Vibration reduction assembly with adjustable three-direction rigidity and vibration isolation support

Abstract

The invention discloses a vibration reduction assembly with adjustable three-direction rigidity and a vibration isolation support, belongs to the technical field of vibration isolation of precision equipment, and aims to solve the problem that the existing vibration isolation measures are difficult to ensure the earthquake safety while the vibration isolation effect is realized. Comprising a vibration reduction assembly, the two sides of the bearing table are correspondingly connected with the two bases through the vibration reduction assembly, the vibration reduction assembly comprises a plurality of arc-shaped rubber plates which are arranged in a stacked mode, an arc-shaped framework steel plate is arranged between any two adjacent arc-shaped rubber plates, and the front side edge and the rear side edge of each arc-shaped framework steel plate are bent towards the bearing table. Gaps are formed between the bearing table and the external connecting steel plate and between the damping assembly and the external connecting steel plate. The arc-shaped framework steel plates are curved steel plates which are arranged in an inclined mode, good lateral rigidity is achieved, the lateral displacement resistance is improved, and therefore the vibration isolation device is more stable while the excellent vibration isolation effect can be guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of equipment vibration isolation, and particularly relates to a vibration damping component and a vibration isolation support with adjustable three-directional stiffness. 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 a tiny vibration 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 impacts of vibrations on precision equipment are specifically manifested in the following aspects: (1) causing a decline in equipment accuracy. Vibration will 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 of the equipment or biased data; (2) causing 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) leading to a decline in the service life of the equipment. Mechanical vibration will cause fatigue damage and fracture of equipment parts, thereby shortening the service life of the equipment.

[0003] Existing vibration isolation supports cannot balance the anti-lateral displacement ability while ensuring the vibration isolation effect. The lateral stiffness of existing vibration isolation supports is small, and the shear resistance needs to be strengthened. In addition, the vibration isolation effect of existing vibration isolation supports is not significant, and they do not cover a wide range of vibration frequencies and amplitudes. Summary of the Invention

[0004] The purpose of the present invention is to provide a vibration damping component and a vibration isolation support with adjustable three-directional stiffness to solve the problem that existing vibration isolation measures are difficult to achieve the vibration isolation effect. The technical solutions adopted by the present invention are as follows:

[0005] A vibration damping component with adjustable three-directional stiffness, the vibration damping component includes several arc-shaped vibration damping plates stacked on top of each other. An arc-shaped skeleton plate is provided between any two adjacent arc-shaped vibration damping plates. The axis of the arc-shaped skeleton plate is inclined up and down. By changing the bending curvature, thickness, and number of layers of several arc-shaped vibration damping plates and arc-shaped skeleton plates, the three-directional stiffness of the vibration damping component can be adjusted.

[0006] Further, the arc-shaped skeleton plate is a steel member.

[0007] Further, the arc-shaped vibration damping plate is a rubber member.

[0008] Further, the vibration damping assembly further includes a first complementary plate and a second complementary plate. One end face of the first complementary plate is a convex arc surface, and the other end face is a flat surface. One end face of the second complementary plate is a concave arc surface, and the other end face is a flat surface. The convex arc surface of the first complementary plate and the concave arc surface of the second complementary plate are respectively and adaptively connected to the outermost two arc surfaces of a plurality of arc-shaped vibration damping plates.

[0009] Further, both the first complementary plate and the second complementary plate are steel members.

[0010] Further, the first complementary plate, a plurality of arc-shaped skeleton plates and the second complementary plate are vulcanized and connected through a plurality of arc-shaped vibration damping plates.

[0011] The present invention also provides an anti-vibration bearing, which includes a bearing platform, a base and the above-mentioned vibration damping assembly. The two bases are arranged left and right, the bearing platform is located between the two bases, the lower end of the bearing platform is higher than the lower end of the base, the bearing platform is wedge-shaped, the left and right sides of the bearing platform are first inclined surfaces that gradually converge from top to bottom, and one side of the base facing the bearing platform is provided with a second inclined surface. The second inclined surface is parallel to the adjacent first inclined surface, and the second inclined surface and the adjacent first inclined surface are connected through the vibration damping assembly.

[0012] Further, the two bases are connected through an external connecting steel plate, and there are gaps between the bearing platform and the vibration damping assembly and the external connecting steel plate.

[0013] Further, the flat surface of the first complementary plate is connected to the first inclined surface on the same side, the flat surface of the second complementary plate is connected to the second inclined surface on the same side, and the front and rear sides of the arc-shaped skeleton plate are bent towards the bearing platform.

[0014] Further, the bearing platform is located in the center of the two bases, the two first inclined surfaces are symmetric left and right, and the two second inclined surfaces are symmetric left and right.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The bearing of the present invention is a bearing for vibration isolation, aiming to solve the problem that it is difficult to achieve the vibration isolation effect with existing vibration isolation measures. The bearing platform is connected through a plurality of stacked arc-shaped vibration damping plates, and finally supported by the base, and the two bases are connected through an external connecting steel plate to achieve a fixing effect. The arc-shaped vibration damping plate is an inclined curved steel plate, which has good lateral stiffness and improves the anti-lateral displacement ability, making the present invention more stable while ensuring excellent vibration isolation effect. The present invention has the characteristics of excellent vibration isolation effect, fast response, large lateral stiffness, strong shear resistance, etc., is suitable for controlling vibrations with higher frequencies, can meet the requirements of most application scenarios, and has good durability and is suitable for long-term applications. Description of the Drawings

[0017] Figure 1It is a schematic structural diagram of the vibration damping component of the present invention;

[0018] Figure 2 It is an axonometric drawing of the vibration isolation bearing of the present invention;

[0019] Figure 3 It is a top view of the vibration isolation bearing of the present invention;

[0020] Figure 4 It is a front view of the vibration isolation bearing with the external connecting steel plate removed according to the present invention;

[0021] Figure 5 It is a layout diagram of the positions of the bearing platform and the base.

[0022] In the figure, 1. Bearing platform, 11. First inclined surface, 2. Vibration damping component, 21. First complementary plate, 22. Arc-shaped skeleton plate, 23. Arc-shaped vibration damping plate, 24. Second complementary plate, 3. Base, 31. Second inclined surface, 4. External connecting steel plate, 5. Gap. Detailed implementation manners

[0023] 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 description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0024] 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 connections, rivet connections, bonding connections and welding connections. The detachable connections include but not limited to conventional disassembly methods such as bolt connections, snap connections, pin connections and hinge connections. 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 according to their needs. For example: welding connection is selected for fixed connection, and bolt connection is selected for detachable connection.

[0025] 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.

[0026] Embodiment 1: As Figure 1As shown in the figure, a shock absorption component with adjustable three-way stiffness, the shock absorption component 2 includes a plurality of arc-shaped shock absorption plates 23 stacked, and an arc-shaped skeleton plate 22 is provided between any two adjacent arc-shaped shock absorption plates 23. After the arc-shaped shock absorption plate 23 and the arc-shaped skeleton plate 22 are flattened, they are both rectangular plates. The arc-shaped skeleton plate 22 is adaptively attached to the end face of the adjacent arc-shaped shock absorption plate 23, and the outer contours are aligned. The axis of the arc-shaped skeleton plate 22 is inclined up and down. By changing the bending radian, thickness and number of layers of the plurality of arc-shaped shock absorption plates 23 and the arc-shaped skeleton plates 22, the three-way stiffness of the shock absorption component 2 can be adjusted.

[0027] The arc-shaped skeleton plate 22 is a steel member.

[0028] The arc-shaped shock absorption plate 23 is a rubber member.

[0029] The shock absorption component 2 further includes a first complementary plate 21 and a second complementary plate 24. One end face of the first complementary plate 21 is a convex arc surface and the other end face is a flat surface. One end face of the second complementary plate 24 is a concave arc surface and the other end face is a flat surface. The convex arc surface of the first complementary plate 21 and the concave arc surface of the second complementary plate 24 are respectively adaptively connected to the outermost two arc surfaces of the plurality of arc-shaped shock absorption plates 23.

[0030] Both the first complementary plate 21 and the second complementary plate 24 are steel members.

[0031] The first complementary plate 21, the plurality of arc-shaped skeleton plates 22 and the second complementary plate 24 are vulcanized and connected through the plurality of arc-shaped shock absorption plates 23.

[0032] Since the axis of the arc-shaped skeleton plate 22 is inclined, the two sides of the arc-shaped skeleton plate 22 are bent around its axis. Therefore, the arc-shaped skeleton plate 22 can bear loads in three directions: vertical, horizontal and lateral. The plurality of arc-shaped shock absorption plates 23 can deform and absorb energy in three directions: vertical, horizontal and lateral. As needed, replace the arc-shaped shock absorption plates 23 and the arc-shaped skeleton plates 22 with different bending radians and thicknesses, and set the number of layers of the arc-shaped shock absorption plates 23 and the arc-shaped skeleton plates 22 as needed, then the stiffness of the shock absorption component 2 in three directions can be adjusted.

[0033] Embodiment 2: As Figures 1 to 5 As shown in the figure, a vibration isolation bearing includes a bearing platform 1, a base 3 and the shock absorption component 2 as described in Embodiment 1. The two bases 3 are arranged left and right. The bearing platform 1 is located between the two bases 3. The lower end of the bearing platform 1 is higher than the lower end of the base 3. The bearing platform 1 is wedge-shaped. The left and right sides of the bearing platform 1 are first inclined surfaces 11 that gradually converge from top to bottom. One side of the base 3 facing the bearing platform 1 is provided with a second inclined surface 31. The second inclined surface 31 is parallel to the adjacent first inclined surface 11. The second inclined surface 31 and the adjacent first inclined surface 11 are connected through the shock absorption component 2.

[0034] The two bases 3 are connected by an external connecting steel plate 4, and there is a gap 5 between the bearing platform 1 and the vibration damping assembly 2 and the external connecting steel plate 4.

[0035] The plane of the first complementary plate 21 is connected to the first inclined surface 11 on the same side, the plane of the second complementary plate 24 is connected to the second inclined surface 31 on the same side, and both the front and rear sides of the arc-shaped skeleton plate 22 are bent towards the bearing platform 1.

[0036] The bearing platform 1 is located at the center of the two bases 3, the two first inclined surfaces 11 are symmetric left and right, and the two second inclined surfaces 31 are symmetric left and right.

[0037] The vibration isolation bearing of the present invention is a bearing for vibration and shock dual control, aiming to solve the problem that existing vibration isolation measures are difficult to ensure seismic safety while achieving vibration isolation effects. The bearing platform 1 is connected to the base 3 through a plurality of stacked arc-shaped damping plates 23 and arc-shaped skeleton plates 22, and the two bases 3 are connected by an external connecting steel plate 4 to achieve a fixing effect. The arc-shaped skeleton plate 22 is an inclined curved steel plate with good lateral stiffness, which improves the lateral displacement resistance ability, making the present invention more stable while ensuring excellent vibration isolation effects.

[0038] The working principle and usage method of the vibration isolation bearing of the present invention are as follows: Arrange a plurality of the said bearings under the object to be vibration isolated, support the object to be vibration isolated through the bearing platform 1, and the ground vibration is transmitted to the vibration damping assembly 2 through the base 3 for energy dissipation and vibration damping to reduce or avoid the vibration of the object to be vibration isolated. The present invention has good low-frequency vibration isolation performance and can effectively isolate most conventional vibrations. The stiffness of the arc-shaped damping plate 23 can be adjusted according to the required frequency to achieve the optimal control effect.

[0039] The present invention has the characteristics of excellent vibration isolation effect, fast response, large lateral stiffness, strong shear resistance, etc., is suitable for the control of vibrations with higher frequencies, can meet the requirements of most application scenarios, and has good durability and is suitable for long-term applications. It is especially suitable for micro-vibration isolation in the fields of optical instruments, semiconductor manufacturing equipment, aerospace equipment, etc.

[0040] 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 shock absorption component with three-way adjustable stiffness, characterized in that: The damping component (2) includes a plurality of arc-shaped damping plates (23) stacked on top of each other. An arc-shaped skeleton plate (22) is provided between any two adjacent arc-shaped damping plates (23). The axis of the arc-shaped skeleton plate (22) is inclined up and down. By changing the bending radian, thickness and number of layers of the plurality of arc-shaped damping plates (23) and the arc-shaped skeleton plates (22), the three-directional stiffness of the damping component (2) can be adjusted.

2. The shock absorption assembly with three-way adjustable stiffness according to claim 1, characterized in that: The arc-shaped skeleton plate (22) is a steel member.

3. The shock absorption assembly with three-way adjustable stiffness according to claim 1, characterized in that: The arc-shaped damping plate (23) is a rubber member.

4. A shock-absorbing assembly with three-way adjustable stiffness according to any one of claims 1-3, characterized in that: The damping component (2) further includes a first complementary plate (21) and a second complementary plate (24). One end face of the first complementary plate (21) is a convex arc surface, and the other end face is a flat surface. One end face of the second complementary plate (24) is a concave arc surface, and the other end face is a flat surface. The convex arc surface of the first complementary plate (21) and the concave arc surface of the second complementary plate (24) are respectively adapted and connected to the outermost two arc surfaces of the plurality of arc-shaped damping plates (23).

5. A shock-absorbing assembly with three-way adjustable stiffness according to claim 4, characterized in that: Both the first complementary plate (21) and the second complementary plate (24) are steel members.

6. The shock absorption assembly with three-way adjustable stiffness according to claim 5, characterized in that: The first complementary plate (21), the plurality of arc-shaped skeleton plates (22) and the second complementary plate (24) are vulcanized and connected through the plurality of arc-shaped damping plates (23).

7. A vibration isolation bearing, characterized in that: It includes a bearing platform (1), a base (3) and the damping component (2) according to any one of claims 4-6. Two bases (3) are arranged left and right. The bearing platform (1) is located between the two bases (3). The lower end of the bearing platform (1) is higher than the lower end of the base (3). The bearing platform (1) is wedge-shaped. The left and right sides of the bearing platform (1) are first inclined surfaces (11) that gradually converge from top to bottom. One side of the base (3) facing the bearing platform (1) is provided with a second inclined surface (31). The second inclined surface (31) is parallel to the adjacent first inclined surface (11). The second inclined surface (31) and the adjacent first inclined surface (11) are connected through the damping component (2).

8. The vibration isolation bearing according to claim 7, wherein: The two bases (3) are connected through an external connecting steel plate (4). There is a gap (5) between both the bearing platform (1) and the damping component (2) and the external connecting steel plate (4).

9. The vibration isolation bearing according to claim 7, characterized in that: The flat surface of the first complementary plate (21) is connected to the first inclined surface (11) on the same side. The flat surface of the second complementary plate (24) is connected to the second inclined surface (31) on the same side. The front and rear sides of the arc-shaped skeleton plate (22) are bent towards the bearing platform (1).

10. A vibration isolation bearing according to any one of claims 7-9, characterized in that: The bearing platform (1) is located in the center of the two bases (3). The two first inclined surfaces (11) are symmetric left and right. The two second inclined surfaces (31) are symmetric left and right.

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