CN108774949B - Vertical vibration isolation spherical steel support with lever assembly - Google Patents
Vertical vibration isolation spherical steel support with lever assembly Download PDFInfo
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- CN108774949B CN108774949B CN201810803917.3A CN201810803917A CN108774949B CN 108774949 B CN108774949 B CN 108774949B CN 201810803917 A CN201810803917 A CN 201810803917A CN 108774949 B CN108774949 B CN 108774949B
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- lever
- base plate
- steel support
- fulcrum
- curved surface
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/042—Mechanical bearings
- E01D19/046—Spherical bearings
Abstract
A vertical vibration isolation spherical steel support with lever components is disclosed, wherein a lower seat plate and a base plate of the spherical steel support are arranged up and down, two sides of the base plate are respectively provided with a stop block, the side surfaces of the two stop blocks are respectively contacted with two sides of the lower seat plate, the upper surface of a bottom plate of the base plate is provided with two lever fulcrum curved surfaces which are symmetrical about the central line of a spherical steel support shaft, the center of the bottom surface of the lower seat plate is provided with two embedded curved surfaces which are symmetrical about the central line of the spherical steel support shaft, two groups of lever components are arranged in a space which is enclosed by the lower seat plate and the base plate and are symmetrically arranged on two sides of the central line of the spherical steel support shaft, each group of lever components comprises a rotating block, a lever and an elastic body, the vertical rigidity of the support is decomposed into the compression rigidity of the elastic body through the lever by utilizing the lever principle, the overall vertical rigidity of the support is, thereby realizing the vertical vibration isolation function.
Description
Technical Field
The invention relates to the technical field of bridge structures or buildings, in particular to a vertical vibration isolation spherical steel support with a lever assembly.
Background
With the rapid development of rail transit, a series of environmental problems such as noise, vibration and the like generated by trains are solved. The bridge vibration isolation support is a novel bridge vibration reduction and isolation product, is mainly used for areas and urban viaducts in which vibration and noise of the surrounding environment are strictly required and limited along the bridge, and mainly plays roles in vibration reduction, vibration isolation and noise reduction. The existing bridge vibration isolation support products are mainly rubber vibration isolation, but have certain defects in the aspects of vertical bearing capacity, quality stability, vibration isolation performance and service life.
Disclosure of Invention
In order to solve the technical problems, the invention provides a vertical vibration isolation spherical steel support with a lever assembly, which is characterized in that the vertical rigidity of the support is decomposed into the compression rigidity of an elastic body through a lever by utilizing the lever principle on the basis of the spherical steel support and through the lever and the elastic body, the overall vertical rigidity of the support is properly reduced, and the vertical fundamental frequency is far away from the dominant frequency of the vibration of the upper structure of the support, so that the vertical vibration isolation function is realized.
In order to realize the technical purpose, the adopted technical scheme is as follows: a vertical vibration isolation spherical steel support with lever components is disclosed, wherein a lower base plate and a base plate of the spherical steel support are arranged up and down, two sides of the base plate are respectively provided with a stop block, the side surfaces of the two stop blocks are respectively contacted with two sides of the lower base plate, the upper surface of a bottom plate of the base plate is provided with two lever fulcrum curved surfaces which are symmetrical about the central line of an axis of the spherical steel support, the center of the bottom surface of the lower base plate is provided with two embedded curved surfaces which are symmetrical about the central line of the axis of the spherical steel support, the bottom surface of the lower base plate outside the embedded curved surfaces is inclined upwards, two groups of lever components are arranged in a space enclosed by the lower base plate and the base plate, the two groups of lever components are symmetrically arranged at two sides of the central line of the axis of the spherical steel support, each group of lever component comprises a rotating block, a lever and an, the curved surface fulcrum is matched with the lever fulcrum curved surface and is correspondingly arranged in the lever fulcrum curved surface, one side of the curved surface fulcrum is a lever short force arm, the other side of the curved surface fulcrum is a lever long force arm, a rotating block is arranged above the lever short force arm, the bottom surface of the rotating block is a plane and is attached to the upper surface of the lever short force arm, the upper surface of the rotating block is matched with the embedded curved surface and is correspondingly arranged in the embedded curved surface, and an elastic body is placed on the lever long force arm to enable the upper surface of the elastic body to be in contact with the bottom surface of the stop block.
The curved surface fulcrum is provided with an antifriction layer.
The invention has the beneficial effects that:
1) According to the vertical vibration isolation spherical steel support with the lever assembly, the structures such as the lever, the rotating block, the elastic body and the base plate are added on the basis of a normal spherical steel support. The bearing superstructure load is through last bedplate, well bedplate, lower bedplate, two turning blocks then apply respectively on two levers, under leverage, the load is through energetically inputing, in the elastomer is exported to the long arm of force department of lever miniwatt, the elastomer takes place compression deformation, arouse lever rotation and short arm of force department be the turning block and go up the vertical deformation of structure, effectively reduce the whole vertical rigidity of support, the dominant frequency of bearing superstructure vibration is kept away from to the vertical fundamental frequency that makes the support, thereby realize vertical vibration isolation function.
2) The anti-friction layer is arranged on the curved surface fulcrum of the lever, so that the anti-friction lever is small in friction coefficient, low in abrasion and low in pressure stress, and the fatigue performance of vibration isolation is well guaranteed.
3) The invention adds the rotating block mainly for adapting to the deformation coordination capability of the lever, if the lever is in hard contact, the lever is difficult to act to cause the phenomenon of blocking, and the vibration isolation function of the support cannot be exerted.
4) the two sides in the upper part of the base plate of the invention basically and completely wrap the two sides of the lower base plate, so that the support is ensured not to incline in the stress process, the load can be better and uniformly distributed on the two rotating blocks and the lever, and the stress uniformity of the structure is ensured.
5) If the elastic body is damaged, a load smaller than the upper structure of the support can be directly applied to the bridge to act on the lever, and the whole support does not need to be replaced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
In the figure: 1. the device comprises an upper seat plate, 2 parts of an upper plane friction pair, 3 parts of a middle seat plate, 4 parts of a spherical friction pair, 5 parts of a lower seat plate, 5-1 parts of an embedded curved surface, 6 parts of a rotating block, 7 parts of a lever, 7-1 parts of a curved surface fulcrum, 7-2 parts of a lever short force arm, 7-3 parts of a lever long force arm, 8 parts of a base plate, 8-1 parts of a stop dog, 8-2 parts of a lever fulcrum curved surface, 9 parts of an elastic body.
Detailed Description
The spherical steel support can be functionally divided into a common spherical support and a hyperboloid spherical seismic isolation and reduction support (or a friction pendulum spherical seismic isolation and reduction support). The support is divided into a unidirectional movable type, a multidirectional movable type and a fixed type from the structural form. The lever assembly can be added to the pot rubber support, the spherical support, the hyperboloid spherical vibration reduction and isolation support (or the friction pendulum spherical vibration reduction and isolation support) and other supports, and the structure of the lower seat plate and the base plate is changed to realize the vertical vibration isolation function.
A vertical vibration isolation spherical steel support with lever components, wherein a lower seat plate 5 and a base plate 8 of the spherical steel support are arranged up and down, two sides of the base plate 8 are respectively provided with a stop dog 8-1, the side surfaces of the two stop dogs 8-1 are respectively contacted with two sides of the lower seat plate 5, the upper surface of a bottom plate of the base plate 8 is provided with two lever fulcrum curved surfaces 8-2 which are symmetrical about the central line of a spherical steel support shaft, the center of the bottom surface of the lower seat plate 5 is provided with two embedded curved surfaces 5-1 which are symmetrical about the central line of the spherical steel support shaft, the embedded curved surfaces 5-1 are closer to the central line of the spherical steel support shaft than the lever fulcrum curved surfaces 8-2, the bottom surface of the lower seat plate 5 outside the embedded curved surfaces 5-1 is inclined upwards to provide a space for the rotation of the lever components and simultaneously reduce the whole volume and weight of the lower seat plate 5, and two groups of lever components are arranged, two groups of lever components are symmetrically arranged at two sides of the central line of the spherical steel support shaft, when the support is pressed down to apply force integrally, the two groups of lever components rotate synchronously at the same angle to bear load, each group of lever components comprises a rotating block 6, a lever 7 and an elastic body 9, the left side, the right side, the upper side and the lower side of the lever 7 are respectively provided with a gap for the rotation of the lever 7, namely, a gap is arranged between the bottom surface of the lever 7 and the upper surface of the base plate 8, a gap is arranged between the two opposite levers 7, a gap is arranged between the side surface of the lever 7 and the inner side wall of the base plate 8, a gap is arranged between the upper surface of the lever 7 and the bottom surface of the lower base plate 5, a curved surface fulcrum 7-1 is arranged on the bottom surface of the lever 7, the curved surface fulcrum 7-1 is a downward convex curved surface structure, the curved, the lever is close to the center of the support, namely the position of a short force arm force application point, the lever is far away from the center of the support, namely the position of a long force arm force application point, one side of a curved surface fulcrum 7-1 is a lever short force arm 7-2, the other side of the curved surface fulcrum 7-1 is a lever long force arm 7-3, a rotating block 6 is arranged above the lever short force arm 7-2, the bottom surface of the rotating block 6 is a plane and is attached to the upper surface of the lever short force arm 7-2, the upper surface of the rotating block 6 is matched with an embedded curved surface 5-1 and is correspondingly arranged in the embedded curved surface 5-1, and an elastic body 9 is placed on the lever long force arm 7-3, so that the upper surface of the elastic body 9.
The surface of the curved surface fulcrum 7-1 is provided with an antifriction layer, so that the friction coefficient between the curved surface fulcrum and the curved surface 7-1 and the lever fulcrum curved surface 8-2 is smaller, the abrasion is low, the pressure stress is not high, and the fatigue performance of vibration isolation is better ensured.
A vertical vibration isolation spherical steel support with a bidirectional movable lever structure is provided, as shown in figure 1. The device mainly comprises an upper seat plate 1, a middle seat plate 3, a lower seat plate 5, a rotating block 6, a lever 7, a seat plate 8, an elastic body 9 and the like. The upper center of the lower seat plate 5 is a spherical surface provided with a spherical non-metallic sliding plate, the bottom of the lower seat plate is provided with two embedded curved surfaces 5-1 which are centrosymmetric, and two sides of the embedded curved surfaces 5-1 are side planes. The turning block 6 is a curved surface body, the upper surface is a curved surface, and the lower surface is a plane; one holder contains two turning blocks 6. The fulcrum of the lever 7 is a curved surface, the lever 7 is close to the central position of the support, namely the position of the force application point of the short force arm, and the lever is far away from the central position of the support, namely the position of the force application point of the long force arm, and the elastomer 9 is placed; the lever 7 is located below the turning block 6. Two lever fulcrum curved surfaces 8-2 are symmetrically arranged at the central position of the base plate 8, and two sides of the base plate 8 are also provided with a stop block 8-1 for supporting the elastic body 9; the side faces of the stopper 8-1 of the base plate 8 are in contact with both sides of the lower seat plate 5 with a certain gap therebetween while substantially enclosing the lower seat plate 5. The lower part of the upper seat plate 1 and the upper part of the middle seat plate 3 are provided with an upper plane friction pair 2; the lower part of the middle seat plate 3 and the upper part of the lower seat plate 5 are provided with spherical friction pairs 4.
the vertical vibration isolation spherical steel support of the bidirectional movable lever structure provided by the embodiment is additionally provided with two groups of symmetrical lever assemblies on the basis of a normal spherical steel support, and the structure of the lower base plate 5 and the base plate 8 is changed. Support superstructure load passes through upper seat board 1, well bedplate 3, bedplate 5 down, two turning blocks 6 then apply two levers 7 respectively, under the lever 7 effect, the load is through energetically inputing, in the long arm of force department low-force output elastomer 9 of lever 7, elastomer 9 takes place compression deformation, arouse lever 7 to rotate and short arm of force department be turning block 6 and the vertical deformation of above structure promptly, effectively reduce the whole vertical rigidity of support, the basic frequency that makes the vertical fundamental frequency of support keep away from the vibration of support superstructure, thereby realize vertical vibration isolation function. An anti-friction layer is arranged at the fulcrum of the lever 7, so that the friction coefficient is small, the abrasion is low, the pressure stress is not high, and the fatigue performance of vibration isolation is better ensured. The rotating block 6 is added to the support, mainly in order to adapt to the deformation coordination capability of the lever 7, if the lever 7 is in hard contact, the lever 7 is difficult to play a role, so that the phenomenon of blocking is caused, and the vibration isolation function of the support cannot be realized. Both sides totally encase the both sides of bedplate 5 down basically in 8 upper portions of bed plate, guarantee that the support can not take place the slope in the atress process, can be better divide the load equally to two turning blocks 6 and lever 7 on, guarantee the homogeneity of structure atress. When the support normally operates, the plane friction pair 2 on the support realizes the displacement function of the structure; the spherical friction pair 4 realizes the vertical rotation function of the structure. After the support is used for a certain period, if the elastic body 9 is damaged, a load smaller than the upper structure of the support can be directly applied to the bridge to act on the lever 7, and the whole support does not need to be replaced by replacing the elastic body 9.
Claims (2)
1. The utility model provides a vertical vibration isolation ball-type steel support with lever subassembly, setting about the bedplate (5) and bedplate (8) of ball-type steel support present, its characterized in that: two sides of the base plate (8) are respectively provided with a stop block (8-1), the side surfaces of the two stop blocks (8-1) are respectively contacted with two sides of the lower base plate (5), the upper surface of the bottom plate of the base plate (8) is provided with two lever fulcrum curved surfaces (8-2) which are symmetrical about the central line of the spherical steel support axis, the center of the bottom surface of the lower base plate (5) is provided with two embedded curved surfaces (5-1) which are symmetrical about the central line of the spherical steel support axis, the bottom surface of the lower base plate (5) at the outer side of the embedded curved surfaces (5-1) is upwards inclined, two groups of lever components are arranged in a space enclosed by the lower base plate (5) and the base plate (8), the two groups of lever components are symmetrically arranged at two sides of the central line of the spherical steel support axis, each group of lever components comprises a rotating block (6), a lever (7) and an elastic body (9), the left side, the right, a curved surface fulcrum (7-1) is arranged on the bottom surface of the lever (7), the curved surface fulcrum (7-1) is matched with the lever fulcrum curved surface (8-2) and is correspondingly arranged in the lever fulcrum curved surface (8-2), one side of the curved surface fulcrum (7-1) is a lever short force arm (7-2), the other side of the curved surface fulcrum (7-1) is a lever long force arm (7-3), a rotating block (6) is arranged above the short lever arm (7-2), the bottom surface of the rotating block (6) is a plane and is attached to the upper surface of the short lever arm (7-2), the upper surface of the rotating block (6) is matched with the embedded curved surface (5-1) and is correspondingly arranged in the embedded curved surface (5-1), an elastic body (9) is arranged on the long force arm (7-3) of the lever, so that the upper surface of the elastic body (9) is contacted with the bottom surface of the stop block (8-1).
2. The vertical vibration isolation ball-type steel mount with lever assembly of claim 1, wherein: and an anti-friction layer is arranged on the surface of the curved surface fulcrum (7-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810803917.3A CN108774949B (en) | 2018-07-20 | 2018-07-20 | Vertical vibration isolation spherical steel support with lever assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810803917.3A CN108774949B (en) | 2018-07-20 | 2018-07-20 | Vertical vibration isolation spherical steel support with lever assembly |
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| Publication Number | Publication Date |
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| CN108774949A CN108774949A (en) | 2018-11-09 |
| CN108774949B true CN108774949B (en) | 2019-12-06 |
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| CN201810803917.3A Active CN108774949B (en) | 2018-07-20 | 2018-07-20 | Vertical vibration isolation spherical steel support with lever assembly |
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| CN110777641A (en) * | 2019-11-07 | 2020-02-11 | 湘潭大学 | Multistage energy consumption bridge antidetonation dog convenient to maintain and change |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5929727B2 (en) * | 1980-03-14 | 1984-07-23 | 元之助 新井 | road joint |
| CN105908622B (en) * | 2016-05-26 | 2018-03-09 | 中铁大桥勘测设计院集团有限公司 | A kind of anti-pulling spherical bearing |
| CN205711721U (en) * | 2016-06-23 | 2016-11-23 | 内蒙古建筑职业技术学院 | A kind of novel adjustable bridge bearing pad |
| CN208748509U (en) * | 2018-07-20 | 2019-04-16 | 洛阳双瑞特种装备有限公司 | A kind of vertical vibration isolation ball shaped steel bearing with lever assembly |
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Address after: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee after: CSSC Shuangrui (Luoyang) special equipment Co.,Ltd. Address before: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee before: LUOYANG SUNRUI SPECIAL EQUIPMENT Co.,Ltd. |
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