CN115992858A - Vibration isolator with axis capable of preventing shaft from falling off - Google Patents
Vibration isolator with axis capable of preventing shaft from falling off Download PDFInfo
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- CN115992858A CN115992858A CN202211520602.0A CN202211520602A CN115992858A CN 115992858 A CN115992858 A CN 115992858A CN 202211520602 A CN202211520602 A CN 202211520602A CN 115992858 A CN115992858 A CN 115992858A
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Abstract
The invention discloses an anti-falling vibration isolator for an axle center, which comprises an axle center, wherein the axle center is sleeved with an outer cylinder, the outer cylinder is coaxial with the axle center, and the outer cylinder and the axle center are connected through an elastic layer in a gap; the outer wall of the axle center and the inner wall of the outer cylinder are formed with groove tables for axial limiting, and the groove tables formed on the axle center and the groove tables formed on the outer cylinder have a movement gap along the axial direction. The groove platforms are arranged on the outer wall of the axle center and the inner wall of the outer cylinder at the same time, and the groove platforms formed on the outer wall of the axle center and the inner wall of the outer cylinder are provided with a certain movement gap along the axial direction so as to ensure that the axle center can axially move in the gap relative to the outer cylinder to realize shock absorption.
Description
Technical Field
The invention mainly relates to the technical field of vibration isolation devices, in particular to an axle center anti-falling vibration isolator.
Background
The vibration isolator is a resilient member connecting the device and the base to reduce and eliminate vibration forces transmitted by the device to the base and vibrations transmitted by the base to the device. The existing vibration isolator comprises two connecting parts connected through elastic pieces, wherein one connecting part is fixed with equipment, the other connecting part is fixed with a foundation, and when vibration is transmitted from the equipment to the foundation through the vibration isolator or transmitted from the foundation to the equipment through the vibration isolator, the vibration is absorbed through the elastic pieces so as to be reduced, so that the vibration isolation effect is achieved. The existing sleeve type rubber vibration isolator mostly comprises an axle center and a sleeve which is coated outside the axle center and connected with the axle center through rubber, wherein the sleeve is connected with a foundation when the axle center is connected with equipment or is connected with the equipment when the axle center is connected with the foundation. When vibration is transmitted from the equipment to the foundation through the vibration isolator or transmitted from the foundation to the equipment through the vibration isolator, the axial center and the sleeve are subjected to relative displacement along the axial direction, at the moment, the rubber is compressed and/or pulled within a certain limit, and the elastic property of the rubber is utilized to absorb the vibration, so that the vibration isolation effect is generated. However, when the vibration strength exceeds the bearing limit of the rubber, the rubber is damaged and fails under the relative displacement action of the axle center and the sleeve, and at the moment, the rubber loses the capacity of limiting the axle center and the sleeve to generate excessive relative displacement along the axial direction, so that the axle center is separated from the sleeve, namely, the equipment and the foundation are thoroughly separated, and further the damage is caused. Therefore, in order to avoid damage caused by complete separation of the equipment from the foundation in the event of rubber damage or failure, there is a need for an axial anti-slip vibration isolator.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing an axle center anti-falling vibration isolator.
In order to solve the technical problems, the invention adopts the following technical scheme:
the vibration isolator comprises an axle center, wherein the axle center is sleeved with an outer cylinder, the outer cylinder and the axle center are coaxial, and the outer cylinder and the axle center are connected through an elastic layer in a gap; the outer wall of the axle center and the inner wall of the outer cylinder are formed with groove tables for axial limiting, and the groove tables formed on the axle center and the groove tables formed on the outer cylinder have movement gaps along the axial direction.
As a further improvement of the above technical scheme:
the elastic layer is provided as a vulcanized rubber layer.
The groove table comprises a groove and a boss, wherein the groove formed on the outer wall of the axle center is opposite to the boss formed on the inner wall of the outer cylinder, and the groove formed on the outer wall of the outer cylinder is opposite to the boss formed on the inner wall of the axle center.
The axle center comprises an inner cylinder with an opening at one end and a groove table formed on the outer wall, a sliding block is arranged in the inner cylinder, and an elastic piece is clamped between the sliding block and a bottom plate of the inner cylinder.
The axle center comprises an inner cylinder with two open ends and a groove table formed on the outer wall, two sliding blocks are arranged in the inner cylinder, and an elastic piece is clamped between the two sliding blocks.
The inner cylinder comprises two inner half cylinders with groove tables formed on the outer walls, a central plate is clamped between the two inner half cylinders, and elastic pieces are clamped between the central plate and the sliding blocks.
The outer cylinder is formed by splicing two outer half cylinders with groove tables formed on the inner walls.
The sliding block is in a convex shape, and a limit ring for limiting the sliding block from falling out is formed at the opening of the inner cylinder.
The elastic member is provided as a spring.
The bottom bench of slider is gone up along axial shaping has the screw, the screw silk has connect the screw rod, it is equipped with the regulating plate to press from both sides between the inboard end of screw rod and the elastic component, the outside end of screw rod is worn out from the through-hole that the shaping was circled in the spacing.
Compared with the prior art, the invention has the advantages that:
the groove platforms are arranged on the outer wall of the axle center and the inner wall of the outer cylinder at the same time, and the groove platforms formed on the outer wall of the axle center and the inner wall of the outer cylinder are provided with a certain movement gap along the axial direction so as to ensure that the axle center can axially move in the gap relative to the outer cylinder to realize shock absorption.
Drawings
Fig. 1 is a schematic view of the structure of the vibration isolator in embodiment 1 (form one);
figure 2 is a schematic view of the vibration isolator of example 1 in a state in which the elastomeric layer is damaged and fails;
fig. 3 is a schematic view of the structure of the vibration isolator in embodiment 1 (form two);
fig. 4 is a schematic structural view of a vibration isolator in embodiment 2;
fig. 5 is a schematic view of the structure of the vibration isolator in embodiment 3;
fig. 6 is a schematic view of the structure of the vibration isolator in embodiment 4.
The reference numerals in the drawings denote: 1. an axle center; 11. an inner cylinder; 111. a bottom plate; 112. a limit ring; 113. an inner half cylinder; 114. a center plate; 115. a through hole; 12. a slide block; 121. a bottom stage; 122. a screw hole; 13. an elastic member; 2. an outer cylinder; 21. an outer half cylinder; 3. an elastic layer; 4. a trough table; 41. a groove; 42. a boss; 5. a screw; 6. and an adjusting plate.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific examples.
Example 1
As shown in fig. 1, the vibration isolator for preventing axial center from falling off in the embodiment comprises an axial center 1, wherein the axial center 1 is sleeved with an outer cylinder 2, the outer cylinder 2 is coaxial with the axial center 1, and the outer cylinder 2 and the axial center 1 are connected through an elastic layer 3 in a gap; the outer wall of the axle center 1 and the inner wall of the outer cylinder 2 are formed with a groove table 4 for axial limiting, and the groove table 4 formed on the axle center 1 and the groove table 4 formed on the outer cylinder 2 have a movement gap along the axial direction. When the external equipment vibrates in the axial direction and is transmitted to the axle center 1, the axle center 1 follows the external equipment to vibrate and cause extrusion and pulling on the elastic layer 3, and due to the elastic characteristic of the elastic layer 3, the elastic layer can elastically deform under the acting force of the axle center 1, so that the vibration is absorbed, and the vibration is prevented or reduced from being transmitted to the foundation through the outer barrel 2, and the vibration isolation effect is realized. When the vibration isolator is used for a long time to cause fatigue damage of the elastic layer 3, or when vibration force generated by external equipment exceeds the bearing limit of the elastic layer 3, the elastic layer 3 is damaged and fails, and breaks and moves under the extrusion action of the shaft center 1 and the outer cylinder 2 (as shown in fig. 2). According to the technical scheme disclosed by the application, the groove table 4 is arranged on the outer wall of the axle center 1 and the inner wall of the outer cylinder 2 at the same time, and the groove table 4 formed on the outer wall of the axle center 1 has a certain movement gap along the axial direction so as to ensure that the axle center 1 can axially move in the gap relative to the outer cylinder 2 to realize shock absorption, and when the elastic layer 3 is damaged and fails, the axial displacement of the axle center 1 relative to the outer cylinder 2 under the action of vibration force reaches the interval of the movement gap, the groove table 4 formed on the outer wall of the axle center 1 collides with the groove table 4 formed on the inner wall of the outer cylinder 2, so that the axle center 1 is prevented from falling out of the outer cylinder 2, and further, external equipment fixed with the axle center 1 is prevented from being separated from the outer basic chassis fixed with the outer cylinder 2 to cause damage.
In the present embodiment, the elastic layer 3 is provided as a vulcanized rubber layer. The vulcanized rubber has the excellent performances of high strength, high elasticity, high wear resistance, corrosion resistance and the like, and can enhance the vibration isolation performance and prolong the service life.
In this embodiment, the groove stand 4 includes a groove 41 and a boss 42, the groove 41 formed on the outer wall of the shaft center 1 is opposite to the boss 42 formed on the inner wall of the outer cylinder 2, and the groove 41 formed on the outer wall of the outer cylinder 2 is opposite to the boss 42 formed on the inner wall of the shaft center 1. The groove table 4 has an uneven or wavy structure formed by a plurality of grooves 41 and a plurality of bosses 42 alternately, and the groove table 4 formed on the outer wall of the shaft center 1 and the groove table 4 formed on the inner wall of the outer cylinder 2 are opposite in shape and mutually fit, so that when the shaft center 1 generates excessive relative motion relative to the outer cylinder 2 in the axial direction, the grooves 41 formed on the shaft center 1 can collide with the bosses 42 formed on the outer cylinder 2, and the bosses 42 formed on the shaft center 1 can collide with the grooves 41 formed on the outer cylinder 2. Furthermore, the groove table 4 is provided in an uneven or wavy structure, and the facing area of the surface of the shaft center 1 and the surface of the outer cylinder 2 can be increased, so that the filling amount of the elastic layer 3 can be increased, and the facing surfaces in different directions such as the axial direction and the circumferential direction can be formed, and when the shaft center 1 moves relative to the outer cylinder 2 in the axial direction, the elastic layer 3 can be simultaneously extruded and pulled, so that the vibration isolation effect is enhanced. In other embodiments, the groove table 4 may be formed in other forms, such as a convex slope for the groove table 4 on the shaft 1 and a concave slope for the groove table 4 on the outer cylinder 2 (as shown in fig. 3), so long as the maximum diameter of the groove table 4 formed on the shaft 1 is ensured to be larger than the minimum diameter of the groove table 4 formed on the outer cylinder 2.
Example 2
As shown in fig. 4, a second embodiment of the axial center anti-slip vibration isolator of the present invention is substantially the same as embodiment 1 except that: in this embodiment, the shaft center 1 includes an inner cylinder 11 with an opening at one end and a groove table 4 formed on the outer wall, a sliding block 12 is disposed in the inner cylinder 11, and an elastic member 13 is interposed between the sliding block 12 and a bottom plate 111 of the inner cylinder 11. When external equipment is axially vibrated and transmitted to the slide block 12, the slide block 12 follows the external equipment to vibrate and extrude/pull the elastic piece 13, and due to the elastic characteristic of the elastic piece 13, elastic deformation can be generated under the acting force of the slide block 12, so that vibration is absorbed, and the rest of vibration is transmitted to the elastic layer 3 through the inner cylinder 11 and is absorbed through the elastic layer 3, so that vibration is prevented or reduced from being transmitted to the foundation through the outer cylinder 2, and vibration isolation effect is realized. That is, by providing the slider 12 and the elastic member 13 in the inner tube 11, the load of the elastic layer 3 for absorbing vibration can be reduced, and the service life of the elastic layer 3 can be prolonged. Furthermore, by setting the elastic force of the elastic member 13 and the elastic layer 3, the order of absorbing vibration can be adjusted, and multi-level controllable vibration isolation can be realized.
In this embodiment, the sliding block 12 is in a convex shape, and a limit ring 112 for limiting the sliding block 12 from falling out is formed at the opening of the inner cylinder 11. When the elastic member 13 returns to its original state from its compressed state, it generates a pushing force on the slider 12, and the stopper 112 is provided to limit the stroke of the slider 12, thereby preventing the slider from being separated from the inner tube 11.
Example 3
As shown in fig. 5, a third embodiment of the axial center anti-slip vibration isolator of the present invention is substantially the same as embodiment 1 except that: in this embodiment, the shaft center 1 includes an inner cylinder 11 with two open ends and a groove table 4 formed on the outer wall, two sliding blocks 12 are arranged in the inner cylinder 11, and an elastic member 13 is sandwiched between the two sliding blocks 12. When external equipment is axially vibrated and transmitted to the slide block 12, the slide block 12 follows the external equipment to vibrate and extrude/pull the elastic piece 13, and due to the elastic characteristic of the elastic piece 13, elastic deformation can be generated under the acting force of the slide block 12, so that vibration is absorbed, and the rest of vibration is transmitted to the elastic layer 3 through the inner cylinder 11 and is absorbed through the elastic layer 3, so that vibration is prevented or reduced from being transmitted to the foundation through the outer cylinder 2, and vibration isolation effect is realized. That is, by providing the slider 12 and the elastic member 13 in the inner tube 11, the load of the elastic layer 3 for absorbing vibration can be reduced, and the service life of the elastic layer 3 can be prolonged. Furthermore, by setting the elastic force of the elastic member 13 and the elastic layer 3, the order of absorbing vibration can be adjusted, and multi-level controllable vibration isolation can be realized. And through opening and setting up slider 12 respectively at the both ends of inner tube 11 for a isolator can connect two external equipment (or outside basis), thereby expansion usage.
In this embodiment, the inner cylinder 11 includes two inner half cylinders 113 each having a groove table 4 formed in an outer wall thereof, a center plate 114 is interposed between the two inner half cylinders 113, and an elastic member 13 is interposed between the center plate 114 and the slider 12. The outer cylinder 2 is formed by assembling two outer half cylinders 21 with groove tables 4 formed on the inner walls. By providing the center plate 114, the two sliders 12 are connected to the elastic members 13 independently of each other, so that interference between the two sliders 12 can be avoided. The center plate 114 is mounted in a position facing the recess 41 formed in the inner wall of the outer cylinder 2, and the center plate 114 can collide with the recess 41 when the elastic layer 3 is broken or fails. While the center plate 114 has a diameter larger than the minimum inner diameter of the outer cylinder 2, the outer cylinder 2 is provided as an assembled body of two outer half cylinders 21, the spliced portions of which are located at the same mounting positions of the center plate 114, for ease of assembly.
In this embodiment, the sliding block 12 is in a convex shape, and a limit ring 112 for limiting the sliding block 12 from falling out is formed at the opening of the inner cylinder 11. When the elastic member 13 returns to its original state from its compressed state, it generates a pushing force on the slider 12, and the stopper 112 is provided to limit the stroke of the slider 12, thereby preventing the slider from being separated from the inner tube 11.
Example 4
As shown in fig. 6, a fourth embodiment of the axial center anti-slip vibration isolator according to the present invention is substantially the same as embodiment 2 or embodiment 3, except that: in the present embodiment, the elastic member 13 is provided as a spring. Screw holes 122 are formed in the bottom table 121 of the sliding block 12 along the axial direction, screw rods 5 are connected to the screw holes 122 in a threaded mode, an adjusting plate 6 is arranged between the inner side ends of the screw rods 5 and the elastic pieces 13 in a clamped mode, and the outer side ends of the screw rods 5 penetrate through holes 115 formed in the limiting rings 112. The adjusting plate 6 can be pushed to squeeze the corresponding elastic piece 13 by adjusting the depth of the screw 5 penetrating into the inner barrel 11, so that the elastic piece 13 has different initial elastic characteristics, and the absorption characteristics of the vibration isolator to vibration are changed.
While the invention has been described in terms of preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.
Claims (10)
1. An axle center anti-disengaging's isolator, its characterized in that: the novel high-strength plastic composite material comprises an axle center (1), wherein the axle center (1) is sleeved with an outer cylinder (2), the outer cylinder (2) is coaxial with the axle center (1), and the outer cylinder and the axle center are connected through an elastic layer (3) in a gap; the outer wall of the axle center (1) and the inner wall of the outer cylinder (2) are formed with groove tables (4) for axial limiting, and the groove tables (4) formed on the axle center (1) and the groove tables (4) formed on the outer cylinder (2) have movement gaps along the axial direction.
2. The axial anti-slip vibration isolator according to claim 1, wherein: the elastic layer (3) is provided as a vulcanized rubber layer.
3. The axial anti-slip vibration isolator according to claim 2, wherein: the groove table (4) comprises a groove (41) and a boss (42), wherein the groove (41) formed on the outer wall of the shaft center (1) is opposite to the boss (42) formed on the inner wall of the outer cylinder (2), and the groove (41) formed on the outer wall of the outer cylinder (2) is opposite to the boss (42) formed on the inner wall of the shaft center (1).
4. The axial anti-slip vibration isolator according to claim 3, wherein: the axle center (1) comprises an inner cylinder (11) with an opening at one end and a groove table (4) formed on the outer wall, a sliding block (12) is arranged in the inner cylinder (11), and an elastic piece (13) is clamped between the sliding block (12) and a bottom plate (111) of the inner cylinder (11).
5. The axial anti-slip vibration isolator according to claim 3, wherein: the axle center (1) comprises an inner cylinder (11) with two open ends and a groove table (4) formed on the outer wall, two sliding blocks (12) are arranged in the inner cylinder (11), and an elastic piece (13) is clamped between the two sliding blocks (12).
6. The axial anti-slip vibration isolator according to claim 5, wherein: the inner cylinder (11) comprises two inner half cylinders (113) with groove tables (4) formed on the outer walls, a central plate (114) is clamped between the two inner half cylinders (113), and elastic pieces (13) are clamped between the central plate (114) and the sliding blocks (12).
7. The axial anti-slip vibration isolator according to claim 6, wherein: the outer cylinder (2) is formed by assembling two outer half cylinders (21) with groove tables (4) formed on the inner walls.
8. The axial anti-slip vibration isolator according to any one of claims 4-7, wherein: the sliding block (12) is in a convex shape, and a limit ring (112) for limiting the sliding block (12) from falling out is formed at the opening of the inner cylinder (11).
9. The axial anti-slip vibration isolator according to any one of claims 4-7, wherein: the elastic element (13) is configured as a spring.
10. The axial anti-slip vibration isolator according to claim 9, wherein: screw holes (122) are formed in the bottom table (121) of the sliding block (12) along the axial direction, the screw holes (122) are connected with screw rods (5) in a threaded mode, an adjusting plate (6) is clamped between the inner side ends of the screw rods (5) and the elastic pieces (13), and the outer side ends of the screw rods (5) penetrate out of through holes (115) formed in the limiting rings (112).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211520602.0A CN115992858A (en) | 2022-11-29 | 2022-11-29 | Vibration isolator with axis capable of preventing shaft from falling off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211520602.0A CN115992858A (en) | 2022-11-29 | 2022-11-29 | Vibration isolator with axis capable of preventing shaft from falling off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115992858A true CN115992858A (en) | 2023-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211520602.0A Pending CN115992858A (en) | 2022-11-29 | 2022-11-29 | Vibration isolator with axis capable of preventing shaft from falling off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115992858A (en) |
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2022
- 2022-11-29 CN CN202211520602.0A patent/CN115992858A/en active Pending
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