Three-way limiting type sound barrier vibration isolation support

Abstract

The invention discloses a three-way limiting type sound barrier vibration isolation support, and belongs to the technical field of building vibration reduction and isolation. The support comprises a vibration isolation rubber support upper connecting plate, a vibration isolation rubber support lower connecting plate and a vibration isolation rubber support body formed by overlapping and vulcanizing a plurality of layers of steel plates and rubber. The innovation lies in that a horizontal limiting mechanism is arranged between the upper connecting plate and the lower connecting plate, the mechanism is composed of an inner anti-shearing frame and an outer anti-shearing frame, a friction pair is formed by a polytetrafluoroethylene plate and a stainless steel plate on the mechanism, and horizontal limiting and sound bridge blocking are achieved; the horizontal limiting mechanism is further provided with a vertical limiting mechanism composed of a limiting guide groove and an anti-shearing bolt. The upper connecting plate is provided with a pre-pressing limiting mechanism enabling the support body to be in a pre-compression state. Horizontal and vertical limiting functions are integrated, horizontal vibration and vertical vibration are effectively isolated, meanwhile, a noise transmission path is cut off, and the comfort and safety of building structures such as a subway upper cover are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of building anti-seismic technology, and relates to a three-way limiting sound resistance and vibration isolation support. BACKGROUND

[0002] China is one of the countries with strong seismic activity in the world. Rubber isolation bearings are widely used in various building structures, highway bridges and structural reinforcement. The multiple steel plates and multiple rubber layers are alternately and well bonded, and have good horizontal performance, damping coefficient, vertical performance and vertical bearing capacity and a series of advantages. With the emergence of more and more rail transit, the mode of overlying buildings of the subway is more and more, the vehicle-induced vibration caused by the subway brings vertical vibration to the overlying buildings of the subway, thereby affecting the comfort and causing noise and other influences. The current rubber isolation bearing can effectively isolate the horizontal vibration caused by the earthquake, but the vertical vibration reduction and isolation capacity of the rubber isolation bearing is limited, and the transmission of noise cannot be blocked. Therefore, the deficiency of the isolation rubber bearing limits the use range and popularization and application of the isolation rubber bearing. SUMMARY

[0003] The present application provides a three-way limiting sound resistance and vibration isolation support, which can have vertical vibration reduction and isolation capacity while not affecting the vertical bearing capacity function of the rubber vibration isolation support, and achieve three-way limiting sound resistance and vibration isolation.

[0004] According to the technical scheme of the present application: a three-way limiting sound resistance and vibration isolation support, which comprises a vibration isolation rubber support upper connecting plate, a vibration isolation rubber support body and a vibration isolation rubber support lower connecting plate, the vibration isolation rubber support upper connecting plate and the vibration isolation rubber support body and the vibration isolation rubber support lower connecting plate and the vibration isolation rubber support body are connected by connecting bolts respectively, characterized in that: The vibration isolation rubber support body is formed by alternately and well bonding and vulcanizing multiple steel plates and multiple rubber layers; A horizontal limiting mechanism is arranged between the vibration isolation rubber support upper connecting plate and the vibration isolation rubber support lower connecting plate, the horizontal limiting mechanism comprises an outer shear frame and an inner shear frame, the inner shear frame is fixedly connected with the vibration isolation rubber support upper connecting plate, the outer shear frame is fixedly connected with the vibration isolation rubber support lower connecting plate, the inner shear frame is arranged in the cavity of the outer shear frame, a stainless steel plate is mounted on the inner wall of the outer shear frame, a polytetrafluoroethylene plate is arranged on the outer surface of the inner shear frame, and the polytetrafluoroethylene plate and the stainless steel plate form a friction pair; A vertical limiting mechanism is arranged on the horizontal limiting mechanism, the vertical limiting mechanism comprises a limiting guide groove opened on the outer shear frame and a shear bolt mounted on the inner shear frame, and the head of the shear bolt is arranged in the limiting guide groove; The upper connecting plate is provided with a pre-compression limiting mechanism, which includes a pre-compression limiting bolt and a limiting plate. The pre-compression limiting bolt passes through the pre-compression limiting plate and is installed in the threaded hole of the upper connecting plate, so that the vibration isolation rubber support body is in a pre-compression state.

[0005] As a further improvement of the present invention, the outer shear frame and the inner shear frame of the horizontal limiting mechanism restrict each other, limiting the horizontal shear movement of the vibration isolation rubber bearing body, so that the vibration isolation rubber bearing body only performs vertical vibration reduction.

[0006] As a further improvement of the present invention, the polytetrafluoroethylene plate and the stainless steel plate of the friction pair have a low coefficient of friction, which is used to block sound bridges and prevent noise caused by vibration from being transmitted to the upper building structure.

[0007] As a further improvement of the present invention, the pre-compression of the pre-compression limiting mechanism can preemptively offset the vertical compression displacement caused by the mass of the upper structure of the vibration isolation rubber support body, while increasing elasticity and stability under vibration or impact, and increasing fatigue life.

[0008] As a further improvement of the present invention, the support body is made of high-performance rubber, which has a low vertical vibration isolation frequency.

[0009] The technical advantages of this invention are as follows: the rubber bearing adopts a simple and efficient structural design. Based on the ordinary seismic isolation rubber bearing which uses multiple layers of steel plates and multiple layers of rubber in alternating layers, the thick rubber is used to optimize the structural design, so that the rubber bearing as a whole has the function of vertical vibration control.

[0010] The horizontal limiting mechanism of this rubber bearing is equipped with a friction pair consisting of a polytetrafluoroethylene plate and a stainless steel plate. This friction pair combination has a low coefficient of friction, which does not affect the vertical vibration deformation of the product. At the same time, it also acts as a sound bridge barrier, preventing noise from vibration from being transmitted to the upper building structure.

[0011] This rubber bearing adopts a three-way limiting design. The horizontal limiting mechanism provides bidirectional horizontal limiting, which restricts the horizontal shearing motion of the thick-walled rubber bearing, ensuring that the thick-walled rubber bearing only performs vertical vibration damping. At the same time, the horizontal limiting mechanism is equipped with a vertical limiting mechanism, with limiting guide grooves, which serve to limit vertical movement, resist tension, and prevent overturning.

[0012] The rubber bearing is designed with a pre-compression limiting mechanism. After a certain pressure is applied vertically to the product, the pressure is locked by the pre-compression limiting mechanism. Pre-compression can not only offset the vertical compression displacement caused by the mass of the upper structure of the bearing in advance, but also better maintain elasticity and stability under the action of vibration or impact, and increase fatigue life.

[0013] The high-performance rubber used in this rubber bearing can effectively dissipate vibration energy, has the advantage of low vertical vibration isolation frequency, more effectively controls low-frequency vibration, and has excellent aging performance, simple maintenance, and long service life. Attached Figure Description

[0014] Fig. 1 This is a schematic diagram of the internal structure of the present invention.

[0015] Fig. 2 This is a side view of the present invention.

[0016] Fig. 3 This is a perspective view of the present invention. Detailed Implementation

[0017] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0018] 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. The described embodiments are merely 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 scope of protection of the present invention.

[0019] Figs. 1-3 The components include an upper connecting plate 1 for the vibration isolation rubber bearing, a vibration isolation rubber bearing body 2, a horizontal limiting mechanism 3, a polytetrafluoroethylene plate 3.1, a stainless steel plate 3.2, a shear bolt 3.3, a vertical limiting mechanism 4, a lower connecting plate 5 for the vibration isolation rubber bearing, a preload limiting mechanism 6, a preload limiting bolt 6.1, and a limiting guide groove 7.

[0020] like Figs. 1-3 As shown, this invention is a three-dimensional limiting type acoustic damping vibration isolation bearing. The overall structure of the bearing mainly consists of three core components: an upper connecting plate 1 for the vibration isolation rubber bearing, a body 2 for the vibration isolation rubber bearing, and a lower connecting plate 5 for the vibration isolation rubber bearing, all connected by bolts. Specifically, the upper connecting plate 1 and the body 2, and the lower connecting plate 5 and the body 2, are respectively connected by connecting bolts. The upper connecting plate 1 and the lower connecting plate 5 are used to connect with embedded parts in the building structure, fixing the entire bearing into the building structure.

[0021] The vibration isolation rubber bearing body 2 is an integral bearing formed by alternating layers of steel plates and multiple layers of rubber through a hot vulcanization process and excellent bonding. As a preferred embodiment, the vibration isolation rubber bearing body 2 adopts an optimized structural design of "thick-walled rubber" and selects high-performance rubber materials, which can effectively dissipate vibration energy and has the characteristics of low vertical vibration isolation frequency, excellent aging performance, and long service life.

[0022] A horizontal limiting mechanism 3 is provided between the upper connecting plate 1 and the lower connecting plate 5 of the vibration isolation rubber bearing. This horizontal limiting mechanism 3 is one of the key components for achieving three-way limiting, and it consists of an outer shear frame and an inner shear frame. The inner shear frame is fixedly connected to the upper connecting plate 1 of the vibration isolation rubber bearing, and the outer shear frame is fixedly connected to the lower connecting plate 5 of the vibration isolation rubber bearing. The inner shear frame is fitted within the cavity of the outer shear frame, allowing the inner and outer frames to move relative to each other while being mutually constrained. Specifically, a stainless steel plate 3.2 is installed on the inner wall of the outer shear frame, and a polytetrafluoroethylene (PTFE) plate 3.1 is installed on the outer surface of the inner shear frame. The PTFE plate 3.1 and the stainless steel plate 3.2 are tightly fitted together, forming a friction pair with a low coefficient of friction. This friction pair not only ensures low friction during relative sliding between the inner and outer frames, preventing any impact on the vertical vibration deformation of the vibration-damping rubber bearing body 2, but more importantly, it cuts off the path for sound wave transmission through direct metal-to-metal contact, playing a crucial role in blocking the "sound bridge" and effectively preventing noise from vibration from being transmitted to the upper building structure. This mechanism restricts the horizontal shearing motion of the vibration-damping rubber bearing body 2, allowing it to primarily perform vertical vibration damping, thus achieving bidirectional horizontal limiting.

[0023] A vertical limiting mechanism 4 is further provided on the horizontal limiting mechanism 3. Specifically, a vertical limiting guide groove 7 is provided on the outer shear frame, and a shear bolt 3.3 is correspondingly installed on the inner shear frame, with the head of the shear bolt 3.3 placed in the limiting guide groove 7. When the support is subjected to vertical tension or has a tendency to overturn, the head of the shear bolt 3.3 will contact the upper and lower end faces of the limiting guide groove 7, thereby playing the roles of vertical limiting, tensile resistance, and anti-overturning, and realizing vertical limiting.

[0024] A pre-compression limiting mechanism 6 is also provided on the connecting plate 1 of the vibration isolation rubber bearing. This mechanism includes a pre-compression limiting bolt 6.1 and a limiting plate. During installation, a vertical pressure is first applied to the vibration isolation rubber bearing body 2 to compress it by a predetermined amount of deformation. Then, the pre-compression limiting bolt 6.1 is passed through the limiting plate and screwed into the pre-set threaded hole on the connecting plate 1 of the vibration isolation rubber bearing and locked. In this way, the vibration isolation rubber bearing body 2 is always kept in the pre-compressed state. This pre-compression design can offset part of the vertical compression displacement caused by the mass of the building structure above the bearing in advance. At the same time, when encountering vibration or impact forces in subsequent use, it can make the bearing better maintain its elasticity and stability, significantly increasing its fatigue life.

[0025] The working principle of this invention is as follows: When continuous vertical vibrations or seismic waves generated by subway traffic are transmitted to the support, the vibration isolation rubber support body 2 mainly undergoes vertical vibration compression deformation due to the restriction of the horizontal limiting mechanism 3. During this process, the vibration isolation rubber support body 2 effectively consumes and isolates vibration energy through its thick rubber structure and high-performance rubber material, ensuring the comfort of people inside the building. At the same time, the friction pair composed of the polytetrafluoroethylene plate 3.1 and the stainless steel plate 3.2 in the horizontal limiting mechanism 3 effectively blocks the sound propagation path and reduces noise transmitted to the upper building structure. The vertical limiting mechanism 4 ensures the safety and stability of the support under complex loads, while the preload state further optimizes its dynamic performance and service life.

[0026] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A three-way limited sound insulation bearing, comprising an upper connecting plate (1), a body (2) and a lower connecting plate (5), the upper connecting plate (1) and the body (2) and the lower connecting plate (5) and the body (2) are connected by connecting bolts, characterized in that: the body (2) is formed by alternately stacking and bonding multiple layers of steel plates and multiple layers of rubber and vulcanization; a horizontal limiting mechanism (3) is arranged between the upper connecting plate (1) and the lower connecting plate (5), the horizontal limiting mechanism (3) comprises an outer shear frame and an inner shear frame, the inner shear frame is fixedly connected with the upper connecting plate (1), the outer shear frame is fixedly connected with the lower connecting plate (5), the inner shear frame is arranged in the cavity of the outer shear frame, a stainless steel plate (3.2) is mounted on the inner wall of the outer shear frame, a polytetrafluoroethylene plate (3.1) is arranged on the outer surface of the inner shear frame, and the polytetrafluoroethylene plate (3.1) and the stainless steel plate (3.2) form a friction pair; a vertical limiting mechanism (4) is arranged on the horizontal limiting mechanism (3), the vertical limiting mechanism (4) comprises a limiting guide groove (7) formed on the outer shear frame and a shear bolt (3.3) mounted on the inner shear frame, and the head of the shear bolt (3.3) is arranged in the limiting guide groove (7); a pre-pressing limiting mechanism (6) is arranged on the upper connecting plate (1), the pre-pressing limiting mechanism (6) comprises a pre-pressing limiting bolt (6.1) and a limiting plate, the pre-pressing limiting bolt (6.1) is mounted in the threaded hole of the upper connecting plate (1) through the pre-pressing limiting plate, so that the body (2) is in a pre-compressed state. The outer shear frame and the inner shear frame of the horizontal limiting mechanism (3) restrict the horizontal shear motion of the body (2) and make the body (2) only perform vertical vibration reduction. The polytetrafluoroethylene plate (3.1) and the stainless steel plate (3.2) of the friction pair have a low friction coefficient, which is used to block the sound bridge and avoid the transmission of noise caused by vibration to the upper building structure. The pre-compression of the pre-pressing limiting mechanism (6) can offset the vertical compression displacement caused by the mass of the upper structure of the body (2) in advance, increase the elasticity and stability under the action of vibration or impact force, and increase the fatigue life. The body (2) adopts high-performance rubber and has a low vertical vibration frequency.

2. The three-way limited type sound isolation support according to claim 1, wherein: ​ 3. The three-way limited type sound isolation support according to claim 1, wherein: ​ 4. The three-way limited type sound isolation support according to claim 1, wherein: ​ 5. The three-way limited type acoustic vibration isolation mount of claim 1, wherein: ​

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