A pendulum self-adaptive inertial bearing and an inertial coefficient adjusting method

Abstract

This invention relates to a pendulum-type adaptive inertia-capacity support and a method for adjusting the inertia-capacity coefficient. The pendulum-type adaptive inertia-capacity support includes a small flywheel, a large flywheel, a support base, a support top plate, rods, and a support rod. The small flywheel and the large flywheel are fixedly connected by the rods. The upper surface of the support base is a concave arc surface with a radius of curvature greater than that of the small flywheel. The lower edge of the small flywheel is tangent to the upper surface of the support base. The rods and the support rod are connected, and the support rod is connected to the support top plate. Compared with the prior art, the inertia container involved in this invention can provide a nonlinear inertia-capacity coefficient and has adaptive and self-resetting characteristics, as well as advantages such as simple mechanical form and ease of implementation.

Description

Technical Field

[0001] This invention relates to the field of high-end equipment manufacturing, and in particular to a pendulum-type adaptive inertia support and a method for adjusting the inertia coefficient. Background Technology

[0002] Currently, there are various mechanisms that can simulate the mechanical behavior of inertial capacitance, such as ball screw inertial capacitance, rack and pinion inertial capacitance, and tuned fluid inertial capacitance. Among them, rack and pinion inertial capacitance devices rely on the connection and drive between rack and pinion gears to encapsulate the flywheel inertia. The device structure is relatively complex and requires high machining precision.

[0003] Application CN117211436A discloses a dual-flywheel resettable inertial damper, which is implemented by a ball screw transmission system, a dual-flywheel unidirectional rotation system and an eddy current damping system. The device has a complex structure and lacks adaptive adjustment capability for the damping coefficient. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art by providing a pendulum adaptive inertia support and an inertia coefficient adjustment method that is simple in structure, easy to implement, and has self-resetting characteristics under large displacement conditions.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] According to one aspect of the present invention, a pendulum-type adaptive inertia-capacity support is provided, comprising a small flywheel, a large flywheel, a support base, a support top plate, a rod, and a support rod. The small flywheel and the large flywheel are fixedly connected by the rod. The upper surface of the support base is a concave arc surface with a radius of curvature greater than that of the small flywheel. The lower edge of the small flywheel is tangent to the upper surface of the support base. The rod and the support rod are connected, and the support rod is connected to the support top plate. The rod can rotate freely relative to the support rod along its axial direction.

[0007] Furthermore, one end of the rod is fixedly connected to the large flywheel, and the other end is movably connected to the support rod.

[0008] Furthermore, the fixed connection between the small flywheel and the rod is located between the large flywheel and the support rod.

[0009] Furthermore, the radius of the smaller flywheel is smaller than the radius of the larger flywheel.

[0010] Furthermore, the top support plate is located at the uppermost end of the pendulum adaptive inertia support, one end of the support rod is movably connected to the rod, and the other end is fixedly connected to the top support plate.

[0011] Furthermore, the supporting top plate and the supporting support are respectively connected to the connection points that require inertial tolerance, and relative displacement occurs between the supporting top plate and the supporting support.

[0012] Furthermore, the small flywheel rolls on the upper surface of the support.

[0013] Furthermore, the radius of curvature of the upper surface of the support is selected according to the inertial capacity requirement.

[0014] According to another aspect of the present invention, a method for adjusting the inertia coefficient of a pendulum adaptive inertia support is provided, comprising the following steps:

[0015] Obtain the required inertia coefficient for the application scenario, design the radius of curvature of the upper surface of the support, and calculate the inertia coefficient of the pendulum adaptive inertia support until the inertia coefficient requirement is met.

[0016] Furthermore, the calculation method for the compressive inertia coefficient of the pendulum adaptive compressive support is as follows:

[0017]

[0018] Where, m in Let r1 be the radius of the small flywheel, m1 be the mass of the small flywheel, r2 be the radius of the large flywheel, m2 be the mass of the large flywheel, u1 be the horizontal displacement of the support, R be the radius of curvature of the upper surface of the support, u2 be the horizontal displacement between the support rod and the top plate, and F be the radius of curvature of the support. in It is a horizontal inertial force.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. The pendulum-type adaptive inertial-capacity support proposed in this invention comprises a small flywheel, a rod, a large flywheel, a support base, a support top plate, and a support rod. The small flywheel, rod, and large flywheel are sequentially connected to form a flywheel system. The small flywheel is connected to the top plate of the seismic isolation layer via the support rod and is placed on a curved support base. Under external forces, a relative acceleration is generated between the support base and the top plate, causing the small flywheel to rotate and thus the entire flywheel system to rotate, simulating the mechanical behavior of inertial capacity and achieving improved mass efficiency. Compared with existing technologies, the inertial container involved in this invention can provide a nonlinear inertial-capacity coefficient, thereby generating self-adaptation under large displacement conditions, and can adapt to various working scenarios, especially seismic isolation structures.

[0021] 2. The inertial container provided by the present invention is connected to the arc-shaped base and has self-resetting characteristics.

[0022] 3. The inertia coefficient adjustment method proposed in this invention, after clarifying the inertia coefficient requirements under the application scenario, can realize the adjustment of the inertia coefficient of the pendulum adaptive inertia coefficient support by designing the mass and radius of the large and small flywheels, so as to meet the inertia coefficient requirements under different application scenarios. Attached Figure Description

[0023] Figure 1 Schematic diagram of a pendulum-type adaptive inertia-capacity support;

[0024] Figure 2 A schematic diagram of the pendulum adaptive inertial support from another perspective;

[0025] In the diagram, 1 is the small flywheel, 2 is the large flywheel, 3 is the support bracket, 4 is the support top plate, 5 is the rod, and 6 is the support rod. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0027] like Figure 1 and Figure 2 As shown, the present invention relates to a pendulum adaptive inertia support, comprising a small flywheel 1, a large flywheel 2, a support 3, a support top plate 4, a rod 5 and a support rod 6. The support is fixedly connected to both ends of the structure requiring inertia through the support 3 and the support top plate 4, respectively, and a relative displacement is generated between the support 3 and the support top plate 4.

[0028] In this embodiment, the small flywheel 1 and the large flywheel 2 are connected by a rod 5 passing through the center of both. The small flywheel 1, the large flywheel 2 and the rod 5 are fixedly connected, and the small flywheel 1, the large flywheel 2 and the rod 5 can rotate coaxially.

[0029] In this embodiment, one end of the rod 5 is fixedly connected to the large flywheel 2, and the other end is connected to the support rod 6. The connection is a rotating joint, and the fixedly connected small flywheel 1, large flywheel 2, and rod 5 can rotate freely relative to the support rod 6 along the axial direction. The support rod 6 is used to connect the support top plate 4. In this embodiment, the support top plate 4 is a rectangular plate located at the top of the pendulum adaptive inertia support, and the support top plate 4 and the support rod 6 are fixedly connected.

[0030] In this embodiment, the support 3 is located at the bottom of the pendulum-type adaptive inertia support. The bottom surface of the support 3 is flat and used for connection and fixation to the structure requiring inertia tolerance. Specifically, the upper surface of the support 3 is a concave arc surface with a defined curvature, and this arc surface is tangent to the lower edge surface of the small flywheel 1. Furthermore, the radius of curvature of the arc surface is greater than the radius of the small flywheel 1, allowing the small flywheel 1 to roll along the upper surface of the support 3. As a preferred embodiment, the curvature of the support 3 can be any value, but a fixed curvature is preferred. Moreover, during the rolling of the small flywheel 1 along the upper surface of the support 3, the relative position between the support 3 and the support top plate 4 of the pendulum-type adaptive inertia support can be automatically reset and adjusted.

[0031] When the pendulum-type adaptive inertia-capacity support is in operation, the support 3 moves horizontally under external drive, exhibiting horizontal acceleration, which in turn causes the small flywheel 1 to rotate. The axis of the small flywheel moves horizontally relative to the support, which in turn causes the upper structure to move horizontally via the support rod 6, generating horizontal acceleration. Simultaneously, the large flywheel 2 rotates via the rod 5, with the same angular velocity and angular acceleration as the small flywheel 1. Compared with existing technologies, this invention achieves significant efficiency gains, and its mechanical form is simple, installation is flexible, and it is easy to implement.

[0032] The pendulum-type adaptive inertia-capacity support proposed in this invention utilizes a rod-shaft transmission to drive a flywheel to rotate, thereby encapsulating the flywheel's inertia. The output force of the inertia container is proportional to the relative acceleration between its two endpoints; this ratio is the inertia-capacity coefficient. The inertia-capacity coefficient of the inertia container is derived as follows:

[0033] Assume that the radius of the small flywheel 1 is r1 and its mass is m1, and the radius of the large flywheel 2 is r2 and its mass is m2. The angular velocity of both flywheels is ω, and their angular acceleration is... The moment of inertia of the flywheel system is J, the horizontal displacement of the support 3 is u1, the fixed curvature of the upper surface of the support 3 is R, the horizontal displacement of the support rod 6 and the top plate 4 is u2, and the horizontal inertial force is F. in The mass of the connecting rods is not considered, and the energy loss caused by friction of the device is ignored.

[0034] The angular velocity ω of the small flywheel 1 and the large flywheel 2 can be expressed as:

[0035]

[0036] The angular accelerations of the small flywheel 1 and the large flywheel 2 are: It can be represented as:

[0037]

[0038] The moment of inertia J of the flywheel system is:

[0039]

[0040] The gravitational potential energy of the flywheel system increases by E p for:

[0041]

[0042] Based on the principle that input power equals output power, the inertial capacitance device satisfies the following equation:

[0043]

[0044] According to formulas (1), (2), (3), and (4), the horizontal force F in It can be represented as:

[0045]

[0046] According to the definition of the inertia coefficient, the expression for the inertia coefficient of the inertia container is:

[0047]

[0048] For the inertia coefficient adjustment method of the pendulum adaptive inertia support in this embodiment, after clarifying the inertia coefficient requirements under the application scenario, the inertia coefficient of the pendulum adaptive inertia support can be adjusted by designing the mass and radius of the large flywheel 2 and the small flywheel 1 to meet the inertia coefficient requirements under different application scenarios.

[0049] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A pendulum-type adaptive inertia-capacity support, characterized in that, It includes a small flywheel (1), a large flywheel (2), a support base (3), a support top plate (4), a rod (5), and a support rod (6). The upper surface of the support base (3) is a concave arc surface, and the radius of curvature of the arc surface is greater than the radius of the small flywheel (1). The lower edge of the small flywheel (1) is tangent to the upper surface of the support base (3), and the small flywheel (1) rolls on the upper surface of the support base (3). The small flywheel (1) and the large flywheel (2) are connected by a rod (5) passing through the center of both. The small flywheel (1), the large flywheel (2) and the rod (5) are fixedly connected, and the small flywheel (1), the large flywheel (2) and the rod (5) rotate coaxially. The radius of the small flywheel (1) is smaller than the radius of the large flywheel (2). One end of the rod (5) is fixedly connected to the large flywheel (2), and the other end is rotatably connected to the support rod (6). The fixedly connected small flywheel (1), large flywheel (2) and rod (5) can rotate freely relative to the support rod (6) along the axial direction. The fixed connection between the small flywheel (1) and the rod (5) is located between the large flywheel (2) and the support rod (6). The supporting top plate (4) and the supporting support (3) are respectively connected to the connection points that require inertial tolerance, and relative displacement occurs between the supporting top plate (4) and the supporting support (3); The supporting top plate (4) is located at the uppermost end of the pendulum adaptive inertia support, and the supporting top plate (4) is fixedly connected to the supporting rod (6). The mass and radius of the large flywheel (2) and the small flywheel (1) are selected according to the inertia requirements. When the pendulum adaptive inertia support is working, the supporting support (3) moves horizontally under external drive, has horizontal acceleration, and drives the small flywheel (1) to rotate. The axis of the small flywheel moves horizontally relative to the support, and drives the upper structure to move horizontally through the supporting rod (6), generating horizontal acceleration. At the same time, the large flywheel (2) is driven to rotate through the rod (5), and the angular velocity and angular acceleration are the same as those of the small flywheel (1).

2. A method for adjusting the inertia coefficient of a pendulum-type adaptive inertia support as described in claim 1, characterized in that, Includes the following steps: Obtain the inertia coefficient requirements of the application scenario, design the mass and radius of the large flywheel (2) and the small flywheel (1), and calculate the inertia coefficient of the pendulum adaptive inertia support until the inertia coefficient requirements are met.

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