A rubber vibration isolator with anti-detachment function

Abstract

This utility model relates to a rubber vibration isolator with anti-detachment function, including a base plate, a central shaft in the base plate, and a rubber shell surrounding the base plate and the central shaft. An anti-detachment structure is provided between the base plate and the central shaft. The anti-detachment structure includes a base baffle, an upper baffle on the central shaft, and a lower baffle on the central shaft. The base baffle is located in the middle of the base plate and has a hole in it to prevent contact between the base plate and the middle section of the central shaft. The upper and lower baffles are located at the upper and lower ends of the central shaft, respectively. The dimensions of the upper and lower baffles are larger than the dimensions of the hole in the base plate. This utility model can provide multi-degree-of-freedom damping and can withstand certain loads under tension, compression, shear, and mixed modes to achieve vibration isolation and reduction.

Description

Technical Field

[0001] This utility model belongs to the field of vibration isolator technology, and relates to a rubber vibration isolator with anti-fall-off function. Background Technology

[0002] Vibration isolators are elastic elements that connect equipment and foundations to reduce and eliminate vibrational forces transmitted from the equipment to the foundation and vibrations transmitted from the foundation to the equipment.

[0003] With the development of my country's maritime industry, the functions of modern ships and offshore platforms are constantly being enriched, and more and more weapons, optoelectronic equipment, operating tables, and other precision equipment are being used on ships and offshore platforms. Due to the harsh natural environment of the ocean, ocean loads such as sea winds, waves, and ocean currents often cause ships and offshore platforms to undergo complex multi-degree-of-freedom movements on the sea surface. These complex multi-degree-of-freedom movements, along with the vibrations generated by the equipment itself during operation, often cause low-frequency vibrations in the equipment. Long-term low-frequency vibrations can cause the equipment on ships and offshore platforms to lose its original precision and shorten its service life. At the same time, these low-frequency vibrations can also be transmitted into the water through the hull structure, forming sound radiation, affecting the stealth of submarines and the anti-submarine capabilities of surface ships. In addition, long-term and continuous low-frequency vibration environments can also affect the health of the crew. Wire rope vibration isolators and metal spring vibration isolators have low impedance ratios and significant resonance amplification effects, but they can only reduce vibration in a single or a few degrees of freedom, and cannot meet the multi-degree-of-freedom vibration reduction requirements of shipboard equipment. Rubber vibration isolators, due to the high damping, adjustable elasticity, and corrosion resistance of the rubber material used, can well meet the multi-degree-of-freedom vibration reduction requirements of shipboard equipment. Therefore, it is essential to develop a rubber vibration isolator suitable for modern ships and offshore platforms.

[0004] Rubber vibration isolators can achieve effective vibration reduction across a wide frequency range of 5-1000Hz by adjusting the rubber formulation and structural design, with particularly outstanding performance in the low-to-mid frequency band, a common vibration frequency range for ships. Through structural design and the vulcanization of rubber and metal materials, the vertical and lateral stiffness of rubber vibration isolators can be independently adjusted, thereby achieving effective vibration reduction in six degrees of freedom across three directions. Furthermore, the nonlinear elastic properties of rubber allow rubber vibration isolators to absorb energy through large deformation when subjected to instantaneous impacts, achieving excellent impact resistance. In addition, the high damping characteristics of rubber allow rubber vibration isolators to effectively block structural sound transmission, reduce underwater radiated noise, and improve stealth.

[0005] However, most existing rubber vibration isolators can only effectively reduce vibration in a single direction and a single degree of freedom. Once they are subjected to forces and vibrations exceeding the design load limit in a non-primary force direction, they are very likely to tear and fall off, leading to the failure of the rubber vibration isolator. Summary of the Invention

[0006] The purpose of this utility model is to provide a rubber vibration isolator with anti-fall-off function, which can solve the above-mentioned problems and ensure the safety of the equipment under the condition of vibration isolator overload.

[0007] According to the technical solution provided by this utility model: a rubber vibration isolator with anti-detachment function includes a base plate, a central shaft in the base plate, and a rubber shell covering the outer periphery of the base plate and the central shaft. An anti-detachment structure is provided between the base plate and the central shaft. The anti-detachment structure includes a base baffle, an upper baffle of the central shaft, and a lower baffle of the central shaft. The base baffle is located in the middle of the base plate and has a base plate hole in it, which prevents the base plate from contacting the middle section of the central shaft. The upper baffle and the lower baffle of the central shaft are located at the upper and lower ends of the central shaft, respectively. The size of the upper baffle and the lower baffle of the central shaft is larger than the size of the base plate hole.

[0008] As a further improvement of this utility model, the base plate is processed using a rectangular metal bending part.

[0009] As a further improvement of this utility model, the two sides of the base plate are base plate connecting parts.

[0010] As a further improvement of this utility model, a threaded hole is vertically provided on the upper part of the central shaft.

[0011] As a further improvement of this utility model, the bottom plate hole is circular, and the upper baffle and lower baffle of the central shaft are rectangular, with the longer side of the rectangle being larger than the diameter of the bottom plate hole.

[0012] As a further improvement of this utility model, the rubber shell is a main rubber shell in the middle, and rubber connecting parts are provided on both sides of the lower part of the main rubber shell; a central shaft cavity is provided in the middle of the main rubber shell; a bottom plate cavity is provided in the main rubber shell and the rubber connecting parts; the bottom plate cavity is divided into an inner bottom plate cavity and an outer bottom plate cavity, the inner bottom plate cavity is located outside the central shaft cavity, and the outer bottom plate cavity is located in the rubber connecting parts; a base baffle is placed in the inner bottom plate cavity, and a bottom plate connecting part is placed in the outer bottom plate cavity.

[0013] As a further improvement of this utility model, the base plate connecting part is provided with a base plate connecting hole, and the rubber connecting part is provided with a matching rubber connecting hole.

[0014] As a further improvement of this utility model, a clearance groove is provided in the middle of the bottom of the rubber shell.

[0015] The positive and progressive effects of this application are as follows:

[0016] 1. This utility model can provide multi-degree-of-freedom damping, and can withstand certain loads in tension, compression, shear and mixed modes to achieve the functions of vibration isolation and vibration reduction.

[0017] 2. This utility model adopts a symmetrical metal frame design with a limiting function, which can ensure the safety of the equipment when the vibration isolator is overloaded. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a front view of the present invention.

[0020] Figure 3 for Figure 2 AA section view in the image.

[0021] Figure 4 This is a side view of the present invention.

[0022] Figure 5 for Figure 4 BB section view in the middle. Detailed Implementation

[0023] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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 protection scope of the present invention.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this utility model described herein. Furthermore, terms such as "comprising" and "having" mean that in addition to those already listed in "comprising" and "having," other unlisted contents may also be included; for example, a process, method, system, product, or device may include a series of steps or units, not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0026] Due to the angle of the drawing, some parts may not be drawn, but their positions and connections can be understood from the text descriptions.

[0027] like Figure 1 As shown, this utility model is a rubber vibration isolator with anti-detachment function, including a base plate 1, a central shaft 2 in the base plate 1, a rubber shell 3 wrapped around the base plate 1 and the central shaft 2, and an anti-detachment structure between the base plate 1 and the central shaft 2.

[0028] The base plate 1 adopts a rectangular metal bending symmetrical structure, which is beneficial to the strength of the vibration isolator. The two sides of the base plate 1 are the base plate connection parts 1-1.

[0029] The upper part of the central shaft 2 is vertically provided with a threaded hole 2-1, which is used to cooperate with bolts to realize the connection between the vibration isolator and the installed object.

[0030] like Figure 3 and Figure 5 As shown, the anti-detachment structure includes a base baffle 1-2, an upper baffle 2-2 on the central shaft, and a lower baffle 2-3 on the central shaft. The base baffle 1-2 is located in the middle of the base plate 1, and a bottom plate hole is formed in the base baffle 1-2 to prevent the base plate 1 from contacting the middle section of the central shaft 2. The upper baffle 2-2 and the lower baffle 2-3 on the central shaft are located at the upper and lower ends of the central shaft 2, respectively. The dimensions of the upper baffle 2-2 and the lower baffle 2-3 on the central shaft are larger than the dimensions of the bottom plate hole, thus preventing the base plate 1 and the central shaft 2 from detaching. In this embodiment, the bottom plate hole is circular, and the upper baffle 2-2 and the lower baffle 2-3 on the central shaft are rectangular, with the longer side of the rectangle being larger than the diameter of the bottom plate hole.

[0031] The rubber shell 3 has a main rubber shell 3-1 in the middle, and rubber connecting parts 3-2 are provided on both sides of the lower part of the main rubber shell 3-1. A central shaft cavity is provided in the middle of the main rubber shell 3-1 for housing the central shaft 2. A base plate cavity is provided in both the main rubber shell 3-1 and the rubber connecting parts 3-2 for housing the base plate 1; the base plate cavity consists of an inner cavity and an outer cavity, with the inner cavity located outside the central shaft cavity and the outer cavity located within the rubber connecting parts 3-2; a base baffle 1-2 is placed inside the inner cavity, and the base plate connecting part 1-1 is placed inside the outer cavity. This structure allows the impact borne by the base plate connecting part 1-1 to be transferred to the main rubber shell 3-1, while the rubber connecting parts 3-2 prevent damage to the base plate connecting part 1-1.

[0032] The base plate connecting part 1-1 is provided with a base plate connecting hole 1-3, which is used to mate with bolts to connect the vibration isolator to the installation object. Correspondingly, the rubber connecting part 3-2 is provided with a matching rubber connecting hole 3-21.

[0033] The rubber housing 3 has a relief groove 3-3 in the middle of its bottom, which improves the applicability of the vibration isolator.

[0034] The rubber housing 3 is equipped with a damping adjustment structure to adjust the vibration isolation frequency of the isolator. Specifically, such as... Figure 2 As shown, the damping adjustment structure is an adjustment groove 4, which is located on the side of the main rubber shell 3-1. The vibration isolation frequency is changed by adjusting the shape of the main rubber shell 3-1. The size and position of the adjustment groove 4 are set according to the specific application requirements.

[0035] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A rubber vibration isolator with anti-detachment function, characterized in that, It includes a base plate (1), a central shaft (2) is provided in the base plate (1), and a rubber shell (3) is wrapped around the base plate (1) and the central shaft (2). An anti-detachment structure is provided between the base plate (1) and the central shaft (2). The anti-detachment structure includes a base baffle (1-2), an upper baffle (2-2) of the central shaft, and a lower baffle (2-3) of the central shaft. The base baffle (1-2) is located in the middle of the base plate (1). A base plate hole is opened in the base baffle (1-2). The base plate hole prevents the base plate (1) from contacting the middle section of the central shaft (2). The upper baffle (2-2) of the central shaft and the lower baffle (2-3) of the central shaft are located at the upper and lower ends of the central shaft (2), respectively. The size of the upper baffle (2-2) of the central shaft and the lower baffle (2-3) of the central shaft is larger than the size of the base plate hole.

2. The rubber vibration isolator with anti-detachment function as described in claim 1, characterized in that, The base plate (1) is processed using a rectangular metal bending part.

3. The rubber vibration isolator with anti-detachment function as described in claim 1, characterized in that, The two sides of the base plate (1) are the base plate connecting parts (1-1).

4. The rubber vibration isolator with anti-detachment function as described in claim 1, characterized in that, The upper part of the central shaft (2) is vertically provided with a threaded hole (2-1).

5. The rubber vibration isolator with anti-detachment function as described in claim 1, characterized in that, The bottom plate hole is circular, and the upper baffle (2-2) and lower baffle (2-3) of the central shaft are rectangular, with the longer side of the rectangle being larger than the diameter of the bottom plate hole.

6. The rubber vibration isolator with anti-detachment function as described in claim 1, characterized in that, The rubber shell (3) has a main rubber shell (3-1) in the middle, and rubber connecting parts (3-2) are provided on both sides of the lower part of the main rubber shell (3-1); a central shaft cavity is provided in the middle of the main rubber shell (3-1); a bottom plate cavity is provided in the main rubber shell (3-1) and the rubber connecting parts (3-2); the bottom plate cavity is divided into an inner bottom plate cavity and an outer bottom plate cavity, the inner bottom plate cavity is located outside the central shaft cavity, and the outer bottom plate cavity is located in the rubber connecting parts (3-2); a base baffle (1-2) is placed in the inner bottom plate cavity, and a bottom plate connecting part (1-1) is placed in the outer bottom plate cavity.

7. The rubber vibration isolator with anti-detachment function as described in claim 1, characterized in that, The base plate connecting part (1-1) is provided with a base plate connecting hole (1-3), and the rubber connecting part (3-2) is provided with a matching rubber connecting hole (3-21).

8. The rubber vibration isolator with anti-detachment function as described in claim 1, characterized in that, The rubber shell (3) has a clearance groove (3-3) in the middle of its bottom.

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