Low-frequency transverse rubber vibration reduction support structure

Abstract

The invention provides a low-frequency transverse rubber vibration reduction support structure which comprises a ring beam connecting structure and a vibration reduction support, the ring beam connecting structure is arranged on the upper portion of the vibration reduction support, and the ring beam connecting structure is connected with a structure needing vibration reduction. The vibration reduction support sequentially comprises a limiting center rod, an inner side metal piece, a vibration reduction elastic layer, an outer side metal piece and a base from the inner side to the outer side. A bottom flange plate is arranged at the bottom of the outer side metal piece; a preset distance is kept between the limiting center rod and the bottom end of the base; the base and the ring beam connecting structure are positioned through pre-installation. The outer side metal piece is filled with the rubber material, so that the vibration reduction support has certain vibration reduction capacity, the vibration reduction performance of a low-frequency band is further improved, a plurality of rubber layers with stepped hardness are arranged on a traditional vibration isolation support structure to achieve broadband vibration reduction, the vibration reduction performance and the vibration reduction frequency band are adjusted by adjusting the hardness and the thickness of the rubber layers, and the vibration reduction performance and the vibration reduction frequency band are adjusted by adjusting the hardness and the thickness of the rubber layers. And finally, the broadband low-frequency vibration reduction structure convenient to mount, dismount and replace is formed.

Description

Technical Field

[0001] The invention relates to the technical field of vibration reduction in construction engineering, in particular to a low-frequency lateral rubber vibration reduction support structure. Background Art

[0002] Vibration is a common physical phenomenon in people's work and life. With the development of science and technology and the progress of society, people's requirements for the accuracy, efficiency, power, speed and other aspects of mechanical equipment are gradually increasing, and the requirements for the comfort of life and the quality of the working environment are also getting higher and higher. Therefore, in the increasingly developing modern engineering technology, the field of vibration research has also attracted much attention. The hazards caused by vibration are mainly the following:

[0003] 1) Affect the working performance and service life of mechanical equipment itself. Vibration affects the processing accuracy and efficiency of machine tools; affects the working accuracy and life of computer external devices such as hard disk drives; and limits the improvement of the speed and life of aircraft, vehicles, etc.

[0004] 2) Affecting the working performance of other equipment. The vibrations generated by some large vehicles, power equipment, and mechanical equipment can affect the working accuracy of some precision analysis, measurement, and processing machinery or electronic equipment through transmission, and in serious cases can even cause them to malfunction. For example, a running tank will reduce the aiming accuracy of its artillery.

[0005] 3) Destruction of structural strength. Severe vibration, especially in a resonant state or the vibration of certain vibrating machines, often destroys the strength of the structure and causes damage to the mechanical structure, especially the different forms of connections of various equipment, components or parts (such as the connection flanges of brackets, machine feet, bases, etc., the breakage of connecting bolts, cracks in welds, etc.)

[0006] 4) Causes structural sound and secondary pollution of noise. The surface vibration of mechanical equipment causes noise, which destroys the working environment of operators and affects people's work quality and health.

[0007] 5) Impact on comfort. For vehicles, such as vehicles, ships, and airplanes, the factors that affect passenger comfort are mainly vibration and the resulting noise.

[0008] 6) Deterioration of the working environment. Operators working in strong vibration environments will suffer varying degrees of physical and mental damage. For example, working in a forging or punching and shearing workshop or in an environment equipped with large power machinery, the strong vibration will not only cause mental damage such as fatigue and decreased concentration, but also cause physiological diseases in the cardiopulmonary system, bone structure, etc.

[0009] The vibration damping dampers commonly used in building vibration reduction are to design a resonant mass damper at the top of the vibrating object, and reduce the vibration of the building itself through the vibration of the resonant mass damper, so as to achieve the safety of the building structure. By increasing the damper limit to control vibration and displacement, but generally there is an optimal value for structural damping, and too large or too small damping may increase the vibration.

[0010] For a single reactor body with a height of about 10 - 20 meters and a diameter of about 3 - 10 meters, during the daily production process, it is prone to large vibrations and swings, bringing great potential safety hazards in production. It is urgent to solve the problem of excessive vibration and swing of the reactor body. By on-site inspection of the sway of the reactor body: the vertical displacement of the reactor body is small, mainly swaying in the horizontal direction, the vibration amplitude in the horizontal direction is large, and there are also random and irregular amplified vibrations, especially within 1 - 6 Hz.

[0011] However, at present, most vibration damping bearings are for vertical vibration. For low-frequency lateral vibration, it is mostly achieved by adjusting the material size to cover the target frequency band, but rubber has poor durability in harsh environments and is not suitable for long-term use. And traditional vibration damping bearings have problems such as easy aging of the rubber layer, poor frequency band adaptability, and insufficient installation accuracy. Especially in the low-frequency vibration scenario, it is difficult to balance the bearing capacity and vibration damping performance. Summary of the Invention

[0012] In view of this, the present invention aims to provide a low-frequency lateral rubber vibration damping bearing structure to solve the problems in the prior art that the vibration damping bearing structure only targets vertical vibration, has insufficient low-frequency vibration damping performance, and is difficult to regulate the effective frequency band.

[0013] To achieve the above object, the technical solution of the present invention is realized as follows:

[0014] A low-frequency lateral rubber vibration damping bearing structure includes a ring beam connection structure and a vibration damping bearing. The ring beam connection structure is arranged on the upper part of the vibration damping bearing, and the ring beam connection structure is connected to the structure to be vibration-damped. The vibration damping bearing sequentially includes a limit center rod, an inner metal part, a vibration damping elastic layer, an outer metal part, and a base from the inside to the outside; a bottom flange is provided at the bottom of the outer metal part; a preset distance is maintained between the limit center rod and the bottom end of the base; the base and the ring beam connection structure are pre-installed and positioned, and a second plate is provided at the top of the limit center rod.

[0015] Further, the vibration damping elastic layer is at least one layer.

[0016] Further, the vibration damping elastic layer is arranged as a multi-layer stepped hardness rubber layer.

[0017] Further, notches with a groove-like structure are provided at both the top and the bottom of the vibration damping elastic layer.

[0018] Further, the notch shape of the damping elastic layer is one of semi-circular, rectangular, triangular or square.

[0019] Further, the distance between the limiting central rod and the bottom end of the base is set to at least 10 mm.

[0020] Further, the ring beam connection structure includes a bottom plate and side connection plates. The bottom plate is arranged on the top of the damping support and is parallel to the base, and the side connection plates are arranged at the edge of the bottom plate and extend vertically upward from the bottom plate.

[0021] Further, the layout of the bolt connection holes on the flange is one of circular distribution, radial distribution or square distribution.

[0022] Further, the limiting central rod is set as a hollow structure.

[0023] Further, bolt connection holes are provided on the bottom flange. Compared with the prior art, the low-frequency lateral rubber damping support structure of the present invention has the following advantages:

[0024] In the present invention, the outer metal part is filled with rubber material, so that the damping support has a certain damping capacity, further improving the damping performance in the low-frequency band. On the traditional vibration isolation support structure, multiple layers of stepped hardness rubber layers are provided to achieve broadband damping. The damping performance and damping frequency band are adjusted by adjusting the hardness and thickness of the rubber layer, and finally a low-frequency damping structure with broadband and convenient installation, disassembly and replacement is formed; in addition, through the design of an additional protective cover, relatively harsh application environments can also be dealt with. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the axonometric view of the low-frequency lateral rubber damping support structure described in the embodiment of the present invention;

[0026] Figure 2 is the front view of the low-frequency lateral rubber damping support structure described in the embodiment of the present invention;

[0027] Figure 3 is the schematic diagram of the low-frequency lateral rubber damping support described in the embodiment of the present invention;

[0028] Figure 4 is the front view of the damping support described in the embodiment of the present invention;

[0029] Figure 4a is Figure 4 the sectional view taken along line A-A in

[0030] Figure 5 is the schematic diagram of the connection between the damping support and the furnace body described in the embodiment of the present invention;

[0031] Figure 6 is the schematic diagram of the connection between the ring beam connection structure and the furnace body described in the embodiment of the present invention.

[0032] Description of the reference numerals:

[0033] 1 - Limit center rod, 2 - Ring beam connection structure, 21 - Bottom plate, 22 - Side connection plate, 23 - Second plate, 3 - Inner metal part, 4 - Vibration damping elastic layer, 41 - Notch, 5 - Outer metal part, 51 - Bottom flange, 6 - Base, 7 - Furnace body Specific embodiments

[0034] To make the above - mentioned objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given with reference to the accompanying drawings.

[0035] As Figures 1 - 5 shown, a low - frequency horizontal rubber vibration damping bearing structure includes a ring beam connection structure 2 and a vibration damping bearing. Among them, the ring beam connection structure 2 is arranged on the upper part of the vibration damping bearing, and the ring beam connection structure 2 is connected to the structure to be vibration - damped, such as a furnace body or other building equipment, etc. The vibration damping bearing sequentially includes a limit center rod 1, an inner metal part 3, a vibration damping elastic layer 4 and an outer metal part 5 from the inside to the outside. The limit center rod 1 is arranged at the center position of the vibration damping bearing, and the limit center rod 1 is arranged as a hollow structure. The inner metal part 3 is wrapped on the axial outside of the limit center rod 1. The vibration damping elastic layer 4 is arranged between the inner metal part 3 and the outer metal part 5. The thickness and hardness of the vibration damping elastic layer 4 are adjustable, and the vibration damping elastic layer 4 is arranged as at least one layer. Preferably, when the vibration damping elastic layer is arranged as a multi - layer structure, the multi - layer vibration damping elastic layers can be arranged with stepped hardness. Rubber layers with different hardnesses have different natural frequencies, and thus the hardness distribution of the vibration damping elastic layer can be adjusted according to the actual working conditions. Through the stepped hardness distribution, the vibration damping layer can effectively absorb vibration energy in a wider frequency range (such as low - frequency, medium - frequency, high - frequency), avoiding the limitation that a single - hardness material is only effective for a specific frequency band.

[0036] The inner metal part 3, the outer metal part 5 and the vibration damping elastic layer 4 can be integrally formed by vulcanization bonding. By adjusting the hardness and thickness of the rubber layer, the vibration damping performance and vibration damping frequency band are adjusted, so as to form a low - frequency vibration damping structure with wide frequency band and convenient for installation, disassembly and replacement.

[0037] The vibration damping bearing further includes a base 6. The base 6 is arranged at the lowermost part, and at least the lower part of the outer metal part 5 is connected to the base 6. A gap is left between the bottom of the base 6 and the bottom of the limit center rod 1 to avoid interference. The distance of the gap is set to be at least 10 mm.

[0038] Furthermore, a bottom flange 51 with bolt connection holes is provided at the bottom of the outer metal part 5. The outer metal part 5 is fixedly connected to the base 6 through the bottom flange 51. Preferably, the outer metal part 5 and the bottom flange 51 are integrally provided. Bolt connection holes are provided on the bottom flange 51, and bolt connectors are used to pass through the bolt connection holes to integrally and fixedly connect the outer metal part to the base 6. Chamfers are provided at the edges of the bolt connection holes to facilitate the installation of screws. The bolt connection holes of the flange are arranged in a circular distribution, a radial distribution, or a square distribution.

[0039] Notches 41 in a groove-like structure are provided at both the top and bottom of the damping elastic layer to prevent the damping function of the rubber layer from failing due to excessive stress concentration at the edges of the rubber layer. The shape of the notches 41 can be adjusted as needed. Preferably, the notches 41 are provided in the middle of the top and bottom of the damping elastic layer 4, that is, the inner diameter edges and outer diameter edges at the top and bottom of the damping elastic layer are higher than those between the inner diameter and the outer diameter. Among them, the notches 41 can be set as one of a semi-circular groove, a square groove, a rectangular groove, and a triangular groove.

[0040] The ring beam connection structure 2 includes a bottom plate 21 and side connection plates 22. The bottom plate 21 is provided on the top of the damping support and the bottom plate 21 is parallel to the base 6. Through holes are provided on the bottom plate 21, and the limit center rod 1 passes through the bottom plate 21 and extends upward. A second plate 23 is further provided on the top of the limit center rod 1, and the second plate 23 covers the top of the limit center rod 1 and the bottom plate 21. Preferably, bolt connection holes are provided on the second plate 23, and bolts are used to pass through the bolt connection holes to fix the second plate 23 on the bottom plate 21. Chamfers are provided at the edges of the bolt connection holes to facilitate the installation of screws. Furthermore, the second plate 23 can be integrally formed with the limit center rod 1. When disassembling and replacing the limit center rod 1, the limit center rod is taken out through the second plate 23, which is convenient for disassembly and replacement.

[0041] The side connection plates 22 are provided at the edges of the bottom plate 21 and extend vertically upward from the bottom plate 21. When connecting and fixing the damping support to the furnace body, the side connection plates 22 and the bottom plate 21 are both welded to the furnace body.

[0042] As one of the embodiments of the present invention, the ring beam connection structure 2 can also be integrally provided with the furnace body 7. When it is necessary to install the damping support, the ring beam connection structure 2 is connected to the damping support. The ring beam connection structure and the base need to be pre-installed.

[0043] As one of the embodiments of the present invention, since the rubber material is easily affected by the external environment, a protective cover can be added on the outer layer.

[0044] Embodiment 1

[0045] A low-frequency lateral rubber vibration isolation bearing structure includes a ring beam connection structure 2 and a vibration isolation bearing. The ring beam connection structure 2 is arranged on the upper part of the vibration isolation bearing, and the ring beam connection structure 2 is connected to the furnace body. The vibration isolation bearing sequentially includes a limit center rod, an inner iron part, a vibration isolation rubber layer, an outer iron part, and a base from the inside to the outside. The distance between the limit center rod 1 and the bottom end of the base is 12 mm. The two sides of the vibration isolation rubber layer are processed with R corners and are vulcanized and bonded to the inner iron part and the outer iron part to form an integral body. The bottom of the outer iron part is provided with a flange plate with bolt connection holes, and the edges of the bolt holes are chamfered. The vibration isolation rubber layer is single-layer, and its notch shape is semi-circular. The base and the ring beam connection structure need to be pre-installed and positioned, and an anti-corrosion protective cover is added to the outer layer to improve environmental adaptability.

[0046] Example 2

[0047] A low-frequency lateral rubber vibration isolation bearing structure includes a ring beam connection structure 2 and a vibration isolation bearing. The ring beam connection structure 2 is arranged on the upper part of the vibration isolation bearing, and the ring beam connection structure 2 is connected to the furnace body. The vibration isolation bearing sequentially includes a limit center rod, an inner iron part, a double-layer vibration isolation rubber layer, an outer iron part, and a base from the inside to the outside. The distance between the limit center rod and the base is 15 mm. The double-layer rubber layer is combined with the inner and outer iron parts through a vulcanization process. The notch of the rubber layer is rectangular, and the two sides are chamfered with R corners. The bottom flange plate of the outer iron part uses annularly distributed bolt holes, and the orifices are chamfered. An outer protective cover is added. The base and the ring beam connection structure ensure the alignment accuracy through pre-installation.

[0048] Example 3

[0049] A low-frequency lateral rubber vibration isolation bearing structure consists of a ring beam connection structure and a vibration isolation bearing. The ring beam connection structure 2 is arranged on the upper part of the vibration isolation bearing, and the ring beam connection structure 2 is connected to the furnace body. The vibration isolation bearing sequentially includes a limit center rod, an inner iron part, a triple-layer vibration isolation rubber layer, an outer iron part, and a base from the inside to the outside. The distance between the limit center rod and the base is 10 mm. The notch of the rubber layer is triangular, and the two sides are chamfered with R corners and are vulcanized and bonded between the inner and outer iron parts. The bottom flange plate of the outer iron part is provided with radially distributed bolt holes, and the orifice is chamfered. The hardness of the rubber layer is a single 65 Shore A. After pre-installation, the base and the ring beam connection structure are welded and fixed. No protective cover is provided on the outer layer, which is suitable for indoor environments.

[0050] Example 4

[0051] A low-frequency lateral rubber vibration damping bearing structure includes a ring beam connection structure and a vibration damping bearing. The ring beam connection structure 2 is arranged on the upper part of the vibration damping bearing and is connected to the structure to be vibration-damped, such as a furnace body or other building equipment, etc. The vibration damping bearing sequentially includes a limit center rod, an inner iron part, a vibration damping rubber layer, an outer iron part and a base from the inside to the outside. The distance between the limit center rod and the base is 20 mm. The vibration damping rubber layer is a single layer, with a square notch and R-chamfers on both sides, and is vulcanized and integrally formed with the iron parts. The bottom flange of the outer iron part adopts a square bolt hole layout with chamfered hole openings. The hardness of the rubber layer is designed with multiple gradients. The base and the ring beam connection structure are positioned by a pre-installed fixture, and an additional weather-resistant protective cover is added on the outer layer to cope with extreme environments.

[0052] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

1. A low-frequency lateral rubber vibration isolation bearing structure, characterized in that, It includes a ring beam connection structure (2) and a vibration damping support. The ring beam connection structure (2) is arranged on the upper part of the vibration damping support. The ring beam connection structure (2) is connected to the structure to be vibration-damped. The vibration damping support sequentially includes a limit center rod (1), an inner metal part (3), a vibration damping elastic layer (4), an outer metal part (5), and a base (6) from the inside to the outside. A bottom flange (51) is provided at the bottom of the outer metal part (5). A preset distance is maintained between the limit center rod (1) and the bottom end of the base (6). The base (6) and the ring beam connection structure (2) are pre-installed and positioned, and a second plate (23) is provided at the top of the limit center rod (1).

2. The low-frequency lateral rubber vibration isolation bearing structure according to claim 1, wherein The vibration damping elastic layer (4) is at least one layer.

3. The low-frequency lateral rubber vibration isolation bearing structure according to claim 1, characterized in that, The vibration damping elastic layer (4) is arranged as a multi-layer stepped hardness rubber layer.

4. The low-frequency lateral rubber vibration isolation bearing structure according to claim 1, characterized in that, Notches (41) in a groove-like structure are provided at both the top and the bottom of the vibration damping elastic layer (4).

5. The low-frequency lateral rubber vibration isolation bearing structure according to claim 1, characterized in that, The shape of the notch (41) of the vibration damping elastic layer (4) is one of a semicircle, a rectangle, a triangle, or a square.

6. The low-frequency lateral rubber vibration isolation bearing structure according to claim 1, wherein The distance between the limit center rod (1) and the bottom end of the base (6) is set to be at least 10 mm.

7. The low-frequency lateral rubber vibration isolation bearing structure according to claim 1, characterized in that, The ring beam connection structure (2) includes a bottom plate (21) and side connection plates (22). The bottom plate (21) is arranged on the top of the vibration damping support and the bottom plate (21) is parallel to the base (6). The side connection plates (22) are arranged at the edge of the bottom plate (21) and extend vertically upward from the bottom plate (21).

8. The low-frequency lateral rubber vibration isolation bearing structure according to claim 1, characterized in that, The limit center rod (1) is arranged as a hollow structure.

9. The low-frequency lateral rubber vibration isolation bearing structure according to claim 1, characterized in that, Bolt connection holes are provided on the bottom flange (51).

10. The low-frequency lateral rubber vibration isolation bearing structure according to claim 1, characterized in that, The layout of the bolt connection holes on the bottom flange (51) is one of a circular distribution, a radial distribution, or a square distribution.

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