Marine windproof bridge support

Abstract

A marine windproof bridge bearing, comprising a bearing body and a windproof mechanism; the bearing body comprises an upper seat plate, a middle seat plate, a lower seat plate, a plane friction pair and a spherical friction pair, the windproof mechanism comprises a one-way variable telescopic cover, a transverse protection plate, a limit plate and a connecting plate, two one-way variable telescopic covers are respectively arranged on the lower seat plates on both sides of the longitudinal bridge direction of the upper seat plate, the limit plate is arranged between the upper seat plate and the connecting plate fixed on the upper seat plate, a gap for the longitudinal expansion and contraction of the one-way variable telescopic cover and a gap for the vertical and lateral rotation of the bearing body are arranged between the limit plate and the connecting plate, the upper ends of the two transverse protection plates are respectively fixedly connected to the transverse bridge side surfaces of the upper seat plate, the lower end of the transverse protection plate is a free end, the free end is arranged corresponding to the side of the lower seat plate, and a transverse movement gap is arranged between the free end and the side of the lower seat plate. The bearing has high rigidity, can resist the force of typhoons, and has good windproof ability.

Description

Technical Field

[0001] The invention relates to the technical field of bridge supports, in particular to an ocean windproof bridge support. Background Art

[0002] Spherical bearings have the characteristics of high bearing capacity, simple structure, flexible rotation and excellent durability. They are widely used in railway, highway, urban and intercity rail transit bridges. Spherical bearings mainly use two friction pairs - plane friction pair and spherical friction pair to complete the bearing, displacement and rotation functions. Both the plane friction pair and the spherical friction pair are composed of stainless steel slide plates and non-metallic slide plates. They are the core components of the spherical bearing and the key to the service life of the bearing. Therefore, their dustproof sealing is very important. Once dust and impurities enter the friction surface, it will seriously affect the functionality and durability of the bearing. Especially in steel truss structures, in order to solve the problem of the bearing force point offset of the steel truss after the horizontal rotation or horizontal displacement of the spherical bearing, a convex spherical inverted spherical bearing is used. After the bearing has a large horizontal slip, the plane friction pair is directly exposed to the outside, which puts higher requirements on the protection of the bearing. When bridge bearings are used in coastal typhoon-prone areas, if effective wind and wind resistance measures are not taken, the protective fence of the bearing plane friction surface is more likely to be damaged by strong winds.

[0003] At present, the external dustproof sealing device of the spherical bearing in China mainly adopts a structure in which polyurethane panels and rubber panels surround the entire circle of the bearing seat plate and are fixed with pressure strips, or a structure in which a steel structure is used as the skeleton and organic glass panels are installed around and on the upper surface to achieve the dustproof effect. However, there are the following shortcomings in actual use: the polyurethane panels, rubber panels or organic glass panels used will be affected by environmental factors such as ozone and ultraviolet rays and age. In a high humidity environment, they are prone to hydrolysis or performance degradation after absorbing water, resulting in damage and cracking, resulting in reduced sealing effect and affecting the protection life. Both structural dustproof devices are not suitable for strong wind environments, especially when used in coastal areas prone to typhoons. Due to insufficient fixing force and their own material characteristics, polyurethane panels, rubber panels and organic glass panels are easily blown and torn, resulting in the bearing friction surface being exposed and unable to play a long-term protective role. The existing protective device needs to reserve displacement space. Under the condition of large displacement of the bearing, the dustproof sealing device structure is large and the bridge structure cannot meet the installation requirements. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a marine windproof bridge bearing, which solves the shortcomings of the above-mentioned existing bridge bearing protection measures and has windproof capabilities.

[0005] In order to achieve the above technical purpose, the adopted technical solution is: a marine windproof bridge bearing, including a bearing body and a windproof mechanism;

[0006] The support body comprises an upper seat plate, a middle seat plate, a lower seat plate, a plane friction pair and a spherical friction pair. The length of the lower seat plate in the longitudinal bridge direction is longer than the length in the transverse bridge direction. The middle seat plate is arranged on the lower seat plate. The upper surface of the lower seat plate is a plane, the lower surface of the middle seat plate is a plane, a plane friction pair is arranged between the upper surface of the lower seat plate and the lower surface of the middle seat plate, an upper seat plate is arranged above the middle seat plate, the four side surfaces of the upper seat plate are planes, the upper surface of the middle seat plate is a convex spherical surface, the lower surface of the upper seat plate is a concave spherical surface matched with the convex spherical surface, and a spherical friction pair is arranged between the upper surface of the middle seat plate and the lower surface of the upper seat plate;

[0007] The windproof mechanism includes a one-way variable-length telescopic cover, a transverse protective plate, a limit plate and a connecting plate. The two one-way variable-length telescopic covers are respectively arranged on the lower seat plates on both sides of the longitudinal bridge direction of the upper seat plate. One end of the one-way variable-length telescopic cover is fixed on the lower seat plate, and the other end is connected to the limit plate. The limit plate is arranged between the upper seat plate and the connecting plate fixed on the upper seat plate. A gap for the longitudinal extension of the one-way variable-length telescopic cover and a gap for the vertical and lateral rotation of the support body are provided between the limit plate and the connecting plate. The upper ends of the two transverse protective plates are respectively fixedly connected to the two side surfaces of the upper seat plate in the transverse bridge direction. The lower end of the transverse protective plate is a free end. The free end is arranged corresponding to the side surface of the lower seat plate, and a transverse movement gap is provided between the free end and the side surface of the lower seat plate.

[0008] Sealing plates are arranged on both sides of the longitudinal bridge of the transverse protection plate, and the sealing plates are arranged on the inner side of the limiting plate.

[0009] The cross section of the connecting plate is an inverted Z-shape, one end of the connecting plate is connected to the upper seat plate, and the other end is arranged on the outer side of the limiting plate.

[0010] A wind inlet prevention plate is connected below the tail of the one-way variable-length telescopic cover, and the wind inlet prevention plate is used to seal the lower space between the outer side of the lower seat plate and the tail of the one-way variable-length telescopic cover.

[0011] The invention has the following beneficial effects: the windproof structural plate of the marine windproof bridge support peripheral device proposed by the invention is made of stainless steel, which has excellent corrosion resistance and aging resistance, avoids direct exposure of polyurethane panels or rubber panels to the sun, reduces the material aging failure caused by ultraviolet rays, ozone, etc., and has better durability. The device has high rigidity, can resist the force of typhoons, and has good windproof ability.

[0012] The one-way variable-length telescopic cover can adapt to large longitudinal sliding displacements of the bearing. There is a gap between the one-way variable-length telescopic cover and the connecting plate in the vertical and lateral directions to adapt to the need for lateral sliding during normal operation of the bearing and changes in the height of the bearing after the spherical surface rotates. Therefore, the marine windproof bridge bearing proposed by the present invention has the advantages of simple structure, convenient installation, excellent corrosion resistance, good sealing, high rigidity, excellent windproof performance, and long service life. The windproof structure has no interference effect on the longitudinal and lateral sliding and vertical rotation of the bridge bearing under normal use conditions. Compared with the existing spherical bearing, it has achieved an upgrade in the dustproof sealing device, and the windproof and dustproof sealing effects are significant.

[0013] Sealing plates are welded on both sides of the lateral protective plate of the support, leaving no gaps, thus improving the overall rigidity and dustproof sealing performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0016] Figure 3 It is a schematic diagram of the positional relationship between the limiting plate and the connecting plate of the present invention;

[0017] Figure 4 It is a schematic diagram of the top view structure of the present invention;

[0018] In the figure: 1: one-way variable length telescopic cover; 2: connecting plate; 3: sealing plate; 4: transverse protective plate; 5: connecting bolts; 6: upper seat plate; 7: lower seat plate; 8: spherical friction pair; 9: middle seat plate; 10: plane friction pair; 11, limit plate, 12, wind inlet prevention plate. DETAILED DESCRIPTION

[0019] The present invention is described in conjunction with the accompanying drawings and a specific embodiment of a multi-directional movable marine windproof bridge bearing. However, the present invention is not limited to this embodiment, and can also be applied to longitudinal movable bridge bearings, transverse movable bridge bearings, fixed bridge bearings and other types of bearings.

[0020] As shown in the figure, a marine windproof bridge bearing includes a bearing body and a windproof mechanism; the bearing body includes an upper seat plate 6, a middle seat plate 9, a lower seat plate 7, a plane friction pair 10 and a spherical friction pair 8. The length of the lower seat plate 7 in the longitudinal bridge direction is longer than the length in the transverse bridge direction, which is convenient for the installation of the windproof mechanism. A middle seat plate 9 is provided on the lower seat plate 7. The upper surface of the lower seat plate 7 is a plane, and the lower surface of the middle seat plate 9 is a plane. A plane friction pair 10 is provided between the upper surface of the lower seat plate 7 and the lower surface of the middle seat plate 9. The plane friction pair 10 can realize the movement of the bearing body in the longitudinal bridge direction and the transverse bridge direction. An upper seat plate 6 is provided above the middle seat plate 9. The upper surface of the middle seat plate 9 is a convex spherical surface, and the lower surface of the upper seat plate 6 is a concave spherical surface matched with the convex spherical surface. A spherical friction pair 8 is provided between the upper surface of the middle seat plate 9 and the lower surface of the upper seat plate 6. The spherical friction pair 8 realizes the vertical rotation and lateral rotation between the middle seat plate 9 and the upper seat plate 6.

[0021] The windproof mechanism includes a one-way variable-length telescopic cover 1, a transverse protective plate 4, a limit plate 11 and a connecting plate 2. The two one-way variable-length telescopic covers 1 are respectively arranged on the lower seat plates 7 on both sides of the longitudinal bridge of the upper seat plate 6. One end of the one-way variable-length telescopic cover 1 is fixed on the lower seat plate 7, and the other end is connected to the limit plate 11. The limit plate 11 is arranged between the upper seat plate 6 and the connecting plate 2 fixed on the upper seat plate 6. A gap for the longitudinal extension of the one-way variable-length telescopic cover 1 and a gap for the vertical and lateral rotation of the support body are provided between the limit plate 11 and the connecting plate 2. The upper ends of the two transverse protective plates 4 are respectively fixedly connected to the two side surfaces of the transverse bridge of the upper seat plate 6, and the fixed connection method can be bolted. The lower end of the transverse protective plate 4 is a free end. The optimal setting form is that the bottom of the free end is close to the side surface of the lower seat plate 7 and slightly higher than the bottom surface of the lower bottom plate, with a gap that can be moved laterally. One end of the transverse protective plate 4 is fixedly connected and the other end is suspended. When the plane friction pair 10 slides longitudinally, it pushes or pulls the limit plate 11 to move, and the one-way variable length telescopic cover 1 composed of multiple sections of protective covers undergoes relative displacement of compression and extension, so that the longitudinal length of the protective cover changes, and the change amount is equal to the longitudinal slip of the bearing. When the bearing slides transversely, the upper seat plate 6 drives the connecting plate 2 and the transverse protective plate 4 to slide; there is a gap between the one-way variable length telescopic cover 1 and the connecting plate 2 in the vertical and lateral directions to adapt to the needs of the bearing height change after the lateral slip occurs during the normal operation of the bearing and the rotation of the spherical surface. The windproof structure has no interference effect on the longitudinal and transverse slip and vertical rotation of the bridge bearing under normal use conditions.

[0022] The one-way variable-length telescopic cover 1 is formed by overlapping multiple sections of steel plate covers. The overlapping length must meet the stiffness requirements, and the difference between its maximum elongation length and minimum compression length is greater than the bidirectional displacement of the support in the longitudinal bridge direction.

[0023] Sealing plates 3 are provided on both sides of the longitudinal bridge of the transverse protection plate 4, and the sealing plates 3 are arranged on the inner side of the limit plate 11. The sealing plates 3 can be connected to the transverse protection plate 4 by welding or assembly. When the transverse protection plate 4 moves, the sealing plates 3 move without affecting the movement of the transverse protection plate 4 and the one-way variable length telescopic cover 1. The width of the sealing plate 3 is greater than or equal to the sum of the width between the transverse protection plate and the one-way variable length telescopic cover 1 and the transverse displacement in the absence of displacement. There is a gap between the lower end of the sealing plate 3 and the upper surface of the lower seat plate, which is convenient for vertical rotation. The one-way variable length telescopic cover and the transverse protection plate 4 have a sealing effect when they are docked.

[0024] like Figure 3 As shown, the cross section of the connecting plate 2 is an inverted Z-shape, one end of the connecting plate 2 is connected to the upper seat plate 6, and the other end is arranged on the outside of the limiting plate 11. The connecting plate 2 is formed by vertical plate 1, horizontal plate 2 and vertical plate 2 connected vertically in sequence, the vertical plate 1 is fixed on the side surface of the upper seat plate in the horizontal direction, the vertical plate 2 is arranged on the outside of the limiting plate 11, there is a horizontal gap between the two, and a vertical gap is provided between the upper end of the limiting plate 11 and the horizontal plate 2.

[0025] When the length of the one-way variable-length telescopic cover 1 is longer than the length of one side of the lower seat plate, an anti-wind inlet plate 12 is connected below the tail of the one-way variable-length telescopic cover 1, and the anti-wind inlet plate 12 is used to seal the lower space between the outer side of the lower seat plate 7 and the tail of the one-way variable-length telescopic cover 1.

[0026] The top surface of the one-way variable-length telescopic cover 1 is a V-shaped slope, which is inclined from the middle to the lateral sides, and is used to guide the wind direction, thereby achieving a better windproof effect.

[0027] The plates and bolts of the windproof structure are made of stainless steel, and grades such as 0Cr18Ni9, 1Cr18Ni9Ti, and 316L can be selected. Stainless steel plates have excellent corrosion resistance and aging resistance, which prevents polyurethane panels or rubber panels from being directly exposed to the sun, reduces material aging and failure caused by ultraviolet rays, ozone, etc., and has better durability. In addition, the device composed of steel plates has high rigidity, can withstand frequent typhoons, and has good windproof capabilities. Side baffles are welded on both sides of the horizontal protective plate of the windproof structure, and there are no gaps, which improves the overall rigidity and dustproof sealing performance of the device. Improves the overall rigidity and dustproof sealing performance of the device. The marine windproof spherical bearing has the advantages of simple structure, convenient installation, excellent corrosion resistance, good sealing, high rigidity, excellent windproof performance, and long service life.

Claims

1. A marine windproof bridge support, characterized in that: It includes a support body and a windproof mechanism; The support body comprises an upper seat plate (6), a middle seat plate (9), a lower seat plate (7), a plane friction pair (10) and a spherical friction pair (8); the length of the lower seat plate (7) in the longitudinal bridge direction is longer than the length in the transverse bridge direction; a middle seat plate (9) is provided on the lower seat plate (7); the upper surface of the lower seat plate (7) is a plane; the lower surface of the middle seat plate (9) is a plane; a plane friction pair (10) is provided between the upper surface of the lower seat plate (7) and the lower surface of the middle seat plate (9); an upper seat plate (6) is provided above the middle seat plate (9); the four side surfaces of the upper seat plate (6) are planes; the upper surface of the middle seat plate (9) is a convex spherical surface; the lower surface of the upper seat plate (6) is a concave spherical surface matched with the convex spherical surface; and a spherical friction pair (8) is provided between the upper surface of the middle seat plate (9) and the lower surface of the upper seat plate (6); The windproof mechanism comprises a one-way variable-length telescopic cover (1), a transverse protection plate (4), a limit plate (11) and a connecting plate (2). The two one-way variable-length telescopic covers (1) are respectively arranged on the lower seat plates (7) on both sides of the longitudinal bridge direction of the upper seat plate (6). One end of the one-way variable-length telescopic cover (1) is fixed to the lower seat plate (7), and the other end is connected to the limit plate (11). The limit plate (11) is arranged between the upper seat plate (6) and the connecting plate (2) fixed to the upper seat plate (6). A gap for longitudinal extension of the one-way variable-length telescopic cover (1) and a gap for vertical and lateral rotation of the support body are provided between the limit plate (11) and the connecting plate (2). The upper ends of the two transverse protection plates (4) are respectively fixedly connected to the two side surfaces of the transverse bridge direction of the upper seat plate (6). The lower ends of the transverse protection plates (4) are free ends. The free ends are arranged corresponding to the side surfaces of the lower seat plate (7), and a transverse movement gap is provided between the free ends and the side surfaces of the lower seat plate (7).

2. The marine windproof bridge support according to claim 1, characterized in that: Sealing plates (3) are provided on both sides of the longitudinal bridge of the transverse protection plate (4), and the sealing plates (3) are arranged on the inner side of the limiting plate (11).

3. The marine windproof bridge support according to claim 1, characterized in that: The cross section of the connecting plate (2) is an inverted Z-shape; one end of the connecting plate (2) is connected to the upper seat plate (6), and the other end is arranged on the outer side of the limiting plate (11).

4. The marine windproof bridge support according to claim 1, characterized in that: A wind inlet prevention plate (12) is connected below the tail of the one-way variable-length telescopic cover (1), and the wind inlet prevention plate (12) is used to seal the space below between the outer side of the lower seat plate (7) and the tail of the one-way variable-length telescopic cover (1).

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