Ultralow frequency vibration isolator

Abstract

The utility model discloses an ultralow frequency vibration isolator, which belongs to the technical field of vibration isolators and comprises a damper used for providing buffering and damping, the top of the damper is fixedly connected with a top plate used for bearing, and the bottom of the damper is fixedly connected with a bottom plate used for connecting and supporting; the buffering assembly comprises a spring used for providing buffering, damping and resetting; the connecting assembly comprises a circular ring used for adjusting the position of the top plate so as to adjust the tension degree; the adjusting assembly comprises a vertical plate used for fixing the circular ring, after the device is fixed and the top plate receives gravity, a damper can be driven to search, then a spring is compressed through two sets of connecting plates, buffering is conducted under the action of the spring and the damper, and the purpose of shock absorption is achieved; and the initial height of the top plate can be adjusted by adjusting the height of the circular ring, so that the tensioning degree of the device can be adjusted, and the universality of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of vibration isolator, concretely refers to a kind of ultra-low frequency vibration isolator. BACKGROUND

[0002] So-called vibration isolation refers to inserting appropriate vibration isolation device between vibration source and isolated system to isolate the direct transmission of vibration, and its essence is to install a vibration isolator between vibration source and isolated system. From the perspective of energy, vibration isolation is to change the energy spectrum structure of vibration source to isolated system to reduce the energy through frequency to suppress vibration. Low-frequency vibration isolation is still a research hotspot and difficulty in the field of vibration engineering. Vibration isolation is mainly divided into passive vibration isolation and active vibration isolation. Due to the complexity of active vibration isolation structure and high cost, it is less used at present. For example, active suspension is mainly used in high-end cars, so passive vibration isolation is a common vibration isolation method. Because the lower the natural frequency is, the smaller the initial vibration isolation frequency is. However, due to the low natural frequency, the system stiffness will decrease, resulting in large static displacement, so passive vibration isolation usually encounters the contradiction between large static displacement and low natural frequency. Therefore, linear vibration isolation system cannot meet the vibration isolation demand of low frequency or ultra-low frequency. In order to realize full-band vibration isolation from low frequency to high frequency, the concept of nonlinear vibration isolation device has attracted widespread attention, and many have been applied in the field of engineering vibration isolation. Quasi-zero stiffness vibration isolation device has attracted widespread attention due to its high static low dynamic stiffness characteristics. The high static stiffness of quasi-zero stiffness vibration isolation device makes it have large carrying capacity, and the low dynamic stiffness characteristic makes it have good vibration isolation effect for low frequency and ultra-low frequency. However, the current quasi-zero stiffness vibration isolator has the shortcomings of large structure, inconvenient use and inconvenient installation.

[0003] In order to solve the above problems, through retrieval, the existing published patent (application number: CN201921131207.7) a compact ultra-low frequency nonlinear quasi-zero stiffness vibration isolator, which proposes "including vibration isolation carrier, screw rod, nut, inner magnetic ring, wave spring, lower slider, outer magnetic ring and upper slider, the vibration isolation carrier includes outer cylinder and inner cylinder coaxial to the center of the inner cavity, the screw rod is connected to the axial center of the outer cylinder, the nut clamps the inner magnetic ring and is connected to the screw rod, the wave spring is placed at the bottom of the annular area between the inner cylinder and the outer cylinder, the lower slider, the outer magnetic ring and the upper slider are sequentially and slidably sleeved on the vibration isolation carrier above the wave spring, the inner magnetic ring and the outer magnetic ring are axially magnetized. The wave spring provides positive stiffness, and can save 50% of the space compared with general spiral spring. When the upper slider is subjected to axial force, the outer magnetic ring produces relative displacement relative to the inner magnetic ring, and the inner and outer magnetic rings form a negative stiffness mechanism. The vibration isolator forms a compact structure through the matching of the vibration isolation carrier and the wave spring, and can be applied to application occasions with restricted installation space".

[0004] But in use, the pressure of the spring cannot be adjusted, and the tension cannot be adjusted, so that the spring has certain limitations in use. Utility model content

[0005] The utility model solves the technical problem in the above background art, and provides an ultralow frequency vibration isolator.

[0006] To solve the above technical problem, the utility model provides the technical scheme as follows:

[0007] An ultralow frequency vibration isolator comprises:

[0008] A damper is used for providing buffering and shock absorption, the top of the damper is fixedly connected with a top plate used for bearing, and the bottom of the damper is fixedly connected with a bottom plate used for connection and support;

[0009] A buffering assembly comprises a spring used for providing buffering and shock absorption and resetting;

[0010] A connecting assembly comprises a circular ring used for adjusting the position of the top plate and then adjusting the tension;

[0011] An adjusting assembly comprises a vertical plate used for fixing the circular ring.

[0012] Preferably, the buffering assembly further comprises:

[0013] A fixed rod is fixedly connected to the bottom plate and used for mounting the spring;

[0014] A limiting ring is fixedly connected above the fixed rod and used for limiting and preventing the top plate from being separated;

[0015] A connecting plate is fixedly connected below the top plate and used for connecting the spring;

[0016] A groove is arranged below the groove and used for providing a sliding space for the limiting ring and the fixed rod when the top plate moves.

[0017] Preferably, the fixed rod is provided with four groups, the connecting plate is in L shape, the connecting plate is provided with two groups, the spring is sleeved on the fixed rod, one end of the spring is fixedly connected below the connecting plate, and the other end of the spring is fixedly connected to the bottom plate.

[0018] Preferably, the connecting assembly further comprises:

[0019] A sleeve ring is sleeved on the fixed rod;

[0020] A horizontal rod is fixedly connected to the sleeve ring at two ends;

[0021] A connecting rod is fixedly connected below the horizontal rod, and one end of the connecting rod is fixedly connected to the circular ring.

[0022] The connecting rod is in the shape of L, the connecting rod is slid on the connecting plate, and the circular ring is sleeved on the damper.

[0023] Preferably, the adjusting assembly further comprises:

[0024] The bolt is rotatably connected in a groove provided on the bottom plate and is used to drive the vertical plate to move;

[0025] The extension block is fixedly connected to one side of the circular ring.

[0026] The slot is arranged on the vertical plate.

[0027] Preferably, the vertical plate is threadedly connected to the bolt, the vertical plate is slid in the groove provided on the bottom plate, four groups of the slots are provided, and the extension block penetrates the slots.

[0028] With the above structure, the utility model has the following advantages:

[0029] 1. After the device is fixed, the damper is searched under the gravity of the top plate, then the spring is compressed through the two connecting plates, and then the spring and the damper are buffered, so that the damping purpose is achieved, and the initial height of the top plate can be adjusted by adjusting the height of the circular ring, so that the tension of the device can be adjusted, and the universality of the device is improved.

[0030] 2. When the circular ring is pulled downward, the position of the damper is kept horizontal through the connecting rod, the horizontal rod and the sleeve ring, the stability is improved, and after the height of the circular ring is adjusted, the extension block is clamped into the corresponding slot by moving the vertical plate, so that the circular ring can be fixed, and the stability is further improved.

[0031] The above summary is only for the purpose of the description and is not intended to limit in any way. In addition to the above-described exemplary aspects, embodiments and features, further aspects, embodiments and features of the utility model will be readily apparent from the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

[0033] Figure 1 is a structure diagram of the ultra-low frequency vibration isolator of the utility model Figure 1 ;

[0034] Figure 2 is a structure diagram of the super low frequency vibration isolator Figure 2 ;

[0035] Figure 3 is Figure 1 A enlarged view in the

[0036] Figure 4 is Figure 1 B in the enlarged view.

[0037] As shown in the figure: 1, damper; 101, top plate; 102, bottom plate; 201, fixed rod; 202, spring; 203, limit ring; 204, connecting plate; 205, groove; 301, collar; 302, cross bar; 303, connecting rod; 304, circular ring; 401, vertical plate; 402, bolt; 403, extension block; 404, slot. DETAILED DESCRIPTION

[0038] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0039] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] The present application will be further described in detail below in conjunction with the whole text:

[0041] Embodiment 1

[0042] In conjunction with the accompanying Figures 1 to 4 , the present embodiment provides a kind of super low frequency vibration isolator, including damper 1, for providing buffer shock absorption, the top of damper 1 is fixedly connected with the top plate 101 for bearing, the bottom of damper 1 is fixedly connected with the bottom plate 102 for connection and support.

[0043] In order to achieve the arrangement of the buffer shock absorption buffer assembly, the buffer assembly includes a ring 304 for adjusting the position of the top plate 101, and further adjusting the tension, the buffer assembly further comprises: a fixed rod 201, fixedly connected to the bottom plate 102 for mounting the spring 202; Limiting ring 203, fixedly connected above the fixed rod 201 for limiting to prevent the top plate 101 from being separated; Connecting plate 204, fixedly connected below the top plate 101 for connecting the spring 202; Groove 205, arranged below the groove 205 for providing space for the limiting ring 203 and the fixed rod 201 to slide when the top plate 101 moves.

[0044] As a preferred embodiment, the fixed rod 201 is provided with four groups, the connecting plate 204 is L-shaped, the connecting plate 204 is provided with two groups, the spring 202 is sleeved on the fixed rod 201, one end of the spring 202 is fixedly connected below the connecting plate 204, and the other end of the spring 202 is fixedly connected to the bottom plate 102.

[0045] It should be noted that the diameter of the limiting ring 203 is greater than the diameter of the fixed rod 201, the diameter of the groove 205 is greater than the diameter of the limiting ring 203, so that the limiting ring 203 and the fixed rod 201 can be inserted into the groove 205 when the top plate 101 slides, the stroke of movement is increased, and the opening side of the connecting plate 204 is outside, facilitating observation of the state of the whole shock absorption.

[0046] Embodiment 2:

[0047] On the basis of embodiment 1, in order to adjust the tension of the device, a connecting assembly and an adjusting assembly are provided, the connecting assembly includes a ring 304 for adjusting the position of the top plate 101, and further adjusting the tension, the adjusting assembly includes a vertical plate 401 for fixing the ring 304.

[0048] As a preferred embodiment, the connecting assembly further comprises: a sleeve ring 301 sleeved on the fixed rod 201; a horizontal rod 302, both ends of which are fixedly connected to the sleeve ring 301; and a connecting rod 303, one end of which is fixedly connected to the ring 304 and the other end of which is fixedly connected below the horizontal rod 302.

[0049] As a preferred embodiment, the sleeve ring 301 is located between the limiting ring 203 and the connecting plate 204, the connecting rod 303 is L-shaped, the connecting rod 303 penetrates and slides on the connecting plate 204, and the ring 304 is sleeved on the damper 1.

[0050] It should be noted that the inner diameter of the sleeve ring 301 is smaller than the size of the limiting ring 203, which can drive the connecting plate 204 to descend and compress the spring 202, the connecting rod 303 is located in the middle of the horizontal rod 302, and the diameter of the ring 304 is greater than the diameter of the damper 1.

[0051] As a preferred implementation, the adjusting assembly further comprises: a bolt 402, which is rotatably connected to the groove 205 provided on the bottom plate 102 for driving the vertical plate 401 to move; an extension block 403, which is fixed to one side of the ring 304; and a slot 404, which is arranged on the vertical plate 401.

[0052] As a preferred implementation, the vertical plate 401 is threadedly connected to the bolt 402, the vertical plate 401 slides in the groove 205 provided on the bottom plate 102, the slot 404 is provided with four groups, and the extension block 403 penetrates the slot 404.

[0053] It should be noted that after the height of the ring 304 is adjusted, the extension block 403 on the ring 304 is inserted into the corresponding slot 404 to be fixed, four groups of the adjusting of the tension are enhanced, and the versatility of the device is enhanced.

[0054] The operation steps are as follows: after the device is fixed, the top plate 101 is subjected to pressure and moves downward to make the damper 1 contract and compress the spring 202 through the connecting plate 204, then the spring 202 provides buffering under the action of the spring 202 to achieve the effect of shock absorption, the bolt 402 is manually rotated to drive the vertical plate 401 to move outward, then the ring 304 is pulled to move downward, at this time, the ring 304 makes the horizontal rod 302 drive the sleeve ring 301 to move downward to compress the spring 202, at this time, the height of the top plate 101 is lowered to achieve the adjustment of the tension, after the height of the top plate 101 is adjusted, the bolt 402 is reversely rotated to push the vertical plate 401 to slide toward the direction of the ring 304, so that the extension block 403 is inserted into the corresponding slot 404 to be fixed.

[0055] The above describes the present application and its implementation, which is not limited, and the shown in the full text is only one of the implementation of the present application, and the actual structure is not limited. In general, if the ordinary skilled in the art is inspired, without departing from the creative purpose of the present application, without creative design, similar structure and examples of the technical scheme, which should belong to the protection scope of the present application.

Claims

1. An ultra-low frequency vibration isolator, characterized in that: include: A damper (1) is used to provide buffering and shock absorption, wherein the top of the damper (1) is fixedly connected to a top plate (101) for bearing, and the bottom of the damper (1) is fixedly connected to a bottom plate (102) for connection and support; A buffer assembly, including a spring (202) for providing buffering, shock absorption and resetting; A connecting assembly including a ring (304) for adjusting the position of the top plate (101) and thereby adjusting the tension; The adjustment assembly includes a vertical plate (401) for fixing the ring (304).

2. The ultra-low frequency vibration isolator according to claim 1, characterized in that: The buffer assembly further includes: A fixing rod (201) is fixed to the bottom plate (102) and is used to install a spring (202); A limiting ring (203) is fixedly connected to the upper side of the fixing rod (201) and is used for limiting the position to prevent the top plate (101) from being separated; A connecting plate (204) is fixedly connected to the bottom of the top plate (101) and is used to connect the spring (202); The groove (205) is arranged below the groove (205) and is used to provide a space for the limiting ring (203) and the fixing rod (201) to slide when the top plate (101) moves.

3. The ultra-low frequency vibration isolator according to claim 2, characterized in that: The fixing rod (201) is provided with four groups, the connecting plate (204) is L-shaped, and the connecting plate (204) is provided with two groups. The spring (202) is sleeved on the fixing rod (201), one end of the spring (202) is fixed to the bottom of the connecting plate (204), and the other end of the spring (202) is fixed to the bottom plate (102).

4. The ultra-low frequency vibration isolator according to claim 3, characterized in that: The connection component further includes: A collar (301) is sleeved on the fixing rod (201); A crossbar (302), with both ends fixed to the collar (301); The connecting rod (303) is fixedly connected to the bottom of the cross bar (302) and one end of the connecting rod (303) is fixedly connected to the ring (304).

5. The ultra-low frequency vibration isolator according to claim 4, characterized in that: The collar (301) is located between the limiting ring (203) and the connecting plate (204); the connecting rod (303) is L-shaped; the connecting rod (303) penetrates and slides on the connecting plate (204); and the circular ring (304) is sleeved on the damper (1).

6. The ultra-low frequency vibration isolator according to claim 5, characterized in that: The adjustment component also includes: The bolt (402) is rotatably connected to the groove (205) provided on the bottom plate (102) to drive the vertical plate (401) to move; An extension block (403) is fixed to one side of the ring (304); The slot (404) is arranged on the vertical plate (401).

7. The ultra-low frequency vibration isolator according to claim 6, characterized in that: The vertical plate (401) is threadedly connected to the bolt (402), and the vertical plate (401) slides in the groove (205) provided on the bottom plate (102). The slots (404) are provided in four groups, and the extension block (403) passes through the slots (404).

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