Improved top vibration isolator

Abstract

The utility model discloses an improved top vibration isolator, and belongs to the technical field of top vibration isolators. Comprising a base, a first vibration reduction assembly, a lower disc, a connecting shaft, a second vibration reduction assembly and a cover body. A bottom plate is arranged at the bottom of the base; the first vibration reduction assembly is arranged in the base and located on the bottom plate. The lower disc is arranged in the assembling space and abuts against the first vibration reduction assembly. One end of the connecting shaft is clamped on the lower disc, and the other end extends out of the base; the second vibration reduction assembly is arranged on the top face of the base and connected to the connecting shaft in a sleeving mode. The cover body wraps the second damping assembly and the base. According to the utility model, the first vibration reduction assembly comprising the mesh pad, the vibration reduction column made of rubber and the second vibration reduction assembly of the inner ring are adopted; the first vibration reduction assembly and the second vibration reduction assembly are matched with each other, vibration reduction is conducted at least in the axial direction and the radial direction of the connecting shaft, vibration is effectively reduced, and the buffering effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of top vibration isolators, and in particular relates to an improved top vibration isolator. Background Art

[0002] In the field of modern industry and technology, top vibration isolators are becoming increasingly important as key components to reduce vibration transmission and protect the safe and stable operation of equipment. However, as industrial equipment and building structures become increasingly complex, the performance requirements for top vibration isolators are also becoming higher and higher.

[0003] Traditional top vibration isolators usually use springs as vibration-damping elements at the bottom, which absorb and disperse vibration energy through the elastic deformation of the internal material. However, when dealing with high-frequency vibration, large-amplitude vibration or complex working conditions, the stiffness and damping of the top vibration isolation system are difficult to match with the stiffness and damping of the overall system, and it is difficult to adapt to changes in different vibration frequencies and amplitudes, and its vibration isolation effect is often greatly limited. In particular, the spring is prone to jamming under large-displacement vibration, causing system instability. Utility Model Content

[0004] Purpose of the utility model: In order to solve the above problems, the utility model provides an improved top vibration isolator.

[0005] Technical solution: An improved top vibration isolator, comprising:

[0006] A base, the bottom of which is provided with a bottom plate;

[0007] A first vibration reduction assembly, disposed inside the base and located on the bottom plate;

[0008] A lower plate, disposed in the assembly space and abutting against the first vibration damping assembly;

[0009] A connecting shaft, one end of which is clamped to the lower plate and the other end of which extends outside the base;

[0010] A second vibration reduction assembly is disposed on the top surface of the base and sleeved on the connecting shaft;

[0011] A cover body, wrapped around the second vibration reduction assembly and the base;

[0012] When in use, the first vibration damping assembly and the second vibration damping assembly dampen vibration of the connecting shaft at least in the axial direction and the radial direction of the connecting shaft.

[0013] In a further embodiment, the first vibration reduction assembly comprises:

[0014] A plurality of groups of mesh pads are stacked in sequence to fill the gaps between the base, the lower plate and the connecting shaft.

[0015] In a further embodiment, the first vibration reduction assembly comprises:

[0016] A plurality of groups of annular rubber bodies are sequentially arranged in the base to fill the gaps between the base, the lower plate and the connecting shaft.

[0017] In a further embodiment, the second vibration reduction assembly comprises:

[0018] A first friction plate, disposed on the top surface of the base;

[0019] An inner ring, located on the first friction plate;

[0020] N groups of vibration-damping columns are arranged in an array along the circumference of the inner ring and connected to the side surfaces of the inner ring;

[0021] The second friction plate is arranged on the top surface of the inner ring.

[0022] In a further embodiment, the vibration-damping column and the inner ring are formed integrally or separately.

[0023] In a further embodiment, the side wall of the connecting shaft abuts against the first vibration damping assembly.

[0024] In a further embodiment, the vibration damping column and the inner ring are made of rubber material.

[0025] In a further embodiment, the mesh pad is a ring-shaped structure.

[0026] In a further embodiment, the mesh pad is made of at least one of rubber and metal.

[0027] Beneficial effects: The utility model adopts a first vibration reduction component including a mesh pad, and a second vibration reduction component including a vibration reduction column and an inner ring made of rubber material; the first vibration reduction component and the second vibration reduction component cooperate with each other to reduce vibration at least in the axial and radial directions of the connecting shaft, effectively reducing vibration and improving the buffering effect;

[0028] In addition, the utility model adopts a mesh pad or a rubber body instead of a spring as a vibration-damping element, which has both rigidity and elasticity; when impact vibration occurs, the mesh pad or the rubber body will be deformed, thereby playing a damping role. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a side view of the utility model;

[0030] Figure 2 It is a cross-sectional view of the utility model;

[0031] Figure 3 It is a top view of the utility model;

[0032] Figure 4It is a cross-sectional view from another perspective of the utility model.

[0033] Figures 1 to 4 The components are marked as: base 1, bottom plate 2, first vibration damping assembly 3, lower plate 4, connecting shaft 5, second vibration damping assembly 6, first friction plate 61, inner ring 62, vibration damping column 63, second friction plate 64, cover body 7. DETAILED DESCRIPTION

[0034] Example 1

[0035] like Figures 1 to 4 As shown, this embodiment provides an improved top vibration isolator (hereinafter referred to as the present vibration isolator), comprising: a base 1, a bottom plate 2, a first vibration reduction assembly 3, a lower plate 4, a connecting shaft 5, a second vibration reduction assembly 6, and a cover 7.

[0036] The base 1 is provided with a receiving cavity, and the bottom plate 2 is assembled at the bottom of the base 1. The cover 7 is adaptively connected to the base 1, such as by snap connection, thread connection, etc. The cover 7 wraps the second vibration reduction assembly 6 and the base 1.

[0037] The first vibration reduction assembly 3 is disposed in the accommodating cavity and is located on the bottom plate 2. An assembly space is disposed in the first vibration reduction assembly 3.

[0038] Specifically, the first vibration reduction assembly 3 includes multiple groups of mesh pads, and the mesh pads have an interwoven hollow structure. Figure 2 As shown, multiple groups of mesh pads are stacked in sequence to fill the gaps between the base 1, the lower plate 4, and the connecting shaft 5. The mesh pad in this embodiment is an annular structure. The material of the mesh pad is at least one of rubber or metal. If metal is used, it is a metal mesh pad; if rubber is used, it is a rubber mesh pad; if rubber and metal are used, the metal and rubber are interwoven to obtain a metal-rubber mesh pad. The mesh pad has a certain rigidity and elasticity. In other embodiments, the first vibration damping component 3 includes multiple groups of annular rubber bodies, and the multiple groups of annular rubber bodies are Figure 2 Arrange in the base as shown.

[0039] The lower plate 4 is arranged in the assembly space, in other words, the lower plate 4 is placed on the mesh pad (or rubber body). The connecting shaft 5 is arranged vertically, one end of the connecting shaft 5 is clamped with the lower plate 4, and the other end extends outside the base 1. The connecting shaft 5 is used to connect the device that needs to be damped. The side wall of the connecting shaft 5 abuts against the mesh pad (or rubber body).

[0040] The second vibration damping assembly 6 is mounted on the top surface of the base 1 and sleeved on the connecting shaft 5. The second vibration damping assembly 6 includes a first friction plate 61, an inner ring 62, N groups of vibration damping columns 63, and a second friction plate 64. The first friction plate 61, the inner ring 62, the N groups of vibration damping columns 63, and the second friction plate 64 are all sleeved on the connecting shaft 5. The first friction plate 61 is arranged on the top surface of the base 1. The inner ring 62 is arranged on the first friction plate 61. The N groups of vibration damping columns 63 are arranged in a circumferential array along the inner ring 62 and are connected to the side of the inner ring 62. The second friction plate 64 is arranged on the top surface of the inner ring 62. The inner ring 62 and the N groups of vibration damping columns 63 are interference fitted between the first friction plate 61 and the second friction plate 64. There are gaps between adjacent vibration-damping columns 63. The gaps not only provide displacement space for the vibration-damping columns 63 when impacted, thereby more effectively releasing and dispersing the impact energy; they also allow the vibration-damping columns 63 to deform more when subjected to external forces, thereby improving their deformation capacity; this helps to better absorb and disperse the impact energy, further improving the vibration-damping effect.

[0041] In a further embodiment, the vibration-damping column 63 is formed integrally or separately with the inner ring 62. The vibration-damping column 63 and the inner ring 62 are made of rubber material so that the vibration-damping column 63 and the inner ring 62 have a rebound effect in the vertical and horizontal directions.

[0042] Here’s how it works:

[0043] The vibration isolator is used for high-altitude installation, and the connecting shaft 5 is connected to the device that needs to be vibration-damped. When in use, driven by the vibrating device, the connecting shaft 5 is displaced at least in its axial and radial directions. When the connecting shaft 5 is displaced in the axial direction, the connecting shaft 5 not only drives the lower plate 4 to collide with the mesh pad (or rubber body), but also causes the vibration-damping column 63 and the inner ring 62 to deform. Under the rebound action of the mesh pad (or rubber body), the vibration-damping column 63, and the inner ring 62, the effect of buffering and vibration reduction is achieved. Similarly, when the connecting shaft 5 is displaced in the radial direction, the vibration reduction effect is achieved under the action of the mesh pad (or rubber body), the vibration-damping column 63, and the inner ring 62.

Claims

1. An improved top vibration isolator, characterized in that: include: A base, the bottom of which is provided with a bottom plate; A first vibration reduction component is disposed inside the base and located on the bottom plate; an assembly space is provided inside the first vibration reduction component; A lower plate, disposed in the assembly space and abutting against the first vibration damping assembly; A connecting shaft, one end of which is clamped to the lower plate and the other end of which extends outside the base; A second vibration reduction assembly is disposed on the top surface of the base and sleeved on the connecting shaft; The cover body is wrapped around the second vibration reduction component and the base.

2. An improved top vibration isolator as claimed in claim 1, characterized in that: The first vibration reduction assembly comprises: A plurality of groups of mesh pads are stacked in sequence to fill the gaps between the base, the lower plate and the connecting shaft.

3. An improved top vibration isolator as claimed in claim 1, characterized in that: The first vibration reduction component includes: a plurality of groups of annular rubber bodies, which are sequentially arranged in the base to fill the gaps between the base, the lower plate and the connecting shaft.

4. An improved top vibration isolator as claimed in claim 1, characterized in that: The second vibration reduction assembly comprises: A first friction plate, disposed on the top surface of the base; An inner ring, located on the first friction plate; N groups of vibration-damping columns are arranged in an array along the circumference of the inner ring and connected to the side surfaces of the inner ring; The second friction plate is arranged on the top surface of the inner ring.

5. An improved top vibration isolator as claimed in claim 4, characterized in that: The vibration-damping column and the inner ring are formed integrally or separately.

6. An improved top vibration isolator as claimed in claim 1, characterized in that: The side wall of the connecting shaft abuts against the first vibration damping assembly.

7. An improved top vibration isolator as claimed in claim 4, characterized in that: The vibration-damping column and the inner ring are made of rubber material.

8. An improved top vibration isolator as claimed in claim 2, characterized in that: The mesh pad is a ring structure.

9. An improved top vibration isolator as claimed in claim 2, characterized in that: The mesh pad is made of at least one material of rubber or metal.

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