A type of anti-mechanical wave shaft sleeve

Abstract

This utility model relates to the field of bushing technology and discloses a mechanical wave resistant bushing, comprising a bushing body and two connecting members with a semi-circular plate structure. Two limiting rings extend radially from the outer circumference of the bushing body, and a rubber ring is axially fitted between the two limiting rings. An annular groove is formed on the outer circumference of the rubber ring, and the two connecting members are nested within the annular groove of the rubber ring. This application, through the combined use of the rubber ring, nylon rectangular block, and positioning rod, improves the tightness between the bushing and the connecting members. It not only ensures the connection stability between the connecting members and the bushing body but also effectively buffers bidirectional vibration between the connecting members and the bushing body using the buffering performance of the nylon block and rubber ring, further weakening the propagation of mechanical waves and reducing the impact and wear caused by mechanical waves on the power shaft and connecting members, thereby improving the operational reliability and service life of the entire mechanical system.

Description

Technical Field

[0001] This utility model relates to the field of bushing technology, specifically to a bushing that prevents mechanical waves. Background Technology

[0002] A bushing is a cylindrical mechanical part that fits onto a rotating shaft. It is a component of a sliding bearing and is generally used in conjunction with bearing housings and bearing bushes. It can also be used alone to support a rotating shaft, reducing shaft wear, supporting rotating parts, and transmitting power. In fan structures, the power shaft and the impeller's central disc are usually rigidly connected. This connection method is simple in structure and direct in transmission, but it cannot provide a buffering effect. When the impeller is rotating at high speed, the rigid connection between the power shaft and the impeller's central disc causes rigid transmission of vibration, which generates mechanical waves. The two-way mechanical waves will superimpose and amplify each other, thus intensifying the fan's vibration and generating significant noise, affecting the user experience. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an anti-mechanical wave bushing, which has advantages such as improved anti-mechanical wave performance and solves the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a mechanical wave resistant bushing, comprising a bushing body and two connecting members with a semi-circular plate structure. The outer circumferential surface of the bushing body extends radially to form two limiting rings. A rubber ring is sleeved between the two limiting rings along the axial direction of the bushing body. An annular groove is formed by inward indentation on the outer circumferential surface of the rubber ring. The two connecting members are nested in the annular groove of the rubber ring, and the connecting members are connected and limited to the bushing body in the axial and / or radial directions through the rubber ring.

[0005] Preferably, each of the two connectors has a set of slots extending into the rubber ring on its outer circumferential surface. Each slot has a T-shaped locking block inserted into it. The vertical part of each locking block is inserted into the rubber ring, and the horizontal part of the locking block is threaded to the connector.

[0006] Preferably, a rectangular notch is formed in the central area of ​​the vertical part of the card block that extends into the rubber ring, and a nylon rectangular block is fixedly installed in the rectangular notch, and a slot is formed in the central area of ​​the nylon rectangular block;

[0007] Each of the two limiting rings has a through-hole at the edge corresponding to the position of each nylon rectangular block, and the slot of each nylon rectangular block is coaxially set with the two corresponding mounting holes.

[0008] The rubber ring also has through grooves corresponding to the positions of each nylon rectangular block. The through grooves are coaxial with the slots of the nylon rectangular blocks. By inserting positioning rods between the two corresponding mounting holes, the connector and the bushing body are connected axially.

[0009] Preferably, each of the positioning rods has a threaded groove at its end, and a nut is screwed into the threaded groove to fix the connector.

[0010] Preferably, each of the connectors has two protrusions at the contact points, and the two contacting protrusions are fixed together by bolts.

[0011] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0012] This anti-mechanical wave bushing, through the combination of a rubber ring, a nylon rectangular block, and a positioning rod, and the locking of the positioning rod with a nut, improves the tightness between the bushing and the connecting parts. This not only ensures the connection stability between the connecting parts and the bushing body, but also effectively buffers bidirectional vibration between the connecting parts and the bushing body by utilizing the buffering performance of the nylon rectangular block and the rubber ring. The buffering effect further weakens the propagation of mechanical waves. The overall fixing method avoids the direct transmission of vibration and the rapid loss of energy caused by hard contact, reduces the impact and wear of mechanical waves on the power shaft and connecting parts, and thus improves the operational reliability and service life of the entire mechanical system. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this application. Figure 1 ;

[0014] Figure 2 This is an exploded view of the overall structure of this application;

[0015] Figure 3 Cross-sectional view of the overall structure of this application Figure 1 ;

[0016] Figure 4 Cross-sectional view of the overall structure of this application Figure 2 ;

[0017] Figure 5 This is a schematic diagram of the overall structure of this application. Figure 2 .

[0018] In the picture:

[0019] 1. Bushing body; 2. Connecting piece; 3. Limiting ring; 4. Rubber ring; 5. Slot; 6. Block; 7. Nylon rectangular block; 8. Mounting hole; 9. Positioning rod; 10. Threaded groove; 11. Nut; 12. Fixing hole; 13. Protrusion. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] Please see Figures 1-5 This embodiment of an anti-mechanical vibration bushing includes a bushing body 1 and two connectors 2 with a semi-circular plate structure. The outer circumferential surface of the bushing body 1 extends radially to form two limiting rings 3. A rubber ring 4 is sleeved between the two limiting rings 3 along the axial direction of the bushing body 1. The outer circumferential surface of the rubber ring 4 is recessed inward to form an annular groove. The two connectors 2 are nested in the annular groove of the rubber ring 4. Through the buffering performance of the rubber ring 4 itself, the bidirectional vibration between the connectors 2 and the external power shaft is reduced, thereby reducing the noise caused by vibration. At the same time, it can also reduce the fatigue damage of vibration to mechanical parts and extend the service life of the equipment. The structural design of the annular groove of the rubber ring 4 allows the rubber ring 4 to undergo elastic deformation when the connectors 2 are embedded in it, thereby forming a certain elastic force in both the axial and radial directions of the connectors 2. This not only ensures that the connectors 2 and the rubber ring 4 fit tightly, but also enhances the stability of the connection.

[0022] Both connectors 2 have a set of slots 5 extending into the rubber ring 4 on their outer circumferential surfaces. Each slot 5 has a T-shaped locking block 6 inserted inside. The vertical part of each locking block 6 is inserted into the rubber ring 4, and a rectangular notch is formed in the center area of ​​the end of the vertical part of each locking block 6 that extends into the rubber ring 4. A nylon rectangular block 7 is fixedly installed in the rectangular notch. The nylon rectangular block 7 can absorb and disperse the impact energy through elastic deformation when subjected to vibration or external impact, relying on its moderate elastic modulus and good toughness, thus assisting the rubber ring 4 in enhancing the buffering and vibration reduction effect. At the same time, its cooperation with the locking block 6 and the rubber ring 4 can also limit the displacement of the locking block 6 to a certain extent, thereby improving the stability of the overall structure.

[0023] Each nylon rectangular block 7 has a slot in its center. The edges of the two limiting rings 3 are provided with mounting holes 8 corresponding to the positions of each nylon rectangular block 7. The slot of each nylon rectangular block 7 is coaxial with the two corresponding mounting holes 8. The inside of the rubber ring 4 is also provided with a through groove corresponding to the position of each nylon rectangular block 7. The through groove is coaxial with the slot of the nylon rectangular block 7. After the connector 2 is embedded into the rubber ring 4 and the locking block 6 is inserted into the locking groove 5, the positioning rod 9 is inserted into the rubber ring 4 and the nylon rectangular block 7 from the mounting hole 8 on one side. The end of the positioning rod 9 passes through the mounting hole 8 on the other side. The end of the positioning rod 9 is provided with a threaded groove 10. The nut 11 is screwed into the threaded groove 10 to fix the connector 2.

[0024] Each locking block 6 has its transverse portion threadedly connected to the connector 2. The bolted connection provides mechanical locking force, ensuring a firm connection between the locking block 6 and the connector 2. Even under significant external impact or vibration, it will not easily loosen or separate, further enhancing the overall structural stability of the bushing body 1 and the connector 2. The use of two bolts increases the redundancy of the connection. If one bolt becomes loose or damaged, the other bolt can still provide a certain degree of connection. At the same time, the close contact can also disperse the stress borne by the bolt to a certain extent, reducing the risk of damage due to local stress concentration.

[0025] Both connectors 2 have a set of fixing holes 12 on their outer surfaces for mounting fan blades. Each set of fixing holes 12 has two holes. The two fixing holes 12 provide two fixing points for the fan blades. The two fixing points provide more balanced support for the fan blades, making the blades more evenly stressed during rotation, reducing vibration and shaking caused by uneven stress, reducing the risk of blade damage, and extending the service life of the blades.

[0026] Each connector 2 has two protrusions 13 at the contact points. The two contacting protrusions 13 are fixed together by bolts. By fixing the contacting protrusions 13 with bolts and tightening the bolts, the connection between the connectors 2 becomes tighter and more reliable. This effectively prevents the connectors 2 from relative displacement under vibration or external force, ensuring the stability of the overall structure of the bushing.

[0027] The working principle of the above embodiment is as follows: First, the rubber ring 4 is interference-fitted between the two limiting rings 3. It should be noted that the through groove inside the rubber ring 4 must be concentric with the mounting hole 8 on the limiting ring 3. Then, the two connecting pieces 2 are installed into the annular groove on the outer circumference of the rubber ring 4. Then, the locking block 6 is inserted into the corresponding locking slot 5. The positioning rod 9 is passed through the mounting hole 8, the rubber ring 4 and the nylon rectangular block 7. The other end of the positioning rod 9 is threaded and tightened with the nut 11. Finally, the two connecting pieces 2 are fixed with bolts through the protrusion 13. The transverse part of the locking block 6 is threadedly connected to the connecting piece 2 with bolts.

[0028] In use, the bushing body 1 is interference-fitted with the external power shaft. When the power shaft rotates, it will drive the bushing body 1 to rotate. During the rotation of the power shaft, the bidirectional vibration of the connecting piece 2 and the power shaft will be buffered and attenuated by the rubber ring 4 and the nylon rectangular block 7. The rubber ring 4 has high elasticity and good damping characteristics, which converts vibration energy into heat energy dissipation when vibration occurs. The nylon rectangular block 7, relying on its moderate elastic modulus and good toughness, further absorbs and disperses the impact energy through elastic deformation. The combination of the two can reduce vibration intensity. The overall fixing method avoids the direct transmission of vibration and rapid energy loss caused by hard contact, thereby improving the anti-mechanical wave performance of the bushing body 1. It can effectively reduce the impact and damage of mechanical waves on the power shaft and related mechanical components, and extend the service life of the equipment.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanical wave-resistant bushing, comprising a bushing body (1) and two connecting pieces (2) having a semi-circular plate structure, characterized in that: The outer circumferential surface of the bushing body (1) extends radially to form two limiting rings (3). A rubber ring (4) is sleeved between the two limiting rings (3) along the axial direction of the bushing body (1). An annular groove is formed inwardly on the outer circumferential surface of the rubber ring (4). The two connecting pieces (2) are nested in the annular groove of the rubber ring (4), and the connecting pieces (2) are connected and limited to the bushing body (1) in the axial and / or radial directions through the rubber ring (4).

2. The anti-mechanical wave shaft sleeve according to claim 1, characterized in that: Both connectors (2) have a set of slots (5) extending into the rubber ring (4) on their outer circumferential surfaces. Each slot (5) has a T-shaped locking block (6) inserted inside. The vertical part of each locking block (6) is inserted into the rubber ring (4), and the horizontal part of the locking block (6) is threaded to the connector (2).

3. The anti-mechanical wave shaft sleeve according to claim 2, characterized in that: The vertical part of the card block (6) extends into the center area of ​​the rubber ring (4) and a rectangular notch is formed. A nylon rectangular block (7) is fixedly installed in the rectangular notch. The center area of ​​the nylon rectangular block (7) is formed with a slot. The two limiting rings (3) are provided with mounting holes (8) at the edges corresponding to the positions of each nylon rectangular block (7), and the slot of each nylon rectangular block (7) is coaxially set with the two corresponding mounting holes (8); The rubber ring (4) has a through groove corresponding to the position of each nylon rectangular block (7). The through groove is coaxial with the slot of the nylon rectangular block (7). By inserting positioning rods (9) between the two corresponding mounting holes (8), the connector (2) and the bushing body (1) are connected in the axial direction.

4. The anti-mechanical wave shaft sleeve according to claim 3, characterized in that: Each of the positioning rods (9) has a threaded groove (10) at its end. The nut (11) is screwed into the threaded groove (10) to fix the connector (2).

5. The anti-mechanical wave shaft sleeve according to claim 1, characterized in that: Each of the connectors (2) has two protrusions (13) at the contact points, and the two contacting protrusions (13) are fixed together by bolts.

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