Bridge support with vertical damping mechanism

Abstract

The utility model belongs to the technical field of bridge supports, and particularly relates to a bridge support with a vertical damping mechanism. The bridge support comprises a support body, a groove is formed in a lower support plate of the support body, a vertical damping mechanism is arranged in the groove, and the vertical damping mechanism comprises a disc spring, an elastic damping column arranged in the center of the disc spring and an elastic damping ring wrapping the disc spring; the bridge support is provided with the vertical shock absorption mechanism, the vertical / horizontal shock absorption and noise reduction performance in the support can be effectively enhanced, the service life of the support is prolonged, and the bridge support has the advantages of being simple in structure, economical and durable.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge supports, and specifically relates to a bridge support with a vertical shock absorbing mechanism. Background Art

[0002] With the rapid development of bridge projects such as high-speed railways, highways and urban overpasses in my country, the role of bridge bearings is becoming more and more important. At present, there are many types of bearing products, among which spherical bearings are gradually widely used in highway and railway bridges and construction projects due to their excellent performance of large bearing capacity, large rotation angle and long service life.

[0003] During actual use, the spherical bearing is affected by the superstructure, vehicles and other impact loads, which will cause the spherical bearing structure itself to vibrate. Especially in some stations and densely populated areas, the noise and vibration generated during the vertical pressure-bearing process of the bridge bearing will affect people's normal life and movement. This vibration is mainly caused by the vertical pressure, which will not only accelerate the wear of the bridge bearing, but also bring hidden dangers to the safe operation of the bridge. Utility Model Content

[0004] The purpose of the utility model is to provide a bridge bearing with a vertical shock absorbing mechanism, which can effectively enhance the vertical / horizontal shock absorbing and noise reduction performance inside the bearing, improve the service life of the bearing, and has the characteristics of simple structure, economy and durability.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A bridge bearing with a vertical shock absorbing mechanism is characterized in that it includes a bearing body, a lower bearing plate of the bearing body is provided with a groove, a vertical shock absorbing mechanism is provided in the groove, and the vertical shock absorbing mechanism includes a disc spring, an elastic damping column arranged in the center of the disc spring, and an elastic damping ring surrounding the disc spring.

[0007] The additional technical features of the above-mentioned bridge bearing with a vertical shock absorbing mechanism also include:

[0008] The elastic damping column or the elastic damping ring is an elastic rubber body, or the elastic damping column or the elastic damping ring is composed of a high-elastic rubber matrix and a metal stiffening plate or a metal ring stacked in the high-elastic rubber matrix;

[0009] ——A deformation gap is provided between the elastic damping column and the disc spring, and between the disc spring and the elastic damping ring, and the thickness of the elastic damping ring does not exceed the initial height of the disc spring or the elastic damping column;

[0010] ——The support body is a plate-type support body, a pot-type support body, a spherical support body or a friction pendulum support body;

[0011] The support body includes an upper support plate and a middle support plate, the lower part of the middle support plate is connected to the vertical shock absorbing mechanism, and a friction pair is arranged between the upper support plate and the middle support plate;

[0012] - The lower part of the middle support plate is placed in the groove of the lower support plate, and a sealing ring is arranged between the side of the middle support plate and the groove of the lower support plate;

[0013] - A lining plate is arranged above the middle support plate, and the friction pair comprises a first friction pair arranged between the lining plate and the upper support plate, and a second friction pair arranged between the lining plate and the middle support plate;

[0014] ——The first friction pair is a plane friction pair; the second friction pair is a spherical friction pair, which is placed between the spherical crown surface on the bottom surface of the lining plate and the spherical groove on the top surface of the middle support plate. The first friction pair and the second friction pair are both composed of stainless steel slide plates and wear-resistant plates, and the wear-resistant plates are composed of modified polytetrafluoroethylene plates and modified ultra-high molecular weight polyethylene plates.

[0015] Compared with the prior art, the bridge bearing with a vertical shock absorbing mechanism provided by the utility model has the following advantages: a groove is arranged on the lower bearing plate of the novel bearing body, and a vertical shock absorbing mechanism is arranged in the groove. The vertical shock absorbing mechanism includes a disc spring, an elastic damping column arranged in the center of the disc spring, and an elastic damping ring surrounding the disc spring. That is, the deformation effect of the disc spring and the elastic damping column (such as a rubber column) is utilized to reduce the vertical vibration. At the same time, an elastic damping ring (such as a rubber ring body) is arranged to fix the center position of the disc spring and to limit and buffer it, so as to avoid problems such as eccentric force and displacement, ensure the vertical bearing mechanics and damping deformation performance, further enhance the shock absorbing and noise reduction effect of the bearing, and extend the service life of the bridge bearing. It has the advantages of compact structure, convenient manufacturing, safety and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of a bridge support structure with a vertical shock absorbing mechanism. DETAILED DESCRIPTION

[0017] The following is a further detailed description of the bridge support structure with a vertical shock absorbing mechanism and the working principle provided by the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the present invention, unless otherwise specified, the terms "upper / middle / lower", "vertical / horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0019] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set / provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0020] like Figure 1 As shown, the bridge bearing structure with a vertical shock absorbing mechanism includes a bearing body 10, a groove 11 is arranged on the lower bearing plate 1 of the bearing body 10, a vertical shock absorbing mechanism is arranged in the groove 11, and the vertical shock absorbing mechanism includes a disc spring 21, an elastic damping column 22 arranged at the center of the disc spring 21, and an elastic damping ring 23 surrounding the disc spring 21.

[0021] Its working principle is as follows: the lower support plate 1 of the new support is provided with a groove 11 for accommodating a vertical shock absorbing mechanism, which is composed of a disc spring 21, an elastic damping column 22 located in the center, and an elastic damping ring 23 surrounding the disc spring 21. When the support is subjected to vertical load, the central elastic damping column 22 and disc spring 21 are compressed and deformed to buffer the impact of vibration, thereby reducing shock and noise. The elastic damping ring 23 limits the central component to prevent eccentric force and displacement, thereby improving the safety and stability of the vertical shock absorbing mechanism.

[0022] It should be noted that the sum of the cross-sectional areas of the central elastic damping column 22 and the disc spring 21 exceeds 4 / 5 of the load-bearing cross-sectional area of ​​the support and has a high elastic deformation performance to avoid eccentricity of the vertical shock absorbing mechanism under the action of vertical load, thereby better ensuring the vertical bearing force and center stability; the side wall of the groove 11 of the lower support plate 1 should have a certain height, which has a covering and positioning effect on the support body 10, and further prevents the center of the support from shifting.

[0023] In the above-mentioned bridge support structure with vertical shock absorbing mechanism,

[0024] ——Preferably, the elastic damping column 22 or the elastic damping ring 23 are both elastic rubber bodies, and the central rubber column is adapted to the deformation of the disc spring 21 to achieve synchronous elastic deformation and damping shock absorption;

[0025] In order to further improve the damping effect, the elastic damping column 22 or the elastic damping ring 23 may also be composed of a high-elastic rubber matrix and metal stiffening plates or metal rings stacked in intervals in the high-elastic rubber matrix. The composite rubber elastomer has better deformation performance and a long-term and stable elastic damping effect.

[0026] ——Furthermore, deformation gaps (31, 32) are provided between the elastic damping column 22 and the disc spring 21, and between the disc spring 21 and the elastic damping ring 23, which can provide sufficient compression and deformation space for the central elastic damping column 22 and the disc spring 21 to avoid structural damage caused by excessive extrusion. The thickness of the elastic damping ring 23 does not exceed the initial height of the disc spring 21 or the elastic damping column 22, ensuring that the central position of the central elastic damping column 22 and the disc spring 21 does not deviate after compression and deformation, and can also be stressed at the same time to enhance the vertical shock absorption effect;

[0027] ——The vertical damping mechanism of the novel bearing can be applied to a variety of existing bridge bearings. For example, the bearing body 10 can be a plate bearing body, a pot bearing body, a spherical bearing body or a friction pendulum bearing body, which is convenient for technical transformation of traditional bearings, improves the application scope of the bearing, and has a high market promotion value;

[0028] ——Specifically, taking the friction pendulum support as an example, the support body 10 includes an upper support plate 4 and a middle support plate 5, the lower part of the middle support plate 5 is connected to the vertical damping mechanism, and a friction pair is arranged between the upper support plate 4 and the middle support plate 5;

[0029] Preferably, the lower part of the middle support plate 5 is placed in the groove 11 of the lower support plate 1 to play a covering and positioning role. A sealing ring 6 is arranged between the side of the middle support plate 5 and the groove 11 of the lower support plate 1, which can seal and isolate the vertical shock absorbing mechanism to prevent corrosion from the external environment; at the same time, it avoids friction damage between the middle support plate 5 and the side wall of the groove 11 of the lower support plate 1, and plays a buffering and protective role;

[0030] ——Furthermore, a lining plate 51 is arranged above the middle support plate 5, and the friction pair includes a first friction pair 71 arranged between the lining plate and the upper support plate 4, and a second friction pair 72 arranged between the lining plate and the middle support plate 5;

[0031] The first friction pair 71 is a plane friction pair, that is, a plane sliding friction is formed between the bottom surface of the upper support plate 4 and the top surface of the lining plate 51; the second friction pair 72 is a spherical friction pair, and a spherical sliding friction is formed between the spherical crown curved surface of the bottom surface of the lining plate 51 and the spherical groove 11 on the top surface of the middle support plate 5, and a friction pendulum structure is formed through the curved lining plate;

[0032] Preferably, the first friction pair 71 and the second friction pair 72 are both composed of stainless steel slide plates and wear-resistant plates. The wear-resistant plates are composed of modified polytetrafluoroethylene plates and modified ultra-high molecular weight polyethylene plates, and have excellent sliding wear resistance, long service life, safe and stable operation, and good economic durability.

[0033] The above-described implementation modes are only used to illustrate the technical solution of the utility model, and are not limiting conditions for the implementation of the utility model. Therefore, any other modifications or equivalent replacements of configuration dimensions and internal structures made to the technical solution of the utility model, as long as they do not depart from the spirit and scope of the technical solution of the utility model, should be included in the scope of the claims of the utility model.

Claims

1. A bridge support with a vertical shock absorbing mechanism, characterized in that: It includes a support body, a lower support plate of the support body is provided with a groove, a vertical shock absorbing mechanism is provided in the groove, and the vertical shock absorbing mechanism includes a disc spring, an elastic damping column arranged at the center of the disc spring, and an elastic damping ring surrounding the disc spring.

2. A bridge support with a vertical shock absorbing mechanism according to claim 1, characterized in that: The elastic damping column or the elastic damping ring is an elastic rubber body, or the elastic damping column or the elastic damping ring is composed of a high-elastic rubber matrix and a metal stiffening plate or a metal ring stacked in the high-elastic rubber matrix.

3. A bridge support with a vertical shock absorbing mechanism according to claim 1 or 2, characterized in that: A deformation gap is provided between the elastic damping column and the disc spring, and between the disc spring and the elastic damping ring, and the thickness of the elastic damping ring does not exceed the initial height of the disc spring or the elastic damping column.

4. The bridge support with a vertical shock absorbing mechanism according to claim 1, characterized in that: The support body is a plate-type support body, a pot-type support body, a spherical support body or a friction pendulum support body.

5. The bridge support with a vertical shock absorbing mechanism according to claim 4, characterized in that: The support body comprises an upper support plate and a middle support plate. The lower part of the middle support plate is connected to the vertical shock absorbing mechanism. A friction pair is arranged between the upper support plate and the middle support plate.

6. A bridge support with a vertical shock absorbing mechanism according to claim 5, characterized in that: The lower portion of the middle support plate is placed in the groove of the lower support plate, and a sealing ring is arranged between the side portion of the middle support plate and the groove of the lower support plate.

7. The bridge support with a vertical shock absorbing mechanism according to claim 5, characterized in that: A lining plate is arranged above the middle support plate, and the friction pair comprises a first friction pair arranged between the lining plate and the upper support plate, and a second friction pair arranged between the lining plate and the middle support plate.

8. The bridge support with a vertical shock absorbing mechanism according to claim 7, characterized in that: The first friction pair is a plane friction pair; the second friction pair is a spherical friction pair, which is placed between the spherical crown surface on the bottom surface of the lining plate and the spherical groove on the top surface of the middle support plate. The first friction pair and the second friction pair are both composed of stainless steel slide plates and wear-resistant plates, and the wear-resistant plates are composed of modified polytetrafluoroethylene plates and modified ultra-high molecular weight polyethylene plates.

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