Vibration isolation device suitable for long and thin communication equipment in low closed space
Through the optimized design of flexible vibration isolation modules and multi-stage vibration isolation units, the high-performance vibration isolation problem of slender communication equipment in low and closed spaces is solved, low-frequency vibration isolation and multi-degree of freedom vibration attenuation are realized, and the special form of slender communication equipment is adapted to.
Patent Information
- Application Number
- CN202510531227.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2025-07-18
AI Technical Summary
The prior art is difficult to achieve high-performance vibration isolation of elongated communication equipment in low and confined spaces, especially when installation space is limited, traditional vibration reduction methods are difficult to meet the strict communication needs.
A flexible vibration isolation module is designed, including a protective shell and a multi-stage vibration isolation unit. Through an inverted pendulum mechanism and a floating frame structure, the structure of the vibration isolation device is optimized to achieve multi-degree of freedom vibration attenuation, and adapt to the special form of elongated communication equipment.
It significantly improves the low-frequency vibration isolation capability of slender communication equipment, widens the vibration isolation frequency band, realizes multi-degree-of-freedom vibration attenuation, and adapts to the complex vibration isolation needs in low and confined spaces.
Smart Images
Figure CN120343844A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of vibration damping technology. More specifically, it relates to a vibration isolation device applicable to slender communication devices in low and confined spaces. Background Art
[0002] All kinds of mobile platforms shoulder important tasks such as scientific research and exploration, intelligence collection, and stealth attacks. Real-time communication is one of their core functions. Especially in the water environment, the slender communication device with a slender configuration is different from the traditional towed communication device. It is directly installed on the carrier platform, which can avoid time-consuming and laborious retraction and deployment operations. In addition, various disturbance sources and self-noises in the service environment are complex, making the communication device meet the requirements but greatly affected by mechanical vibration and noise.
[0003] Currently, in engineering practice, for the vibration damping of slender communication devices, two common measures are mainly taken. One is to fill elastic materials such as rubber around the slender communication device, and the other is to design a vibration damping support outside the communication device. However, with the increasingly stringent communication requirements, the existing vibration damping means are increasingly difficult to meet the requirements; due to the special structure and function of the communication device itself, the active vibration damping device is difficult to play a role in such devices. At the same time, limited by the installation space, it is difficult to use low-stiffness materials to further expand the vibration isolation frequency band, which undoubtedly increases the difficulty of implementing the vibration damping technology. All these factors make it extremely difficult for slender communication devices to achieve high-performance vibration damping and noise reduction. To significantly improve the communication quality, extremely severe challenges are faced.
[0004] Therefore, how to achieve high-performance vibration isolation of slender conformal communication devices by purely passive means in a limited low and confined space is a technical problem that urgently needs to be solved at present. Summary of the Invention
[0005] Aiming at the defects of the existing technology, the purpose of this application is to provide a vibration isolation device applicable to slender communication devices in low and confined spaces, aiming to solve the problem that the existing slender communication devices cannot achieve high-performance vibration isolation due to installation space limitations.
[0006] To achieve the above purpose, in the first aspect, this application provides a vibration isolation device applicable to slender communication devices in low and confined spaces, including: a flexible vibration isolation module, the flexible vibration isolation module includes a protective shell, and a first vibration isolation unit arranged in the protective shell. The protective shell, the first vibration isolation unit, and the slender communication device to be vibration-isolated are connected in sequence, so that the slender communication device to be vibration-isolated is horizontally suspended in the protective shell; the first vibration isolation unit is inclined relative to the horizontal plane, and is arranged in pairs on both sides of the slender communication device, and the adjacent first vibration isolation units on the same side are inclined in opposite directions; the height of the connection point between the first vibration isolation unit and the slender communication device is lower than the centroid height of the slender communication device.
[0007] In a second aspect, the present application provides a vibration isolation device applicable to slender communication devices in low and enclosed spaces, comprising: a flexible vibration isolation module, the flexible vibration isolation module including a protective housing, and a suspended U-shaped groove, a first vibration isolation unit and a second vibration isolation unit disposed within the protective housing, the first vibration isolation unit connecting the slender communication device to the suspended U-shaped groove so that the slender communication device is horizontally suspended within the suspended U-shaped groove; the second vibration isolation unit is disposed obliquely with respect to the horizontal plane, and is arranged in pairs on both sides of the suspended U-shaped groove, and adjacent second vibration isolation units on the same side are inclined in opposite directions; the second vibration isolation unit connects the suspended U-shaped groove to the protective housing so that the mouth of the suspended U-shaped groove faces downward and is horizontally suspended within the protective housing; the connection point between the suspended U-shaped groove and the second vibration isolation unit is lower than the centroid height of the slender communication device.
[0008] Further, the first vibration isolation units are arranged in columns directly above the central axis of the slender communication device, and adjacent first vibration isolation units are inclined in opposite directions.
[0009] Further, one end of the first vibration isolation unit penetrates into and is fixed to the bottom surface of the suspended U-shaped groove, and the other end is connected to the slender communication device, so that the first vibration isolation unit and the slender communication device form an inverted pendulum mechanism.
[0010] Further, both the first vibration isolation unit and the second vibration isolation unit are of strip-shaped structures.
[0011] In a third aspect, the present application provides a vibration isolation device applicable to slender communication devices in low and enclosed spaces, comprising a protective housing and a flexible vibration isolation module, the flexible vibration isolation module being located within the protective housing and including a first vibration isolation unit, a second vibration isolation unit and a vibration damping float; the protective housing, the vibration damping float and the slender communication device to be vibration isolated are coaxially sleeved from outside to inside in sequence; the second vibration isolation unit connects the vibration damping float and the protective housing so that the vibration damping float is suspended within the protective housing; a plurality of the first vibration isolation units connect the slender communication device to the vibration damping float so that the slender communication device is suspended within the vibration damping float.
[0012] Further, the second vibration isolation unit is of an annular structure, the annular structure is sleeved on the vibration damping float, and its circumferential outer wall abuts against the protective housing, so that the vibration damping float and the protective housing are coaxially arranged.
[0013] Further, the first vibration isolation unit is of a U-shaped strip structure, and paired fixing holes are provided in the circumferential directions at both ends of the vibration damping float; both ends of each U-shaped strip structure pass through the corresponding fixing holes and are connected to the slender communication device in the radial direction.
[0014] Further, each end of the damping float is provided with three of the U-shaped strip structures, and the included angle between adjacent U-shaped strip structures is 120°.
[0015] Further, it further includes a pair of vibration isolation bases. The vibration isolation bases are provided with bumps, and grooves are correspondingly provided on the other surface facing away from the bumps. The protective shell is fixed on the bumps, and the outer edge end surface of the groove is connected to an external carrier.
[0016] In a fourth aspect, a vibration isolation device applicable to slender communication devices in a low and enclosed space is disclosed. The vibration isolation device is formed by combining at least two vibration isolation devices as described above, and is used for simultaneously isolating vibrations of multiple slender communication devices.
[0017] It can be understood that the beneficial effects of the above second aspect to the fourth aspect can refer to the relevant descriptions in the above first aspect, and will not be elaborated here.
[0018] Generally speaking, compared with the prior art by the above technical solutions conceived in the present application, the following beneficial effects are obtained: (1) Through the structural optimization design of the flexible vibration isolation module in a low and enclosed space (i.e., inside the protective shell), the present application provides a primary vibration isolation device. The primary vibration isolation device has a simple structure, can realize the expansion of the vertical dimension and the optimization of the stiffness, significantly improves the low-frequency vibration isolation ability of the vibration isolation device for slender communication devices, and solves the problem that it is difficult to broaden the vibration isolation frequency band of traditional passive vibration isolation devices in a slender enclosed space.
[0019] (2) Through the structural optimization design of the flexible vibration isolation module, the present application provides two secondary vibration isolation devices with different structural forms. The flexible vibration isolation module is designed to include an inverted pendulum mechanism or form a symmetrically distributed three-dimensional decoupling structure, which can not only adapt to the special shape of slender communication devices, but also meet the requirements of multi-degree-of-freedom vibration attenuation.
[0020] (3) The present application proposes that through the flexible combination of rigid floating frames in various forms and multi-stage vibration isolation units, it can meet the complex vibration isolation requirements of slender communication devices arranged orthogonally in a low space. Description of the Drawings
[0021] Figure 1 It is a schematic diagram of a primary vibration isolation device applicable to slender communication devices in a low and enclosed space provided in Embodiment 1 of the present application; Figure 2 It is a side view schematic diagram of a primary vibration isolation device applicable to slender communication devices in a low and enclosed space provided in Embodiment 1 of the present application; Figure 3 It is a structural schematic diagram of a vibration isolation base provided in Embodiment 1 of the present application; Figure 4 It is a schematic diagram of the secondary vibration isolation device applicable to slender communication equipment in a low and enclosed space provided in Embodiment 2 of the present application; Figure 5 It is a side view schematic diagram of the secondary vibration isolation device applicable to slender communication equipment in a low and enclosed space provided in Embodiment 2 of the present application; Figure 6 It is a schematic diagram of the vibration isolation principle of the secondary vibration isolation device applicable to slender communication equipment in a low and enclosed space provided in Embodiment 2 of the present application; Figure 7 It is a schematic diagram of the horizontal negative stiffness mechanism of the vibration isolation device in a low and enclosed space provided in Embodiment 2 of the present application; Figure 8 It is a schematic structural diagram of a secondary vibration isolation device applicable to slender communication equipment in a low and enclosed space provided in Embodiment 3 of the present application; Figure 9 It is a side view structural schematic diagram of a secondary vibration isolation device applicable to slender communication equipment in a low and enclosed space provided in Embodiment 3 of the present application; Figure 10 It is an assembly schematic diagram of a secondary vibration isolation device applicable to slender communication equipment in a low and enclosed space and a vibration isolation base provided in Embodiment 3 of the present application; Figure 11 It is a schematic diagram of the actual vibration test result of the secondary vibration isolation device provided in Embodiment 3 of the present application; Figure 12 It is a schematic structural diagram of a T-shaped secondary vibration isolation device applicable to slender communication equipment in a low and enclosed space provided in Embodiment 4 of the present application; Figure 13 It is a side view schematic diagram of the structure of a T-shaped secondary vibration isolation device applicable to slender communication equipment in a low and enclosed space provided in Embodiment 4 of the present application.
[0022] In all the drawings, the same reference numerals are used to represent the same elements or structures, where: 1 - protective housing, 2 - slender communication equipment, 21 - load fixing structure, 3 - first vibration isolation unit, 4 - suspended U-shaped groove, 5 - second vibration isolation unit, 6 - damping floating cylinder, 7 - vibration isolation base, 71 - bump, 72 - groove, 8 - T-shaped protective housing, 9 - T-shaped suspended U-shaped groove, O - center of mass. Detailed implementation manners
[0023] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0024] In this text, the term "and / or" describes the relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In this text, the symbol " / " indicates that the associated objects are in an "or" relationship. For example, A / B means A or B.
[0025] In the description of the specification and claims of this application, terms such as "first" and "second" are used to distinguish different objects, rather than to describe the specific order of the objects. For example, the first response message and the second response message are used to distinguish different response messages, rather than to describe the specific order of the response messages.
[0026] In the embodiments of this application, words such as "exemplary" or "for example" are used to give examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.
[0027] In the description of the embodiments of this application, unless otherwise specified, the meaning of "a plurality of" refers to two or more. For example, a plurality of processing units refers to two or more processing units, and a plurality of elements refers to two or more elements, etc.
[0028] The embodiments of this application will be described below with reference to the accompanying drawings in the embodiments of this application.
[0029] Embodiment 1 This embodiment provides a vibration isolation device applicable to slender communication devices in low and enclosed spaces, as Figure 1 and 2 shown. It includes a flexible vibration isolation module. The flexible vibration isolation module includes a protective housing 1 and a first vibration isolation unit 3 disposed inside the protective housing 1. Load fixing structures 21 are provided at both ends of the slender communication device 2. The load fixing structures 21 are tightly sleeved and installed at both ends of the slender communication device 2 to achieve mechanical connection, and the first vibration isolation unit 3 is also connected to the protective housing 1, so that the slender communication device 2 is horizontally suspended inside the protective housing 1. The height of the connection point between the first vibration isolation unit 3 and the slender communication device 2 is lower than the height of the centroid O of the slender communication device 2, thereby increasing the vertical dimension of the flexible vibration isolation module.
[0030] The foregoing first vibration isolation unit 3 is arranged obliquely with respect to the horizontal plane, and the inclination angle is about 45°. The first vibration isolation units 3 are arranged in pairs on both sides of the load fixing structure 21, and the adjacent first vibration isolation units 3 on the same side are inclined in opposite directions along the length direction of the slender communication device, so as to achieve a certain stiffness in the axial direction of the slender communication device, and enable the slender communication device 2 to have a certain stability in the axial direction within the protective housing 1. The shape of the first vibration isolation unit 3 is strip-shaped, and it is made of various non-magnetic materials such as ethylene-vinyl acetate copolymer, thermoplastic polyurethane elastomer, silicone rubber, glass fiber or resin. Other units or connection structures constituting the flexible vibration isolation module in this vibration isolation device are all prepared from any one of the above non-magnetic materials. The selection of the specific non-magnetic material is determined by the structural form of the vibration isolation device and the processing difficulty of each structural unit.
[0031] In this embodiment, the protective housing 1 is a hollow quadrangular prism-shaped closed frame, and vibration isolation bases 7 (not shown in the figure) are evenly arranged at the four corners of the outer bottom surface thereof. The vibration isolation bases 7 are connected to the external carrier to achieve the shock absorption effect. As Figure 3 shown, the vibration isolation base 7 is a convex-shaped vibration isolation base, on which there is a convex block 71, and a groove 72 is correspondingly provided on the other surface facing away from the convex block. The protective housing 1 is fixed on the convex block 71 by means of bolt connection, and the outer edge end surface of the groove 72 is connected to the external carrier, and the connection method can be bolt connection or other similar mechanical connection methods.
[0032] Embodiment 2 This embodiment provides a vibration isolation device applicable to a slender communication device in a low and closed space. As Figure 4 and 5 shown, this vibration isolation device is a two-stage vibration isolation device. The flexible vibration isolation module includes a protective housing 1 and a suspended U-shaped groove 4, a first vibration isolation unit 3 and a second vibration isolation unit 5 located inside the protective housing 1. Both the first vibration isolation unit 3 and the second vibration isolation unit 5 are strip-shaped structures, and the materials are both flexible non-magnetic materials. The grooved suspended U-shaped groove 4 is a grooved fiberglass mass block.
[0033] The second vibration isolation unit 5 connects the slender communication device 2 to the suspended U-shaped groove 4, so that the slender communication device 2 is horizontally suspended in the suspended U-shaped groove 4; the second vibration isolation units 5 are arranged in pairs on both sides of the suspended U-shaped groove 4 along the central axis direction of the suspended U-shaped groove 4. The second vibration isolation units 5 are all arranged obliquely with respect to the horizontal plane, and the inclination angle is about 45 degrees, and the adjacent second vibration isolation units 5 on the same side are inclined in opposite directions along the length direction of the U-shaped groove 4.
[0034] Specifically, the second vibration isolation unit 5 includes two pairs, which are respectively arranged on both sides of the suspended U-shaped groove 4. One end of each second vibration isolation unit 5 is connected to the outer wall of the suspended U-shaped groove 4, and the other end is connected to the inner wall of the protective shell 1, so that the notch of the suspended U-shaped groove 4 faces downward and is horizontally suspended in the protective shell 1.
[0035] The connection points between the suspended U-shaped groove 4 and the second vibration isolation unit 5 are both lower than the mass center height of the slender communication device 2, so as to increase the vertical height of the second vibration isolation unit 5 as one of the primary vibration isolation units, thereby reducing its stiffness under the same strength.
[0036] In this embodiment, there are two first vibration isolation units 3, which are arranged in a row directly above the slender communication device 2 along the length direction thereof, and a pair of first vibration isolation units 3 are inclined in opposite directions along the length direction of the slender communication device 2, with an inclination angle of about 45°. At this angle, the slender communication device 2 is more stable.
[0037] In this embodiment, one end of the first vibration isolation unit 3 is obliquely inserted into the bottom surface of the suspended U-shaped groove 4 and fixed, and the other end of the first vibration isolation unit 3 is connected to the slender communication device 2, so that the first vibration isolation unit 3 and the slender communication device 2 form an inverted pendulum mechanism. The characteristic length parameter of the vibration isolation unit in the vibration reduction system is usually inversely proportional to the stiffness. The longer the characteristic length, the smaller the stiffness of the vibration isolation unit and the better the vibration reduction performance. Considering that it is difficult to make the characteristic length parameter of the vibration isolation unit extremely low when designing a vibration reduction system in a slender space, in order to further reduce the stiffness of the vibration reduction device of the slender communication equipment, the inverted pendulum horizontal negative stiffness technology is introduced.
[0038] The vibration reduction device of this embodiment also includes the vibration isolation base 7 described in Example 1, which is provided with a protrusion 71, and a groove 72 is correspondingly provided on the other side away from the protrusion. The protective shell 1 is fixed on the protrusion 71, and the outer edge end face of the groove 72 is connected to the external carrier.
[0039] like Figure 6 As shown, it is a schematic diagram of the two-stage vibration isolation principle of a slender communication device in a low and confined space (i.e., the schematic diagram of the principle of the two-stage vibration isolation device of the present application). , through the stiffness coefficient is The damping coefficient is The first vibration isolation unit (i.e., the first vibration isolation unit 3) and the mass The floating frame (i.e., the suspended U-shaped groove 4) is connected to the floating frame through a stiffness coefficient of The damping coefficient is The secondary vibration isolation unit (i.e., the second vibration isolation unit 5) and the mass The protective shell 1 is connected to the outer protective shell.
[0040] Taking vertical vibration reduction into consideration, the displacement excitation of the equipment protection housing 1 is , the displacement response of the slender communication equipment 2 at time t is , the displacement response of the floating frame at time t is , then the dynamic equation of the two-stage passive vibration isolation system is:
[0041] Among them, M is the mass matrix, ; C is the damping matrix I, ; K is the stiffness matrix I, ; A is the damping matrix II, ; B is the stiffness matrix II, ; is the acceleration matrix, is the velocity matrix, X is the response displacement matrix, ; x 0 is the displacement generated by the environmental excitation of the protection housing 1, is the velocity of the protection housing 1.
[0042] Suppose the displacement response of the slender communication equipment 2 with mass at t time is , suppose the displacement response of the floating frame with mass at t time is , among them, X 1 is the displacement response of the slender communication equipment 2, X 2 is the displacement response of the floating frame 4, φ 1 is the initial phase of the slender communication equipment's movement, φ 2 is the initial phase of the floating frame's movement, ω is the excitation frequency, j is the imaginary unit. Substituting the two displacement responses into the dynamic equation, we can get:
[0043] Among them, u 0 is the amplitude of the displacement of the equipment protection housing 1; (i.e., the vibration transfer ratio of the second-stage vibration isolation device) is: In the above formula, is the vibration transfer ratio of the two-stage passive vibration isolation device; is the mass ratio of the slender communication equipment to the floating frame, ; is the natural frequency of the second-stage vibration isolation structure The ratio with the natural frequency of the first-level vibration isolation structure , , , ; is the damping ratio of the first-level vibration isolation structure, ; is the damping ratio of the second-level vibration isolation structure, ; is the frequency ratio of the excitation frequency to the natural frequency of the first-level vibration isolation structure, .
[0044] By reasonably designing the dynamic parameters of the first-level vibration isolation structure and the second-level vibration isolation structure and the mass of the floating frame, compared with the first-level vibration isolation device provided in Embodiment 1, a substantial improvement in vibration isolation performance can be achieved.
[0045] As Figure 7 shown, it is the horizontal negative stiffness mechanism of the non-magnetic interference high-performance vibration isolation device in a low and enclosed space. The characteristic length parameters of each level of vibration isolation unit in the vibration isolation device are usually inversely proportional to the stiffness. The longer the characteristic length, the smaller the stiffness of the vibration isolation unit and the better the vibration isolation performance. The mass body m is fixedly connected to the base through the horizontal spring k , and moreover, the mass body m is also connected to the base by a massless rod with a rotating pair, and the rotating pair is at a height difference of L below the centroid of the mass body. Assuming that the small displacement of the mass body m vibrating to the right is x , then the relationship between the angle θ by which the connecting rod rotates to the right and x satisfies
[0046] And in this state, the elongation of the spring k can be approximately expressed as x , so the potential energy function V of the system can be expressed as:
[0047] It can be seen that under the premise of small-amplitude vibration, the illustrated inverted pendulum mechanism provides an equivalent horizontal negative stiffness K N :
[0048] This negative stiffness mechanism can further reduce the horizontal stiffness of the vibration isolation system, thereby improving the vibration isolation performance of the slender communication equipment in the horizontal direction.
[0049] Embodiment 3 This embodiment provides a vibration isolation device applicable to slender communication devices in low and enclosed spaces, such as Figures 8 - 9 shown. This vibration isolation device is also a two-stage vibration isolation device, including a flexible vibration isolation module. The flexible vibration isolation module includes a protective housing 1 and a first vibration isolation unit 3, a second vibration isolation unit 5, and a damping floating cylinder 6 located inside the protective housing 1. The protective housing 1, the damping floating cylinder 6, and the slender communication device 2 are coaxially sleeved from the inside out in sequence; the second vibration isolation unit 5 connects the damping floating cylinder 6 and the protective housing 1, so that the damping floating cylinder 6 is located at the exact center of the protective housing 1; a plurality of first vibration isolation units 3 connect the slender communication device 2 and the damping floating cylinder 6, so that the slender communication device 2 is suspended in the damping floating cylinder 6.
[0050] In this embodiment, the second vibration isolation unit 5 is a circular ring structure, which is tightly sleeved on the hollow damping floating cylinder 6, and the circumferential outer wall of the ring structure is tightly abutted and fixed on the protective housing 1, so that the damping floating cylinder 6 is suspended in the protective housing 1 and is coaxially arranged with the protective housing 1.
[0051] The aforementioned second vibration isolation unit 5, as a two-stage vibration isolation unit, is mainly made of ethylene-vinyl acetate copolymer, which is flexible and has low radial stiffness. It is symmetrically sleeved at both ends of the damping floating cylinder 6 along the central axis direction of the damping floating cylinder 6. In this embodiment, it is fixed between the damping floating cylinder and the external protective shell through strong glue and geometric dimension constraints.
[0052] The aforementioned damping floating cylinder 6 is made of glass fiber with a high modal frequency. Fixed holes are provided in pairs on the circumferences at both ends of the damping floating cylinder 6; the first vibration isolation unit 3, as a one-stage vibration isolation unit, selects six silicone rubber rings. Three silicone rubber rings are evenly distributed at each end of the slender communication device 2. In the vertical plane, the included angle between adjacent silicone rubber rings is 120 degrees, and they are arranged in an equilateral triangle. Each rubber ring passes through a corresponding pair of fixed holes to be connected to the damping floating cylinder 6, and the side away from the damping floating cylinder 6 is fixedly connected to the slender communication device 2, and the silicone rubber rings at each end are distributed in an equilateral triangle along the cross-section direction of the slender communication device 2.
[0053] The damping device of this embodiment further includes the vibration isolation base 7 described in Embodiment 1, such as Figure 10 shown. In other embodiments, the outer shell 1 can also have a shape that is thicker at both ends and thinner in the middle, and the thicker positions at both ends of the protective housing 1 are fixed to the vibration isolation base 7 by bolt fixing. The lower end surface of the vibration isolation base 7 is connected to the external carrier by bolt fixing, which is more stable.
[0054] Such as Figure 11As shown, it is a schematic diagram of the actual vibration test results of the dual-stage vibration damping device based on this embodiment. By using two sensors for synchronous measurement, it can be seen from the figure that the vibration transfer rate of the vibration damping device provided in this embodiment reaches approximately -60 dB near the working frequency band, having the expected high vibration isolation performance.
[0055] Embodiment 4 This embodiment provides a combined vibration isolation device, which is a vibration isolation device formed by combining two sets of two-stage vibration isolation devices in Embodiment 2 and can meet the vibration isolation requirements of two slender vibration isolation devices. Specifically, in this embodiment, the two protective shells and two floating frames in the flexible vibration isolation module are respectively designed into a T-shaped structure, and after sleeving them, they are connected by the second vibration isolation unit 5. The slender communication device to be vibration-isolated is suspended in the floating frame by the first vibration isolation unit 3 to achieve vibration isolation for two slender communication devices 2 arranged orthogonally at the same time.
[0056] As Figure 12 and Figure 13 As shown, the vibration isolation device provided in this embodiment includes two sets of two-stage vibration isolation devices arranged orthogonally, specifically including a T-shaped suspended U-shaped groove 9 and a T-shaped protective shell 8 sleeved outside the T-shaped suspended U-shaped groove 9. The T-shaped protective shell 8 is orthogonally and fixedly composed of two linear protective shells 1. The T-shaped suspended U-shaped groove 9 is orthogonally composed of two suspended U-shaped grooves 4. The openings of the two suspended U-shaped grooves 4 face the same direction. One end of one suspended U-shaped groove 4 abuts against the middle part of the outer side wall of the other suspended U-shaped groove 4 to form a T shape, and a slender communication device 2 is arranged in each suspended U-shaped groove 4.
[0057] Specifically, inside the T-shaped protective shell 8, the two suspended U-shaped grooves 4 are respectively connected and fixed orthogonally in the horizontal and vertical directions to form a T-shaped suspended U-shaped groove 9. One end of the horizontal suspended U-shaped groove 4 abuts against the middle side surface of the vertical suspended U-shaped groove 4, and their openings both face downward.
[0058] Figure 12 and Figure 13 In the horizontal protective shell in
[0059] Figure 12 and Figure 13In the vertical protective housing, a second vibration isolation unit 5 is provided only on the side of the vertical floating U-shaped groove away from the horizontal floating U-shaped groove, connecting the vertical floating U-shaped groove to the vertical protective housing. The specific connection method is the same as that in Embodiment 2. In this way, the second vibration isolation unit 5 in the vertical floating U-shaped groove and the second vibration isolation unit 5 in the horizontal floating U-shaped groove form a two-stage vibration isolation unit, suspending the T-shaped floating U-shaped groove 9 in the middle of the T-shaped protective housing 8. The connection method between the slender communication device 2 in the vertical floating U-shaped groove and the vertical floating U-shaped groove is the same as that in Embodiment 2, that is, it is connected to the vertical floating U-shaped groove 4 through the inclined first vibration isolation unit 3 and suspended inside the vertical floating U-shaped groove.
[0060] In this embodiment, through the flexible combination of the T-shaped rigid floating frame and the two-stage vibration isolation unit, it can meet the complex vibration isolation requirements of orthogonally arranged slender communication devices in a low space.
[0061] In other embodiments, the flexible vibration isolation module can also be flexibly configured according to the actual number of slender communication devices and application scenarios, not limited to the T shape only, so as to achieve multi-degree-of-freedom vibration isolation of multiple slender communication devices. The flexible vibration isolation module and the corresponding connection structure are made of various non-magnetic materials such as ethylene-vinyl acetate copolymer, thermoplastic polyurethane elastomer, silicone rubber, glass fiber, resin, etc. The specific shapes and wall thicknesses of the first-stage vibration isolation unit and the second-stage vibration isolation unit are determined according to the installation method, the difficulty of processing non-magnetic materials, and actual application requirements, etc.
[0062] It should be understood that expressions such as "including" and "may include" that can be used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as "including" and / or "having" can be interpreted as indicating a specific characteristic, number, operation, constituent element, component, or a combination thereof, but cannot be interpreted as excluding the existence or possibility of addition of one or more other characteristics, numbers, operations, constituent elements, components, or a combination thereof.
[0063] In addition, in this application, the expression "and / or" includes any and all combinations of the associated listed words. For example, the expression "A and / or B" can include A, can include B, or can include both A and B.
[0064] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected and the relative position relationship after connection remains unchanged. "Rotational connection" means that the two are connected and can rotate relative to each other after connection. "Sliding connection" means that the two are connected and can slide relative to each other after connection. The orientation terms mentioned in the embodiments of the present application, such as "top", "bottom", "inside", "outside", "left", "right", etc., are only references to the direction of the attached drawings. Therefore, the orientation terms are used to better and more clearly explain and understand the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation on the embodiments of the present application.
[0065] In addition, in the embodiments of the present application, mathematical concepts such as symmetry, equality, parallelism, and perpendicularity are mentioned. These limitations are all in view of the current technological level, rather than absolute strict definitions in the mathematical sense, allowing for a small amount of deviation. Approximations to symmetry, equality, parallelism, perpendicularity, etc. are all acceptable. For example, when it is said that A is parallel to B, it means that A is parallel to B or approximately parallel to B, and the included angle between A and B can be between 0 degrees and 10 degrees. When it is said that A is perpendicular to B, it means that A is perpendicular to B or approximately perpendicular to B, and the included angle between A and B can be between 80 degrees and 100 degrees.
[0066] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A vibration isolation device applicable to slender communication equipment in a low and enclosed space, characterized in that, It includes a flexible vibration isolation module. The flexible vibration isolation module includes a protective housing (1) and a first vibration isolation unit (3) arranged inside the protective housing (1). The protective housing (1), the first vibration isolation unit (3), and the slender communication device (2) to be vibration-isolated are connected in sequence, so that the slender communication device (2) is horizontally suspended inside the protective housing (1). The first vibration isolation unit (3) is arranged obliquely with respect to the horizontal plane, is arranged in pairs on both sides of the slender communication device (2), and adjacent first vibration isolation units (3) on the same side are inclined in opposite directions. The height of the connection point between the first vibration isolation unit (3) and the slender communication device (2) is lower than the centroid height of the slender communication device (2).
2. A vibration isolation device applicable to slender communication equipment in a low and enclosed space, characterized in that, It includes a flexible vibration isolation module. The flexible vibration isolation module includes a protective housing (1), a suspended U-shaped groove (4), a first vibration isolation unit (3), and a second vibration isolation unit (5) arranged inside the protective housing (1). The first vibration isolation unit (3) connects the slender communication device (2) to be vibration-isolated with the suspended U-shaped groove (4), so that the slender communication device (2) is horizontally suspended inside the suspended U-shaped groove (4). The second vibration isolation unit (5) is arranged obliquely with respect to the horizontal plane, is arranged in pairs on both sides of the suspended U-shaped groove (4), and adjacent second vibration isolation units (5) on the same side are inclined in opposite directions. The second vibration isolation unit (5) connects the suspended U-shaped groove (4) with the protective housing (1), so that the notch of the suspended U-shaped groove (4) faces downward and is horizontally suspended inside the protective housing (1). The connection point between the suspended U-shaped groove (4) and the second vibration isolation unit (5) is lower than the centroid height of the slender communication device (2).
3. The vibration isolation device according to claim 2, characterized in that, The first vibration isolation units (3) are arranged in columns directly above the central axis of the slender communication device (2), and adjacent first vibration isolation units (3) are inclined in opposite directions.
4. The vibration isolation device according to claim 3, characterized in that, One end of the first vibration isolation unit (3) penetrates into and is fixed to the bottom surface of the suspended U-shaped groove (4), and the other end is connected to the slender communication device (2) to form an inverted pendulum mechanism.
5. The vibration isolation device according to claim 2, characterized in that, Both the first vibration isolation unit (3) and the second vibration isolation unit (5) are of strip-shaped structures.
6. A vibration isolation device applicable to slender communication equipment in a low and enclosed space, characterized in that, It includes a protective housing (1) and a flexible vibration isolation module. The flexible vibration isolation module is located inside the protective housing (1) and includes a first vibration isolation unit (3), a second vibration isolation unit (5), and a vibration damping float (6). The protective housing (1), the vibration damping float (6), and the slender communication device (2) to be vibration-isolated are coaxially sleeved from outside to inside in sequence. The second vibration isolation unit (5) connects the vibration damping float (6) with the protective housing (1) to suspend the vibration damping float (6) inside the protective housing (1). A plurality of the first vibration isolation units (3) connect the slender communication device (2) with the vibration damping float (6) to suspend the slender communication device (2) inside the vibration damping float (6).
7. The vibration isolation device according to claim 6, wherein The second vibration isolation unit (5) is an annular structure, which is sleeved on the vibration reduction buoy (6), and its circumferential outer wall abuts against the protective shell (1), so that the vibration reduction buoy (6) and the protective shell (1) are coaxially arranged.
8. The vibration isolation device according to claim 6, wherein, The first vibration isolation unit (3) is a U-shaped strip structure, and both ends of the vibration reduction buoy (6) are provided with paired fixing holes in the circumferential direction; the two ends of each of the U-shaped strip structures pass through corresponding fixing holes and are radially connected to the slender communication device (2); and / or, three U-shaped strip structures are provided at each end of the vibration reduction buoy (6), and the angle between adjacent U-shaped strip structures is 120°.
9. The vibration isolation device according to any one of claims 1-8, characterized in that, It also includes a pair of vibration isolation bases (7), wherein the vibration isolation bases (7) are provided with a protrusion (71), and a groove (72) is correspondingly provided on the other side facing away from the protrusion (71), the protective shell (1) is fixed on the protrusion (71), and the outer edge end surface of the groove (72) is connected to an external carrier; and / or the material of the flexible vibration isolation module is a flexible non-magnetic material.
10. A vibration isolation device applicable to slender communication equipment in a low and enclosed space, characterized in that, The vibration isolation device is formed by combining at least two vibration isolation devices according to any one of claims 1 to 9, and is used to isolate vibrations for a plurality of slender communication devices at the same time.