Combined vibration isolation device

Abstract

The invention discloses a combined vibration isolation device, belongs to the technical field of vibration isolation of precision equipment, and aims to solve the problem that the vibration isolation effect of the whole support is affected due to single vibration reduction and energy absorption element and failure of the vibration reduction and energy absorption element of the conventional vibration isolation support. Comprising modular units, connecting point bases and side bases, each connecting point base is of a quadrangular frustum pyramid structure, the number of the side bases is two to four, when the number of the side bases is two, the two side bases correspondingly and horizontally extend along inclined planes on any two sides of the connecting point bases, and when the number of the side bases is three, the two side bases correspondingly and horizontally extend along inclined planes on any two sides of the connecting point bases. When the number of the side bases is four, the three side bases horizontally extend along any three side inclined planes of the connecting point base correspondingly, when the number of the side bases is four, the four side bases horizontally extend along the four side inclined planes of the connecting point base correspondingly, and the corresponding inclined planes of the side bases and the connecting point base are connected through modular units to form a linear support, an L-shaped support, a T-shaped support or a cross-shaped support.

Description

Technical Field

[0001] The present invention belongs to the technical field of vibration isolation for precision equipment, and particularly relates to a combined vibration isolation device. Background Art

[0002] With the rapid development of fields such as ultra-precision machining, aerospace, and microelectronics, precision machining platforms have emerged. Precision equipment such as optical instruments, semiconductor manufacturing equipment, and medical imaging equipment is extremely sensitive to vibration. Even minor vibrations may cause a decline in the performance of precision equipment or damage. Environmental vibrations are mainly divided into seismic vibrations and rail transit vibrations. The impact of vibrations on precision equipment is specifically manifested in the following aspects: (1) A decline in equipment accuracy. Vibration can cause small displacements of internal components of the equipment, thus affecting the accuracy of the equipment output results. For example, the optical path in an optical instrument may shift due to vibration, resulting in blurred imaging or deviated data of the equipment; (2) Damage to the equipment structure. Vibrations with larger amplitudes such as seismic vibrations may directly damage the structure of the equipment. For example, sensors may break, optical components may become loose, or electronic chips may fall off; (3) A decline in the service life of the equipment. Mechanical vibration can cause fatigue damage and fracture of equipment parts, thereby shortening the service life of the equipment. For example, vibration can cause premature wear of bearings, accelerate the damage of the equipment, and make the equipment more prone to failure.

[0003] The vibration and shock dual-control technology is an integrated solution for vibration control and earthquake control, aiming to reduce the impact of earthquakes and environmental vibrations on buildings and equipment. In recent years, with the acceleration of the urbanization process and the increase in the number of over-track buildings in subway depots, the vibration and shock dual-control technology has gradually become a research hotspot. The vibration and shock dual-control technology is mainly applied to vibration-sensitive usage scenarios such as over-track buildings in subways, vibration isolation of precision instruments, and theaters. Through the combination of passive vibration isolation technology and active control, the vibration and shock dual-control technology can simultaneously handle seismic vibrations with low frequencies, large energy, and large amplitudes and rail transit vibrations with high frequencies and relatively small amplitudes, achieving wide-band vibration suppression. The vibration and shock dual-control technology can effectively reduce the impact of vibrations on equipment accuracy and service life, meeting the normal operation and usage requirements of precision equipment in complex environments.

[0004] Existing vibration isolation bearings generally only set a group of vibration damping and energy absorption elements. If the vibration damping and energy absorption elements fail, it will have a huge impact on the vibration isolation effect of the entire bearing. In addition, the application scenarios are limited, and the layout of existing vibration isolation bearings has very large limitations for special scenarios. Summary of the Invention

[0005] The purpose of the present invention is to provide a combined vibration isolation device to solve the problem that the existing vibration isolation bearing has a single vibration damping and energy absorption element, and if the vibration damping and energy absorption element fails, it will have a huge impact on the vibration isolation effect of the entire bearing. The technical solution adopted by the present invention is as follows:

[0006] A combined vibration isolation device includes a modular unit, a connection point base, and side bases. The connection point base is in the shape of a frustum of a pyramid. The number of side bases is two to four. When there are two side bases, the two side bases horizontally extend along any two side inclined planes of the connection point base correspondingly. When there are three side bases, the three side bases horizontally extend along any three side inclined planes of the connection point base correspondingly. When there are four side bases, the four side bases horizontally extend along the four side inclined planes of the connection point base correspondingly. The side bases and the corresponding inclined planes of the connection point base are connected by modular units to form a linear support, an L-shaped support, a T-shaped support, or a cross-shaped support.

[0007] Furthermore, the modular unit includes a number of bearing platforms. An intermediate base is provided between any two adjacent bearing platforms. Define the four side inclined planes of the connection point base as the first inclined planes. A second inclined plane is provided on one side of the side base facing the corresponding first inclined plane. The second inclined plane has an opposite slope direction to the corresponding first inclined plane. The bearing platform is wedge-shaped, and the two sides of the bearing platform are third inclined planes that gradually converge from top to bottom. The intermediate base is wedge-shaped, and the two sides of the intermediate base are fourth inclined planes that gradually converge from bottom to top. The lower ends of the side base, the connection point base, and the intermediate base are flush. The lower end of the bearing platform is higher than the lower ends of the side base, the connection point base, and the intermediate base. The first inclined plane and the third inclined plane of the corresponding bearing platform are connected by the damping component. The second inclined plane and the third inclined plane of the corresponding bearing platform are connected by the damping component. The remaining third inclined planes are all correspondingly connected to the adjacent fourth inclined planes by the damping component.

[0008] Furthermore, the two third inclined planes of the bearing platform are symmetrical, and the third inclined plane is parallel to the corresponding first inclined plane, second inclined plane, or fourth inclined plane.

[0009] Furthermore, the damping component includes a number of obliquely arranged rubber plates stacked, and a skeleton steel plate is provided between any two adjacent obliquely arranged rubber plates.

[0010] Furthermore, by changing the thickness and number of layers of the obliquely arranged rubber plates and the skeleton steel plates, the three-directional stiffness of the damping component can be adjusted.

[0011] Furthermore, the corresponding side base and intermediate base are connected to the connection point base by an external connection steel plate, and a gap is provided between the external connection steel plate and the corresponding damping component.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. The damping component of the present invention is provided with a plurality of square inclined rubber plates. Each modular unit is provided with a plurality of such damping components, and multiple modular units are connected in parallel to form inclined supports of various shapes. Compared with a support having a single damping and energy-absorbing element, the redundant design of multiple modular units connected in parallel improves the stability and reliability of the overall system, reduces the risk of the entire system failure caused by the failure of a single damping and energy-absorbing element, and the modular unit has flexibility and scalability, facilitating efficient production and installation, with low maintenance costs, high compatibility and interchangeability. The inclined supports of various shapes are combined for use according to environmental requirements, can bear vibrations and oscillations from any direction, have excellent vibration isolation effects, fast response, and can select different shapes according to different usage scenarios. It is suitable for the control of higher-frequency vibrations. The support can select a suitable shape for layout according to the actual application scenario, can meet the needs of most application scenarios, and the support has good durability and good long-term application effects. This support is mainly used for micro-vibration control and also has a good effect on isolating earthquakes.

[0014] 2. The support of the present invention has good low-frequency vibration isolation performance and variable stiffness, and can be widely applied to the fields of industrial equipment and building vibration isolation. By adjusting the parallel arrangement relationship between modular units, inclined supports of different shapes are made, which are suitable for most application scenarios, and can adapt to different load and frequency requirements by adjusting the thickness change and arrangement relationship between the skeleton steel plates provided between the inclined rubber plates, and is suitable for complex vibration environments. The combined use of inclined supports of various shapes can cover a wider range of vibration frequencies and amplitudes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of an L-shaped support composed of two modular units;

[0016] Figure 2 is Figure 1 the top view of

[0017] Figure 3 is an axonometric view of the L-shaped support with the external connecting steel plates removed;

[0018] Figure 4 is a schematic structural diagram of a T-shaped support composed of three modular units;

[0019] Figure 5 is Figure 4 the top view of

[0020] Figure 6 is an axonometric view of the T-shaped support with the external connecting steel plates removed;

[0021] Figure 7 is a schematic structural diagram of a cross-shaped support composed of four modular units;

[0022] Figure 8 is Figure 7 the top view of;

[0023] Figure 9 is the axonometric view of the cross-shaped support with the external connecting steel plate removed;

[0024] Figure 10 is the structural schematic diagram of the linear support composed of two modular units;

[0025] Figure 11 is Figure 10 the top view of;

[0026] Figure 12 is the axonometric view of the linear support with the external connecting steel plate removed;

[0027] Figure 13 is the layout diagram of the side base, middle base, bearing platform and connection point base.

[0028] In the figure, 1. modular unit, 11. bearing platform, 12. inclined rubber plate, 13. skeleton steel plate, 14. middle base, 15. fourth inclined plane, 16. first inclined plane, 17. second inclined plane, 18. third inclined plane, 2. connection point base, 3. external connecting steel plate, 4. gap, 5. side base. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be described below through specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following descriptions, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0030] The connections mentioned in the present invention are divided into fixed connections and detachable connections. The fixed connections are non-detachable connections including but not limited to conventional fixed connection methods such as hemming connection, rivet connection, bonding connection and welding connection. The detachable connections include but not limited to conventional detachable methods such as bolt connection, snap connection, pin connection and hinge connection. When the specific connection method is not clearly defined, it is default that at least one connection method can be found among the existing connection methods to achieve this function, and those skilled in the art can select it according to their needs. For example: welding connection is selected for fixed connection, and bolt connection is selected for detachable connection.

[0031] The present invention will be further described in detail below with reference to the accompanying drawings. The following embodiments are explanations of the present invention, and the present invention is not limited to the following embodiments.

[0032] Embodiment: As Figures 1 to 13As shown in the figure, a combined vibration isolation device includes a modular unit 1, a connection point base 2, and side bases 5. The connection point base 2 has a frustum of a pyramid structure. The number of side bases 5 is two to four. When there are two side bases 5, the two side bases 5 extend horizontally along any two inclined planes on the sides of the connection point base 2 correspondingly. When there are three side bases 5, the three side bases 5 extend horizontally along any three inclined planes on the sides of the connection point base 2 correspondingly. When there are four side bases 5, the four side bases 5 extend horizontally along the four inclined planes on the sides of the connection point base 2 correspondingly. The side bases 5 and the corresponding inclined planes of the connection point base 2 are connected by the modular unit 1 to form an I-shaped support, an L-shaped support, a T-shaped support, or a cross-shaped support.

[0033] The modular unit 1 includes a number of bearing platforms 11. An intermediate base 14 is provided between any two adjacent bearing platforms 11. Define the four inclined planes on the sides of the connection point base 2 as the first inclined planes 16. A second inclined plane 17 is provided on one side of the side base 5 facing the corresponding first inclined plane 16. The slope direction of the second inclined plane 17 is opposite to that of the corresponding first inclined plane 16. The bearing platform 11 is wedge-shaped. The two sides of the bearing platform 11 are third inclined planes 18 that gradually converge from top to bottom. The two third inclined planes 18 of the bearing platform 11 face the corresponding side base 5 and connection point base 2 respectively. The intermediate base 14 is wedge-shaped. The two sides of the intermediate base 14 are fourth inclined planes 15 that gradually converge from bottom to top. The two fourth inclined planes 15 of the intermediate base 14 face the corresponding side base 5 and connection point base 2 respectively. The lower ends of the side base 5, the connection point base 2, and the intermediate base 14 are flush. The lower end of the bearing platform 11 is higher than the lower ends of the side base 5, the connection point base 2, and the intermediate base 14. The first inclined plane 16 and the third inclined plane 18 of the corresponding bearing platform 11 are connected by the vibration damping component. The second inclined plane 17 and the third inclined plane 18 of the corresponding bearing platform 11 are connected by the vibration damping component. The remaining third inclined planes 18 are all correspondingly connected to the adjacent fourth inclined planes 15 by the vibration damping component.

[0034] The two third inclined planes 18 of the bearing platform 11 are symmetric. The third inclined plane 18 is parallel to the corresponding first inclined plane 16, second inclined plane 17, or fourth inclined plane 15.

[0035] The vibration damping component includes a number of obliquely arranged rubber plates 12 stacked. A skeleton steel plate 13 is provided between any two adjacent obliquely arranged rubber plates 12.

[0036] By changing the thickness and number of layers of the obliquely arranged rubber plates 12 and the skeleton steel plates 13, the three-directional stiffness of the vibration damping component can be adjusted.

[0037] The corresponding side base 5 and the intermediate base 14 are connected to the connection point base 2 by an external connection steel plate 3. A gap 4 is provided between the external connection steel plate 3 and the corresponding vibration damping component.

[0038] As Figure 13, taking the cross-shaped support as an example, the layout positions of the side base 5, the middle base 14, the bearing platform 11 and the connection point base 2 are described, as well as the relationship between the first inclined surface 16, the second inclined surface 17, the third inclined surface 18 and the fourth inclined surface 15. Each modular unit 1 of this embodiment is provided with two bearing platforms 11 and one middle base 14,

[0039] Four first inclined surfaces 16 are provided around the connection point base 2. Along the directions of the four first inclined surfaces 16, the middle base 14 and the side base 5 are horizontally arranged. Both sides of the bearing platform 11 are correspondingly connected to two damping components through the third inclined surface 18. The connection point base 2 and the middle base 14 correspondingly lift two of the damping components on one bearing platform 11 through inclined surfaces. Similarly, the middle base 14 and the side base 5 correspondingly lift two of the damping components on the other bearing platform 11. Finally, the side base 5 and the middle base 14 of each modular unit 1 are bolt-connected through an external connecting steel plate 3, and the external connecting steel plate 3 is also bolt-connected to the connection point base 2 to achieve the fixing effect. The working principle and usage method of the present invention are as follows: Assemble the support in the required shape according to the actual usage scenario, arrange the support under the object to be vibration-isolated, and support the vibration-isolated object through multiple bearing platforms 11. The ground vibration is transmitted to several of the damping components through the side base 5, the middle base 14 and the connection point base 2 for energy-dissipating vibration damping. It has good low-frequency vibration isolation performance, can effectively isolate most conventional vibrations, and the number of modular units 1 can be adjusted according to the required frequency so that the stiffness of the support reaches the optimal control effect.

[0040] The damping component of the present invention is provided with a plurality of square inclined rubber plates 12. Each modular unit is provided with a plurality of the damping components, and a plurality of modular units are connected in parallel to form inclined surface supports of various shapes. Compared with the support with a single damping and energy-absorbing element, the redundant design of connecting a plurality of modular units 1 in parallel improves the stability and reliability of the overall system, reduces the risk of the entire system failure caused by the failure of a single damping and energy-absorbing element, and the modular unit 1 has flexibility and scalability, is convenient for high-efficiency production and installation, has low maintenance costs, and high compatibility and interchangeability. The supports of various shapes are combined and used according to environmental needs, can bear vibrations and oscillations from any direction, have excellent vibration isolation effects, fast response, and can select different shapes according to different usage scenarios. It is suitable for the control of higher-frequency vibrations. The support can select a suitable shape for arrangement according to the actual application scenario, can meet the needs of most application scenarios, and the support has good durability and good long-term application effects. This support is mainly used for micro-vibration control and also has a good effect on isolating earthquakes.

[0041] The bearing of the present invention has good low-frequency vibration isolation performance and variable stiffness, and can be widely applied to the fields of industrial equipment and building vibration isolation. By adjusting the parallel arrangement relationship between the modular units 1, bearings of different shapes can be made, which are suitable for most application scenarios. Moreover, by adjusting the thickness change and arrangement relationship between the skeleton steel plates 13 provided between the inclined rubber plates 12, the requirements of different loads and frequencies can be met, and it is suitable for complex vibration environments. The combined use of bearings of various shapes can cover a wider range of vibration frequencies and amplitudes.

[0042] The above embodiments are only illustrative descriptions of the present invention and do not limit its protection scope. Those skilled in the art can also make partial changes to it, as long as they do not exceed the spiritual essence of the present invention, they are within the protection scope of the present invention.

Claims

1. A combined vibration isolation device, characterized in that: It includes a modular unit (1), a connection point base (2) and side bases (5). The connection point base (2) is in the shape of a frustum of a pyramid. The number of side bases (5) is two to four. When there are two side bases (5), the two side bases (5) horizontally extend along any two side inclined planes of the connection point base (2) correspondingly. When there are three side bases (5), the three side bases (5) horizontally extend along any three side inclined planes of the connection point base (2) correspondingly. When there are four side bases (5), the four side bases (5) horizontally extend along the four side inclined planes of the connection point base (2) correspondingly. The side bases (5) and the corresponding inclined planes of the connection point base (2) are all connected by the modular unit (1) to form a linear support, an L-shaped support, a T-shaped support or a cross-shaped support.

2. The combined vibration isolation device according to claim 1, wherein: The modular unit (1) includes a number of bearing platforms (11). An intermediate base (14) is provided between any two adjacent bearing platforms (11). Define the four side inclined planes of the connection point base (2) as the first inclined planes (16). A second inclined plane (17) is provided on one side of the side base (5) facing the corresponding first inclined plane (16). The slope direction of the second inclined plane (17) is opposite to that of the corresponding first inclined plane (16). The bearing platform (11) is wedge-shaped. The two sides of the bearing platform (11) are third inclined planes (18) that gradually converge from top to bottom. The intermediate base (14) is wedge-shaped. The two sides of the intermediate base (14) are fourth inclined planes (15) that gradually converge from bottom to top. The lower ends of the side base (5), the connection point base (2) and the intermediate base (14) are flush. The lower end of the bearing platform (11) is higher than the lower ends of the side base (5), the connection point base (2) and the intermediate base (14). The first inclined plane (16) and the third inclined plane (18) of the corresponding bearing platform (11) are connected by the damping assembly. The second inclined plane (17) and the third inclined plane (18) of the corresponding bearing platform (11) are connected by the damping assembly. The remaining third inclined planes (18) are all correspondingly connected to the adjacent fourth inclined planes (15) by the damping assembly.

3. The combined vibration isolation device according to claim 2, wherein: The two third inclined planes (18) of the bearing platform (11) are symmetrical. The third inclined plane (18) is parallel to the corresponding first inclined plane (16), second inclined plane (17) or fourth inclined plane (15).

4. The combined vibration isolation device according to claim 2, wherein: The damping assembly includes a number of obliquely arranged rubber plates (12) stacked. A skeleton steel plate (13) is provided between any two adjacent obliquely arranged rubber plates (12).

5. The combined vibration isolation device according to claim 4, wherein: By changing the thickness and number of layers of the obliquely arranged rubber plates (12) and the skeleton steel plates (13), the three-directional stiffness of the damping assembly can be adjusted.

6. A combined vibration isolation device according to claims 2-5, characterized in that: The corresponding side base (5) and intermediate base (14) are connected to the connection point base (2) by an external connection steel plate (3). A gap (4) is provided between the external connection steel plate (3) and the corresponding damping assembly.

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