A composite vibration isolator

Abstract

The utility model relates to a composite vibration isolator, including the symmetric setting end cover, is equipped with metal rubber column between end cover, and the spring is set outside the circumference of end cover, metal rubber column, metal rubber column is made into with wire mesh, the energy absorption grid of full rectangle is arranged in wire mesh middle, the process hole is in the middle of metal rubber column, and end cover includes end plate, and the one side of end plate is the component contact surface, and the other side middle is connected with end block, and is equipped with component connecting structure in end cover. The utility model designs metal rubber as hollow cylinder and inserts in the middle of linear spring, forms rigid-flexible coupling composite damping system. This design combines the nonlinear damping characteristic of metal rubber and the linear bearing advantage of spring, realizes multidirectional energy dissipation through the spatial interlacing of metal rubber net structure, and utilizes the stable stiffness of spring to improve the overall bearing capacity of system.

Description

Technical Field

[0001] This utility model belongs to the field of vibration isolator technology, and relates to composite vibration isolators. Background Technology

[0002] Vibration isolators are elastic elements that connect equipment and foundations to reduce and eliminate vibrational forces transmitted from the equipment to the foundation and vibrations transmitted from the foundation to the equipment.

[0003] Spring vibration isolators are widely used, and their biggest advantage is their low natural frequency, typically ranging from 2 to 6 Hz. Therefore, they offer excellent vibration isolation, especially effective for low-speed rotating equipment. Their disadvantage is low damping, usually with a damping ratio of approximately 0.001 to 0.05. Consequently, they generate severe vibrations when passing through the natural frequency range. When the excitation frequency exceeds a certain value, the vibration propagates as an elastic wave, failing to achieve the desired vibration isolation effect. Summary of the Invention

[0004] The purpose of this invention is to provide a composite vibration isolator that can solve the above-mentioned problems and significantly improve the overall performance of the vibration isolator.

[0005] According to the technical solution provided by this utility model: a composite vibration isolator includes symmetrically arranged end caps, with metal rubber columns between the end caps, and springs sleeved around the end caps and metal rubber columns; the metal rubber columns are made of metal wire mesh; the metal wire mesh is filled with rectangular energy-absorbing grids; the metal rubber columns have process holes in the middle; the end caps include end plates, one side of which is a component contact surface, and the other side is connected to an end block in the middle; the end caps have component connection structures.

[0006] As a further improvement of this utility model, the component connection structure is a screw hole and a positioning pin, with the ends of the screw hole and the positioning pin located on the component contact surface.

[0007] As a further improvement of this utility model, the screw hole extends through the end block.

[0008] As a further improvement of this utility model, the bottom of the positioning pin extends to the middle position of the end block.

[0009] As a further improvement of this utility model, the process hole and the screw holes on both sides are coaxially arranged.

[0010] As a further improvement of this utility model, the end face of the end block is a metal-rubber column contact surface, and the metal-rubber column contact surface is a plane.

[0011] As a further improvement of this utility model, the spring is a variable pitch spring with small pitch at both ends and large pitch in the middle; the outer periphery of the end block is provided with a spring positioning groove, and the other part of the end plate, except for the part connected to the end block in the middle, is the spring contact surface, and the small pitch sections at both ends of the spring are embedded in the spring positioning groove.

[0012] As a further improvement of this utility model, both ends of the spring are machined into flat surfaces, and correspondingly, the spring contact surface is also flat.

[0013] The positive and progressive effects of this application are as follows:

[0014] 1. This utility model designs a hollow cylindrical metal rubber core embedded in the middle of a linear spring, forming a rigid-flexible coupled composite damping system. This design combines the nonlinear damping characteristics of metal rubber with the linear load-bearing advantage of a spring, achieving multi-directional energy dissipation through the spatial interlacing of the metal rubber mesh structure, while utilizing the stable stiffness of the spring to enhance the overall load-bearing capacity of the system.

[0015] 2. This utility model overcomes the limitations of single materials by combining metal rubber and springs. The metal rubber is made of pure metal wire mesh woven into a porous structure, which has the characteristics of high and low temperature resistance, corrosion resistance, and aging resistance, making up for the environmental adaptability defects of traditional rubber materials; the spring provides controllable linear stiffness and support stability, and the synergistic effect of the two significantly improves the overall performance of the vibration isolator.

[0016] 3. This invention effectively solves the problems of high-frequency failure and insufficient damping. Its high damping ratio and nonlinear stiffness characteristics can suppress low-frequency resonance and adapt to complex vibration environments, meeting the integrated vibration reduction requirements of precision equipment such as aerospace, and providing a new technical path for civilian fields such as automobiles and railways. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 for Figure 1 AA sectional view.

[0019] Figure 3 This is a schematic diagram of the end cap structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of the metal wire mesh of this utility model. Detailed Implementation

[0021] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this utility model described herein. Furthermore, terms such as "comprising" and "having" mean that in addition to those already listed in "comprising" and "having," other unlisted contents may also be included; for example, a process, method, system, product, or device may include a series of steps or units, not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0024] Due to the angle of the drawing, some parts may not be drawn, but their positions and connections can be understood from the text descriptions.

[0025] like Figure 1 As shown, this utility model is a composite vibration isolator, including symmetrically arranged end caps 1, metal rubber columns 2 between the end caps 1, and springs 3 sleeved around the end caps 1 and the metal rubber columns 2.

[0026] like Figure 3 As shown, the end cap 1 includes an end plate 1-1, one side of which is a component contact surface 1-11, and the other side is connected to the end block 1-2 in the middle. The end cap 1 has a component connection structure, such as... Figure 2 As shown, in this embodiment, the component connection structure is a screw hole 1-3 and a positioning pin 1-4. The ends of the screw hole 1-3 and the positioning pin 1-4 are located on the component contact surface 1-11. The screw hole 1-3 extends through the end block 1-2, and the bottom of the positioning pin 1-4 extends to the middle position of the end block 1-2.

[0027] The metal-rubber column 2 is made of metal wire mesh 4. For example... Figure 4 As shown, the metal wire mesh 4 is filled with rectangular energy-absorbing grids 4-1. The metal wire mesh 4 is wound around the mandrel and then processed into a column shape. The metal rubber column 2 has a process hole 2-1 in the middle.

[0028] The process hole 2-1 and the screw holes 1-3 on both sides are coaxially set, which can prevent the bolt from interfering with the metal rubber column 2.

[0029] The end face of end block 1-2 is the metal rubber column contact surface 1-21. The metal rubber column contact surface 1-21 is a plane to ensure stable contact of the metal rubber column 2.

[0030] Spring 3 is a variable pitch spring, with small pitch at both ends and large pitch in the middle. The outer periphery of end block 1-2 is provided with spring positioning groove 1-22. The other part of end plate 1-1, except for the part in the middle that connects with end block 1-2, is the spring contact surface 1-12. The small pitch sections at both ends of spring 3 are embedded in the spring positioning groove 1-22.

[0031] The two ends of spring 3 are in close contact with the spring contact surfaces 1-12. Therefore, in order to ensure that spring 3 provides stable shock resistance, the two ends of spring 3 are machined into flat surfaces. Correspondingly, the spring contact surfaces 1-12 are also flat surfaces.

[0032] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A composite vibration isolator, characterized in that, The device includes symmetrically arranged end caps (1), with metal rubber pillars (2) between the end caps (1), and springs (3) fitted around the outer periphery of the end caps (1) and the metal rubber pillars (2); the metal rubber pillars (2) are made of metal wire mesh (4); the metal wire mesh (4) is filled with rectangular energy-absorbing grids (4-1); the metal rubber pillars (2) have a process hole (2-1) in the middle; the end caps (1) include end plates (1-1), one side of the end plates (1-1) is a component contact surface (1-11), and the middle of the other side is connected to the end block (1-2); the end caps (1) have a component connection structure.

2. The composite vibration isolator as described in claim 1, characterized in that, The component connection structure consists of a screw hole (1-3) and a locating pin (1-4), with the ends of the screw hole (1-3) and the locating pin (1-4) located on the component contact surface (1-11).

3. The composite vibration isolator as described in claim 2, characterized in that, The screw hole (1-3) extends through the end block (1-2).

4. The composite vibration isolator as described in claim 2, characterized in that, The bottom of the locating pin (1-4) extends to the middle position of the end block (1-2).

5. The composite vibration isolator as described in claim 1, characterized in that, The process hole (2-1) and the screw holes (1-3) on both sides are coaxially arranged.

6. The composite vibration isolator as described in claim 1, characterized in that, The end face of the end block (1-2) is the metal-rubber column contact surface (1-21), and the metal-rubber column contact surface (1-21) is a plane.

7. The composite vibration isolator as described in claim 1, characterized in that, The spring (3) is a variable pitch spring with small pitch at both ends and large pitch in the middle; the outer periphery of the end block (1-2) is provided with a spring positioning groove (1-22), and the other part of the end plate (1-1) except for the part connected to the end block (1-2) in the middle is the spring contact surface (1-12), and the small pitch sections at both ends of the spring (3) are embedded in the spring positioning groove (1-22).

8. The composite vibration isolator as described in claim 1, characterized in that, The two ends of the spring (3) are machined into planes, and correspondingly, the spring contact surfaces (1-12) are planes.

Images