0022] Figure 3 is Figure 2 a partial structure three-dimensional cross-sectional view of the coupling;

[0023] Figure 4 is a three-dimensional view of the shaft sleeve of the present utility model;

[0024] Figure 5 is Figure 4 another three-dimensional view of the shaft sleeve;

[0025] Figure 6 is Figure 4 a three-dimensional cross-sectional view of the shaft sleeve.

[0026] In the figure: 100, spacer; 200, clamping assembly; 201, outer ring; 202, bushing; 10, connecting portion; 11, avoidance hole; 110, cavity; 111, through hole; 12, first fixing hole; 13, second fixing hole; 20, sleeving portion; 21, outer surface; 22, inner surface; 30, mounting hole; 203, diaphragm; 204, shaft collar; 205, shaft end flange. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be another intermediate component for fixing through the intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be another intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0030] As Figures 1 to 3 shown, the bushing 201 of the present invention is applied to a coupling, and the coupling includes a spacer 100 and clamping assemblies 200 located at both ends of the spacer 100 and coaxially arranged with the spacer 100.

[0031] Each clamping component 200 includes an outer ring 201, a bushing 202, a diaphragm 203, a collar 204, and a shaft end flange 205. The outer ring 201, the bushing 202, the diaphragm 203, the collar 204, and the shaft end flange 205 are coaxially arranged. The outer ring 201 is fixed to the bushing 202 and sleeved outside the bushing 202. The diaphragm 203 is located between the bushing 202 and the collar 204, and the diaphragm 203 is fixedly connected to both the bushing 202 and the collar 204. The shaft end flange 205 is partially sleeved inside the spacer 100 and has an interference fit with the spacer 100, and the shaft end flange 205 is fixedly connected to the collar 204.

[0032] As Figure 4 shown, the bushing 202 includes a connecting portion 10 and a sleeved portion 20. The sleeved portion 20 extends from the connecting portion 10 to form an integral structure. The sleeved portion 20 is coaxially arranged with the connecting portion 10. The sleeved portion 20 is a hollow structure, forming a mounting hole 30 penetrating through the bushing 202. The mounting hole 30 is used for mounting a shaft and clamping the shaft.

[0033] Please continue to refer to Figure 5 , the connecting portion 10 is used for fixedly connecting the bushing 202 with the outer ring 201 and the diaphragm 203. The connecting portion 10 is integrally circular, and the inner diameter of the connecting portion 10 is the same as the inner diameter of the sleeved portion 20. The connecting portion 10 is provided with an avoidance hole 11, a first fixing hole 12, and a second fixing hole 13. The avoidance hole 11 is used for accommodating the mounting member on the diaphragm 203. The first fixing hole 12 is used for fixing the connecting portion 10 to the outer ring 201. The second fixing hole 13 is used for fixing the connecting portion 10 to the diaphragm 203.

[0034] Specifically, the number of avoidance holes 11 is multiple, and the multiple avoidance holes 11 are evenly distributed. Each avoidance hole 11 includes a cavity 110 and a through hole 111 communicating with the cavity 110. The cavity 110 is cylindrical, the cavity 110 is coaxially arranged with the through hole 111, and the diameter of the through hole 111 is smaller than the diameter of the cavity 110. The through hole 111 is located on the side of the connecting portion 10 close to the sleeved portion 20.

[0035] The number of first fixing holes 12 is multiple, and the multiple first fixing holes 12 are evenly distributed and located on a circumference. The center of the circumference is located on the axis. The evenly distributed first fixing holes 12 make the force evenly distributed when the connecting portion 10 is fixed to the outer ring 201. Each first fixing hole 12 is a threaded hole.

[0036] The number of second fixing holes 13 is multiple, and the multiple second fixing holes 13 are evenly distributed. Each second fixing hole 13 is a threaded hole.

[0037] Please continue to refer to Figure 6, the cross-section perpendicular to the axial direction at any position of the sleeving part 20 is a continuous and end-to-end ring, that is, there is no slit on the sleeving part 20, avoiding the difficulties in installation and disassembly caused by the deformation during the installation of the bushing 202. And the absence of a slit on the sleeving part 20 can further ensure that the thickness of the sleeving part 20 is equal in the circumferential direction of the sleeving part 20. The sleeving part 20 is generally conical to facilitate the generation of a clamping force.

[0038] The sleeving part 20 includes an outer surface 21 and an inner surface 22. The outer surface 21 is a conical surface, and the inner surface 22 is cylindrical. Along the axial direction of the bushing 202, the thickness of the sleeving part 20 away from the connecting part 10 gradually decreases to facilitate the generation of a clamping force. One end of the sleeving part 20 away from the connecting part 10 is provided with a chamfer to facilitate the installation of the shaft.

[0039] In this application, the cross-section perpendicular to the axial direction of the sleeving part 20 is a continuous and end-to-end ring, that is, there is no slit on the sleeving part 20, avoiding the difficulties in installation and disassembly caused by the deformation during the installation of the bushing 202; along the axial direction, the aperture of the sleeving part 20 is different, and in the circumferential direction of the sleeving part 20, the thickness of the sleeving part 20 with different apertures is equal. The clamping force exerted by the sleeving part 20 on the shaft is uniform. The absence of a slit on the sleeving part 20 further ensures that the clamping force exerted by the sleeving part 20 on the shaft is uniform. At the same aperture and the same torque, slipping is avoided.

[0040] The above embodiments only represent several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can be made. These are all equivalent modifications and evolutions made to the above embodiments based on the essential technology of the present utility model, and these all belong to the protection scope of the present utility model.

Claims

1. A bushing, comprising a connecting portion and a sleeving portion extending from the connecting portion, the sleeving portion being coaxially arranged with the connecting portion, the sleeving portion being a hollow structure to form a mounting hole penetrating through the bushing, the mounting hole being used for mounting a shaft, and characterized in that: The cross-section perpendicular to the axial direction at any position of the sleeving part is a continuous and end-to-end ring.

2. The bushing according to claim 1, characterized in that: Along the axial direction, the aperture diameters of the sleeving part are different. In the circumferential direction of the sleeving part, the thicknesses of the sleeving parts with different aperture diameters are equal.

3. The bushing according to claim 1, characterized in that: The connecting part is located at one end of the sleeving part. Along the axial direction of the shaft sleeve, the thickness of the sleeving part away from the connecting part gradually decreases.

4. The bushing according to claim 3, wherein: The sleeving part includes an outer surface and an inner surface. The outer surface is a conical surface, and the inner surface is a cylindrical surface.

5. The bushing according to claim 3, wherein: A chamfer is provided at one end of the sleeving part away from the connecting part.

6. The bushing according to claim 1, wherein: The connecting part extends from the bottom end of the sleeving part and is in a circular ring shape.

7. The bushing according to claim 1, characterized in that: The connecting part is provided with a plurality of first fixing holes, and the plurality of first fixing holes are evenly distributed on the circumference.

8. The bushing according to claim 7, characterized in that: The first fixing hole is a threaded hole.

9. The bushing according to claim 7, wherein: The connecting part is provided with a plurality of avoiding holes. The avoiding hole includes a cavity and a through hole communicating with the cavity. The through hole is coaxially arranged with the cavity, the diameter of the through hole is smaller than the diameter of the cavity, and the through hole is located on the side of the connecting part close to the sleeving part.

10. Clamping structure, including a shaft, characterized in that: It further includes a shaft sleeve as described in any one of claims 1-9. The shaft sleeve is sleeved outside the shaft, and at least part of the shaft is located in the mounting hole.

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