Composite damping rubber steel wire rope vibration isolator

Abstract

The invention relates to the technical field of vibration isolators, in particular to a composite damping rubber steel wire rope vibration isolator. The device comprises an upper mounting module, a lower mounting module and a deformation module, the deformation module is arranged between the upper mounting module and the lower mounting module, and the deformation module can generate elastic deformation, so that elastic connection is formed between the upper mounting module and the lower mounting module; the deformation module comprises at least one group of composite rolls, two groups of composite parts and a vulcanized rubber structure, and the composite rolls and the composite parts have elastic deformation capacity and can absorb vibration through elastic deformation. According to the vibration isolator, viscous damping and dry friction damping are combined together, the respective advantages of the two kinds of damping are brought into full play, and the composite damping of the vibration isolator is greatly increased; the deformation modules are compounded by rubber and steel wires, so that the damping of the vibration isolator is increased, and the structural strength of the vibration isolator is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of vibration isolators, in particular to a composite damping rubber steel wire rope vibration isolator. Background Art

[0002] With the development of vibration isolator technology, vibration isolators must have excellent vibration isolation, shock isolation and sound insulation triple functions, and be easy to install. In the existing technology, E-type and EA-type vibration isolators are generally used, and some ships use more than 2,000 of them. This type of vibration isolator has poor vibration isolation, sound insulation and shock resistance, and the system natural frequency is around 35Hz. It is still widely used now because of its simple structure and low price. In particular, it is very easy to install, and can be used to install equipment on the bulkhead or structure in a side-mounted manner.

[0003] According to research data, the resonance magnification of the vibration isolator should be less than three, that is, the damping ratio of the vibration isolator is about 0.17. In the prior art, vibration isolators mainly include rubber vibration isolators and wire rope vibration isolators. It is difficult for rubber vibration isolators to achieve the above requirements, especially when conducting resonance tests, heat is rapidly generated and accumulated in the rubber in a short period of time, which will damage the rubber vibration isolator. Wire rope vibration isolators rely on dry friction between steel wires to generate damping. Usually, their resonance magnification is 4 or even higher, and their damping ratio cannot meet the requirements. Another disadvantage of wire rope vibration isolators is that as the compression deformation increases, the stiffness shows a negative stiffness characteristic of decreasing, which is easy to produce a secondary impact of "bottoming out".

[0004] Therefore, a vibration isolator with a resonance amplification factor less than three is needed to meet increasingly stringent usage requirements. Summary of the invention

[0005] In response to the shortcomings of the above-mentioned existing production technology, the present application provides a composite damping rubber wire rope vibration isolator, which combines the viscous damping of the rubber material with the friction damping generated by the mutual friction of the wire rope net, fully utilizing the respective advantages of the two dampings, effectively improving the equivalent damping coefficient, and thus reducing the resonance amplification factor, so that the resonance amplification factor of the vibration isolator is less than three, meeting the use requirements.

[0006] The technical solution adopted by the present invention is as follows: A composite damping rubber wire rope vibration isolator, comprising an upper mounting module, a lower mounting module and a deformation module, wherein the deformation module is arranged between the upper mounting module and the lower mounting module, and the deformation module can generate elastic deformation, so that an elastic connection is formed between the upper mounting module and the lower mounting module; The deformation module includes at least one group of composite rolls, two groups of composite parts and a vulcanized rubber structure. The composite rolls and the composite parts have elastic deformation capabilities and can absorb vibrations through elastic deformation. At least one group of composite rolls is arranged side by side between the upper mounting module and the lower mounting module. The upper end surface of at least one group of composite rolls contacts and supports the middle part of the lower end surface of the upper mounting module, and the lower end surface of at least one group of composite rolls contacts the middle part of the upper end surface of the lower mounting module. The two groups of composite parts are symmetrically arranged on the left and right sides of at least one group of composite rolls. The upper end surfaces of the two groups of composite parts contact and support the left and right sides of the lower end surface of the upper mounting module, and the lower end surfaces of the two groups of composite parts contact the left and right sides of the upper end surface of the lower mounting module. The outer surfaces of the composite rolls and the composite parts are covered with a vulcanized rubber structure. The upper and lower parts of the vulcanized rubber structure are respectively connected to the upper mounting module and the lower mounting module, and the vulcanized rubber structure fills the space between the upper mounting module and the lower mounting module, so that the upper mounting module, the lower mounting module and the deformation module form a whole.

[0007] Furthermore, two through holes are arranged in the longitudinal direction on the deformation module.

[0008] Furthermore, the composite roll is a multi-layer cylindrical structure formed by winding, and the composite roll is a straight rubber-steel rope composite layer structure in an unfolded state, and the rubber-steel rope composite layer structure includes a first rubber layer and a steel rope arranged in the first rubber layer.

[0009] Furthermore, the composite part is a rubber-steel mesh composite layer structure, and the rubber-steel mesh composite layer structure includes a second rubber layer and a multi-layer steel mesh arranged in the second rubber layer.

[0010] Furthermore, the upper mounting module includes an upper base plate, a cylindrical upper mounting column made of steel welded to the center of the lower end surface of the upper base plate, a straight upper mounting plate made of steel welded to the lower end of the upper mounting column, a threaded hole is set in the center of the upper mounting column, and the upper end opening of the threaded hole extends upward to the upper end surface of the upper base plate.

[0011] Furthermore, the lower mounting module includes a lower base plate, a T-shaped lower mounting frame is welded at the center of the upper end surface of the lower base plate, the lower mounting frame is used to position and install the composite roll, and mounting holes are respectively arranged at both ends of the lower base plate, and the mounting holes are used to connect the lower base plate and the mounting base.

[0012] Furthermore, the upper and lower parts of the composite roll are respectively mounted on the upper mounting plate and the lower mounting frame.

[0013] The beneficial effects of the present invention are as follows: The present invention combines the viscous damping of the rubber material with the friction damping generated by the mutual friction of the wire rope net, giving full play to the respective advantages of the two dampings, effectively improving the equivalent damping coefficient, thereby reducing the resonance amplification factor, so that the resonance amplification factor of the vibration isolator is less than three, meeting the use requirements; the deformation module of the present invention adopts a composite of rubber and steel wire, which improves the structural strength of the vibration isolator; the steel wire rope and steel wire net of the composite roll and composite part of the present invention can quickly conduct the heat generated when the vibration isolator is working to the upper mounting module and the lower mounting module and dissipate it, effectively avoiding the heating problem; the rubber layer of the present invention enables the rubber-steel rope composite layer structure to have elastic deformation ability, and the steel wire arranged in the rubber layer The wire rope can improve the tensile strength of the rubber-steel wire rope composite layer structure; the rubber layer of the present invention enables the rubber-steel mesh composite layer structure to have elastic deformation ability, and the multi-layer steel wire mesh arranged in the rubber layer can improve the tensile strength of the rubber-steel mesh composite layer structure; the deformation module of the present invention adopts a composite of rubber and steel wire, which is conducive to isolating the transmission of structural noise. When the sound wave passes through the combination of rubber, steel wire mesh and steel wire rope, it is continuously reflected and turned due to the mismatch of acoustic impedance, thereby increasing the energy of shear loss; the through hole arranged on the deformation module can adjust the overall stiffness of the deformation module, and the through hole can allow the rubber material to deform, thereby preventing the steel wire and rubber from being excessively squeezed and damaged, thereby protecting the rubber body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of the first embodiment of the present invention.

[0015] Figure 2 FIG. 1 is a top view of an embodiment of the present invention.

[0016] Figure 3 It is a cross-sectional view of an embodiment of the present invention.

[0017] Figure 4 This is a front view of the second embodiment of the present invention.

[0018] Figure 5 It is a structural diagram of the composite roll of the present invention.

[0019] Figure 6 It is a structural diagram of the composite part of the present invention.

[0020] Among them: 100, upper mounting module; 101, upper base plate; 102, upper mounting column; 103, upper mounting plate; 104, threaded hole; 200, lower mounting module; 201, lower base plate; 202, lower mounting frame; 203, mounting hole; 300, deformation module; 310, composite roll; 311, first rubber layer; 312, wire rope; 320, composite part; 321, second rubber layer; 322, wire mesh; 330, coated rubber; 400, through hole. DETAILED DESCRIPTION

[0021] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings. Embodiment 1:

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the composite damping rubber wire rope vibration isolator includes an upper mounting module 100, a lower mounting module 200 and a deformation module 300. The deformation module 300 is arranged between the upper mounting module 100 and the lower mounting module 200. The deformation module 300 can produce elastic deformation, so that an elastic connection is formed between the upper mounting module 100 and the lower mounting module 200.

[0023] like Figure 3 As shown, the deformation module 300 includes two groups of composite rolls 310 with cylindrical structures, two groups of composite parts 320 with arc structures and a vulcanized rubber structure 330. The composite rolls 310 and the composite parts 320 have elastic deformation capabilities and can absorb vibrations through elastic deformation. The two groups of composite rolls 310 are arranged side by side between the upper mounting module 100 and the lower mounting module 200. The upper end surfaces of the two groups of composite rolls 310 contact and support the middle part of the lower end surface of the upper mounting module 100, and the lower end surfaces of the two groups of composite rolls 310 contact the middle part of the upper end surface of the lower mounting module 200. The two groups of composite parts 320 are symmetrically arranged on the left and right sides of the two groups of composite rolls 310. The upper end surfaces of the two groups of composite parts 320 contact and support the left and right sides of the lower end surface of the upper mounting module 100, and the lower end surfaces of the two groups of composite parts 320 contact the left and right sides of the upper end surface of the lower mounting module 200. The outer surface of the composite roll 310 and the composite part 320 is covered with a vulcanized rubber structure 330, and the upper and lower parts of the vulcanized rubber structure 330 are respectively connected to the upper mounting module 100 and the lower mounting module 200, and the vulcanized rubber structure 330 fills the space between the upper mounting module 100 and the lower mounting module 200, so that the upper mounting module 100, the lower mounting module 200 and the deformation module 300 form a whole.

[0024] The deformation of both sides of the vibration isolator is the largest when subjected to dynamic loads. Therefore, two composite parts 320 are placed on both sides of the vibration isolator. The composite parts 320 can most effectively increase damping because damping is proportional to the speed of relative deformation. This structure is also conducive to isolating the transmission of structural noise. When sound waves pass through the combination of rubber, steel mesh and steel wire rope, they are constantly reflected and turned due to the mismatch of acoustic impedance, increasing the energy of shear loss. At the same time, since the thermal conductivity of metal is much higher than that of rubber products, the steel wire rope and steel mesh of the composite roll 310 and the composite part 320 can quickly conduct the heat generated when the vibration isolator is working to the upper mounting module 100 and the lower mounting module 200 and dissipate it, effectively avoiding the problem of heating.

[0025] The composite roll 310 may be one group or multiple groups depending on the specific use requirements. The composite roll 310 is a multi-layer cylindrical structure formed by winding. The composite roll 310 is a straight rubber-steel composite layer structure in the unfolded state. Figure 5 As shown, the rubber-steel-rope composite layer structure includes a first rubber layer 311 and a steel wire rope 312 disposed in the first rubber layer 311. The first rubber layer 311 enables the rubber-steel-rope composite layer structure to have elastic deformation capability, while the steel wire rope 312 disposed in the first rubber layer 311 can improve the tensile strength of the rubber-steel-rope composite layer structure. The practice of ship resistance to underwater explosions tells us that the main reason for the damage to the vibration isolator caused by the explosion is the strong tensile stress and large deformation caused by the negative wave. The tensile strength of the steel wire rope can prevent the above damage from occurring. The double-wave impact machine test proves that the above measures are very effective. Winding the rubber-steel-rope composite layer structure to form a multi-layer structure can further improve the elastic deformation capability and tensile strength of the composite roll 310.

[0026] like Figure 6 As shown, the composite part 320 is a rubber-steel mesh composite layer structure, which includes a second rubber layer 321 and a multi-layer steel mesh 322 arranged in the second rubber layer 321. The second rubber layer 321 enables the rubber-steel mesh composite layer structure to have elastic deformation capability, and the multi-layer steel mesh 321 arranged in the second rubber layer 321 can improve the tensile strength of the rubber-steel mesh composite layer structure.

[0027] like Figure 2 and Figure 3 As shown, the upper mounting module 100 includes a straight upper base plate 101 made of steel, the upper end of a cylindrical upper mounting column 102 made of steel is welded to the center of the lower end surface of the upper base plate 101, and a straight upper mounting plate 103 made of steel is welded to the lower end of the upper mounting column 102. A threaded hole 104 is provided at the center of the upper mounting column 102, and the upper end opening of the threaded hole 104 extends upward to the upper end surface of the upper base plate 101. The threaded hole 104 is used for threading the device to be isolated from vibration, and the upper mounting plate 103 is used for positioning and mounting the composite roll 310.

[0028] like Figure 2 and Figure 3 As shown, the lower mounting module 200 includes a straight lower bottom plate 201 made of steel, and a T-shaped lower mounting frame 202 made of steel is welded at the center of the upper end surface of the lower bottom plate 201. The lower mounting frame 202 is used to position and install the composite roll 310. Mounting holes 203 are respectively provided at both ends of the lower bottom plate 201, and the mounting holes 203 are used to connect the lower bottom plate 201 and the mounting base.

[0029] The upper and lower parts of the composite roll 310 are respectively mounted on the upper mounting plate 103 and the lower mounting frame 202 , and the composite roll 310 is positioned and installed by the upper mounting plate 103 and the lower mounting frame 202 .

[0030] Before vulcanization coating, the surfaces of the steel wire ropes of the upper mounting module 100, the lower mounting module 200, the composite roll 310 and the steel wire mesh of the composite part 320 are treated and coated with adhesive, and high bonding strength can be obtained after vulcanization with the rubber, so that the vulcanized rubber structure 330 can be firmly combined with the upper mounting module 100, the lower mounting module 200, the composite roll 310 and the composite part 320 into one.

[0031] The difference between the second embodiment and the first embodiment is that: like Figure 4 As shown, two through holes 400 are arranged in the longitudinal direction of the deformation module 300. The through holes 400 can adjust the overall stiffness of the deformation module 300, and the through holes 400 can allow the rubber material to deform, prevent the steel wire and rubber from being damaged by excessive extrusion, and protect the rubber body. According to different usage requirements, there can be one through hole 400 or multiple through holes 400. The size and shape of the through hole 400 are related to the bearing capacity, installation method (flat or side hanging), stiffness and damping of the vibration isolator.

[0032] After the preparation work is completed, the invention is placed in a mold with a specific structural shape according to the regulations, and the high damping rubber is injected into the cavity of the mold, and the required rubber steel wire vibration isolator is formed after high temperature vulcanization.

[0033] The rubber involved in the present invention adopts a high damping, aging-resistant, high-strength, and oil-resistant formula for use in oil-free or substantially oil-free working environments, or a high damping oil-resistant formula or a radiation-resistant formula for use in oil- or radiation-exposed working environments. The hardness of the rubber can be adjusted to meet various dynamic performance requirements.

[0034] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A composite damping rubber wire rope vibration isolator, comprising an upper mounting module (100), a lower mounting module (200) and a deformation module (300), characterized in that: The deformation module (300) is arranged between the upper mounting module (100) and the lower mounting module (200), and the deformation module (300) is capable of elastic deformation, so that an elastic connection is formed between the upper mounting module (100) and the lower mounting module (200); The deformation module (300) comprises at least one group of composite rolls (310), two groups of composite parts (320) and a vulcanized rubber structure (330); the composite rolls (310) and the composite parts (320) have elastic deformation capabilities and can absorb vibrations through elastic deformation; at least one group of composite rolls (310) is arranged side by side between the upper mounting module (100) and the lower mounting module (200); the upper end surface of at least one group of composite rolls (310) contacts and supports the middle part of the lower end surface of the upper mounting module (100); and the lower end surface of at least one group of composite rolls (310) contacts the middle part of the upper end surface of the lower mounting module (200); the two groups of composite parts (320) are symmetrically arranged on the left and right sides of the at least one group of composite rolls (310); The upper end surfaces of the two groups of composite parts (320) contact and support the left and right sides of the lower end surface of the upper mounting module (100), and the lower end surfaces of the two groups of composite parts (320) contact the left and right sides of the upper end surface of the lower mounting module (200). The outer surfaces of the composite roll (310) and the composite parts (320) are covered with a vulcanized rubber structure (330). The upper and lower parts of the vulcanized rubber structure (330) are respectively connected to the upper mounting module (100) and the lower mounting module (200), and the vulcanized rubber structure (330) fills the space between the upper mounting module (100) and the lower mounting module (200), so that the upper mounting module (100), the lower mounting module (200) and the deformation module (300) form a whole.

2. The composite damping rubber wire rope vibration isolator according to claim 1, characterized in that: Two through holes (400) are arranged in the longitudinal direction on the deformation module (300).

3. The composite damping rubber wire rope vibration isolator according to any one of claims 1 to 2, characterized in that: The composite roll (310) is a multi-layer cylindrical structure formed by winding. The composite roll (310) is a straight rubber-steel cable composite layer structure in an unfolded state. The rubber-steel cable composite layer structure comprises a first rubber layer (311) and a steel cable (312) arranged in the first rubber layer (311).

4. The composite damping rubber wire rope vibration isolator according to claim 3, characterized in that: The composite part (320) is a rubber-steel mesh composite layer structure, and the rubber-steel mesh composite layer structure comprises a second rubber layer (321) and a multi-layer steel mesh (322) arranged in the second rubber layer (321).

5. The composite damping rubber wire rope vibration isolator according to claim 4, characterized in that: The upper mounting module (100) comprises an upper base plate (101), the upper end of a cylindrical upper mounting column (102) made of steel welded to the center of the lower end surface of the upper base plate (101), and a straight upper mounting plate (103) made of steel welded to the lower end of the upper mounting column (102), a threaded hole (104) being arranged at the center of the upper mounting column (102), and the upper end opening of the threaded hole (104) extending upward to the upper end surface of the upper base plate (101).

6. The composite damping rubber wire rope vibration isolator according to claim 5, characterized in that: The lower mounting module (200) comprises a lower base plate (201), a lower mounting frame (202) of a T-shaped structure welded at the center of the upper end surface of the lower base plate (201), the lower mounting frame (202) being used for positioning and mounting the composite roll (310), and mounting holes (203) being respectively provided at both ends of the lower base plate (201), the mounting holes (203) being used for connecting the lower base plate (201) and a mounting base.

7. The composite damping rubber wire rope vibration isolator according to claim 6, characterized in that: The upper and lower parts of the composite roll (310) are respectively mounted on the upper mounting plate (103) and the lower mounting frame (202).

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