Corrosion-resistant closed waterproof support

Abstract

The utility model belongs to the technical field of bridge supports, and particularly relates to a corrosion-resistant closed waterproof support which is particularly suitable for working conditions of periodic water soaking and seawater sputtering corrosion. The waterproof support comprises a support body and a surrounding plate surrounding the support body, the upper side and the lower side of the surrounding plate are connected with the outer side of an upper support plate and the outer side of a lower support plate of the support body in a sealed mode respectively, so that a sealed cavity is formed in the support body, and the upper support plate and / or the lower support plate are / is provided with at least two through holes communicated with the sealed cavity. At least one through hole is connected with the oil conveying pipe and is used for injecting anti-rust grease into the sealing cavity; at least one through hole is provided with a valve for controlling exhaust; the waterproof support has the advantages of being excellent in waterproof and corrosion-resistant performance, low in manufacturing and maintenance cost, convenient to disassemble and assemble and controllable and stable in quality.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge bearings, and specifically relates to a corrosion-resistant closed waterproof bearing, which is particularly suitable for periodic water immersion and seawater sputtering corrosion conditions. Background Art

[0002] In recent years, my country's road transportation has developed rapidly. As a very important force transmission component in the bridge structure, bridge bearings have been widely used in various urban bridges and rail transportation fields. With the increasing number of coastal bridges, the requirements for bridge bearings to be waterproof and erosion-resistant have become more urgent.

[0003] During the flood season, many city bridges will be level with the water surface, and bridge supports are often immersed in water. Some coastal bridges are usually not designed too high for urban landscape effects. The supports located above the piers are extremely susceptible to damage such as immersion and splash corrosion from seawater.

[0004] Traditional bridge bearings are not waterproof, and neither the main material nor the friction parts can resist the erosion of urban sewage and seawater. If they are in the above working conditions for a long time, the life of the bridge bearings will drop sharply, which will affect the safe use of the bridge structure.

[0005] In the existing technology, for bridge bearings in flooded bridges and seawater splash zones, China generally adopts heavy anti-corrosion treatment for the bearings. Due to the complex and changeable appearance of the bearings, the surface coating of the bearings will corrode after 2 to 5 years, the protection effect is not ideal, and the subsequent maintenance cost is high.

[0006] Some bearings also improve the waterproof purpose of the bearing by setting rubber sealing rings, polyurethane sealing isolation layers, etc., but they all have disadvantages such as being unable to withstand periodic water immersion, complicated installation procedures, difficult to control installation quality, and easy failure of waterproof structures, resulting in unsatisfactory waterproof effects.

[0007] The invention with application number CN202210179895.4 discloses a bridge bearing waterproof device, wherein the upper plate is embedded in the beam body, the upper plate is sealed and connected to the upper part of the waterproof cover, the lower part of the waterproof cover is connected to the elastic displacement device, the elastic displacement device is connected to the lower plate, the lower plate is embedded in the side of the pier, the elastic displacement device is not sealed and connected to the waterproof cover and the lower plate, the beam body, the upper plate, the waterproof cover, the lower plate and the pier form a semi-enclosed space together, and the semi-enclosed space is used to set the bearing; it uses the air pressure inside the waterproof device to resist the water level rise, so that a water level difference is formed inside and outside the waterproof device, and water will not be able to corrode the bearing, so as to protect the bearing, effectively improve the corrosion resistance of the bearing, and extend the service life of the bearing. However, the device has many structural components, complex connection relationships, high manufacturing costs, and is not economical; secondly, in actual use, the bridge bearing slips, turns, or swings in vibration isolation, and the waterproof device has poor stability and is not safe and durable. Utility Model Content

[0008] The purpose of the utility model is to provide a new waterproof support with excellent waterproof and corrosion resistance, low manufacturing and maintenance costs, convenient disassembly and assembly, and controllable and stable quality, which is particularly suitable for periodic water immersion and seawater sputtering corrosion conditions.

[0009] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0010] A corrosion-resistant, closed and waterproof support, characterized in that it includes a support body and a surrounding plate surrounding the support body, the upper and lower sides of the surrounding plate are respectively sealed and connected to the outer sides of the upper support plate and the lower support plate of the support body, so that a sealed cavity is formed inside the support body, the upper support plate and / or the lower support plate are provided with at least two through holes connected to the sealed cavity, at least one of the through holes is connected to an oil pipeline for injecting anti-rust grease into the sealed cavity; at least one of the through holes is provided with a valve for controlling exhaust.

[0011] Additional technical features of the above-mentioned corrosion-resistant closed waterproof support include:

[0012] ——The outer surfaces of the upper support plate and the lower support plate are covered with a rubber anti-corrosion layer, and the rubber anti-corrosion layer is connected to the upper support plate and the lower support plate by bonding or vulcanization;

[0013] The upper support plate and the lower support are both provided with the through hole, the through hole is connected to the oil pipeline, the oil pipeline is provided with the valve, and the valve is a one-way valve or a ball valve;

[0014] ——The enclosure is an elastic rubber sheet, and the upper and lower edges of the enclosure are respectively compressed and sealed with the outer side walls of the upper support plate and the lower support plate by a plurality of bolts. At the sealed connection, an oil-resistant rubber pad is arranged on the inner side of the enclosure, and a stainless steel strip is arranged on the outer side of the enclosure. The bolts sequentially penetrate the stainless steel washer, the stainless steel strip, the enclosure, the oil-resistant rubber pad and the threaded holes on the outer side wall of the upper support plate or the lower support plate and are tightened;

[0015] - A plurality of ridges are arranged on the inner side of the oil-resistant rubber pad, and the ridges correspond to the grooves arranged on the outer side wall of the upper support plate or the lower support plate;

[0016] The support body includes a middle support body arranged between the upper support plate and the lower support plate, and the middle support body is a rubber pressure-bearing body or a friction pendulum;

[0017] The friction pendulum is a hyperbolic spherical crown lining plate, which cooperates with the spherical grooves of the upper support plate and the lower support plate to form a spherical friction pair; or the friction pendulum is a single curved spherical crown lining plate,

[0018] A spherical friction pair is arranged on one side of the spherical curved surface, and a planar friction pair is arranged on one side of the planar surface;

[0019] ——An upper anchor bolt assembly is arranged on the upper surface of the upper bearing plate, which is connected to the bridge beam body; a lower anchor bolt assembly is arranged on the lower surface of the lower bearing plate, which is connected to the bridge pier.

[0020] Compared with the prior art, the corrosion-resistant closed waterproof bearing provided by the utility model has the following advantages: the bearing body of the device is surrounded by a sealing enclosure to form a sealed cavity between the upper bearing plate and the lower bearing plate, which can prevent water or mud and dirt in the water from entering the internal structure of the bearing, maintain the anti-corrosion ability of the bearing for a long time, and avoid the problem of internal rust caused by the bridge bearing being immersed in water; at the same time, the upper bearing plate and / or the lower bearing plate are provided with at least two through holes connected to the sealed cavity, at least one through hole is connected to the oil pipeline for injecting anti-rust grease into the sealed cavity; at least one through hole is provided with a valve The door is used to control the exhaust. The bridge bearing body is in a sealed environment, and the main components are isolated and protected by anti-rust grease. On the one hand, the anti-rust grease infiltrates the internal steel parts of the bearing to prevent rust. On the other hand, the closed cavity filled with anti-rust grease can also provide sufficient pressure to resist and balance the external water pressure on the sealing components under periodic water immersion and seawater splashing conditions, so that the internal and external pressures tend to be balanced, effectively reducing the possibility of external water and dirt invading the internal structure of the bearing, greatly improving the service life of the bearing under the above conditions, and has the advantages of simple and compact structure, convenient use and maintenance, safety, economy and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1This is a structural schematic diagram of a corrosion-resistant, closed and waterproof support of the utility model;

[0022] Figure 2 This is a schematic diagram of the bolt sealing connection of the waterproof support. Figure 1 (Part a). DETAILED DESCRIPTION

[0023] The structure and working principle of the novel corrosion-resistant closed waterproof support provided by the utility model are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. 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.

[0024] In the description of the present invention, unless otherwise specified, the terms "upper", "lower", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0025] 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.

[0026] like Figure 1 As shown, the structure of the novel corrosion-resistant closed waterproof bearing includes a bearing body 1 and a surrounding plate 2 surrounding the bearing body 1, and the upper and lower sides of the surrounding plate 2 are respectively sealed and connected to the outer sides of the upper bearing plate 11 and the lower bearing plate 12 of the bearing body 1, so that a sealed cavity 3 is formed inside the bearing body 1, and the upper bearing plate 11 and / or the lower bearing plate 12 are provided with at least two through holes 4 connected to the sealed cavity 3, and at least one through hole 4 is connected to the oil pipeline 41 for injecting anti-rust grease 31 into the sealed cavity 3; at least one through hole 4 is provided with a valve 42 for controlling exhaust.

[0027] Its working principle is as follows: the support body 1 of the waterproof support is internally sealed by a surrounding enclosure 2, and anti-rust grease 31 is injected into the sealing cavity 3 between the upper support plate 11 and the lower support plate 12, which can not only isolate the support body 1 to prevent water erosion, but also keep the internal components in a lubricated state to reduce friction loss.

[0028] It should be noted that in order to fill the sealing chamber 3 with anti-rust grease 31, a through hole 4 needs to be set on the upper support plate 11 and / or the lower support plate 12. During the injection, it is necessary to ensure that the sealing chamber 3 is vented and the sealing chamber 3 is fully filled. Therefore, the number of through holes 4 is at least 2, one for oil transmission and the other for exhaust. A valve 42 needs to be set on the through hole 4 to prevent water from entering.

[0029] In the structure constituting the above-mentioned novel corrosion-resistant closed waterproof support,

[0030] ——Preferably, the outer surfaces of the upper support plate 11 and the lower support plate 12 are coated with a rubber anti-corrosion layer 5, and the rubber anti-corrosion layer 5 is connected to the upper support plate 11 and the lower support plate 12 by bonding or vulcanization. The manufacturing process is simple. The rubber anti-corrosion layer 5 can be composed of chloroprene rubber or fluororubber. A composite structure can also be selected, such as a copper-containing chlorosulfonated natural rubber anti-fouling layer, a chlorinated natural rubber anti-corrosion layer, a chlorosulfonated natural rubber anti-corrosion layer, and a zinc-rich inorganic silicate anti-rust bottom layer from the outside to the inside. This can not only maintain the anti-corrosion advantages of the chlorinated natural rubber coating, but also reduce the corrosion effect of the microorganisms in the ocean on the adhesion of the coating. The chlorosulfonated natural rubber anti-corrosion layer can be well compatible and tightly combined with the chlorinated natural rubber anti-corrosion layer and the zinc-rich inorganic silicate anti-rust bottom layer, respectively, thereby improving the anti-corrosion performance of the overall coating, making the waterproof support particularly suitable for high-salt seawater vapor fumigation, seawater splashing and soaking, and even periodic immersion in seawater or highly corrosive urban sewage.

[0031] In one embodiment, the upper support plate 11 and the lower support are both provided with a through hole 4, the through hole 4 is connected to the oil pipeline 41, and a valve 42 is provided on the oil pipeline 41, the valve 42 is a one-way valve or a ball valve, that is, the through hole 4 of the lower support plate 12 is connected to the oil pipeline 41 for injecting anti-rust grease 31, and the through hole 4' of the upper support plate 11 is connected to the oil pipeline 41', which can effectively exhaust air, and the upper and lower through holes (4, 4') correspond vertically to form a working group, which improves the oil injection and exhaust effect. Of course, the number of the working groups can be multiple, which are symmetrically arranged on both sides of the support body 1 to further improve the working efficiency;

[0032] --like Figure 2 As shown, the above-mentioned enclosure 2 is an elastic rubber sheet, which can be flexibly deformed to adapt to the needs of bearing sliding and cornering. The upper and lower edges of the enclosure 2 are respectively connected to the outer side walls of the upper support plate 11 and the lower support plate 12 by a plurality of stainless steel bolts 6 to be compressed and sealed. At the sealed connection, an oil-resistant rubber pad 61 is arranged on the inner side of the enclosure 2, and a stainless steel pressure strip 62 is arranged on the outer side of the enclosure 2. The bolts 6 sequentially penetrate the stainless steel gasket 63, the stainless steel pressure strip 62, the enclosure 2, the oil-resistant rubber pad 61 and the threaded holes on the outer side wall of the upper support plate 11 or the lower support plate 12 and are tightened. The sealing structure is simple, the processing is convenient, and it is easy to install and maintain later. The bolts 6 are evenly arranged around the outer side wall of the upper support plate 11 or the lower support plate 12, which compacts the enclosure 2 firmly and has a stable and long-lasting sealing effect.

[0033] ——In order to further improve the compression and sealing effect of the enclosure 2, a plurality of ridges 71 are provided on the inner side of the oil-resistant rubber pad 61. The ridges 71 correspond to the grooves 72 provided on the outer side wall of the upper support plate 11 or the lower support plate 12. The ridges 71 cooperate with the grooves 72 to position the oil-resistant rubber 61 and prevent it from deforming and falling off, and increase the sealing area to ensure long-term and stable sealing;

[0034] ——Preferably, the bearing body 1 includes a middle bearing body 13 arranged between the upper bearing plate 11 and the lower bearing plate 12, and the middle bearing body 13 is a rubber pressure-bearing body or a friction pendulum, that is, the waterproof bearing is applicable to a variety of technical improvements of existing bridge bearings, such as a basin-type rubber bearing in which the middle bearing body 13 is a rubber pressure-bearing body, or a new type of seismic isolation bearing in which the middle bearing body 13 is a friction pendulum, which further improves the application range of the waterproof bearing;

[0035] Specifically, the friction pendulum is a hyperbolic spherical crown liner, which is respectively connected to the upper support plate 11,

[0036] The spherical groove of the lower bearing plate 12 cooperates to form a spherical friction pair; or the friction pendulum is a single-curved spherical crown liner, and a spherical friction pair 81 is arranged on one side of the spherical curved surface, and a flat friction pair 82 is arranged on the flat side. This waterproof bearing can meet the requirements of friction pendulum seismic isolation bearings of different structures, forming a variety of new waterproof bearings to meet different working conditions and usage scenarios;

[0037] ——Furthermore, an upper anchor bolt assembly 91 is provided on the upper surface of the upper bearing plate 11, which is connected to the bridge beam; a lower anchor bolt assembly 92 is provided on the lower surface of the lower bearing plate 12, which is connected to the bridge pier, thereby improving the stability of the waterproof bearing, extending the working cycle, and being economical and durable.

[0038] 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 corrosion-resistant closed waterproof support, characterized in that: It includes a support body and a surrounding plate surrounding the support body, the upper and lower sides of the surrounding plate are respectively sealed and connected to the outer sides of the upper support plate and the lower support plate of the support body, so that a sealed cavity is formed inside the support body, and the upper support plate and / or the lower support plate are provided with at least two through holes connected to the sealed cavity, at least one of the through holes is connected to the oil pipeline for injecting anti-rust grease into the sealed cavity; at least one of the through holes is provided with a valve for controlling exhaust.

2. The corrosion-resistant closed waterproof support according to claim 1, characterized in that: The outer surfaces of the upper support plate and the lower support plate are both covered with a rubber anti-corrosion layer, and the rubber anti-corrosion layer is connected to the upper support plate and the lower support plate by bonding or vulcanization.

3. The corrosion-resistant closed waterproof support according to claim 1, characterized in that: The upper support plate and the lower support are both provided with the through hole, the through hole is connected to the oil pipeline, the oil pipeline is provided with the valve, and the valve is a one-way valve or a ball valve.

4. The corrosion-resistant closed waterproof support according to claim 1, characterized in that: The enclosure is an elastic rubber sheet, and the upper and lower edges of the enclosure are respectively compressed and sealed with the outer walls of the upper support plate and the lower support plate by a number of bolts. At the sealed connection, an oil-resistant rubber pad is arranged on the inner side of the enclosure, and a stainless steel strip is arranged on the outer side of the enclosure. The bolts pass through the stainless steel washer, the stainless steel strip, the enclosure, the oil-resistant rubber pad and the threaded holes on the outer wall of the upper support plate or the lower support plate in sequence and are tightened.

5. The corrosion-resistant closed waterproof support according to claim 4, characterized in that: A plurality of ridges are arranged on the inner side of the oil-resistant rubber pad, and the ridges correspond to the grooves arranged on the outer side wall of the upper support plate or the lower support plate.

6. The corrosion-resistant closed waterproof support according to claim 1, characterized in that: The support body comprises a middle support body arranged between the upper support plate and the lower support plate, and the middle support body is a rubber pressure-bearing body or a friction pendulum.

7. The corrosion-resistant closed waterproof support according to claim 6, characterized in that: The friction pendulum is a double-curved spherical crown lining plate, which cooperates with the spherical grooves of the upper support plate and the lower support plate to form a spherical friction pair; or the friction pendulum is a single-curved spherical crown lining plate, whose spherical surface A spherical friction pair is arranged on one side, and a planar friction pair is arranged on the plane side.

8. The corrosion-resistant closed waterproof support according to claim 1, characterized in that: An upper anchor bolt assembly is disposed on the upper surface of the upper support plate and connected to the bridge beam body; a lower anchor bolt assembly is disposed on the lower surface of the lower support plate and connected to the bridge pier.

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