CN214401396U

CN214401396U - Bridge bearing

Info

Publication number: CN214401396U
Application number: CN202023338816.5U
Authority: CN
Inventors: 周雄湘
Original assignee: Changsha Xiangrui Heavy Industry Co ltd
Current assignee: Changsha Xiangrui Heavy Industry Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-10-15
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a bridge bearing, including undersetting, the spherical crown body, plane antifriction plate, upper bracket and annular antifriction plate, the top of undersetting is provided with spherical concave surface, the bottom of the spherical crown body be provided with spherical convex surface and pass through spherical convex surface cooperation install in on the spherical concave surface, the plane antifriction plate set up in the top of the spherical crown body, the bottom of upper bracket is provided with the cooperation portion, the cooperation portion bear in plane antifriction plate top, annular antifriction plate can dismantle the ground cover and locate the outside of cooperation portion, the bottom of annular antifriction plate with the bottom parallel and level of cooperation portion, the coefficient of friction of annular antifriction plate bottom is greater than the coefficient of friction of cooperation portion bottom. According to the utility model discloses bridge beam supports, not only earthquake power consumption ability is strong, and annular antifriction plate can be changed moreover, and then makes bridge beam supports's life longer.

Description

Bridge bearing

Technical Field

The utility model relates to a bridge facility, in particular to bridge beam supports.

Background

The bridge beam body is arranged on the bridge beam body, the bridge beam body is arranged on the bridge beam support, the bridge beam support is arranged between the bridge beam body and the abutment, all loads of the bridge beam body can be reliably transmitted to the abutment by the bridge beam support, performance indexes and the service life of the bridge beam support directly influence the quality of a bridge, and in recent years, along with the improvement of technology, the requirement on the bridge beam support is higher and higher.

Spherical bearing is one of common high-speed railway bridge support, mainly includes the undersetting, the upper bracket and the spherical crown body, and the undersetting is installed on the pier, and the top of undersetting is provided with spherical concave surface, and the bottom of the spherical crown body is provided with spherical convex surface and installs in spherical concave surface through spherical convex surface cooperation, and the top of the spherical crown body is provided with the plane antifriction plate, and the upper bracket bears on the plane antifriction plate, and the bridge roof beam body is installed on the upper bracket.

In order to adjust the telescopic deformation of the bridge body caused by the deflection of the main beam due to the temperature change and the normal operation load, the friction coefficient between the upper support and the plane wear-resisting plate is small, and further when an earthquake occurs, the upper support is easy to generate large displacement, so that the bridge is damaged. In addition, after the upper support is greatly displaced, the bottom surface of the upper support is easily abraded in a large range, so that the seismic energy consumption capacity of the spherical support is further reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a bridge beam supports, not only the earthquake power consumption ability is strong, and life is longer moreover.

According to the utility model discloses bridge beam supports, include:

the top end of the lower support is provided with a spherical concave surface;

the bottom end of the spherical crown body is provided with a spherical convex surface and is installed on the spherical concave surface through the spherical convex surface in a matching way;

the plane wear-resisting plate is arranged at the top end of the spherical crown body;

the bottom end of the upper support is provided with a matching part, and the matching part is borne on the top end of the plane wear-resisting plate;

the annular wear-resisting plate can be detachably arranged at the bottom end of the upper support and sleeved on the outer side of the matching portion, the bottom end of the annular wear-resisting plate is flush with the bottom end of the matching portion, and the friction coefficient of the bottom end of the annular wear-resisting plate is larger than that of the bottom end of the matching portion.

According to the utility model discloses bridge beam supports has following technological effect at least:

the bottom suspension can be installed on the pier, the bridge roof beam body can be installed on the top suspension, the top suspension bears on plane antifriction plate top through cooperation portion, the coefficient of friction of cooperation portion bottom is less, under bridge normal use state, through the sliding friction between plane antifriction plate and the cooperation portion, sliding friction between spherical convex surface and the spherical concave surface, can guarantee that the top suspension keeps normal design displacement and rotation, that is to say under bridge normal use state, can deal with the bridge roof beam body because the flexible deformation that temperature variation and normal operation load lead to. When the earthquake happens, the displacement of upper bracket along the horizontal direction increases, the plane antifriction plate can contact with annular antifriction plate and relative slip appears, because the coefficient of friction of annular antifriction plate bottom is greater than the coefficient of friction of cooperation portion bottom, and then make ground mutual slip more difficult between plane antifriction plate and the annular antifriction plate, also be exactly the holistic friction power consumption ability of bridge beam supports obtains improving, thereby improved the power consumption ability to the earthquake, the holistic shock resistance and the security of bridge have been promoted, the destruction of earthquake to the bridge is reduced. In addition, after the annular wear-resisting plate caused wearing and tearing, can dismantle the annular wear-resisting plate that has worn and reinstall new annular wear-resisting plate, new annular wear-resisting plate can be defended next earthquake, and need not change whole upper bracket or still use old annular wear-resisting plate, and not only the security is higher, and bridge beam supports life is longer, and it is more convenient to operate moreover, and is more economical and practical.

According to the utility model discloses a some embodiments, be provided with first ring groove along circumference on the lateral wall of cooperation portion, the inboard card of annular antifriction plate is located in the first ring groove.

According to some embodiments of the invention, the annular wear plate comprises two semi-annular plates, two the semi-annular plates are spliced to form the annular wear plate.

According to the utility model discloses a some embodiments, the bottom of upper bracket in the outside of annular antifriction plate is provided with the spacing portion of annular that can dismantle, the inside wall top of the spacing portion of annular is held the lateral wall of annular antifriction plate.

According to the utility model discloses a some embodiments, be provided with annular fixture block along circumference on the inside wall of the spacing portion of annular, annular fixture block with be formed with second annular clamping groove between the bottom surface of upper bracket, the outside card of annular antifriction plate is located in the second annular clamping groove.

According to some embodiments of the invention, the bottom end of the annular limiting portion is lower than the top end of the lower support.

According to some embodiments of the utility model, be provided with the elastic buffer portion on the inside wall of the spacing portion of annular, the bottom of elastic buffer portion is less than the top of undersetting.

According to some embodiments of the invention, the elastic buffer is made of elastic rubber.

According to some embodiments of the invention, the elastic buffer is a horizontally arranged spring.

According to some embodiments of the utility model, the top of annular antifriction plate with the bottom laminating of upper bracket.

According to some embodiments of the utility model, spherical concave surface with be provided with the sphere antifriction plate between the spherical convex surface.

According to some embodiments of the utility model, the plane antifriction plate is disc-shaped structure, cooperation portion is cylindrical structure, the diameter of plane antifriction plate is less than the diameter of cooperation portion.

According to some embodiments of the invention, the coefficient of friction of the mating portion bottom end is 0.01 to 0.05.

According to some embodiments of the invention, the coefficient of friction of the annular wear plate bottom end is 0.1 to 0.15.

According to some embodiments of the utility model, be provided with the installation department on the lateral wall of the spacing portion of annular, the installation department with upper bracket bolted connection.

According to the utility model discloses a some embodiments, the top of the spherical crown body is provided with the mounting groove, the plane antifriction plate inlay mutually install in the mounting groove.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of the overall structure of the present invention;

reference numerals:

a lower support 100; a spherical cap body 200; a planar wear plate 300; an upper support 400 and a matching part 401; an annular wear plate 500; the device comprises an annular limiting part 600, an annular fixture block 601 and an elastic buffer part 602; a spherical wear plate 700.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A bridge bearing according to an embodiment of the invention is described below with reference to fig. 1.

According to the utility model discloses bridge beam supports, as shown in FIG. 1, include:

the top end of the lower support 100 is provided with a spherical concave surface;

the spherical crown body 200 is characterized in that a spherical convex surface is arranged at the bottom end of the spherical crown body 200 and is installed on the spherical concave surface in a matched mode through the spherical convex surface;

a plane wear plate 300 disposed at the top end of the spherical crown body 200;

the bottom end of the upper support 400 is provided with a matching part 401, and the matching part 401 is borne on the top end of the plane wear-resisting plate 300;

the annular wear plate 500 is detachably arranged at the bottom end of the upper support 400 and sleeved outside the matching portion 401, the bottom end of the annular wear plate 500 is flush with the bottom end of the matching portion 401, and the friction coefficient of the bottom end of the annular wear plate 500 is larger than that of the bottom end of the matching portion 401.

In this embodiment, the bottom bracket 100 can be installed on the pier, the bridge girder body can be installed on the top bracket 400, the top bracket 400 bears on the top of the plane wear-resisting plate 300 through the cooperation portion 401, the friction coefficient of the bottom of the cooperation portion 401 is smaller, under the normal use state of the bridge, through the sliding friction between the plane wear-resisting plate 300 and the cooperation portion 401, the sliding friction between the spherical convex surface and the spherical concave surface, it can be ensured that the top bracket 400 keeps normal design displacement and rotation, that is to say, under the normal use state of the bridge, the bridge girder body can be coped with due to the telescopic deformation caused by temperature change and normal operation load.

When an earthquake occurs, the displacement of the upper support 400 along the horizontal direction is increased, the plane wear-resisting plate 300 can contact with the annular wear-resisting plate 500 and slide relatively, the friction coefficient of the bottom end of the annular wear-resisting plate 500 is larger than that of the bottom end of the matching part 401, and further the plane wear-resisting plate 300 and the annular wear-resisting plate 500 can slide relatively more difficultly, namely, the whole friction energy consumption capacity of the bridge support is improved, so that the energy consumption capacity to the earthquake is improved, the whole shock resistance and safety of the bridge are improved, and the damage of the earthquake to the whole bridge is reduced.

In addition, when annular antifriction plate 500 caused the wearing and tearing back, can dismantle the annular antifriction plate 500 that has worn out and reinstall new annular antifriction plate 500, new annular antifriction plate 500 can be defended next earthquake, and need not change whole upper bracket 400 or still use old annular antifriction plate 500, and not only the security is higher, and bridge beam supports life is longer, and it is more convenient to operate moreover, and is more economical and practical.

It should be noted that a spherical convex surface may be provided at the top end of the lower seat 100, and a spherical concave surface may be provided at the bottom end of the spherical crown body 200 and may be fitted on the spherical convex surface through the spherical concave surface. Furthermore, in order to allow for a smoother contact between the planar wear plate 300 and the annular wear plate 500, the inner side of the annular wear plate 500 needs to engage and abut the outer side of the mating portion 401.

In some embodiments of the present invention, as shown in fig. 1, a first annular groove is circumferentially disposed on the outer sidewall of the fitting portion 401, and the inner side of the annular wear-resisting plate 500 is clamped in the first annular groove. When the annular wear-resisting plate 500 needs to be installed, the inner side of the annular wear-resisting plate 500 is clamped in the first annular clamping groove, so that the operation is convenient, and the time and the labor are saved. It should be noted that, in order to make the bottom end of the annular wear plate 500 flush with the bottom end of the matching portion 401, an annular clamping strip may be disposed on the inner side wall of the annular wear plate 500 along the circumferential direction and clamped in the first annular clamping groove by the annular clamping strip. The annular wear plate 500 may be detachably attached to the upper holder 400 on the circumferential side of the fitting portion 401 by fastening bolts.

In some embodiments of the present invention, as shown in fig. 1, the annular wear plate 500 comprises two semi-annular plates that are spliced to form the annular wear plate 500. When the annular wear-resisting plate 500 needs to be installed, the inner sides of the two semi-annular plates are inserted into the first annular clamping groove, the two ends of the two semi-annular plates are mutually abutted, the two semi-annular plates can be spliced to form the annular wear-resisting plate 500, the installation of the annular wear-resisting plate 500 can be completed simultaneously, the operation is simple and convenient, the time and the labor are saved, and the annular wear-resisting plate 500 needs to be detached conveniently.

In some embodiments of the present invention, as shown in fig. 1, the bottom end of the upper support 400 is provided with a detachable annular limiting portion 600 outside the annular wear-resisting plate 500, and the inner side wall of the annular limiting portion 600 supports the outer side wall of the annular wear-resisting plate 500. The outer side wall of the annular wear-resisting plate 500 is supported by the inner side wall of the annular limiting portion 600, and the annular wear-resisting plate 500 can be prevented from moving out of the first annular clamping groove, so that the annular wear-resisting plate 500 is more firmly installed, and the whole safety of the bridge bearing is better.

In some embodiments of the present invention, as shown in fig. 1, an annular clamping block 601 is disposed on the inner side wall of the annular limiting portion 600 along the circumferential direction, a second annular clamping groove is formed between the annular clamping block 601 and the bottom surface of the upper support 400, and the outer side of the annular wear-resisting plate 500 is clamped in the second annular clamping groove. The outside card that will encircle antifriction plate 500 locates in the second annular draw-in groove to make the installation of annular antifriction plate 500 more firm, make bridge beam supports's whole security better. It should be noted that, in order to make the bottom end of the annular wear plate 500 flush with the bottom end of the matching portion 401, an annular clamping strip may also be disposed on the outer side wall of the annular wear plate 500 along the circumferential direction and clamped in the second annular clamping groove by the annular clamping strip.

In some embodiments of the present invention, as shown in fig. 1, the bottom end of the annular limiting portion 600 is lower than the top end of the lower support 100. When an earthquake occurs, after the upper support 400 moves for a long distance relative to the lower support 100, the annular limiting part 600 can limit the upper support 400 to move continuously, so that bridge damage, even high-speed rail damage and casualties caused by the fact that the upper support 400 slips from the lower support 100 can be avoided.

In some embodiments of the present invention, as shown in fig. 1, an elastic buffer 602 is disposed on the inner sidewall of the annular limiting portion 600, and the bottom end of the elastic buffer 602 is lower than the top end of the lower support 100. Set up elasticity buffer 602, elasticity buffer 602 plays the cushioning effect, when the earthquake appears, can avoid the lower support 100 directly to appear the rigidity with spacing portion 600 of annular and collide to can reduce the damage of lower support 100 or spacing portion 600 of annular.

In some embodiments of the present invention, as shown in fig. 1, the elastic buffer 602 is made of elastic rubber. The elastic rubber has wide sources, low price, difficult occurrence of rust and long service life, and is a preferable material for preparing the elastic buffering part 602.

In some embodiments of the present invention, as shown in fig. 1, the elastic buffer 602 is a horizontally disposed spring. The elastic buffer 602 is preferably large in spring elastic restoring force, convenient to install, economical in price and long in service life.

In some embodiments of the present invention, as shown in fig. 1, the top end of the annular wear plate 500 is attached to the bottom end of the upper support 400. Furthermore, when the annular wear plate 500 is attached to the planar wear plate 300, the upper seat 400 can also be directly supported on the planar wear plate 300, that is, the lower seat 100, so that the overall structural strength of the bridge bearing is higher and the service life is longer.

In some embodiments of the present invention, as shown in fig. 1, a spherical wear plate 700 is disposed between the spherical concave surface and the spherical convex surface. Compare direct contact and relative slip between spherical concave surface and the spherical convex surface, set up spherical antifriction plate 700, coefficient of friction between spherical concave surface and the spherical antifriction plate 700, the coefficient of friction between spherical convex surface and the spherical antifriction plate 700 is bigger, and then can further improve the power consumption ability to earthquake, further promote holistic shock resistance and the security of bridge, reduce the earthquake to the holistic destruction of bridge.

In some embodiments of the present invention, as shown in fig. 1, the planar wear plate 300 has a disc-shaped structure, the fitting portion 401 has a cylindrical structure, and the diameter of the planar wear plate 300 is smaller than the diameter of the fitting portion 401. And then the bridge is in a normal use state, the planar wear-resisting plate 300 can slide for a certain horizontal displacement relative to the matching part 401, and cannot directly contact with the annular wear-resisting plate 500 and slide relatively, so that the wear of the annular wear-resisting plate 500 in the normal use state of the bridge can be prevented.

In some embodiments of the present invention, the coefficient of friction at the bottom end of the fitting portion 401 is 0.01 to 0.05. The coefficient of friction at the bottom end of the mating portion 401 is between 0.01 and 0.05, which not only allows the mating portion 401 to slide relative to the planar wear plate 300, i.e. the upper carriage 400 to move relative to the lower carriage 100, but also prevents the mating portion 401 from sliding too fast, i.e. the upper carriage 400 from moving too fast, in normal bridge use.

In some embodiments of the present invention, the coefficient of friction of the bottom end of the annular wear plate 500 is 0.1 to 0.15. The coefficient of friction at the bottom end of the annular wear plate 500 is between 0.1 and 0.15, which not only allows the annular wear plate 500 to slide relative to the planar wear plate 300, i.e. the upper carriage 400 can move relative to the lower carriage 100, but also prevents the annular wear plate 500 from sliding too fast, i.e. the upper carriage 400 from moving too fast, in the event of an earthquake.

In some embodiments of the present invention, as shown in fig. 1, an installation portion is provided on the outer sidewall of the annular limiting portion 600, and the installation portion is connected to the upper support 400 by a bolt. The annular limiting portion 600 can be detachably arranged on the upper support 400 through the installation portion and the upper support 400 in a bolt connection mode, and the annular limiting portion 600 is more convenient to disassemble and assemble. It should be noted that the annular limiting portion 600 may also be clamped on the upper support 400.

In some embodiments of the present invention, as shown in fig. 1, the top end of the spherical cap body 200 is provided with a mounting groove, and the planar wear-resisting plate 300 is embedded in the mounting groove. The inner side walls of the mounting groove can prevent the planar wear plate 300 from moving together with the upper holder 400 or the annular wear plate 500, so that the upper holder 400 or the annular wear plate 500 can slide relative to the planar wear plate 300.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A bridge bearer, comprising:

the top end of the lower support (100) is provided with a spherical concave surface;

the spherical cap comprises a spherical cap body (200), wherein a spherical convex surface is arranged at the bottom end of the spherical cap body (200) and is installed on the spherical concave surface in a matching manner through the spherical convex surface;

the plane wear plate (300) is arranged at the top end of the spherical crown body (200);

the bottom end of the upper support (400) is provided with a matching part (401), and the matching part (401) is borne on the top end of the plane wear plate (300);

the annular wear plate (500) is detachably arranged at the bottom end of the upper support (400) and sleeved on the outer side of the matching portion (401), the bottom end of the annular wear plate (500) is flush with the bottom end of the matching portion (401), and the friction coefficient of the bottom end of the annular wear plate (500) is larger than that of the bottom end of the matching portion (401).

2. The bridge bearer according to claim 1, wherein the outer side wall of the fitting part (401) is circumferentially provided with a first annular groove, and the inner side of the annular wear plate (500) is clamped in the first annular groove.

3. Bridge support according to claim 2, wherein the annular wear plate (500) comprises two semi-annular plates, which are spliced to form the annular wear plate (500).

4. The bridge bearer according to claim 3, wherein the bottom end of the upper bearer (400) is provided with a detachable annular limiting part (600) at the outer side of the annular wear plate (500), and the inner side wall of the annular limiting part (600) supports against the outer side wall of the annular wear plate (500).

5. The bridge bearer according to claim 4, wherein an annular clamping block (601) is circumferentially arranged on the inner side wall of the annular limiting portion (600), a second annular clamping groove is formed between the annular clamping block (601) and the bottom surface of the upper bearer (400), and the outer side of the annular wear plate (500) is clamped in the second annular clamping groove.

6. The bridge support according to claim 5, characterized in that the bottom end of the annular limiting portion (600) is lower than the top end of the lower support (100).

7. The bridge support according to claim 6, wherein an elastic buffer part (602) is arranged on the inner side wall of the annular limiting part (600), and the bottom end of the elastic buffer part (602) is lower than the top end of the lower support (100).

8. The bridge bearing according to claim 7, wherein the elastic buffer (602) is made of elastic rubber.

9. The bridge support according to claim 1, wherein a top end of the annular wear plate (500) abuts a bottom end of the upper support (400).

10. The bridge bearing according to claim 1, wherein a spherical wear plate (700) is arranged between the spherical concave surface and the spherical convex surface.