Polyurethane foaming vibration isolator with waterproof layer

Abstract

The polyurethane foaming vibration isolation pad with the waterproof layer comprises a protective layer, a vibration isolation layer and the waterproof layer, the protective layer is a fabric layer with a flexible interface formed by a woven structure, and the vibration isolation layer is a polyurethane foaming layer which is of a honeycomb structure and has the functions of absorbing vibration energy and buffering impact loads. The upper end face of the waterproof layer is of a wavy structure with wave crests and wave troughs, and the bottom face and the top face of the vibration isolation layer react with the upper end face of the waterproof layer and the bottom face of the protective layer to form an integrated structure without interface layering. The protective layer, the vibration isolation layer and the waterproof layer are combined into a whole to form the vibration isolation pad, the vibration isolation pad has the functions of wear resistance, puncture resistance, vibration absorption and water resistance, the performance limitation of a single material is broken through, the construction procedures are reduced, the construction period is shortened, the construction efficiency is improved, and the vibration isolation pad is suitable for various track foundations, building foundations, precise instrument bases and the like. The modular design supports rapid laying, and the cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of rail transit technology, specifically relating to a polyurethane foam vibration isolation pad with a waterproof layer. Background Technology

[0002] With the development of rail transit systems towards higher speeds and greater density, vibration control has become a core issue in rail engineering and building safety. Low-frequency vibrations generated by high-speed railways and subways not only affect the track's ability to maintain geometric position but also propagate through the foundation to surrounding buildings, leading to problems such as inaccurate precision instruments and accumulated fatigue in building structures. Current vibration isolation systems generally employ a layered treatment strategy, with vibration isolation pads playing a crucial role in blocking the transmission path of track vibrations as the direct load-bearing body. However, existing vibration isolation pad construction has significant drawbacks: contractors need to pre-lay waterproof membranes (such as HDPE waterproof cloth) or spray polyurea waterproof coatings on the base surface. These additional procedures increase construction costs and extend the construction period due to the overlapping work of multiple trades. Therefore, to solve these technical problems, it is necessary to improve the vibration isolation pads. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a polyurethane foam vibration isolation pad with a waterproof layer. The vibration isolation pad is formed by combining a protective layer, a vibration isolation layer and a waterproof layer into one piece, which respectively undertake the functions of wear resistance and puncture resistance, vibration absorption and waterproofing. It breaks through the performance limitations of single materials, reduces construction procedures, shortens the construction cycle and improves construction efficiency. The polyurethane foam layer absorbs vibration energy and improves the vibration attenuation rate. The polyurethane waterproof layer is resistant to acid and alkali corrosion and has a wide temperature range. It is suitable for various track foundations, building foundations, precision instrument bases, etc. The structure is simple, the design is novel, and the modular design supports rapid laying and reduces costs.

[0004] The technical solution adopted in this utility model is: a polyurethane foam vibration isolation pad with a waterproof layer, comprising a protective layer, a vibration isolation layer and a waterproof layer. The protective layer is a woven fabric layer with a flexible interface. The vibration isolation layer is a polyurethane foam layer with a honeycomb structure that has the function of absorbing vibration energy and buffering impact loads. The upper surface of the waterproof layer has a wave-like structure with crests and troughs. The bottom and top surfaces of the vibration isolation layer react with the upper surface of the waterproof layer and the bottom surface of the protective layer, respectively, to form an integrated structure without interface layers.

[0005] The thickness of the protective layer ranges from 2mm to 5mm.

[0006] Furthermore, the waterproof layer is a polyurethane waterproof layer.

[0007] Furthermore, the thickness range of the minimum position of the waterproof layer is 1mm to 3mm, and the thickness range of the maximum position of the waterproof layer is 5mm to 8mm.

[0008] Furthermore, the thickness of the vibration isolation layer ranges from 10mm to 30mm.

[0009] Advantages of this utility model compared to the prior art:

[0010] 1. This technical solution uses a vibration isolation pad formed by combining a protective layer, a vibration isolation layer and a waterproof layer into one, which respectively undertakes the functions of wear resistance and puncture resistance, vibration absorption and waterproofing, breaking through the performance limitations of single materials, reducing construction procedures, shortening the construction cycle and improving construction efficiency.

[0011] 2. The polyurethane foam layer in this technical solution absorbs vibration energy and improves the vibration attenuation rate. The polyurethane waterproof layer is resistant to acid and alkali corrosion and has a wide temperature range, making it suitable for various track foundations, building foundations, precision instrument bases, etc.

[0012] 3. This technical solution has a simple structure, novel design, and modular design that supports rapid deployment and reduces costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0014] The following will be based on the embodiments of this utility model. Figure 1 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] It should be noted that, unless otherwise stated herein, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0017] Polyurethane foam vibration damping pads with a waterproof layer, such as Figure 1 As shown, the structure includes a protective layer 1, a vibration isolation layer 2, and a waterproof layer 3. The protective layer 1 is a woven fabric layer with a flexible interface. The vibration isolation layer 2 is a polyurethane foam layer with a honeycomb structure that absorbs vibration energy and buffers impact loads. The upper surface of the waterproof layer 3 has a wave-like structure with crests and troughs. The bottom and top surfaces of the vibration isolation layer 2 react with the upper surface of the waterproof layer 3 and the bottom surface of the protective layer 1, respectively, to form an integrated structure without interface layers. In the above structure, the protective layer 1, the vibration isolation layer 2, and the waterproof layer 3 are combined into a vibration isolation pad, which respectively undertakes the functions of wear resistance and puncture resistance, vibration absorption, and waterproofing. This overcomes the performance limitations of single materials, reduces construction procedures, shortens the construction cycle, and improves construction efficiency.

[0018] The protective layer 1 is made of high-strength synthetic fiber and has a thickness ranging from 2mm to 5mm. The protective layer 1 reduces frictional damage between the track foundation, building foundation, precision instrument base and vibration isolation pad, enhances surface wear resistance and has a puncture-proof function.

[0019] The waterproof layer 3 is a polyurethane waterproof layer; specifically, the thickness of the waterproof layer 3 at its minimum position ranges from 1mm to 3mm, and the thickness at its maximum position ranges from 5mm to 8mm. The upper surface of the waterproof layer 3 has a wavy structure. When the waterproof layer 3 and the vibration isolation layer 2 are integrally formed, a coupling agent on the upper part of the waterproof layer 3 reacts synchronously with the polyurethane chemical reaction in the vibration isolation layer 2 to form an integral structure. During the flow of the polyurethane material in the vibration isolation layer 2, it will embed into the surface of the protective layer 1 to form an integral structure, thereby improving the reliability of the connection and eliminating the hidden dangers of delamination quality.

[0020] The thickness of the vibration isolation layer 2 ranges from 10mm to 30mm. It is made of closed-cell foamed polyurethane material and absorbs vibration energy and buffers impact loads through a honeycomb structure.

[0021] In the above structure, the protective layer 1 is first directly attached to the surface of the incompletely cured polyurethane foam layer. After the polyurethane foam layer is completely cured, the fabric in the protective layer 1 is tightly bonded to the polyurethane foam layer. At the same time, during the curing process of the foam layer, a coupling agent on the upper part of the waterproof layer 3 reacts synchronously with the polyurethane chemical reaction of the vibration isolation layer 2 to form an integral whole.

[0022] This technical solution features a polyurethane foam layer that absorbs vibration energy and improves vibration attenuation rate. The polyurethane waterproof layer is resistant to acid and alkali corrosion and has a wide temperature range, making it suitable for various track foundations, building foundations, precision instrument bases, etc. It has a simple structure, novel design, and modular design that supports rapid installation and reduces costs.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Polyurethane foamed vibration isolation mat with a waterproof layer, characterized in that: It comprises a protective layer (1), a vibration isolation layer (2) and a waterproof layer (3), the protective layer (1) is a fabric layer with a woven structure to form a flexible interface, the vibration isolation layer (2) is a polyurethane foaming layer with a honeycomb structure to absorb vibration energy and buffer impact load, the upper end surface of the waterproof layer (3) is a wavy structure with wave crests and wave troughs, the bottom surface and the top surface of the vibration isolation layer (2) are respectively reacted with the upper end surface of the waterproof layer (3) and the bottom surface of the protective layer (1) to form an integrated structure without interface delamination.

2. Polyurethane foamed vibration insulating mat with a waterproof layer according to claim 1, characterized in that: The thickness of the protective layer (1) ranges from 2mm to 5mm.

3. The polyurethane foamed vibration insulating mat with a waterproof layer according to claim 1, characterized in that: The waterproof layer (3) is a polyurethane waterproof layer.

4. The polyurethane foamed vibration insulating mat with a waterproof layer according to claim 1, characterized in that: The thickness of the minimum position of the waterproof layer (3) ranges from 1mm to 3mm, and the thickness of the maximum position of the waterproof layer (3) ranges from 5mm to 8mm.

5. Polyurethane foamed vibration insulating mat with a water repellent layer according to any one of claims 1-4, characterized in that: The thickness of the vibration isolation layer (2) ranges from 10mm to 30mm.

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